70 results about "Boiler (power generation)" patented technology

This invention proposes a method and system for improving the power generation efficiency of steam turbines, relating to the field of gas-fired power generation technology in steel plants. The method includes: obtaining and purifying high-temperature flushing water from the blast furnace flushing process; using the purified high-temperature flushing water to heat a circulating medium; introducing the heated circulating medium into a thermal storage station to mitigate the intermittency and fluctuations of the waste heat from the flushing water; using the heated circulating medium from the thermal storage station to heat condensate; the cooled circulating medium after heat exchange entering a cold storage station; exchanging heat between the cooled circulating medium from the cold storage station and the purified high-temperature flushing water to form a closed-loop circulation of the circulating medium; and sending the heated condensate, after further multi-stage heating, into a boiler to generate steam to drive the steam turbine for power generation. The method and system proposed in this invention can effectively utilize the waste heat from the blast furnace flushing water, thereby improving overall efficiency.

This utility model discloses a mechanical cold-press sludge treatment device, including a sludge mechanical cold-press deep dewatering system, a dried sludge incineration waste heat recovery system, and a flue gas purification system; it includes a wet sludge storage silo, a primary sludge conveying pump, a sludge conditioning machine, a secondary sludge conveying pump, a sludge distributor, a sludge cold press, a sludge feeder, a dry sludge storage silo, a sludge feeder, a sludge incinerator system, a waste heat boiler system, an SNCR in-furnace denitrification system, an electrostatic precipitator, a dry deacidification tower, an activated carbon injection system, a bag filter, a lime-gypsum wet deacidification tower, a low-temperature SCR denitrification system, an induced draft fan, and a chimney; this utility model achieves sludge dewatering and drying at room temperature through mechanical cold-pressing technology to reach the conditions for self-sustaining combustion, and then incinerates the dried sludge through a bubbling circulating fluidized bed incineration, fully recovering the heat released from sludge incineration for power generation or heating, thereby realizing the resource utilization of sludge.

The application discloses a kind of based on AI's core energy storage collaborative intelligent smelting and power generation technical method and its operation management system, it is related to industrial energy comprehensive utilization technical field.The application is by being changed into energy storage body to smelting furnace, incinerator, steam boiler, and is combined with unique core tank structure, realize the efficient storage of wind energy, solar energy, biomass energy and industrial waste heat;Through end-edge-cloud three-level AI management platform, dynamically allocate energy input path, intelligent switch smelting, power generation, peak shaving three heat release modes, form collection-storage-conversion-usage closed loop.The application makes energy storage power station construction cost drop 80%, energy utilization efficiency is promoted to more than 85%, grid peak shaving response time is less than or equal to 1 second, smelting energy consumption is reduced by 25%-30%, investment recovery period is shortened to 3-5 years, solve renewable energy and industrial waste heat difficult to store, energy storage power station cost is high, grid peak shaving is difficult and other pain points, applicable to steel, non-ferrous metallurgy and industrial park and other multiple scenes.

This invention relates to the field of waste-to-energy incineration technology and provides an artificial intelligence-based combustion control method for waste-to-energy boilers. The method includes: collecting data from a distributed control system, flue gas monitoring, and feed metering, aligning these data with a unified time frame, and generating combustion condition data; calculating drift residuals and missing rates, classifying and labeling them to obtain confidence weights; calculating equivalent lower heating value and moisture content from steam flow and feed flow based on energy balance, updating parameters only during the stable steam and carbon monoxide windows; identifying the equivalent time delay from control quantities to steam and emissions based on cross-correlation peak values, writing this information into the prediction model after stabilization, and performing shift compensation; constructing hard constraints for steam and emissions based on aligned predictions, writing confidence into the cost function, using MPC to calculate the feasible region, selecting incremental deployments within the policy network domain, and backing down and auditing for low confidence levels.

The application discloses a heat exchanger and boiler flue gas waste heat recycling equipment, which comprises a base plate, heat storage mechanisms and steam turbines are installed on the upper surface of the base plate, the heat storage mechanisms are connected with the steam turbines through pipelines, the heat storage mechanisms absorb the heat of flue gas to generate water vapor, the steam turbines are driven to operate by the water vapor, the base plate is provided with a reversing mechanism, the reversing mechanism is installed on the output end of the steam turbine, and the base plate is provided with crushing mechanisms and generators on the left and right sides of the upper surface. According to actual working conditions, the waste heat power generation and the waste heat driven crushing can be flexibly switched, the limitation of single function of the traditional waste heat recycling equipment is broken, the coal blocks are fully crushed into small particles, the fuel loss rate is effectively reduced, the conversion of the furnace ash and slag from solid waste to recyclable resources is realized, the land resources and disposal costs required for the storage or landfill of the furnace ash and slag are reduced, and the environmental occupation and pollution pressure of the solid waste are reduced.

The application provides a hazardous waste incineration waste heat intelligent gradient utilization system and method, the system comprises: a thermal energy gradient utilization subsystem and an intelligent control and optimization subsystem; the thermal energy gradient utilization subsystem is provided with multiple waste heat utilization units, wherein a high-temperature power generation level waste heat boiler is used for recovering high-temperature flue gas heat energy and generating steam to drive a steam turbine generator unit to generate power; a medium-temperature process driving level flue gas bypass system is used for providing a process heat source to a drying device and / or a denitration device to replace or partially replace auxiliary fossil fuel heating; a low-temperature heating / cooling level waste heat recovery device is used for recovering low-temperature flue gas waste heat and supplying energy to a plant area heating or cooling system; the intelligent control and optimization subsystem is used for acquiring incineration working conditions and operation state data of the multiple waste heat utilization units and performing coordinated control on the multiple waste heat utilization units. The application can meet the requirement of standard pollutant emission while improving energy utilization efficiency and reducing auxiliary fossil energy consumption.

This utility model relates to the field of waste-to-energy incineration technology, and proposes a stable steam production system for waste-to-energy incineration. The system includes a main boiler body, with a secondary boiler body integrally connected to its outer surface. A steam inlet is integrally connected to the upper end of the main boiler body. A mounting cover is installed and connected to the lower end of the main boiler body, with a pump pipe and an exhaust pipe connected to its lower left and right sides, respectively. A flue gas treatment pipe is installed and connected inside the secondary boiler body, with its lower end penetrating the lower end of the secondary boiler body and communicating with a connector. The upper end of the conveying pipe is connected to a connecting pipe, and its lower end penetrates the flue gas outlet pipe and communicates with the exhaust pipe. This stable steam production system for waste-to-energy incineration facilitates ash removal and protection of the waste heat boiler used for steam production, extending its service life. It also facilitates the full absorption of heat from the flue gas while preventing dust in the flue gas from being released into the air, reducing pollution.

The utility model provides a kind of dry quenching power generation system of combined steam power generation and steam extraction using multiple parameters, belongs to dry quenching power generation system technical field, comprising: dry quenching boiler, waste heat boiler, make-up extraction condensing steam turbine, generator, adjustable medium-pressure steam extraction port, low-pressure make-up regulating valve and steam-water separator;Main steam produced by dry quenching boiler is passed into the main steam port of make-up extraction condensing steam turbine by main steam pipeline, and low-pressure saturated steam produced by waste heat boiler is passed into the make-up port of make-up extraction condensing steam turbine by make-up pipeline;The system drives generator to generate electricity by make-up extraction condensing steam turbine through main steam and low-pressure saturated steam, without using parameter reduction device to reduce parameter, so as to reduce energy waste and improve overall thermal efficiency. And by setting adjustable adjustable medium-pressure steam extraction port, the extraction amount of medium-temperature medium-pressure steam can be adjusted according to the needs of chemical production section in factory area.

The application provides a circulating fluidized bed boiler system and a control method, and relates to the technical field of thermal power generation. The circulating fluidized bed boiler system comprises a boiler body, a molten salt heat storage loop and a molten salt heat release loop. The boiler body has a furnace, a main steam pipeline and a water-cooled air chamber. The molten salt heat storage loop comprises a heat storage heat exchanger, a high-temperature molten salt tank and a low-temperature molten salt tank. The steam inlet of the heat storage heat exchanger is connected with the main steam pipeline through a bypass pipeline, which is used for converting the excess steam heat energy during boiler load reduction into the sensible heat of molten salt and storing the sensible heat in the high-temperature molten salt tank. The molten salt heat release loop comprises a feed water heat exchanger and a radiator. The feed water outlet of the feed water heat exchanger is connected with the feed water inlet of the boiler body, and the air outlet of the radiator is connected with the water-cooled air chamber, which is used for providing heat to the boiler body during the fire banking period to maintain the bed temperature and the steam drum pressure. The application actively compensates for the heat loss of the bed material during the fire banking period by using external heat storage, prolongs the fire banking heat preservation time and reduces the start-up fuel consumption.

The application discloses a waste heat utilization method for an aluminum carbon factory adopting steam-electric dual drive, and the method is based on four subsystems of waste heat recovery, steam-electric dual drive, feed water circulation and intelligent control: the waste heat recovery subsystem captures 850-1100 DEG C high-temperature flue gas of a carbon calcining furnace, and converts the high-temperature flue gas into high-temperature and high-pressure steam through a waste heat boiler; the steam-electric dual drive subsystem realizes flexible switching of four modes of motor driving, combined driving, steam driving and driving and power generation through three clutch combinations; the feed water circulation subsystem realizes closed loop circulation of a working medium; and the intelligent control subsystem automatically regulates and controls based on multi-sensor data, so that the application improves waste heat comprehensive utilization efficiency, guarantees production continuity and is suitable for power driving scenes of key fan equipment of the aluminum carbon factory.

The present invention provides a steam flow control device, a power plant, a steam flow control method, and a steam flow control program that enable load reduction while maintaining dry operation. [Solution] The steam flow control device 50 is a steam flow control device 50 for a power plant that includes a bypass line for bypassing steam passing through the heat recovery section of a boiler and a bypass valve for adjusting the steam flow rate, and comprises an acquisition unit 51 for acquiring the required power generation amount of the power plant, a calculation unit 52 for calculating the corresponding steam flow rate and bypass valve opening degree, which is the opening degree of the bypass valve, based on the acquired required power generation amount, and an adjustment unit 53 for adjusting the opening degree of the bypass valve so that it corresponds to the calculated steam flow rate.

This disclosure relates to the field of power generation technology, and in particular to a cooling device and method for a sorting chamber, to solve the problems of poor stability, frequent failures, and low recovery efficiency in existing circulating fluidized bed boilers. The chamber is inclined and has an inlet ash inlet, a first ash discharge outlet, and a second ash discharge outlet. An ash inlet unit is fixedly installed on the chamber and positioned at the ash inlet; the ash inlet unit is used to regulate the amount of ash entering the sorting chamber. The sorting unit is inclined and communicates with the ash inlet unit, discharging the sorted bottom ash through the first ash discharge outlet. The cooling unit includes multiple cooling chambers and multiple baffles, with each baffle forming one cooling chamber. Each baffle contains a cooling medium for cooling, and the bottom ash in the cooling chamber is discharged through the second ash discharge outlet. The sorting chamber cooling device and method provided in this disclosure are used to improve the stability of circulating fluidized bed boilers and reduce their failure rates.

The application provides an oil-immersed transformer heat recovery process based on a magnetic suspension heat pump system, which comprises an insulating oil circulation loop, an oil-free magnetic suspension heat pump system, a modular heat energy recycling loop and a double-PLC control system; the oil-free magnetic suspension heat pump system comprises an oil-free magnetic suspension compressor, a multiple metal isolation and leakage detectable heat exchanger, an electronic expansion valve, a pipeline and a drying structure; heat recovery is realized through the following steps, direct emission of a large amount of waste heat to the atmosphere is avoided, the local exacerbation problem of urban "heat island effect" is relieved, the operation noise of the oil-free magnetic suspension compressor is far lower than that of a traditional large fan, on one hand, indirect power generation carbon emission is reduced through power saving, on the other hand, fossil fuel boiler is replaced by heat production, combustion carbon emission is directly reduced, meanwhile, the service life of the transformer is prolonged, and the hidden carbon emission in the equipment manufacturing and replacement process is reduced.

This invention relates to a photovoltaic-thermal combined power generation system, comprising a hot water storage tank, photovoltaic power generation modules, a first collector, and a second collector. The photovoltaic power generation modules are arranged along a first direction to form a photovoltaic column; multiple first collectors are arranged along the first direction to form a first solar thermal column; multiple second collectors are arranged along the first direction to form a second solar thermal column. The second solar thermal column, the first solar thermal column, and the photovoltaic column are arranged along a second direction. Both the first and second collectors have vacuum tubes. The vacuum tubes of the first and second solar thermal columns are sequentially connected to form a U-shaped solar thermal loop. This photovoltaic-thermal combined power generation system reduces downstream losses from heating demineralized water using steam, reduces boiler energy consumption, and saves energy for the power plant. Furthermore, the combined solar thermal and photovoltaic systems are arranged on the same site, making efficient use of land and increasing the proportion of green and clean energy in the power plant's power generation.

This invention relates to the field of gas turbine power generation and energy storage regulation technology, and discloses a gas turbine power generation system coupled with an energy storage system. The system includes a gas turbine, a gas turbine generator, an energy storage system, a heat storage / release system, a dual-pressure waste heat boiler, a steam turbine, a steam turbine generator, and an energy management system. The output of the gas turbine generator is electrically connected to both the energy storage system and the power grid, and the output of the steam turbine generator is also electrically connected to the power grid. The heat storage / release system includes a high-temperature molten salt tank, a low-temperature molten salt tank, a heat release loop, and a heat storage loop. The heat storage loop is connected between the gas turbine exhaust port and the main flue gas inlet of the dual-pressure waste heat boiler via a molten salt-flue gas heat exchanger. The heat release loop is thermally coupled to the high-pressure steam-water working fluid passage of the dual-pressure waste heat boiler via a molten salt-steam heat exchanger. This system can coordinate electrical power compensation and thermal output regulation, improving the variable load response capability of the gas turbine combined cycle system.

The present application relates to the technical field of boiler, a coal and biomass coupling combustion device with fly ash supplementing, wherein the coal and biomass coupling air and powder channel is sleeved outside the central air pipe, the central air pipe and the output end of the coal and biomass coupling air and powder channel are arranged in the same direction and coaxially, the supplementary primary air and fly ash gas flow channel is sleeved outside the coal and biomass coupling air and powder channel, and the output end of the supplementary primary air and fly ash gas flow channel and the coal and biomass coupling air and powder channel are arranged in the same direction and coaxially, the device utilizes fly ash to directly participate in the biomass combustion process, accurately acts on the alkali metal migration process, and further weakens the slagging property of the heating surface of the coal and biomass coupling power generation boiler. The present application further provides a coal and biomass coupling combustion system with fly ash supplementing.

The application discloses a control method of a pulverizing system considering multi-parameter cooperation and relates to the technical field of thermal power generation. Operation parameters of a thermal power generating unit at a current time point are acquired; the operation parameters include parameters of a boiler combustion process, parameters of a pulverizing system, storage state information of an external powder bin and parameter information of a boiler variable load; the operation parameters are input into a data correlation model to obtain initial control instructions of the pulverizing system; the data correlation model is obtained based on fusion training of fuzzy reasoning and neural network algorithms; the initial control instructions are taken as initial positions of a population, a maximum comprehensive evaluation function value is taken as a target, and the initial control instructions are iteratively optimized in a combination mode of a particle swarm algorithm and a genetic algorithm, so that a global optimal solution of the last iteration is taken as the control instruction of the pulverizing system; the comprehensive evaluation function is constructed based on the performance of the pulverizing system; and the pulverizing system is controlled to operate through the control instruction. The method can realize efficient operation of the pulverizing system.

The application relates to a power generation and seawater desalination integrated system and method based on dry quenching waste heat utilization. The inert gas outlet of the dry quenching furnace in the power generation and seawater desalination integrated system is communicated with a CO2 waste heat boiler. The inert gas outlet of the CO2 waste heat boiler is communicated with a first seawater desalination device. The inert gas outlet of the first seawater desalination device is communicated with the dry quenching furnace. The CO2 gas outlet of the CO2 waste heat boiler is communicated with a power generation device. The CO2 gas outlet of the power generation device is communicated with a CO2 circulation module, the CO2 gas outlet of the CO2 circulation module is communicated with a second seawater desalination device, the CO2 gas outlet of the second seawater desalination device is communicated with the CO2 circulation module, and the CO2 gas outlet of the CO2 circulation module is communicated with the CO2 waste heat boiler. The beneficial effects are that carbon is reduced, water is not consumed, and water is produced. The waste heat utilization rate is improved, power generation and fresh water preparation are increased, costs are reduced, heat exchange efficiency and power generation efficiency are improved, the occupied space is reduced, the process flow is shortened, and the equipment cost is reduced.

The application discloses a kind of special power generation thermal equipment for garbage incineration, it is related to garbage incineration power generation technical field, including heating surface, the outside of heating surface is provided with dynamic heating mechanism, dynamic heating mechanism is used to adjust heating part to improve heat absorption efficiency in turn, dynamic heating mechanism includes the heating cylinder installed in the inside of heating surface, the outside of heating cylinder is all installed with fin, the upper and lower ends of fin are all installed with buffer bin, the inside of buffer bin is all installed with coil spring, so that heating surface is adjustable, when smoke gas discharge volume is more and flow rate is fast, smoke gas is rotated by fin and drives heating cylinder, so that the back of heating cylinder is also heated, increase the heat absorbed in unit time, strengthen heat exchange process, when smoke gas discharge volume is less and flow rate is slow, the blocking and shunting effect of fin to smoke gas, make the flow field of smoke gas in waste heat boiler more uniform, avoid the situation that local flow rate is too fast or too slow, reduce flow resistance.

The application discloses a kind of boiler combustion monitoring method and device, including to monitoring unit injection flue gas;Carbon dioxide concentration is detected to air inlet end and data is recorded;By injecting oxygen in reaction furnace, carbon particles in flue gas can be fully combusted in furnace;Carbon dioxide concentration is detected to air outlet end and data is recorded;The difference of carbon dioxide concentration in different ports determines how much residual carbon carried in flue gas.The beneficial effects of the present application are that by real-time detection of fly ash carbon content, it is convenient for staff to quickly record data and feedback maintenance, which is beneficial to guide the correct adjustment of wind-coal ratio and improve the level of boiler combustion control;Reasonably control the index of fly ash carbon content, which is beneficial to reduce power generation cost and improve the economy of unit operation.

This utility model discloses a steam desuperheating system based on a waste heat boiler with a reheat gas turbine, including a water spray desuperheating system and a steam bypass desuperheating system. The water spray desuperheating system includes a main pipeline, on which a low-temperature reheater, a desuperheater, and a high-temperature reheater are sequentially distributed along the steam flow direction. The steam bypass desuperheating system includes a cold reheat steam desuperheating bypass, which is distributed in parallel at both ends of the main pipeline, and a regulating valve is installed on the cold reheat steam desuperheating bypass. This utility model adds a steam bypass desuperheating system to the original water spray desuperheating system, reducing the amount of desuperheating water sprayed, making it easier to atomize. By controlling the steam bypass flow rate, the heat absorption of the boiler reheater is reduced, thereby controlling the boiler hot reheat steam outlet temperature. This not only improves the boiler high-pressure steam output, unit power generation output, and overall unit operating efficiency, but also reduces the risk of water carryover in the reheat steam, ensuring the safe operation of the unit.

The application provides a coal power adjustable capacity prediction method. The method comprises the following steps: establishing a prediction scene set of typical power coal variety prices to obtain predicted prices of the typical power coal varieties; establishing an objective function of minimizing the coal blending and burning power generation cost, and establishing a coal blending optimization model according to the power coal consumption constraint, the boiler calorific value, the boiler ash content and the boiler sulfur content constraint, solving the coal blending optimization model to obtain an optimal coal blending strategy; establishing a linear regression model of the blocked capacity of the coal power unit during the peak output period and the power coal quality according to the historical data of the adjustable capacity and the power coal quality of the coal power unit in the power system during the peak output period; predicting the corresponding blocked capacity through the linear regression model; calculating the coal power adjustable capacity of each coal power unit in the power system to obtain the adjustable capacity coefficient of the power system, and evaluating the coal power generation capacity according to the adjustable capacity coefficient.

The application discloses a sintering flue gas heat storage combustion-supporting blast furnace gas coupling sintering waste heat power generation device, which comprises a sintering machine, a pair of high-temperature heat storage furnaces, a first gas preheater, a power generation mechanism and a flue gas purification mechanism.

This application relates to a combined heat and power (CHP) system. The method includes a boiler, a power generation steam-water system, and a steam supply steam-water system. The boiler's head flue is connected to the power generation steam-water system; the boiler's tail flue is connected to the steam supply steam-water system; the boiler burns fuel to generate heat; the power generation steam-water system obtains feedwater for power generation; the feedwater is heated by the heat from the head flue to obtain steam for power generation; the steam for power generation drives the power generation steam-water system to generate electricity; the steam supply steam-water system obtains feedwater for power supply; after being heated by the heat from the tail flue, the feedwater undergoes flash evaporation in the steam supply steam-water system to obtain steam for power supply. This method can reduce energy waste.

This invention discloses a zero-carbon power generation and green methanol synthesis system and method coupled with SOEC (Solar-Energy Integrated Circuit), belonging to the field of synergistic coupling technology of new energy and thermal power generation. The system includes fluctuating green electricity from a large-scale wind and solar new energy base, a supercritical steam-water thermal system of a thermal power plant, an oxygen-enriched combustion boiler in a coal-fired power plant, a CO2 condensation, purification, and capture unit, a high-temperature gas-steam regenerative heat exchanger, SOEC, a medium-temperature high-pressure oxygen buffer tank, a magnesium-based solid hydrogen storage device, a liquid CO2 buffer storage tank, a continuous green methanol synthesis tower, and a liquid methanol finished product storage and transportation tank. This invention can reduce the raw material cost of green methanol; it has relatively high combustion efficiency and can reduce the combustibles in boiler fly ash; it enables coal-fired power assets to become the thermal foundation supporting efficient hydrogen production technology, achieving integrated solar and thermal synergy, with better resource utilization and stability.

The application discloses a multi-factor coordinated coal powder regulation system and method based on an external powder bin of a boiler, and relates to the technical field of thermal power generation. The system comprises a data acquisition module, an intelligent regulation module, a powder taking device and a powder feeding fan; the intelligent regulation module is connected with the data acquisition module, the powder taking device and the powder feeding fan; the data acquisition module is used for acquiring coal powder characteristic parameters, pipeline pressure parameters and conveying distance parameters; the intelligent regulation module is used for calculating the powder taking amount and the powder feeding speed through a fuzzy control algorithm or a neural network algorithm according to the coal powder characteristic parameters, the pipeline pressure parameters and the conveying distance parameters, controlling the powder taking device to take coal powder from the external powder bin of the boiler according to the powder taking amount, and controlling the powder feeding fan to convey the coal powder to the boiler according to the powder feeding speed. The system realizes accurate control over the powder taking and powder feeding processes.

This invention discloses an apparatus and method for calcining coal gangue, relating to the fields of heat treatment and equipment. The apparatus includes: a preheater and a waste heat boiler connected in parallel to a calcining furnace. The furnace chamber is divided into an oxidation zone and a reduction zone, both equipped with fuel nozzles. The oxidation zone and reduction zone are connected by a constriction, with the reduction zone located downstream of the gas flow. The calcining furnace is connected to the preheater and the waste heat boiler via a separator. A cooler is connected to the material outlet of the calcining furnace, and the cooler is connected to a finished product collection system. This invention can simultaneously convert low-quality fuel, including coal gangue, into coal gas and electricity during the process of calcining coal gangue to manufacture inorganic materials. This solves the problem of high ash content in low-quality fuel, expands its application range, reduces carbon dioxide emissions, and achieves comprehensive utilization of solid waste; it also improves the efficiency of waste heat power generation.

The utility model relates to the field of renewable energy cross technology, concretely is a kind of novel energy storage and cogeneration system based on polygon coaxial tube well, including renewable energy power generation device, still including power management unit, heat storage device, energy release unit and control unit;The energy release unit includes low temperature heat pump, high temperature heat pump and organic rankine cycle generator set connected in turn;The heat storage device includes electric boiler and polygon coaxial tube heat storage unit connected in turn;The output end of renewable energy power generation device is connected with electric boiler by power management unit;The system passes through polygon coaxial tube heat storage unit and takes middle deep rock mass as large capacity long time heat storage body, matches with coaxial sleeve pipe circulation to improve heat release efficiency, provides new energy storage path;When releasing energy, through heat pump cascade heating and organic rankine cycle generator set, realize heat cascade utilization and cogeneration, reduce energy loss, improve renewable energy utilization efficiency and economy, support energy system low carbon efficient operation.