发明名称 |
Method and device for steam cracking comprising the injection of particles upstream of a secondary quenching exchanger |
摘要 |
A steam-cracking process includes the injection, at at least one point upstream from a secondary quenching indirect exchanger (4b), of particles with a mean size of between 0.02 and 4 mm, at a velocity speed in the exchanger of 20 to 180 m/s, in sufficient quantity to limit the rise in the output temperature of the effluents from the exchanger to a value that is less than 100° C. per month. At least 70% by weight of the quantity of injected particles is introduced downstream from primary quenching exchangers (4a) and upstream from the inlet to the secondary quenching exchanger. At intervals, decoking of the pyrolysis pipes and primary quenching exchangers is carried out in the presence of air.
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申请公布号 |
US6183626(B1) |
申请公布日期 |
2001.02.06 |
申请号 |
US19990202925 |
申请日期 |
1999.03.12 |
申请人 |
INSTITUTE FRANCAIS DU PETROLE |
发明人 |
LENGLET ERIC;BURZYNSKI JEAN-PIERRE;COURTEHEUSE GéRARD;HUIN ROLAND;GOUGNE YVES |
分类号 |
C10G9/00;C10G9/16;C10G9/20;C10G9/28;C10G9/36;F28G1/12;(IPC1-7):C10G9/12 |
主分类号 |
C10G9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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