Are there any general rules for flushing slurry lines?

Are there any general rules for flushing slurry lines?
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1 Answer

Answer :

Slurry lines should be flushed with a minimum fluid velocity of 10 ft/s and the total flushing liquid  volume should equal 3-6 times the total piping volume.
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Are there any general rules that should be considered when designing a slurry piping system? The following are items to consider when designing a piping system that will transport slurries:

Description : Are there any general rules that should be considered when designing a slurry piping system? The following are items to consider when designing a piping system that will transport slurries:

Last Answer : 1) Whenever possible, piping should be designed to be self-draining 2) Manual draining should be installed to drain sections of the piping when self-draining is not possible 3) Blow-out or ... flanges should be provided every 20 feet of horizontal pipe or after every two changes in direction

Flushing liquor used for cooling coke oven gas constitutes of (A) Ammoniacal liquor (B) K2CO3 solution (C) Dilute H2SO4 (D) Dilute HCl

Description : Flushing liquor used for cooling coke oven gas constitutes of (A) Ammoniacal liquor (B) K2CO3 solution (C) Dilute H2SO4 (D) Dilute HCl

Last Answer : (A) Ammoniacal liquor

Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of (A) Calcium sulphate (B) Sodium chloride(C) Sodium sulphate(D) Magnesium chloride

Description : Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of (A) Calcium sulphate (B) Sodium chloride (C) Sodium sulphate (D) Magnesium chloride

Last Answer : (B) Sodium chloride

__________ is used for producing a thick suspension from a thin slurry. (A) Cartridge filter (B) Rotary drum vacuum filter (C) Pressure filter thickener (D) Plate and frame filter press

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Last Answer : (C) Pressure filter thickener

Addition of filter aid to the slurry before filtration is done to __________ of the cake. (A) Increase the porosity (B) Increase the compressibility co-efficient (C) Decrease the porosity (D) Decrease the compressibility co-efficient

Description : Addition of filter aid to the slurry before filtration is done to __________ of the cake. (A) Increase the porosity (B) Increase the compressibility co-efficient (C) Decrease the porosity (D) Decrease the compressibility co-efficient

Last Answer : (A) Increase the porosity

Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called (A) Classification (B) Sedimentation (C) Clarification (D) Decantation

Description : Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called (A) Classification (B) Sedimentation (C) Clarification (D) Decantation

Last Answer : (B) Sedimentation

Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is (A) Added to the feed slurry (B) Pre-coated on the filter medium prior to filtration (C) Separated from the cake by dissolving solids or by burning it off (D) All 'a', 'b' & 'c'

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Last Answer : (D) All 'a', 'b' & 'c'

Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface. (A) Plane (B) Curved (C) Ribbed (D) Either (A) or (B)

Description : Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface. (A) Plane (B) Curved (C) Ribbed (D) Either (A) or (B)

Last Answer : (C) Ribbed

Filtration operation carried out by continuous increase of the inlet pressure of slurry, is called the __________ filtration. (A) Constant rate (B) Varying pressure (C) Varying rate (D) Constant pressure

Description : Filtration operation carried out by continuous increase of the inlet pressure of slurry, is called the __________ filtration. (A) Constant rate (B) Varying pressure (C) Varying rate (D) Constant pressure

Last Answer : (A) Constant rate

Percentage of drum submerged in the slurry in case of rotary drum filter is (A) 3 (B) 30 (C) 85 (D) 25

Description : Percentage of drum submerged in the slurry in case of rotary drum filter is (A) 3 (B) 30 (C) 85 (D) 25

Last Answer : (B) 30

__________ are used for the separation of coarse particles from a slurry of fine particles. (A) Thickeners (B) Classifiers (C) Hydrocyclones (D) Decanters

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Last Answer : (B) Classifiers

Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the (A) Coagulation (B) Flocculation (C) Sedimentation (D) Clarification

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Last Answer : (C) Sedimentation

Filtration capacity of a rotary drum vacuum filter depends upon the (A) Cake thickness (B) Characteristics of the feed slurry (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Filtration capacity of a rotary drum vacuum filter depends upon the (A) Cake thickness (B) Characteristics of the feed slurry (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

During filtration operation, the filtrate encounters the resistance of the (A) Filter medium (B) Cake (C) Channel carrying the slurry to the upstream side of the cake and filtrate away from the filter medium (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

A slurry is to be dried to produce flaky solid. Which dryer would you recommend? (A) Spray dryer (B) Drum dryer (C) Rotary dryer (D) Dielectric drye

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For pumping slurry, one can use a __________ pump. (A) Reciprocating (B) Diaphragm (C) Centrifugal (D) Pneumatic

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Last Answer : (B) Diaphragm

For the transfer of solution of thick slurry, the pump used is a __________ pump(A) Reciprocating(B) Gear(C) Diaphragm(D) Centrifugal.

Description : For the transfer of solution of thick slurry, the pump used is a __________ pump. (A) Reciprocating (B) Gear (C) Diaphragm (D) Centrifugal

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Which of the following can be used for the direct measurement of volumetric flow rate of slurry? (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Pitot tube

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Slurry reactors are characterised by the (A) Lack of intraparticle diffusion resistance (B) Presence of two mobile phases (C) Both (A) and (B) (D) Neither (A) nor (B)

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Last Answer : (C) Both (A) and (B)

Vegetable oils are hydrogenated in a __________ reactor. (A) Slurry (B) Plug flow (C) Homogeneous catalytic (D) None of these

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Oil is hydrogenated using nickel catalyst in a __________ reactor. (A) Batch (B) Slurry (C) Fluidised bed (D) Fixed bed

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The use of space time is preferred over the mean residence time in the design of a/an (A) Batch reactor (B) Ideal tubular-flow reactor (C) Slurry reactor (D) CSTR

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How can you determine the proper pipe thickness for a slurry line?

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What is the best way to handle bend or turns in slurry piping systems?

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What types of valves are recommended for slurry services?

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What is the best way to configure a bypass line in slurry services?

Description : What is the best way to configure a bypass line in slurry services?

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Should slurry pipes be sloped during horizontal runs?

Description : Should slurry pipes be sloped during horizontal runs?

Last Answer : If possible, slurry lines should indeed be sloped. Generally, to slope the pipes 1/2 inches for every 10 feet of pipe is recommended.

What do you think of the idea of putting your used toilet paper in the trash can instead of flushing it down the toilet?

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Last Answer : Is what we do in Greece; putting it in a dedicated waste bucket (with a lid). The sewer system is not up to par (especially (or exclusively; I’m not sure) on the islands. You get used to it. When I’m back in the Netherlands again, I always am reaching for the bucket, the first couple of days.

What should we do or not do before flushing the toilet as a routine?

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Is there something about California culture that precludes people from flushing public toilets?

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Men, what's your pee-licy on flushing?

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Would you ever consider not flushing to save the environment?

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Last Answer : I urinate outside whenever possible for this purpose. Defecation – only when on a field trip.

You go in me for brushing, For flushing, For rushing; But please go in me one at a time, Or someone might be blushing. What am I? -Riddles

Description : You go in me for brushing, For flushing, For rushing; But please go in me one at a time, Or someone might be blushing. What am I? -Riddles

Last Answer : A bathroom.

Meaning of the word "flushing"

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Flushing spiders into the drain?

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flushing 2nd floor toilet causes basement toilet to gurgle and splash onto seat and floor

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how long is the drive from 36-14 165th st flushing ny 11355 to six flags

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How do you fix a shower from going cold when turning on a faucet or flushing a toilet?

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The practice of flushing out germinable weed seeds before crop sowing is called

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The small sewers are cleaned by A. Flushing B. Cane rodding C. Wooden pills D. None of these

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Self-cleansing velocity is A. Velocity at dry weather flow B. Velocity of water at flushing C. Velocity at which no accumulation remains in the drains D. Velocity of water in a pressure filter

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Pick up the correct statement from the following: A. Small sewers are cleaned by flushing B. Medium sewers are cleaned by cane rodding C. Medium sewers may be cleaned by pills D. All the above

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Cost of fittings and their fixing is specified for the following sanitary fittings (A) Water closets (B) Flushing pipes (C) Lavatory basins (D) All the above

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The capacity of automatic flushing cistern connected with two urinal shall be (a) 10 litrs.* (b) 12.5 litrs. (c) 05 litrs. (d) None of these

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