UNIT OPERATIONS IN CHEMICAL INDUSTRIES BY DR.LEK WANTHA 1.

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1

UNIT OPERATIONS IN CHEMICAL

INDUSTRIES

BYDR.LEK WANTHA

2

Differential Pressure Flowmeters

Rotameters

3

Orifice meters

Differential Pressure Flowmeters

4

Venturi flowmeters

Differential Pressure Flowmeters

5

Pitot tubes

Differential Pressure Flowmeters

6

Pumps

Centrifugal pumps

Reciprocating pumps

7

Pumps

Gear pumps Screw rotor pump

8

Pumps

Rotary lobe pumps

9

Fans

Paddle wheel Curved fan Radial-tip fan

10

Fans

Wheel designs for conveying fan

11

Pressure Blowers

Pressure blowers

12

Compressors

Sliding vane Straight lobe Reciprocating compressor

13

Conveyors

Belt conveyor

Screw conveyor Vibratory conveyor

14

Storage Tanks

Underground storage tank Aboveground tank

15

Valves

Gate valve

Control valve

Control valve

16

Mixers

Kneader

Extruder Ribbon mixer

Solid-solid and solid-liquid mixers

17

Mixers

Liquid-liquid and liquid-gas mixers

18

Impellers

Radial flow impellers

Curved Blade Disc TurbineFlat Blade Turbine Anchor Impeller

Axial flow impellers

Pitched Blade Turbine Helical Ribbon ImpellerThree Blade/Marine Impeller

19

Size reduction

Crushers

Jaw crusher

Gyratory crusher Smooth-roll crusher

20

Size reduction

Grinders

Impactor

Roller mill Ball mill

21

Screening

Gyrated screen Vibration screen

Sieve

22

Filters

Plate and frame filters

23

Filters

Pressure leaf filters

24

Filters

Vacuum filters

25

Thickeners and Clarifiers

Circular thickeners

26

Thickeners and Clarifiers

Cyclones

Tubular centrifuge

Disk centrifuge

Centrifuges

27

Electrostatic Precipitators

Electrostatic precipitators

28

Boilers

Steam boilers

29

Condensers

Water cooled condensers

30

Cooling Towers

Cooling towers

31

Heat Exchangers

shell and tube heat exchangers

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Plate and frame heat exchangers

Plate and frame heat exchangers

33

Batch Reactors

Batch reactors

34

Continuous Stirred Tank Reactors (CSTR)

CSTRs

35

Plug Flow Reactors (PFR)

PFRs

36

Fluidized Bed Reactors

Fluidized bed reactors

37

Packed Bed Reactors

Packed bed reactors

38

Slurry Reactors

Slurry reactors

39

Absorbers

Absorbers

40

Absorbers

Packed bed column (left) and tray column (right)

41

Distillation

Distillation columns

42

Strippers

Strippers

43

Strippers

Sieve tray air stripper (left) and packed tower air stripper (right)

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Adsorbers

Adsorbers

45

Crystallizers

Crystallizers

46

Dryers

47

Extractors

48

Evaporators