http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109906213-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2529-65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00761 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2529-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00893 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-1827 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-0055 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2-865 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2-864 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C2-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C15-08 |
| filingDate | 2017-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109906213-B |
| titleOfInvention | Use of light gas by-products for the preparation of para-xylene by methylation of toluene and/or benzene |
| abstract | Process for the production of para-xylene by catalytic alkylation of benzene and/or toluene with methanol, which produces xylene isomers along with water and some light organic by-products, especially dimethyl ether and C4- Para-rich mixture of olefins. The C4 -olefin-containing tail gas stream can be recycled back to the reaction for co-injection with methanol to reduce methanol autolysis and methanol-to-olefin reactions, or to fluidize catalyst particles recovered through the reactor cyclone. By using recycled tail gas instead of water or steam, the detrimental effects of water and/or steam on catalyst aging and activity rates can be reduced and the size of downstream equipment necessary to recover olefin by-products can be reduced. |
| priorityDate | 2016-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 159.