合成尿素用新型CO_2原料气除氢催化剂的工业侧流试验  

Industrial Sidestream Test of a New Type Catalyst for Hydrogen Removal from CO_2 Feed Gas for Urea Synthesis

作　　者：白庭芳[1] 安立敦[1] 徐贤伦[1] 石国道 

机构地区：[1]中科院兰州化学物理研究所,中石化镇海炼油化工公司化肥厂

出　　处：《工业催化》1995年第3期21-29,共9页Industrial Catalysis

基　　金：中国石化总公司资助

摘　　要：Ｄ－４３８型合成尿素用ＣＯ２除氢催化剂，虽用铁部分取代贵金属钯作为其活性组份，其抗Ｈ２Ｓ和ＣＯ等毒物性能却得到明显改善。工业装置高压侧流２４００ｈ试验结果表明，采用与ＤＨ－２催化剂基本相同的操作条件，在ＣＯ２原料气中总硫、ＣＯ和甲醇等毒物含量分别平均增高３３％、～２倍和～３０％的情况下，其反应活性与ＤＨ－２相当，充分证明Ｄ－４３８催化剂在保持其较高除氢活性和稳定性的前提下，具有较ＤＨ－２和ＣＮ－１０１催化剂更好的抗硫化物中毒性能和耐ＣＯ含量波动的能力，是一种生产成本较低、抗干扰能力强、性能稳定的催化剂。目前，这一催化剂即将投入工业应用试验。D-438 (Pd-Fe/Al2O3) is a new type of catalyst for removal of hydrogen from carbon dioxide feed gas for urea synthesis. Partially replacing the noble metal by Fe element as active componant, the resistance of the catalyst to sulfur and CO impurities is obviously improved. The catalyst has been used in the similar operation conditions as DH-2 catalyst and CO2 feed gas with increased H2S, CO and CH3OH concentrations by 33%, 200% and 30%, respectively. The results of in-situ sidestream test for 2400 hours show that its catalytic activity is equipollent to DH-2 catalyst, with high hydrogen removing capacity,stability and much better resistance to sulfur poisoning and change of CO content than DH-2. The catalyst is going to be put into industrial use.

关 键 词：催化剂 二氧化碳 除氢 高压侧流试验 尿素 合成 

分 类 号：TQ441.41[化学工程—化学肥料工业]