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Combined Process of Hydrocracking and Hydrofining of Coal Tar
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-11-10 , DOI: 10.1021/acs.energyfuels.0c02096 Menglong Niu 1 , Zhaoyang Song 1 , Liuyi Pan 2 , Yongli Yan 1 , Ning Liu 3 , Dong Li 2 , Wenhong Li 2
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-11-10 , DOI: 10.1021/acs.energyfuels.0c02096 Menglong Niu 1 , Zhaoyang Song 1 , Liuyi Pan 2 , Yongli Yan 1 , Ning Liu 3 , Dong Li 2 , Wenhong Li 2
Affiliation
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For coal tar hydrotreating technology, the combination of hydrofining and hydrocracking is a valuable research topic. Therefore, this paper will discuss this topic by comparing three different hydrogenation processes, which include hydrofining (process A); catalyst gradation of hydrofining and hydrocracking (process B); and hydrocracking of diesel fraction produced by hydrofining (process C). The research methods are mainly divided into three parts: product composition analysis, product properties analysis, and reaction kinetics analysis. The study reached the following conclusions: First, the combination of hydrofining and hydrocracking can get better quality gasoline and diesel oil. Second, process C has many advantages over process B and process A. The carbon number and hydrogen number of process C products are more concentrated. In process C, alkaline nitrogen is separated from coal tar in the form of ammonia with water or gas, so process C can effectively improve the service life of hydrocracking catalyst. Third, compared with the two catalysts graded and packed in the reactor, the two-stage hydrogenation method is more convenient in adjusting the ratio of gasoline to diesel oil. Finally, process C is recommended to complete the hydrogenation of coal tar through the analysis of the product composition, reaction path, and reaction kinetics.
中文翻译：
煤焦油加氢裂化加氢精制联合工艺
对于煤焦油加氢处理技术而言，加氢精制与加氢裂化相结合是一个有价值的研究课题。因此，本文将通过比较三种不同的氢化工艺（包括加氢精制（工艺A））来讨论该主题。加氢精制和加氢裂化的催化剂分级（工艺B）；加氢精制产生的柴油馏分的加氢裂化（过程C）。研究方法主要分为三个部分：产物组成分析，产物性质分析和反应动力学分析。该研究得出以下结论：首先，加氢精制和加氢裂化相结合可以获得更好质量的汽油和柴油。其次，方法C与方法B和方法A相比具有许多优势。方法C产品的碳数和氢数更加集中。在过程C中 碱氮与水或气体以氨的形式从煤焦油中分离出来，因此工艺C可有效提高加氢裂化催化剂的使用寿命。第三，与在反应器中分级和装填的两种催化剂相比，两级加氢方法在调节汽油与柴油的比例方面更为方便。最后，通过分析产物组成，反应路径和反应动力学，建议采用方法C完成煤焦油的加氢。
更新日期：2020-11-19
中文翻译：
煤焦油加氢裂化加氢精制联合工艺
对于煤焦油加氢处理技术而言，加氢精制与加氢裂化相结合是一个有价值的研究课题。因此，本文将通过比较三种不同的氢化工艺（包括加氢精制（工艺A））来讨论该主题。加氢精制和加氢裂化的催化剂分级（工艺B）；加氢精制产生的柴油馏分的加氢裂化（过程C）。研究方法主要分为三个部分：产物组成分析，产物性质分析和反应动力学分析。该研究得出以下结论：首先，加氢精制和加氢裂化相结合可以获得更好质量的汽油和柴油。其次，方法C与方法B和方法A相比具有许多优势。方法C产品的碳数和氢数更加集中。在过程C中 碱氮与水或气体以氨的形式从煤焦油中分离出来，因此工艺C可有效提高加氢裂化催化剂的使用寿命。第三，与在反应器中分级和装填的两种催化剂相比，两级加氢方法在调节汽油与柴油的比例方面更为方便。最后，通过分析产物组成，反应路径和反应动力学，建议采用方法C完成煤焦油的加氢。
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