Chinese Academy of Sciences

Sabic Global Technologies B.v.

Exxonmobil Chemical Patents Inc.

Exxon Chemical Patents, Inc.

Bp P.l.c.

Dalian Institute of Chemical Physics

Zhongmin Liu

Mao Ye

Tao Zhang

Xiangao Wang

Jinling Zhang

Yong Liu

Hongchao Liu

Wenliang Zhu

Youming Ni

Hailong Tang

Jinming Jia

Yinfeng Zhao

Changqing He

Shiping Liu

Cheng Zhang

Peng Fei Tian

Chenggong Li

Hua Li

Xiangang Ma

Jing Wang

Yunpeng Xu

Lei Xu

Hui Zhou

Shuliang Xu

Danhua Yuan

Lina Li

Yue Yang

Ying Zhang

Xiong Su

Dong Fan

Shuanghe Meng

Miao Yang

Zhiyang Chen

Linying Wang

Yue Qi

Lei Shi

Lin Liu

Jiacheng Xing

Hua Wang

Zhengxi Yu

Talal Khaled Al-Shammari

Ying Sun

Bing Li

Hongyi Yang

Lixin Yang

Kunyuan Wang

Guangyu Cai

Shiyun Sang

Zhihui Lv

Jibin Zhou

Guangye Liu

Shukui Zhu

Mingzhi Li

Yu Liu

Wei Huang

Martin Philip Atkins

Kai Huang

Xinzhi Zhang

Yi-Gang Xiong

Dawei He

Haitao Liu

Qiang Guo

Shiying Li

Peng Xie

Ziqiao Zhou

Changmin Bai

Chenglin Sun

Xiexian Guo

By Juan Liang, Legal Representative

Xiexian Guo, Deceased

Zhaoan Chen

Yanan Liu

Yingxu Wei

Fuli Wen

Jingjing Shen

Xuebin Zhao

Beibei Gao

Yuyan Qiao

Zhanling Ma

Qiwei Chen

Xiao Xiang

Yanli He

Pengfei Wu

Xiaojian Min

Gongwei Wang

Zhijia Song

Xinglong Dong

Dehua Wang

Cuiyu Yuan

Xinde Sun

Lei Cao

Juan Tan

Tao Huang

A catalyst for pyrolysis of 1,2-dichloroethane (1,2-DCE) to prepare vinyl chloride monomer (VCM), a preparation method, a use, and a regeneration method thereof are provided. The catalyst for pyrolysis of 1,2-DCE to prepare VCM includes a silicon-aluminum molecular sieve. The catalyst for pyrolysis of 1,2-DCE to prepare VCM has high reaction activity and excellent selectivity and solves the problem that the pyrolysis of 1,2-DCE to prepare VCM in the prior art involves high reaction temperature and large energy consumption and is prone to coking and carbon deposition.

Catalyst for pyrolysis of 1,2-dichloroethane (DCE) to prepare vinyl chloride (VC) and preparation method, use, and regeneration method thereof

The present application discloses a method for preparing a hierarchical porous TS-1 molecular sieve, which uses a silicon-titanium ester polymer as both titanium source and silicon source. In the method, silicon and titanium are uniformly connected to a same polymer, and the hydrolysis rates thereof are equivalent during hydrolysis, which can prevent TiOprecipitation and reduce the generation of non-framework titanium. Further, the silicon-titanium ester polymer is not only used as both silicon source and titanium source, but also can be used as mesoporous template in the synthesis process. The obtained TS-1 molecular sieve has mesoporous structure with narrow pore size distribution, which plays an important role in promoting the application of TS-1 molecular sieve in the field of catalysis.

Method for preparation of hierarchical TS-1 molecular sieve

The present application discloses a method for preparing a hierarchical porous TS-1 molecular sieve comprising using a silicon-titanium ester polymer as both titanium source and silicon source. In the method, silicon and titanium are uniformly connected to a same polymer, and the hydrolysis rates thereof are equivalent during hydrolysis, which can prevent TiOprecipitation and reduce the generation of non-framework titanium. Further, the silicon-titanium ester polymer is not only used as both silicon source and titanium source, but also can be used as a mesoporous template in the synthesis process. The obtained TS-1 molecular sieve has mesoporous structure with narrow pore size distribution.

Method for preparing TS-1 molecular sieve with hierarchical pores

A coke control reactor, a device for preparing low-carbon olefins from an oxygen-containing compound, and a use thereof are provided. The coke control reactor includes a riser reactor and a bed reactor; the bed reactor includes a bed reactor shell, and the bed reactor shell encloses a reaction zone I, a transition zone, and a gas-solid separation zone I from bottom to top; a bed reactor distributor is arranged in the reaction zone I; a coke controlled catalyst delivery pipe is arranged outside the reaction zone I; an upper section of the riser reactor penetrates through a bottom of the bed reactor and is axially inserted in the bed reactor; and an outlet end of the riser reactor is located in the transition zone. The coke control reactor can control the conversion and generation of coke species in a catalyst.

Coke control reactor, device for preparing low-carbon olefins from oxygen-containing compound, and use thereof

A fluidized bed regenerator, a device for preparing low-carbon olefins, and a use thereof are provided. The fluidized bed regenerator includes a second activation zone, a first activation zone, and a gas-solid separation zone from bottom to top; the second activation zone axially communicates with the gas-solid separation zone; the first activation zone is arranged on a periphery of a junction between the second activation zone and the gas-solid separation zone; the first activation zone is an annular cavity; n baffles are radially arranged in the first activation zone, and the n baffles divide the first activation zone into n first activation zone subzones; and a catalyst circulation hole is formed in each of n−1 of the baffles such that a catalyst entering the first activation zone flows in an annular direction.

Fluidized bed regenerator, device for preparing low-carbon olefins, and use thereof

A regeneration device, a device for preparing low-carbon olefins, and a use thereof are provided. The regeneration device includes a first regenerator and a second regenerator; a first activation zone of the first regenerator is connected to the second regenerator through a pipeline, such that a catalyst in the first activation zone is able to be delivered to the second regenerator; and the second regenerator is connected to a gas-solid separation zone of the first regenerator through a pipeline, such that a catalyst in the second regenerator is able to be delivered to the gas-solid separation zone. The regeneration device can adjust the coke content, coke content distribution, and coke species in a dimethyl ether/methanol to olefins (DMTO) catalyst to control an operation window of the DMTO catalyst, which improves the selectivity for low-carbon olefins and the atomic economy of a methanol-to-olefins (MTO) technology.

Regeneration device, device for preparing low-carbon olefins, and use thereof

A fluidized bed reactor, a device, and a method for producing low-carbon olefins from oxygen-containing compound are provided. The fluidized bed reactor includes a reactor shell, a reaction zone, a coke control zone and a delivery pipe, where there are n baffles arranged in the coke control zone, and the n baffles divide the coke control zone into n sub-coke control zones which include a first sub-coke control zone, a second sub-coke control zone, and an nth sub-coke control zone; at least one catalyst circulation hole is provided on each of the n-1 baffles, so that the catalyst flows in an annular shape in the coke control zone, where n is an integer. The device and method can be adapted to a new generation of DMTO catalyst, and the unit consumption of production ranges from 2.50 to 2.58 tons of methanol/ton of low-carbon olefins.

Fluidized bed reactor, device and method for preparing low-carbon olefins from oxygen-containing compound

Disclosed by the present application is a method for producing methyl acetate by means of the carbonylation of dimethyl ether. The method comprises: passing dimethyl ether and a feed gas comprising carbon monoxide through a reactor loaded with a solid acid catalyst for reaction so as to produce methyl acetate, the molar ratio of carbon monoxide to dimethyl ether being 0.05:1-0.5:1. The described method has the advantages of a low molar ratio of carbon monoxide to dimethy1 ether, a high conversion rate of carbon monoxide, a small gas circulation amount, low operation costs and so on.

Method for producing methyl acetate by means of carbonylation of dimethyl ether

The present disclosure includes a system for producing low carbon olefins and/or aromatics from raw material comprising naphtha. The system can include a reaction unit that includes a fast fluidized bed reactor, a stripping unit that includes a stripper, and a regeneration unit. The reactor unit is adapted to allow the catalytic cracking of naphtha and to output reaction unit effluent material (spent catalyst and product gas) into the stripping unit, which is adapted to output product gas. The stripping unit is connected to and in fluid communication with the regeneration unit such that the stripping unit supplies the spent catalyst from the reaction unit to regeneration unit. The regeneration unit is adapted to regenerate the spent catalyst to form regenerated catalyst. The regeneration unit is connected to and in fluid communication with the fast fluidized bed reactor such that, in operation, regenerated catalyst can be sent to the fast fluidized bed reactor of the reaction unit.

System for catalytic cracking of naphtha with mixed spent and regenerated catalyst

The present application discloses a method for preparing polyester polyol comprising performing transesterification of raw materials containing inorganic oxyacid ester and polyhydric alcohol to obtain the polyester polyol. The polyester polyol obtained by the method described in the present application has higher heat resistance.

Method for preparing polyester polyol

Provided are a molecular sieve catalyst, a preparation method therefor, an application thereof. The molecular sieve catalyst contains a modified Na-MOR molecular sieve, and the modification comprises: organic ammonium salt exchange, dealumination treatment, and ammonium ion exchange. The catalyst obtained by the method is used in dimethyl ether for one-step production of methyl acetate. The catalyst has high activity and stable performance, and the needs of industrial production can be satisfied.

Molecular sieve catalyst, preparation method therefor, and application thereof

Disclosed is a method for partially regenerating a catalyst for methanol and/or dimethyl ether-to-olefin. The method comprises: introducing a mixed gas into a regenerated region containing a catalyst to be regenerated, and subjecting same to a partial regeneration reaction to obtain a regenerated catalyst, wherein the mixed gas contains water vapor and air; and in the regenerated catalyst, the coke content of at least part of the regenerated catalyst is greater than 1%. The method utilizes the coupling of a mixed gas of water vapor and air to activate a deactivated catalyst, selectively eliminate part of a coke deposit in the catalyst to be regenerated, and obtain a partially regenerated catalyst for methanol-to-olefin. Another aspect of the present invention is that further provided is a method for methanol and/or dimethyl ether-to-olefin by using the partially regenerated catalyst for methanol-to-olefin regenerated by means of the method.

Method for partially regenerating catalyst for methanol and/or dimethyl ether-to-olefin and method for methanol and/or dimethyl ether-to-olefin

A fluidized bed reactor includes a main shell and a coke control zone shell; the main shell includes an upper shell and a lower shell; the upper shell encloses a gas-solid separation zone, and the lower shell encloses a reaction zone; the reaction zone axially communicates with the gas-solid separation zone; the coke control zone shell is circumferentially arranged on an outer wall of the main shell; the coke control zone shell and the main shell enclose an annular cavity, and the annular cavity is a coke control zone; n baffles are radially arranged in the coke control zone, and the n baffles divide the coke control zone into n coke control zone subzones, where n is an integer; the coke control zone subzones are provided with a coke control raw material inlet; and a catalyst circulation hole is formed in each of n−1 of the baffles.

Fluidized bed reactor, device, and use thereof

A coke control reactor, and a device and method for preparing low-carbon olefins from an oxygen-containing compound are provided. The coke control reactor includes a coke control reactor shell, a reaction zone I, and a coke controlled catalyst settling zone; a cross-sectional area at any position of the reaction zone I is less than that of the coke controlled catalyst settling zone; n baffles are arranged in a vertical direction in the reaction zone I; the n baffles divide the reaction zone I into m reaction zone I subzones; and a catalyst circulation hole is formed in each of the baffles, such that a catalyst flows in the reaction zone I in a preset manner. A catalyst charge in the present coke control reactor can be automatically adjusted, and an average residence time of a catalyst in the coke control reactor can be controlled by changing process operating conditions.

Coke control reactor, and device and method for preparing low-carbon olefins from oxygen-containing compound

The present application discloses a molecular sieve-based catalyst modification apparatus. The apparatus comprises a feed unit, a modification unitand a cooling unitconnected in sequence; the feed unit comprises a catalyst feed unitand a modifier feed unit, a catalyst and a modifier are introduced into the modification unitrespectively by the catalyst feed unit and the modifier feed unit and are discharged from the modification unit after sufficient reaction in modification unit, and then enter the cooling unitfor cooling. The present application further discloses a use method for the molecular sieve-based catalyst modification apparatus. The use method comprises: introducing a catalyst and a modifier into the modification unitrespectively through the feed unit; wherein the catalyst is modified by the modifier in the modification unit, and then discharged to the cooling unitto cool until the temperature is lower than 50&#xb0; C., and then the cooled modified catalyst is transferred to any storage device.

Molecular sieve-based catalyst modification apparatus, and method

Growing community of inventors

Dalian, China

Zhongmin Liu