Patents Assigned to Beijing University of Chemical Technology
  • Patent number: 11067596
    Abstract: A method for calibrating phase-frequency characteristics of low frequency accelerometer based on time-spatial synchronization, comprises: measuring excitation displacement of the low frequency accelerometer to realize excitation acceleration measurement of the low frequency accelerometer; realizing alignment of the excitation acceleration signal of the low frequency accelerometer with output voltage signal of the low frequency accelerometer in the spatial domain based on TSS technology, fitting the excitation acceleration signal and the output voltage signal respectively by SAM, and calculating phase ?F of the excitation acceleration signal at a zero position of horizontal long-stroke shaker and phase ?Z of the output voltage signal at the time when a zero encoder on the shaker outputs pulse; and calculating the sensitivity phase of the low frequency accelerometer with ?Z and ?F, and determining phase-frequency characteristics of the low frequency accelerometer by calibrating the sensitivity phases at differe
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: July 20, 2021
    Assignees: National Institute of Metrology, Beijing University of Chemical Technology
    Inventors: Chenguang Cai, Ming Yang, Zhihua Liu, Hao Cheng, Cuiyun Jin
  • Publication number: 20210214531
    Abstract: The present disclosure relates to gutta-percha containing carbon nanotubes and a preparation method therefor. The gutta-percha is prepared by mixing a raw material, prepared from the following components of eucommia ulmoide gum, zinc oxide and carbon nanotubes, and extruding the mixed raw material. An orientation factor of the carbon nanotubes in the gutta-percha is greater than 10.8. The preparation method comprises: mixing the components according to dosages, and extruding a mixed product to prepare the gutta-percha containing carbon nanotubes.
    Type: Application
    Filed: March 30, 2021
    Publication date: July 15, 2021
    Applicants: Beijing University of Chemical Technology, Peking University Hospital of Stomatology
    Inventors: Jichuan ZHANG, Mengjie DONG, Li LIU, Xiubo QU, Xiaoyan WANG, Chongyang YUAN, Yang YU
  • Publication number: 20210140431
    Abstract: A load identification method for reciprocating machinery based on information entropy and envelope features of an axis trajectory of a piston rod. According to the present disclosure, firstly, the position of an axial center is calculated according to a triangle similarity theorem to obtain an axial center distribution; secondly, features are extracted from the axial center distribution of the piston rod by means of an improved envelope method for discrete points as well as an information entropy evaluation method; thirdly, a dimensionality reduction is carried out on the features by means of manifold learning to form a set of sensitive features of the load; and finally, a neural network is trained to obtain a load identification classifier to fulfill automatic identification on the operating load of the reciprocating machinery. The advantages of the present disclosure are verified by means of actual data of a piston rod of a reciprocating compressor.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 13, 2021
    Applicant: Beijing University of Chemical Technology
    Inventors: Jinjie Zhang, Zhinong Jiang, Xudong Zhang, Zhiwei Mao, Yao Wang
  • Patent number: 10913052
    Abstract: The purpose of the invention is to provide a supported bimetallic core-shell structure catalyst and its preparation method. Supporter, metal salt and reducing agent solution are mixed to synthesize the catalyst M@PdM/ZT by using a one-step synthesis method, wherein the active metal particle M@PdM as core-shell structure, M Is the core representing one of the Ag, Pt, Au and Ir. ZT is the supporter, representing one of hydrotalcite (Mg2Al-LDH), alumina (Al2O3) and silica (SiO2). By changing the temperature and the reaction time to control the kinetic behavior of the reduction of two kinds of metal ions to realize the construction of core-shell structure. Active metal particle composition and shell thickness are regulated by controlling metal ion concentration. The bimetallic core-shell catalyst prepared by this method showed excellent selectivity and stability in acetylene selective hydrogenation and anthraquinone hydrogenation.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: February 9, 2021
    Assignee: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Dianqing Li, Rui Ma, Yufei He, Yongjun Feng, Junting Feng
  • Patent number: 10864521
    Abstract: The present invention relates to a detection mechanism for polymerase chain reaction and a polymerase chain reaction device, wherein the detection mechanism comprises at least one excitation module group, each of the excitation module groups comprising two excitation modules for providing excitation light with two wavelengths; an excitation optical fiber, connected to the excitation modules, the excitation optical fiber transmitting the excitation light to at least one reaction tube, each of the reaction tubes receiving excitation light with two wavelengths; a receiving optical fiber, for collecting and transmitting a fluorescent signal from the reaction tube; at least one receiving module group, connected to the receiving optical fiber, each of the receiving module groups comprising two receiving modules, to respectively receive the fluorescent signal of two wavelengths from the same said reaction tube, and convert the fluorescent signal into an electrical signal for output; the detection mechanism is config
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: December 15, 2020
    Assignees: Beijing Wantai Biological Pharmacy Enterprise Co., Ltd., Beijing University of Chemical Technology, Xiamen University
    Inventors: Xianbo Qiu, Xiangzhong Ye, Shengxiang Ge, Shiyin Zhang, Pengfei Gao, Shangzhi Ji, Yongliang Yang, Zixin Qiu, Ningshao Xia
  • Patent number: 10780390
    Abstract: Provided are a gas phase oxidation/decomposition and absorption integrated device and application thereof in a gas-liquid system. The device comprises a housing (100), a motor (102), and a boost regulator (103); the housing (100) is internally provided with a rotating chamber (120) and a discharge chamber (122); the rotating chamber (120) comprises a rotating shaft (119), a turntable (124), a liquid distributor (123), packing layers (110), a guiding round table (111), a liquid inlet (108), a liquid outlet (112), and a first gas outlet (109); the discharge chamber (122) is located under the rotating chamber (120) and comprises a discharge chamber housing (121) and a plasma generator.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: September 22, 2020
    Assignee: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Guangwen Chu, Yong Cai, Jianfeng Chen, Yong Luo, Haikui Zou, Baochang Sun
  • Patent number: 10556845
    Abstract: Disclosed are a system device for preparing an alkylate oil using a sulfuric acid catalyst and a manufacturing method thereof. The system device comprises a reactor unit (100), a catalyst and hydrocarbon circulation unit (200), a separator unit (300), an isobutane circulation unit (500) and a fractionator unit (400). The reactor unit (100) is connected and in communication with the catalyst and hydrocarbon circulation unit (200) and the separator unit (300) via channels respectively. The catalyst and hydrocarbon circulation unit (200) is connected and in communication with the separator unit (300) via channels. The separator unit (300) is connected and in communication with the isobutane circulation unit (500) and the fractionator unit (400) via channels respectively. The catalyst and hydrocarbon circulation unit (200), the separator unit (300), the isobutane circulation unit (500) and the fractionator unit (400) are connected and in communication with the reactor unit (100) via channels respectively.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: February 11, 2020
    Assignee: Beijing University of Chemical Technology
    Inventors: Haikui Zou, Guangwen Chu, Jianfeng Chen, Yong Luo, Baochang Sun, Yang Xiang
  • Publication number: 20200038804
    Abstract: Provided are a gas phase oxidation/decomposition and absorption integrated device and application thereof in a gas-liquid system. The device comprises a housing (100), a motor (102), and a boost regulator (103); the housing (100) is internally provided with a rotating chamber (120) and a discharge chamber (122); the rotating chamber (120) comprises a rotating shaft (119), a turntable (124), a liquid distributor (123), packing layers (110), a guiding round table (111), a liquid inlet (108), a liquid outlet (112), and a first gas outlet (109); the discharge chamber (122) is located under the rotating chamber (120) and comprises a discharge chamber housing (121) and a plasma generator.
    Type: Application
    Filed: April 16, 2018
    Publication date: February 6, 2020
    Applicant: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Guangwen CHU, Yong CAI, Jianfeng CHEN, Yong LUO, Haikui ZOU, Baochang SUN
  • Patent number: 10526424
    Abstract: The present invention discloses a method for preparing high-performance tread rubber through a filler silylation reaction catalyzed in situ by an ionic liquid. The method is as follow: adding a gum rubber, a filler, a silane and an ionic liquid successively into an open mill or an internal mixer for mixing to obtain a rubber compound; high-temperature remilling the rubber compound; adding a vulcanizing package and an anti-aging agent into the remilled rubber compound at room temperature; and vulcanizing the rubber compound to obtain a vulcanized rubber.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: January 7, 2020
    Assignees: SOUTH CHINA UNIVERSITY OF TECHNOLOGY, BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, JIAXING BEIHUA POLYMER ADDITIVES CO., LTD., BEIJING RED AVENUE INNOVA CO., LTD.
    Inventors: Baochun Guo, Jing Huang, Zhenghai Tang, Liqun Zhang, Yonglai Lu, Minli Sun, Qinghua Zhang, Ning Zhang, Dong Dong
  • Patent number: 10500637
    Abstract: The invention discloses a silver-chromium alloy nanowire having a diameter of 18 to 60 nm, a length of 5 to 100 ?m, wherein a molar ratio of the silver to chromium is 1:0.01-3. The preparation method of the silver-chromium alloy nanowire comprises the steps of: a. preparing a reaction solution: formulating a silver source, a chromium source, polyvinylpyrrolidone and a reductive agent into a reaction solution, or adding the materials into deionized water to formulate a reaction solution; and b. performing a reductive reaction: performing a reductive reaction by maintaining the reaction vessel at a temperature of 120° C. to 200° C. for 2-10 hours to obtain a silver-chromium alloy nanowire suspension. The minimum diameter of the silver-chromium alloy nanowire of the present invention may reach 18 nm and its length is usually 20 ?m or above. Thus, it has a broad application prospect.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: December 10, 2019
    Assignee: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Xiaoming Sun, Cheng Wang
  • Patent number: 10344400
    Abstract: A melt differential electrospinning device and process, the melt differential electrospinning device comprising a spinning nozzle (1), a fiber receiving device (3), a first high-voltage electrostatic generator (6), a second high-voltage electrostatic generator (7), a grounding electrode (5), and n layers of electrode plates of a first electrode plate (2) and a second electrode plate (4), n being an integer greater than or equal to 2; the spinning nozzle comprises a splitter plate (21), a nut (22), a spring spacer (23), an air pipe positioning pin (24), a screw (25), a nozzle body positioning pin (26), a nozzle body (27), an air pipe (28), a heating device (29), a temperature sensor (210) and an inner cone nozzle (211).
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: July 9, 2019
    Assignee: Beijing University of Chemical Technology
    Inventors: Weimin Yang, Haoyi Li, Zhiwei Jiao, Xiangfeng Zhong, Hua Yan, Pengcheng Xie, Ying An, Yumei Ding, Jing Tan, Hongbo Chen
  • Patent number: 10315160
    Abstract: An integrated purification method and an integrated purification system for an industrial exhaust gas containing cyanides, hydrocarbons and NOx. The method comprises the steps of: 1) subjecting the exhaust gas containing pollutants such as cyanides, hydrocarbons and nitrogen oxides (NOx) to a gas-liquid separation device (1) to separate the free fluid, then mixing with the air blown by the air blower (201, 202), and preheating by the heating unit; 2) the mixture entering into the selective catalytic combustion (SCC) reactor (5) for the selective catalytic combustion reaction to convert harmful substances into CO2, H2O and N2, the catalysis being performed in two stages: the earlier stage is catalyzed by supported molecular sieve catalyst, and the latter stage is catalyzed by supported precious metal catalyst; and 3) the gas came out from the SCC reactor (5) entering into the heating unit to recover the heat, and then the purified exhaust gas being discharged directly through the chimney (6).
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: June 11, 2019
    Assignee: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Biaohua Chen, Runduo Zhang, Jie Zhang, Dongjun Shi, Yingxia Li
  • Publication number: 20190112458
    Abstract: A solution polymerized styrene-butadiene rubber-polyurethane elastomer material and a preparation method thereof are provided. The elastomer material is prepared by performing cast molding on a soft segment and a hard segment in a mass ratio of 100:(20-50); the soft segment includes hydroxyl-terminated solution polymerized styrene-butadiene moiety rubber prepared by an anionic polymerization; the hard segment comprises isocyanate, a small-molecule polyol chain extender and a cross-linking agent; and the soft segment has a molecular weight of 1000-8000 and a glass-transition temperature of ?20° C. to ?30° C.
    Type: Application
    Filed: November 20, 2018
    Publication date: April 18, 2019
    Applicants: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, RED AVENUE NEW MATERIALS GROUP CO., LTD.
    Inventors: Liqun ZHANG, Xuan QIN, Bingyong HAN, Lixin MAO, Xiaohui WU, Jun LIU, Ning ZHANG, Dong DONG
  • Patent number: 10135100
    Abstract: A method for recovering lead oxide from a pre-desalted lead paste, comprising the following steps: a. dissolving the pre-desalted lead plaster by using a complexing agent solution, and making all of PbO therein react with the complexing agent to generate lead complexing ions, obtaining a lead-containing solution and a filter residue; b. adding a precipitant to the lead-containing solution, and then the precipitant reacting with the lead complexing ions to generate a lead salt precipitate and the regenerated complexing agent; c. calcining the lead salt precipitate to obtain lead oxide and regenerate the precipitant. The final recovery rate of lead oxide of the method can reach 99% or more.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: November 20, 2018
    Assignee: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Junqing Pan, Yaru Bian, Yanzhi Sun, Yinjian Niu
  • Patent number: 10120106
    Abstract: The present invention is related to a method for preparing VIB Group metal oxide particles or dispersions, wherein the VIB Group metal is tungsten or molybdenum. The methods include: 1) providing precursors of VIB Group metal oxide, reductants and supercritical fluids. 2) said VIB Group metal oxide particles, or dispersions are obtained by the reaction between said metal oxide precursors, and reductants are under supercritical state in said supercritical fluids. Especially, said VIB Group metal oxide can be tungsten bronze, molybdenum bronze, or tungsten and molybdenum bronze which can be present by the formula AxByMOz. Wherein, A represents element exists in the form of dopant cation; and B represents element exists in the form of dopant anion; O represents oxygen; 0?x?1, 0?y?1, 0<x+y?1, and 2?z?3.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: November 6, 2018
    Assignees: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, CHANGZHOU INSTITUTE OF ADVANCED MATERIAL OF BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Zhigang Shen, Jimmy Sung Lai Yun, Jianfeng Chen, Xiaofei Zeng
  • Patent number: 10086401
    Abstract: Disclosed is a transparent, flame-retardant thermally-insulating, UV-blocking polymer composite film, comprising sequentially from the top: a flame retardant layer, a base layer, a thermal insulation layer, and a UV-blocking layer, having a total film thickness of 1 ?m to 500 ?m, visible light transmittance greater than 80%, UV light transmittance less than 1%, and near-infrared transmittance less than 10%. Also disclosed is a preparation method for the present transparent, flame retardant thermally-insulating, UV-blocking polymer composite film, the technical processes whereof are simple and easy to execute, involve low production costs, and are suitable for industrial mass production.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: October 2, 2018
    Assignees: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, CHIZHOU ENP TECHNOLOGY CO., LTD.
    Inventors: Jianfeng Chen, Xiaofei Zeng, Jiexin Wang, Jianbo Sun, Xingwei Han
  • Patent number: 10016727
    Abstract: The present invention relates to a method for extracting magnesium and lithium and also producing layered double hydroxides (LDH) from brine, comprising the steps of: adding an aluminum salt to brine, to prepare a mixed salt solution A for preparing MgAl-LDH; adding an alkaline solution to carry out co-precipitation, followed by crystallization; after the crystallization is complete, performing solid-liquid separation to obtain a solid product of MgAl-LDH and a filtrate; concentrating the filtrate by evaporation to obtain a lithium-rich brine, adding an aluminum salt thereto to prepare a mixed salt solution B for preparing LiAl-LDH; adding the mixed salt solution B to an alkaline solution to carry out precipitation; after the precipitation is complete, performing solid-liquid separation to obtain a solid product of LiAl-LDH and a filtrate; and concentrating the filtrate by evaporation, returning the solution concentrated by evaporation to the lithium-rich brine for recycled use.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: July 10, 2018
    Assignee: Beijing University of Chemical Technology
    Inventors: Xu Xiang, Ruirui Wang, Xue Duan
  • Publication number: 20180169753
    Abstract: The invention provides an aluminum nanosheet, having an equivalent diameter of 50 to 1000 nm, and a thickness of 1.5 to 50 nm. The invention further provides a method for preparing the aluminum nanosheet and the use thereof as a two-photon light emitting material or a Raman enhanced material.
    Type: Application
    Filed: November 12, 2017
    Publication date: June 21, 2018
    Applicant: Beijing University of Chemical Technology
    Inventors: Xiaoming SUN, Liang LUO, Yang LI
  • Publication number: 20180141116
    Abstract: The invention discloses a silver-chromium alloy nanowire having a diameter of 18 to 60 nm, a length of 5 to 100 ?m, wherein a molar ratio of the silver to chromium is 1:0.01-3. The preparation method of the silver-chromium alloy nanowire comprises the steps of: a. preparing a reaction solution: formulating a silver source, a chromium source, polyvinylpyrrolidone and a reductive agent into a reaction solution, or adding the materials into deionized water to formulate a reaction solution; and b. performing a reductive reaction: performing a reductive reaction by maintaining the reaction vessel at a temperature of 120° C. to 200° C. for 2-10 hours to obtain a silver-chromium alloy nanowire suspension. The minimum diameter of the silver-chromium alloy nanowire of the present invention may reach 18 nm and its length is usually 20 ?m or above. Thus, it has a broad application prospect.
    Type: Application
    Filed: June 4, 2015
    Publication date: May 24, 2018
    Applicant: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Xiaoming SUN, Cheng WANG
  • Publication number: 20180142042
    Abstract: The present invention discloses a method for preparing high-performance tread rubber through a filler silylation reaction catalyzed in situ by an ionic liquid. The method is as follow: adding a gum rubber, a filler, a silane and an ionic liquid successively into an open mill or an internal mixer for mixing to obtain a rubber compound; high-temperature remilling the rubber compound; adding a vulcanizing package and an anti-aging agent into the remilled rubber compound at room temperature; and vulcanizing the rubber compound to obtain a vulcanized rubber.
    Type: Application
    Filed: April 20, 2016
    Publication date: May 24, 2018
    Applicants: SOUTH CHINA UNIVERSITY OF TECHNOLOGY, BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, JIAXING BEIHUA POLYMER ADDITIVES CO., LTD., BEIJING RED AVENUE INNOVA CO., LTD.
    Inventors: Baochun GUO, Jing HUANG, Zhenghai TANG, Liqun ZHANG, Yonglai LU, Minli SUN, Qinghua ZHANG, Ning ZHANG, Dong DONG