在300 m L连续加氢实验装置上,以神华鄂尔多斯直接液化工厂生产的加氢稳定油为原料,以加氢精制剂RNC-2为催化剂,考察了不同反应温度和体积空速对加氢产物性质及加氢精制反应过程的影响。结果表明:升高反应温度或降低体积空速,芳烃加氢...在300 m L连续加氢实验装置上,以神华鄂尔多斯直接液化工厂生产的加氢稳定油为原料,以加氢精制剂RNC-2为催化剂,考察了不同反应温度和体积空速对加氢产物性质及加氢精制反应过程的影响。结果表明:升高反应温度或降低体积空速,芳烃加氢饱和反应过程中的氢耗增大,产品油的密度、运动黏度及馏程降低;从不同反应条件加氢产品油中芳烃组成可以看出,芳烃加氢饱和反应过程中,总芳烃饱和率随反应温度的升高而升高、随体积空速的增大而降低,同时产物中多环芳烃饱和率>双环芳烃饱和率>单环芳烃饱和率,当反应温度为395℃、体积空速为0.7 h;时,总芳烃饱和率达到70.17%,同时加氢产品油中总环烷烃含量高达70.5%;煤直接液化加氢稳定油经过加氢精制反应后,其多环芳烃的质量分数均低于1%,硫和氮元素含量均低于10 mg/L,可用于制备高附加值环境友好型环烷基基础油。展开更多
结合目前中国大量的废弃脱硫石膏无法被合理利用的情况,讨论了钢厂中脱硫石膏制成铁酸钙回收利用的可能性。通过查询热力学数据进行计算研究,探讨石膏分解所需的气氛条件及相应条件下生成物组成。为达到最佳的分解效果,通过热力学计算...结合目前中国大量的废弃脱硫石膏无法被合理利用的情况,讨论了钢厂中脱硫石膏制成铁酸钙回收利用的可能性。通过查询热力学数据进行计算研究,探讨石膏分解所需的气氛条件及相应条件下生成物组成。为达到最佳的分解效果,通过热力学计算调整一氧化碳/二氧化碳混合气体各项参数进而控制实验的进行。相关基础实验在实验室中利用现有管式炉进行烧结还原。通过对XRD数据进行半定量分析来确定石膏在不同条件下分解产物的成分组成。结果表明1 050℃为石膏气固反应和固固反应交界点。同时混合气体中一氧化碳体积分数为5%、100 m L/min的气体流量,可以保证气固反应生成氧化钙的同时,硫化钙的量在合理的范围内。实验进一步利用硫酸钙作为钙源制得铁酸钙,为废弃石膏在钢铁厂回收利用提供理论基础。展开更多
The reaction behavior of oil sand from Inner Mongolia（China） were studied in a fluidizedbed pyrolysis process,and a comparative study was conducted on the properties of the liquid products obtained through fluidized...The reaction behavior of oil sand from Inner Mongolia（China） were studied in a fluidizedbed pyrolysis process,and a comparative study was conducted on the properties of the liquid products obtained through fluidized-bed pyrolysis of oil sand and the native bitumen obtained by solvent extraction.The results indicated that the fluidized-bed pyrolysis,a feasible carbon rejection process,can be used to upgrade oil sand.The reaction temperature and time were found to be the key operating parameters affecting the product distribution and yields in fluidized-bed pyrolysis of oil sand.The optimal temperature was 490℃ and the most suitable reaction time was 5 min.Under these operation conditions,the maximum yield of liquid product was 80wt%.In addition,the pyrolysis kinetics of oil sand at different heating rates of 5,10,20 and 30℃/min was investigated using a thermogravimetric analyzer（TGA）.展开更多
文摘在300 m L连续加氢实验装置上,以神华鄂尔多斯直接液化工厂生产的加氢稳定油为原料,以加氢精制剂RNC-2为催化剂,考察了不同反应温度和体积空速对加氢产物性质及加氢精制反应过程的影响。结果表明:升高反应温度或降低体积空速,芳烃加氢饱和反应过程中的氢耗增大,产品油的密度、运动黏度及馏程降低;从不同反应条件加氢产品油中芳烃组成可以看出,芳烃加氢饱和反应过程中,总芳烃饱和率随反应温度的升高而升高、随体积空速的增大而降低,同时产物中多环芳烃饱和率>双环芳烃饱和率>单环芳烃饱和率,当反应温度为395℃、体积空速为0.7 h;时,总芳烃饱和率达到70.17%,同时加氢产品油中总环烷烃含量高达70.5%;煤直接液化加氢稳定油经过加氢精制反应后,其多环芳烃的质量分数均低于1%,硫和氮元素含量均低于10 mg/L,可用于制备高附加值环境友好型环烷基基础油。
文摘结合目前中国大量的废弃脱硫石膏无法被合理利用的情况,讨论了钢厂中脱硫石膏制成铁酸钙回收利用的可能性。通过查询热力学数据进行计算研究,探讨石膏分解所需的气氛条件及相应条件下生成物组成。为达到最佳的分解效果,通过热力学计算调整一氧化碳/二氧化碳混合气体各项参数进而控制实验的进行。相关基础实验在实验室中利用现有管式炉进行烧结还原。通过对XRD数据进行半定量分析来确定石膏在不同条件下分解产物的成分组成。结果表明1 050℃为石膏气固反应和固固反应交界点。同时混合气体中一氧化碳体积分数为5%、100 m L/min的气体流量,可以保证气固反应生成氧化钙的同时,硫化钙的量在合理的范围内。实验进一步利用硫酸钙作为钙源制得铁酸钙,为废弃石膏在钢铁厂回收利用提供理论基础。
基金the financial support provided by the National Science Foundation of China (21176252)the China National Petroleum Science Research Program (2011B-2404-01)
文摘The reaction behavior of oil sand from Inner Mongolia（China） were studied in a fluidizedbed pyrolysis process,and a comparative study was conducted on the properties of the liquid products obtained through fluidized-bed pyrolysis of oil sand and the native bitumen obtained by solvent extraction.The results indicated that the fluidized-bed pyrolysis,a feasible carbon rejection process,can be used to upgrade oil sand.The reaction temperature and time were found to be the key operating parameters affecting the product distribution and yields in fluidized-bed pyrolysis of oil sand.The optimal temperature was 490℃ and the most suitable reaction time was 5 min.Under these operation conditions,the maximum yield of liquid product was 80wt%.In addition,the pyrolysis kinetics of oil sand at different heating rates of 5,10,20 and 30℃/min was investigated using a thermogravimetric analyzer（TGA）.
