http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109069992-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-2045 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-2047 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2253-106 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2253-102 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02C20-30 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-389 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B7-0725 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B7-0706 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-685 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-70 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B7-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-70 |
| filingDate | 2017-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109069992-B |
| titleOfInvention | Hydrochloric acid purification method and apparatus |
| abstract | The invention relates to a method for treating a gas stream containing hydrochloric acid, hydrofluoric acid, a fluorinated compound of interest and a halogenated organic compound, wherein the gas stream is subjected successively to: (a) a step of washing with an acid solution to obtain a washed gas stream; (b) a step of adiabatic absorption in aqueous solution of the hydrochloric acid contained in said scrubbed gas stream, so that the hydrochloric acid solution can be collected; (c) an adsorption step on activated carbon of organic impurities present in the hydrochloric acid solution, to obtain a purified hydrochloric acid solution and a gas stream containing the fluorinated compound of interest; and (d) a step of contacting the purified hydrochloric acid solution with silica gel. Also relates to an apparatus for carrying out the method, and to a method for preparing a fluorinated compound, comprising: -catalytic pyrolysis of an organofluorine compound comprising at least one chlorine atom or catalytic fluorination of an organochlorine compound with hydrofluoric acid, collecting a crude gas stream containing hydrochloric acid, hydrofluoric acid, said fluorinated compound of interest and an organic compound, and-treating said crude gas stream according to the above-mentioned process. |
| priorityDate | 2016-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 75.