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    Method for preparing acetaldehyde from acetylene under catalysis of ZAPO molecular sieve
    3.
    发明授权
    Method for preparing acetaldehyde from acetylene under catalysis of ZAPO molecular sieve 有权

    公开(公告)号：US12017981B2

    公开(公告)日：2024-06-25

    申请号：US17635515

    申请日：2021-04-28

    Applicant: BOZUN INVESTMENT GROUP LIMITED

    Inventor： Yibo Jiang ,  Yufan Ying ,  Zheng Li

    IPC: C07C45/26 ,  C07C45/78

    CPC classification number: C07C45/26 ,  C07C45/78

    Abstract: Disclosed is a method for preparing acetaldehyde from acetylene under the catalysis of a ZAPO molecular sieve. The method comprises the steps of pre-heating an acetylene raw material gas and water, subjecting same to continuous hydration in a fluidized bed under the catalysis of the ZAPO molecular sieve to prepare acetaldehyde, and then subjecting same to separation, absorption and rectification to obtain an acetaldehyde product, wherein the catalyst can be continuously regenerated for use. The process of the present application is simple, stable and efficient, solves the problem of the dependence nature of the production of acetaldehyde by means of acetylene hydration on a mercury catalyst, avoids the harm caused by mercury to the human body and the environment, and has higher production and use values.

    METHOD FOR PREPARING ACETALDEHYDE FROM ACETYLENE UNDER CATALYSIS OF ZAPO MOLECULAR SIEVE
    5.
    发明申请
    METHOD FOR PREPARING ACETALDEHYDE FROM ACETYLENE UNDER CATALYSIS OF ZAPO MOLECULAR SIEVE 有权

    公开(公告)号：US20230059377A1

    公开(公告)日：2023-02-23

    申请号：US17635515

    申请日：2021-04-28

    Applicant: BOZUN INVESTMENT GROUP LIMITED

    Inventor： Yibo Jiang ,  Yufan Ying ,  Zheng Li

    IPC: C07C45/26 ,  C07C45/78

    Abstract: Disclosed is a method for preparing acetaldehyde from acetylene under the catalysis of a ZAPO molecular sieve. The method comprises the steps of pre-heating an acetylene raw material gas and water, subjecting same to continuous hydration in a fluidized bed under the catalysis of the ZAPO molecular sieve to prepare acetaldehyde, and then subjecting same to separation, absorption and rectification to obtain an acetaldehyde product, wherein the catalyst can be continuously regenerated for use. The process of the present application is simple, stable and efficient, solves the problem of the dependence nature of the production of acetaldehyde by means of acetylene hydration on a mercury catalyst, avoids the harm caused by mercury to the human body and the environment, and has higher production and use values.

    Hydroformylation system with vent reactor recycle to primary reactor
    7.
    发明授权
    Hydroformylation system with vent reactor recycle to primary reactor 有权

    公开(公告)号：US11155510B2

    公开(公告)日：2021-10-26

    申请号：US16920856

    申请日：2020-07-06

    Applicant: OQ Chemicals Corporation

    Inventor： Kyle J. Zalman ,  Markus Heuwes ,  Christopher J. Bischoff

    IPC: C07C45/50 ,  C07C45/78 ,  B01J4/00 ,  B01J19/00 ,  B01J19/18 ,  B01J31/18

    Abstract: A hydroformylation system for making aldehydes includes: (a) a primary reactor provided with catalyst feed, syngas feed and olefin feed adapted to convert the olefin and syngas to product aldehyde; (b) a first liquid vapor separator coupled to the primary reactor for receiving output therefrom, adapted to separate the product aldehyde into a crude aldehyde product stream and a vent stream containing syngas and unreacted olefin; (c) a vent reactor coupled to the first liquid vapor separator to receive the vent stream therefrom, the vent reactor also being coupled to the primary reactor which is configured to provide catalyst thereto, wherein the vent reactor is operative to convert unreacted olefin in the vent stream from the first liquid vapor separator to additional product aldehyde. A second liquid vapor separator is coupled to the vent reactor to receive output therefrom and adapted to separate the output from the vent reactor into a liquid recycle stream containing additional product aldehyde and catalyst as well as another vent stream, the second liquid vapor separator also being coupled to the primary reactor so as to provide the recycle stream thereto.

    Method and device for fermentation integrated with separation and purification of alcohols
    8.
    发明授权
    Method and device for fermentation integrated with separation and purification of alcohols 有权

    公开(公告)号：US11118198B2

    公开(公告)日：2021-09-14

    申请号：US15737796

    申请日：2016-06-15

    Applicant: Dalian University of Technology

    Inventor： Chuang Xue ,  Chao Zhu ,  Lijie Chen

    IPC: C12P7/16 ,  C12P7/28 ,  B01D71/02 ,  B01D3/00 ,  B01D3/14 ,  C12P7/06 ,  C07C45/78 ,  C07C45/81 ,  B01D5/00 ,  B01D61/36 ,  B01D71/70 ,  C07C29/76

    Abstract: The disclosure relates to a method for fermentation integrated with separation and purification of acetone, butanol, and ethanol (ABE) or butanol alone, comprising the following steps: 1) obtaining ABE by fermentation using an acetone-butanol-producing bacterium or obtaining butanol using a butanol-producing bacterium; 2) using a “vapor-stripping-vapor-permeation” method (briefly VSVP) for online separation and purification of ABE or purifying butanol from the fermentation broth; wherein the VSVP method comprises the following steps: introducing a gas bubble into the fermentation broth comprising active cells for fermentation to vaporize ABE or Butanol; subjecting the gas along with the vaporized ABE or Butanol to a membrane separation unit to pass through the membrane; recovering ABE or Butanol, or subjecting ABE or Butanol to a next separation device. By using the disclosed method, production, separation, and purification efficiency of ABE or butanol are improved with saved energy consumption and without increasing equipment investment.

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