48results about How to "Reduce coal consumption" patented technology

The invention provides a cement decomposing furnace temperature prediction control method based on a KAN enhanced neural network, and belongs to the technical field of cement calcination. A CNN-LSTM-KAN network is established as an f-CaO and Nox prediction model, and a state parameter optimization objective function is established in connection with actual production requirements; and solving an optimal solution and an optimal solution interval of the state parameters of the decomposition furnace through a multi-target particle swarm optimization algorithm. A KAN-Enhanced-Informer network is established to predict the temperature of the decomposition furnace, a target function is established by combining a state optimization result with the more accurate prediction result, the less coal consumption and the reasonable alternative fuel quantity as targets, the optimal solutions of the coal feeding quantity and the alternative fuel quantity are obtained, and the optimal solutions are applied to a control model to ensure that the temperature of the decomposition furnace reaches the optimal set value. The problems that in the actual cement production process, energy consumption is too high, the yield is not ideal, and much sewage is discharged are solved.

The invention relates to the technical field of multi-energy complementary power generation, and discloses an industrial steam supply peak shaving system and method coupling fused salt heat storage and solar energy, and the industrial steam supply peak shaving system comprises a coal-fired power generation system and an industrial steam supply system; in the heat storage mode, the boiler, the steam cooler and the condenser are sequentially connected; in the heat release mode, the high-pressure heater, the primary feed water heater and the low-pressure cylinder are sequentially connected through pipelines; and the feed pump, the secondary feed water heater and the boiler are connected in sequence. In the low ebb of the electrical load, solar energy is used for heating fused salt to store heat, and part of high-temperature steam is extracted from steam-water circulation of the improved coal-fired power generation system to store the heat in a heat storage device and does not enter a steam turbine for power generation; the power load output is adjusted by adjusting the thermal load output of the thermodynamic system in the power generation process, and load decoupling of the boiler and the steam turbine is achieved. And in the electrical load peak, the stored heat energy is released back to steam-water circulation, and the electrical load of the coal-fired power generation system is increased.

The invention discloses a pebble coal waste heat utilization system and method of a coal-fired unit coupled heat insulation furnace, and belongs to the technical field of energy utilization and energy conservation. Comprising a heat insulation furnace body, a pebble coal crushing unit, an air supply unit, a diesel oil ignition unit, an ash blowing unit, a high-temperature flue gas mixing unit and an ash slag unit, wherein the pebble coal crushing unit, the air supply unit and the diesel oil ignition unit are connected with the feeding end of the heat insulation furnace body; the ash blowing unit and the high-temperature flue gas mixing unit are connected with the flue gas outlet end of the heat insulation furnace body; and the compressed air unit is respectively connected with the heat insulation furnace body, the soot blowing unit and the air supply unit. Based on the stable combustion characteristic of an adiabatic furnace, pebble coal is crushed and then combusted through the adiabatic furnace, after combustion, the pebble coal is mixed with a hot secondary air system of a pulverized coal furnace through hot flue gas, meanwhile, an effective pebble coal treatment mode and hot secondary air temperature rising are provided, solid waste treatment of a unit is achieved, and the flexibility of the unit is improved.

The invention discloses a liquid catalyst for improving coal combustion efficiency, belongs to the technical field of coal chemical industry, and is used for improving the combustion rate and efficiency of coal in a high-temperature environment and reducing emission of harmful gases such as carbon oxides. The catalyst comprises pure water, sodium chloride, lanthanum nitrate, cobalt nitrate, nickel nitrate, zinc chloride, magnesium chloride, calcium chloride, copper chloride, ferric citrate, sodium acetate, potassium iodide, urea, citric acid, potassium hydroxide and other components, can be kept in a liquid state at normal temperature, forms a stable catalyst layer on the surface of coal particles, and is suitable for different coal types and combustion devices. When in use, the catalyst is added into pulverized coal or coal slurry through a continuous atomization device to ensure that the catalyst is uniformly distributed on the surfaces of coal particles to form a multi-phase dynamic catalytic oxidation system.

The utility model relates to a WSC boiler tail convection heating surface flue gas temperature adjusting device which comprises a flag-shaped pipe heat exchanger water side bypass pipeline, a valve set, a first adjusting valve, a second adjusting valve and a third adjusting valve are arranged on the flag-shaped pipe heat exchanger water side bypass pipeline, one end of the first adjusting valve is connected with an inlet of a boiler water inlet collecting box, and the other end of the first adjusting valve is connected with an outlet of a boiler water outlet collecting box. The other end of the first adjusting valve is connected with the valve set and the second adjusting valve, the other end of the second adjusting valve is connected with the third adjusting valve, an outlet of the flag-shaped pipe upper header and an inlet of the economizer distribution header, and the water side bypass pipeline is connected with the heat supply network water return pipeline through the valve set. The utility model has the advantages that the pressure is set by the pressure sensor, the pressure is controlled to adjust the opening of the bypass valve, the pressure is limited to adjust the opening amplitude of the bypass valve, and the amount of water entering the heating surface of the boiler is controlled according to the closing temperature, so that the vaporization heat absorption intensity of the heating surface of the boiler can be controlled, and the vibration amplitude of the boiler caused by the reduction of water flow is reduced.

The invention discloses an implementation method of a single auxiliary machine steam pump RB of a circulating fluidized bed unit, which comprises the following steps: after the steam pump trips, the action condition of the steam pump RB: opening a front electric door and a rear electric door of a boiler water supply bypass adjusting door when the RB acts; when the RB acts, the current of the electric pump is 200A and the outlet pressure of the electric pump is more than 20MPa, an outlet regulating valve of the electric pump is opened to 35%; coordinating to a turbine following TF mode, and forcibly switching a unit operation mode to a sliding pressure mode; after RB occurs, AGC is automatically cut off, meanwhile, an instruction is sent to a DEH system, and a sequence valve is cut into a single valve; and when the load of the unit is reduced to the target load for 3 seconds or the operator presses down a steam pump RB ending button, the RB process is ended. The system has the advantages that after the single steam pump trips, the unit load is changed to the target load without manual intervention of an operator, so that the operation intensity of the operator in an accident state is greatly reduced, and the probability of misoperation of the operator is reduced; the load range of a boiler BT is increased from 80MW to 160MW when a steam pump trips out, so that a larger safe and stable operation space is provided for a unit; bT accidents are avoided, and the purpose of saving coal consumption is achieved.

The application discloses a zero-carbon waste heat recovery system and method for a direct air-cooling unit, which comprises an air cooling island, a chemical water supplement pipeline, an air source heat pump, a photovoltaic power generation system, an energy storage system and a control unit. Dry hot air with a temperature of 20-50 DEG C discharged by the air cooling island is used as a low-temperature heat source, and the air source heat pump uses the waste heat to heat the chemical water supplement to 35-45 DEG C and then sends the chemical water supplement into a condenser or a hot well. The photovoltaic power generation system is installed on the windbreak wall around the air cooling island and is matched with the energy storage system to provide zero-carbon power for the air source heat pump. The control unit is in communication connection with a power plant DCS system. The application realizes zero-carbon emission of the water supplement heating link, effectively recovers the waste heat of the air cooling island, reduces coal consumption and power consumption of the unit, improves operation efficiency, has low modification difficulty and high safety, and is suitable for energy-saving modification of the direct air-cooling unit in the northwest region.

The invention provides a thermal power poly-generation system integrating waste heat recovery and pump heat energy storage. The thermal power poly-generation system comprises a combined heat and power generation system, and a flue gas waste heat utilization system exchanges heat with flue gas of the combined heat and power generation system and recovers flue gas waste heat; the pump heat energy storage system comprises a heat pump and a heat storage system, the heat storage system is connected with the combined heat and power generation system and the flue gas waste heat utilization system through pipelines for heat exchange through the heat pump, and the heat storage system is further electrically connected with the combined heat and power generation system for heat storage. The flue gas desulfurization waste heat recovery system is arranged on the tail flue of the boiler, so that the flue gas waste heat can be effectively recovered, and the coal consumption of a unit is reduced; cold energy supply can be achieved through the pump heat energy storage system, meanwhile, surplus electric energy and waste heat are converted into high-temperature heat energy to be stored in a high-temperature storage tank, the high-temperature heat energy is released when needed to generate steam, the steam is reinjected into a steam turbine thermodynamic system, the thermoelectricity operation interval is widened, the unit variable load rate is increased, and the power generation efficiency is improved. The operation regulation capability of the combined heat and power generation system is enhanced, and more flexible regulation and control means are provided.

The invention discloses a header system unit thermoelectric load distribution method, system and device based on a big data algorithm and a medium, and relates to the technical field of thermoelectric load distribution, and the method comprises the steps: determining a steam turbine type, and selecting a mathematical model according to the steam turbine type; after related parameters are obtained according to a steam turbine type analysis mechanism, data of the related parameters are exported from an SIS system, and the exported data are historical data of one year; cleaning the exported data to obtain historical data of a stable working condition; on the basis of the historical data of the stable working condition, a steam consumption characteristic curve of each steam turbine of the header system heat supply unit is fitted; and analyzing the steam consumption characteristic curve, carrying out mathematical modeling by adopting a linear programming method, and solving the model to obtain an optimal distribution scheme. According to the method, optimization recommendation can be carried out in real time according to the heat load and the electric load of the header unit, and the coal consumption reduction degree can be obtained according to the obtained optimization result through a big data algorithm and a mathematical modeling method.

The present invention discloses a grate cooler inflatable beam pressure stabilizing and wind control device, comprising a first silent pressure diffuser, a flow stabilizing tube, a second silent pressure diffuser, a rectifier pressure stabilizing tube and a pressure dividing tube; the first silent pressure diffuser and the second silent pressure diffuser are both arranged in a V-shaped structure, the large end of the first silent pressure diffuser is connected to the small end of the second silent pressure diffuser through the flow stabilizing tube, and the large end of the second silent pressure diffuser is connected to at least two of the pressure dividing tubes; a rectifier pressure stabilizing impeller is arranged in the rectifier pressure stabilizing tube, a main shaft is fixedly installed in the middle of the rectifier pressure stabilizing impeller, the main shaft is rotatably installed in the rectifier pressure stabilizing tube, a driving motor and a reducer are fixedly installed on the outside of the rectifier pressure stabilizing tube, the output shaft of the driving motor is connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the main shaft. The device has a simple structure, is easy to process and manufacture, and the wind pressure of the wind blown out from the pressure dividing tube is uniform and stable.

The invention relates to a low-carbon high-belite / high-iron phase mineral material as well as a preparation method and application thereof, and the low-carbon high-belite / high-iron phase mineral material comprises the following raw materials in parts by mass: 90-110 parts of a calcium raw material, 0-26 parts of a siliceous raw material, 2-29 parts of an aluminum raw material, 7-45 parts of an iron raw material and 1-5 parts of a sintering additive. A calcium raw material, a siliceous raw material, an aluminum raw material and an iron raw material are used as main raw materials, the low-carbon high-belite / high-iron phase mineral material is generated by regulating and controlling the proportion of the raw materials and under the action of a firing additive, the content of belite and iron phase in the mineral material is high, and the mineral material also contains part of alpha '-type dicalcium silicate with high gelation activity; the cement admixture can be used as a cement admixture to be combined with cement clinker to grind cement or be used as an admixture to be directly added into concrete, so that the high compressive strength of the concrete is maintained, the hydration heat release is reduced, the crack resistance is improved, and the chloride ion penetration resistance is enhanced.

The present invention relates to the technical field of auxiliary devices for reaction furnaces, and in particular to a coal-adding flap material-distributing device for a fixed-bed gasifier at normal pressure, comprising a rotating shaft, a flap, a handle, a fixing member and three positioning structures. The rotating shaft rotates and penetrates through the side wall of the coal distributor, and is rotatably connected to the furnace top cover. The flap cover is arranged on the material discharge port and is fixedly connected to the rotating shaft; the handle is fixedly connected to the end of the rotating shaft extending outside the coal distributor; the three positioning structures are respectively arranged at the top, middle and bottom of the outer wall of the coal distributor, the fixing member and the three positioning structures are all detachably connected, the handle can be clamped with the fixing member, and by installing the fixing member in different positioning structures and clamping the handle in the fixing member, the flap can be rotated and fixed to adjust the opening state of the corresponding material discharge port. The present invention can manually adjust the generator to appropriately discharge more coal in the direction of the furnace during the coal-adding process, adjust the gasification intensity, so that the material layer is evenly distributed, and reduce furnace deviation and flaming.

The invention discloses a chemical looping system coupled with a high-capacity thermal power generating unit, which comprises an air reactor, the upper part of the air reactor is connected with a first gas-solid separator, the lower part of the first gas-solid separator is connected with a first material returning device, the first material returning device is connected with a fuel reactor, and the fuel reactor is connected with an overflow pipe; the overflow pipe is connected with the lower part of the air reactor; the air reactor and the fuel reactor are filled with oxygen carriers; and the upper part of the fuel reactor is connected with the CO2 purification device. The device has the beneficial effects that high-concentration CO2 can be enriched, and carbon emission of a thermal power generating unit is reduced; waste heat of a chemical chain can be recycled through a unit condensate water system, and coal consumption of the unit is not increased; normal operation of the thermal power generating unit is not affected if the chemical chain is put into operation.

The utility model discloses a kind of power station boiler dry slag machine furnace bottom air leakage management devices, specifically related to the field of energy saving and emission reduction of power station boiler, including dry slag machine body, its furnace bottom air leakage is led out through cooling air exhaust interface, furnace bottom air leakage exhaust interface, tail air leakage exhaust interface;Connection pipe;Air blower one, air blower two;Booster fan;Secondary air box outlet;Slag bin, slag discharge room;Transition slag hopper.The power station boiler dry slag machine furnace bottom air leakage management device described in the utility model, by the redesign of the way that traditional dry slag machine cooling air enters hearth, solve the dry slag machine cooling air that is completed heat exchange with furnace bottom slag, as furnace bottom air leakage directly enter hearth to the disturbance of combustion, change dry slag machine cooling air from disordered furnace bottom air leakage to orderly air by secondary air, can effectively improve the stability of hearth combustion, reduce flue gas temperature, reduce fly ash combustible carbon content, thereby improve boiler efficiency, reduce coal consumption.

The invention discloses a steam waste heat recovery device for industrial power generation, comprising a steam furnace, a combustion furnace, a first heat exchange box, a second heat exchange box and a filter box. The combustion furnace, the first heat exchange box, the second heat exchange box and the filter box are all installed on the top of a base, and the steam furnace is installed on the top of the combustion furnace. The system can recover the steam waste heat after power generation, so as to heat the water in a water tank, and automatically replenish the steam furnace with the hot water in the water tank, so that the water level in the steam furnace is always maintained at a constant level, which not only speeds up the water heating speed, but also prevents dry burning, and can fully utilize the steam waste heat. The steam heated in the water tank is heated by a heat exchange tube, and then the heat on the heat exchange tube is transported to the combustion furnace by a fan, so as to increase the heat of the combustion furnace, save coal consumption, and reduce costs. Finally, the steam is transported to the combustion furnace after filtering out water droplets through a filter, so as to improve the combustion efficiency.

The utility model relates to the field of low-pressure bypass systems, in particular to a low-pressure bypass system matched with deep peak regulation of a unit, which comprises a valve seat main body, a valve seat valve core is mounted in the valve seat main body, a pre-starting valve changing gasket is arranged on the outer wall of the valve seat valve core, and a valve seat connecting pipe is arranged on the other side of the valve seat main body. A valve flow pipe is arranged on one side of the valve seat body, and a flow adjusting hole is formed in the valve flow pipe. According to the utility model, the valve core protective sleeve is arranged, and the low side valve core is transformed into the valve core with the protective sleeve, so that wet steam of the valve can be prevented from being directly scoured on the valve core, the special protective sleeve is arranged on the valve core, the valve core is reliably prevented from being damaged by blowing, the problem of inner leakage of deep peak regulation low side scour is solved, the coal consumption of a unit is reduced, and the efficiency of the unit is improved; the safety reliability and peak regulation flexibility of the system are improved after transformation, and safe and stable operation of the unit is guaranteed.

The utility model relates to a honeycomb-structured compound wear-resistant block for a heating surface of a circulating fluidized bed boiler, belonging to the technical field of wear resistance of the heating surface of the circulating fluidized bed boiler. Abrasion of a heating surface of the circulating fluidized bed boiler is relieved, and the heat absorption capacity of the heating surface can be improved. According to the technical scheme, the honeycomb structure compound anti-abrasion block for the heating surface of the circulating fluidized bed boiler comprises outer rib plates and inner rib plates, 18 outer rib plates form a polygonal peripheral structure, and 12 inner rib plates evenly divide the polygonal peripheral structure formed by the outer rib plates into seven regular hexagons. Meanwhile, three rows of longitudinal pipe clamping grooves are formed in the outer rib plates and the inner rib plates in parallel, the pipe clamping grooves are semicircular, the included angle between the inner rib plates and the outer rib plates is 120 degrees, the included angle between the outer rib plates is 120 degrees, the included angle between the inner rib plates is 120 degrees, the width of the inner rib plates and the outer rib plates is 5-100 mm, the arc radius range of the pipe clamping grooves is 16-40 mm, and the rare earth alloy heat-resistant steel is cast and formed.

The utility model belongs to the technical field of multi-stage water seal systems, and particularly relates to a dispersedly-arranged adjustable heat dissipation type water seal which comprises a shaft seal heater, a main pipeline, a fixed water seal assembly, an adjustable water seal assembly, a condenser and a DCS. A shaft seal heater, a shaft heater drain outlet valve, a fixed water seal assembly, an adjustable water seal inlet manual valve, an adjustable water seal assembly, an adjustable water seal outlet manual valve and a condenser are sequentially connected to a pipeline of the main pipeline. The fixed water seal assembly comprises a fixed first-stage water seal, a fixed second-stage water seal, a fixed third-stage water seal and a fixed fourth-stage water seal which are sequentially arranged on the main pipeline, and the adjustable water seal assembly is arranged, so that the height of the water seal can be effectively adjusted quickly, accurately and reliably according to the vacuum change of a unit during operation; the problem that vacuum of a unit is affected by air leakage of the water seal in operation is solved, vacuum of the condenser is effectively improved, coal consumption of the unit is reduced, and the device has important significance for safe and economical operation of the unit.

The invention provides a high-efficiency coal-saving catalyst and a preparation method thereof. The high-efficiency coal-saving catalyst is prepared from the following raw materials: coal-saving composite powder and organic activation dispersion liquid, according to the efficient coal-saving catalyst disclosed by the invention, through the interaction of the coal-saving composite powder and the organic activation dispersion liquid, the efficient coal-saving catalyst enhances the activity of the surface of coal, lowers the ignition point of the coal, improves the combustion efficiency, reduces the coal consumption and reduces the emission of sulfur dioxide and nitrogen oxide; the device is suitable for various large, medium and small civil and industrial coal-fired boilers.

The application discloses a process method for preparing SO2 coupling cement clinker production by decomposing phosphogypsum, which comprises the following steps: feeding the mixture of phosphogypsum and coal into a reduction furnace through a feeding device, and partially reducing the phosphogypsum into CaS; feeding the material at the outlet of the reduction furnace into a roasting furnace, and reacting the CaS and CaSO4 at high temperature to generate CaO and SO2; directly feeding the high-temperature CaO from the roasting furnace into a rotary kiln, and simultaneously adding clay, iron powder and coal into the rotary kiln; heating the rotary kiln to high temperature by using the waste heat of the CaO and the heat released by the combustion of the coal; firstly passing the high-temperature flue gas generated by the rotary kiln through a burn-out chamber, and then passing the high-temperature flue gas into a flue gas waste heat recovery boiler to perform heat exchange; and discharging the flue gas after dust removal by a high-temperature dust remover. After the reaction is completed, the high-temperature clinker is fed into a slag discharge waste heat recovery boiler to recover the waste heat. By using the application, the energy consumption, production cost and carbon emission amount of the cement clinker production can be greatly reduced, and the efficient and clean comprehensive utilization of the phosphogypsum can be realized.

The utility model relates to an efficient coal-fired generator set. The coal power unit comprises a boiler, a high-pressure cylinder, a back pressure machine and a feed water heating assembly. The steam output end of the boiler is connected with the steam input end of the back pressure machine; the steam output end of the back pressure machine is connected with the steam input end of the high-pressure cylinder; the first steam circulation area of the back pressure machine is smaller than the second steam circulation area of the high-pressure cylinder; the steam output end of the back pressure machine and the steam output end of the high-pressure cylinder are respectively connected with the feed water heating assembly so as to output steam to the feed water heating assembly; the feed water heating assembly is connected with the feed water end of the boiler so as to output feed water heated by steam to the boiler. The coal consumption of the coal power unit can be reduced.

The invention discloses a heat pump electricity storage system and method for coupling flue gas waste heat utilization and hydrogen fixation ammonia production, and the system comprises a solar heating device, a water electrolysis hydrogen production device, an ammonia synthesis device, a heat pump circulation device, a heat storage circulation device, and an organic Rankine cycle and carbon capture circulation device. The solar heating device, the water electrolysis hydrogen production device, the ammonia synthesis device, the heat pump circulating device, the heat storage circulating device and the organic Rankine cycle and carbon capture circulating device are connected in sequence; heat energy in flue gas waste heat is transferred into a working medium through electric driving, then the heat energy is stored in a high-grade heat energy form, when electric energy needs to be used, the stored heat energy is converted back to the electric energy, energy conversion and storage are achieved, the energy utilization efficiency is improved, utilization of renewable energy sources is supported, the load of a power grid is balanced, and the service life of the power grid is prolonged. The flue gas waste heat of the thermal power plant is recycled, the power generation efficiency of the power plant is improved, and coal consumption is reduced.

The invention relates to a wind-light-fire ammonia system power margin optimization scheduling strategy for recovering ammonia production waste heat, and provides a thermal power generating unit-ammonia energy system and a waste heat recovery overall power regulation margin model thereof in order to solve the problems that the total energy abandoning amount of renewable energy is increased and the system power regulation margin is insufficient. And then considering the influence of the environment temperature on the waste heat recovery efficiency of the ammonia energy system, constructing a double-layer optimization scheduling model taking the maximum power regulation margin of the wind-light-fire-ammonia combined system as an upper layer target and the minimum total cost as a lower layer target, improving the power regulation margin of the combined system, and promoting the consumption of renewable energy sources.

The present application relates to the technical field of steam boiler, disclose a kind of photo-thermal and coal-fired unit coupling system and its control method, comprising: solar module and high-temperature heat pump module and molten salt heat storage module and coal power coupling module connected in sequence;Solar module includes solar light condensing and heat collecting unit and solar steam generating unit, output steam is transported to high-temperature heat pump module by energy transport module;High-temperature heat pump module includes steam-air heat exchanger and molten salt-air heat exchanger, steam enters high-temperature heat pump module by steam-air heat exchanger, and then is transported to molten salt heat storage module by molten salt steam heat exchanger;Molten salt heat storage module is connected with coal power coupling module by its internal molten salt heat storage steam generating unit, and the superheated steam generated by it is connected with coal-fired boiler main steam pipeline.Solve the problem of low thermal efficiency, poor peak shaving flexibility and large energy transmission loss in the prior art, achieve the purpose of efficient energy conversion, reduce coal consumption and small energy transmission loss.

The utility model discloses a sudoku structure compound anti-abrasion device of a circulating fluidized bed boiler, and belongs to the technical field of abrasion prevention of heating surfaces of circulating fluidized bed boilers. The technical problem to be solved is that the heated surface of the circulating fluidized bed boiler is abraded and insufficient. According to the technical scheme, the sudoku structure compound anti-abrasion device of the circulating fluidized bed boiler comprises nine sudoku structures and four installation positioning holes, two pipe clamp structures and welding feet are symmetrically arranged on the four edges of the center sudoku structure, the sudoku structures can be planes or cambered surfaces, the angle range of the outer surface is 0-45 degrees, and the angle range of the inner surface is 0-45 degrees. Four positioning holes are formed in the center of the grid structure, the radius range of the positioning holes is 3-10 mm, the radius range of the pipe clamp structure is 16-35 mm, the width range of the grid structure is 5-120 mm, the number of the welding feet is 1-2, and the grid structure, the mounting positioning holes, the pipe clamp structure and the welding feet are all integrally cast and formed by rare earth alloy heat-resistant steel.

This invention belongs to the field of energy consumption technology of rotary kilns for lime, and particularly relates to a method for reducing the heat loss of the rotary kiln shell, including the following: (1) optimizing the refractory material of the rotary kiln shell; (2) stabilizing process parameters: CO concentration at the kiln tail, set output of the rotary kiln, and unit heat consumption; (3) adjusting the operating basis and standards: ① Rotary kiln shell infrared temperature measurement standard: 200~240℃; Rotary kiln shell material filling rate standard: 8~10%; Burner flame temperature 1400~1500℃; ② If the rotary kiln shell infrared temperature exceeds the standard by ±10℃, increase the rotary kiln shell material filling rate and burner axial flow air volume; If the rotary kiln burner flame temperature exceeds the standard by ±25℃, increase the burner axial flow air volume; (4) Verify whether the adjustment range and direction are correct based on the real-time detection curves of the rotary kiln shell temperature and the rotary kiln burner flame temperature. This method reduces the temperature of the calcination zone of the rotary kiln shell and reduces the heat loss of the rotary kiln shell by increasing the coating and adjusting the operating basis and standards.

A thermal power side BDS multi-storage complementary system based on machine-furnace decoupling is provided with a thermal power machine-furnace decoupling module, a thermal energy storage module and an electric energy storage module. The fire engine-boiler decoupling module meets deep peak regulation after engine-boiler decoupling and can generate large-flow high-parameter quality steam; the heat energy storage module is connected into the boiler water supply system, and the decoupled high-parameter quality steam is connected into the heat energy storage module; the electric energy storage module and the kinetic energy storage module are accessed by plant power and / or network power; the machine-furnace decoupling system is superposed with fused salt energy storage, and the electric energy storage module and the kinetic energy storage module can be combined and applied to the thermal power plant and cooperate with each other to play a unique role, so that a multi-storage complementary long-time, high-efficiency and fast-response thermal power side energy storage system is provided for thermal power, the operation efficiency and stability of the thermal power plant are jointly improved, and the thermal power plant is protected. And the rapid scheduling requirement of the response power grid can be met.

The invention relates to the technical field of control, in particular to a coal power unit thermoelectric decoupling real-time optimization scheduling method and system based on model prediction control and a computer readable storage medium. The system comprises a data acquisition and processing layer used for acquiring key equipment data in real time through a data acquisition module and transmitting the key equipment data to a data preprocessing module for processing through a distributed control system, and a model prediction control core layer used for predicting the key equipment data through a constructed multivariable prediction model. Predicting equipment data of the cogeneration unit by taking the net power generation power, the heat supply load and the main steam pressure of the unit as controlled variables, generating an operation instruction based on a predicted equipment value, and performing prediction optimization on the unit instruction in a set period to obtain an optimal operation instruction; and the instruction execution and monitoring layer is used for sending the unit instruction to a corresponding control loop and monitoring key safety parameters of the unit in real time.

The invention relates to the technical field of flue gas waste heat recovery, and discloses a boiler waste heat utilization system based on different loads, which comprises a boiler, an air pre-heater, a secondary air heater and a No.7 low-pressure heater, the bottom of the boiler is connected with an air pre-heater, a bottom inlet of the air pre-heater is connected with a secondary air heater, and the bottom of the secondary air heater is connected with an air feeder; a bottom outlet of the air pre-heater is connected with the low-temperature economizer. An outlet of the low-temperature economizer is connected with the electric precipitator. A water inlet pipeline is arranged on one side of the seventh low-pressure heater, a water outlet pipeline is arranged on the other side of the seventh low-pressure heater, and a water inlet and outlet bypass is arranged between the water inlet pipeline and the water outlet pipeline and used for feeding water to the low-temperature economizer in a mixed mode through an inlet and an outlet of the seventh low-pressure heater. The seventh low-pressure heater is connected with the sixth low-pressure heater through a water outlet pipeline, a heat exchange pipeline is arranged between the low-temperature economizer and the secondary air heater, a conveying pipeline is arranged between the secondary air heater and the sixth low-pressure heater, and an air heater bypass is arranged between the heat exchange pipeline and the conveying pipeline. The low-pressure heater, the low-temperature coal economizer, the air pre-heater and the air heater are connected in series through a condensed water pipeline, and secondary air is heated by recovering waste heat of flue gas passing through the low-temperature coal economizer.

A fluidized bed gasification system for high-moisture lignite is disclosed. The outlet of the drying and pulverizing unit is connected to the inlet of the fluidized bed gasification unit. The outlet of the fluidized bed gasification unit is connected to the inlet of the sensible heat recovery unit. The outlet of the sensible heat recovery unit is connected to the inlet of the gas-solid separation unit. Part of the superheated steam discharged from the steam outlet of the sensible heat recovery unit goes downstream, and part of it enters the fluidized bed gasification unit together with oxygen. The outlet of the gas-solid separation unit is connected to the synthesis system. One outlet of the synthesis system discharges synthesis gas, and the other outlet discharges methane. The methane and air enter the hot air device for combustion to produce high-temperature flue gas, which enters the drying and pulverizing unit. The drying heat source of this invention comes from the combustion of methane produced by the system itself, and the steam required for gasification comes from the sensible heat recovery of the system's own synthesis gas. The material and energy coupling between each unit is close. This design reduces the dependence on external utilities and makes the device structure more compact.