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Class Information
Number: 159
Name: Concentrating evaporators >
Description: This class relates to apparatus and processes, which are not more specifically provided for elsewhere, peculiar to the concentration of solids held in solution or suspension, by evaporation of the liquid containing them in solution or suspension, and the recovery of the concentrate. The concentration may be carried to the point of crystallization or to dryness.










Class Number Class Name No. of Patents
159/DIG.18

Accumulator

2
159/DIG.19

Acid

38
159/DIG.20

Additive

29
159/45

Apparatus for graining and separating crystals

62
159/DIG.11

Biologicals

6
159/DIG.34

Caustic

9
159/22

Closed evaporating chambers

31
159/29

Directly heated

51
159/23

Indirectly heated

49
159/26.1

Heated tube

27
159/26.2

Inclined

23
159/27.1

Vertical

61
159/27.2

Detached separator

18
159/27.4

Downflow

38
159/27.5

Floating calandria

5
159/27.3

Multieffect in one casing

25
159/28.1

Heating elements

32
159/28.2

Baffled

10
159/28.4

Coils

18
159/28.6

Plate-type evaporator

81
159/28.3

Spur tubes

11
159/28.5

Tubular inserts

7
159/24.1

Regenerative

80
159/24.2

Heat recovery or regeneration

54
159/24.3

Thermocompression

35
159/25.1

Rotatable agitator or coil

31
159/25.2

Vertical axis agitator

17
159/31

Liquid traps or separators

35
159/30

Samplers

5
159/DIG.21

Coating

14
159/21

Combined closed and open pans

1
159/DIG.22

Condensate flashing

8
159/DIG.23

Cooling

19
159/DIG.24

Critical

1
159/DIG.31

Deaeration

9
159/DIG.25

Decant, press, centrifuge

12
159/DIG.30

Desuper heating

4
159/DIG.26

Electric field

32
159/DIG.1

Electric heat

26
159/DIG.2

Entrainment

27
159/5

Film type

29
159/6.1

Centrifugal

116
159/6.2

Wiped film

67
159/6.3

Horizontally

18
159/13.1

Moving film

77
159/14

Climbing

17
159/13.2

Contacting tube

98
159/13.3

Outside of tube

36
159/13.4

With gas wiping

30
159/15

Zigzag

25
159/7

Moving-film support

19
159/8

Gaseous current

9
159/9.1

Rotary drum or disk

6
159/10

Exterior surface

2
159/9.2

Treated material inside drum

10
159/11.1

Rotary drum or disk

29
159/12

Inclosing chamber

15
159/11.2

Internal film

25
159/11.3

Rotary disk

9
159/43.1

Fluid feed or discharge devices

122
159/44

Automatic

177
159/43.2

With alternating operating means

6
159/DIG.3

Fluidized bed

32
159/DIG.4

Foam

19
159/DIG.5

Freezing

6
159/16.1

Gaseous blast or current

145
159/16.3

Steam injection

73
159/16.2

Submerged combustion

23
159/DIG.32

Indirect heat exchange

43
159/DIG.6

Infrared

12
159/DIG.7

Magnetic coupling

5
159/DIG.27

Micropores

66
159/1.1

Miscellaneous

8
159/DIG.8

Multieffect or multistage

103
159/17.1

Multiple effects

90
159/19

Combined closed and open

1
159/17.4

Contiguous evaporators

14
159/17.2

Parallel fluid flow

25
159/18

Superimposed

41
159/20.1

Variable or counterflow

21
159/20.2

With effect switching means

1
159/17.3

Variant multistaging

27
159/32

Open pans

12
159/38

Furnace heated

7
159/40

Flues in pan

6
159/39

Liquid tubes in flue

0
159/41

With dampers

4
159/35

Interposed liquid receptacle

1
159/36

Steam and furnace heated

1
159/37

Steam heated

2
159/34

Tiltable, removable, or portable

12
159/33

With rakes

7
159/DIG.10

Organic

98
159/DIG.29

Pebble bed

3
159/DIG.28

Porous member

59
159/DIG.37

Ported

3
159/DIG.39

Power plant

9
159/46

Preliminary heaters and heat economizers

80
159/47.1

Processes

320
159/49

Film

219
159/47.2

Involving urea

20
159/47.3

Involving waste liquid

249
159/48.1

Spraying

191
159/48.2

Producing liquid product

39
159/901

Promoting circulation

142
159/DIG.40

Pumps

48
159/DIG.36

Rabbled hearth

1
159/DIG.12

Radioactive

67
159/DIG.41

Removable units

31
159/DIG.13

Scale

53
159/DIG.42

Seals

34
159/DIG.38

Seed

8
159/905

Sewage treatment

28
159/DIG.14

Soap

6
159/DIG.15

Special material

88
159/3

Spray type

45
159/4.01

Gaseous current

89
159/4.03

Antibridging

5
159/4.06

Bottom sprayer

19
159/4.02

Combustion product gas

45
159/4.04

Countercurrent

51
159/4.1

Heat recovery

18
159/4.07

Horizontial sprayer

9
159/4.08

Impinging jets

14
159/4.05

Intermediate gas outlet or inlet

5
159/4.09

Multistaging

24
159/4.3

Rotary drum with sprayer

11
159/4.2

Spinning sprayer

36
159/4.4

Steam drying or atomizing

26
159/42

Strainers or skimmers

17
159/2.1

Superheating and pressure release

129
159/2.2

With extruder

48
159/2.3

Multistage

55
159/DIG.9

Two liquids dried simultaneously

4
159/DIG.33

Two liquids, one a heat carrier

13
159/DIG.17

Two liquids

6
159/902

Using natural heat

8
159/903

Solar

93
159/904

Floating solar still

21
159/900

Using vibratory force

16
159/DIG.16

Vacuum

203
159/DIG.35

Viewports, peepsights, and sightglasses

2
159/906

Wick

22
 
 
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