油溶性铁镍催化剂在煤/重油加氢共炼中的应用  

Study on Oil-soluble Iron-nickel Composite Catalyst in Coal/heavy Oil Co-processing

作　　者：邓文安[1] 孟环爽 杨腾飞[1] 秦勇[1] 黄英[1] 李娟[1] 李传[1] 

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,山东青岛博士教授266580

出　　处：《煤炭转化》2017年第6期21-26,33,共7页Coal Conversion

基　　金：国家自然科学基金青年基金资助项目(21106186);山东省重点研发计划项目(2015GGX107014)

摘　　要：以褐煤A为原料煤,以马瑞常压渣油为原料油,采用实验室合成的油溶性铁镍复合催化剂在高压釜中模拟煤/重油浆态床加氢共炼反应进行活性评价.采用XRD,SEM和TEM等表征手段分析催化剂的硫化产物及煤/重油加氢共炼体系产生的固体残渣,探究该复合催化剂与单金属催化剂之间产生活性差异的原因.结果表明:相比于油溶性单金属铁、油溶性单金属镍催化剂,油溶性铁镍复合催化剂具有更高的干基无灰煤转化率,可达87.37%.油溶性铁镍复合催化剂的硫化产物结晶度低,颗粒表面粗糙,分散度高,不仅存在铁、镍的单金属硫化物,而且形成了铁镍混晶的硫化物(Fe-Ni-S混晶).油溶性铁镍复合催化剂作用下得到的固体残渣,粒径小,结构松散,芳香度低,进一步证实油溶性铁镍复合催化剂促进了煤的深度转化.A kind of lignite A and atmospheric residue from Merey were chosen as raw materials.The reaction activity of the synthesized oil-soluble iron-nickel composite catalyst in the lab were evaluated during the coal/heavy oil co-processing in a autoclave.The catalysts＇ sulfides and the solid residues after the co-processing were analyzed by XRD,SEM and TEM,to explain the activity difference among the composite catalyst and the single metal catalysts.Results show that the oil-soluble iron-nickel catalyst has a higher coal conversion of 87.37%,compared with the oil-soluble single metal catalysts of iron and nickel.The sulfide of the iron-nickel composite catalyst has low crystallinity and coarse surface,forming not only the individual metal sulfides but also the iron-nickel mixed crystal sulfide（Fe-Ni-S mixed crystal）.The solid residue obtained from the iron-nickel composite catalyst exhibits small particle size,loose structure,and low degree of aromaticity,which further prove the promotion for the deep conversion of coal.

关 键 词：煤/重油共炼 油溶性铁镍复合催化剂 硫化产物 干基无灰煤转化率 固体残渣 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]