公开(公告)号：US09434892B2

公开(公告)日：2016-09-06

申请号：US13808835

申请日：2011-07-04

申请人： Ponoly Ramachandran Pradeep ,  Sadhullah Mukthiyar ,  Gadari Saidulu ,  Debasis Bhattacharyya ,  Vetterkunnel Kumaran Satheesh

发明人： Ponoly Ramachandran Pradeep ,  Sadhullah Mukthiyar ,  Gadari Saidulu ,  Debasis Bhattacharyya ,  Vetterkunnel Kumaran Satheesh

IPC分类号： C10G51/00 ,  C10G51/02 ,  C10G11/18

CPC分类号： C10G51/026 ,  C10G11/18 ,  C10G2300/207 ,  C10G2300/301 ,  C10G2300/4093 ,  C10G2300/807 ,  C10G2400/02 ,  C10G2400/20

摘要： A two stage Fluid Catalytic Cracking process and an apparatus for simultaneous production of light olefins such as ethylene and propylene and middle distillate range hydrocarbons, wherein a first flow reactor, preferably a downer and a second flow reactor, preferably a riser are operating at varying reaction severities using different catalyst systems with the regenerated catalyst entering the reactors inlet through independent regenerators. Mild cracking of the fresh feedstock is carried out in the first flow reactor of short residence time and the effluent of first flow reactor is separated in an intermediate separator/fractionator followed by re-cracking of the C4 hydrocarbons and naphtha range hydrocarbons, preferably C5-150° C. from the second product separation section and unconverted hydrocarbons (370° C.+) of first flow reactor, in the second flow reactor at higher severity employing different catalyst system.

摘要翻译： 两级流体催化裂化方法和用于同时生产轻质烯烃如乙烯和丙烯以及中间馏分烃类的装置，其中第一流动反应器，优选下流式和第二流动反应器，优选提升管以变化的反应 使用不同催化剂体系的严重性，再生催化剂通过独立的再生器进入反应器入口。 新鲜原料的轻度裂化在短停留时间的第一流化反应器中进行，第一流动反应器的流出物在中间分离器/分馏器中分离，随后重新开裂C4烃和石脑油烃，优选C5- 在第二流动反应器中，来自第二产物分离段的150℃和未转化的烃（370℃+），在第二流动反应器中采用不同的催化剂体系。