Patents by Inventor QILONG REN
QILONG REN 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).
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Publication number: 20230257328Abstract: A method for separating mixed xylene includes steps that the mixed xylene is subjected to adsorption separation by means of an adsorbent having a metal organic framework material, so that one or more of xylene isomers are separated out. An organic ligand in the metal organic framework material is 2,5-dihydroxy-1,4-benzoquinone. Xylene isomers can be effectively separated using this method.Type: ApplicationFiled: February 3, 2021Publication date: August 17, 2023Inventors: Zongbi BAO, Liangying LI, Qilong REN, Lidong GUO, Qiwei YANG, Zhiguo ZHANG, Yiwen YANG
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Publication number: 20220401911Abstract: The present invention discloses a coal-to-acetylene plasma reactor having coking inhibition and online decoking functions, comprising a vertically arranged cathode rod, an anode and a circulating cooling water jacket arranged outside the anode, the anode includes from top to bottom an anode of the electric arc operation section for cooperating with the cathode rod to generate an electric arc, and an anode of the reaction section located below the electric arc, the anode is grounded, the inner diameter of the anode of the reaction section is 1.2 to 10 times the inner diameter of the anode of the electric arc operation section, and the junction of the anode of the reaction section and the anode of the electric arc operation section is circumferentially provided with a decoking nozzle that can spray a decoking medium toward the anode of the reaction section.Type: ApplicationFiled: September 24, 2020Publication date: December 22, 2022Inventors: QIWEI YANG, GUANGDONG WEN, QILONG REN, MING ZHANG, RULONG LI, JIANHUA WU, ZHONGBIAO WU, XINZHI CHEN, FENGQIU CHEN, CHAOHONG HE
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Patent number: 11530174Abstract: The present invention discloses a method for separating propylene, propyne, propane and propadiene from mixed gas, wherein, comprising: a high purity component can be obtained as metal-organic frameworks as adsorbents through adsorptive separation and purification of a mixed gas containing propylene, propyne, propane and propadiene a general structural formula of the metal-organic framework material is [M(C4O4)(H2O)]·1.5H2O, wherein M is metal ions, the metal-organic framework material is a three-dimensional network structure formed by transition metal ions or alkaline earth metal ions and squaric acid through coordination bonds or intermolecular forces. The metal-organic framework materials of the present invention exhibit excellent adsorption and separation performances for propylene, propyne, propane and propadiene. The cheap and available raw materials for the synthesis, simple operation, and low cost make it cost-efficient for preparation of such metal-organic frameworks.Type: GrantFiled: October 24, 2019Date of Patent: December 20, 2022Assignee: ZHEJIANG UNIVERSITYInventors: Zongbi Bao, Liangying Li, Qilong Ren, Zhiguo Zhang, Yiwen Yang, Qiwei Yang
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Publication number: 20220002217Abstract: The present invention discloses a method for separating propylene, propyne, propane and propadiene from mixed gas, wherein, comprising: a high purity component can be obtained as metal-organic frameworks as adsorbents through adsorptive separation and purification of a mixed gas containing propylene, propyne, propane and propadiene a general structural formula of the metal-organic framework material is [M(C4O4)(H2O)].1.5H2O, wherein M is metal ions, the metal-organic framework material is a three-dimensional network structure formed by transition metal ions or alkaline earth metal ions and squaric acid through coordination bonds or intermolecular forces. The metal-organic framework materials of the present invention exhibit excellent adsorption and separation performances for propylene, propyne, propane and propadiene. The cheap and available raw materials for the synthesis, simple operation, and low cost make it cost-efficient for preparation of such metal-organic frameworks.Type: ApplicationFiled: October 24, 2019Publication date: January 6, 2022Inventors: ZONGBI BAO, LIANGYING LI, QILONG REN, ZHIGUO ZHANG, YIWEN YANG, QIWEI YANG
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Patent number: 11214530Abstract: A method for the separation of C4 olefin mixtures using anion-pillared hybrid porous materials as physical adsorbents is provided. The anion-pillared hybrid porous material was constructed by metal ions (M), organic ligand (L), and inorganic anion (A), forming a three-dimensional structure (A-L-M). C4 olefin mixtures contact with hybrid porous materials in certain ways, then each single C4 olefin monomer can be obtained. The pore size of anion-pillared hybrid porous materials and the spatial configurations of the anions within the pores can be fine-tuned and pre-designed. C4 olefins with different size and shape can be efficiently separated by the anion-pillared hybrid porous materials through shape recognition and size-sieving mechanism.Type: GrantFiled: November 27, 2017Date of Patent: January 4, 2022Assignee: ZHEJIANG UNIVERSITYInventors: Huabin Xing, Zhaoqiang Zhang, Qiwei Yang, Qilong Ren, Zongbi Bao
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Publication number: 20210269615Abstract: Disclosed is a method of removing volatile organic compounds from sponges by using supercritical/subcritical fluid, The method includes the following steps: placing the sponge block to be treated in the extraction kettle; feeding the critical flow medium into the extraction kettle; performing extraction under the supercritical or subcritical conditions of the critical flow medium; releasing pressure to normal pressure after extraction; and separating to obtain devolatilized sponge. The volatile removal device used in the disclosure is a supercritical extraction equipment, which can adopt static extraction or dynamic extraction or a combination of the two. CO2 releases pressure in the separating kettle after contacting the sponge to be treated in the device for mass transfer for a certain period, when the static extraction devolatilization is carried out.Type: ApplicationFiled: May 16, 2021Publication date: September 2, 2021Inventors: Qilong Ren, Zongbi Bao, Fuqiang Chen, Zhiguo Zhang, Min Chen, Yiwen Yang, Qiwei Yang
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Publication number: 20200172454Abstract: A method for the separation of C4 olefin mixtures using anion-pillared hybrid porous materials as physical adsorbents is provided. The anion-pillared hybrid porous material was constructed by metal ions (M), organic ligand (L), and inorganic anion (A), forming a three-dimensional structure (A-L-M). C4 olefin mixtures contact with hybrid porous materials in certain ways, then each single C4 olefin monomer can be obtained. The pore size of anion-pillared hybrid porous materials and the spatial configurations of the anions within the pores can be fine-tuned and pre-designed. C4 olefins with different size and shape can be efficiently separated by the anion-pillared hybrid porous materials through shape recognition and size-sieving mechanism.Type: ApplicationFiled: November 27, 2017Publication date: June 4, 2020Inventors: HUABIN XING, ZHAOQIANG ZHANG, QIWEI YANG, QILONG REN, ZONGBI BAO
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Patent number: 10526260Abstract: A method for the adsorption separation of propylene and propyne, comprising selectively adsorbing propyne from a mixed gas of propylene and propyne using an anion-containing metal-organic framework material as an adsorbing agent so as to obtain a purified propylene gas. The anion-containing metal-organic framework material is used as an adsorbing agent in the method, and the adsorbing agent is a kind of highly ordered microporous organic-inorganic hybrid material, with the pore size thereof being adjustable within the range of 0.4-1.2 nm, and the pore volume thereof being adjustable within the range of 0.1-1.2 cm3/g. A large number of anionic active sites and a highly ordered spatial arrangement thereof allow the adsorbing agent to exhibit excellent propyne adsorption properties. Thus, the adsorbing agent has a very high propyne selectivity and adsorption volume.Type: GrantFiled: May 10, 2017Date of Patent: January 7, 2020Assignee: ZHEJIANG UNIVERSITYInventors: Huabin Xing, Xili Cui, Lifeng Yang, Zongbi Bao, Qiwei Yang, Qilong Ren
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Patent number: 10308674Abstract: The present invention discloses a process for preparing L-arabinose from Gum Arabic comprising the steps of catalytical hydrolysis of L-arabinose from gum arabic followed by the purification steps including neutralization using alkali, adsorption bleaching, electrodialysis desalination, adsorption separation of impurities and crystallization, with the absolute purity of L-arabinose up to 98% and the recovery as high as 25%˜29% of material weight. The disclosed process has such advantages as low cost, environmental-friendliness and simple operation, showing promising in industrial production.Type: GrantFiled: May 7, 2015Date of Patent: June 4, 2019Assignee: ZHEJIANG UNIVERSITYInventors: Zongbi Bao, Minhui Huang, Zhiguo Zhang, Qiwei Yang, Baogen Su, Huabin Xing, Qilong Ren, Yiwen Yang
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Patent number: 10301341Abstract: The present invention discloses a process for preparing high-purity raffinose from defatted wheat germ comprising the steps of percolate extraction of raffinose from defatted wheat germ, decoloration by extraction from the abstraction liquid, electrodialysis desalination, impurity removal by simulated moving bed, concentration and crystallization, with the absolute purity of raffinose as high as 98% and the recovery up to 75%. The process is not only reliable and easy to operate, but also easy to realize industrial production and control the parameters.Type: GrantFiled: May 7, 2015Date of Patent: May 28, 2019Assignee: ZHEJIANG UNIVERSITYInventors: Zongbi Bao, Minhui Huang, Shuran Duan, Qianqian Zhou, Zhiguo Zhang, Qiwei Yang, Baogen Su, Huabin Xing, Qilong Ren, Yiwen Yang
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Publication number: 20190010102Abstract: A method for the adsorption separation of propylene and propyne, comprising selectively adsorbing propyne from a mixed gas of propylene and propyne using an anion-containing metal-organic framework material as an adsorbing agent so as to obtain a purified propylene gas. The anion-containing metal-organic framework material is used as an adsorbing agent in the method, and the adsorbing agent is a kind of highly ordered microporous organic-inorganic hybrid material, with the pore size thereof being adjustable within the range of 0.4-1.2 nm, and the pore volume thereof being adjustable within the range of 0.1-1.2 cm3/g. A large number of anionic active sites and a highly ordered spatial arrangement thereof allow the adsorbing agent to exhibit excellent propyne adsorption properties. Thus, the adsorbing agent has a very high propyne selectivity and adsorption volume.Type: ApplicationFiled: May 10, 2017Publication date: January 10, 2019Applicant: Zhejiang UniversityInventors: Huabin XING, Xili CUI, Lifeng YANG, Zongbi BAO, Qiwei YANG, Qilong REN
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Publication number: 20180051047Abstract: The present invention discloses a process for preparing high-purity raffinose from defatted wheat germ comprising the steps of percolate extraction of raffinose from defatted wheat germ, decoloration by extraction from the abstraction liquid, electrodialysis desalination, impurity removal by simulated moving bed, concentration and crystallization, with the absolute purity of raffinose as high as 98% and the recovery up to 75%. The process is not only reliable and easy to operate, but also easy to realize industrial production and control the parameters.Type: ApplicationFiled: May 7, 2015Publication date: February 22, 2018Inventors: ZONGBI BAO, MINHUI HUANG, SHURAN DUAN, QIANQIAN ZHOU, ZHIGUO ZHANG, QIWEI YANG, BAOGEN SU, HUABIN XING, QILONG REN, YIWEN YANG
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Publication number: 20180030077Abstract: The present invention discloses a process for preparing L-arabinose from Gum Arabic comprising the steps of catalytical hydrolysis of L-arabinose from gum arabic followed by the purification steps including neutralization using alkali, adsorption bleaching, electrodialysis desalination, adsorption separation of impurities and crystallization, with the absolute purity of L-arabinose up to 98% and the recovery as high as 25%˜29% of material weight. The disclosed process has such advantages as low cost, environmental-friendliness and simple operation, showing promising in industrial production.Type: ApplicationFiled: May 7, 2015Publication date: February 1, 2018Applicant: ZHEJIANG UNIVERSITYInventors: ZONGBI BAO, MINHUI HUANG, ZHIGUO ZHANG, QIWEI YANG, BAOGEN SU, HUABIN XING, QILONG REN, YIWEN YANG