Chuan Li , Ze Gan , Tengfei Yang , Congcong Liu , Lu Yang , Tongtong Meng , Yanwen Ji , Wenan Deng , Xiaobin Wang
{"title":"通过煤炭液化产生的尾油中催化成分的循环来提高重质原料的转化率","authors":"Chuan Li , Ze Gan , Tengfei Yang , Congcong Liu , Lu Yang , Tongtong Meng , Yanwen Ji , Wenan Deng , Xiaobin Wang","doi":"10.1016/j.apcata.2024.119755","DOIUrl":null,"url":null,"abstract":"<div><p>The co-hydroprocessing of lignite and heavy residue generates a substantial amount of tail oil, compromising the technical efficiency and posing significant environmental hazards. We proposed a cascade utilization scheme via the combination of tail-oil cycling and tail-oil co-hydrocracking, to maximize the utilization of catalytic components and enhance the conversion of heavy feedstock. At a cycling ratio of 50 <em>wt</em>%, the conversion efficiency of carbonaceous solids increased from 88 % to over 95 % after 5 cycles. The effluent tail oil also represented a favorable hydrocracking performance when mixed with Merey atmospheric residue. The spent catalysts and iron-containing minerals gradually accumulated in solid residues, which provided additional catalytic components for hydrogenation and coke inhibition in the co-hydroprocessing and co-hydrocracking systems. Moreover, the cycling process improved the colloidal stability and enhanced the hydrogenolysis of heavy components, effectively curbing the degradation tendency within the reaction system and producing more light oils.</p></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced conversion of heavy feedstock through the circulation of catalytic components in tail oil derived from coal liquefaction\",\"authors\":\"Chuan Li , Ze Gan , Tengfei Yang , Congcong Liu , Lu Yang , Tongtong Meng , Yanwen Ji , Wenan Deng , Xiaobin Wang\",\"doi\":\"10.1016/j.apcata.2024.119755\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The co-hydroprocessing of lignite and heavy residue generates a substantial amount of tail oil, compromising the technical efficiency and posing significant environmental hazards. We proposed a cascade utilization scheme via the combination of tail-oil cycling and tail-oil co-hydrocracking, to maximize the utilization of catalytic components and enhance the conversion of heavy feedstock. At a cycling ratio of 50 <em>wt</em>%, the conversion efficiency of carbonaceous solids increased from 88 % to over 95 % after 5 cycles. The effluent tail oil also represented a favorable hydrocracking performance when mixed with Merey atmospheric residue. The spent catalysts and iron-containing minerals gradually accumulated in solid residues, which provided additional catalytic components for hydrogenation and coke inhibition in the co-hydroprocessing and co-hydrocracking systems. Moreover, the cycling process improved the colloidal stability and enhanced the hydrogenolysis of heavy components, effectively curbing the degradation tendency within the reaction system and producing more light oils.</p></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-04-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis A: General\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926860X24001996\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X24001996","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Enhanced conversion of heavy feedstock through the circulation of catalytic components in tail oil derived from coal liquefaction
The co-hydroprocessing of lignite and heavy residue generates a substantial amount of tail oil, compromising the technical efficiency and posing significant environmental hazards. We proposed a cascade utilization scheme via the combination of tail-oil cycling and tail-oil co-hydrocracking, to maximize the utilization of catalytic components and enhance the conversion of heavy feedstock. At a cycling ratio of 50 wt%, the conversion efficiency of carbonaceous solids increased from 88 % to over 95 % after 5 cycles. The effluent tail oil also represented a favorable hydrocracking performance when mixed with Merey atmospheric residue. The spent catalysts and iron-containing minerals gradually accumulated in solid residues, which provided additional catalytic components for hydrogenation and coke inhibition in the co-hydroprocessing and co-hydrocracking systems. Moreover, the cycling process improved the colloidal stability and enhanced the hydrogenolysis of heavy components, effectively curbing the degradation tendency within the reaction system and producing more light oils.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.