多室环流反应器中模拟FCC干气制乙醛  

Synthesis of Acetaldehyde from Simulated FCC Dry Gas in a Multi-Component Airlift Loop Reactor

作　　者：刘永民[1] 袁乃驹[2] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]清华大学化工系,北京100084

出　　处：《石油化工》2005年第2期128-131,共4页Petrochemical Technology

基　　金：中国石油化工股份有限公司科技项目(x597005)

摘　　要：研究了在多室环流反应器(MALR)中用模拟催化裂化干气和空气制乙醛的过程,考察了MALR中气含率和液体循环速率与上升室表观气速之间关系的同时,还考察了反应温度、反应压力、原料气中乙烯含量及催化剂溶液中pd2+含量对乙烯单程转化率和乙醛选择性的影响.实验结果表明,MALR中气体流速在0.461～0.545 cm/s内气含率较大,液体循环速率仅在2.5～3.2 cm/s较窄的范围内变化;合成乙醛的最佳条件为:反应温度100～120℃、反应压力0.5～0.6MPa、催化剂溶液中Pd2+质量浓度0.6～0.9g/L.Synthesis process of acetaldehyde from simulated FCC dry gas (N2 and C2H4) and air in a multi-component airlift loop reactor (MALR) was proposed. Effects of reaction temperature, pressure, ethylene concentration in feed, and palladium ion (Pd2+) concentration in solution on ethylene conversion per pass and on selectivity of acetaldehyde were investigated. When gas velocity was 0.461-0.545 cm/s, gas holdup in MALR was high and at that time liquid circulating rate changed only within a narrow range 2.5-3.2 cm/s. Optimum reaction conditions for synthesis of acetaldehyde from simulated FCC dry gas were temperature 100-120°C, pressure 0.5-0.6 MPa and concentration of palladium ion (Pd2+) in solution 0.6-0.9 g/L.

关 键 词：乙醛 乙烯 催化裂化 干气 多室环流反应器 

分 类 号：TQ224.124[化学工程—有机化工]