| IPC 6 English version | B01D04700-B01D06158 | |
| << B01D 35/00 - B01D 46/54 | B01D 63/00 - B01D 187:00 >> |
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SECTION B | – PERFORMING OPERATIONS; TRANSPORTING |
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PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL (furnaces, kilns, ovens, retorts, in general F 27) |
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SEPARATION (separating solids from solids by wet methods B 03 B, B 03 D, by pneumatic jigs or tables B 03 B, by other dry methods B 07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B 03 C; centrifuges, vortex apparatus B 04; presses per se for squeezing-out liquid from liquid-containing material B 30 B 9/02; treatment of water C 02 F, e.g. softening by ion-exchange C 02 F 1/42; arrangement or mounting of filters in air-conditioning, air-humidification or ventilation F 24 F 13/28) |
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47/ | 00 | Separating dispersed particles from gases, air or vapours by liquid as separating agent (B 01 D 45/10 takes precedence; fractionating columns or parts thereof B 01 D 3/16) |
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47/ | 02 | . | by passing the gas or air or vapour over or through a liquid bath |
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47/ | 04 | . | by passing the gas or air or vapour through foam |
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47/ | 05 | . | by condensation of the separating agent [3] |
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47/ | 06 | . | Spray cleaning |
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47/ | 08 | . . | with rotary nozzles |
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47/ | 10 | . | Venturi scrubbers |
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47/ | 12 | . | Washers with plural different washing sections (B 01 D 47/14 takes precedence) [3] |
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47/ | 14 | . | Packed scrubbers (packing elements B 01 J 19/30, B 01 J 19/32) [3] |
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47/ | 16 | . | Apparatus having rotary means, other than rotatable nozzles, for atomising the cleaning liquid |
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47/ | 18 | . . | with horizontally-arranged shafts |
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49/ | 00 | Separating dispersed particles from gases, air or vapours by other methods |
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49/ | 02 | . | by thermal repulsion |
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50/ | 00 | Combinations of devices for separating particles from gases or vapours |
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51/ | 00 | Auxiliary pretreatment of gases or vapours to be cleaned (preventing dust fires A 62 C; pretreatment specially adapted for magnetic or electrostatic separation B 03 C) |
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51/ | 02 | . | Amassing the particles, e.g. by flocculation |
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51/ | 04 | . . | by seeding, e.g. by adding particles |
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51/ | 06 | . . | by varying the pressure of the gas or vapour |
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51/ | 08 | . . . | by sound or ultrasonics |
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51/ | 10 | . | Conditioning the gas to be cleaned |
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53/ | 00 | Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols (recovery of volatile solvents by condensation B 01 D 5/00; sublimation B 01 D 7/00; cold traps, cold baffles B 01 D 8/00; for the separation of specific gases or vapours, see the relevant places, e.g. for purification or separation of nitrogen C 01 B 21/04; working-up undefined gaseous mixtures obtained by cracking hydrocarbon oils C 10 G 70/00; cleaning coal gas C 10 K; working-up of natural gas, or synthetic natural gas, C 10 L 3/10; separation of difficult-to-condense gases or air by liquefaction F 25 J; for investigating materials G 01 N 30/00) |
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Notes |
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(1) | Group B 01 D 53/34 takes precedence over groups B 01 D 53/02 to B 01 D 53/32. |
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(2) | In this group, it is desirable to add the indexing codes of groups B 01 D 111:00 to B 01 D 187:00, in the manner indicated: [6] |
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– | Groups B 01 D 111:00 to B 01 D 119:00, relating to the reactants used, in association with group B 01 D 53/34 and subgroups; [6] |
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– | Groups B 01 D 131:00 to B 01 D 141:00, relating to the catalysts used, in association with groups B 01 D 53/34 to B 01 D 53/94; [6] |
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– | Groups B 01 D 151:00 to B 01 D 161:00, relating to the type of treatment, in association with groups B 01 D 53/00, B 01 D 53/34 to B 01 D 53/73 and B 01 D 53/92; [6] |
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– | Groups B 01 D 171:00 to B 01 D 187:00, relating to the components removed, in association with groups B 01 D 53/00 to B 01 D 53/24, B 01 D 53/30 to B 01 D 53/34 and B 01 D 53/73 to B 01 D 53/94. [6] |
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The indexing codes should be unlinked. [6] |
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(3) | Processes using enzymes or micro-organisms in order to: [6] |
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(i) | liberate, separate or purify a pre-existing compound or composition, or to [6] |
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(ii) | treat textiles or clean solid surfaces of materials [6] |
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are further classified in subclass C 12 S. [6] |
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53/ | 02 | . | by adsorption |
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53/ | 04 | . . | with stationary adsorbents |
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53/ | 047 | . . . | Pressure swing adsorption [6] |
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53/ | 053 | . . . . | with storage or buffer vessel [6] |
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53/ | 06 | . . | with moving adsorbents |
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53/ | 08 | . . . | according to the "moving bed" method |
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53/ | 10 | . . . | with dispersed adsorbents |
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53/ | 12 | . . . . | according to the "fluidised technique" |
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53/ | 14 | . | by absorption |
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53/ | 18 | . . | Absorbing units; Liquid distributors therefor (B 01 D 3/16, B 01 D 3/26, B 01 D 3/30 take precedence; packing elements B 01 J 19/30, B 01 J 19/32) |
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53/ | 22 | . | by diffusion (manufacturing semi-permeable membranes B 01 D 67/00; form, structure or properties of semi-permeable membranes B 01 D 69/00; material for semi-permeable membranes B 01 D 71/00) |
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53/ | 24 | . | by centrifugal force (centrifuges B 04 B; cyclones B 04 C) |
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53/ | 26 | . | Drying gases or vapours |
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53/ | 28 | . . | Selection of materials for use as drying agents |
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53/ | 30 | . | Controlling by gas-analysis apparatus (regulating non electrical variables in general G 05 D) |
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53/ | 32 | . | by electrical effects other than those provided for in group B 01 D 61/00 [5] |
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53/ | 34 | . | Chemical or biological purification of waste gases [3,6] |
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53/ | 36 | (transferred to B 01 D 53/38 to B 01 D 53/96) |
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53/ | 38 | . . | Removing components of undefined structure [6] |
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53/ | 40 | . . . | Acidic components (B 01 D 53/44 takes precedence) [6] |
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53/ | 42 | . . . | Basic components (B 01 D 53/44 takes precedence) [6] |
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53/ | 44 | . . . | Organic components [6] |
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53/ | 46 | . . | Removing components of defined structure [6] |
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53/ | 48 | . . . | Sulfur compounds [6] |
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53/ | 50 | . . . . | Sulfur oxides (B 01 D 53/60 takes precedence) [6] |
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53/ | 52 | . . . . | Hydrogen sulfide [6] |
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53/ | 54 | . . . | Nitrogen compounds [6] |
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53/ | 56 | . . . . | Nitrogen oxides (B 01 D 53/60 takes precedence) [6] |
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53/ | 58 | . . . . | Ammonia [6] |
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53/ | 60 | . . . | Simultaneously removing sulfur oxides and nitrogen oxides [6] |
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53/ | 62 | . . . | Carbon oxides [6] |
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53/ | 64 | . . . | Heavy metals or compounds thereof, e.g. mercury [6] |
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53/ | 66 | . . . | Ozone [6] |
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53/ | 68 | . . . | Halogens or halogen compounds [6] |
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53/ | 70 | . . . . | Organic halogen compounds [6] |
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53/ | 72 | . . . | Organic compounds not provided for in groups B 01 D 53/48 to B 01 D 53/70, e.g. hydrocarbons [6] |
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53/ | 73 | . . | After-treatment of removed components [6] |
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53/ | 74 | . . | General processes for purification of waste gases; Apparatus or devices specially adapted therefor (B 01 D 53/92 takes precedence) [6] |
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53/ | 75 | . . . | Multi-step processes [6] |
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53/ | 76 | . . . | Gas phase processes, e.g. by using aerosols [6] |
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53/ | 77 | . . . | Liquid phase processes [6] |
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53/ | 78 | . . . . | with gas-liquid contact [6] |
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53/ | 79 | . . . . | Injecting reactants [6] |
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53/ | 80 | . . . | Semi-solid phase processes, i.e. by using slurries [6] |
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53/ | 81 | . . . | Solid phase processes [6] |
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53/ | 82 | . . . . | with stationary reactants [6] |
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53/ | 83 | . . . . | with moving reactants [6] |
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53/ | 84 | . . . | Biological processes [6] |
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53/ | 85 | . . . . | with gas-solid contact [6] |
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53/ | 86 | . . . | Catalytic processes [6] |
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53/ | 88 | . . . . | Handling or mounting catalysts [6] |
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53/ | 90 | . . . . | Injecting reactants [6] |
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53/ | 92 | . . | of engine exhaust gases (exhaust apparatus having means for purifying or otherwise treating exhaust gases F 01 N 3/00) [6] |
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53/ | 94 | . . . | by catalytic processes [6] |
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53/ | 96 | . . | Regeneration, reactivation or recycling of reactants [6] |
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57/ | 00 | Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B 03 C |
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57/ | 02 | . | by electrophoresis (treatment of water, waste water, sewage or sludge by electrophoresis C 02 F 1/469; electrophoretic production of compounds or non-metals C 25 B 7/00; investigating or analysing materials by using eletrophoresis G 01 N 27/26) [3,5] |
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59/ | 00 | Separation of different isotopes of the same chemical element (preventing occurrence of critical conditions when producing fissile material G 21; shielding from radioactivity G 21 F) |
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59/ | 02 | . | Separation by phase transition |
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59/ | 04 | . . | by distillation |
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59/ | 06 | . . | by fractional melting; by zone melting |
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59/ | 08 | . . | by fractional crystallisation, by precipitation, by zone freezing |
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59/ | 10 | . | Separation by diffusion |
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59/ | 12 | . . | by diffusion through barriers |
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59/ | 14 | . . . | Construction of the barrier |
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59/ | 16 | . . | by thermal diffusion |
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59/ | 18 | . . | by separation jets |
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59/ | 20 | . | Separation by centrifuging |
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59/ | 22 | . | Separation by extracting |
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59/ | 24 | . . | by solvent extraction |
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59/ | 26 | . . | by sorption, i.e. absorption, adsorption, persorption |
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59/ | 28 | . | Separation by chemical exchange |
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59/ | 30 | . . | by ion exchange |
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59/ | 32 | . . | by exchange between fluids |
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59/ | 33 | . . . | involving dual temperature exchange [2] |
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59/ | 34 | . | Separation by photochemical methods |
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59/ | 36 | . | Separation by biological methods |
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59/ | 38 | . | Separation by electrochemical methods (in general B 01 J) |
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59/ | 40 | . . | by electrolysis |
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59/ | 42 | . . | by electromigration; by electrophoresis |
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59/ | 44 | . | Separation by mass spectrography (particle spectrometer or separator tubes H 01 J 49/00) |
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59/ | 46 | . . | using only electrostatic fields |
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59/ | 48 | . . | using electrostatic and magnetic fields |
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59/ | 50 | . | Separation involving two or more processes covered by different groups selected from groups B 01 D 59/02, B 01 D 59/10, B 01 D 59/20, B 01 D 59/22, B 01 D 59/28, B 01 D 59/34, B 01 D 59/36, B 01 D 59/38, B 01 D 59/44 |
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Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus specially adapted therefor; Semi-permeable membranes or their production (separation of gases or vapours by diffusion B 01 D 53/22; treatment of milk by dialysis, reverse osmosis or ultrafiltration A 23 C 9/142, by electrodialysis A 23 C 9/144; artificial kidneys A 61 M 1/14; treatment of water by dialysis, osmosis or reverse osmosis C 02 F 1/44, by electrodialysis C 02 F 1/469; apparatus for enzymology or microbiology with dialysis means C 12 M 1/12; production or purification of sugar juices, e.g. by osmosis, C 13 D 3/16; extraction of sugar from molasses, e.g. by osmosis, C 13 J 1/08; diaphragms for electrolysis C 25 B 13/00, C 25 C 7/04; osmosis as energy source F 03 G 7/00) [5] |
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Note |
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In groups B 01 D 61/00 to B 01 D 71/00, in the absence of an indication to the contrary, classification is made in the last appropriate place (in respect of group B 01 D 71/00, see also Note (1) following that group). [5] |
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61/ | 00 | Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor [5] |
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61/ | 02 | . | Reverse osmosis; Hyperfiltration [5] |
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61/ | 04 | . . | Feed pretreatment [5] |
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61/ | 06 | . . | Energy recovery [5] |
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61/ | 08 | . . | Apparatus therefor [5] |
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61/ | 10 | . . | Accessories; Auxiliary operations [5] |
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61/ | 12 | . . | Controlling or regulating [5] |
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61/ | 14 | . | Ultrafiltration; Microfiltration [5] |
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61/ | 16 | . . | Feed pretreatment [5] |
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61/ | 18 | . . | Apparatus therefor [5] |
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61/ | 20 | . . | Accessories; Auxiliary operations [5] |
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61/ | 22 | . . | Controlling or regulating [5] |
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61/ | 24 | . | Dialysis [5] |
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61/ | 26 | . . | Dialysate solution flow, e.g. preparation, regeneration [5] |
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61/ | 28 | . . | Apparatus therefor [5] |
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61/ | 30 | . . | Accessories; Auxiliary operation [5] |
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61/ | 32 | . . | Controlling or regulating [5] |
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61/ | 34 | . . . | Measuring ultrafiltrate during dialysis [5] |
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61/ | 36 | . | Pervaporation; Membrane distillation; Liquid permeation [5] |
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61/ | 38 | . | Liquid-membrane separation [5] |
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61/ | 40 | . . | using emulsion-type membranes [5] |
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61/ | 42 | . | Electrodialysis; Electro-osmosis [5] |
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61/ | 44 | . . | Ion-selective electrodialysis [5] |
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61/ | 46 | . . . | Apparatus therefor [5] |
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61/ | 48 | . . . . | having one or more compartments filled with ion-exchange material [5] |
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61/ | 50 | . . . . | Stacks of the plate-and-frame type [5] |
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61/ | 52 | . . . | Accessories; Auxiliary operation [5] |
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61/ | 54 | . . . | Controlling or regulating [5] |
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61/ | 56 | . . | Electro-osmotic dewatering [5] |
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61/ | 58 | . | Multistep processes [5] |
| << B01D 35/00 - B01D 46/54 | ^ | B01D 63/00 - B01D 187:00 >> |