Zhejiang University

Other

Zhongyang Luo

Mengxiang Fang

Qinhui Wang

Chunjiang Yu

Kefa Cen

Mingjiang Ni

Xiang Gao

Jinsong Zhou

Tao Wang

Gang Xiao

Shurong Wang

Leming Cheng

Chenghang Zheng

Zhenglun Shi

Tianfeng Yang

Weihong Wu

Yinchen Wang

Qiang Li

Dian Xu

Yuxing Tang

Min Qiu

Hao Song

Hongmin Yu

Yi Chen Zhong

Xin Zhou

Yongxin Zhang

Wen Yang

Kunzan Qiu

Lemin Cheng

Zuliang Wu

Hengli Zhang

Weishan Liu

Huanlei Liu

Kaixiang Xing

Wenfeng Dong

Jinli Chen

Jianmeng Cen

Shulin Wang

Xinbo Zhu

Disclosed is an energy-saving system and method for direct air capture with precise ion control. The system includes an air conveying device, an air distribution device and a COadsorption device with a moisture swing adsorbent with high COadsorption capacity, where the air conveying device, the air distribution device and the COadsorption device are connected in sequence, and the COadsorption device is provided with a spray desorption device; a valence-state ion sieving device; a pH swing regeneration device; and a COregeneration device. In accordance with the energy-saving system provided by the present disclosure, ultra-low concentration of COin the air can be enriched to the concentration of 95% step by step for industrial application or biological application at room temperature and pressure by consuming the electricity which cannot be connected to a power grid.

Energy-saving system and method for direct air capture with precise ion control

Carbon negative emission methods, a nitrogen oxide ultra-low emission system, an air supply device and a flow control module. The system for use in carbon negative emission methods enables biomass to produce inorganic carbon and pyrolysis gas/gasification gas to realize negative emission of carbon. The nitrogen oxide ultra-low emission system enables fuel to be in mixed combustion with the pyrolysis gas/gasification gas to remove nitrogen oxides, which realizes ultra-low emission of the nitrogen oxides. The air supply device is in communication with a biomass pyrolysis coupling partial gasification and is in communication with the system for use in carbon negative emission methods and the nitrogen oxide ultra-low emission system. The pyrolysis gas/gasification gas enters the nitrogen oxide ultra-low emission system. The flow control module controls a flow ratio of a pyrolysis agent/gasification agent entering the system for use in carbon negative emission methods and flow of the pyrolysis gas/gasification gas and air entering the nitrogen oxide ultra-low emission system.

Control method for a system having reduced nitrogen oxide emissions and for use in a carbon negative emission method

In the technical field of power generation, a method and system for directly and rapidly detectingC of carbon dioxide, which can quickly complete aC activity measurement of carbon dioxide, while further improving uniformity and accuracy for directly and rapidly detectingC of carbon dioxide. The method includes: pressurizing and liquefying gaseous carbon dioxide to obtain liquid carbon dioxide; mixing the liquid carbon dioxide with a cosolvent and a scintillator in a pressure vessel to obtain a mixed solution; and placing the pressure vessel in a liquid scintillation counter for carrying out radiocarbon activity detection.

Method and system for directly and rapidly detectingC of carbon dioxide

A method of preventing high temperature corrosion on a heat exchanging surface of a biomass boiler, including: a first feeding step, supplying a first biomass fuel to the boiler; a deposition step, performing combustion on the first biomass fuel during initial operation of the boiler, and forming an inert deposition layer on a surface of a heat exchanger of the boiler; a second feeding step, supplying a second biomass fuel different from the first biomass fuel to the boiler; and a normal combustion step, performing combustion on the second biomass fuel. A direct contact of an alkali metal chloride with a metal pipe wall is prevented by forming an inert deposition layer on the surface of the heat exchanger of the boiler in the deposition step, thereby establishing a physical barrier between the heat exchanging surface and the alkali metal chloride to prevent corrosion on the metal pipe wall.

Method for inhibiting high temperature corrosion of heat exchange surface of biomass boiler

A system for use in carbon negative emission methods, a nitrogen oxide ultra-low emission system, an air supply device and a flow control module. The system for use in carbon negative emission methods enables biomass to produce inorganic carbon and pyrolysis gas/gasification gas to realize negative emission of carbon. The nitrogen oxide ultra-low emission system enables fuel to be in mixed combustion with the pyrolysis gas/gasification gas to remove nitrogen oxides, which realizes ultra-low emission of the nitrogen oxides. The air supply device is in communication with a biomass pyrolysis coupling partial gasification and is in communication with the system for use in carbon negative emission methods and the nitrogen oxide ultra-low emission system. The pyrolysis gas/gasification gas enters the nitrogen oxide ultra-low emission system. The flow control module controls a flow ratio of a pyrolysis agent/gasification agent entering the system for use in carbon negative emission methods and flow of the pyrolysis gas/gasification gas and air entering the nitrogen oxide ultra-low emission system.

System of ultra-low nitrogen oxide emissions, negative carbon emissions and control method thereof

A turbine for solar thermal power generation and a Brayton cycle are disclosed. The turbine includes a blade which has a cooling working medium inlet and a cooling working medium jet orifice. The blade is provided as a cavity with hollow interior; the cooling working medium inlet is located inside the blade; the cooling working medium jet orifice is provided on the blade surface on which is provided a spectral conversion coating; the spectral conversion coating converts heat on the blade surface into conversion characteristic band radiation which is radiation energy adjacent to cooling working medium characteristic band radiation of a cooling working medium. The turbine adopts a characteristic spectral coating and a jet cooling to enhance the cooling effect for a turbine blade and to improve the system efficiency of the Brayton cycle.

Turbine and brayton cycle including same

The present invention is related a square packed tower for collection of flue gas CO. The square packed tower comprises an initial absorbent distributor on the lower end of the flue gas outlet, a vertical plate packer on the lower end of the initial absorbent distributor and a radial diversion gas distributor at the bottom of the square packed tower for delivery of carbon dioxide contained in the flue gas. The radial diversion gas distributor comprises a gas inlet pipe, a butterfly base plate, a butterfly seal plate and numerous radial deflectors. The butterfly base plate is connected with outlet of the gas inlet pipe. The radial deflectors are in radial arrangement between the butterfly base plate and butterfly seal plate along the outlet of gas inlet pipe.

Square packed tower for capturing flue gas carbon dioxide

AC testing bottle, aC testing device, aC testing method, a sampling and preparation system and its implementation method are provided. TheC testing bottle includes a pressure-bearing shell and a sample bin positioned in the pressure-bearing shell. A cavity is arranged in the sample bin and theC testing bottle is provided with an injection port connected to the cavity. The sample bin may diffuse the light produced in the cavity and at least part of the sample bin is transparent. An optical fiber channel is set on the pressure-bearing shell. One end of the optical fiber channel is connected with an external scintillation counter, and the other end of the optical fiber channel is connected with the transparent part of the sample bin. TheC testing bottle may measure theC content in the carbon dioxide sample rapidly.

14C testing bottle, testing device and method, sampling and preparation system and method

A dual-cavity method and device for collecting and storing solar energy with metal oxide particles. Solar radiation irradiates into a light receiving cavity of a dual-cavity, heat-collecting reactor to heat a separating plate and preheat metal oxide particles. The preheated metal oxide particles then enter a reacting cavity. As temperature increases, the metal oxide particles reduce to release oxygen, which discharges through a gas outlet. Reduced metal oxide particles discharge through a particle outlet into a particle storage tank, and then into an oxidation heat exchanger to react with the discharged oxygen discharged to release and transfer stored chemical energy to a medium to be heated. The oxidized metal oxide particles are conveyed into a storage tank, and again enter into a particle inlet of the light receiving cavity. Ambient air controls the gas flow rate in the reactor and the reacting rate in exchanger.

Dual-cavity method and device for collecting and storing solar energy with metal oxide particles

A solar chemically recuperated gas turbine system includes an exhaust-gas reformer, a solar reformer and a gas turbine unit with a combustion chamber. The reaction outlet of the exhaust-gas reformer is connected to the inlet of the solar reformer, the flue gas side inlet of the exhaust-gas reformer is connected to the exhaust-gas outlet of the gas turbine. The solar reformer outlet is connected to the combustion chamber inlet. Combustion gas drives the gas turbine after fuel burns in the combustion chamber, and the exhaust gas enters the exhaust-gas reformer. Fuel and steam are mixed and enter the reaction side of the exhaust-gas reformer through a fuel inlet. A reforming reaction between the fuel and steam under heating of the exhaust gas generates syngas. A further reforming reaction occurs by absorbing concentrated solar energy after the syngas enters the solar reformer, and the reactant is provided to combustion chamber.

Solar chemically recuperated gas turbine system

A device of high-temperature solar gas turbine power generation with thermal energy storage includes a combustion chamber, a solar receiver, a thermochemical energy storage tank, a triple valve A and a triple valve B. The thermochemical energy storage tank has a high-temperature side and a low-temperature side. One outlet of the triple valve A is connected to the compressed air inlet of the solar receiver, and the other outlet is connected to the inlet of the triple valve B. One outlet of the triple valve B is connected to the low-temperature side of the thermochemical energy storage tank, and the other outlet is connected to the inlet of the combustion chamber.

Device of high-temperature solar turbine power generation with thermal energy storage

The present application discloses a method and an apparatus for solar power generation through gas volumetric heat absorption based on characteristic absorption spectrum. A radiation energy conversion device absorbs concentrated solar radiation and converts radiation energy into thermal energy; the thermal energy is transferred to the other side of the radiation energy conversion device and then is converted into radiation energy; and the energy is transferred in a receiver cavity. The working gas from the outlet of a recuperator flows into the receiver cavity and absorbs the radiation energy. The heated working gas with high temperature flows into a turbine, doing shaft work through expansion. The expanded working gas flows through the recuperator to exchange heat. The working gas flows into a cooler, a compressor and the recuperator in sequence, and then flows into a receiver cavity to be heated volumetrically, completing a thermal power cycle.

Method and apparatus for solar power generation through gas volumetric heat absorption based on characteristic absorption spectrum

A sampling and preparation system is positioned in a coal and biomass co-fired power station, which includes a sampling pipe connected with a boiler flue of the co-fired power station. The sampling pipe from the end close to the boiler flue to the other end away from the boiler flue includes a filtering device, a mass flow controller, a carbon dioxide trap and a pumping device. The sampling and preparation system also includes a carbon dioxide transfer device and aC testing device. The carbon dioxide transfer device is applied to transferring the carbon dioxide from the carbon dioxide trap to theC testing device which is applied to measuring theC in the carbon dioxide sample. The system may calculate the biomass blending ratio of the coal and biomass co-fired power station rapidly.

Sampling and preparation system and its implementation method

A radiation thermal absorber based on characteristic absorption spectrum, a Stirling engine and an operation method thereof. The radiation thermal absorber allows working gas in the Stirling engine to absorb radiation heat quickly, and help the Stirling engine adopt assistant heating to ensure steady operation when solar power is not enough. The radiation thermal absorber includes a heater base, a radiation energy conversion device, heating tubes, a combustion chamber and valves of the heating tubes. The radiation energy conversion device converts the solar energy into radiation energy near a characteristic absorption peak of the working gas, and the working gas absorbs the radiation directly in depth.

Radiation thermal absorber based on characteristic absorption spectrum, and stirling engine and operation method thereof

Disclosed are a catalyst for synergistic control of oxynitride and mercury and a method for preparing the same. The catalyst includes the following components by mass percentage: a carrier: TiO2 72%-98.6%, active components: V2O5 0.1%-5%, WO3 1%-10%, Cr2O3 0.1%-5% and Nb2O5 0.1%-5%, and a co-catalyst of 0.1%-3%. The present invention can be used for reducing the oxynitrides in a flue gas, meanwhile oxidizing zero-valent mercury into bivalent mercury and then controlling the reactions, has relatively high denitration performance and also has high mercury oxidation performance; compared with current commercial SCR catalysts, the mercury oxidation rate of the catalyst is improved to a great extent, which can adapt to the requirements for mercury removal in China's coal-fired power plants, the conversion rate of SO2/SO3 is relatively low, and the catalyst has a better anti-poisoning ability, and is a new catalyst with a low cost and high performance.

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Hangzhou, China

Zhongyang Luo