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	37
159/DIG.20	Additive	24
159/45	Apparatus for graining and separating crystals	60
159/DIG.11	Biologicals	6
159/DIG.34	Caustic	9
159/22	Closed evaporating chambers	22
159/29	Directly heated	42
159/23	Indirectly heated	45
159/26.1	Heated tube	21
159/26.2	Inclined	17
159/27.1	Vertical	53
159/27.2	Detached separator	18
159/27.4	Downflow	36
159/27.5	Floating calandria	4
159/27.3	Multieffect in one casing	20
159/28.1	Heating elements	30
159/28.2	Baffled	6
159/28.4	Coils	18
159/28.6	Plate-type evaporator	73
159/28.3	Spur tubes	11
159/28.5	Tubular inserts	6
159/24.1	Regenerative	61
159/24.2	Heat recovery or regeneration	43
159/24.3	Thermocompression	32
159/25.1	Rotatable agitator or coil	30
159/25.2	Vertical axis agitator	16
159/31	Liquid traps or separators	33
159/30	Samplers	5
159/DIG.21	Coating	11
159/21	Combined closed and open pans	1
159/DIG.22	Condensate flashing	8
159/DIG.23	Cooling	17
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	31
159/DIG.1	Electric heat	23
159/DIG.2	Entrainment	25
159/5	Film type	25
159/6.1	Centrifugal	103
159/6.2	Wiped film	62
159/6.3	Horizontally	17
159/13.1	Moving film	71
159/14	Climbing	16
159/13.2	Contacting tube	87
159/13.3	Outside of tube	36
159/13.4	With gas wiping	30
159/15	Zigzag	22
159/7	Moving-film support	15
159/8	Gaseous current	8
159/9.1	Rotary drum or disk	5
159/10	Exterior surface	2
159/9.2	Treated material inside drum	10
159/11.1	Rotary drum or disk	28
159/12	Inclosing chamber	12
159/11.2	Internal film	21
159/11.3	Rotary disk	8
159/43.1	Fluid feed or discharge devices	99
159/44	Automatic	131
159/43.2	With alternating operating means	5
159/DIG.3	Fluidized bed	30
159/DIG.4	Foam	18
159/DIG.5	Freezing	6
159/16.1	Gaseous blast or current	120
159/16.3	Steam injection	73
159/16.2	Submerged combustion	20
159/DIG.32	Indirect heat exchange	43
159/DIG.6	Infrared	11
159/DIG.7	Magnetic coupling	5
159/DIG.27	Micropores	59
159/1.1	Miscellaneous	8
159/DIG.8	Multieffect or multistage	85
159/17.1	Multiple effects	78
159/19	Combined closed and open	1
159/17.4	Contiguous evaporators	13
159/17.2	Parallel fluid flow	20
159/18	Superimposed	38
159/20.1	Variable or counterflow	21
159/20.2	With effect switching means	0
159/17.3	Variant multistaging	25
159/32	Open pans	10
159/38	Furnace heated	3
159/40	Flues in pan	6
159/39	Liquid tubes in flue	0
159/41	With dampers	2
159/35	Interposed liquid receptacle	1
159/36	Steam and furnace heated	1
159/37	Steam heated	2
159/34	Tiltable, removable, or portable	9
159/33	With rakes	6
159/DIG.10	Organic	95
159/DIG.29	Pebble bed	3
159/DIG.28	Porous member	50
159/DIG.37	Ported	2
159/DIG.39	Power plant	7
159/46	Preliminary heaters and heat economizers	60
159/47.1	Processes	286
159/49	Film	199
159/47.2	Involving urea	19
159/47.3	Involving waste liquid	222
159/48.1	Spraying	168
159/48.2	Producing liquid product	36
159/901	Promoting circulation	114
159/DIG.40	Pumps	38
159/DIG.36	Rabbled hearth	1
159/DIG.12	Radioactive	64
159/DIG.41	Removable units	28
159/DIG.13	Scale	53
159/DIG.42	Seals	32
159/DIG.38	Seed	8
159/905	Sewage treatment	26
159/DIG.14	Soap	6
159/DIG.15	Special material	70
159/3	Spray type	38
159/4.01	Gaseous current	78
159/4.03	Antibridging	5
159/4.06	Bottom sprayer	18
159/4.02	Combustion product gas	42
159/4.04	Countercurrent	46
159/4.1	Heat recovery	17
159/4.07	Horizontial sprayer	8
159/4.08	Impinging jets	13
159/4.05	Intermediate gas outlet or inlet	5
159/4.09	Multistaging	22
159/4.3	Rotary drum with sprayer	11
159/4.2	Spinning sprayer	31
159/4.4	Steam drying or atomizing	21
159/42	Strainers or skimmers	15
159/2.1	Superheating and pressure release	109
159/2.2	With extruder	47
159/2.3	Multistage	45
159/DIG.9	Two liquids dried simultaneously	3
159/DIG.33	Two liquids, one a heat carrier	13
159/DIG.17	Two liquids	6
159/902	Using natural heat	7
159/903	Solar	74
159/904	Floating solar still	19
159/900	Using vibratory force	16
159/DIG.16	Vacuum	171
159/DIG.35	Viewports, peepsights, and sightglasses	2
159/906	Wick	19