Patents Assigned to NORTH CHINA ELECTRIC POWER UNIVERSITY
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Patent number: 10143963Abstract: The disclosure provides a mercury removal system for a coal-fired power plant comprising: a mercury content monitoring system configured to monitor a mercury concentration in flue gas; a fly ash collecting device configured to collect fly ash from an electrostatic precipitator in the coal-fired power plant; a modifying device configured to be supplied with the collected fly ash and prepare a mercury sorbent from the fly ash; a sorbent injector configured to inject the mercury sorbent into flues of the coal-fired power plant so as to mix and contact with the flue gas in the flue and adsorb the elemental mercury in the flue gas. Thus, the concentration of the mercury pollutant emission is decreased.Type: GrantFiled: December 17, 2015Date of Patent: December 4, 2018Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Yongsheng Zhang, Yongzheng Gu, Jiawei Wang, Zhao Liu, Weiping Pan
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Patent number: 10014086Abstract: Apparatus and method are provided for the treatment of uranium-contaminated soil by using comprehensive joint technology. The apparatus include the pumping system, the electrokinetic remediation system, elution system, remediation-separation system and recharge system. The remediation technologies (i.e. chemical, photolysis and electrokinetic) are used to remedy the uranium-contaminated soil. First, extract uranium from the contaminated areas and make the ionized uranium extract from the soil phase to the solution phase. Then, use the electrokinetic remediation technology to drive uranium enrichment electromigrate to near the anode. Finally, return the repaired-soil and groundwater back to anode area and recharge well, respectively. This comprehensive joint apparatus can reduce the uranium volume in the contaminated soil or water, and recycle the obtained uranium, which are cleaning processes and have no secondary pollution.Type: GrantFiled: April 19, 2015Date of Patent: July 3, 2018Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Hongwei Lu, Lixia Ren, Li He
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Publication number: 20180029020Abstract: The present invention belongs to the flue gas desulfuration field. Specifically, the present invention relates to a supported solid-phase catalyst for oxidizing the by-product magnesium sulfite in a magnesium desulfuration process, and to preparation method and use thereof. The catalyst uses an activated carbon particle as a support, and cobalt nitrate, manganese nitrate, copper nitrate and ferrous nitrate as catalytically active components. The preparation method is as follows: mixing the pre-treated activated carbon support with the catalytically active components, followed by oscillating, standing under microwave irradiation, filtrating, drying, baking, so as to obtain the supported solid-phase catalyst.Type: ApplicationFiled: August 12, 2015Publication date: February 1, 2018Applicant: North China Electric Power University BaodingInventors: Lidong Wang, Juan Wang, Tieyue Qi
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Patent number: 9868114Abstract: The method for preparing fluorine-doped lamellar black TiO2 nanomaterials includes mixing a solution of tetra-n-butyl titanate, n-propanol and hydrofluoric acid together, and then stir the solutions for a period of time. The solution is transferred into an autoclave and reacts at a certain temperature for a period of time. The sample obtained by the reaction is washed and dried. Then, the sample is heated in a protective atmosphere for a period of time so as to produce the fluorine-doped lamellar black TiO2 nanomaterials. This fluorine-doped lamellar black TiO2 owns superior optical absorption and electron transport performances.Type: GrantFiled: July 12, 2016Date of Patent: January 16, 2018Assignee: North China Electric Power UniversityInventors: Meicheng Li, Jiewei Chen, Yancong He, Bixia Xie, Wenjian Liu, Ruike Li
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Publication number: 20170282230Abstract: Apparatus and method are provided for remediating trichloroethylene-polluting soils by integrated rotated migration and PRB. The apparatus includes a device of electrokinetic remediation, a PRB and a device of injection of surface active agents. The main components of the device of electrokinetic remediation and PRB include cathode, anode, electrode chamber and PRB. A liquid injection pipe is installed between various electrodes and PRBs. The operation of each device is controlled by each control system. The disclosure integrated rotated migration and PRB for remediating contaminants. Surface active agents is helpful for dispersing TCE from soil. The arrangement of the electrode and the PRB greatly shortens distances and time of pollutant migration, which accelerate the speed of remediation and reduce post-processing procedures. In the process of treatment, the three technical methods promote each other, and have the advantages of good repair effect, short time, no secondary pollution and easy operation.Type: ApplicationFiled: March 10, 2017Publication date: October 5, 2017Applicant: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: HONGWEI LU, LIXIA REN, LI HE, YIZHONG CHEN, JING LI
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Patent number: 9667066Abstract: The present invention has disclosed a wind power bundling control method after wind power and thermal power are connected to a power grid in the field of electric power system security technology, including regulating wind power output and thermal power output forward or backward; calculating the transient stability margin of the grid, load level index of element and voltage out-of-limit index of busbar after regulating wind power output and thermal power output respectively; calculating wind power/thermal power paying value according to the transient stability margin of the grid, load level index of element and voltage out-of-limit index of busbar after regulating wind power output and thermal power output; if wind power/thermal power paying value is larger than set threshold value, regulating wind power output and thermal power output backward/forward; if wind power/thermal power paying value is smaller than set threshold value, regulating wind power output and thermal power output forward/backward.Type: GrantFiled: April 16, 2014Date of Patent: May 30, 2017Assignees: GANSU ELECTRIC POWER CORPORATION WIND POWER TECHNOLOGY CENTER, STATE GRID GANSU ELETRIC POWER CORPORATION, STATE GRID CORPORATION OF CHINA, NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Ningbo Wang, Wenying Liu, Yanhong Ma, Jiaming Wang, Dan Jin, Cai Liang, Shiyuan Zhou, Xiaodan Wu, Kun Ding, Zilan Zhao, Qiang Zhou, Bin Yang, Jin Li, Peng Xu, Long Zhao, Rundong Ge
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Publication number: 20160159250Abstract: A renewable energy-based hybrid bi-directionally interactive DC traction power supply system includes two traction substations. Each substation includes transformers, rectifiers, bidirectional AC-DC converters, a DC bus, a catenary, a steel rail and a section post. A DC bus between two adjacent traction substations is provided with a DC renewable energy system constructed by an electric vehicle charging-discharging system, a distributed generation and more than one low voltage DC microgrid. The DC renewable energy system is connected to the DC bus between two adjacent traction substations through a high voltage DC bus, thus a DC circular microgrid being formed in a power supply section post. The electric vehicle charging-discharging system is formed by more than one bidirectional DC-DC charging-discharging equipments which are intended for in connection with the power batteries of the electric vehicle.Type: ApplicationFiled: July 26, 2014Publication date: June 9, 2016Applicants: STATE GRID CORPORATION OF CHINA, NORTH CHINA ELECTRIC POWER UNIVERSITY (BAODING), STATE GRID LIAONING ELECTRIC POWER COMPANY LIMITED ECONOMIC RESEARCH INSTITUTEInventors: Ming MENG, Jian LIU, Xiping WANG, Dalong HU, Li JIANG, Yingwei SONG, Yan LIU, Liaoyi NING
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Publication number: 20160154041Abstract: A synchrophaser measurement method applied to a P Class Phasor Measurement Unit (PMU), and is based on the dynamic phasor mathematical model. The method includes providing a low pass digital filter for phasor factors and applying Discrete Fourier Transform, so that the spectrum leakage caused by the dynamic phasor inputs is eliminated, and the raw phasor measurements after the spectrum leakage being eliminated can be obtained. In addition, the dynamic phasor inputs are fitted by using the second order Taylor series and the linear relationship between the measurement errors causing the Discrete Fourier Transform averaging effect and the second order coefficients of the Taylor series is explored. The linear relationship is used to correct for the raw measurement errors under a dynamic condition, and the accurate dynamic phasor measurements can thus be obtained. This measurement method can measure phasor accurately and rapidly under both static and dynamic conditions.Type: ApplicationFiled: April 18, 2014Publication date: June 2, 2016Applicant: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Tianshu BI, Hao LIU
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Patent number: 9249811Abstract: A compressed air energy storage system comprises a high-pressure water apparatus, a low-pressure water apparatus coupled to the high-pressure water apparatus through two channels, wherein a first channel is formed by a pumped hydroelectric power generation unit, a first high-pressure pipe and a first low-pressure pipe and a second channel is formed by a gas-water energy exchange unit, a second high-pressure pipe and a second low-pressure pipe and a compressed gas storage unit coupled to the gas-water energy exchange unit.Type: GrantFiled: March 8, 2013Date of Patent: February 2, 2016Assignee: North China Electric Power UniversityInventor: Tong Jiang
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Publication number: 20150346287Abstract: The disclosure relates to the crossing field between a power transmission of an ultra-high-voltage and a power system simulation, specifically a method for analyzing an operation state of a substation by combining a whole grid model with a local grid model is provided according to the disclosure. The method includes following steps: performing a load flow calculation for the provincial grid to which a ultra-high-voltage line belongs, wherein initial data of the load flow calculation employs a grid model with E format for national power grid dispatching control center; making an equivalent transform for the model, forming an island independently from the provincial grid to which a ultra-high-voltage line belongs, and making a load flow calculation for the island to acquire data of node voltages and line transmission power.Type: ApplicationFiled: January 30, 2015Publication date: December 3, 2015Applicants: NORTH CHINA ELECTRIC POWER UNIVERSITY, STATE GRID CORPORATION OF CHINA (SGCC), STATE GRID SHANXI CHANGZHI POWER SUPPLY COMPANYInventors: Lei DONG, Ye LI, Aizhong TIAN, Xiaoli SHEN, Peng LIU, Chanqiong WANG
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Publication number: 20150310951Abstract: Apparatus and method are provided for the treatment of uranium-contaminated soil by using comprehensive joint technology. The apparatus include the pumping system, the electrokinetic remediation system, elution system, remediation-separation system and recharge system. The remediation technologies (i.e. chemical, photolysis and electrokinetic) are used to remedy the uranium-contaminated soil. First, extract uranium from the contaminated areas and make the ionized uranium extract from the soil phase to the solution phase. Then, use the electrokinetic remediation technology to drive uranium enrichment electromigrate to near the anode. Finally, return the repaired-soil and groundwater back to anode area and recharge well, respectively. This comprehensive joint apparatus can reduce the uranium volume in the contaminated soil or water, and recycle the obtained uranium, which are cleaning processes and have no secondary pollution.Type: ApplicationFiled: April 19, 2015Publication date: October 29, 2015Applicant: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: HONGWEI LU, LIXIA REN, LI HE
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Patent number: 9097470Abstract: An internal liquid separating hood-type condensation head exchange tube, comprising an external heat exchange tube and an internal liquid separating hood disposed in the cavity of the external heat exchange tube and coaxial with the external heat exchange tube. The internal liquid separating hood is a hollow tube with a plurality of micropores or gaps distributed on a wall surface. The condensate formed during the heat exchange is pumped to the internal liquid separating hood in time under the effect of surface tension of the liquid via the micropores or gaps, and then is discharged from the heat exchange tube by the internal liquid separating hood. Vapor is retained to flow in the annular region between the external heat exchange tube and the internal liquid separating hood, so the inner wall of the external heat exchange tube comes into contact with the vapor to the greatest extent.Type: GrantFiled: March 5, 2012Date of Patent: August 4, 2015Assignee: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Hongxia Chen, Jinliang Xu, Wei Wang
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Patent number: 8968550Abstract: Apparatus and method for cleaning chlorobenzenes-contaminated soil and groundwater are provided related to environment protection. The apparatus includes a direct current power supply, permeable reactive barrier (PRB) reaction walls and electrodes, wherein the electrodes are arranged in a polluted area according the concentric circles, and are installed into electrode chambers; the PRB reaction walls are installed at ½ between the anode electrode and the cathode electrode and at ¼ from the anode electrode. Chlorobenzenes in the soil and groundwater can be gathered in the PRB reaction walls through the arrangement of the electrode area; and then the chlorobenzenes can be further removed by oxidation-reduction reactions in the PRB reaction walls.Type: GrantFiled: April 15, 2014Date of Patent: March 3, 2015Assignee: North China Electric Power UniversityInventors: Li He, Jiaqi Zhang, Shichao Sun, Xiaomeng Li, Hongwei Lu
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Patent number: 8926814Abstract: This invention relates to environment protection, and discloses apparatus and method for electrokinetic in-situ leaching remediation of contaminated soil. The apparatus includes a DC electrical source, electrode chambers, electrodes, permeable reactive barriers (PRBs), electrode solution pH testers, electrode solution extraction tubes, a heating pipe network, a heat exchanger, leacheate sprayers, acid-base adjusting solution sprayers, a multichannel peristaltic pump, automatic control devices, an electrode solution storage tank, an electrode solution treatment pond, an in-line pump, single-channel peristaltic pumps, a flowmeter, a time control device, a leacheate storage tank, an acid solution storage tank, an alkali solution storage tank, and soil pH testers.Type: GrantFiled: April 14, 2014Date of Patent: January 6, 2015Assignee: North China Electric Power UniversityInventors: Li He, Jiaqi Zhang, Shichao Sun, Hongwei Lu
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Publication number: 20140360888Abstract: Apparatus and method for cleaning chlorobenzenes-contaminated soil and groundwater are provided related to environment protection. The apparatus includes a direct current power supply, permeable reactive barrier (PRB) reaction walls and electrodes, wherein the electrodes are arranged in a polluted area according the concentric circles, and are installed into electrode chambers; the PRB reaction walls are installed at ½ between the anode electrode and the cathode electrode and at ¼ from the anode electrode. Chlorobenzenes in the soil and groundwater can be gathered in the PRB reaction walls through the arrangement of the electrode area; and then the chlorobenzenes can be further removed by oxidation-reduction reactions in the PRB reaction walls.Type: ApplicationFiled: April 15, 2014Publication date: December 11, 2014Applicant: NORTH CHINA ELECTRIC POWER UNIVERSITYInventors: Li HE, Jiaqi ZHANG, Shichao SUN, Xiaomeng LI, Hongwei LU
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Publication number: 20140339086Abstract: This invention relates to environment protection, and discloses apparatus and method for electrokinetic in-situ leaching remediation of contaminated soil. The apparatus includes a DC electrical source, electrode chambers, electrodes, permeable reactive barriers (PRBs), electrode solution pH testers, electrode solution extraction tubes, a heating pipe network, a heat exchanger, leacheate sprayers, acid-base adjusting solution sprayers, a multichannel peristaltic pump, automatic control devices, an electrode solution storage tank, an electrode solution treatment pond, an in-line pump, single-channel peristaltic pumps, a flowmeter, a time control device, a leacheate storage tank, an acid solution storage tank, an alkali solution storage tank, and soil pH testers.Type: ApplicationFiled: April 14, 2014Publication date: November 20, 2014Applicant: North China Electric Power UniversityInventors: Li HE, Jiaqi ZHANG, Shichao SUN, Hongwei LU
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Patent number: 8857511Abstract: Apparatus and method are provided to restore contaminated groundwater based on in-situ periodic pumping and recharging. The apparatus includes a contaminated groundwater suction system, an in-situ restoration system, and a reinjection system. The suction system includes a suction well and a suction pipeline. The suction system is connected with the in-situ restoration system. The in-situ restoration system is connected with the reinjection system. The reinjection system includes a reinjection pipeline and a reinjection well. Prior to the in-situ restoration, a pumping test for suction well and an injection test for reinjection well are conducted. Through reinjecting the processed contaminated groundwater, this approach is capable of diluting contaminated water layer, reducing the pollutant concentration in the target aquifer, providing convenience for the subsequent processing, and cutting the cost.Type: GrantFiled: April 16, 2014Date of Patent: October 14, 2014Assignee: North China Electric Power UniversityInventors: Li He, Jing Shen, Jiaqi Zhang, Zhentong Li
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Publication number: 20140216022Abstract: A compressed air energy storage system comprises a high-pressure water apparatus, a low-pressure water apparatus coupled to the high-pressure water apparatus through two channels, wherein a first channel is formed by a pumped hydroelectric power generation unit, a first high-pressure pipe and a first low-pressure pipe and a second channel is formed by a gas-water energy exchange unit, a second high-pressure pipe and a second low-pressure pipe and a compressed gas storage unit coupled to the gas-water energy exchange unit.Type: ApplicationFiled: March 8, 2013Publication date: August 7, 2014Applicant: NORTH CHINA ELECTRIC POWER UNIVERSITYInventor: Tong Jiang