公开(公告)号：US4487686A

公开(公告)日：1984-12-11

申请号：US583182

申请日：1984-02-24

申请人： Shimpei Gomi ,  Tomio Arai ,  Tomomitsu Takeuchi ,  Shigeru Miwa ,  Toru Takatsuka ,  Ryuzo Watari

发明人： Shimpei Gomi ,  Tomio Arai ,  Tomomitsu Takeuchi ,  Shigeru Miwa ,  Toru Takatsuka ,  Ryuzo Watari

IPC分类号： C10G51/02 ,  C10G9/16 ,  C10G9/14

CPC分类号： C10G51/023

摘要： A heavy hydrocarbon feed stock is, after being heat-treated in a first cracking zone, is introduced into a second thermal cracking zone for obtaining a thermally cracked product and a pitch product. The second cracking zone has a plurality of cracking reactors which are connected in series, through which is successively passed the treated feed stock and to each of which is supplied a gaseous heat transfer medium to maintain the liquid phase therein at a temperature sufficient for effecting the thermal cracking and to strip the resulting distillable, cracked components from the liquid phase. The thermal cracking temperature in one reactor is so controlled as to become higher than that in its adjacent upstream-side reactor. The distillable, cracked components in respective reactors are removed overhead therefrom and separated into a heavy fraction and a light fraction, while the liquid phase in the downstream-end reactor is discharged therefrom for recovery as the pitch product. The light fraction is recovered as a light product oil, while the heavy fraction is fed to a third thermal cracking zone for obtaining a tar-containing product which is recycled to at least one of the reactors of the second thermal cracking zone together with a naphthene base heavy hydrocarbon oil.

摘要翻译： 在第一裂解区热处理后，将重质烃原料引入第二热裂解区以获得热裂化产物和沥青产物。 第二裂解区具有多个串联连接的裂解反应器，通过该裂化反应器依次通过处理过的原料，并将其中的每一个供应气态传热介质，使其中的液相保持在足以实现 热裂解并从液相中剥离得到的可馏出的裂化组分。 一个反应器中的热裂解温度被控制得高于其相邻的上游侧反应器中的热裂解温度。 各反应器中的可蒸馏的裂化组分在其上从其上除去并分离成重馏分和轻馏分，而下游反应器中的液相从其排出，作为沥青产物进行回收。 将轻馏分作为轻质产物油回收，同时将重质馏分进料至第三热裂解区，以获得含焦油的产物，其与第二热裂解区的至少一个反应器一起再循环至环烷烃 基础重烃油。