Process for treating hydrocarbons to produce light olefins in countercurrent catalytic cracking reactor

• Main Authors: AL-MAJNOUNI KHALID A, OSORIO ISIDORO MORALES, ALMASRI ABDULRAHMAN FARRUKH, ALI OLA S, AL-REFAI AHMED, AL-DAOUS MOHAMMED ABDULMAJEED
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

Light olefins may be produced from hydrocarbons by a process that includes passing a hydrocarbon feed stream into a feed inlet of a reactor. The reactor may include an upper reactor portion defining an upper reaction zone and a lower reactor portion defining a lower reaction zone. The catalyst is moved in a substantially downward direction through the upper reactor portion and the lower reactor portion, and the hydrocarbon feed stream is moved in a substantially upward direction through the upper reactor portion and the lower reactor portion, thereby moving the hydrocarbon feed stream and the catalyst in a counter-current direction. Contacting the catalyst with the hydrocarbon feed stream may cleave one or more components of the hydrocarbon feed stream and form a hydrocarbon product stream. The process may further include leaving the hydrocarbon product stream through a hydrocarbon product outlet from the upper reaction zone. 轻质烯烃可通过包括使烃进料流进入反应器的进料入口的方法由烃生产。反应器可包括限定上部反应区的上部反应器部分和限定下部反应区的下部反应器部分。催化剂以基本上向下的方向移动