| 摘要 |
A downflow catalytic cracking reactor, comprising the following components: catalyst delivery pipe ( 1 ), reactor top cover ( 2 ), feed nozzle ( 3 ), reactor vessel ( 6 ), downflow reaction pipe ( 9 ), the upper end of the outer body is close connected to top cover ( 2 ) along the direction of circumference; the bottom of the outer wall body is close connected to the outer wall of the downflow reaction pipe; the upper section of the downflow reaction pipe is located inside the reaction vessel, while the lower section extends from the bottom of the outer body; feed nozzle ( 3 ) is located on the top cover ( 2 ) and/or side wall of the reactor vessel ( 6 ) with the outlet of the feed nozzle being above the inlet of the downflow reaction pipe; catalyst delivery pipe ( 1 ) is fixedly joined to the reactor vessel and in communication with catalyst lifting zone ( 7 ) formed by the reaction vessel and the downflow reaction pipe. |
