摘要
以盘锦乙烯工业公司提供的石脑油为原料 ,在实验室小型连续管式裂解炉上 ,对石脑油不同温度的结焦规律进行了实验测试、DMDS(二甲基二硫 )或FPA -15 1存在下石脑油裂解结焦的性能进行了实验对比 ,考察了裂解温度对结焦速率的影响及结焦抑制剂的抑焦性能。实验均在常压 ,10 73～ 1113K温度条件下进行。并以水蒸气作为惰性稀释剂 ,稀释比为 0 .5 ,且保持恒定。结果表明 :在石脑油中分别加入 10 0 μg·g- 1 的FPA -15 1或DMDS均能有效的抑制结焦 ,但二甲基二硫抑焦性能一般 ,具有强裂刺激性臭味 ,操作环境差。而FPA -15 1作为一种新型结焦抑制剂其功能完善 ,抑制结焦的效果优于DMDS ;同时在石脑油中加入FPA -15 1可提高乙烯收率 ,这方面的实验尚在进行中。因此FPA -15 1更符合工业上对结焦抑制剂的要求———抑焦效果好 ,功能完备 ,廉价、无毒、无腐蚀、无污染 ,便于在工业装置上推广应用。温度是影响结焦最重要因素之一 ,无论是空白实验还是在原料中加入结焦抑制剂 。
With equipment specially designed and assembled for studying coke deposition in pyrolysis of hydrocarbons, naphtha produced by Panjin ethylene industrial company as feedstock, the law of coke deposition during naphtha pyrolysis was studied at different temperature, and compared experimentally to coke properties of naphtha wherein DMDS (dimenthyl disulfied) or FPA-151 was added, moreover, the effects of pyrolysis temperature on the rate of coke formation and the coke inhibitor’s anti-coking performance were investigated. The experiment was made at normal pressure and the temperature of 1 073～1 113 K, in experiment.Steam was used as inert diluent, with dilution ratio being 0.5 and kept constant. The results show that adding respectively 100 μg·g -1 FPA-151 or DMDS into naphtha can effectively inhibit coke formation, but DMDS’s anti-coking performance is not excellent, and it has intensive irritating smell, operating environment being bad. FPA-151, as a new kind of coke inhibitor, has excellent anti-coking performance, it’s anti-coking performance is better than DMDS’s; simultaneously, adding FPA-151 into naphtha can increase the yields of ethylene. Accordingly, FPA-151 can satisfy the request for industry much better-execllent anti-coking performance, perfect function, low price, no toxicity, no corrosion, no pollution and easily being generalized to use into commercial plant. The temperature is one of the important factors that affect coking, whatever the blank test or the test added coke inhibitor into feedstock, the rate of coke formation increases with the temperature rising.
出处
《石油化工高等学校学报》
EI
CAS
2000年第2期29-31,共3页
Journal of Petrochemical Universities
基金
辽宁省重点攻关技术项目! (K960 0 5 )
