129 results about "Coal fired power stations" patented technology

The invention relates to the technical field of hydrogen energy, and discloses an auxiliary-machine-free solid oxide electrolytic hydrogen production system and an auxiliary coal electricity deep adjustment method, the hydrogen production system comprises an SOE heat box system for electrolytic hydrogen production, a hydrogen circulation subsystem and a hydrogen storage subsystem; the ejector is driven by external heat source steam, part of hydrogen at an outlet of the SOE heat box system is ejected to a low-pressure suction inlet of the ejector through the hydrogen circulation subsystem, and formed reducing mixed gas of steam and hydrogen enters a cathode inlet of the SOE heat box system. The system is driven by an external heat source and operates in an internal stack heating mode, so that the power consumption of the electrolytic hydrogen production system is reduced; by adopting the modes of external material supply, cathode ejector material self-circulation and multi-stream heat exchange, a complex cold and hot auxiliary machine of a traditional solid oxide electrolytic hydrogen production system is omitted, the structure is simple, and the system compactness is greatly improved; electric power-steam-air-condensed water flow coupling is established with a coal-fired power plant, and efficient, flexible and deep peak shaving is adjusted in combination with steam extraction multi-stage adjustment.

The invention relates to the technical field of thermal power generation, in particular to a coal-fired power plant based on fused salt heat storage, a power generation system and an operation method. The coal-fired power plant comprises a boiler, a steam turbine, a condenser, a deaerator, a first heating unit, a second heating unit and a generator. The coal-fired power plant is further provided with a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, one end of the first pipeline is connected to the pipeline between the boiler and the steam turbine, and the other end of the first pipeline is connected with an air inlet of the fused salt heating unit. One end of the second pipeline is connected with an air outlet of the fused salt heating unit, and the other end is connected with the condenser; one end of the third pipeline is connected with the deaerator, and the other end is connected with an air inlet of the steam generation unit; one end of the fourth pipeline is connected with an air outlet of the steam generation unit, and the other end is connected with the turbine and the first heating unit. And the peak regulation depth and the variable load rate of the coal-fired power plant are improved.

A coal-fired flue gas desulfurization and demercuration device comprises a flue gas input module, the flue gas input module is a flue and desulfurization and demercuration absorption tower connecting device, and the flue outlet end of a power plant can be connected with the inlet end of a desulfurization and demercuration absorption single tower; the outlet end of the desulfurization and demercuration absorption single tower is connected with the inlet end of the tail gas treatment module through a second three-way valve; the flue gas input module is used for introducing flue gas containing SO2 and mercury ions into the absorption single tower; after entering the desulfurization and demercuration absorption single tower, flue gas flows upwards to pass through a multi-stage nozzle arranged in the absorption tower and a corresponding gas distribution plate below the nozzle, and desulfurization and demercuration operation is carried out; according to the utility model, the single-tower combined desulfurization and demercuration technology is realized, the process flow and the device structure are simplified, the number of common multi-tower arrangement is reduced, the operation and the maintenance are simple, the space is saved, and the material consumption cost is reduced; the method can be applied to coal-fired power plant boilers, industrial boilers, garbage incinerators and the like, is particularly suitable for transforming built small and medium-sized coal-fired boilers, and has a wide market application prospect.

The invention discloses a low-carbon energy system and method for coupling solid waste utilization of a coal-fired power plant. The system comprises a photovoltaic generator set, a wind generating set, an electric arc furnace, a biomass crusher, a biomass particle storage device, a coal-fired boiler system and the like. The method comprises the following steps of: providing electric energy for the electric arc furnace by utilizing redundant generating capacity of a photovoltaic generating set and a wind generating set; the fiber material prepared in the electric arc furnace, coal gangue and pulverized coal ash collected in the flue gas dust remover are jointly used as raw materials of the soil-like ecological restoration material, and preparation is performed in a soil-like preparation machine; energy plants which are resistant to drought and high in water and soil conservation capacity are planted under the photovoltaic generator set; the energy plants enter a biomass particle storage device to be stored after being subjected to the procedures of crushing, shaping and the like; the biomass particles are subjected to blending combustion in a coal-fired boiler system; flue gas generated after combustion of the coal-fired boiler system collects pulverized coal ash in a flue gas dust remover. The utilization rate of the coal-based solid waste is increased, and the application field of the coal-based solid waste is expanded.

The utility model provides a system for heating primary air and secondary air by mixing large slag waste heat of a coal-fired power plant boiler, which comprises a tubular heat exchanger which is arranged at a dry bottom hopper below a boiler hearth and is arranged along the left-right direction of the bottom of the dry bottom hopper; a cold air inlet and a hot air outlet are formed in the tubular heat exchanger, and the hot air outlet is connected with a primary fan inlet pipeline and a secondary fan inlet pipeline; cold air is heated by heat carried by large slag discharged by a boiler, the cold air is heated into hot air and then is directly mixed with cold air at the inlet of the primary fan and the inlet of the secondary fan, so that the air temperature is improved, and the problem that ammonium bisulfate is condensed in the air pre-heater due to the fact that the air temperature of the air pre-heater is too low is solved. And the resistance of the air pre-heater is increased.

The invention relates to the field of peak regulation of coal-fired power plants, in particular to a coal-fired boiler direct-drive high-temperature molten salt two-stage heat storage power generation heat supply peak regulation system and method, and the system comprises a coal-fired boiler unit which comprises a coal-fired boiler capable of generating flue gas carrying heat and a flue gas pipeline allowing flue gas to circulate; the fused salt heat storage unit comprises a fused salt storage vessel such as a fused salt tank capable of containing fused salt and a fused salt pipeline allowing the fused salt to circulate, and the fused salt can exchange heat with flue gas in the flue gas pipeline so as to store heat; the one or more power generation units are used for generating power through part of the heat stored by the fused salt heat storage unit, and under the condition that the multiple power generation units are arranged, the multiple power generation units can be independently adjusted; and the heat supply unit is used for supplying heat by using part of the heat stored by the fused salt heat storage unit. With such a configuration, it is possible to achieve power generation and heat supply by coupling the coal-fired boiler and the two-stage molten salt.

The invention relates to the technical field of environmental protection, in particular to an arsenic and selenium online removal system and method for a waste incineration power plant. In the working process, the system obtains fly ash on line from a dust remover of a waste incineration power plant, the fly ash is modified through the on-site chemical and ball-milling integrated modification device to prepare an efficient arsenic-selenium adsorbent, and then the efficient arsenic-selenium adsorbent is conveyed and sprayed into a flue to adsorb pollutants such as arsenic and selenium in flue gas. The adsorbent raw materials are obtained on site in the waste incineration power plant, online modification and further injection adsorption can reduce emission of pollutants such as arsenic and selenium to the atmosphere, the situation that the adsorbent raw materials are obtained from the outside of the waste incineration power plant is avoided, the pollutant control cost is reduced, and the automatic operation level is improved. Namely, the system can realize integrated operation of on-site feeding, modification, injection and adsorption, and can meet the requirement of adsorbing and removing discharged pollutants such as arsenic and selenium in flue gas of coal-fired power plants of units with different capacities.

The invention provides a coal-fired power plant coal conveying belt along-line inspection robot with an active dust removal function, and relates to the technical field of inspection robots, and a blocking cover mechanism is composed of two dustproof blocking covers, two telescopic blocking covers and two connecting rods. When the mechanical arm body is jacked upwards to stretch out and pulled downwards to be stored, the two dustproof blocking covers rotate oppositely along with movement of the mechanical arm supporting platform to achieve opening and blocking, the interior of the inspection robot body can be opened through blocking of the two dustproof blocking covers, and the mechanical arm body is protected against dust interference when not in use. In the working process, the telescopic blocking cover is pulled to store and release the space to avoid interference, and different external environments are detected along with movement of the dustproof blocking cover. When the dustproof blocking cover shields, the detection part faces upwards, when the inspection robot is transported or idle, whether foreign matter and heavy object coping exist at the upper end or not is detected, after the mechanical arm works to drive the blocking cover to be opened, the proximity sensors face the two sides, detection personnel approach, and personnel safety is guaranteed.

The invention relates to the technical field of coal-fired power generation and hydrogen energy, and discloses a matching and operation optimization method of a coal power-SOE coupling peak shaving system, which comprises the following steps: S1, establishing a matching benefit model of a coal-fired unit and a solid oxide electrolysis coupling system, the matching benefit model comprises a system cost model and a system income model; S2, constructing a collaborative peak regulation model, and performing SOEC capacity matching and operation optimization by adopting a bilevel planning method; s3, solving the upper layer model and the lower layer model by using a CPLEX solver; generating an optimal capacity configuration and coordinated operation optimization scheme of the coal-fired unit and the solid oxide electrolysis coupling system; and S4, monitoring the operation state of the system in real time, verifying the power balance constraint of the power grid and the hydrogen mass balance constraint, and updating lower-layer scheduling or feeding back to an upper layer for periodic correction according to an operation result. According to the coupling peak regulation system, electricity, heat and hydrogen multi-energy coupling operation is achieved, so that the peak regulation depth and the variable load rate of a coal-fired power plant are remarkably improved.

The invention relates to the technical field of solid oxide battery and thermal power generation co-production, and discloses a novel solid oxide electric pile coupled with heat storage medium heat management and a use method thereof, the electric pile comprises an upper end plate, a lower end plate, stacked batteries and connectors between the batteries, and a heat management device is arranged in the connectors; the heat management device comprises a heat pipe, a heat management device inlet and a heat management device outlet, and the heat pipe is filled with a capillary core and a heat storage medium. By using a molten salt heat pipe technology, heat generated by the galvanic pile is effectively transferred and stored, the air demand is reduced, and the system energy consumption is reduced. When the load of the power grid is in a valley or peak, the electric pile correspondingly switches an electrolysis mode or a power generation mode, low-temperature molten salt is preheated through steam of a boiler and a steam turbine module and is conveyed to a heat pipe network through a molten salt pump, the temperature of the electric pile is balanced, and heat energy is stored; when the load of the power grid is moderate, the coal-fired power plant is only used for power generation, and the thermal management device can assist the stack in hot standby, maintain the temperature of the stack and improve the dynamic response and operation stability of the stack.

The invention relates to the technical field of thermal energy engineering and industrial artificial intelligence crossing, in particular to a boiler combustion multi-target cooperative control method based on PINN and reinforcement learning, which comprises the following steps: collecting boiler combustion related data through a multi-source sensor network, and fusing edge data; based on physical information neural network modeling training, predicting a key physical field in the boiler; constructing and training a reinforcement learning model based on PINN state embedding; and a multi-target cost function is constructed based on the reinforcement learning model, the multi-target cost function is continuously evaluated through the reinforcement learning model, the weight is automatically adjusted, and multi-target cooperative control over boiler combustion is achieved. The method is obviously superior to a traditional scheme in the aspects of physical consistency, adaptive capacity, real-time performance and multi-target cooperation, and a reproducible theory-engineering integrated new normal form is provided for efficient, clean and flexible operation of a coal-fired power plant boiler combustion system under the double-carbon background.

An air-water mixed cooling type waste heat recovery and dust removal slag conveying system comprises a slag well, a shut-off door which is installed at the bottom of the slag well and used for opening falling slag or closing the shut-off door used for storing the slag, a slag conveyor with the top of the outer side of a horizontal section installed at the bottom of the shut-off door, and a slag crusher installed at the bottom of the lower portion of the tail end of an inclined section of the slag conveyor. The slag conveyor comprises a slag crusher, a slag bin mounted at the bottom of the slag crusher, unloading equipment mounted at the bottom of the slag bin, a dust removal system mounted at the bottom of the unloading equipment, and an air-water mixed cooling system mounted at the tail end of the inclined section of the slag conveyor. The air-water mixed cooling effect is good, slag waste heat is utilized, energy is saved, the heat exchange effect is good, the heat exchange efficiency is high, cooling air is comprehensively regulated and controlled, unloading negative pressure dust suppression is achieved, the boiler efficiency is not affected, the service life of the bag-type dust remover is long, the operation and maintenance cost is low, the atomization effect is improved, and dust fall is achieved. The method can be widely applied to the coal-fired boiler high-temperature slag treatment process, especially the coal-fired power plant boiler high-temperature slag treatment process.

The embodiment of the invention provides a coal-fired unit stable combustion coupling aluminum fuel energy storage semicoke treatment system and method, in the system, an Al2O3 electrolyzer supplies power through a renewable energy power generation device, and an anode outlet of the Al2O3 electrolyzer is connected with an inlet of a condenser; an inlet and an outlet of the first gas mixer are respectively connected with a first outlet of the condenser and an inlet of the oxygen-enriched air storage tank, an inlet and an outlet of the coal mill are respectively connected with a first outlet of the oxygen-enriched air storage tank and an inlet of the semi-gasification burner, and an outlet of the semi-gasification burner is connected with a nozzle of the semi-coke burner; semi-coke fuel is crushed by the coal mill and then is fed into the semi-gasification combustor by taking oxygen-enriched air in the oxygen-enriched air storage tank as gasification background gas for stable combustion. According to the system, a coal-fired power plant, new energy power generation, coal-based solid waste utilization and the ecological restoration field are combined, the utilization rate of the coal-based solid waste is increased, the application field of the coal-based solid waste is expanded, a multi-element coupled energy system is constructed, and carbon emission is reduced.

This invention provides an air supply and dust removal device for high-temperature corrosion prevention and control in coal-fired power plant boilers, comprising a cyclone separator and a microporous filter. The cyclone separator includes a separation shell, an air inlet, an exhaust outlet, and a first ash discharge outlet. The separation shell has a cylindrical separation chamber, and the air inlet, exhaust outlet, and first ash discharge outlet are respectively connected to the separation chamber. The air inlet is located at the upper part of the separation shell and is tangent to the outer wall of the separation shell. The exhaust outlet is located at the top of the separation shell, and the first ash discharge outlet is located at the bottom of the separation shell. The microporous filter includes a filter shell and a microporous filter element. The filter shell has an air inlet and an exhaust outlet, with the air inlet connected to the exhaust outlet. The microporous filter element is disposed inside the filter shell. The cyclone separator performs primary dust removal of large particles in the secondary air, and the microporous filter performs secondary dust removal of small particles in the secondary air, thereby achieving the removal of both large and small particles of dust in the secondary air.

The invention relates to a method for optimizing and adjusting deep combustion of a tangential boiler of a coal-fired power plant, which comprises the following steps of: arranging pulverized coal burners at four corners of the lower part in a hearth of the tangential boiler or on a boiler wall, and arranging SOFA air nozzles at four corners of the hearth or on the boiler wall above the pulverized coal burners; sOFA air nozzles at four corners of a hearth or on a furnace wall are divided into two groups, the vertical swing angle of one group of SOFA air nozzles is inclined upwards, the vertical swing angle of the other group of SOFA air nozzles is inclined downwards, and a coal-fired power plant tangential boiler stable load deep combustion optimization and adjustment test is combined, so that the problems of residual smoke rotation at a stable load hearth outlet of the boiler and low smoke emission are effectively solved. The problems that the flue gas temperature deviation of a hearth outlet is large, the reheating steam temperature deviation is large, the low-load reheating steam temperature is low, the desuperheating water amount of a high-load reheater is large, the nitric oxide deviation of a denitration inlet is large, and the steam temperature or the wall temperature is overhigh are caused are solved, and meanwhile the low-nitrogen emission requirement is met.

The invention provides a subcritical unit rapid load increasing system and a load increasing method thereof, and relates to the technical field of coal-fired power plant boilers, the subcritical unit rapid load increasing system comprises a coal-fired power plant boiler and a pulverizing device which are connected; the hearth is directly connected with a combustion assembly, and the combustion assembly is provided with a high-position combustor, a main combustor and a low-position combustor. An economizer is arranged at the lower part of the hearth tail flue; an inlet flue of the economizer is communicated with an external combustion device; a feed port of the coal feeder is butted with a discharge port of the coal hopper, and a discharge port of the coal feeder is connected with the coal mill; the first outlet pulverized coal pipe is communicated with the pulverized coal separator, the second outlet pulverized coal pipe is communicated with the main burner, and a pulverized coal return main pipe on the pulverized coal separator is communicated with the coal mill; a pulverized coal returning branch pipe on the pulverized coal separator is communicated with the pulverized coal returning storage hopper, a feeding port of the pulverized coal feeding and returning machine is in butt joint with a discharging port of the pulverized coal returning storage hopper, and a discharging port of the pulverized coal feeding and returning machine is connected with the coal mill. The problems that existing DCS control logic cannot change physical characteristics, and an independent pulverized coal storage bin is prone to explosion are solved, and the effect of rapid load rising is achieved.

The invention discloses a whole-process SCR denitration system, and relates to the technical field of coal-fired power plant boiler denitration systems. The system comprises a boiler and an SCR denitration reactor, the boiler and the SCR denitration reactor are connected through a flue, a boiler hearth is composed of a water cooling wall, the system further comprises a whole-process SCR denitration bypass system, and the whole-process SCR denitration bypass system comprises a bypass pipeline, a bypass ash discharging system and a bypass adjusting system; the bypass pipeline comprises a flue gas bypass interface, a denitration flue gas bypass branch pipe, a denitration flue gas bypass mother pipe and a denitration flue gas injection branch pipe; the bypass adjusting system comprises a turn-off baffle and an adjusting baffle. The whole-process investment of the SCR denitration system from boiler ignition to BMCR load can be realized, the investment time of the denitration system is shortened, the problem of flue gas nitrogen oxide pollutant emission during the period from boiler ignition to unit grid connection is solved, the nitrogen oxide emission is reduced, the pollutant emission level of a power plant is improved, and certain social and environmental benefits are achieved.

The invention discloses a coal-fired power plant boiler with a temperature adjusting structure, the coal-fired power plant boiler is a T-shaped boiler, convection vertical shafts are arranged on the two sides of the T-shaped boiler respectively, the convection vertical shafts are connected with a hearth through horizontal flues, two tail flues are arranged in each convection vertical shaft in parallel, and the tail flues are connected with the T-shaped boiler. A low-temperature reheater is arranged at the position, close to the hearth, of the tail flue, a low-temperature superheater is arranged at the position, away from the hearth, of the tail flue, and an adjustable flue baffle is arranged at the tail end of each flue. The invention further discloses a temperature regulation control method and system thereof, a boiler flue digital twinborn model is constructed for training to obtain an intelligent agent, boiler real-time state parameters are collected, a reward function is set for training a strategy network, and control actions are output based on the strategy network. The problems that the T-shaped furnace is small in temperature adjustment amplitude, adjustment lags behind and the response rate is low are solved, and quick response and stability of the temperature are achieved.

The invention provides a power station flue gas comprehensive heating system used for a coal-fired power station, and relates to the technical field of flue gas heating. The system comprises a flue gas temperature adjusting assembly, a desulfurizing tower, a fused salt heating assembly and an electric heater, the flue gas temperature regulating assembly comprises a first flue gas temperature regulator and a second flue gas temperature regulator; the first flue gas temperature regulator is communicated with an inlet of the desulfurizing tower and the coal-fired power plant; an outlet of the desulfurization tower is connected with an inlet of the second flue gas temperature regulator, an inlet of the fused salt heating assembly and an inlet of the electric heater, and the desulfurization tower is configured to be only communicated with the inlet of the fused salt heating assembly when light exists, only communicated with the inlet of the electric heater and the inlet of the fused salt heating assembly when electricity is abandoned, and communicated with the outlet of the electric heater when light does not exist and electricity is abandoned. The first flue gas temperature regulator is communicated with the second flue gas temperature regulator. According to the comprehensive heating system for the flue gas of the power station, the efficiency is improved, light and abandoned electricity resources are fully utilized, and the energy consumption cost is reduced according to a photoelectric adjustment flue gas heating mode.

The invention relates to the technical field of thermal power generation, and discloses a coal-fired power plant final-stage superheater wall temperature prediction method and system based on an improved wavelet time convolution network, and the method comprises the steps: obtaining the historical operation data of a plant-level monitoring information system, calculating the maximum information coefficient between each variable and the wall temperature, and obtaining the maximum information coefficient; selecting a variable with the maximum information coefficient greater than a preset threshold value as a key feature; constructing the key features and the wall temperature data at the current moment and the plurality of historical moments into model input features, and taking the wall temperatures at the plurality of future moments as model output features; constructing a wavelet time convolutional network model, wherein the wavelet time convolutional network model comprises an input layer, a wavelet decomposition layer, at least one hybrid expansion convolutional layer and an output layer which are connected in sequence; and training the wavelet time convolutional network model by using the model input features and the model output features to obtain a wall temperature prediction model. According to the method, the wall temperature of the final-stage superheater is predicted, an operator can take control measures in advance, and the overtemperature phenomenon is reduced.

The application discloses a kind of unmanned inspection and state diagnosis method and system deeply integrated in ACS.The method comprises: deploying fixed camera and mobile inspection robot in coal-fired power plant, performing near and far view coordinated layout, and constructing basic perception network;Obtain multi-source heterogeneous data and carry out space-time alignment and fusion, form multi-modal inspection data under unified space-time reference;Multi-modal data is input into equipment state diagnosis model pre-trained using transfer learning and domain adaptation strategy, and the output diagnosis result and abnormal positioning information;Inspection data and diagnosis result are deeply integrated into the ACS unified data platform of production control area through industrial real-time communication protocol, and are real-time fused with DCS time series data, and ACS directly triggers operation production decision according to fused data.The application breaks the isolation barrier between inspection system and control system, realizes inspection-diagnosis-decision closed loop self-healing, and significantly improves the intelligent level and operation safety of coal-fired power plant.

The invention discloses a method and a system for flexibly adjusting the powder output of a medium-speed coal mill in a direct-fired pulverizing system. The method for flexibly adjusting the powder output of the medium-speed coal mill in the direct-fired pulverizing system comprises the following steps of: arranging a powder storage bin outside the coal mill, and storing redundant coal powder in the powder storage bin when the output of the coal mill is excessive and the powder output is greater than the fuel demand of a boiler; and when the output of the coal mill is insufficient and the pulverized coal output amount is smaller than the fuel demand amount of the boiler, the pulverized coal stored in the pulverized coal storage bin is conveyed into a central coal falling pipe of the coal mill, and the pulverized coal enters the coal mill to be recycled and redistributed into each air powder pipe at an outlet of the coal mill. According to the method, rapid, accurate and dynamic matching of a fuel system and a combustion system in rapid peak regulation of a coal-fired power plant boiler is achieved, further, balance control over the pulverized coal concentration in all air powder pipes at an outlet of a coal mill can be achieved, the pulverized coal concentration regulation response speed is high, and control is convenient; and the device is simple in structure, small in size, small in occupied area, easy to modify and arrange on site, convenient to control and easy to popularize.

The utility model discloses a sewage power generation system and belongs to the technical field of sewage recycling. An impeller is arranged at a water outlet of a biochemical pool in the system, and blades are fixedly arranged on an impeller shaft. One side of the impeller shaft is connected with a gear input shaft, an input gear is arranged at the end of the gear input shaft, and the input gear is meshed with the output gear to drive the gear output shaft to rotate. The gear output shaft is connected to a planetary gearbox through an output coupler, the planetary gearbox is connected to a generator through a gearbox coupler, and an electric energy interface of the generator is connected to electric energy storage equipment. The hydraulic power generation does not consume fuel during operation, and the operation management cost and the power generation cost are far lower than those of a coal-fired power plant. Impurities in sewage are filtered out through the outlet filter screen, the influence of impact or winding of the impurities on the impeller is reduced, damage to the impeller is avoided, the service life is prolonged, and the service life is shortened. According to the system, high-efficiency power generation can be achieved with extremely low carbon emission, and the era requirements of environmental protection and green energy are met.

The present invention discloses a combined pneumatic conveying system for fly ash of a coal-fired power station, comprising a pneumatic dust collection and delivery system, a transfer system, a terminal ash unloading system and a fly ash loading system. The pneumatic dust collection and delivery system is connected to the transfer system through a first conveying pipe and a second conveying pipe, and the transfer system is connected to the fly ash loading system through a third conveying pipe, a fourth conveying pipe and a fifth conveying pipe. An air dispersion channel is formed between the first sleeve and the second sleeve, and the second sleeve is provided with a plurality of air dispersion holes arranged along the axial direction. An operation method is also disclosed. The combined pneumatic conveying system for fly ash of a coal-fired power station of the present invention utilizes various conveying pipes with air dispersion to combine the pneumatic dust collection and delivery system, the terminal ash unloading system and the fly ash loading system into a conveying system that is not prone to ash blockage and has low maintenance costs; the operation method of the present invention can ensure that various material conveying units using the same conveying line will not convey materials at the same time, and there will be no problem of overloading of the conveying pipeline.

The invention relates to the technical field of coal-fired power generation, and discloses a system and a method for carbon capture after combustion of a coal-fired power plant. The system comprises a boiler, a decarburization reactor, a calcium carbonate storage device, a solar auxiliary regeneration reactor, a calcium oxide storage device, a steam turbine, a condenser and a condensed water heater, flue gas from the boiler enters the decarburization reactor for decarburization; the decarburization reactor, the calcium carbonate storage device, the solar auxiliary regeneration reactor and the calcium oxide storage device are sequentially connected end to end; steam exhausted by the steam turbine after expansion acting enters the condenser to be condensed into water, part of condensed water exchanges heat with decarburized flue gas from the decarburization reactor in the condensed water heater, and the heated condensed water enters the high-temperature heating surface to be heated into steam for expansion acting on the steam turbine. According to the system, efficient utilization of solar energy and CaO chemical energy can be achieved, fossil energy consumption is reduced, and the system is simple.

The present invention discloses a method, system, medium and device for rapidly predicting the flue gas volume of a coal-fired power station in the technical field of carbon emission data monitoring, aiming to solve the problem that the existing technology cannot meet the actual requirements. Obtain the proximate analysis and ultimate analysis data of the coal fed into the furnace, as well as the operating condition data of the coal-fired power generation unit; according to the operating condition data of the coal-fired power generation unit, based on the trained and optimized unburned carbon content prediction model, obtain the predicted value of the unburned carbon content; according to the proximate analysis and ultimate analysis data of the coal fed into the furnace, the predicted value of the unburned carbon content and the oxygen content data in the flue gas in the operating condition data of the coal-fired power generation unit, based on the material balance in the coal combustion process of the boiler, calculate the predicted value of the flue gas volume of the coal-fired power station. The present invention effectively combines the material balance with the machine learning model to realize the rapid prediction of the flue gas volume of the coal-fired power station, with low cost, high precision, more flexible and reliable, and can help improve the reliability of the carbon emission monitoring data of the coal-fired power station.

This application provides a method, apparatus, and system for downloading control strategies for coal-fired power plants. The method includes collecting multi-source production data from the power plant, performing heterogeneous adaptation and standardization processing to generate standard data frames; loading the control strategy to be implemented into a shadow running unit, running it in parallel based on the standard data frames, and obtaining verification results; performing gray-scale downloading of the control strategy to be implemented under preset gating conditions; and real-time monitoring and execution of tiered rollback operations in case of abnormal situations. This application solves the problem of differences between offline simulation and the real operating environment by setting up a shadow running unit to run the control strategy to be implemented in parallel; by performing gray-scale downloading, it avoids the sudden operational risks caused by full write; furthermore, by real-time monitoring of the operating status and execution of tiered rollback operations, it can automatically and quickly handle abnormal situations, improving the safety and reliability of downloading control strategies for coal-fired power plants and reducing operational risks.

The invention provides a coal-fired power plant boiler heating surface ash on-line monitoring system and a detection method thereof, and relates to the technical field of boiler combustion. The system comprises an operation data module used for obtaining operation data; the smoke exhaust temperature prediction module is used for inputting the operation data into a latest trained smoke exhaust temperature prediction model to obtain predicted smoke exhaust temperature; the actual smoke exhaust temperature module is used for acquiring the actual smoke exhaust temperature; the corrosion dust accumulation judging module is used for determining whether corrosion dust accumulation exists on the heating surface of the low-temperature area of the boiler or not; the first ash deposition scoring module is used for determining a first ash deposition score; the second ash deposition scoring module is used for determining a second ash deposition score according to the actual exhaust gas temperature and the predicted exhaust gas temperature; the heating surface ash condition module is used for determining the heating surface ash condition of the coal-fired power plant boiler; and the blowing-out cleaning operation judgment module is used for determining whether blowing-out cleaning operation needs to be carried out or not. According to the invention, the ash deposition condition of the heating surface of the boiler can be detected according to the corrosion ash deposition condition.

The invention belongs to the technical field of coal-fired power plant energy storage, and particularly relates to a dry rock heat storage system coupled with a coal-fired cogeneration unit, the main equipment is a heat insulation storage device, dry rock, a built-in heater and an external coil heat exchanger are arranged in the heat insulation storage device, a power supply of the built-in heater is connected with a generator through a cable, and the external coil heat exchanger is connected with the power generator through a cable. Heat supply network circulating water flows out of the heat supply network circulating water pump, is connected to the heat insulation storage device for heating through the booster pump and the electric adjusting valve, and is connected to the rear end of the heat supply network heater through the electric adjusting valve after heating. The valve control is matched with heating of heat supply network circulating water, steam extraction of a heat regeneration system is reduced, the electric power of the coal-fired cogeneration unit is kept, meanwhile, the external heat supply amount is increased, the contradiction between deep peak regulation of the coal-fired cogeneration unit and the heating requirement of residents in winter is effectively relieved, and wide application prospects are achieved.

The utility model provides a kind of new coal-fired boiler biomass blending combustion system, including the air preheater being arranged in boiler, bypass flue is arranged on the boiler in the air preheater, the other end of bypass flue is connected biomass carbon making and crushing equipment, biomass carbon making and crushing equipment are connected with biomass raw material feed inlet, the outlet of biomass carbon making and crushing equipment is connected biomass carbon storehouse by biomass carbon conveying belt, the outlet of biomass carbon storehouse is provided coal feeder, the end of coal feeder is connected to pulverized coal burner by coal feeder falling tube, and pulverized coal burner is arranged in boiler.The utility model is made into the biomass carbon of convenient storage and transport by using power plant heat source to biomass raw material, according to boiler load requirement, by secondary air into pulverized coal burner, realize and boiler blending combustion.The utility model avoids the jam problem in the process of biomass fuel crushing and conveying, realizes coal-fired unit clean carbon reduction.The utility model can be applied in new coal-fired power station or active unit blending combustion modification.