http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113121301-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-11 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C9-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C9-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-04 |
| filingDate | 2021-05-18^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-10-28^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-10-28^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113121301-B |
| titleOfInvention | Method for recovering light hydrocarbons in refinery dry gas |
| abstract | The invention provides a method for recovering light hydrocarbons in refinery dry gas. The method comprises the steps of compressing, desulfurizing and decarbonizing, recompressing and cooling the saturated dry gas in a refinery, and then adopting a "three-tower absorption and six-tower process" method. The combined sequential absorption process recovers the light hydrocarbons in the refinery dry gas; the present invention uses three absorbents, which are sequentially absorbed: the first absorbent is used to absorb the C2+ components in the refinery dry gas; the second absorbent is used for It is used to absorb the first absorbent entrained in the dry gas at the top of the first absorption tower; the third absorbent is used to absorb the second absorbent entrained in the dry gas from the top of the second absorption tower; The recovery rate of medium and light hydrocarbons (ethane, propane) can effectively solve the problems of high energy consumption, large investment and "non-dry" dry gas existing in the recovery process of dry gas and light hydrocarbons in existing refineries; The content of heavy components in the ethane-rich gas is low (C4+≯1.5mol%), and it is suitable to be directly used as the raw material of the gas cracking furnace of the ethylene cracker. |
| priorityDate | 2021-05-18^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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