The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 2010
Filed:
Jul. 27, 2005
Yuzhuo Zhang, Beijing, CN;
Geping Shu, Beijing, CN;
Jialu Jin, Beijing, CN;
Minli Cui, Beijing, CN;
Xiuzhang Wu, Beijing, CN;
Xiangkun Ren, Beijing, CN;
Yaowu Xu, Beijing, CN;
Shipu Liang, Beijing, CN;
Jianwei Huang, Beijing, CN;
Ming Yuan, Beijing, CN;
Juzhong Gao, Beijing, CN;
Yufei Zhu, Beijing, CN;
Yuzhuo Zhang, Beijing, CN;
Geping Shu, Beijing, CN;
Jialu Jin, Beijing, CN;
Minli Cui, Beijing, CN;
Xiuzhang Wu, Beijing, CN;
Xiangkun Ren, Beijing, CN;
Yaowu Xu, Beijing, CN;
Shipu Liang, Beijing, CN;
Jianwei Huang, Beijing, CN;
Ming Yuan, Beijing, CN;
Juzhong Gao, Beijing, CN;
Yufei Zhu, Beijing, CN;
Shenhua Group Corporation Limited, Beijing, CN;
China Shenhua Coal Liquefaction Corporation, Beijing, CN;
Abstract
Process for direct coal liquefaction of coal, including: (1) preparing a coal slurry from raw coal; (2) preheating the coal slurry, then feeding it into reaction system to undergo liquefaction reaction; (3) separating reaction products in a separator to form a liquid phase and a gas phase, wherein the liquid phase is fractionated in an atmospheric tower into a light oil fraction and a bottom product; (4) feeding the atmospheric tower bottom product to a vacuum tower to separate into distillate and vacuum residue; (5) mixing the light oil fraction and the distillate to form a mixture, then feeding the mixture to a suspended bed hydrotreating reactor with forced circulation for hydrogenation; (6) fractionating hydrogenation products into oil products and a hydrogen donor recycling solvent. The process can operate long periods, with higher reactor efficiency and utilization factor, increased liquid oil yield and can supply high-quality feedstock for further processing.