Patents by Inventor Hongzhang Chen

Hongzhang Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9309577
    Abstract: Provided is a process for producing biomass-based product from straw hemicellulose and utilizing the components thereof thoroughly. Steam-explosion and acid-hydrolysis are combined in the pre-treatment of straw in the process, thus a higher concentration of a sugar liquid can be obtained, and furfural and acetic acid can be recovered. The hemicellulose obtained by the pre-treatment can be used directly as ferment materials for producing butanol, succinic acid, butylene glycol, lactic acid, hydrogen and firedamp, which reduces the cost of these biomass-based products. The cellulose and lignin obtained by extracting the straw with an alkaline solution can produce products, such as sodium hydroxymethyl cellulose etc. In the process, all components in the straw can be utilized thoroughly and waste and pollutant will not be produced.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: April 12, 2016
    Assignee: Institute of Process Engineering, Chinese Academy of Sciences
    Inventors: Hongzhang Chen, Lan Wang
  • Publication number: 20130252293
    Abstract: Provided is a process for producing biomass-based product from straw hemicellulose and utilizing the components thereof thoroughly. Steam-explosion and acid-hydrolysis are combined in the pre-treatment of straw in the process, thus a higher concentration of a sugar liquid can be obtained, and furfural and acetic acid can be recovered. The hemicellulose obtained by the pre-treatment can be used directly as ferment materials for producing butanol, succinic acid, butylene glycol, lactic acid, hydrogen and firedamp, which reduces the cost of these biomass-based products. The cellulose and lignin obtained by extracting the straw with an alkaline solution can produce products, such as sodium hydroxymethyl cellulose etc. In the process, all components in the straw can be utilized thoroughly and waste and pollutant will not be produced.
    Type: Application
    Filed: January 28, 2011
    Publication date: September 26, 2013
    Applicant: Institute of Process Engineering, Chinese Academy of Sciences
    Inventors: Hongzhang Chen, Lan Wang
  • Patent number: 8333999
    Abstract: The invention provides a process for co-producing ethanol and Radix Puerariae flavones and utilizing Radix Puerariae fibers from Radix Puerariae by way of clean solid state fermentation, and the device used therein. The process comprises the following steps: providing Radix Puerariae as raw material; pretreating the Radix Puerariae raw material by steam explosion; producing and separating ethanol by continuous coupled solid state fermentation; filtering off fermentation residues; and extracting and purifying Radix Puerariae flavones from the filtrate. The process achieves an effective and comprehensive utilization of Radix Puerariae.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: December 18, 2012
    Assignees: Institute of Process Engineering, Chinese Academy of Sciences, Hu Nan Qiangsheng Medicine Co., Ltd.
    Inventors: Hongzhang Chen, Xiaoguo Fu, Weidong Wang
  • Publication number: 20110104773
    Abstract: The invention relates to a method for fractionally converting pennisetum hydridum into fuel ethanol with co-production of electricity generation and paper pulp, which comprises subjecting the pennisetum hydridum having been cut into segments to steam explosion treatment by utilizing a steam explosion device to obtain a steam explosion product, and said method is characterized in that it comprises the steps of: washing the steam explosion product with water to obtain fibers and water washing liquid containing a degraded hemicellulose, and separating and purifying the water washing liquid to obtain an xylo-oligosaccharide; fractionally teasing the fibers, and subjecting the obtained long fibers to an ethanol self-catalyzed pulping and then a bleaching treatment to obtain a paper pulp, and after recovering ethanol, obtaining an alcohol-soluble lignin by separation; preparing cellulase by a solid state fermentation, that is, taking the short fibers obtained by fractionally teasing as a fermentation substrate of T
    Type: Application
    Filed: February 15, 2008
    Publication date: May 5, 2011
    Applicant: Green Resources Technology Limited
    Inventors: Hongzhang Chen, Jianxing Zhang, Cheuk Lam Leung, Yong Li
  • Publication number: 20100068778
    Abstract: The invention provides a process for co-producing ethanol and Radix Puerariae flavones and utilizing Radix Puerariae fibers from Radix Puerariae by way of clean solid state fermentation, and the device used therein. The process comprises the following steps: providing Radix Puerariae as raw material; pretreating the Radix Puerariae raw material by steam explosion; producing and separating ethanol by continuous coupled solid state fermentation; filtering off fermentation residues; and extracting and purifying Radix Puerariae flavones from the filtrate. The process achieves an effective and comprehensive utilization of Radix Puerariae.
    Type: Application
    Filed: July 27, 2007
    Publication date: March 18, 2010
    Applicants: HU NAN QIANGSHENG MEDICINE CO., LTD.
    Inventors: Hongzhang Chen, Xiaoguo Fu, Weidong Wang
  • Publication number: 20090246847
    Abstract: A method for producing ethanol from steam-exploded sweet potato by fermentation includes subjecting sweet potato to a steam explosion treatment, subjecting the sweet potato after the steam explosion to saccharification and fermentation, and collecting ethanol produced by the fermentation. The sweet potato can optionally be subjected to a pre-treatment utilizing a short-time, low-pressure steam explosion technology, which omits the long-time cooking process for the starch-based raw material and reduces the energy consumption for producing ethanol by fermentation.
    Type: Application
    Filed: March 26, 2009
    Publication date: October 1, 2009
    Applicants: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES, HU NAN QIANGSHENG MEDICINE CO. LTD.
    Inventors: HONGZHANG CHEN, XIAOGUO FU, WEIDONG WANG
  • Patent number: 7183074
    Abstract: The gas dual-dynamic solid state fermentation technique consists of placing the solid materials to be fermented in an air environment with pulsating pressure and cyclic flow to carry out fermentation, the fermentation apparatus comprises a horizontal cylindrical tank with a quick door mechanism, in the tank are axially disposed rectangular spacer barrels of square cross-section constructed by four baffles, in the space between baffles and the tank wall are provided cooler tubes in parallel with the baffles, in the middle of the spacer barrels are provided vertically many sets of cooler tubes, on the lower baffles in the tank is provided axially an fixed track, on which are movable tray racks that can roll on the track, the tray racks having thereon a plurality of layers of trays, at the rear of the tank is provided a centrifugal blowers for forcing gas cycling in the tank.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: February 27, 2007
    Assignee: Institute of Process Engineering, Chinese Academy of Sciences
    Inventors: Hongzhang Chen, Zuohu Li
  • Publication number: 20030138943
    Abstract: The gas dual-dynamic solid state fermentation technique consists of placing the solid materials to be fermented in an air environment with pulsating pressure and cyclic flow to carry out fermentation, the fermentation apparatus comprises a horizontal cylindrical tank with a quick door mechanism, in the tank are axially disposed rectangular spacer barrels of square cross-section constructed by four baffles, in the space between baffles and the tank wall are provided cooler tubes in parallel with the baffles, in the middle of the spacer barrels are provided vertically many sets of cooler tubes, on the lower baffles in the tank is provided axially an fixed track, on which are movable tray racks that can roll on the track, the tray racks having thereon a plurality of layers of trays, at the rear of the tank is provided a centrifugal blowers for forcing gas cycling in the tank.
    Type: Application
    Filed: January 14, 2003
    Publication date: July 24, 2003
    Inventors: Hongzhang Chen, Zuohu Li
  • Patent number: D933590
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 19, 2021
    Inventor: Hongzhang Chen