http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4790930-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_50907fc1b392e2bf592f74fb8123032d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G67-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10G67-04 |
| filingDate | 1987-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1988-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e6ee559166f714ec3a3351324668ba12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6536c789e18ea04fcf3d3fb957c58db5 |
| publicationDate | 1988-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4790930-A |
| titleOfInvention | Two-step heterocyclic nitrogen extraction from petroleum oils |
| abstract | A process is disclosed for the removal of basic heterocyclic nitrogen compounds from a petroleum crude oil or fraction thereof which comprises first treating the petroleum crude oil or fraction thereof rich in basic heterocyclic nitrogen compounds in a two-phase extraction zone with an extractant consisting essentially of an aqueous solution of a lower carboxylic acid, preferably having between 1 and 15 carbon atoms. The extractant complexes the basic heterocyclic nitrogen compounds to produce a stream of petroleum crude oil or fraction thereof having a smaller content of heterocyclic nitrogen compounds and a stream comprising the lower carboxylic acid extractant with an increased quantity of basic heterocyclic nitrogen compounds. The petroleum crude oil or fraction thereof possessing a reduced quantity of heterocyclic nitrogen compounds is hydrotreated in the presence of hydrogen and a hydrotreating catalyst to further remove the basic heterocyclic nitrogen compounds. The extractant stream is treated in an extractant separation zone to renovate the extractant for recycle to the two-phase extractant zone, substantially free of removed basic heterocyclic nitrogen compounds. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6875341-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0071494-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101243161-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009500472-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007000809-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4985139-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4960507-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007005298-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1325609-C http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7727383-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007005298-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101310987-B1 |
| priorityDate | 1987-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 107.