US Patent Class 202
DISTILLATION: APPARATUS




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Current as of: June, 1999
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  DF  CLASS NOTES
81  DF  APPARATUS
82  DF  .~ Systems
83  DF  .~.~ Portably mounted
84  DF  .~.~ Separatory and thermolytic
85  DF  .~.~ Thermolytic and autothermic
86  DF  .~.~.~ Retort and kiln
87  DF  .~.~.~.~ Retort heated by combustion
88  DF  .~.~.~ Kiln and directly heated chamber
89  DF  .~.~.~.~ Interchangeable
90  DF  .~.~.~.~ Chamber externally heated
91  DF  .~.~ Autothermic
92  DF  .~.~.~ Open kiln
93  DF  .~.~.~ Closed kiln
94  DF  .~.~.~.~ With steam generator
95  DF  .~.~.~.~ With residue quencher or cooler
96  DF  .~.~ Thermolytic
97  DF  .~.~.~ Stalls
98  DF  .~.~.~.~ Tunnels
99  DF  .~.~.~ Directly heated chamber
100  DF  .~.~.~.~ Rotary chamber
101  DF  .~.~.~ Dome ovens
102  DF  .~.~.~ Hearths
103  DF  .~.~.~.~ Distilland transferring
104  DF  .~.~.~.~.~ Vertical series
105  DF  .~.~.~ Retort
106  DF  .~.~.~.~ With steam generation
107  DF  .~.~.~.~ With digester
108  DF  .~.~.~.~ With direct heating
109  DF  .~.~.~.~ With cyclic volatile circulation
110  DF  .~.~.~.~ With distilland pressure
111  DF  .~.~.~.~ With recuperators and regenerators
112  DF  .~.~.~.~ With distillate fixing chamber
113  DF  .~.~.~.~ Plural
114  DF  .~.~.~.~.~ Common heating furnace
115  DF  .~.~.~.~.~ Annularly arranged
116  DF  .~.~.~.~.~ Vertical and horizontal or inclined
117  DF  .~.~.~.~ Conveying
118  DF  .~.~.~.~.~ Screw
119  DF  .~.~.~.~.~ Reciprocating
120  DF  .~.~.~.~ Vertical
121  DF  .~.~.~.~.~ With fluid injection
122  DF  .~.~.~.~.~ With recuperator
123  DF  .~.~.~.~.~ With regenerator
124  DF  .~.~.~.~.~ With heating chamber
125  DF  .~.~.~.~.~.~ Alternate reverse flow flues
126  DF  .~.~.~.~.~.~ Vertical flues
127  DF  .~.~.~.~.~.~ Circumvallate flues
128  DF  .~.~.~.~ Inclined
129  DF  .~.~.~.~.~ With fluid injection
130  DF  .~.~.~.~.~ With regenerator or recuperator
131  DF  .~.~.~.~.~ Rotary
132  DF  .~.~.~.~.~ Gas bench
133  DF  .~.~.~.~ Horizontal
134  DF  .~.~.~.~.~ With fluid injection to retort
135  DF  .~.~.~.~.~ Plural gas and/or air admission
136  DF  .~.~.~.~.~ Rotary
137  DF  .~.~.~.~.~ With heating chamber
138  DF  .~.~.~.~.~ With flues
139  DF  .~.~.~.~.~.~ Vertical
140  DF  .~.~.~.~.~.~.~ With recuperators
141  DF  .~.~.~.~.~.~.~ With reversible regenerators
142  DF  .~.~.~.~.~.~.~.~ Alternatively poor and/or rich gas fuel
143  DF  .~.~.~.~.~.~.~.~ Regenerators reversing along the system
144  DF  .~.~.~.~.~.~.~.~ Regenerators reversing across the system
145  DF  .~.~.~.~.~.~ Horizontal
146  DF  .~.~.~.~.~.~.~ With regenerators
147  DF  .~.~.~.~.~ Gas bench
148  DF  .~.~.~.~.~.~ With recuperator
149  DF  .~.~.~.~.~.~ With fluid injection
150  DF  .~.~.~.~ Preheating
151  DF  .~.~.~.~ Combustion control devices
152  DF  .~.~ Separatory
153  DF  .~.~.~ Still and column
154  DF  .~.~.~.~ Plural columns
155  DF  .~.~.~.~ Plural stills
156  DF  .~.~.~.~.~ Parallel
158  DF  .~.~.~ Column
159  DF  .~.~.~.~ With preheater
160  DF  .~.~.~.~ Automatic temperature and/or pressure control
161  DF  .~.~.~.~ Partial reflux condenser
162  DF  .~.~.~.~ Vapor-element by-pass
163  DF  .~.~.~ Still
164  DF  .~.~.~.~ Recovery from containers
165  DF  .~.~.~.~ Still and stove
166  DF  .~.~.~.~ Still and stand boiler
167  DF  .~.~.~.~ Still and feed-water heater
168  DF  .~.~.~.~ Still and extractor
169  DF  .~.~.~.~.~ Continuous extraction
170  DF  .~.~.~.~ Still extractor
172  DF  .~.~.~.~ Plural
173  DF  .~.~.~.~.~ Series
174  DF  .~.~.~.~.~.~ Multiple effect
175  DF  .~.~.~.~ With agitator
176  DF  .~.~.~.~ With distilland treating devices
177  DF  .~.~.~.~.~ Preheater
178  DF  .~.~.~.~.~.~ Straining
179  DF  .~.~.~.~.~.~ Dephlegmating
180  DF  .~.~.~.~.~.~ Condensing
181  DF  .~.~.~.~.~ Level control
182  DF  .~.~.~.~ With vapor-treating devices
183  DF  .~.~.~.~.~ Still and absorber
184  DF  .~.~.~.~.~.~ Still absorber
185.1  DF  .~.~.~.~.~ Condenser
185.2  DF  .~.~.~.~.~.~ Direct contact
185.3  DF  .~.~.~.~.~.~ Air condensers
185.4  DF  .~.~.~.~.~.~ Circulating coolant in cap or top closure
185.5  DF  .~.~.~.~.~.~ Helical coil for vapor stream
185.6  DF  .~.~.~.~.~.~ Helical coil for coolant
186  DF  .~.~.~.~.~.~ Plural
187  DF  .~.~.~.~.~.~ Concentric with still
188  DF  .~.~.~.~.~.~ Still supporting
189  DF  .~.~.~.~.~.~ Still supported
190  DF  .~.~.~.~.~.~.~ Cap (or closure)
191  DF  .~.~.~.~.~.~.~.~ Jacketed
192  DF  .~.~.~.~.~.~.~.~.~ Still feeding
193  DF  .~.~.~.~.~.~.~.~.~.~ Distilland-level control
194  DF  .~.~.~.~.~.~.~ Still feeding
195  DF  .~.~.~.~.~.~ Still feeding
196  DF  .~.~.~.~.~.~.~ Distilland-level control
197  DF  .~.~.~.~.~ With separator
198  DF  .~.~.~.~.~ Dephlegmator
199  DF  .~.~.~.~.~ Doubler
200  DF  .~.~.~.~.~ Filter
201  DF  .~.~.~.~.~ Aerator
202  DF  .~.~.~.~ With condensate-treating devices
203  DF  .~.~.~.~.~ Aeration
204  DF  .~.~.~.~.~ Decanter
205  DF  .~.~.~.~ Vacuum
206  DF  .~.~.~.~ Automatic heat control
*  DD  .~ Types
*  DD  .~.~ Separatory and thermolytic
207  DF  .~.~.~ Stump stills
208  DF  .~.~.~ Directly heated chamber
209  DF  .~.~.~ Still retort
*  DD  .~.~ Autothermic
210  DF  .~.~.~ Heap
211  DF  .~.~.~ Kiln
212  DF  .~.~.~.~ Arched
213  DF  .~.~.~.~ Partable and/or knockdown
214  DF  .~.~.~.~ Bottom discharge
215  DF  .~.~.~ Directly heated chamber
216  DF  .~.~.~.~ Rotary
217  DF  .~.~.~ Retort
218  DF  .~.~.~.~ Rotary and/or tilting
219  DF  .~.~.~.~ Molten bath
220  DF  .~.~.~.~ Flued
221  DF  .~.~.~.~ Vertical
222  DF  .~.~.~.~ Structural features
223  DF  .~.~.~.~.~ Wall
224  DF  .~.~.~.~.~ Shields
225  DF  .~.~.~.~.~ Cores
226  DF  .~.~.~.~ Residue treatment
227  DF  .~.~.~ Quencher
228  DF  .~.~.~.~ Gas or vapor circulating
229  DF  .~.~.~.~ Submersible chamber
230  DF  .~.~.~.~ Conveyer type
*  DD  .~.~ Separatory
232  DF  .~.~.~ Still
233  DF  .~.~.~.~ Directly and indirectly heated
234  DF  .~.~.~.~ Directly heated
235  DF  .~.~.~.~ Indirectly heated
236  DF  .~.~.~.~ Spray forming and filming
237  DF  .~.~.~.~ Tubular
238  DF  .~.~.~.~ Rotary and/or tiltable
239  DF  .~ Elements
241  DF  .~.~ Cleaning and decarbonizing
242  DF  .~.~ Closures
243  DF  .~.~.~ Fluid cooled
*  DD  .~.~.~ Dome ovens
244  DF  .~.~.~.~ Tunnel heads and lids
245  DF  .~.~.~.~ Removable
246  DF  .~.~.~.~ Hinged
247  DF  .~.~.~ Horizontal retort
248  DF  .~.~.~.~ Coke-oven type
249  DF  .~.~.~.~ Rotary retort
250  DF  .~.~.~ Top
251  DF  .~.~.~.~ Charging
252  DF  .~.~.~ Bottom
253  DF  .~.~.~.~ Cooling or quenching
254  DF  .~.~ Offtakes
255  DF  .~.~.~ Dip pipes and mains
256  DF  .~.~.~.~ Valved
257  DF  .~.~.~ Plural
258  DF  .~.~.~ Valved
259  DF  .~.~.~ Jacketed
260  DF  .~.~.~ Cooled
261  DF  .~.~.~ Residue offtakes
262  DF  .~.~ Feeding and discharging
263  DF  .~.~.~ Smoke escapes
264  DF  .~.~ Foam control
265  DF  .~.~ Agitating
266  DF  .~.~ Distilland supports and containers
267.1  DF  .~.~ Materials of construction
267.2  DF  .~.~.~ Corrugated walls
268  DF  .~.~ Expansion provisions
269  DF  .~.~ Air and gas seals
270  DF  .~ Accessories and details
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DIGEST
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DIG 1  DD  Scale problems digest