13 results about "Integrated gasification combined cycle" patented technology

The invention provides a method for optimizing an integrated coal gasification combined cycle process by utilizing solar energy. The method comprises the following steps: generating hydrogen and oxygen through photovoltaic electrolysis of water; the dead steam / oxygen mixed gas is heated through fused salt generated through photo-thermal; the coal gasifier is heated through fused salt generated through photo-thermal; carrying out pre-combustion carbon capture on the cooled synthesis gas through an MOF material with a photoinduced structural transformation property; the synthesis gas subjected to carbon capture in the combustion chamber and the other part of oxygen are subjected to pure oxygen combustion; and cooling the flue gas for carbon capture after combustion. According to the method, the operation load fluctuation, the energy consumption and the carbon capture cost of the coal gasification combined cycle process are reduced, and the overall economy is improved.

The application relates to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof, and belongs to the field of coal gasification combined cycle power generation coupled with biomass, in particular to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof. The application is used for solving the problems that the existing IGCC system has low CO2 capture rate, high energy consumption, low power generation efficiency, and a large amount of nitrogen generated in the oxygen taking process and difficult to effectively utilize. The application comprises an air separation device, a gasification furnace, a sensible heat recovery device, a purification device, a gas power generation unit, a waste heat recovery unit, a steam power generation unit, a biomass fermentation device, a methane reforming unit, an adsorption separation unit and an ammonia synthesis tower. The application is based on the overall coal gasification combined cycle power generation system of post-combustion CO2 capture and oxygen-enriched combustion technology, introduces a biomass ammonia synthesis process, generates H2 and CO through biomass fermentation and reforming, utilizes N2, and improves the system efficiency.

The present invention discloses a medium and high temperature desulfurization composite adsorbent and its preparation method and application. The composite adsorbent uses rectorite or modified rectorite as a carrier and metal oxides loaded on the carrier as active ingredients. The preparation method of the sulfur composite adsorbent is as follows: S1. Add nitric acid solution to the nitrate solution to adjust the pH, and then add citric acid, and mix evenly to obtain a mixed solution; S2. Add rectorite or modified rectorite to the mixed solution, and then perform ultrasonic impregnation treatment. The impregnated rectorite or modified rectorite is subjected to a water bath. After it becomes a gel state, it is aged. After the aging is completed, it is dried to obtain a solid; S3. Place the solid in a muffle furnace for calcination, and after the calcination is completed, it is crushed. This composite adsorbent has high desulfurization efficiency, good cycle stability, and is easy to regenerate, and can be used for high-temperature removal of hydrogen sulfide gas generated in integrated gasification combined cycle power generation, fuel cell production, and biomass gasification power generation processes.

The invention relates to the technical field of supports, and particularly discloses a support suitable for a cloth bag type filter of an IGCC (integrated gasification combined cycle) gas turbine. The upper end of the strip-shaped bracket part is fixed on the inner side of the frame part, and the bottom end of the strip-shaped bracket part is inserted into the cloth bag and is used for opening the cloth bag, so that the filtering area is maximized; the reinforcing part is arranged on the upper surface of the frame part, is connected with the top end of the strip-shaped bracket part and is used for fixing the strip-shaped bracket part on the frame part; according to the invention, a plurality of strip-shaped filter bags can be opened at the same time, so that the problem that the filter bags are folded and twisted due to the influence of airflow during filtration can be effectively prevented, the maximization of the filter area of the cloth bag is realized, and the filter effect is effectively improved.

The present invention provides an operation method of an integrated gasification combined cycle, the method comprising the steps of: (a) securing basic data obtained from one or more raw materials and additives, one or more sensor means installed in the integrated gasification combined cycle, and intrinsic values of the raw materials and additives; (b) securing process data obtained from the sensor means; (c) securing output data obtained through the integrated gasification combined cycle; (d) collecting the basic data, the process data, and the output data to label the data with a machine learning model; and (e) deriving optimal operating conditions on the basis of the labeled data.

The invention relates to the technical field of coal gasification combined cycle power generation, in particular to a control method and system suitable for adjusting the water level of a medium-pressure steam drum of an IGCC unit waste heat boiler, and the control method comprises the steps that S1, the liquid level of the medium-pressure steam drum is detected, a differential pressure type liquid level measuring instrument is arranged, a medium-pressure steam drum liquid level signal is transmitted to a DCS, and the DCS filters the liquid level signal through a filtering system LDLG for use; s2, the medium-pressure steam drum liquid level is controlled through a DCS, and a medium-pressure steam drum liquid level cascade closed-loop control loop is arranged and comprises a medium-pressure steam drum liquid level main control loop and a medium-pressure water supply flow auxiliary control loop; through the medium-pressure steam drum water level cascade closed-loop control method, the control precision of the medium-pressure steam drum water level can be improved, meanwhile, the response speed of the medium-pressure steam drum water level can be improved by designing a feedforward link, and when the medium-pressure recovery flow of a gasification furnace steam drum changes, it can be guaranteed that the medium-pressure steam drum water level is adjusted in time; and large water level control fluctuation of the medium-pressure steam drum caused by water vapor imbalance due to overlarge change of medium-pressure recovery flow of the gasification furnace steam drum is avoided.

The invention relates to the technical field of water conservancy projects, in particular to an IGCC (integrated gasification combined cycle) unit tower pool water surface floating object collecting device which comprises a collecting assembly, a water surface floating object collecting assembly and a water surface floating object collecting assembly, and the collecting assembly comprises a collecting barrel and floaters arranged on the surface of the collecting barrel; the floating and sinking assembly comprises a box body and branch pipes arranged at the bottom of the box body; the expansion assembly comprises an air bag arranged in the box body and a ventilation pipe connected with the air bag; the weight of water in the box body is changed under the action of the water pump, so that the collecting barrel can float and sink up and down during filtering, can float upwards when the collecting barrel is full, so that water entering is reduced, the water level in the collecting barrel is reduced, floating objects can be in direct contact with the filtering barrel, and sink downwards when the water level in the collecting barrel is low, water filling is increased, and the filtering speed is increased; meanwhile, the opposite arrangement of the floating block and the floater can drive the filter barrel to move up and down relative to the collecting barrel to change the position of the floater and avoid blockage of filter holes in the surface of the filter barrel.

A powder supply hopper pressurizing apparatus including a first buffer tank in which pressurizing gas to be supplied to a powder supply hopper is accumulated at a predetermined pressure, a second buffer tank, a lower part pressure adjustment nitrogen system connected to the powder supply hopper, to supply the gas toward powder fuel stored in the powder supply hopper when supplying the powder fuel to a burner, and a control unit that controls the first buffer tank to pressurize the powder supply hopper to a first pressure and then controls the second buffer tank to pressurize the powder supply hopper to a second pressure, and where the control unit determines that one of the first buffer tank or the second buffer tank is non-usable, the control unit pressurizes the powder supply hopper by use of the first or second buffer tank that is operable, and the gas supply system.

An object of the present invention is to provide a fiber and a method for manufacturing the fiber that can more effectively utilize waste discharged from integrated gasification combined cycle power generation. The fiber contains, as a raw material, waste discharged from integrated gasification combined cycle power generation (IGCC).

The present invention includes: at least one feed hopper for retaining char separated from a generated gas that is generated in a gasifier; a char feed line for feeding char to the gasifier; a char flow rate adjustment device; a fuel feed line that feeds a carbon-containing solid fuel to the gasifier; a fuel flow rate adjustment device provided on the fuel feed line; an oxidant feed line for feeding an oxidant to the gasifier; an oxidant flow rate adjustment device provided on the oxidant feed line; and a control device. The control device is configured to control the char flow rate adjustment device so as to control the char flow rate depending on the load on a unit that uses a combustible gas, and to control at least one of the fuel flow rate adjustment device and the oxidant flow rate adjustment device depending on a total char level.

The invention discloses an IGCC (integrated gasification combined cycle) system coupled with biomass near-zero emission and high-purity CO2 capture and a working method thereof, belongs to the field of coal gasification combined cycle power generation coupled with biomass, and particularly relates to the IGCC system coupled with biomass near-zero emission and high-purity CO2 capture and the working method thereof. The problems that in an existing IGCC system, the carbon dioxide capture rate is low, the power generation efficiency is reduced due to large energy consumption, and a large amount of nitrogen generated in the oxygen taking process is difficult to effectively utilize are solved. The system comprises an air separation device, a gasification furnace, a sensible heat recovery device, a purification device, a gas power generation unit, a waste heat recovery unit, a steam power generation unit, a biomass fermentation device, a methane reforming unit, an adsorption separation unit and an ammonia synthesis tower. According to the integrated coal gasification combined cycle power generation system based on CO2 trapping after combustion and an oxygen-enriched combustion technology, a biomass ammonia synthesis process is introduced, H2 and CO are generated through biomass fermentation and reforming, and the system efficiency is improved while N2 is utilized.

This invention discloses a method and system for targeted deep desulfurization of syngas for integrated gasification combined cycle (IGCC) power generation, belonging to the field of gas purification. The process includes pretreatment to remove impurities, removal of most inorganic sulfur using an alkanolamine solution, and graded treatment of the syngas through an Al2O3 layer, a pre-sulfurized NiMoS / CoMoS catalyst layer, and a zinc oxide layer in a fine desulfurization tower. GC-SCD technology is used to trace the sulfur form and optimize the process. The deactivated catalyst is regenerated by low-temperature coking and resulfurization. The pre-sulfurization catalyst uses TiO2-Al2O3 as a carrier, with TiO2 accounting for 5-15 wt%, and the catalytic hydrolysis conditions are 100-140℃ and 1.5-2.2 MPa. This invention achieves targeted conversion of organic sulfur under mild conditions, inhibits the formation of thiols and sulfides, and the catalyst is regenerable. The total sulfur in the treated syngas is ≤0.1 ppm, making it suitable for ultra-deep purification of IGCC and coal chemical syngas, with high desulfurization efficiency and low operating costs.

The invention discloses a method for controlling the temperature of low-calorific-value synthetic gas of an IGCC unit, and relates to the technical field of gas turbine control and auxiliary machine systems. Comprising the following steps: designing a wet synthesis temperature cascade closed-loop control loop in a DCS; designing and adding a steam injection flow feed-forward link and a dry synthesis gas flow feed-forward link; the temperature is controlled through the upper and lower limit locking function of the temperature of the wet synthesis gas; and aiming at various faults of temperature control of the wet synthesis gas, an interlocking control function is set, and meanwhile, an alarm is given. The temperature of the wet synthesis gas can be adjusted in time, and the situations that due to the fact that the temperature of the wet synthesis gas changes too much, gas turbine equipment is damaged, combustion is not stable, and gas turbine fuel double-switching is not stable are avoided.