CO+H_2合成高辛烷值汽油和均四甲苯  

GASOLINE AND DURENE FROM SYNGAS

作　　者：郭志英[1] 亢茂青[1] 谭猗生[1] 任兆鑫[1] 陆大勋[1] 付聪忍[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《燃料化学学报》1991年第4期320-326,共7页Journal of Fuel Chemistry and Technology

摘　　要：研制出CO+H_2一段合成甲醇和二甲醚和二段合成汽油并联产均四甲苯的两段催化剂。一段为铜基复合型催化剂,二段为HZSM-5催化剂。在5ml连续流动式加压两段固定床单程反应装置上考察了反应条件对催化剂活性、选择性的影响。在H。2/CO=2、空速1100h^(-1)、压力4MPa、一段270℃、二段330℃的条件下进行了催化剂稳定性试验,连续运转了2000小时。结果为CO转化率90%以上,C_5^+得率106—110g/Nm^3(CO+H_2),C_5^+占总烃的83w%,C_5^+中均四甲苯占20—22w%,C_6—C_9芳烃为21—23w%,异构烷烃45—46w%,烯烃<2w%,C_(11)^+<1w%。C_5^+时空产率为0.12g/h·mlcat。2000小时一段催化剂结炭1.15w%,二段为7.87w%。Bench scale tests were carried out in an integrated two stage flow system for the production of gasoline and durene from syngas.For the first stage,4 catalysts based on Cu were tested.Three HZSM-5 samples were tested at the 2nd stage.The two stages were isobaric but different in temperature.The syngas used had a H_2/CO ratio of 2,and was generated by methanol decomposition.Effects of temperature,pressure and SV on the performance of the catalysts were evaluated without recycling.Carbon monoxide conversion at the 1st stage attained 84.4% for a sample coded CMD-1,and 90% for the other three,at 270℃,3 MPa and SV 1300h^(-1),being comparable to literature data.Higher temperature and SV are not recommended,while higher pressure is favorable.For the 2nd stage,seleetivity to hydrocarbons is about 83%,and the optimum temperature is 330—340℃.A long term test which lasted for 2000h hase been run at 270℃ for the 1st stage,330℃ for the 2nd stage,4MPa,and SV 1100h^(-1),without appreciable deterioration of catalysts at both stages.The average result areL:CO conversion above 90%,C_5^+ yield 106-110g/Nm^3 syngas,which is 83% of the total hydrocarbon yield and corresponds to a space-time yield of 0.12g/h/ml catalyst.Important components of the C_5^+ fraction are:durene 20-22%,C_6-C_9 aromatics 21-23%,iso-alkanes 45-46%,olefins less than 2% and C_(11)^+ less than 1%.After the separation of durene,which is a high priced chemical in short supply on the present Chinese market,the remainder is a high octane number gasoline with good stability

关 键 词：汽油 均四甲苯 一氧化碳 氢气 合成 

分 类 号：TQ517.43[化学工程]