防老剂688连续合成工艺的研究  

Study on the continuous synthesis of antioxidant 688

作　　者：陶建青 TAO Jianqing(SINOPEC Nanjing Research Institute of Chemical Industry Co.,Ltd.,Nanjing 210048,China)

机构地区：[1]中石化南京化工研究院有限公司,江苏南京210048

出　　处：《能源化工》2018年第3期27-30,共4页Energy Chemical Industry

摘　　要：为改进合成防老剂688的间歇工艺,提高生产效率,进行了连续化合成防老剂688的研究。以RT培司和2-辛酮及氢气为原料,NCH4-2为催化剂,在固定床上连续合成了防老剂688。考察了反应温度、反应压力、液体空速对反应转化率、防老剂688的选择性和收率的影响,结果表明:在2-辛酮与RT培司摩尔比5∶1、反应温度185℃、反应压力1. 10 MPa、液体空速0. 17 h^(-1)、氢油比400的工艺条件下,RT培司的转化率98. 31%,防老剂688的选择性98. 86%,反应收率可达97. 19%。与间歇法工艺相比,固定床连续合成工艺具有反应压力低、产品收率高的优势。In order to improve the batch process of synthesizing antioxidant 688, and increase the productivily, the continuous synthesis of antioxidant 688 is studied. The antioxidant 688 is synthesized in a fixed bed using 4-aminodiphenylanline and 2-oetanone and hydrogen as raw materials and NCH4-2 as catalyst. The effects of reaction temperature, reaction pressure and LHSV on reaction conversion rate, selectivity and yield of antioxidant 688 are investigated. The results show that the conversion rate of 4- aminodiphenylamine is 98.31% , the selectivity of antioxidant 688 is 98.86% , and the yield is 97.19% under the conditions of 2- oetanone and 4-aminodiphenylanline mole ratio 5： 1, reaction temperature 185 -C, reaction pressure 1.10 MPa, LHSV 0.17 h 1 , and hydrogen oil ratio 400. Comparing with the batch process, the fixed bed continuous synthesis of antioxidant 688 has advantages of low reaction pressure and high product yield.

关 键 词：RT培司 2-辛酮 缩合加氢 固定床 连续法 防老剂688 

分 类 号：TQ330.382[化学工程—橡胶工业]