Patents Assigned to Zhejiang University of Technology
  • Patent number: 10645940
    Abstract: The present invention relates to a method and a device for ship-borne freezing of marine products after treated by highly activated water and nondestructive sensing of ice crystals. Through treating the seawater with atmospheric plasma in a certain atmosphere and introducing the tail gas from plasma reactor into the seawater in tail gas collecting device, the highly activated water is obtained. After cooling by the ship-borne refrigeration system, the cooled highly activated water can be used to cool and sterilize the captured marine products timely. During the following freezing processes, both the ultra-high frequency (UHF) electromagnetic field system and pulsed ultrasonic monitoring system are applied simultaneously, which can not only effectively reduce the size of ice crystals and the juice loss of the frozen products during thawing, but also inhibits the thermal effect of electromagnetic field.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: May 12, 2020
    Assignee: Zhejiang University of Technology
    Inventors: Yuting Ding, Xuxia Zhou, Zhigang Ke, Shulai Liu, Shichen Zhu, Fei Lv, Jianhua Liu
  • Publication number: 20200095511
    Abstract: The present invention relates to a method for preparing low-sulfur biodiesel.
    Type: Application
    Filed: December 28, 2018
    Publication date: March 26, 2020
    Applicant: Zhejiang University of Technology
    Inventors: Yong NIE, Fan XIA, Qinglong XIE, Meizhen LU, Xiaojiang LIANG, Yanbin SU, Jianbing JI
  • Publication number: 20200063060
    Abstract: The present invention provides a method for extracting heat-sensitive Antarctic krill oil comprising the following steps. Firstly, frozen Antarctic krill is thawed and minced; a surfactant is added to the minced Antarctic krill to form a supercritical micelle system; extract the Antarctic krill multiple times after pressurizing and liquefying mixed gases; at the same time, a low-carbon alcohol solvent is added to strip the material in the critical micelle; after the extraction is completed, the extractant is removed; the extraction product and the residue after the extraction are subsequently collected; the heat-sensitive Antarctic krill oil can be obtained by high-speed centrifugal separation of the oil-water mixed extraction product. The present method has the advantages of simple operation, low extraction pressure and high safety. The extraction method of gas pressure liquefaction is completed under low temperature sealing conditions.
    Type: Application
    Filed: August 27, 2019
    Publication date: February 27, 2020
    Applicant: Zhejiang University of Technology
    Inventors: Yuting DING, Xuxia ZHOU, Xia XU, Shulai LIU, Jianhua LIU, Fei LV, Wei HU
  • Publication number: 20190387760
    Abstract: A method for preserving aquatic products at sea includes the following steps: an on-board refrigeration system is used to refrigerate the antifreeze solution, and the antifreeze solution is used as a main cold source, and temperatures at centers of fish bodies drop rapidly to achieve rapid cooling and reduce activity of endogenous enzymes and inhibit proliferation of microorganisms by direct or indirect heat exchange with captured catches. The antifreeze solution contains edible alcohol, propylene glycol, glycerol, calcium chloride, sodium chloride, amino acids, Antarctic krill protein hydrolysate with average molecular weight of 50-100 KDa, surfactant and water, and the mass percentage of each component is as follows: edible alcohol 15%-30%, propylene glycol 10%-30%, glycerol 2%-15%, calcium chloride 1%-10%, sodium chloride 3%-10%, amino acid 0.1%-0.15%, Antarctic krill protein hydrolysate 0.01%-0.3%, surfactant 0.005%-0.5%, and the balance is water.
    Type: Application
    Filed: June 25, 2019
    Publication date: December 26, 2019
    Applicant: Zhejiang University of Technology
    Inventors: Yuting DING, Shulai LIU, Xuxia ZHOU, Jianhua LIU, Fei LV, Jianyou ZHANG, Yanbo WANG, Zhenyu ZHANG
  • Publication number: 20190387773
    Abstract: The present invention discloses an antifreeze solution for food preservation, which comprises edible alcohol, propylene glycol, glycerin, calcium chloride, sodium chloride, amino acid, Antarctic krill protein hydrolysate with an average molecular weight of 50-100 KDa, surfactant and water, wherein the surfactant is one or more of phospholipid, Tween-20, Tween-60, and Tween-80; each component is food grade, and the mass percentage is expressed as follows: alcohol 15-30%, propylene glycol 10-30%, glycerol 2-15%, calcium chloride 1-10%, sodium chloride 3-10%, amino acid 0.1-0.15%, Antarctic krill protein hydrolysate 0.01-0.3%, surfactant 0.005-0.5%, and the balance is water. The antifreeze solution provided by the present invention can lower the freezing point, improve the heat transfer efficiency, inhibit the crystallization of antifreeze solution during the low temperature stirring process and improve the stability of the antifreeze solution.
    Type: Application
    Filed: June 25, 2019
    Publication date: December 26, 2019
    Applicants: Hangzhou Qiandao Lake Development Group Co., Ltd., Zhejiang University of Technology
    Inventors: Yuting DING, Shulai LIU, Zhenyu ZHANG, Jianmin WANG, Guangxi HE, Hongzheng YAO
  • Patent number: 10260059
    Abstract: The disclosure provides a nitrilase from Arabis alpina, which belongs to genus Arabis, family brassicaceae. The disclosure further provides the encoding gene, vector, recombinant bacterial strain, and the application in the manufacturing of (S)-3-cyano-5-methylhexanoic acid. The wet resting cells containing nitrilase Aa-Nit can kinetically resolve racemic IBSN at 1.2 M with a 42% conversion rate in 15 hr and >99% ee value. The disclosure provides a regio- and stereoselective method for the preparation of (S)-3-cyano-5-methylhexanoic acid. This method provides an atom economical, mild, environmental friendly industrial method to manufacture (S)-3-cyano-5-methylhexanoic acid.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: April 16, 2019
    Assignees: Zhejiang University of Technology, Zhejiang Chiral Medicine Chemicals Co. Ltd.
    Inventors: Renchao Zheng, Yuguo Zheng, Qin Zhang, Youming Huang, Jianfeng Weng, Tianchun Liu, Weirong Fan
  • Patent number: 10231465
    Abstract: The present invention relates to a continuous on-board drying method for Antarctic krill and a continuous on-board processing method of shelled Antarctic krill. The drying method includes the following steps: 1) subjecting fishing materials to cleaning, sorting, and dewatering with a vibrating screen; 2) rapidly heating the krill to the temperature of up to 70° C. using infra-red rays; 3) hot-air drying; 4) impurity removal by vacuum; 5) cooling to obtain dried krill. The processing method includes the following steps: a) subjecting fishing materials to cleaning, sorting, and dewatering with a vibrating screen; b) rapidly heating the krill to the temperature of up to 70° C. using infra-red rays; c) hot-air drying; d) subjecting the dried krill to shelling treatment to separate shell from meat, to obtain shelled krill; e) impurity removal by vacuum to obtain shelled krill product.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: March 19, 2019
    Assignee: Zhejiang University of Technology
    Inventors: Yuting Ding, Xuxia Zhou, Shulai Liu, Jianhua Liu, Fei Lv, Shanping Chen, Peicheng Zhao, Jianyou Zhang, Saiqi Gu, Xia Xu, Zhicheng Zheng
  • Patent number: 10081590
    Abstract: A device and a process for producing undecylenic acid methyl ester using methyl ricinoleate as raw material are provided. The device comprises a feed pump, a raw material pre-heater, a microwave catalytic reactor, a microwave generator, a temperature controller and an infrared sensor, a condenser, a product tank and a discharge pump. The feed pump is connected with the raw material pre-heater, which is connected with the inlet of the microwave catalytic reactor. The outlet of the microwave catalytic reactor is connected with the condenser, which is connected to the product tank and the discharge pump. The microwave catalytic reactor is located in the microwave generator, which is connected with the temperature controller and the infrared sensor. The process is as follows: high-purity methyl ricinoleate, used as the raw material, is converted to methyl undecene and heptaldehyde by microwave-assisted pyrolysis process, followed by isolation and purification to produce methyl undecene.
    Type: Grant
    Filed: August 26, 2017
    Date of Patent: September 25, 2018
    Assignee: Zhejiang University of Technology
    Inventors: Yong Nie, Ying Duan, Ruchao Gong, Shangzhi Yu, Meizhen Lu, Jianbing Ji
  • Publication number: 20170355657
    Abstract: A device and a process for producing undecylenic acid methyl ester using methyl ricinoleate as raw material are provided. The device comprises a feed pump, a raw material pre-heater, a microwave catalytic reactor, a microwave generator, a temperature controller and an infrared sensor, a condenser, a product tank and a discharge pump. The feed pump is connected with the raw material pre-heater, which is connected with the inlet of the microwave catalytic reactor. The outlet of the microwave catalytic reactor is connected with the condenser, which is connected to the product tank and the discharge pump. The microwave catalytic reactor is located in the microwave generator, which is connected with the temperature controller and the infrared sensor. The process is as follows: high-purity methyl ricinoleate, used as the raw material, is converted to methyl undecene and heptaldehyde by microwave-assisted pyrolysis process, followed by isolation and purification to produce methyl undecene.
    Type: Application
    Filed: August 26, 2017
    Publication date: December 14, 2017
    Applicant: Zhejiang University of Technology
    Inventors: Yong NIE, Ying DUAN, Ruchao GONG, Shangzhi YU, Meizhen LU, Jianbing JI
  • Publication number: 20170355976
    Abstract: The disclosure provides a nitrilase from Arabis alpina, which belongs to genus Arabis, family brassicaceae. The disclosure further provides the encoding gene, vector, recombinant bacterial strain, and the application in the manufacturing of (S)-3-cyano-5-methylhexanoic acid. The wet resting cells containing nitrilase Aa-Nit can kinetically resolve racemic IBSN at 1.2 M with a 42% conversion rate in 15 hr and >99% ee value. The disclosure provides a regio- and stereoselective method for the preparation of (S)-3-cyano-5-methylhexanoic acid. This method provides an atom economical, mild, environmental friendly industrial method to manufacture (S)-3-cyano-5-methylhexanoic acid.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Applicants: Zhejiang University of Technology, Zhejiang Chiral Medicine Chemicals Co. Ltd.
    Inventors: Renchao ZHENG, Yuguo ZHENG, Qin ZHANG, Youming HUANG, Jianfeng WENG, Tianchun LIU, Weirong FAN
  • Publication number: 20170355975
    Abstract: The disclosure provides a nitrilase from Arabis alpina, which belongs to genus Arabis, family brassicaceae. The disclosure further provides the encoding gene, vector, recombinant bacterial strain, and the application in the manufacturing of (S)-3-cyano-5-methylhexanoic acid. The wet resting cells containing nitrilase Aa-Nit can kinetically resolve racemic IBSN at 1.2 M with a 42% conversion rate in 15 hr and >99% ee value. The disclosure provides a regio- and stereoselective method for the preparation of (S)-3-cyano-5-methylhexanoic acid. This method provides an atom economical, mild, environmental friendly industrial method to manufacture (S)-3-cyano-5-methylhexanoic acid.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Applicants: Zhejiang University of Technology, Zhejiang Chiral Medicine Chemicals Co. Ltd.
    Inventors: Renchao ZHENG, Yuguo ZHENG, Qin ZHANG, Youming HUANG, Jianfeng WENG, Tianchun LIU, Weirong FAN
  • Publication number: 20170158729
    Abstract: The present invention discloses a method for synthesizing 25-hydroxy cholesterol. The method is as below: subjecting 24-dehydrocholesterol derivative as a raw material, which undergoes an addition reaction with a hydroxyl containing reagent in an organic solvent under catalysis, and then hydrolyzing the reaction product and separating to obtain 25-hydroxy cholesterol. The present invention adopts hydroxyl containing reagents such as water, formic acid, acetic acid, propionic acid, butyric acid, benzoic acid, p-methyl benzoic acid to replace the commonly used extremely toxic reagents such as Cr reagent, Hg reagent and polyfluorinated acetone in the prior art. The raw materials of the present invention are easily available, and have low effect on environment. The operation and post treatment are convenient.
    Type: Application
    Filed: May 22, 2015
    Publication date: June 8, 2017
    Applicants: Zhejiang University of Technology, Zhejiang Garden Biochemical High-Tech Co., Ltd, Hangzhou Xiasha Biochemical Tech Co., Ltd
    Inventors: Can JIN, Weike SU, Ziqiang WANG, Jiangang LIU, Bin SUN, Wenhao XU
  • Publication number: 20170058274
    Abstract: The disclosure provides a nitrilase from Arabis alpina, which belongs to genus Arabis, family brassicaceae. The disclosure further provides the encoding gene, vector, recombinant bacterial strain, and the application in the manufacturing of (S)-3-cyano-5-methylhexanoic acid. The wet resting cells containing nitrilase Aa-Nit can kinetically resolve racemic IBSN at 1.2 M with a 42% conversion rate in 15 hr and >99% ee value. The disclosure provides a regio- and stereoselective method for the preparation of (S)-3-cyano-5-methylhexanoic acid. This method provides an atom economical, mild, environmental friendly industrial method to manufacture (S)-3-cyano-5-methylhexanoic acid.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Applicants: Zhejiang University of Technology, Zhejiang Chiral Medicine Chemicals Co. Ltd.
    Inventors: Renchao ZHENG, Yuguo ZHENG, Qin ZHANG, Youming HUANG, Jianfeng WENG, Tianchun LIU, Weirong FAN
  • Publication number: 20150239856
    Abstract: Disclosed in the present invention are 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate shown in formula (I) and the preparation method and use thereof. The preparation method comprises: fully reacting 4-(5-amino-6-hydroxybenzoxazol-2-yl)benzoic acid shown in formula (II) or 4-(5-amino-6-hydroxybenzoxazol-2-yl)carboxamide benzoate, as a raw material, with ammonia in an aqueous solvent, and directly heating the obtained reaction liquid to remove excess ammonia, so as to obtain 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate. The mass of the 4-(5-amino-6-hydroxybenzoxazol-2-yl)ammonium benzoate (ABAA) prepared in the present invention can reach a polymer grade (where the purity is above 99.
    Type: Application
    Filed: February 9, 2013
    Publication date: August 27, 2015
    Applicants: Zhejiang University of technology, Yancheng Dragon Chemical Co., Ltd.
    Inventors: Ningren Jin, Biao He, Jing Jin
  • Patent number: 9027221
    Abstract: A method for manufacturing a compound refractive lens for focusing X-rays in two dimensions. The method includes the following steps: 1) manufacturing a mother lens; 2) manufacturing a daughter lens; and 3) assembling the mother lens and the daughter lens. The assembly of the mother lens and the daughter lens includes: aligning square embedded lens bodies of the daughter lens with square holes of the mother lens, respectively, for allowing the first parabola-shaped holes on the mother lens and the second parabola-shaped holes on the daughter lens to form an orthogonal structure; and inserting and pressing the square embedded lens bodies into the corresponding square holes, respectively. The method of the invention has advantages of high-precision for manufacturing and calibration of optical axis, and meanwhile the compound refractive lens manufactured based the method has high X-rays focusing efficiency.
    Type: Grant
    Filed: September 14, 2013
    Date of Patent: May 12, 2015
    Assignee: Zhejiang University of Technology
    Inventors: Zichun Le, Wen Dong
  • Patent number: 8969235
    Abstract: Disclosed are WC/CNT, WC/CNT/Pt composite material and preparation process therefor and use thereof. The WC/CNT/Pt composite material comprises mesoporous spherical tungsten carbide with diameter of 1-5 microns, carbon nanotubes and platinum nanoparticles, with the carbon nanotubes growing on the surface of the mesoporous spherical tungsten carbide and expanding outward, and the platinum nanoparticles growing on the surfaces of the mesoporous spherical tungsten carbide and carbon nanotubes. The WC/CNT composite material comprises mesoporous spherical tungsten carbide with diameter of 1-5 microns, and carbon nanotubes growing on the surface of the mesoporous spherical tungsten carbide and expanding outward. The WC/CNT/Pt composite material can be used as an electro-catalyst in a methanol flue battery, significantly improving the catalytic conversion rate and the service life of the catalyst.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 3, 2015
    Assignees: Zhejiang University of Technology, Queen's University Belfast
    Inventors: Chun-An Ma, Zhao-Yang Chen, Wen-Feng Lin, You-Qun Chu
  • Publication number: 20140250666
    Abstract: A method for manufacturing a compound refractive lens for focusing X-rays in two dimensions. The method includes the following steps: 1) manufacturing a mother lens; 2) manufacturing a daughter lens; and 3) assembling the mother lens and the daughter lens. The assembly of the mother lens and the daughter lens includes: aligning square embedded lens bodies of the daughter lens with square holes of the mother lens, respectively, for allowing the first parabola-shaped holes on the mother lens and the second parabola-shaped holes on the daughter lens to form an orthogonal structure; and inserting and pressing the square embedded lens bodies into the corresponding square holes, respectively. The method of the invention has advantages of high-precision for manufacturing and calibration of optical axis, and meanwhile the compound refractive lens manufactured based the method has high X-rays focusing efficiency.
    Type: Application
    Filed: September 14, 2013
    Publication date: September 11, 2014
    Applicant: Zhejiang University of Technology
    Inventors: Zichun LE, Wen DONG
  • Publication number: 20140013573
    Abstract: A method for manufacturing a compound refractive lens for focusing X-rays in two dimensions. The method includes the following steps: 1) manufacturing a mother lens; 2) manufacturing a daughter lens; and 3) assembling the mother lens and the daughter lens. The assembly of the mother lens and the daughter lens includes: aligning square embedded lens bodies of the daughter lens with square holes of the mother lens, respectively, for allowing the first parabola-shaped holes on the mother lens and the second parabola-shaped holes on the daughter lens to form an orthogonal structure; and inserting and pressing the square embedded lens bodies into the corresponding square holes, respectively. The method of the invention has advantages of high-precision for manufacturing and calibration of optical axis, and meanwhile the compound refractive lens manufactured based the method has high X-rays focusing efficiency.
    Type: Application
    Filed: September 14, 2013
    Publication date: January 16, 2014
    Applicant: Zhejiang University of Technology
    Inventors: Zichun LE, Wen DONG
  • Publication number: 20130134047
    Abstract: A method for the production of succinic acid and sulfuric acid by paired electrolytic synthesis is disclosed in the present invention. The method is described as following: in cathodic compartment of an electrochemical cell separated with cation exchange membrane, maleic acid or maleic anhydride is used as raw material, sulfuric acid as the cathodic reactant and the supporting electrolyte of the reaction system, succinic acid is thus synthesized by the electro-reduction reaction at cathode. In anodic compartment, the aqueous sulfuric acid solution containing iodide ion is used as electrolyte, iodide ion is anodized to form I2 and I3?. SO2 gas is fed into the circulated anolyte, reacting with I2 and I3? to form sulfuric acid and regenerate iodide ion. Simultaneously the evaporated hydroiodic acid and distilled water are returned to the anolyte circulation system. The cell voltage and the cost of production are reduced significantly.
    Type: Application
    Filed: September 28, 2012
    Publication date: May 30, 2013
    Applicant: Zhejiang University of Technology
    Inventor: Zhejiang University of Technology
  • Patent number: 7344126
    Abstract: The equipment of high-gravity multi-rotors zigzag rotating beds according to the present invention comprises a casing, a gas inlet and a liquid outlet being provided at the bottom of the casing, a gas outlet and a liquid inlet being provided at the top of the casing, a rotating shaft being provided at the center of the casing and going through the top and the bottom of the casing, a plurality of rotors being installed in series on the rotating shaft and being arranged in layers from top to bottom, and a middle feed inlet being provided on the side of the casing and being communicated with zigzag channels. The rotor comprises a mobile disk fixed on the rotating shaft and an immobile disk fixed on the casing, A series of concentric mobile and immobile circular baffle-sheets are fitted on the mobile disk and the immobile disk respectively.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: March 18, 2008
    Assignee: Zhejiang University of Technology
    Inventors: Jianbing Ji, Zhichao Xu, Yunliang Yu