Wang F.,Shenhua Ningxia Coal Industry Group Company Ltd |
Ren L.,Shenhua Ningxia Coal Industry Group Company Ltd |
Yong X.,Shenhua Ningxia Coal Industry Group Company Ltd |
Luo C.,Shenhua Ningxia Coal Industry Group Company Ltd |
Gong Y.,China University of Petroleum - Beijing
Huaxue Fanying Gongcheng Yu Gongyi/Chemical Reaction Engineering and Technology | Year: 2015
In order to broaden raw materials for ethylene cracking process and reasonably use by-product gasoline resource from methanol to propylene (MTP) technology, the composition of Lurgi MTP gasoline was analyzed in detail. A fixed bed reactor was used to investigate the performance of catalytic cracking of a light fraction with a temperature range of IBP-99℃ to light olefins over ZSM-5 catalyst. The results showed that the composition of MTP gasoline present here was characterized by a high content of aromatics and a low content of alkanes, mainly carbon number distribution of C6-C9. Xylene in aromatic group was main composition, with a content of 22.89 %, followed by trimethylbenzene, especially 1,2,4-trimethylbenzene (1,2,4-TMB) with a content of 8.07 %. The composition of MTP gasoline was different from that of traditional gasoline from petroleum. A solution was proposed for the grading utilization of the MTP gasoline. At the reaction conditions of 600℃, the maximum propylene yield of the IBP-99℃ fraction was up to 30.59%, higher than ethylene yield by 5.82%.At the reaction conditions of 625℃, the maximum ethylene yield of the IBP-99℃ fraction was up to 31.5%, higher than the propylene yield by 6.13%. The total amount of ethylene and propylene achieved 56.87% at 625℃. These results indicate that the light fraction in the MTP gasoline is a good raw material to produce low carbon olefins by catalytic cracking process. ©, 2015, Zhejiang University. All right reserved.