US Patent Class 95
GAS SEPARATION: PROCESSES



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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  WITH CONTROL RESPONSIVE TO SENSED CONDITION
2  DF  .~ Electric or electrostatic field (e.g., electrostatic precipitation, etc.)
3  DF  .~.~ Concentration sensed
4  DF  .~.~ Temperature sensed
5  DF  .~.~ Sparking sensed
6  DF  .~.~ Current sensed
7  DF  .~.~ Voltage sensed
8  DF  .~ Concentration sensed
9  DF  .~.~ pH sensed
10  DF  .~.~ Humidity sensed
11  DF  .~.~ Flow of fluid mixture to sorber stopped or diverted to other equipment, or sorbent regenerated
12  DF  .~.~ Gas flow rate modified
13  DF  .~.~ Sorbent flow rate modified
14  DF  .~ Temperature sensed
15  DF  .~.~ And pressure sensed
16  DF  .~.~ Modification of flow rate of liquid which is added to gas
17  DF  .~.~ Cooling
18  DF  .~.~ Heating
19  DF  .~ Pressure sensed
20  DF  .~.~ Apparatus cleaned
21  DF  .~.~ Sorbent regenerated
22  DF  .~.~ Gas flow rate modified
23  DF  .~ Gas flow rate sensed
24  DF  .~ Liquid level sensed
25  DF  WITH RECORDING OR SIGNALING CONDITION
26  DF  WITH TIMING OF OPERATION
27  DF  MAGNETIZED PARTICLE BED
28  DF  MAGNETIC SEPARATION
29  DF  SOUND WAVES USED
30  DF  .~ Degasification of liquid
31  DF  DIFFERENCE IN MOLECULAR VELOCITY, DENSITY, OR MOMENTUM OF GASES USED
32  DF  .~ Passing gases through nozzle
33  DF  .~.~ Directing gas streams toward one another
34  DF  .~ Centrifugal force
35  DF  .~.~ Created by rotating equipment
36  DF  LIQUID-SOLID SLURRY USED
37  DF  .~ Organic compound removed from gas
38  DF  .~ Halogen containing compound removed from gas
39  DF  COMPRESSING AND INDIRECT COOLING OF GASEOUS FLUID MIXTURE TO SEPARATE
40  DF  .~ And use of heat absorbing agent
41  DF  .~ And solid sorption
42  DF  .~ And liquid contact (e.g., scrubbing, sorption, etc.)
43  DF  SELECTIVE DIFFUSION OF GASES
44  DF  .~ Selective diffusion of gases through immobilized liquid
45  DF  .~ Selective diffusion of gases through substantially solid barrier (e.g., semipermeable membrane, etc.)
46  DF  .~.~ Degasification of liquid
47  DF  .~.~ Nitrogen or nitrogen containing compound permeates barrier
48  DF  .~.~ Halogen containing compound permeates barrier
49  DF  .~.~ Sulfur containing compound permeates barrier
50  DF  .~.~ Organic compound permeates barrier
51  DF  .~.~ Carbon dioxide or carbon monoxide permeates barrier
52  DF  .~.~ Water vapor permeates barrier
53  DF  .~.~ Helium permeates barrier
54  DF  .~.~ Oxygen permeates barrier
55  DF  .~.~ Hydrogen permeates barrier
56  DF  .~.~.~ Elemental metal or alloy barrier
57  DF  ELECTRIC OR ELECTROSTATIC FIELD (E.G., ELECTROSTATIC PRECIPITATION, ETC.)
58  DF  .~ With addition of solid, gas, or vapor
59  DF  .~.~ Electrode treating (e.g., coating, cleaning, etc.)
60  DF  .~.~ Heating or cooling
61  DF  .~.~ Solid is electrically conducting
62  DF  .~.~ Agglomerating gas-borne particles
63  DF  .~ And nonelectrical separation of fluid mixture
64  DF  .~.~ Liquid addition to gaseous fluid mixture
65  DF  .~.~.~ Liquid addition precedes electrical precipitation
66  DF  .~.~.~.~ With heating or cooling
67  DF  .~.~ By heating or cooling
68  DF  .~.~ Including cleaning or regeneration of separating means (e.g., particulate bed filter, deflector, etc.)
69  DF  .~.~ Distinct separation step precedes electric or electrostatic treatment
70  DF  .~.~ Distinct separation step follows electric or electrostatic treatment
71  DF  .~ With addition of liquid to gaseous fluid mixture
72  DF  .~.~ Vaporization of liquid
73  DF  .~ With heating or cooling
74  DF  .~ With cleaning of collector electrode
75  DF  .~.~ By liquid flushing
76  DF  .~.~ By scraping or vibrating
77  DF  .~ Continuously moving electrode
78  DF  .~ Including baffling, deflection, or restriction of gas flow
79  DF  .~ Plural separate stages or zones (e.g., separate ionization and collection regions, etc.)
80  DF  .~.~ Pulsing or time-varying electric field (e.g., AC, pulsed DC, etc.)
81  DF  .~ Pulsing or time-varying electric field (e.g., AC, pulsed DC, etc.)
82  DF  CHROMATOGRAPHY
83  DF  .~ Liquid supported on surface of capillary column
84  DF  .~ Liquid supported on particulate packing
85  DF  .~ Including use of gas flow distributor in column
86  DF  .~ Plural separate columns
87  DF  .~ With heating or cooling
88  DF  .~ Specific column packing or sorbent material (e.g., particle size, composition, etc.)
89  DF  .~ Injection, per se, without separation
90  DF  SOLID SORPTION
91  DF  .~ Soluble or deliquescent material used
92  DF  .~ And liquid contact (e.g., scrubbing, sorption, etc.)
93  DF  .~.~ Sweep gas used on solid sorbent
94  DF  .~.~ And recycle or reuse of contact liquid for further contact
95  DF  .~ Including reduction of pressure
96  DF  .~.~ Plural pressure varying steps (e.g., pressure swing adsorption, etc.)
97  DF  .~.~.~ Sweep gas used
98  DF  .~.~.~.~ Feed gas or constituent thereof is sweep gas
99  DF  .~.~.~.~.~ With heating or cooling
100  DF  .~.~.~.~.~ Stepped pressure reduction
101  DF  .~.~.~.~.~.~ Vacuum applied
102  DF  .~.~.~.~.~ Vacuum applied
103  DF  .~.~.~ Stepped pressure reduction
104  DF  .~.~ Sweep gas used
105  DF  .~.~.~ Feed gas or constituent thereof is sweep gas
106  DF  .~.~ With heating or cooling
107  DF  .~ Moving sorbent
108  DF  .~.~ Fluidized bed
109  DF  .~.~.~ Having gravity flow of sorbent from zone to zone
110  DF  .~.~ Gravity flow of sorbent from zone to zone
111  DF  .~.~.~ Sweep gas used
112  DF  .~.~.~.~ Steam is sweep gas
113  DF  .~.~ Rotating housing containing fixed sorbent or rotating plurality of housings
114  DF  .~ With plural indirect heat transfer steps on solid sorbent or gaseous fluid mixture or constituent thereof
115  DF  .~.~ Heating and cooling
116  DF  .~ Inorganic gas or liquid particle sorbed (e.g., vapor, mist, etc.)
117  DF  .~.~ Water sorbed
118  DF  .~.~.~ Plural separating treatments of gas by solid sorbent to remove water
119  DF  .~.~.~.~ And regeneration of any solid sorbent
120  DF  .~.~.~.~.~ Heating or cooling
121  DF  .~.~.~ And regeneration of solid sorbent
122  DF  .~.~.~.~ Sweep gas used
123  DF  .~.~.~.~.~ Hot sweep gas
124  DF  .~.~.~.~.~.~ And cooling of sweep gas
125  DF  .~.~.~.~.~.~ And cooling of solid sorbent
126  DF  .~.~.~.~ By heating
127  DF  .~.~ Noble gas sorbed
128  DF  .~.~ Nitrogen containing compound sorbed
129  DF  .~.~.~ Nitrogen oxide sorbed
130  DF  .~.~ Nitrogen sorbed
131  DF  .~.~ Halogen or halogen containing compound sorbed
132  DF  .~.~.~ Chlorine or chlorine containing compound sorbed
133  DF  .~.~ Metal or metal containing compound sorbed
134  DF  .~.~.~ Mercury sorbed
135  DF  .~.~ Sulfur containing compound sorbed
136  DF  .~.~.~ Hydrogen sulfide sorbed
137  DF  .~.~.~ Sulfur dioxide or sulfur trioxide sorbed
138  DF  .~.~ Oxygen or ozone sorbed
139  DF  .~.~ Carbon dioxide sorbed
140  DF  .~.~ Carbon monoxide sorbed
141  DF  .~ Organic gas or liquid particle sorbed (e.g., vapor, mist, etc.)
142  DF  .~.~ Halogen containing compound sorbed (e.g., phosgene, etc.)
143  DF  .~.~ Hydrocarbon sorbed
144  DF  .~.~.~ Alkene sorbed
145  DF  .~.~.~ Alkyne sorbed (e.g., acetylene, etc.)
146  DF  .~.~.~ Gasoline sorbed
147  DF  .~.~.~ Benzene ring containing compound sorbed
148  DF  .~ And regeneration
149  DF  LIQUID CONTACTING (E.G., SORPTION, SCRUBBING, ETC.)
150  DF  .~ Including foaming of liquid to aid in the separation
151  DF  .~ Mechanical agitation of liquid body to contact gaseous fluid mixture
152  DF  .~ Coagulating or flocculating agent
153  DF  .~ Hydrate inhibitor
154  DF  .~ Surfactant or wetting agent
155  DF  .~ Defoaming or antifoaming agent
156  DF  .~ And degasification of a liquid
157  DF  .~.~ Defoaming
158  DF  .~.~ Degasification step occurs first, with removed gas subsequently contacted by liquid
159  DF  .~.~ By stripping with gas
160  DF  .~.~.~ And reduction of pressure (e.g., flashing, etc.)
161  DF  .~.~.~.~ And heating
162  DF  .~.~.~.~.~ Steam is stripping gas
163  DF  .~.~.~.~ Liquid recycled or reused
164  DF  .~.~.~.~ Feed gas or constituent thereof is stripping gas
165  DF  .~.~.~ And heating
166  DF  .~.~.~.~ Liquid recycled or reused
167  DF  .~.~.~.~ Vaporized component of contact liquid is stripping gas
168  DF  .~.~.~.~ Steam is stripping gas
169  DF  .~.~.~ Liquid recycled or reused
170  DF  .~.~.~ Air is stripping gas
171  DF  .~.~.~ Inert stripping gas
172  DF  .~.~ By reduction of pressure (e.g., flashing, etc.)
173  DF  .~.~.~ And heating
174  DF  .~.~.~.~ Liquid recycled or reused
175  DF  .~.~.~ Vacuum applied
176  DF  .~.~.~ Removed gas recycled
177  DF  .~.~.~ Liquid recycled or reused
178  DF  .~.~ By heating
179  DF  .~.~.~ Liquid recycled or reused
180  DF  .~.~.~.~ Liquid cooling step before being recycled
181  DF  .~.~.~ Sulfur compound removed
182  DF  .~.~.~ Halogen compound removed
183  DF  .~.~.~ Carbon dioxide removed
184  DF  .~.~.~ Organic compound removed
185  DF  .~.~ By liquid flow modifying or mechanical agitating
186  DF  .~.~ Liquid recycled or reused
187  DF  .~ And recycle or reuse of contact liquid for further contact
188  DF  .~.~ After separation of liquid from contact liquid
189  DF  .~.~.~ And separation of solid from contact liquid
190  DF  .~.~.~ By liquid-liquid extraction or formation of azeotrope
191  DF  .~.~.~ By stripping with gas
192  DF  .~.~.~ By reduction of pressure (e.g., flashing, etc.)
193  DF  .~.~.~ By heating (e.g., fractional distillation, etc.)
194  DF  .~.~.~.~ Indirect heat exchange
195  DF  .~.~ After separation of solid from contact liquid
196  DF  .~.~.~ By filtration
197  DF  .~.~.~ By gravity separation
198  DF  .~.~ And deflection to remove liquid particles from gas
199  DF  .~.~ Liquid contact in plural serial stages
200  DF  .~.~.~ Removal of solid or liquid particles from gas
201  DF  .~.~.~ Reduction of pressure during liquid contact
202  DF  .~.~ Removal of solid or liquid particles from gas
203  DF  .~.~ Reduction of pressure
204  DF  .~ And recycle of gas for further contact
205  DF  .~ And separation of solid from contact liquid
206  DF  .~ And separation of liquid from contact liquid
207  DF  .~.~ By stripping with gas
208  DF  .~.~ By reduction of pressure (e.g., flashing, etc.)
209  DF  .~.~ By heating (e.g., fractional distillation, etc.)
210  DF  .~ On surface extending mass
211  DF  .~.~ Particulate media, fibrous media, or packing elements
212  DF  .~.~.~ And cleaning of particulate media, fibrous media, or packing elements
213  DF  .~.~ Apertured partition member
214  DF  .~ And filtration of gas
215  DF  .~.~ Including movement of filter
216  DF  .~ And deflection
217  DF  .~.~ Liquid is in form of curtain
218  DF  .~.~ Including movement of deflector
219  DF  .~.~ Including rotation of liquid, gaseous fluid mixture, or gas-liquid mixture through 360 degrees in stationary apparatus
220  DF  .~.~.~ With heating or cooling
221  DF  .~.~ Deflection in plural serial stages
222  DF  .~.~.~ Using diverse type deflectors
223  DF  .~ In plural serial stages
224  DF  .~.~ Liquid sprays
225  DF  .~.~.~ With heating or cooling
226  DF  .~ Gaseous fluid mixture discharged against or beneath surface of liquid body
227  DF  .~ With heating
228  DF  .~ With cooling
229  DF  .~.~ Cooling before liquid contacting
230  DF  .~ Inorganic gas, liquid particle, or solid particle sorbed (e.g., vapor, mist, dust, etc.)
231  DF  .~.~ Water sorbed
232  DF  .~.~ Nitrogen or nitrogen containing compound sorbed
233  DF  .~.~ Halogen or halogen containing compound sorbed
234  DF  .~.~ Metal or metal containing compound sorbed
235  DF  .~.~ Sulfur or sulfur containing compound sorbed
236  DF  .~.~ Carbon dioxide sorbed
237  DF  .~ Organic gas, liquid particle, or solid particle sorbed (e.g., vapor, mist, dust, etc.)
238  DF  .~.~ Alkyne sorbed (e.g., acetylene, etc.)
239  DF  .~.~ Cyclic compound sorbed
240  DF  .~.~ Alkene sorbed
241  DF  DEGASIFICATION OF LIQUID
242  DF  .~ Defoaming
243  DF  .~ Plural successive degassing treatments
244  DF  .~.~ Boiler feed water degassing
245  DF  .~.~ By stripping with gas
246  DF  .~.~.~ And reduction of pressure (e.g., flashing, etc.)
247  DF  .~.~ By reduction of pressure (e.g., flashing, etc.)
248  DF  .~.~.~ And liquid flow modifying or mechanical agitating
249  DF  .~.~.~.~ And heating
250  DF  .~.~.~ And heating
251  DF  .~.~ By heating
252  DF  .~.~.~ And liquid flow modifying or mechanical agitating
253  DF  .~ Emulsion breaking or multiple liquid separating
254  DF  .~ And subsequent handling of evolved gas, stripping gas, or residue liquid
255  DF  .~.~ Evolved gas removed by sweep gas
256  DF  .~.~ For indirect heat exchange
257  DF  .~.~.~ Gas condensed
258  DF  .~.~ Gas recycled or further separated
259  DF  .~.~ Liquid further separated
260  DF  .~ By liquid flow modifying or mechanical agitating
261  DF  .~.~ Centrifugal force
262  DF  .~.~ Impinging on baffle
263  DF  .~ By stripping with gas
264  DF  .~.~ Steam is stripping gas
265  DF  .~.~ Nitrogen is stripping gas
266  DF  .~ By reduction of pressure (e.g., flashing, etc.)
267  DF  DEFLECTING
268  DF  .~ And filtering
269  DF  .~ Centrifugal force
270  DF  .~.~ Created by rotating equipment
271  DF  .~.~ Tangential gas inflow (e.g., cyclone, etc.)
272  DF  .~ Tortuous flow path
273  DF  FILTERING
274  DF  .~ Through particulate solids
275  DF  .~.~ Moving bed
276  DF  .~.~ With cleaning of filter bed
277  DF  .~ Moving filter
278  DF  .~ With cleaning of filter
279  DF  .~.~ By use of gas
280  DF  .~.~.~ Pulsed gas flow
281  DF  .~.~ By use of liquid
282  DF  .~.~ By mechanical manipulation
283  DF  .~ With heating of filter
284  DF  .~ And reduction of pressure
285  DF  .~ Coated or chemically treated filter
286  DF  .~ Plural separate media
287  DF  .~.~ In series
288  DF  HEAT EXCHANGING
289  DF  .~ Cold wall-hot wall thermal diffusion
290  DF  .~ Condensing to solid
291  DF  MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTIONS
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900  DF  SOLID SORBENT
901  DF  .~ Activated carbon
902  DF  .~ Molecular sieve
903  DF  .~.~ Carbon