Concentrating evaporators > Patents

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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