Chinese Academy of Sciences

Shanxi Lu'an Mining (group) Co., Ltd.

Shanxi Luan Environmental Energy Development Co., Ltd.

Dongfei Wang

Mei Dong

Jianguo Wang

Weibin Fan

Yaning Xiao

Min Zhang

Jiaqi Guo

Shoujing Sun

Weilin Wang

Guofu Wang

Yunhong Li

Juncai Zhang

Youliang Cen

Bin Liu

Yibo Zhang

Yuhan Sun

Fei Yu

Weiyong Jiao

Liangshu Zhong

Pengfei Wang

Huaqing Zhu

Zhiwei Wu

Junyi Liu

Jinbo Li

Yanbin Cui

Zhengjia Li

Yunlei An

Xingzhen Qi

Dezhi Shi

Tiejun Lin

A continuous slurry-bed tank reactor, comprising a tank reactor body, an agitator, and tubular separation membranes. A method of using the continuous slurry-bed tank reactor comprising adding a catalyst, feeding reactants, stopping feeding the reactants, starting a heating system, changing directions of the reactants flowing through the tubular separation membranes.

Continuous slurry-bed tank reactor and method of using same

An aromatization catalyst and preparation process and use thereof is set forth. The catalyst comprises an inorganic oxide and a modified Ga-ZSM-5 zeolite, which comprises a modified ZSM-5 zeolite with a hierarchical macro-meso-microporosity and gallium deposited in channels of and/or on surfaces of the modified ZSM-5 zeolite. The hierarchical porosity of the modified ZSM-5 zeolite in the catalyst can reduce diffusion resistance of products during the aromatization reaction, thereby retarding carbon depositing rate and substantially improving catalytic activity, aromatic hydrocarbon selectivity, stability and lifetime of the catalyst. When being used in aromatization of propane, the catalyst exhibits a high stability, a lifetime of more than 320 hours, and a selectivity to aromatic hydrocarbons of up to 73.3 wt. %.

Aromatization catalyst and preparation process and use thereof

A cobalt carbide-based catalyst for direct production of olefin from synthesis gas, a preparation method therefor and application thereof are disclosed. The method for preparing the catalyst comprises the following steps: 1) mixing a cobalt source with water, or mixing a cobalt source, an electron promoter and water to obtain a first solution; and mixing a precipitant with water to obtain a second solution; 2) adding the first solution and the second solution to water, or water and a structure promoter for precipitation, crystallizing, separating, drying and calcination; and 3) reducing a solid obtained in Step 2) in a reducing atmosphere, and then carbonizing in a carbonizing atmosphere. The prepared catalyst has high activity and high selectivity to olefins for direct production of olefins via syngas conversion.

Cobalt carbide-based catalyst for direct preparation of olefin from synthesis gas, preparation method therefor and application thereof

The disclosure relates to a process for continuously producing polyoxymethylene dimethyl ethers at low temperature, pertains to the technical field of polyoxymethylene dimethyl ether preparation processes, and solves the technical problem of continuous production of polyoxymethylene dimethyl ether. A membrane separation element with precisely controlled pores in membrane is used to realize a direct separation of the feedstocks from the catalyst within the reactor, and effectively reduce the permeation resistance of the separation membrane tube. By oppositely switching the flowing direction of liquid reaction materials, the adhesion of the catalyst to the separation membrane tube is inhibited, and some particles stuck in separation membrane tube are removed, which ensures the continuous operation of the reaction process and allows a molecular sieve catalyst to exhibit its advantage of long catalytic life.

Process for continuously producing polyoxymethylene dimethyl ethers at low temperature

Growing community of inventors

Taiyuan, China

Dongfei Wang