催化剂对煤直接液化残渣气化反应性的影响  

Catalyst Affected to Residue Gasification Reactivity of Direct Coal Liquefaction

作　　者：赵丽红[1] 楚希杰[1] 

机构地区：[1]洛阳理工学院环境工程与化学系,河南洛阳471023

出　　处：《煤炭科学技术》2011年第9期125-128,共4页Coal Science and Technology

摘　　要：通过对神华煤液化催化剂的XRD分析以及催化剂对残渣气化反应影响的研究,发现液化残渣催化剂的存在形态为磁硫铁矿;经过热解制焦后,催化剂残留的主要形态是磁黄铁矿。对脱除矿物质和添加液化催化剂的残渣半焦进行水蒸气和CO2气化,在水蒸气气化反应过程中,催化剂对残渣半焦的气化反应性影响不大,这主要是由于水蒸气气化反应过程中生成了较多的H2S气体,使催化剂中铁元素的催化作用受到了抑制,降低了残渣在水蒸气气化反应中的气化反应性;在CO2气化反应过程中,由于产生的含硫气体比较少,催化剂中铁元素对残渣半焦的CO2气化起到了一定的催化作用。With the XRD analysis on the catalyst of Shenhua coal liquefaction and the study on the catalyst affected to the residue gasification reactivity,the melnikovite was found as the main formation of the liquefaction residue catalyst.After the pyrolysis coking process,the pyrrhotite was the main form of the catalyst residual.The steaming and CO2 gasification was conducted on the extracted mineral substances and residual semi coke with the liquefaction catalyst added.During the reaction process of the steam gasification,the catalyst would have less influence to gasification reaction of the residual semi coke.This was because great H2S gas were generated during the steam gasification reaction process,the catalyst effect of the iron element in the catalyst was restrained and the gasification reaction of the residual in the steam gasification reaction process was reduced.During the CO2 gasification reaction process,due to less sulfur content gas generated,the iron element in the catalyst would have certain catalyst effect to CO2 gasification of the semi-coke.

关 键 词：直接液化残渣 液化催化剂 变迁规律 气化反应性 

分 类 号：TQ536[化学工程—煤化学工程]