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1. 发明公开

EP3155072A1 PROCESS FOR PRODUCING BENZENE FROM A C5-C12 HYDROCARBON MIXTURE 有权转让
标题翻译： VERFAHREN ZUR HERSTELLUNG冯BENZOL AUS EINEM C5-C12-KOHLENWASSERSTOFFGEMISCH
公开(公告)号：EP3155072A1
公开(公告)日：2017-04-19
申请号：EP15725059.8
申请日：2015-06-01
申请人： SABIC Global Technologies B.V.
发明人： FICKEL, Dustin , HALL, Stephen , PRASHANT, Kumar , VAN IERSEL, Maikel , FARROKHPANAH, Sonia
IPC分类号： C10G45/00 , C10G45/62 , C10G47/18 , B01J29/44 , C07C15/04
摘要： The present invention relates to a process for producing benzene comprising the steps of: a) separating a source feedstream comprising C5-C12 hydrocarbons including benzene and alkylbenzenes into a first feedstream comprising a higher proportion of benzene than the source feedstream and a second feedstream comprising a lower proportion of benzene than the source feedstream and subsequently, b) contacting the first feedstream in the presence of hydrogen with a first hydrocracking catalyst comprising 0.01-1 wt-% hydrogenation metal in relation to the total catalyst weight and a zeolite having a pore size of 5-8 Å and a silica (SiO2) to alumina (Al2O3) molar ratio of 5-200 under first process conditions to produce a first product stream comprising benzene, wherein the first process conditions include a temperature of 425-580° C., a pressure of 300-5000 kPa gauge and a Weight Hourly Space Velocity of 0.1-15 h−1, and c) contacting the second feedstream with hydrogen under second process conditions to produce a second product stream comprising benzene, wherein i) the second process conditions are suitable for hydrocracking and step (c) involves contacting the second feedstream in the presence of hydrogen with a second hydrocracking catalyst comprising 0.01-1 wt-% hydrogenation metal in relation to the total catalyst weight and a zeolite having a pore size of 5-8 Å and a silica (SiO2) to alumina (Al2O3) molar ratio of 5-200 under the second process conditions which include a temperature of 300-600° C., a pressure of 300-5000 kPa gauge and a Weight Hourly space Velocity of 0.1-15 h−1, ii) the second process conditions are suitable for toluene disproportionation and involve contracting the second feedstream with a toluene disproportionation catalyst, or iii) the second process conditions are suitable for hydrodealkylation.
摘要翻译：本发明涉及一种生产苯的方法，包括以下步骤：a）将包含C 5 -C 12烃（包括苯和烷基苯）的源原料流分离成包含比源原料流更高比例的苯的第一进料流，以及包含苯的比例低于源原料流，随后b）使氢存在下的第一进料流与相对于总催化剂重量的包含0.01-1重量％氢化金属的第一加氢裂化催化剂和具有孔径的沸石并且在第一工艺条件下，二氧化硅（SiO 2）与氧化铝（Al 2 O 3）摩尔比为5-200，以产生包含苯的第一产物流，其中第一工艺条件包括425-580℃的温度，压力为300-5000kPa表压，重量每小时空速为0.1-15h-1，和c）使第二进料流与氢在第二过程以产生包含苯的第二产物流，其中i）第二工艺条件适用于加氢裂化，步骤（c）包括在氢存在下使第二进料流与第二加氢裂化催化剂接触，所述第二加氢裂化催化剂包含0.01-1重量％氢化相对于总催化剂重量的金属和在第二工艺条件下的孔径为5-8和二氧化硅（SiO 2）与氧化铝（Al 2 O 3）摩尔比为5-200的沸石，其包括温度为300-600 ℃，压力为300-5000kPa表压，重量小时空间速度为0.1-15h-1，ii）第二工艺条件适用于甲苯歧化，并涉及用甲苯歧化催化剂收缩第二进料流，或 iii）第二工艺条件适用于加氢脱烷基化。

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