| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_28735f3638fd2f642725ec835bdf9290
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3ab36f234847b18fd5471481b95743a7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_89a84ca2c48570148c32b022242e632e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_953e999ec3d2163642f8236ffb07525e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7fa32c1e7c0aa53cd2ea6f82a89fc514
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f65efcec44e75d2f4822ffb43eec3b61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_827cb2835dce88186c45ff37916c8e26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cd1337de29706695dfdf61c32d4b62a2 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-573 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-60 |
| filingDate |
2009-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1830458500d117e3016d94516d2015f3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2640a2f29bbb4c6b9b1a874a46ed64f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80ed5e40ef2198e096a42bea7c9a7c33
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e115a8fdbb0843f43f27fd9e00b82edc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a9083e0f7415d69aff652a716172fa0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74f46d3f1538e3da77e30ed79c9080ce
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89032e14427d79f16e7579e9c6f75fcc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_db615380e1202c68ba775c1e8e91d5ae |
| publicationDate |
2009-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2009121735-A1 |
| titleOfInvention |
Process for separating off fumaric acid and other minor components during the production of maleic anhydride |
| abstract |
Process for decreasing fumaric acid deposits during the production of maleic anhydride by heterogeneous catalytic oxidation of a hydrocarbon with molecular oxygen in which the maleic anhydride is absorbed from the crude product mixture in an absorbent in an absorption column and desorbed again in a desorption column, wherein the total amount or a subquantity of the maleic anhydride-depleted absorbent, for targeted precipitation of the fumaric acid, is cooled and/or concentrated by vaporizing a part of the absorbent until the difference between the concentration of fumaric acid in the recycle stream at the outlet of the desorption column, under the conditions prevailing there and the equilibrium concentration of fumaric acid according to the solubility curve after the cooling and/or evaporation of a part of the absorbent is greater than or equal to 250 ppm by weight and the fumaric acid which is precipitated out as solid is removed in whole or in part from the absorbent recycle and the fumaric acid-depleted absorbent is recycled in whole or in part to the absorption column. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104557816-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012081043-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8901321-B2 |
| priorityDate |
2008-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |