2-丁烯原料中硫、氯、氧和丁二烯杂质的脱除

采用活性氧化铝和氧化锌脱除煤基2-丁烯原料中的硫和氯杂质，采用载铜活性炭脱除氧，选择性催化加氢脱除微量氧和1，3-丁二烯，并对净化后的煤基2-丁烯原料进行铑/双亚膦酸酯均相催化氢甲酰化反应的工业侧线评价。结果表明，在20℃、液相空速900 g/（h·L）的条件下脱除硫、氯、氧杂质，其含量均未检出；在40℃、液相空速2 100 g/（h·L）、氢气与1，3-丁二烯的物质的量比为1.05的条件下脱除1，3-丁二烯，其含量也未检出。在161 h的工业侧线评价试验期间，戊醛收率平稳保持在85.1%左右，正戊醛和异戊醛的物质的量比一直高于15.0，表明该均相催化剂具有良好的催化性能和稳定性，2-丁烯原料经净化后并未使该均相催化剂中毒失活。

The removal of sulfur,chlorine,oxygen and butadiene impurities in crude 2-butene

The sulfur and chlorine impurities in coal-derived crude 2-butene have been removed by activated alumina and zinc oxide, and the oxygen removed by copper-loaded activated carbon. The remaining traces of oxygen and 1,3-butadiene were removed using selective catalytic hydrogenation. Industrial side-stream evaluation of rhodium/diphosphite homogeneous catalytic hydroformylation of purified coal-derived 2-butene was carried out. The results showed that when the removal of sulfur, chlorine and oxygen impurities were carried out at 20 ℃ with a liquid phase space velocity of 900 g/(h·L), the remaining amounts were below the detection limit. When the removal of 1,3-butadiene was carried out at 40 ℃, with a liquid phase space velocity of 2 100 g/(h·L), and a hydrogen to 1,3-butadiene ratio of 1.05, the remaining amount was also below the detection limit. During an industrial side-stream evaluation test for 161 h, the yield of valeraldehyde remained stable at about 85.1%, and the product ratio of n-valeraldehyde to iso-valeraldehyde was always higher than 15.0, indicating that the homogeneous catalyst has good catalytic performance and stability, and is not poisoned or deactivated by 2-butene after purification.