US Patent Class 203
DISTILLATION: PROCESSES, SEPARATORY



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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  WITH MEASURING, TESTING OR INSPECTING
2  DF  .~ Of temperature or pressure
3  DF  .~ Of concentration
4  DF  INCLUDING PURGING OF THE SYSTEM
5  DF  SEPARATING ISOTOPES OR TAUTOMERS
6  DF  ADDITION OF MATERIAL TO DISTILLAND TO INHIBIT OR PREVENT REACTION OR TO STABILIZE
7  DF  .~ For scale inhibiting or corrosion preventing
8  DF  .~ For inhibiting or preventing a polymerization reaction
9  DF  .~.~ Of unsaturated hydrocarbon
10  DF  WATER PURIFICATION ONLY
11  DF  .~ Under pressure or vacuum
12  DF  DISTILLING TO SEPARATE OR REMOVE ONLY WATER
13  DF  .~ From nitric acid
14  DF  .~ From organic compound
15  DF  .~.~ Organic acid
16  DF  .~.~.~ Acetic
17  DF  .~.~ Aldehyde or ketone
18  DF  .~.~ Alcohol
19  DF  .~.~.~ Ethanol
20  DF  INCLUDING DEFOAMING OR INHIBITING FOAM
21  DF  AND RECOVERING HEAT BY INDIRECT HEAT EXCHANGE
22  DF  .~ Utilizing recovered heat for heating feed
23  DF  .~.~ Distillation residue as heat source
24  DF  .~.~ Compressed vapor as heat source
25  DF  .~ Utilizing recovered heat for heating the distillation zone
26  DF  .~.~ Compressed vapor as heat source
27  DF  .~ Utilizing recovered heat in subsequent step in process
28  DF  WITH CHEMICAL REACTION
29  DF  .~ Including step of adding catalyst or reacting material
30  DF  .~.~ For polymerizing unwanted component
31  DF  .~.~ Oxidizing material
32  DF  .~.~ Reducing material
33  DF  .~.~ Inorganic salt containing oxygen in the anion
34  DF  .~.~ Acid
35  DF  .~.~.~ Phosphoric or sulfuric acid
36  DF  .~.~ Alkaline oxide or hydroxide
37  DF  .~.~.~ Alkali metal hydroxide
38  DF  .~.~ Organic material
39  DF  WITH DISPARATE PHYSICAL SEPARATION
40  DF  .~ Of entrained particles from a vapor or gas
41  DF  .~ Utilizing solid sorbent
42  DF  .~ Utilizing liquid sorption of component from gas or vapor
43  DF  .~ Utilizing liquid-liquid extracting of distillation product
44  DF  .~.~ Of distillate
45  DF  .~.~.~ And distilling raffinate phase
46  DF  .~.~.~ And distilling extractant phase
47  DF  .~ Utilizing removing solid from liquid
48  DF  .~.~ By crystallizing
49  DF  CONVECTIVE DISTILLATION WITH NORMALLY GASEOUS MEDIUM, E.G., AIR
50  DF  ADDING MATERIAL TO DISTILLAND EXCEPT WATER OR STEAM PER SE
51  DF  .~ At least two materials
52  DF  .~.~ Mixtures of hydrocarbons
53  DF  .~.~ One material is water
54  DF  .~.~.~ A second material is aldehyde or ketone
55  DF  .~.~.~ A second material is an alcohol
56  DF  .~.~ One additive an alcohol or ether
57  DF  .~ Organic compound
58  DF  .~.~ Heterocyclic
59  DF  .~.~ Amine
60  DF  .~.~ Ester
61  DF  .~.~ Acid
62  DF  .~.~ Aldehyde or ketone
63  DF  .~.~ Alcohol or ether
64  DF  .~.~.~ Polyhydroxy alcohol or ether derivative thereof
65  DF  .~.~.~ Hydroxy aromatic (e.g., Phenol)
66  DF  .~.~.~ Methanol
67  DF  .~.~ Halogenated hydrocarbon
68  DF  .~.~ Hydrocarbon
69  DF  .~.~.~ Aromatic
70  DF  .~.~.~ Acyclic
71  DF  PLURAL DISTILLATIONS PERFORMED ON SAME MATERIAL
72  DF  .~ One a filming distillation
73  DF  .~ One a distillation under positive pressure or vacuum
74  DF  .~.~ Distillation of initial distillate
75  DF  .~.~.~ And return of distillation product to a previous distillation zone
76  DF  .~.~.~ Including the addition of water or steam
77  DF  .~.~.~ Initial distillation under positive pressure or vacuum
78  DF  .~.~ And returning distillation product to a previous distillation zone
79  DF  .~.~ Including the addition of water or steam
80  DF  .~.~ Initial distillation under positive pressure or vacuum
81  DF  .~ Distillation of initial distillate
82  DF  .~.~ And returning distillation product to a previous distillation zone
83  DF  .~.~ Including the addition of water or steam
84  DF  .~ And returning distillation product to a previous distillation zone
85  DF  .~ Including the addition of water or steam
86  DF  DISTILLATION IN APPARATUS OR ELEMENT OF SPECIFIC MATERIAL
87  DF  WITH FRACTIONAL CONDENSATION OF VAPOR OUTSIDE STILL
88  DF  FLASH VAPORIZATION OF DISTILLAND
89  DF  FILMING OF DISTILLAND FOR VAPORIZATION
90  DF  SPRAYING OF DISTILLAND INTO VAPORIZATION ZONE
91  DF  VAPORIZATION ZONE UNDER POSITIVE PRESSURE OR VACUUM
92  DF  .~ Including the addition of water or steam
93  DF  .~.~ And returning product of distillation step to distillation zone
94  DF  .~ And returning product of distillation step to distillation zone
95  DF  INCLUDING ADDITION OF WATER OR STEAM
96  DF  .~ To distillation column
97  DF  .~ And returning product of distillation step to distillation zone
98  DF  AND RETURNING PRODUCT OF DISTILLATION STEP TO DISTILLATION ZONE
99  DF  MISCELLANEOUS SEPARATORY
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CROSS-REFERENCE ART COLLECTION
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100  DF  PARTICULAR TYPE OF HEATING
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DIGESTS
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DIG 1  DD  Solar still
DIG 2  DD  Laboratory distillation
DIG 3  DD  Acrylonitrile
DIG 4  DD  Heat pump
DIG 5  DD  Human waste
DIG 6  DD  Reactor-distillation
DIG 7  DD  Start up or shut down
DIG 8  DD  Waste heat
DIG 9  DD  Plural feed
DIG 10  DD  Vinyl acetate
DIG 11  DD  Batch distillation
DIG 13  DD  Spirits
DIG 14  DD  Ejector-eductor
DIG 16  DD  Combination
DIG 17  DD  Saline water conversion
DIG 18  DD  Control
DIG 19  DD  Sidestream
DIG 20  DD  Power plant
DIG 21  DD  Acrylic acid or ester
DIG 22  DD  Accessories
DIG 23  DD  Methanol
DIG 24  DD  Mobile, marine distiller
DIG 25  DD  Non-distilling bottoms treatment