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    METHOD AND SYSTEM FOR DIRECTLY CRACKING CRUDE OIL TO PREPARE OLEFIN
    3.
    发明公开
    METHOD AND SYSTEM FOR DIRECTLY CRACKING CRUDE OIL TO PREPARE OLEFIN 审中-公开

    公开(公告)号：EP4053248A1

    公开(公告)日：2022-09-07

    申请号：EP20881277.6

    申请日：2020-10-28

    申请人： CHINA PETROLEUM & CHEMICAL CORPORATION ,  BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION

    发明人： LIU, Tongju ,  WANG, Guoqing ,  ZHANG, Lijun ,  ZHANG, Zhaobin ,  ZHOU, Cong ,  JIANG, Bing ,  SHI, Ying

    IPC分类号： C10G9/14 ,  C10G55/00

    摘要： The present invention relates to a method and system for cracking crude oil. The method comprises: delivering the crude oil to a first tube group of a convection section of a cracking furnace for preheating and then performing vaporization to obtain a first gas phase and a first liquid phase; performing high-pressure extraction on the first liquid phase to obtain a non-asphalt oil and an asphalt; and mixing the first gas phase and the non-asphalt oil with water vapor respectively, or mixing the first gas phase with the non-asphalt oil prior to mixing with water vapor, then delivering the same to a second tube group of the convection section of the cracking furnace for heating, followed by delivering same to a radiation section of the cracking furnace for cracking to obtain a cracked product, and separating the cracked product to obtain low-carbon olefins. In the present invention, after the crude oil is preheated in a cracking furnace and vaporized, the obtained gas phase is passed into the cracking furnace, and the obtained liquid phase is passed through a supercritical extraction unit to separate an extract oil, which is then passed into the cracking furnace The method can effectively improve cracking efficiency of the crude oil, improve the yield of low-carbon olefins in the product, extend the operating cycle, and reduce coking of a gasified crude oil mixture in a cracking process.

    A method of producing ethylene by using refinery C4
    8.
    发明公开
    A method of producing ethylene by using refinery C4 有权
    使用C4馏分从精制用于生产乙烯的方法

    公开(公告)号：EP2189436A1

    公开(公告)日：2010-05-26

    申请号：EP09177028.9

    申请日：2009-11-25

    申请人： Petrochina Company Limited

    发明人： He, Defu ,  Wang, Sihan ,  Zhang, Baojun ,  Qu, Jiabo ,  Zhang, Yongjun ,  Meng, Rui ,  Wan, Shubao ,  Wang, Shulan ,  Zhang, Jingyuan ,  Zhao, Xiwu ,  Guan, Weihong ,  Feng, Yingjie ,  Liu, Shuqing ,  Yu, Xiangmin ,  Ren, Hongbo ,  Guo, Yingzi ,  Zhao, Jingying ,  He, Chunfeng

    IPC分类号： C07C4/04 ,  C07C11/04 ,  C10G9/14

    CPC分类号： C10G9/36 ,  C07C4/04 ,  C07C11/04

    摘要： A method of producing ethylene by using refinery C4 comprising: a refinery C4 as a first raw material which comprises 45%-55% isobutane, 5%-10% n-butane, 15%-20% isobutene, 10%-15% 1-butylene and 5%-10% 2-butylene based on the total weight percentage of the refinery C4, the weight average molecular weight thereof being 55-60, an alkane-rich light hydrocarbon as a second raw material which comprises 40%-50% linear alkane, 25%-35% branched alkane, 15%-25% cyclane, less than or equal to 1% alkene and less than or equal to 10% arene based on the total weight percentage of the alkane-rich light hydrocarbon, the weight average molecular weight thereof being 90-100; the refinery C4 being in amount of about 10% to about 30% of the total weight percentage of the refinery C4 and alkane-rich light hydrocarbon; introducing the mixture of said first raw material and said second raw material into the upper part of the convection section of a cracking furnace, after diluted with steam, passing the diluted mixture through the lower part of the convection section to enter into the radiation section of said cracking furnace, distributing the diluted mixture to manifolds to carry out copyrolysis reaction therein so as to produce ethylene, wherein the cracking temperature is about 840°C to about 860°C, and the dilution ratio of steam/total raw materials is about 0.30 to about 0.60 wt/wt. According to the method provided in the present invention, the yield of ethylene attributed to the refinery C4 of the total raw materials can be greatly increased as compared with the separate cracking of refinery C4, while the cracking performance of light hydrocarbon can be maintained. In this way, the use value of refinery C4 and also other C4-rich products can be effectively improved, thus notable economic bendfits can be brought to the oil refinery.

    摘要翻译： 通过使用炼油厂C4包括产生乙烯的方法，包括：一个炼油厂C4作为第一原料，其包含45％-55％的异丁烷，5％-10％的正丁烷，15％-20％的异丁烯，10％-15％1 丁烯和5％-10％，基于炼油厂C4，重均分子量为它们55-60到富链烷烃的轻质烃作为第二原料，其包含40％的总重量百分比2 - 丁烯-50 ％的直链烷烃，25％-35％支链烷烃，15％-25％环烷烃，基于该富含烷烃的轻质烃的总重量百分比小于或等于1％烯烃和小于或等于10％芳烃， 重均分子量为90〜100其正在; 炼油厂C4中的约10％量为炼油厂C4和富含烷烃的轻质烃的总重量百分比的30％左右; 将所述第一剃刀和所述第二原料放入一个裂解炉的对流段的上部的混合物中，用蒸汽稀释之后，通过对流段的下部使稀释混合物进入的辐射部 所述裂解炉，分发稀释混合物至歧管进行copyrolysis反应在其中以便生产乙烯，worin裂化温度为约840℃至约860℃，并且蒸汽/原料总量稀释比为约0.30 至约0.60重量/重量。 。根据本发明提供的方法，乙烯的产率归因于炼油厂的总原料的C4可以大大增加，与炼油厂C4的单独的裂化相比，同时能够维持轻质烃的裂化性能。 通过这种方式，炼厂C4的使用价值，因此等丰富C4的产品可以有效地提高，从而显着的经济bendfits可以带到炼油厂。