摘要
煤间接液化技术可实现煤的清洁转化,并部分解决石油对外依存的问题,成为我国替代石油和煤炭清洁化利用的有效途径之一。根据工业示范和初步商业化运行暴露的问题以及国内外研究成果,认为制约煤间接液化技术发展的瓶颈主要为:催化剂活性和选择性与国外先进水平存在差异、稳定性亟待提高,单台反应器产能较低,汽柴油产品不合格,提取有机物后合成水变为含盐废水等。为解决上述问题,国家能源集团承担了国家重点研发计划项目——先进煤间接液化及产品加工成套技术开发。本文详细总结了项目研究进展,包括:①通过对Co2C介导的原位转晶技术、载体优化及工程放大研究,实现10 kg级/批费托钴基催化剂中试规模的制备;在公斤级催化剂装量中试装置上C^+5时空产率≥0.3 kg/(kg·h),CO转化率≥90%,催化剂单次再生寿命≥6000 h,已具备工业试验的条件;②采用原位/非原位技术系统研究了催化剂活性相生成机理,完成铁基催化剂的实验室定型、中试到1 t/d的规模化生产,并在百吨油品/年中试装置运行时空产率≥1.0 kg/(kg·h),吨油剂耗≤1.0 kg,正在进行工业应用试验;③采用气固流化床装置活化费托铁基催化剂,搭建了气固流化床还原平台,完成20 t/批气固流化床的基础设计;④采用基于EMMS理论建立二相相互作用模型,并进行了浆态床反应器反应性能和流体力学模拟,并建立CFD-PBM模型,确定了65万t/a扩能改造的技术方案;⑤建立费托渣蜡的磁分离的装置、方法,完成20 L/h磁分离研究,分离后铁含量接近0.02%;⑥实现了以费托合成蜡为原料采用流化催化裂化技术生产汽油的催化剂和工艺流程实验室定型;⑦采用百万吨级煤直接/间接液化工业装置生产的柴油组分进行5 L/批调和,得到满足需求的调和柴油组分;⑧完成了采用膜分离技术实现费托合成水脱酸的实验室研究,完成�
Indirect coal liquefaction technology(ICLT)can realize the clean utilization of coal,which has become an effective way of oil replacement and the clean utilization of coal.The operation results of industrial demonstration and preliminary commercialization of ICTL indicate that the scale-development of ICTL is restricted by some bottlenecks,including unsatisfactory catalyst performance,low capacity per Fischer-Tropsch(F-T)reactor,unqualified gasoline and diesel products,synthetic water transferred to salty wastewater.To solve the above problems,the National Energy Group undertook the national key research and development project-“Advanced Indirect Coal Liquefaction and Product Processing Technology Development“.This paper summarized the research progress of the project in detail,including:①Through the in-situ crystal transfer technology mediated by Co2C,carrier optimization,engineering scale-up research,and the pilot-scale catalyst preparation of 10 kg/batch was achieved.The targets of≥0.3 kg/(kg·h)C^+5 space-time yield,≥90%CO conversion rate,and≥6000 h single regeneration life of the catalyst were obtained on the pilot plant with upgraded catalyst capacity.The cobalt-based catalyst for slurry F-T synthesis was qualified for industrial application trial.②The active phase formation mechanism of the iron F-T catalyst was systematically studied by in-situ/ex-situ technologies.1 t/d catalyst production was achieved based on the laboratory recipe finalization and scale-up research.The catalyst showed≥1.0 kg/(kg·h)space time yield and≤1.0 kg catalyst consumption per ton oil from the 100 t-oil/year pilot plant test.The iron-based catalysts for slurry F-T synthesis is applied into megaton industry units.③The gas-solid fluidized bed reactor applied for the activation of iron-based F-T catalyst.The basic design of 20 t/batch gas-solid fluidized technology was completed.④A two-phase interaction model based on the EMMS theory was established.A CFD-PBM model was developed based on the simulation of slur
作者
武鹏
吕元
郭中山
吕毅军
吴雷
徐炎华
门卓武
WU Peng;LU Yuan;GUO Zhongshan;LU Yijun;WU Lei;XU Yanhua;MEN Zhuowu(National Institute of Clean-and-Low-Carbon Energy,Beijing 102211,China;Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116021,China;Ningxia Coal Industry Co.Ltd.,China Energy Group,Yinchuan 750411,China;Sinopec Engineering Incorporation,Beijing 100101,China;School of Environmental Science and Engineering,Nanjing Tech University,Nanjing 211800,China)
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2020年第4期1222-1243,共22页
Journal of China Coal Society
基金
国家重点研发计划资助项目(2017YFB0602500)。
关键词
煤间接液化
费托合成
催化剂
气固流化床活化
浆态床反应器扩能
国六汽柴油
费托合成水
indirect coal liquefaction
F-T synthesis
catalyst
activation by gas-solid fluidized bed
capacity expansion of slurry-bed reactor
G6 gasoline/diesel
F-T synthetic water
