http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1044161-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ec23798883c032717b5121dc38906af |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02C20-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-304 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-302 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2259-41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2256-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2259-402 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-504 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-04 |
| filingDate | 1963-06-20^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1966-09-28^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1044161-A |
| titleOfInvention | Method and apparatus for purifying gaseous mixtures by cyclic adsorption |
| abstract | <PICT:1044161/C1/1> A pure nitrogen stream is obtained from the combustion products of burning a hydrocarbon fuel in air, adsorbing a major proportion of the contaminants in an absorbent, recovering a partially purified effluent therefrom, further adsorbing part of the remaining contaminants from the effluent in another adsorbent material, recovering a further purified gas, stopping adsorption in one of the adsorbents and purging the contaminants from the adsorbent with a portion of the further purified gas. A gas stream, e.g. nitrogen containing combustion products, e.g. CO2, water vapour, C2H2, SO2 and oxides of nitrogen; of a hydrocarbon fuel, e.g. burned in air, may be treated to give a substantially pure nitrogen stream which will only contain the inert gases, alternatively the purified effluent may contain combustibles, e.g. CO and H2 but these can be removed. The adsorbent material may be active C, glass wool, certain metal oxides, clay, fuller's earth, diatomaceous earth, bone char but preferably silica gel, activated alumina, microtraps, Mobile-beads and molecular sieves particularly of the type zeolite A having 4<\>rA pores although 5A molecular sieves are also specified. In a specific embodiment (the Figure) a nitrogen-rich gas stream having 5-20% CO2 and saturated with H2O vapour at 50-100 DEG F. enter surge tank 26 at 40-150 p.s.i.g. but preferably above 60 p.s.i.g., and passes through line 28 to valve 24 where it enters adsorber vessel 8 having a bed of 4A molecular sieve of particle size 1/16 -inch. The adsorber unit 2 operates on a short cycle of 30 seconds 5 minutes per adsorber vessel. The partially purified effluent passes to the second adsorber unit 4 through valve 18, line 20, and check valve 21 to valve 54 whence it enters adsorber vessel 46 wherein the remaining CO2 and water vapour are removed by a bed of 4<\>rA zeolite. The second adsorber unit 4 operates on long cycles of 1-5 hours and has electrical heaters 48 and 50 in beds 53 and 51, respectively, to compensate for heat losses particularly during desorption. Steam may be used for indirect heat exchange. The highly purified effluent leaves adsorber 46 by valve 56, line 66, check valve 68, flow regulating valve 70 and product line 72, valve 74 acts upon a back pressure regulator to maintain the pressure in the adsorber 66. Part of the purified effluent 1/4 -\ba1/2 , is diverted to manifold 82 and used to purge beds 5 and 53 by means of lines 86, valve 18, and line 14; and line 84, valve 56 and line 76 respectively, after having its pressure reduced. In the adsorber unit 2, valves 18 and 24 are linked to pneumatic cylinder 36 which is actuated according to the position of a solenoid valve 38 using impure feed gas whilst the valves 54 and 56 of the second adsorber unit 4 may be operated in a similar manner by cylinder 58 and solenoid valve 60. The solenoid valves 38 and 60 together with heaters 48 and 50 are controlled by a programmer. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115666005-A |
| priorityDate | 1963-04-15^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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