National Institute of Clean-and-low-carbon Energy

China Energy Investment Corporation Limited

Shenhua Group Corporation Limited

China Shenhua Coal Liquefaction Corporation

Yufei Zhu

Xin Huang

Jianwei Huang

Geping Shu

Jialu Jin

Shipu Liang

Yaowu Xu

Minli Cui

Ming Yuan

Juzhong Gao

Chuanfu Wang

Xiuzhang Wu

Yuzhuo Zhang

Xiangkun Ren

The present disclosure discloses a composite ZSM-5 molecular sieve, a preparation method thereof, a catalyst and a use thereof.

Composite ZSM-5 molecular sieve, preparation method therefor, catalyst and use thereof

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.

Process for direct coal liquefaction

Growing community of inventors

Beijing, China

Yufei Zhu