Patents by Inventor Yanfeng Zhang

Yanfeng Zhang 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).

  • Publication number: 20150099814
    Abstract: A method for preparing a liquid hydrocarbon from syngas. The method includes: 1) mixing crude syngas from a biomass gasifier and a hydrogen-rich gas to yield a mixed gas; 2) dehydrating and decarbonizing the mixed gas for removal of moisture, carbon dioxide, and impurities, to yield a fine syngas; 3) introducing the fine syngas to a Fischer-Tropsch synthesis device in the presence of a catalyst, controlling a reaction temperature of the Fischer-Tropsch synthesis at between 150 and 300° C. and a reaction pressure of between 2 and 4 MPa (A), to yield a liquid hydrocarbon and water which is discharged out of the Fischer-Tropsch synthesis device; and 4) returning 70-95 vol. % of exhaust gases from the Fischer-Tropsch synthesis device to step 3) to mix with the fine syngas, and introducing the resulting mixed gas to the Fischer-Tropsch synthesis device.
    Type: Application
    Filed: December 14, 2014
    Publication date: April 9, 2015
    Inventors: Yilong CHEN, Kan SONG, Pingyu KUAI, Yan GONG, Yanfeng ZHANG, Jiaqi JIN
  • Publication number: 20150096945
    Abstract: A slurry-liquid separator filter, including: a filter cylinder body, a filter pipe disposed in the filter cylinder body and a filter core disposed on the filter pipe, a material inlet disposed on the filter cylinder body, a solid residue outlet disposed at the bottom part of the filter cylinder body, and a filtrate outlet disposed at the middle-lower part of the filter cylinder body. The filter core includes a plurality of filter disks connected to the filter pipe, and the filter disks are perpendicular to the longitudinal axis of the filter cylinder body. The upper end of the filter pipe is connected to the rotational axis of a variable-frequency motor. The top part of the filter cylinder body and a transmission shaft of the variable-frequency motor are sealed through high pressure hard sealing.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Inventors: Yilong CHEN, Jiaqi JIN, Yanfeng ZHANG, Manyi JIANG
  • Publication number: 20150099813
    Abstract: A method for improving Fischer-Tropsch synthesis and recycling exhaust gases therefrom. The method includes: 1) transforming raw gas for Fischer-Tropsch synthesis using a water-gas shift reaction, transporting the transformed raw gas to a Fischer-Tropsch synthesis device for Fischer-Tropsch synthesis in the presence of a Fe-based or Co-based catalyst; 2) introducing exhaust gases from the Fischer-Tropsch synthesis device to a first pressure-swing adsorber for hydrogen recovery; 3) introducing the exhaust gases from 2) to a second pressure-swing adsorber for methane recovery; 4) returning part of the hydrogen obtained from 2) to 1) to mix with the raw gas, and transforming a resulting mixed gas to adjust a hydrogen/carbon ratio of the raw gas; and 5) introducing the methane in 3) to a methane reforming device to reform the methane whereby yielding syngas having relatively high hydrogen/carbon ratio, and transporting the syngas to 1) to mix with the raw gas.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Inventors: Yilong CHEN, Kan SONG, Pingyu KUAI, Yanfeng ZHANG, Jiaqi JIN
  • Publication number: 20150099891
    Abstract: Novel crystalline forms of (2R,3S,5R)-2-(2,5-Difluorophenyl)-5-[2-(methylsulfonyl)-2,6-dihydropyrrolo[3,4-c]pyrazol-5(4H)-yl]tetrahydro-2H-pyran-3-amine are potent inhibitors of dipeptidyl peptidase-IV and are useful for the treatment of non-insulin dependent (Type 2) diabetes mellitus. The invention also relates to pharmaceutical compositions containing these novel forms, processes to prepare these forms and their pharmaceutical compositions as well as uses thereof for the treatment of Type 2 diabetes.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Inventors: Itzia Z. Arroyo, Davida Krueger, Ping Chen, Aaron J. Moment, Tesfaye Biftu, Faye Sheen, Yanfeng Zhang
  • Patent number: 8999022
    Abstract: A method for producing synthetic gas from biomass by: a) grinding the biomass, feeding the biomass into a pyrolysis furnace while spraying a first superheated water vapor into the pyrolysis furnace, controlling the temperature of the pyrolysis furnace at 500-800° C., contacting the biomass with the first superheated water vapor for a pyrolysis reaction to yield crude synthetic gas and ash including coke; b) cooling the ash, and separating the coke from the ash; c) transporting the crude synthetic gas and the coke into a gasifier, spraying a second superheated water vapor into the gasifier, controlling the gasifier at an operating temperature of 1200-1600° C., contacting the biomass with the second superheated water vapor for a gasification reaction to yield primary synthetic gas; and d) cooling, removing dust, deacidifying, and desiccating the primary synthetic gas to obtain clean synthetic gas.
    Type: Grant
    Filed: January 20, 2013
    Date of Patent: April 7, 2015
    Assignee: Sunshine Kaidi New Energy Group Co., Ltd.
    Inventors: Yilong Chen, Hongming Tang, Yanfeng Zhang
  • Publication number: 20150093097
    Abstract: It is provided a method for resuming an interrupted session of multimedia content with a rendering device. It comprises the steps of reading a status information of the interrupted session, said information being stored in a portable device; and resuming the session of the multimedia content based on the status information read.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 2, 2015
    Applicant: Thomson Licensing
    Inventors: Yanfeng Zhang, Zhigang Zhang, Xaiojun Ma
  • Publication number: 20150045458
    Abstract: A method for converting carbon dioxide in flue gas into natural gas using dump energy. The method includes: 1) transforming and rectifying a voltage of dump energy generated from a renewable energy plant, introducing the voltage-transformed and rectified dump energy into an electrolyte solution to electrolyze water therein to yield H2 and O2; 2) purifying industrial flue gas to separate CO2 therein and purifying CO2; 3) transporting H2 generated and CO2 to a synthesis equipment, allowing a methanation reaction between H2 and CO2 to happen to yield a high-temperature mixed gas with main ingredients of CH4 and water vapor; 4) employing the high-temperature mixed gas to conduct indirect heat exchange with process water to yield superheated water vapor; 5) delivering the superheated water vapor to a turbine to generate electric energy, and returning the electric energy to step 1); and 6) condensing and drying the mixed gas.
    Type: Application
    Filed: October 24, 2014
    Publication date: February 12, 2015
    Inventors: Yanfeng ZHANG, Yilong CHEN, Zhilong WANG, Zhangjian FANG, Xingcai ZHENG
  • Publication number: 20150041720
    Abstract: A method for purifying biomass syngas, including: a) introducing syngas out of a gasifier, through a water-cooling flue to a water-cooling quench tower; b) introducing the syngas from the water-cooling quench tower to a waste heat boiler of a water-tube type and a waste heat boiler of a heat-tube type; c) washing the syngas from the waste heat boiler of the heat-tube type in a Venturi scrubber in the absence of a filler to remove dust; d) introducing the syngas from the Venturi scrubber to a wet electrical dust precipitator for conducting dust removal and tar mist removal; and e) extracting the syngas by a coal gas draft fan, and transporting the syngas to a wet gas tank for storage or to a downstream process for use.
    Type: Application
    Filed: June 24, 2014
    Publication date: February 12, 2015
    Inventors: Yanfeng ZHANG, Hongtao NIE, Minggui XIA, Wenyan LIU, Liang ZHANG
  • Publication number: 20150041719
    Abstract: A method for purifying biomass syngas under a positive pressure. The method includes: 1) aerating a pyrolysis gasifier by using an oxidation fan; 2) introducing syngas produced in the pyrolysis gasifier through a water-cooling flue to a water-cooling quench tower; 3) introducing the syngas from the water-cooling quench tower to a waste heat boiler of a water-tube type and a waste heat boiler of a heat-tube type; 4) introducing the syngas from the waste heat boiler of the heat-tube type to a Venturi scrubber in the absence of a filler to wash the syngas and remove dust; 5) introducing the syngas from the Venturi scrubber to a wet electrical dust precipitator for further removing the dust; and 6) transporting qualified syngas to a wet gas tank for storage or to a downstream process for use.
    Type: Application
    Filed: June 24, 2014
    Publication date: February 12, 2015
    Inventors: Yanfeng ZHANG, Hongtao NIE, Minggui XIA, Wenyan LIU, Liang ZHANG
  • Publication number: 20140377422
    Abstract: A method for removal of metal ions from rice hull. The method includes: 1) providing a water storage reactor, and disposing a gas dispersion device at the bottom of the water storage reactor; 2) bagging rice hull, placing it in the water storage reactor, and pressing down on the bagged rice hull to be lower than a water surface in the water storage reactor; 3) spraying industrial flue gas into the water storage reactor; controlling the amount of the industrial flue gas such that the amount of carbon dioxide dissolved in per 100 g of water is about 1 g, whereby generating a carbonic acid solution; 4) allowing the carbonic acid solution to react with metal ions in the rice hull to yield a precipitate; and 5) washing the rice hull collected in step 4), washing again with desalinated water, and then squeezing the rice hull.
    Type: Application
    Filed: September 4, 2014
    Publication date: December 25, 2014
    Inventors: Yilong CHEN, Yanfeng ZHANG, Leiming TAO, Wenxue LUO, Zhilong WANG, Zhixiang LUO, Yongjie XUE
  • Patent number: 8913627
    Abstract: A method and apparatus are described including receiving a report from an associated station, updating a list responsive to the report, adjusting a timeslot allocation map responsive to the updated list, encapsulating the adjusted map, transmitting the encapsulated adjusted map and assigning a timeslot specified in the timeslot allocation map to the associated station.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: December 16, 2014
    Assignee: Thomson Licensing
    Inventors: Zhigang Zhang, Xiao Jun Ma, Linxiang Cheng, Xian Lei Wang, Yanfeng Zhang
  • Patent number: 8895603
    Abstract: Novel crystalline forms of (2R,3S,5R)-2-(2,5-Difluorophenyl)-5-[2-(methylsulfonyl)-2,6-dihydropyrrolo[3,4-c]pyrazol-5(4H)-yl]tetrahydro-2H-pyran-3-amine are potent inhibitors of dipeptidyl peptidase-IV and are useful for the treatment of non-insulin dependent (Type 2) diabetes mellitus. The invention also relates to pharmaceutical compositions containing these novel forms, processes to prepare these forms and their pharmaceutical compositions as well as uses thereof for the treatment of Type 2 diabetes.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: November 25, 2014
    Assignees: Merck Sharp & Dohme Corp., Merck Sharp & Dohme Ltd.
    Inventors: Itzia Arroyo, Davida Krueger, Ping Chen, Aaron Moment, Tesfaye Biftu, Faye Sheen, Yanfeng Zhang
  • Publication number: 20140322120
    Abstract: A method for preparation of amorphous silica from biomass. The method includes pyrolyzing the biomass under anaerobic conditions to yield a pyrolysis gas and solid residues, collecting the pyrolysis gas, and calcining the solid residues under aerobic conditions to yield amorphous silica.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 30, 2014
    Inventors: Yanfeng ZHANG, Minxia CAO, Hong LI, Qi RAO
  • Publication number: 20140306161
    Abstract: A gasifier, including a vertically disposed furnace body, a monitoring unit, and a microwave plasma generating device. The furnace body includes a material and fuel inlet, a syngas outlet, an oxygen/vapor inlet, and a slag outlet. The furnace body has a clearance zone in an upper part thereof and a fixed bed zone in a lower part thereof. The slag outlet is disposed at the bottom of the furnace body. The monitoring unit is disposed close to the syngas outlet. At least one microwave plasma generating device is disposed on the furnace body.
    Type: Application
    Filed: June 25, 2014
    Publication date: October 16, 2014
    Inventors: Yilong CHEN, Yanfeng ZHANG, Minggui XIA, Liang ZHANG
  • Publication number: 20140305900
    Abstract: The invention provides transient devices, including active and passive devices that physically, chemically and/or electrically transform upon application of at least one internal and/or external stimulus. Incorporation of degradable device components, degradable substrates and/or degradable encapsulating materials each having a programmable, controllable and/or selectable degradation rate provides a means of transforming the device. In some embodiments, for example, transient devices of the invention combine degradable high performance single crystalline inorganic materials with selectively removable substrates and/or encapsulants.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 16, 2014
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: John A. ROGERS, Seung-Kyun KANG, SukWon HWANG, Jianjun CHENG, Yanfeng ZHANG, Hanze YING
  • Publication number: 20140306160
    Abstract: A microwave plasma based entrained flow gasifier of biomass, including a furnace body and a fuel pretreatment system. The furnace body includes a fuel inlet disposed at the lower part of the furnace body, a syngas outlet disposed at the top of the furnace body, and a slag outlet disposed at the bottom of the furnace body. The fuel inlet presents in the form of nozzles. The fuel pretreatment system is disposed outside of the furnace body, and includes a fuel crushing apparatus, a sieving apparatus disposed downstream to the fuel crushing apparatus, a first fuel container for receiving particle size-qualified fuel, a second fuel container for receiving particle size-unqualified fuel, and a feeding hopper disposed downstream to the first fuel container. The first fuel container and the second fuel container are disposed side-by-side downstream to the sieving apparatus.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 16, 2014
    Inventors: Yilong CHEN, Yanfeng ZHANG, Minggui XIA, Liang ZHANG
  • Publication number: 20140305044
    Abstract: A method for cooling and washing biomass syngas, the method including the following steps: 1) introducing biomass syngas having a temperature of between 1000 and 1100° C., a dust content of less than 20 g/Nm3, and a tar content of less than 3 g/Nm3 to a quench tower for condensing a slag; 2) introducing the biomass syngas after slag condensation to a waste heat boiler for recovering waste heat and condensing a heavy tar in the syngas; 3) introducing the biomass syngas from the waste heat boiler to a scrubbing-cooling tower for removing dust and decreasing a temperature of the syngas; and 4) introducing the biomass syngas after dust removal and temperature decrease from the scrubbing-cooling tower to an electro-precipitator for further removal of the dust and the tar.
    Type: Application
    Filed: June 27, 2014
    Publication date: October 16, 2014
    Inventors: Yanfeng ZHANG, Wenyan LIU, Minggui XIA, Liang ZHANG
  • Publication number: 20140305043
    Abstract: A method of gasification of biomass using a gasification island. The gasification island includes: a biomass pre-treatment and storage unit, a biomass feeder, an external heat source, a gasifier, a crude syngas cooling unit, a crude syngas washing unit, a fresh syngas storage unit, and an ash and wastewater treatment unit. The method includes: pre-treating and storing biomass, gasifying the biomass in the gasifier, cooling a crude syngas, washing and removing dust from the crude syngas, and storing fresh syngas.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventors: Yanfeng ZHANG, Minggui XIA, Hongtao NIE, Wenyan LIU, Liang ZHANG
  • Publication number: 20140305784
    Abstract: A gasifier including a vertically disposed furnace body, a feeder disposed in a middle part of the furnace body and communicating with the furnace body, one or two layers of microwave plasma generators, an external heater configured to supply external thermal energy for the gasifier, and a monitoring unit. The furnace body includes an upper nozzle for spraying vapor, a lower nozzle for spraying CO2/vapor, a syngas outlet disposed at a top of the furnace body. The upper nozzle for spraying vapor is disposed in a clearance zone of the furnace body, and the lower nozzle for spraying CO2/vapor is disposed in a bed zone of the furnace body. The monitoring unit is disposed close to the syngas outlet. The one or two layers of microwave plasma generators are disposed above the upper nozzle in the clearance zone of the gasifier.
    Type: Application
    Filed: June 25, 2014
    Publication date: October 16, 2014
    Inventors: Yilong CHEN, Yanfeng ZHANG, Minggui XIA, Liang ZHANG
  • Publication number: 20140301929
    Abstract: A method for collecting carbon dioxide from flue gas of a power plant. The method includes: 1) mixing an organic amine, an ionic liquid, and water to obtain an aqueous solution of a composite absorbent; 2) spraying the aqueous solution of the composite absorbent into the flue gas to allow the flue gas flowing upwardly to fully contact with the downwardly sprayed aqueous solution of the composite absorbent and to allow CO2 in the flue gas to react with the composite absorbent to yield a solution rich in A.CO2 and B.CO2, where A represents the organic amine and B represents the ionic liquid; allowing the solution rich in A.CO2 and B.CO2 to stand and clarify to form different liquid layers; 3) thermally decomposing the mixed solution rich in A.CO2 and B.CO2 after heat exchange to release the chemically bound CO2.
    Type: Application
    Filed: June 23, 2014
    Publication date: October 9, 2014
    Inventors: Zhilong WANG, Yanfeng ZHANG