以炼厂FCC裂解气（混合C₄）为原料，对磺酸树脂DH-2催化剂催化C₄烯烃选择性叠合进行工艺条件等方面的评价。结果表明，反应温度降低、空速增大和催化剂酸量降低均导致异丁烯和1-丁烯转化率下降，C₈烯烃（C₈⁼）选择性升高，C₈⁼中三甲基戊烯（TMP⁼）的质量分数增多，二甲基己烯（DMH⁼）的质量分数减少。另外，添加乙醇抑制剂可大大降低1-丁烯转化率，提高C₈⁼选择性，在50℃、2 h^-1、乙醇与异丁烯物质的量比（简称醇烯物质的量比）为50%的条件下，异丁烯转化率为75.63%，1-丁烯转化率为6.48%，C₈⁼选择性为88.64%。

Sulfonic acid resin-based catalyst DH-2 is evaluated in the selective dimerization of C₄ olefins with refinery FCC cracking gas (mixed C₄) as raw materials.The results show that the conversion rates of both isobutylene and 1-butene will decrease and the selectivity of C₈ olefin (C₈⁼) will increase when the reaction temperature decreases,the space velocity increases or the acid amount of catalyst decreases.But the content of trimethylpentane (TMP⁼) in C₈⁼ will increase and the content of dimethyl hexene (DMH⁼) will decrease.In addition,the addition of ethanol as an inhibitor can greatly reduce the conversion of 1-butene and increase the selectivity of C₈⁼.The conversion rates of isobutene and 1-butene will reach 75.63% and 6.48% respectively,and the selectivity of C₈⁼ will be 88.64% when the reaction temperature is set at 50℃,the space velocity is 2 h^-1 and the feeding ratio of ethanol to isobutene is 0.5:1.

葛跃娜(1995-),女,硕士研究生,研究方向为酸催化合成高辛烷值汽油添加组分的工艺,674265996@qq.com