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Class Number: 203 Class Title: DISTILLATION: PROCESSES, SEPARATORY Subclass Subclass Number Title 1 WITH MEASURING, TESTING OR INSPECTING 2 .Of temperature or pressure 3 .Of concentration 4 INCLUDING PURGING OF THE SYSTEM 5 SEPARATING ISOTOPES OR TAUTOMERS 6 ADDITION OF MATERIAL TO DISTILLAND TO INHIBIT OR PREVENT REACTION OR TO STABILIZE 7 .For scale inhibiting or corrosion preventing 8 .For inhibiting or preventing a polymerization reaction 9 ..Of unsaturated hydrocarbon 10 WATER PURIFICATION ONLY 11 .Under pressure or vacuum 12 DISTILLING TO SEPARATE OR REMOVE ONLY WATER 13 .From nitric acid 14 .From organic compound 15 ..Organic acid 16 ...Acetic 17 ..Aldehyde or ketone 18 ..Alcohol 19 ...Ethanol 20 INCLUDING DEFOAMING OR INHIBITING FOAM 21 AND RECOVERING HEAT BY INDIRECT HEAT EXCHANGE 22 .Utilizing recovered heat for heating feed 23 ..Distillation residue as heat source 24 ..Compressed vapor as heat source 25 .Utilizing recovered heat for heating the distillation zone 26 ..Compressed vapor as heat source 27 .Utilizing recovered heat in subsequent step in process 28 WITH CHEMICAL REACTION 29 .Including step of adding catalyst or reacting material 30 ..For polymerizing unwanted component 31 ..Oxidizing material 32 ..Reducing material 33 ..Inorganic salt containing oxygen in the anion 34 ..Acid 35 ...Phosphoric or sulfuric acid 36 ..Alkaline oxide or hydroxide 37 ...Alkali metal hydroxide 38 ..Organic material 39 WITH DISPARATE PHYSICAL SEPARATION 40 .Of entrained particles from a vapor or gas 41 .Utilizing solid sorbent 42 .Utilizing liquid sorption of component from gas or vapor 43 .Utilizing liquid-liquid extracting of distillation product 44 ..Of distillate 45 ...And distilling raffinate phase 46 ...And distilling extractant phase 47 .Utilizing removing solid from liquid 48 ..By crystallizing 49 CONVECTIVE DISTILLATION WITH NORMALLY GASEOUS MEDIUM, E.G., AIR 50 ADDING MATERIAL TO DISTILLAND EXCEPT WATER OR STEAM PER SE 51 .At least two materialss 52 ..Mixtures of hydrocarbons 53 ..One material is water 54 ...A second material is aldehyde or ketone 55 ...A second material is an alcohol 56 ..One additive an alcohol or ether 57 .Organic compound 58 ..Heterocyclic 59 ..Amine 60 ..Ester 61 ..Acid 62 ..Aldehyde or ketone 63 ..Alcohol or ether 64 ...Polyhydroxy alcohol or ether derivative thereof 65 ...Hydroxy aromatic (e.g., Phenol) 66 ...Methanol 67 ..Halogenated hydrocarbon 68 ..Hydrocarbon 69 ...Aromatic 70 ...Acyclic 71 PLURAL DISTILLATIONS PERFORMED ON SAME MATERIAL 72 .One a filming distillation 73 .One a distillation under positive pressure or vacuum 74 ..Distillation of initial distillate 75 ...And return of distillation product to a previous distillation zone 76 ...Including the addition of water or steam 77 ...Initial distillation under positive pressure or vacuum 78 ..And returning distillation product to a previous distillation zone 79 ..Including the addition of water or steam 80 ..Initial distillation under positive pressure or vacuum 81 .Distillation of initial distillate 82 ..And returning distillation product to a previous distillation zone 83 ..Including the addition of water or steam 84 .And returning distillation product to a previous distillation zone 85 .Including the addition of water or steam 86 DISTILLATION IN APPARATUS OR ELEMENT OF SPECIFIC MATERIAL 87 WITH FRACTIONAL CONDENSATION OF VAPOR OUTSIDE STILL 88 FLASH VAPORIZATION OF DISTILLAND 89 FILMING OF DISTILLAND FOR VAPORIZATION 90 SPRAYING OF DISTILLAND INTO VAPORIZATION ZONE 91 VAPORIZATION ZONE UNDER POSITIVE PRESSURE OR VACUUM 92 .Including the addition of water or steam 93 ..And returning product of distillation step to distillation zone 94 .And returning product of distillation step to distillation zone 95 INCLUDING ADDITION OF WATER OR STEAM 96 .To distillation column 97 .And returning product of distillation step to distillation zone 98 AND RETURNING PRODUCT OF DISTILLATION STEP TO DISTILLATION ZONE 99 MISCELLANEOUS SEPARATORY * ****************************** * CROSS-REFERENCE ART COLLECTION * ******************************* 100 PARTICULAR TYPE OF HEATING * ****************************** * DIGESTS * ****************************** DIG 1 Solar still DIG 2 Laboratory distillation DIG 3 Acrylonitrile DIG 4 Heat pump DIG 5 Human waste DIG 6 Reactor-distillation DIG 7 Start up or shut down DIG 8 Waste heat DIG 9 Plural feed DIG 10 Vinyl acetate DIG 11 Batch distillation DIG 13 Spirits DIG 14 Ejector-eductor DIG 16 Combination DIG 17 Saline water conversion DIG 18 Control DIG 19 Sidestream DIG 20 Power plant DIG 21 Acrylic acid or ester DIG 22 Accessories DIG 23 Methanol DIG 24 Mobile, marine distiller DIG 25 Non-distilling bottoms treatment