classifier and clarifier

difference between clarifier and thickener

difference between clarifier and thickener

TheDifference Between a Clarifier and a Thickener issubtle as they will visually look the same. Fundamentally, thickeners and clarifiers are both used to settle solids which results in the separation of liquids and solids. Thickeners are used to concentrate solids, while clarifiers are used to purify liquids.

Clarifiers, depending on the application that can be used to recover immediately reusable process water, as well as extracting fines and other materials. Thickeners can be used by mineral and aggregate producers, as well as by environmental contractors in industries such as wastewater management.

The benefits of Thickeners can vary from user to user depending on the producers needs and the industry. For instance, Thickeners can be used in locations where water is in short supply or very expensive, providing immediately reusable process water back to the plant. They can also be used to reduce the size or possibly eliminate settling ponds. In some industries, they are used as Clarifiers to remove minerals and fines from water.

New simplicity new efficiency for long, trouble-free service in counter-current washing and thickening, water and waste treatment, clarification. Heart of the Spiral Rake Thickener is this improved, totally- enclosed, simple and rugged gear reducer in sizes for thickeners to 150 diameter. Newly designed, high strength main gear is carried on Formica bearings that mean no wear, no maintenance. Gear runs in oil gives maximum lateral and vertical stability provides highest torque rating throughout size range. Heavy worm shaft prevents deflection, assures maximum worm-gear contact and long life.

Rake lifting device consists of lifting stand with non-freezing lifting nut, ball thrust bearing, an acme threaded lifting stem and handwheel. Simple, effective overload indicator provided. Spiral rakes move settled material to center discharge in only one revolution. Acidproof construction available. Thickeners and tanks, steel, stainless steel, wood or rubber-coveredsteel, in sizes to 150.

These tests are made at no cost to you. They can assist you by eliminating risk of specifying a thickener that is too small to do the job or too large and costly for your needs. Specializes in thickening problems.

With the Hydro Classifier, fine sizing and desliming of pulps with particles of different settling rates are accomplished with the simplest operating methods to reduce operators time, maintenance and mechanical wear. Sizes from 6 diameter to 55 diameter.

ekcp

ekcp

EIMCO-K.C.P. Slacker-Classifiers are used in preparation of Milk of Lime and Causticizers preparing for producing white liquor clarifier are available in different sizes depending on the application and requirements. Slaker-Classifier combines the slaking action, classifying and grit removal in a single unit. The design provides adequate retention time for optimum slaking efficiency. EIMCO-K.C.P Slaker Classifiers are available depending on the design of the hot lime facilities. The recommended Slaker Classifier combines the slaking action, classifying and grit removal in a single, rugged unit. An axial flow turbine in a baffled compartment is used for complete agitation. Better pumping action is achieved with a lower horsepower requirement. The classifier section utilizes Rake Classifier, similar to that which has been successfully used in the metallurgical industry for many years. Virtually all of the plus 65 mesh inert solids are removed in this compartment. The grit is sprayed with water at the top of the screw to recover any remaining soda values before discharge. The large diameter screw in the Classifier has a force lubricated lower sleeve, using either water or green liquor as the lubricating fluid. The entire unit is heavy-duty construction with stainless steel used in the slaking compartment liners, the agitator shaft and impeller, overflow, feed piping, and the classifier rake. The design provides for adequate detention time for optimum slaking efficiency.

The EIMCO-K.C.P. equipment product line consists of Liquid Solid Separation products for the Mining, Mineral & Metallurgical Process, Chemical Process, Food Process, Refinery, Pulp and Paper, Power Plant, FGD System, Municipal & Industrial Waste and Water Treatment and with a wide range of related services.

rake classifier

rake classifier

Let me describe a cycle of the Rake Classifier arm to you. The arm, with a series of rakes along its length, drops into the flow of slurry and is pulled upwards. Some of the fine material will flow over, the top of the rake. The rest will be pulled along with the coarser heavier material up the incline. When the arm reaches the end of its throw it will lift the rake out of slurry allowing the material to continue back flowing down towards the fine ore discharge. As the slurry begins to flow downwards, further classification takes place. Before the coarse material is able to travel out of range of the next rake on the arm it will be picked up again and pulled up the incline a bit further. The slurry will continue to be manipulated in this manner until all of the fine material has been washed out of it and the coarse is discharged at the other end of the Rake Classifier by its rakes.

The rake classifier (Figure 9.18(a)) uses rakes actuated by an eccentric motion, which causes them to dip into the settled material and to move it up the incline for a short distance. The rakes are then withdrawn, and return to the starting-point, where the cycle is repeated. The settled material is thus slowly moved up the incline to the discharge. In the duplex type, one set of rakes is moving up. while the other set returns; simplex and quadruplex machines are also made, in which there arc one or four raking assemblies, respectively.

The rake classifier such as the Dorr classifier consists of a rectangular tank with a sloping/inclined bottom. The tank is provided with movable rakes (reciprocating rakes). The feed in the form of a suspension (slurry) is introduced continuously near the middle of the tank. The lower end of the tank has a weir overflow (discharge weir) from which the fines that are not settled leave with the overflow liquid. The heavy material (coarser particles) sink to the bottom of the tank. The rakes scrap the settled solids upward along the bottom of the tank toward the top of the tank for discharge from a sand-discharge chute. The reciprocating rakes keep the slurry in continuous agitation. The time of raking stroke is so adjusted that fines do not have time to settle and so remain near the surface of the slurry, while the heavy particles have time to settle

Of the various classifiers employed in conjunction with ball and rod mills, the only ones at all widely used are those made under the Dorr-Oliver Companys patents. They can be divided intotwo classes, one consisting of the straight type and the other of the bowl type of classifier.

The machine consists of a settling tank in the form of an inclined trough with its upper end open, in which are suspended the rakes (3). The pulp to be classified enters the tank by the feed trough (1) ; the heavy material settles to the bottom, but any particles small enough to be discharged overflow the lip (2) in a continuous stream. The upper end of each rake is suspended by a link from a rocker arm (5) to which is attached a roller (6), the shaft supporting the rocker arm being fixed to the frame work that carries the driving mechanism. The roller (6) presses against the cam (7), which is keyed to the crankshaft (8) and revolves with it. The lower end of each rake is suspended by a link from a bell crank (10), the shaft of which passes through one end of a lifting lever (11), which in turn is carried on a framework fixed to the sides of the tank, but which remains stationary while the bell crank (10) is moving. Should the classifier be stopped and the tank become choked with sand, the rakes can be lifted clear by means of a worm gear (13) which raises the lifting lever (11) and so pulls up the whole assembly supporting the lower end of the rakes. The bell crank (10) is connected to the rocker arm (5) by a reach rod (12) ; each rake is also linked by a connecting rod (4) to a crank (9) which is cast in one piece with the cam (7).

The crankshaft is driven at a slow speed through a reducing gear. As it revolves the cranks (9) move the rakes backwards and forwards parallel to the bottom of the tank, but the cam (7) is so shaped that, when a rake is at the end of its strokes at the lower end of the tank, the rocker arm (5) and the bell crank (10) drop it so that it is just clear of the bottom. The crank (9) then pulls it up the tank by means of the connecting rod (4) to the full extent of its stroke, dragging up any sand that has settled to the bottom. At the end of this upward stroke the rake is raised by the cam through the rocker arm and bell crank so that, on the return stroke of the crank (9), it moves down clear of the sand which has been settling on the bottom of the tank. The downward stroke of the rakes gives the pulp a jigging motion which helps to keep the fine material in suspension, while the flow of the pulp from the ball mill produces a continuous overflow past the lip (2) which carries over any particles that are small enough to be discharged. The oversize sand, on the other hand, is dragged up the classifier by the rakes as fast as it settles and is finally discharged at the open end of the tank at the top of the slope in a comparatively dry condition.

Model D Classifiers are made in Simplex, Duplex, and Quadruplex typesthat is, with one, two, and four rows of rakes respectively. Simplexmachines are made in two sizes, 3 ft. and 4 ft. wide respectively, the corresponding Duplex classifiers being twice and the Quadruplex fourtimes as wide.

When a classifier is working in closed circuit with a ball or rod mill, it is usually possible to arrange their relative positions so that the discharge of the mill flows to the feed trough of the classifier while the oversize that is raked up the slope falls by gravity into the feed box of the mill; such an arrangement is shown in Fig. 9. The length of the classifier does not affect its operation and it can, therefore, be made of the exact length required to suit the mill.

The Model D Classifier has been superseded by Model F, which incorporates a new type of head-motion without a cam and with fewer moving parts. The Model D cam and roller type of head-motion restricts the speed at which the rakes can be run, since the roller bounces on the cam if the latter rotates too fast; the absence of a cam in the Model F mechanism makes a higher speed possible and gives the classifier a greater raking capacity in consequence. Model F Classifiers are being installed in most new installations in preference to Model D.

The operation of the mechanism can be seen from Fig. 19. The upper end of each of the rakes (1) is suspended by a rake hanger shaft(2) from a projection on the connecting rod (3). A crank (not shown in the diagram) connects shafts (4) and (5) and is keyed solid with shaft(5) , which is driven through a reducing gear as in Model D. As the crankshaft (5) rotates it moves the end (4) of the connecting rod (3) round in a circle as indicated by the dotted line ; the other end of the connecting rod is secured by a shaft (6) to the front link (7), the lower end of which pivots about a shaft fixed to a support on the tank. The position of the lower end of the link (7) being fixed, its upper end moves backwards and forwards in the path shown by the dotted line as the connecting rod oscillates. As the point (4) falls from (a) to (b) the point(6) rises from (a) to (b), and as the point (4) rises from (b) to (c) the point (6) falls from (b) to (c). The dimensions of the parts are so arranged that the movements of shafts (4) and (6) combine to give the required motion to shaft (2) carrying the rake, which is thus made to move up parallel with the bottom of the tank as the end of the crank moves from(a) through (b) to (c), but during the other half of its travel from (c) through (d) to (a) the reverse takes place ; both ends of the connecting rod rise as the crank moves from (c) to (d) and fall as it moves from (d)to (a) with the result that the rake is lifted and carried down clearof the sand ready foranother upward strokealong the bottom of thetank. The lower end ofeach rake is moved in asimilar way. It is suspended from a hangershaft which is supportedby the rear link (10) andthe bell crank (11) ; thelatter is pivoted on ashaft (12) held in placeby the lifting lever (13).A support fixed to thesides of the tank carriesthe whole lifting leverassembly, including aworm gear (not shown)which can be used toraise the bottom end ofthe rakes in case ofnecessity exactly as inthe Model D Classifier.The top end of the bellcrank (11) is connectedby a reach rod (14) toan eccentric (8), thecentre part of which is cast in one piece withthe crank.

The principle of themechanism is the sameas at the top end ; asthe rake is pulled up thetank, the rise of the bellcrank (11) compensatesfor the fall of the hangershaft (9), and vice versa,but, as it moves down,both bell crank andhanger shaft rise duringthe first half of the downward stroke and fallduring the second half,thus exactly duplicating the motion of the assembly supporting the topend of the rake.

Model F Classifiers are made in Simplex, Duplex, and Quadruplex types, their respective widths being the same as those of Model D. Table 14 can be taken as a basis of the overflow and raking capacity of Model F machines at different settings, although, on account of its smooth operation, the mechanism can be run at considerably higher speeds than those in the table, with corresponding increase in sand-raking capacity. The h.p. consumption is less than that of Model D owing to the reduction in the number of moving parts and the smooth positive operation of the mechanism.

The first two adjustments are fixed before the classifier is installed and they cannot be altered while the machine is running ; the controlling factors are so well known that it is seldom necessary to make a change after the machine has been erected.

The third adjustment is the method by which the operation of a classifier is controlled while the plant is running. The addition of water is always necessary because the ball mill discharge seldom contains less than 70% of solids while a classifier is never run with more than 50% of solids. The effect of the addition of water to a classifier is to determine the rate at which the solids will settle ; in a thick pulp they will settlemore slowly than a thin one. It follows that the coarser the overflow product required, the thicker should be the pulp, and vice versa. It must be understood that an increase in the volume of water, provided that the tonnage of solids remains the same, does not tend to carry coarser particles of ore past the overflow lip ; it has exactly the reverse effectit increases the settling rate and makes the overflow finer.

It will be seen from Table 14 that a separation finer than 100 mesh is likely to require a pulp in the classifier with less than 20% of solids. Since most flotation machines cannot be run economically with a pulp as thin as this, some means is needed of thickening it before flotation in installations where fine grinding is practised. A thickener can be used for the purpose, but the long contact period of the ore with water frequently results in over-conditioning of the pulp or undesirable oxidation of the mineral. The bowl classifier is designed to meet the difficulty and it is considered better to use it whenever possible in preference to a straight classifier followed by a thickener.

grit classifier basics: what is a grit classifier? - jms

grit classifier basics: what is a grit classifier? - jms

Grit Classifiers or also known as a grit screw, grit separator or grit classifier are used at wastewater plants at the headworks (front end of the plant) to help separate the grit from organics and water.Grit removal needs to be done at the headworks of plants to help reduce wear to upstream pumps and mechanical equipment. Grit can also cause pipe blockage and reduce the effective volume of the treatment basins. Grit classifiers usually consist of a hopper positioned on top of an inclined screw conveyor. Typically grit classifiers are made of stainless steel housing and have a high strength abrasion resistant fights on the screw because of the abrasive application.

All types of grit classifiers typically receive a grit slurry from an air lift pump or a grit pump(s). Most classifiers receive a grit slurry that is 1-3% solids mixture.The hopper of a traditional grit classifier is designed for the shortest retention time to allow heavier grit to settle, but not the lighter organic material. The organic material is carried out of the hopper with the grit free overflow and is returned to the plants process. As the grit is carried up the incline and passes the water line elevation, by rotating a very slow RPM screw conveyor, it allows time for the water to drain back into the hopper. The screw conveyor conveys the grit out of the system and usually into a dumpster to then be hauled to a landfill.

Grit classifiers can range from 12 to 24 in diameter (12 is the most popular size). Grit classifiers are sized by hydraulic flow of gallons per minute (GPM) and solid conveyance for the screw conveyor. Influent flow drives the size of the hopper and whether a hydrocyclone should be considered.

When receiving flows less than approximately 250 GPM a hydro-cyclone is not necessary, but when flow exceeds 300 GPM or so the use of hydrocyclones is often considered. Hydrocyclones separate the water from the grit, sending over 90% of the flow back into the plants process grit free. The grit slurry, less than 10% of the flow, goes to the grit classifier hopper. Adding a hydrocyclone to a system allows the hopper of the grit classifier to be smaller for a system that will have a higher influent flow to achieve the same retention time and efficiency.

rectangular vs. circular clarifiers | brentwood industries

rectangular vs. circular clarifiers | brentwood industries

Both rectangular and circular configurations have been commonly used in clarifier basins. The relative merits of the two have been discussed at length for decades. Historically, the selection of rectangular versus circular clarifiers has been based on past experience and the preference of the design engineer or design company. Initial wastewater treatment plant designs in the United States were reasonably balanced between rectangular and circular when collector or scraper systems were designed from steel. With the introduction of biological treatment, corrosion became more of a concern and circular clarifiers became more popular. Nonmetallic chain and flight sludge collection systems for rectangular clarifiers (like our Polychem system) were introduced more than 20 years ago and have overcome the corrosion problem, leading to a resurgence of rectangular clarifiers, particularly for large wastewater treatment plants. Lets compare the benefits of each configuration.

A widely documented clarifier investigation conducted by Sanitation District of Los Angeles County (LACSD) has shown that shallow rectangular clarifiers (3m deep) with concurrent sludge removal perform effectively at surface overflow rate (SOR) as high as 2000 gpd/ft2. In fact, compared to data obtained from a series of previous circular clarifier studies, the effluent suspended solids (ESS) concentration from the 3m rectangular clarifier is equally effective to circular clarifiers of 5.5m depth,which suggests that the rectangular clarifiers can be built shallower to achieve the same effluent quality and subsequently result in cost savings.

Clarifier Hydraulics The shape of the rectangular clarifiers provides a longer path for the wastewater flow and the suspended solids to travel, and subsequently longer detention time which warrants less short circuiting and more sludge settling compared to the centerfeed/peripheral overflow circular clarifiers. In addition, flow distribution among several clarifiers is usually more even and often requires less head loss for rectangular clarifiers.

Construction Rectangular clarifiers typically require less land than circular clarifiers for a similar surface area (21% less in theory). The reduction becomes even more significant in a multiple-unit design, where common concrete walls are used between rectangular basins. The resulting land availability is a major advantage for treatment plant layout. Construction cost is also reduced as a result of the common concrete walls.

The even flow distribution configuration for rectangular clarifiers requires simpler and less expensive pipe work layout and pumping requirement as compared to circular clarifiers where the pipes require a more complicated layout pattern and perhaps a separate pumping station, as well.

Many clarifiers now need to be covered for odor or volatile organic compound (VOC) control. Covers for rectangular clarifiers (using chain and flight systems) are much easier to design and install as well as being less expensive.

Operation and Maintenance Nonmetallic chain and flight systems having multiple flights (scrapers) installed at fixed spacing (typically 10 ft or 3 m) can accomplish both sludge and scum removal. The flights (scrapers) scrape the bottom of the tank and present consistent sludge flows to the hoppers. When the flights travel to the surface of the rectangular tank along the collector chain, the scum/foam is pulled by the flights to the scum trough. Removal of scum and floating solids is almost always easier with rectangular clarifiers, which are known to provide more effective scum/foam trapping via rotating scum troughs. In contrast, the circular scraper systems have only two rotating collector arms with multiple scrapers on each arm that plow the settled sludge to a hopper at the center of the tank. A single cantilevered skimmer arm rotates at the surface to collect scum and concentrate it in a hinged skimmer, from where it is then dragged up a scum beach and trough.

Nonmetallic chain and flight systems for rectangular clarifiers remove all sludge across the collector at constant speed of approximately 2 ft (600 mm)/min. Circular collectors move sludge at much faster rate at the perimeter of the collector than at the center of the collector. It is generally accepted that scraper speeds greater than 6 ft (1800 mm)/min can cause resuspension of settled solids.

Where large collectors are to be built, scum control and the effectiveness of windblown mechanism might be difficult with circular clarifiers especially when there is no wind or in covered tanks. Historically, the most negative aspect of rectangular clarifiers is the relatively frequent need to replace collector chains. Before the 1970s, the replacement frequency was every 10-20 years. After the implementation of nonmetallic chains, the frequency reduced to once every 1520 years. This timeline is in agreement with the commonality of the rectangular clarifiers.

Lifecycle Cost The lifecycle cost for rectangular and circular configurations are generally in similar range. The rectangular configuration could be lower in capital cost (clarifier equipment, civil cost, and cost of pump station if necessary) and total lifecycle cost. The circular clarifier could be lower in O&M cost, such as mechanism replacement and maintenance costs. For example, a case study for a 32 MGD new clarifier design compared the cost between rectangular versus circular clarifiers in California. The total project capital cost is 12% lower for rectangular configuration, while its yearly maintenance cost is 50% higher. The mechanism replacement is considered every 10 years (conservative estimate) for rectangular and 20 years for circular. The resulting total lifecycle cost (19-year cycle) for rectangular is 7% lower than the circular.

Summary Nonmetallic chain and flight systems are noncorrosive, require no routine lubrication, and have lightweight components for ease of installation and maintenance. The use of expensive cranes is not required for routine maintenance. Low-powered motors (0.5 kW) are used requiring minimum power consumption. Sludge and scum are presented for removal in a consistent flow allowing for efficient pump sizing. These advantages in performance, construction, and cost have garnered increased preference toward rectangular clarifiers, which have been widely applied to both the North American and international markets.

Its interesting how you said that a rectangular clarifier might need a separate pumping station for its pipes. Being precautious and knowing exactly what you are going to need with a project would be important. That way you can be sure that you dont have any problems down the line.

Rectangular clarifiers work well in a totally common wall facility. I have an idea for a nutrient removal process (10:10:5:3) that uses a single set of low head pumps that accomplishes RAS, WAS.,IR and FE. Rectangular clarifiers make this possible while lowering initial capital costs up to 40 percent and oparating costs up to 30 percent.

In a recent blog article, we established the importance of mechanical filtration and reviewed a few common types for cooling tower applications. One of the key considerations for a tower owner when going through the selection process is to determine

Why Your Tower May Need Mechanical Filtration Cooling towers are a type of heat exchanger that use direct contact between air and water to dissipate heat from a process to the outside environment. There are hundreds of processes that cooling

The COVID-19 pandemic has impacted every industry around the world, from retail and hospitality to textiles and industrial manufacturing. The transportation industry was no exception. In March, automakers around the world quickly closed their manufacturing facilities to minimize the spread

question: what is the difference between clarifier and classifier? - ceramics

question: what is the difference between clarifier and classifier? - ceramics

Clarifiers are settling tanks built with mechanical means for continuous removal of solids being deposited by sedimentation. A clarifier is generally used to remove solid particulates or suspended solids from liquid for clarification and (or) thickening.

Compact and relatively economical, upflow clarifiers provide coagulation, flocculation, and sedimentation in a single (usually circular) steel or concrete tank. These clarifiers are termed upflow because the water flows up toward the effluent launders as the suspended solids settle.

Clarifier Drives Potable Water. Dual concentric drum output drive units are typically used on solids contact and flocculating clarifiers or softeners. The rake drive is a low-speed, high-torque, totally enclosed gear drive with positive output torque overload protection.

In general, clarifiers are sized by the flow rate verses the separation chambers effective surface area (or, as it is more commonly called. the projected surface area). Therefore, the effectiveness of any clarifier is affected by the flow rate. The slower the flow, the better the results.

A thickening agent or thickener is a substance which can increase the viscosity of a liquid without substantially changing its other properties. Edible thickeners are commonly used to thicken sauces, soups, and puddings without altering their taste; thickeners are also used in paints, inks, explosives, and cosmetics.

The purpose of a clarifier is to remove solids, produce a cleaner effluent and concentrate solids. Concentration of solids removed from the wastewater reduces the volume of sludge for dewatering and/or disposal.

Wastewater Secondary Treatment: Clarifier. Some of the solids collected in the secondary clarifier (return activated sludge) are sent back to the aeration tank to treat more wastewater and the excess (waste activated sludge) is pumped to another location in the plant for further treatment.

DESCRIPTION: Solids contact clarifiers combine the process of mixing, flocculation and sedimentation in a single tank. The clarifier is comprised of a mixing zone, flocculation (reaction) zone, sludge blanket zone, and a clarification zone.

Clarifiers consist of tanks or basins which hold water or wastewater for a period sufficient to allow the floc and other suspended materials to settle to the bottom. The clarification process makes the water clear by removing all kinds of particles, sediments, oil, natural organic matter and color.

A sludge blanket clarifier is a treatment unit combining flocculation and upward flow sedimentation, which is more efficient compared to the conventional sedimentation tank. It has the ability to treat water at a faster rate, resulting in less space requirement.

difference between purifier and clarifier | compare the difference between similar terms

difference between purifier and clarifier | compare the difference between similar terms

The key difference between purifier and clarifier is that the purifier consists of a dam ring to create a line of separation between fuel and water whereas the clarifier consists of a sealing ring to prevent the fuel tank from water and dissolved impurities.

Purifier and clarifier are equipment that we use for cleaning or purification of fuel, mainly in case of ships and boats where it is common for fuel to get contaminated with water and other impurities. Though the basic purpose of both a purifier, as well as a clarifier, is the same (cleaning of fuel), there is some difference between purifier and clarifier, which we will be talking about in this article.

A purifier is a type of centrifugal separator that we can use to separate two liquids with different densities, i.e. water and fuel. A purifier can remove some solid impurities as well. We can modify a centrifuge to make it a purifier.

In that, we should use a second outlet pipe for water discharging process. Typically, untreated fuel oil contains a mixture of oil, solids and water. Hence, a centrifuge separates the fuel oil into three different layers. During this process, a small quantity of the oil remains in the bowl of the centrifuge to form a complete seal at the underside of the bowl. We call it a dam ring that separates the fuel and water.

Usually, marine fuel oil contains a little amount of water. Thus, the water outlet of the purifier has a greater radius than that of the fuel outlet. There is a gravity disc within the water outlet. It can control the radial position of the fuel-water interface. Eventually, the particulate matter will collect on the walls of the bowl. Furthermore, free water continuously discharges out from the purifier.

Clarifier is a type of centrifugal separator that we can use to separate solid impurities from fuel. However, a clarifier can remove some quantity of water as well. To form a simple clarifier, we can add an inlet and an outlet connection, and we can increase the efficiency by increasing the number of discs that we include in the clarifier; it increases the surface area, thus, helps in better separation.

During the process, the untreated oil is carried by the centrifugal forces towards the periphery of the bowl followed by passing through the set of discs. Consequently, the actual separation of fuel and dissolved impurities takes place. On each solid particle, two forces will act namely, centrifugal force and residual force. The centrifugal force acts on particles to push the particle upwards to direct it to the periphery. On the other hand, the residual force act on the denser particle and helps to drive the particles towards the periphery. However, the light particles are directed towards the centre of the bowl by the residual force and raised to the outlet connection. Here, denser particles are solid impurities whereas light particles are liquid particles (fuel oil).

A purifier is a type of centrifugal separator that we can use to separate two liquids with different densities while a clarifier is a type of centrifugal separator that we can use to separate solid impurities from fuel. The key difference between purifier and clarifier is that the purifier consists of a dam ring to create a line of separation between fuel and water whereas the clarifier consists of a sealing ring to prevent the fuel tank from water and dissolved impurities. In brief, a purifier separates the fuel from water along with some solid particles while the clarifier separates the fuel from solid impurities along with some water. Hence, this is also an important difference between purifier and clarifier.

Purifier and clarifier are two types of centrifugal separators that we can use to obtain a pure form of fuel oil, especially in ships. The key difference between purifier and clarifier is that the purifier consists of a dam ring to create a line of separation between fuel and water whereas the clarifier consists of a sealing ring to prevent the fuel tank from water and dissolved impurities.

Madhu is a graduate in Biological Sciences with BSc (Honours) Degree and currently persuing a Masters Degree in Industrial and Environmental Chemistry. With a mind rooted firmly to basic principals of chemistry and passion for ever evolving field of industrial chemistry, she is keenly interested to be a true companion for those who seek knowledge in the subject of chemistry.

Related Equipments