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公开(公告)号：US20230338935A1
公开(公告)日：2023-10-26
申请号：US18025660
申请日：2020-09-11
Inventor： Jiacheng XING , Liping YANG , Danhua YUAN , Yunpeng XU , Zhongmin LIU
CPC classification number: B01J31/1691 , B01J35/1019 , B01J35/1023 , B01J35/1028 , B01J35/026 , B01J35/1057 , B01J37/04 , B01J37/031 , C07D301/19 , C07F7/28 , B01J2531/46 , B01J2531/004 , B01J2231/72
Abstract: A metal-organic framework (MOF) MIL-125 and a preparation method and a use thereof are provided. The MOF MIL-125 is a round cake-like crystal and has an external specific surface area (SSA) of 160 m2/g to 220 m2/g. The MOF MIL-125 provided in the present application has a large number of microporous structures, a large external SSA, and a high catalytic activity in oxidation.
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公开(公告)号：US20230085715A1
公开(公告)日：2023-03-23
申请号：US17801811
申请日：2020-10-16
Inventor： Tao ZHANG , Mao YE , Jinling ZHANG , Shuliang XU , Hailong TANG , Xiangao WANG , Cheng ZHANG , Jinming JIA , Jing WANG , Hua LI , Chenggong LI , Zhongmin LIU
Abstract: 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.
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公开(公告)号：US20230002682A1
公开(公告)日：2023-01-05
申请号：US17784647
申请日：2020-10-16
Inventor： Mao YE , Tao ZHANG , Jinling ZHANG , Shuliang XU , Hailong TANG , Xiangao WANG , Cheng ZHANG , Jinming JIA , Jing WANG , Hua LI , Chenggong LI , Zhongmin LIU
Abstract: 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.
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公开(公告)号：US20230001370A1
公开(公告)日：2023-01-05
申请号：US17784649
申请日：2020-10-16
Inventor： Tao ZHANG , Mao YE , Jinling ZHANG , Shuliang XU , Hailong TANG , Xiangao WANG , Cheng ZHANG , Jinming JIA , Jing WANG , Hua LI , Chenggong LI , Zhongmin LIU
Abstract: 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.
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公开(公告)号：US20210246093A1
公开(公告)日：2021-08-12
申请号：US17054894
申请日：2018-08-01
Inventor： Youming NI , Wenliang ZHU , Zhongmin LIU , Yong LIU , Hongchao LIU , Xiangang MA , Shiping LIU
Abstract: Provided is a method for directly preparing dimethyl ether by synthesis gas, the method comprises: the synthesis gas is passed through a reaction zone carrying a catalyst, and reacted under the reaction conditions sufficient to convert at least a portion of the raw materials to obtain the reaction effluent comprising dimethyl ether; and the dimethyl ether is separated from the reaction effluent, wherein the catalyst is zinc aluminum spinel oxide. In the present invention, only one zinc aluminum spinel oxide catalyst is used, which can make the synthesis gas to highly selectively form dimethyl ether, the catalyst has good stability and can be regenerated. The method of the present invention realizes the production of dimethyl ether in one step by the synthesis gas, and reduces the large energy consumption problem caused by step-by-step production.
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Patent Agency Ranking
公开(公告)号：US20210130179A1
公开(公告)日：2021-05-06
申请号：US16488732
申请日：2017-02-27
Inventor： Peng TIAN , Xiao XIANG , Zhongmin LIU , Lei CAO
Abstract: Disclosed are a Cu-SAPO molecular sieve with coexisting crystal phases of CHA and GME, a synthesis process therefor and the use thereof in a denitration reaction. A XRD diffraction pattern of the Cu-SAPO molecular sieve shows the characteristic of broad peaks and narrow peaks coexisting. An inorganic framework has the following chemical composition: wCu—(SixAlyPz)O2, wherein x, y and z respectively represent the molar fractions of Si, Al and P; the molar fraction ranges thereof are respectively x=0.01˜0.28, y=0.35˜0.55 and z=0.28˜0.50, with x+y+z=1; w is the molar number of Cu per mole of (SixAlyPz)O2; and w=0.001˜0.124. The synthesized molecular sieve can be used as a catalyst for a selective reduction of NOx.
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公开(公告)号：US20200231523A1
公开(公告)日：2020-07-23
申请号：US16647585
申请日：2017-09-29
Inventor： Hongchao LIU , Wenliang ZHU , Zhongmin LIU , Yong LIU , Shiping LIU , Fuli WEN , Youming NI , Xiangang MA
IPC: C07C29/154 , B01J19/18
Abstract: A method for directly producing ethanol from syngas, carried out in three reaction zones, including: feeding a raw material containing syngas and dimethyl ether into a first reaction zone to contact with a solid acid catalyst, reacting; allowing the effluent from the first reaction zone to enter a second reaction zone to contact with a metal catalyst and react; separating the effluent from the second reaction zone to obtain product ethanol and by-product methanol; allowing by-product methanol to enter a third reaction zone to perform a dehydration reaction to obtain dimethyl ether, and allowing the obtained dimethyl ether to enter the first reaction zone to recycle the reaction. This provides a novel method for directly converting syngas to ethanol and an ethanol product can be directly produced by using syngas as a raw material.
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公开(公告)号：US20200179917A1
公开(公告)日：2020-06-11
申请号：US16608818
申请日：2017-04-27
Inventor： Zhongmin LIU , Zhengxi YU , Shukui ZHU , Yue YANG
Abstract: Disclosed is an in-situ preparation method for a catalyst for Reaction I: methanol and/or dimethyl ether with toluene are used to prepare light olefins and co-produce para-xylene, and/or Reaction II: methanol and/or dimethyl ether with benzene are used to prepare at least one of toluene, para-xylene and light olefins, comprising: contacting at least one of a phosphorus reagent, a silylation reagent and water vapor with a molecular sieve in a reactor to prepare, in situ, the catalyst for the Reaction I and/or the Reaction II, wherein the reactor is a reactor of the Reaction I and/or the Reaction II. By directly preparing a catalyst in a reaction system, the entire chemical production process is simplified, the catalyst preparation and transfer steps are saved, and the operation thereof is easy. The catalyst prepared in situ can be directly used for in situ reactions.
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公开(公告)号：US20180370896A1
公开(公告)日：2018-12-27
申请号：US15743936
申请日：2015-12-08
Inventor： Hongchao LIU , Wenliang ZHU , Yong LIU , Youming NI , Zhongmin LIU , Linying WANG , Peng TIAN
IPC: C07C67/37 , C07C51/377 , C07C29/147 , B01J29/76 , B01J29/74 , B01J29/70
Abstract: The present invention provides a method for producing methyl acetate, and the method comprises a step in which dimethyl ether and a raw gas containing carbon monoxide and hydrogen go through a reactor loaded with a catalyst for carrying out a carbonylation reaction; wherein the catalyst contains an acidic EMT zeolite molecular sieve. The present invention has provided a new method for producing methyl acetate. In the method of the present invention, the carbonylation is carried out in the presence of the catalyst containing the acidic EMT zeolite molecular sieve, and the reaction activity is high, and the stability has been significantly improved, meeting the requirement of industrial production.
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公开(公告)号：US20180201557A1
公开(公告)日：2018-07-19
申请号：US15763296
申请日：2015-12-08
Inventor： Youming NI , Wenliang ZHU , Yong LIU , Hongchao LIU , Lei SHI , Zhongmin LIU
IPC: C07C29/10 , C07C31/20 , B01J29/08 , B01J29/18 , B01J29/40 , B01J29/65 , B01J29/70 , B01J31/02 , B01J39/05
CPC classification number: C07C29/10 , B01J29/088 , B01J29/185 , B01J29/405 , B01J29/655 , B01J29/70 , B01J29/7057 , B01J29/7088 , B01J31/0227 , B01J39/05 , C07C31/202 , C07C2529/08 , C07C2529/18 , C07C2529/40 , C07C2529/65 , C07C2529/70 , C07C2531/025 , Y02P20/52
Abstract: This invention provides a method for preparing ethylene glycol by hydrolysing ethylene glycol monomethyl ether. The method comprises passing a fresh raw material containing ethylene glycol monomethyl ether and water through a reaction zone loaded with a solid acid catalyst to react under the following conditions; separating the reacted mixture via a separation system to obtain a target product of ethylene glycol, by-products containing methanol, dimethyl ether and ethylene glycol-based derivatives, and an unreacted raw material containing ethylene glycol monomethyl ether and water; passing the target product of ethylene glycol into a product collection system; and passing methyl alcohol and dimethyl ether in the by-products into a by-product collection system; and after being mixed with the fresh raw materials containing ethylene glycol monomethyl ether and water, the ethylene glycol-based derivatives in the by-products and the unreacted raw material containing ethylene glycol monomethyl ether and water being recycled into the reaction zone, to realize the preparation of ethylene glycol by hydrolysing ethylene glycol monomethyl ether. This invention provides a new process to realize the preparation of ethylene glycol by hydrolysing ethylene glycol monomethyl ether. And in the method, the catalyst has long life and good stability.
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