Patents by Inventor Chengrong Qin

Chengrong Qin 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: 20220144874
    Abstract: The disclosure provides a method for preparing an amphiphilic lignin nanomaterial based on pulping black liquor, an amphiphilic lignin nanomaterial, and an oil sludge detergent. In the disclosure, physical treatments such as ball milling and high-pressure jet homogenization treatment are conducted on alkali lignin at the early stage to adjust the molecular weight and size of alkali lignin and thus to give alkali lignin nanoparticles with uniform particle sizes; and on this basis, a chemical treatment such as alkylation grafting modification is conducted to give amphiphilic lignin nanoparticles with both hydrophilicity and lipophilicity. Due to the nano-size effect, the amphiphilic lignin nanomaterial has a significantly-increased specific surface area (SSA) and effectively-improved surface properties, which can reduce the oil-water interfacial tension, and emulsify the crude oil and peel off the crude oil from the surface of rock particles, so as to achieve the purpose of oil-solid separation.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 12, 2022
    Inventors: Chengrong QIN, Jian ZHANG, Chen LIANG, Shuangquan YAO, Xinliang LIU, Zhiwei WANG, Wei LI, Jiulong SHA
  • Patent number: 11192812
    Abstract: A phosphorus-based calcification inhibitor (“inhibitor”) configured to prevent calcification of anaerobic granular sludge.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: December 7, 2021
    Inventors: Shuangfei Wang, Jian Zhang, Chengrong Qin, Ling Peng, Peng Gan, Shanshan Zhao, Zhiwei Wang
  • Patent number: 11185796
    Abstract: The present disclosure provides a fast and high-capacity intelligent cellulose-based oil-absorbing material and a preparation method and use thereof. The material includes an intelligent response layer and an adsorption layer. The intelligent response layer is a pH-responsive nanofiber layer with an adjustable pH response performance and is obtained by grafting hyperbranched polycarboxylic acid-modified polyethyleneimine on to carboxylated cellulose nanofibers. The hyperbranched polycarboxylic acid is prepared by melting and polycondensing at a high temperature, using trimethylolpropane as a core, citric acid as a reactive monomer, and p-toluenesulfonic acid as a catalyst. The adsorption layer is prepared by coating ferroferric oxide with the carboxylated cellulose nanofibers to prepare magnetic carboxylated cellulose nanofibers, and then modifying the magnetic carboxylated cellulose nanofibers with hexadecylamine.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: November 30, 2021
    Assignee: GUANGXI UNIVERSITY
    Inventors: Chengrong Qin, Hui He, Lei Wang, Hongxiang Zhu, Chao Zhao, Rimei Chen, Zongyan Quan, Zhiping Chen
  • Patent number: 11045788
    Abstract: The present invention discloses a near-infrared regenerative intelligent fiber-based adsorptive material and a preparation method and use thereof. The material is obtained by chemically grafting a stepwise dual-temperature stimuli-responsive polyethyleneimine onto a carboxylated cellulose nanofiber matrix to prepare a stepwise dual-temperature stimuli-responsive intelligent nanofiber, and combining the stepwise dual-temperature stimuli-responsive intelligent nanofiber with a photosensitizer having near-infrared stimuli-response to prepare a stepwise dual-temperature/near-infrared stimuli-responsive intelligent nanofiber, and then by using a crosslinking agent to directly crosslink and combine the stepwise dual-temperature/near-infrared stimuli-responsive intelligent nanofiber with a hyperbranched polyamine in one step. The material has a stepwise dual-temperature/near-infrared stimuli-response, high density of amino group (greater than 14 mmol/g), and nano cavities.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: June 29, 2021
    Assignee: GUANGXI UNIVERSITY
    Inventors: Hui He, Chengrong Qin, Shuangfei Wang, Rimei Chen, Xiaoyu Shi, Jiehan Lin, Chao Zhao, Qin Lu
  • Patent number: 11045789
    Abstract: The present invention discloses a biomass intelligent fiber-based amphoteric multifunctional adsorptive material and a preparation method and use thereof. The material is obtained by using a stepwise dual-temperature stimuli-responsive biomass intelligent fiber as a matrix, a crown ether-modified amphoteric hyperbranched polyamine as a functional reagent, and by using a crosslinking agent to directly crosslink and combine the stepwise dual-temperature stimuli-responsive biomass intelligent fiber with the crown ether-modified amphoteric hyperbranched polyamine in one step. The material has a stepwise dual-temperature stimuli-response, high densities of amino group (more than 12 mmol/g) and carboxyl group (5 mmol/g), and nano cavities.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: June 29, 2021
    Assignee: GUANGXI UNIVERSITY
    Inventors: Chengrong Qin, Hui He, Hongxiang Zhu, Lei Wang, Hang Zhou, Zongyan Quan, Zhiping Chen
  • Patent number: 10981816
    Abstract: The present invention belongs to the technical field of wastewater treatment, and particularly relates to a method for pre-conditioning high-calcium wastewater by calcification blocking, and a device for implementing the method. The method for treating high-calcium wastewater by calcification blocking includes mixing high-calcium wastewater, an alkalizing agent and a chelating agent, and carrying out alkalizing conditioning pretreatment under a condition of stirring by bubbling of a biogas, so as to obtain pre-conditioned wastewater. The pre-conditioned wastewater is mixed with anaerobic granular sludge, and an anaerobic reaction is performed in a high hydraulic shear flow field formed by the biogas, so as to generate the biogas and calcium scale. A part of the biogas for the stirring is refluxed by bubbling of the biogas and the rest of the biogas is refluxed for forming the high hydraulic shear flow field.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: April 20, 2021
    Assignee: GUANGXI UNIVERSITY COLLEGE OF LIGHT INDUSTRY AND FOOD ENGINEERING
    Inventors: Shuangfei Wang, Jian Zhang, Chengrong Qin, Peng Gan, Shanshan Zhao, Ling Peng, Jingyang Lu, Zhiwei Wang
  • Patent number: 10934199
    Abstract: Embodiments of the present invention pertain to a composite decalcification agent of calcified anaerobic granular sludge and a decalcification regeneration process.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: March 2, 2021
    Assignee: GuangXi University
    Inventors: Shuangfei Wang, Jian Zhang, Chengrong Qin, Ling Peng, Shanshan Zhao, Peng Gan, Zhiwei Wang
  • Patent number: 10927023
    Abstract: A method may add whey to high calcium papermaking industrial wastewater blended and pre-acidification treatment to promote anaerobic reaction and inhibit calcification. The method includes, before anaerobic treatment of papermaking wastewater, mixing whey wastewater with the papermaking wastewater. The method also includes pre-treating the papermaking wastewater by acidification to stabilize the papermaking wastewater prior to entering an anaerobic reaction system.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: February 23, 2021
    Inventors: Shuangfei Wang, Zhiwei Wang, Hui Liu, Chengrong Qin, Chen Liang, Xueping Song, Lianxin Luo, Xinliang Liu, Meiling Li
  • Publication number: 20210032138
    Abstract: A method may add whey to high calcium papermaking industrial wastewater blended and pre-acidification treatment to promote anaerobic reaction and inhibit calcification. The method includes, before anaerobic treatment of papermaking wastewater, mixing whey wastewater with the papermaking wastewater. The method also includes pre-treating the papermaking wastewater by acidification to stabilize the papermaking wastewater prior to entering an anaerobic reaction system.
    Type: Application
    Filed: July 23, 2020
    Publication date: February 4, 2021
    Inventors: Shuangfei WANG, Zhiwei WANG, Hui LIU, Chengrong QIN, Chen LIANG, Xueping SONG, Lianxin LUO, Xinliang LIU, Meiling LI
  • Publication number: 20210032140
    Abstract: A phosphorus-based calcification inhibitor (“inhibitor”) configured to prevent calcification of anaerobic granular sludge.
    Type: Application
    Filed: May 1, 2020
    Publication date: February 4, 2021
    Inventors: Shuangfei WANG, Jian ZHANG, Chengrong QIN, Ling PENG, Peng GAN, Shanshan ZHAO, Zhiwei WANG
  • Publication number: 20210032147
    Abstract: Embodiments of the present invention pertain to a composite decalcification agent of calcified anaerobic granular sludge and a decalcification regeneration process.
    Type: Application
    Filed: May 1, 2020
    Publication date: February 4, 2021
    Inventors: Shuangfei WANG, Jian ZHANG, Chengrong QIN, Ling PENG, Shanshan ZHAO, Peng GAN, Zhiwei WANG
  • Publication number: 20200190676
    Abstract: A graphene ternary composite direct current-carrying plate includes an anode plate and a cathode plate. Placed between the anode plate and the cathode plate is a graphene composite layer. The graphene composite layer is doped with a certain proportion of graphene in the aluminum mesh frame. The plate of the invention has small thickness, low ohmic voltage drop, good porosity, and low current loss. This reduces the electrolysis power consumption, thereby significantly reducing the product cost and effectively promoting the industrial production market of the sodium chlorate electrolysis method. The plate also reduces energy consumption and is environmentally friendly.
    Type: Application
    Filed: February 1, 2019
    Publication date: June 18, 2020
    Inventors: Shuangfei WANG, Yang LIU, Chengrong QIN, ZHAN LEI, Shuangxi NIE, Shuangquan YAO, Chen LIANG, Xinliang LIU, Zhiwei WANG
  • Publication number: 20200194770
    Abstract: The patent provides a method for preparing titanium-based active electrodes with high stability coating layer, which belongs to the field of electrochemistry. The patent describes the active electrode is used titanium as the substrate, multi-metal oxides as the activated catalytic layer, and dense oxides as the protective layer. The multi-metal catalytic layer is formed by pyrolysis method to form the main body of titanium-based catalytic layer, and the dense oxide protective layer is combined with Sol-gel method and electrochemical deposition method to form a dense protective layer of titanium base. It can be widely used in chlor-alkali industry, paper industry, sewage treatment and other fields.
    Type: Application
    Filed: February 1, 2019
    Publication date: June 18, 2020
    Inventors: Shuangfei WANG, Xinliang LIU, Chengrong QIN, Zhan LEI, Shuangxi NIE, Shuangquan YAO, Chen LIANG, Yang LIU, Zhiwei WANG
  • Publication number: 20190345033
    Abstract: A high-purity chlorine dioxide gas may use hydrogen peroxide as a reducing agent and may use horizontal generator, evaporation crystallizer, dryer and other devices to produce chlorine dioxide gas (product) and sodium sulfate (by-product). Compared to the conventional chlorine dioxide preparation system, the chlorine dioxide reaction and the sodium sulfate crystallization are performed in two processes. These processes are relatively separate and independent, and continuously produce chlorine dioxide gas with high purity and low moisture content while the by-product salt cake is evaporated, crystallized, filtered and dried, thereby producing sodium sulfate, without generating solid and liquid waste.
    Type: Application
    Filed: November 6, 2018
    Publication date: November 14, 2019
    Inventors: Shuangfei WANG, Chengrong QIN, Shuangxi NIE, Xueping SONG, Chen LIANG, Xinliang LIU, Zhiwei WANG, HongXiang ZHU
  • Patent number: 10266406
    Abstract: A high-purity chlorine dioxide gas may use hydrogen peroxide as a reducing agent and may use horizontal generator, evaporation crystallizer, dryer and other devices to produce chlorine dioxide gas (product) and sodium sulfate (by-product). Compared to the conventional chlorine dioxide preparation system, the chlorine dioxide reaction and the sodium sulfate crystallization are performed in two processes. These processes are relatively separate and independent, and continuously produce chlorine dioxide gas with high purity and low moisture content while the by-product salt cake is evaporated, crystallized, filtered and dried, thereby producing sodium sulfate, without generating solid and liquid waste.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: April 23, 2019
    Inventors: Shuangfei Wang, Chengrong Qin, Shuangxi Nie, Xueping Song, Chen Liang, Xinliang Liu, Zhiwei Wang, HongXiang Zhu
  • Patent number: 10145017
    Abstract: An efficient electrolysis system for sodium chlorate production may include round or oval cells, reactors, a product pump transfer, a buffer tank, a circulation pump, and explosive clad plate, all of which are connected by way of pipelines. Inlet and the outlet of each cell are separately connected with the reactor via titanium pipes, allowing the electrolyte to recirculate naturally between the cells and the reactors. The outlet of every cell is conical while each reactor includes a standard electrolytic unit with three to eight cells. The electrolytic units are modularly identical and symmetrically linked to the buffer tank. Within each unit, adjacent cells are connected with the explosive clad plates. The buffer tank may be divided into two parts—part A and part B—with part A connecting with the overflow port of the reactor via pipeline, and the part B connecting with the reactor via the circulation pump.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: December 4, 2018
    Inventors: Shuangfei Wang, Chengrong Qin, Xusheng Li, Chen Liang, Xinliang Liu, Zhiwei Wang
  • Patent number: 10106900
    Abstract: An efficient electrolysis system for sodium chlorate production may include round or oval cells, reactors, a product pump transfer, a buffer tank, a circulation pump, and explosive clad plate, all of which are connected by way of pipelines. Inlet and the outlet of each cell are separately connected with the reactor via titanium pipes, allowing the electrolyte to recirculate naturally between the cells and the reactors. The outlet of every cell is conical while each reactor includes a standard electrolytic unit with three to eight cells. The electrolytic units are modularly identical and symmetrically linked to the buffer tank. Within each unit, adjacent cells are connected with the explosive clad plates. The buffer tank may be divided into two parts—part A and part B—with part A connecting with the overflow port of the reactor via pipeline, and the part B connecting with the reactor via the circulation pump.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: October 23, 2018
    Inventors: Shuangfei Wang, Chengrong Qin, Xusheng Li, Chen Liang, Xinliang Liu, Zhiwei Wang
  • Publication number: 20180282883
    Abstract: An efficient electrolysis system for sodium chlorate production may include round or oval cells, reactors, a product pump transfer, a buffer tank, a circulation pump, and explosive clad plate, all of which are connected by way of pipelines. Inlet and the outlet of each cell are separately connected with the reactor via titanium pipes, allowing the electrolyte to recirculate naturally between the cells and the reactors. The outlet of every cell is conical while each reactor includes a standard electrolytic unit with three to eight cells. The electrolytic units are modularly identical and symmetrically linked to the buffer tank. Within each unit, adjacent cells are connected with the explosive clad plates. The buffer tank may be divided into two parts—part A and part B—with part A connecting with the overflow port of the reactor via pipeline, and the part B connecting with the reactor via the circulation pump.
    Type: Application
    Filed: June 6, 2018
    Publication date: October 4, 2018
    Inventors: Shuangfei Wang, Chengrong Qin, Xusheng Li, Chen Liang, Xinliang Liu, Zhiwei Wang
  • Publication number: 20170350022
    Abstract: An efficient electrolysis system for sodium chlorate production may include round or oval cells, reactors, a product pump transfer, a buffer tank, a circulation pump, and explosive clad plate, all of which are connected by way of pipelines. Inlet and the outlet of each cell are separately connected with the reactor via titanium pipes, allowing the electrolyte to recirculate naturally between the cells and the reactors. The outlet of every cell is conical while each reactor includes a standard electrolytic unit with three to eight cells. The electrolytic units are modularly identical and symmetrically linked to the buffer tank. Within each unit, adjacent cells are connected with the explosive clad plates. The buffer tank may be divided into two parts—part A and part B—with part A connecting with the overflow port of the reactor via pipeline, and the part B connecting with the reactor via the circulation pump.
    Type: Application
    Filed: May 8, 2017
    Publication date: December 7, 2017
    Inventors: Shuangfei Wang, Chengrong Qin, Xusheng Li, Chen Liang, Xinliang Liu, Zhiwei Wang
  • Patent number: 9776163
    Abstract: A system for the integral chlorine dioxide production with relatively independent sodium chlorate electrolytic production and chlorine dioxide production is provided. The system may feed electrolyte solution into a solid-liquid filter, filtering out the crystal and eliminating sodium chloride and sodium dichromate. The sodium chlorate crystal may be fed into a chlorine dioxide generator after dissolving, while sodium chloride and sodium dichromate solution separately return to electrolyzer for electrolysis process. Sodium chloride may be constantly formed as a by-product in the chlorine dioxide production unit, and solution containing the sodium chloride is withdrawn from the generator and, after filtration, washing and dissolution, recycled back to sodium chlorate production unit. This way, there is no need of sodium chloride make-up.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: October 3, 2017
    Assignee: GuangXi University
    Inventors: Shuangfei Wang, Chengrong Qin, Xueping Song, Xusheng Li, Shuangxi Nie, Chen Liang