411 results about "Heat consumption" patented technology

The invention provides a dynamic adjustment method and system for steam extraction energy storage and heat release in a thermodynamic system, and relates to the technical field of energy consumption adjustment, and the method comprises the steps: obtaining multi-dimensional operation parameters of the thermodynamic system and heat consumption demand data of a user side, predicting a steam load state in a specific time period in the future, and dynamically dividing a load time period according to the predicted steam load state; on the basis of the divided load time periods, steam extraction energy storage and heat release operation is carried out in the corresponding load time periods according to the optimal operation strategies of all the time periods; and continuously optimizing the load prediction model according to the deviation data, based on the optimized load prediction model, integrating the real-time operation state of the thermodynamic system, the actual heat consumption condition of the user side and the energy market price information, constructing a multi-target optimization model, and adaptively adjusting the operation parameters of steam extraction energy storage and heat release by using the multi-target optimization model. And dynamic adjustment of steam extraction energy storage and heat release in the thermodynamic system is realized.

The invention discloses a flexible heat supply network heat supply method and system considering regional load balance, and relates to the field of energy system optimization scheduling, and the method comprises the steps: uniformly deploying flow sensors in a heat supply network, installing an intelligent heat meter on a heat supply pipeline of each user, and directly measuring the heat actually used by the user; collecting heat consumption demand data of each user in real time; historical load data and data collected in real time are utilized, weather forecast and a time period are combined, the load capacity of each area is calculated by setting an area load fluctuation trend algorithm, and the heat demand of each area user is predicted; and a heat supply pipe network regulation and control algorithm is set based on the heat requirements of the users in all the areas and the load capacity of the load data, and heat supply balance between the different areas is adjusted. The problem of excessive or insufficient heat supply of some areas is avoided, reasonable distribution of heat supply requirements of all the areas is ensured, and the stability and reliability of overall heat supply are improved.

The invention relates to a centralized heating balanced regulation and control method, device and equipment and a medium. The method comprises the steps that firstly, the heat supply area of a user and the heat use state of a neighbor are collected, the basic flow of the jet device is calculated according to an industrial standard formula, and final flow containing resistance characteristic data is obtained through secondary correction by combining a neighbor heat use state correction coefficient and an environment temperature influence factor. Extracting flow and inlet and outlet pressure difference from jet device parameters, adjusting a valve to enable the resistance proportion to reach a preset interval, calculating parameters such as unit area heat consumption by combining real-time flow and supply and return water temperature difference, generating regulation and control basic data through coupling analysis, adjusting the jet device when the regulation and control basic data reach the standard, and generating a dynamic scheme by combining a thermal load prediction model. And finally, capturing the flow pulse signal according to a fixed period to calculate a difference value, generating a valve control signal according to a threshold value, acquiring the water supply and return temperature after execution, and coupling with a dynamic scheme to generate a regulation feedback signal. By adopting the method, accurate regulation and control can be realized through multi-dimensional analysis, and the flow distribution accuracy and the heat supply balance are improved.

Provided is a carbon dioxide capture system using heat pumps for waste heat recovery and utilization. In the system, waste heat recovery and upgrading are performed, by means of a first waste heat recovery heat pump, on a lean solution in a medium-temperature section that has been cooled by means of a lean-rich solution heat exchanger, and / or waste heat recovery and upgrading are performed, by means of a third waste heat recovery heat pump, on reaction waste heat of an absorption solution; and recovered waste heat is used for heating a medium-lean solution at the bottom of a desorption tower to perform carbon dioxide desorption, thereby realizing the recovery and full upgrading of low-grade waste heat, and thus achieving the aim of full utilization of low-grade waste heat. By means of a first coupled heat exchanger and / or a second coupled heat exchanger, the system further makes the working medium, which is obtained after recovered heat energy is reused for carbon dioxide desorption, further exchange heat with a split cold rich solution to preheat the cold rich solution, thereby realizing coupled utilization of energy inside the carbon dioxide capture system, and thus effectively reducing the heat consumption and operating costs of the carbon dioxide capture system.

The invention provides a thermal power generating unit operation initial pressure optimization method and device, and relates to the technical field of optimization control. The method comprises the following steps: acquiring working parameters of a thermal power generating unit in a use stage; and processing the working parameters in the use stage based on an optimized random forest model to obtain the main steam pressure flow when the heat consumption rate reaches the minimum value, and taking the main steam pressure flow at the moment as the initial pressure of operation of the thermal power generating unit. The device executes the method. According to the thermal power generating unit operation initial pressure optimization method and device provided by the embodiment of the invention, the response speed and the control precision of thermal power generating unit operation initial pressure control can be improved.

The invention discloses a cement kiln system heat consumption analysis method based on data analysis, and relates to the technical field of industrial data analysis, and the method comprises the following steps: collecting and preprocessing process operation parameters of a cement kiln system; based on a sliding time window and a two-stage clustering algorithm, time sequence analysis and working condition division are carried out on the process operation parameters, and a working condition feature library is established; based on the working condition feature library, establishing a heat consumption analysis base model and a heat consumption abnormal mode recognition rule library; and applying the heat consumption analysis base model to real-time operation data, and outputting a heat consumption analysis report in combination with the heat consumption abnormal mode recognition rule base. According to the method, the sliding time window and the two-stage clustering algorithm are introduced, a traditional cement kiln working condition division method is improved, time sequence correlation characteristics of process operation parameters can be better captured, system changes can be dynamically adapted, and accurate working condition division is achieved.

The bypass ventilation system comprises an air taking opening formed in a smoke chamber, a quench cooler, a cyclone dust collector, a bag dust collector, an ash bin and a pneumatic conveying device. The quench cooler adopts a volute structure, and an air inlet port of the quench cooler is connected with a quench fan; high-temperature flue gas passing through the quench cooler enters the cyclone dust collector, coarse particles in the flue gas are returned to the decomposing furnace by the cyclone dust collector, and relatively coarse particles are returned to the kiln tail, so that partial material consumption and heat consumption are reduced; fine particle dust separated by the cyclone dust collector enters a cloth bag dust collector to be collected, and clean air is directly discharged into a kiln tail chimney through an exhaust fan; ash collected in the cloth bag dust collector is firstly conveyed into the ash bin, and then the ash is conveyed to the steel bin at the clinker conveying belt or conveyed to the ash temporary storage bin of the water washing workshop and then is subjected to water washing. According to the bypass ventilation system, the skinning problem can be effectively relieved, and stable operation of a production line is guaranteed; and the quality of the cement is ensured.

The invention provides a control method and a hot water system, relates to the technical field of hot water systems, and solves the technical problems of high energy consumption, heat loss and excessive heat supply of the hot water system. The control method comprises the following steps that the load of a hot water system is predicted based on the preset daily total hot water consumption and predicted weather parameters of the second day; controlling the hot water system to start based on the predicted hot water system load; obtaining heating water tank internal parameters and solar water heating assembly water production parameters; adjusting the liquid level of the heat-preservation water tank based on the parameters in the heating water tank and the operation time of the hot water system; and switching the water production mode of the hot water system based on the water production parameters of the solar hot water assembly. The actual water supply temperature and the water production capacity of the main machine are adjusted based on future outdoor meteorological parameters and heat consumption changes, the load prediction function is achieved, the system energy consumption is reduced, different liquid levels are divided according to the hot water consumption and the daily time period, and the system energy consumption is reduced while the hot water consumption requirement is met.

The invention discloses a heat supply system for mine building heat supply and shaft freezing prevention, comprising: a heat collection module for collecting heat by using solar energy; the heat storage module exchanges heat with the heat collection module, is used for storing the heat source transferred by the heat collection module and can transfer the heat source to a heat terminal for the mining area building for heating around the clock; the power supply module is used for generating power by using solar energy and storing electric energy; and the wellhead heating modules are arranged at the shaft positions of the main inclined shaft and the auxiliary inclined shaft, and heat exchange is conducted between the wellhead heating modules and the heat storage module. The water source heat pump is used for heating the main inclined shaft and the auxiliary inclined shaft, comprehensive utilization of energy is achieved, a photovoltaic renewable power source is built in combination with the mining area space to provide clean power for mining area heat supply and power utilization systems such as the water source heat pump, and when the mining area power load and the heating load are low in the non-heating season, the water source heat pump can be used for heating the heat storage system. Zero-carbon heat supply for mine area building heat supply and shaft freezing prevention is achieved.

A control method for a phase-change energy storage type cold and heat combined supply system with a multi-heat source heat pump includes the following steps of: recording the temperature of a solar panel using solar energy as a heat source at a certain moment as tt, the temperature of a water source to be taken as ts, the temperature of a geothermal source as td, the temperature of an air source as tk; calculating the heat storage efficiency ζs, ζk and ζd of the phase change material under the action of solar energy-water energy, solar energy-air source and solar energy-ground source; calculating the hourly heat storage capacity of the heat pump Qrb, comparing it with the total hourly heat consumption of the system Qtol, and if Qrb<1.45Qtol, regulating the use of various heat sources through the heat storage integrated regulation system until Qrb<1.45Qtol.

The invention discloses a hydraulic intelligent balance regulation and control method and platform for multiple systems of a heat exchange station, and relates to the technical field of hydraulic balance of central heating systems, and the method comprises the steps: obtaining the real-time operation data of multiple heating systems of the heat exchange station, calculating the heat consumption data of a unit area, analyzing the hydraulic unbalance, and obtaining a hydraulic supply state parameter set; temperature change parameters of the heat exchange station are monitored, and a climate compensation adjustment curve is constructed in combination with hydraulic unbalance indexes; collaboratively optimizing the two to generate a multi-system valve control instruction set; adjusting and monitoring according to the instruction set and then feeding back and backtracking, and constructing a hydraulic balance regulation and control strategy to realize intelligent control. The technical problems that due to the fact that regulation and control of the multiple heat supply systems of the heat exchange station are lack of pertinence and collaboration and inaccurate in state judgment, heat supply is uneven and energy consumption is too high are solved, and the technical effects that the operation states of the multiple systems of the heat exchange station are precisely controlled and cooperatively adjusted, heat supply balance is improved, and overall energy consumption is reduced are achieved.

The invention relates to a method and a system for producing ceramsite by comprehensively utilizing coal-based solid waste. The method specifically comprises the following steps: 1) a two-step pelletizing process; 2) fluidized drying and preheating process; 3) a fluidized cooling process; and 4) application of the biomass fuel in ceramsite production. The method has the advantages that (1) when the coal-based solid waste is treated in the prior art, the (air dry basis) proportion is about 60%, and the coal gangue proportion can be increased to 70%-95%; (2) the cylinder compressive strength of the coal-based high-strength ceramsite produced in the prior art is mostly 3.0-10.0 MPa, and the cylinder compressive strength can be improved to 12.0-25.0 MPa by applying the technology, so that the requirements of the high-strength ceramsite are easily met; (3) the heat consumption (the product of the mass consumed by unit ceramsite and the accumulated value of the heat value of the ceramsite) in the prior art is averagely about 4500 KJ / kg, and the firing heat consumption of the ceramsite is reduced to below 2781 KJ / kg; and (4) the main fuel of the invention is biomass fuel which is a clean and renewable energy form.

The invention discloses an immersion phase change cooling device and cooling method for a net-forming type energy storage converter. The device comprises a power module phase change cooling unit, a condensation module, a liquid storage tank and a heat exchanger, the power module heating element is soaked in a refrigerant of the power module phase change cooling unit, the refrigerant absorbs heat and is heated to generate phase change vaporization, and a liquid refrigerant is converted into a gas refrigerant to be used for reducing the temperature of the power module heating element. A gaseous refrigerant flows to a condensation module, the condensation module exchanges heat with the gaseous refrigerant, so that the gaseous refrigerant is converted into a liquid refrigerant through phase change, and the liquid refrigerant flows to a heat exchanger and exchanges heat with air in the cabinet to reduce the temperature of elements in the cabinet; and the liquid refrigerant continues to flow into the power module phase change cooling unit to cool the power module, so that the immersion phase change cooling circulation process of the structure network type energy storage converter is realized. According to the invention, through phase-change heat exchange, the heat dissipation problem of sudden increase of heat consumption caused by short-time multi-time overload of the grid-forming type energy storage converter is solved, and the heat dissipation efficiency and reliability are improved.

The utility model provides a waste heat utilization module for a carbon dioxide capture system and the carbon dioxide capture system for waste heat recovery and utilization, wherein the carbon dioxide capture system comprises the waste heat utilization module. The waste heat utilization module utilizes a working medium steam compression device to compress and heat working medium steam carrying waste heat recovered from a carbon dioxide capture system into compressed working medium steam so as to improve the quality of the recovered waste heat, and then the compressed working medium steam is reused for medium barren liquor at the bottom of a desorption tower through a waste heat utilization device for carbon dioxide desorption. And the quality of the recycled waste heat is improved through compression, and efficient utilization of the waste heat is achieved. The carbon dioxide trapping system adopts the waste heat recovery heat exchanger to replace a traditional cooler, and realizes recovery, quality improvement and effective utilization of low-grade heat energy by utilizing a circulating working medium, so that sufficient recovery and utilization of internal energy of the carbon dioxide trapping system are realized; and the heat consumption and the operation cost of the carbon dioxide capture system are effectively reduced.

The invention provides a heat supply energy balance distribution metering method and system, and belongs to the technical field of heat supply distribution metering, and the method comprises the steps: obtaining the water supply flow G, the water supply temperature Tg, the water return temperature Th and the valve opening degree of a flow temperature collection regulator in each household; the total heat # imgabs0 # of the building large table is obtained; acquiring an actual room temperature value Tc of an indoor temperature control panel of each household; obtaining a current theoretical room temperature value Tn, wherein the theoretical room temperature value Tn is obtained through calculation according to a thermodynamic cycle heat transfer formula and a radiator heat dissipation formula; acquiring a temperature coefficient Mt, wherein the temperature coefficient Mt is a ratio of the actual room temperature value Tc to the theoretical room temperature value Tn; acquiring a flow temperature number M; heat of each branch pipeline is obtained, and charging is conducted according to the heat of the corresponding pipeline of each household; energy distribution of a heating power company is more balanced, balance regulation and control are carried out according to actual heat consumption, heat metering is carried out according to the actual heat consumption, regulation and control are more accurate, and metering is more accurate.

The invention discloses an immersion liquid cooling device of a net-forming type energy storage converter and a use method, and belongs to the technical field of high-voltage cascade energy storage, the device comprises a power module cooling unit, a first heat exchanger, a second heat exchanger and a liquid storage tank; cooling liquid is arranged in the power module cooling unit, the power module is soaked in the cooling liquid, and direct heat exchange of the power module is carried out. The power module cooling unit is connected with the first heat exchanger, the first heat exchanger is connected with one end of the liquid storage tank, the other end of the liquid storage tank is connected with the second heat exchanger, and cooling liquid flows into the second heat exchanger from the liquid storage tank for indirect heat exchange of electronic elements in the converter; and the second heat exchanger is connected with the power module cooling unit to form an immersion liquid cooling device. Through indirect heat exchange and direct heat exchange, the heat dissipation problem that heat consumption is increased due to short-time multi-time overload of the net-forming type energy storage converter is solved, and the problems that an existing converter is low in heat dissipation efficiency, complex in system, low in reliability and the like in cooling are solved.

The invention discloses a heat and power cogeneration user group energy efficiency optimization method and system based on bidirectional cooperation, relates to the technical field of heat and power cogeneration, and provides the following scheme that the method comprises the steps of setting a historical period, collecting historical electricity and heat consumption data of a user in the period, and constructing a strategy feature vector; the strategy feature vector comprises an electricity and heat utilization behavior feature, a demand response participation degree feature and an economic benefit feature; classifying the user strategy feature vectors by adopting a clustering algorithm, and identifying information island users and main group users; the method is based on historical electricity and heat consumption data of island users. Three-dimensional features of power utilization behaviors, demand response participation degree and economic benefits are extracted through historical power utilization and heat utilization data, strategy feature vectors are constructed, accurate description of the power utilization and heat utilization behaviors of users is achieved, limitation of traditional single-dimensional analysis is broken through, an accurate data basis is provided for user clustering and strategy optimization, feature recognition accuracy is improved, and user experience is improved. And the system can accurately analyze the electricity and heat utilization rule.

The utility model belongs to the technical field of heating and ventilation equipment, and provides a pipe network heat metering device for a heat exchange station, which comprises a main pipeline, a branch pipeline and a bypass pipeline, the main pipeline is provided with a main valve and a main heat meter matched with the main valve in pipe diameter, the branch pipeline is provided with a branch valve and a branch heat meter matched with the branch valve in pipe diameter, and the branch pipeline is provided with a bypass valve and a bypass heat meter matched with the bypass valve in pipe diameter; the pipe diameter of the branch pipeline and the pipe diameter of the bypass pipeline are both smaller than that of the main pipeline. According to the pipe network heat metering device for the heat exchange station, different pipelines can be switched according to different heat supply areas so as to adjust heat supply heat consumption, the heat meters are effectively guaranteed to operate under normal loads and working conditions by arranging the matched heat meters in the different pipelines, and therefore the accuracy of heat metering is improved, and the working efficiency is improved. And heat loss and resource waste caused by heat metering deviation are reduced, and the heat supply cost is reduced.

The invention discloses a method and a device for reducing firing heat consumption by using coal gangue, and relates to the technical field of cement production, the device for reducing firing heat consumption comprises a base, a kiln head seat, a kiln tail seat, a rotary kiln, a driving motor and a feeding mechanism, the kiln head seat is fixedly connected with the base, the kiln tail seat is fixedly connected with the base, and the feeding mechanism is fixedly connected with the rotary kiln. The kiln head seat and the kiln tail seat are sequentially arranged at the two ends of the rotary kiln in the material conveying direction, the driving motor is fixedly connected with the base, the output end of the driving motor is in transmission connection with the rotary kiln, the rotary kiln is rotationally connected with the base, the two ends of the rotary kiln are rotationally connected with the kiln head seat and the kiln tail seat respectively, and the feeding mechanism is fixedly connected with the kiln head seat. The feeding mechanism is used for feeding coal gangue into the rotary kiln.

The invention relates to the technical field of building energy, in particular to a building energy consumption prediction method and device.The method comprises the steps that a building energy consumption data set is obtained, and the building energy consumption data set comprises the electricity consumption, the water consumption, the heat consumption, the temperature, the humidity and the illumination intensity; preprocessing the building energy consumption data set to obtain a preprocessed building energy consumption data set; determining key features based on the preprocessed building energy consumption data set; based on the key features, determining a trained building energy consumption prediction model; and inputting the new building energy consumption data into the trained building energy consumption prediction model to obtain a predicted energy consumption result. According to the invention, accurate prediction and real-time monitoring of building energy consumption can be realized, the management efficiency is improved, and energy waste is reduced.

A collaborative optimization method for an Electric and Heating Networks (EHN) and a building user includes: establishing a coordinated optimization scheduling framework of the EHN and a building in a park; based on the coordinated optimization scheduling framework, constructing an optimal thermal power flow scheduling model of the EHN, and constructing a building model to simulate thermal characteristics and energy consumption of the building; based on the optimal thermal power flow scheduling model and the building model, taking the lowest operation cost of EHN and the lowest heat consumption of building user as a goal, constructing a collaborative optimization model of the EHN and the building user; outputting a collaborative optimization scheme of the optimal thermal power flow scheduling of the EHN and the heat consumption of the building user through the collaborative optimization model of the EHN and the building user.

The invention provides a satellite platform and load multi-dimensional nonlinear cooperative intelligent thermal management method and system. The method comprises the following steps: establishing a relation model; according to the relation model, constructing a satellite platform and load multi-dimensional nonlinear cooperative intelligent thermal management model; and solving the nonlinear collaborative intelligent thermal management model. According to the method, under the constraint of a load set working mode, load heat consumption and a whole-satellite thermal control heater are subjected to collaborative optimization adjustment in a time domain dimension, and the start-up time sequence and the start-up duration of a satellite load single machine and the thermal control heater serve as adjustment variables of whole-satellite thermal management at the same time; the advantages that the dynamic response of the load single-machine temperature to the load heat consumption is faster than that of a thermal control compensation heater and the steady-state response amplitude is larger are fully utilized, and compared with a conventional satellite thermal management method, the whole satellite thermal management adjustment is faster, the consumption of resources such as power consumption is smaller, and the stability is higher. And the minimization of the heating compensation power consumption of the thermal control subsystem in the power utilization peak periods such as the earth shadow period and the month shadow period is realized.

The invention belongs to the technical field of aviation electric propulsion, and provides a power and thermal management parameter optimization integrated framework suitable for a high-power hydrogen electric propulsion aircraft, which mainly comprises an overall design and parameter optimization module, a power distribution and control module and a comprehensive thermal management analysis module, the overall design and parameter optimization module realizes optimal balance of thrust, energy efficiency and stability of the aircraft through aerodynamic design, mission profile analysis, propulsion system configuration and weight estimation; the power distribution and control module dynamically distributes power output of power sources such as a lithium battery, a hydrogen fuel cell and a hydrogen turbine engine based on a model predictive control method and by means of cooperative work of a top energy management controller and component control units, and the optimal power utilization rate of different flight stages is ensured. The comprehensive heat management analysis module integrates a low-temperature cooling loop, a non-low-temperature heat management system and a temperature monitoring and heat recovery unit, accurately controls and adjusts the temperature and heat consumption of key components, and ensures that the key components always run in a safe temperature range; through parameter transmission and feedback iterative optimization between the modules, the energy efficiency and stability of the aircraft under the high-load condition are remarkably improved, and the development requirements of future high-power hydrogen-electric propulsion aircrafts for high efficiency, low carbon emission and multi-working-condition adaptability are met.

The present disclosure relates to a method and apparatus for predicting the heat consumption of clinker sintering based on a LightGBM model, and relates to the technical field of predicting the heat consumption of clinker sintering. The main objectives of the present disclosure are to improve the prediction accuracy and detection efficiency of the heat consumption of clinker sintering, and to reduce memory usage, so that the method and apparatus can be better practically applied in factories.The main technical solutions of the present disclosure include: obtaining corresponding target production data based on preset process parameters, wherein the preset process parameters are process parameters meeting preset requirements, selected from process parameters related to the heat consumption of clinker sintering; and outputting a prediction result of the heat consumption of clinker sintering by means of the preset LightGBM model, based on the target production data. The method and apparatus of the present disclosure are used for predicting the heat consumption of clinker sintering. Figure 1.

The invention discloses a gasification furnace for producing oil gas and water gas, which is characterized in that hydrogen with methane content of less than 5% and temperature of normal temperature to 200 DEG C is subjected to hydrogenation reaction with a high-temperature coke hydrogenation gasification layer, a low-temperature coke hydrogenation gasification layer and semicoke in sequence; according to the method, the methane-hydrogen-rich coal gas with relatively high methane concentration is obtained, more methanation reaction heat is also obtained, the methane-hydrogen-rich coal gas carrying heat is used for heating, hydrogenation and dry distillation of the dried coal, and the methane yield is weakened by the partial pressure of gas-phase methane, so that the yield of oil is increased, the oil-rich coal gas is obtained, and the energy consumption is reduced. Meanwhile, the heat consumption of the system is also reduced. Raw material coal is firstly prepared into oil gas, and then oxygen-enriched water vapor gasification is carried out to produce water gas; water gas condensate is reduced, phenolic compounds are not contained, and the treatment cost is low; the oil gas and water gas production method can be used for industries such as coal natural gas, coal fuel oil, IGCC (integrated gasification combined cycle) coal-fired power generation and the like.

The utility model provides a carbon dioxide trapping system for recycling waste heat by a heat pump. According to the system, waste heat recovery and quality improvement are carried out on barren liquor which is cooled by a barren-rich liquor heat exchanger and located in a medium-temperature section through a first waste heat recovery heat pump, and / or waste heat recovery and quality improvement are carried out on reaction waste heat of absorption liquid through a third waste heat recovery heat pump; and the recovered waste heat is used for heating a medium barren solution at the bottom of the desorption tower to perform carbon dioxide desorption, so that the recovery and full quality improvement of the low-grade waste heat are realized, and the aim of fully utilizing the low-grade waste heat is fulfilled. According to the system, through the first coupling heat exchanger and / or the second coupling heat exchanger, the working medium obtained after the recycled heat energy is reused for carbon dioxide desorption further exchanges heat with the shunted cold pregnant solution so as to preheat the cold pregnant solution, and therefore coupling utilization of the internal energy of the carbon dioxide capturing system is achieved. And the heat consumption and the operation cost of the carbon dioxide capture system are effectively reduced.

The invention provides an intelligent thermal control method for a coke oven, and relates to the technical field of coke oven heating combustion control. The specific implementation scheme is as follows: establishing two groups of vertical flues in the coke oven and a physical model of a carbonization chamber between the two groups of vertical flues; based on the mathematical model and the physical model, the real-time coking heat consumption of the coal in the carbonization chamber along with the change of the coking time is obtained; determining the flow of mixed gas output to the coke oven based on the real-time coking heat consumption, the mature fire falling time and the actually measured temperature of the vertical flue; based on the mixed gas flow, the mixed gas is output to the coke oven, and the cost is reduced.

The invention discloses a gas turbine performance improvement control method and system under a deep peak shaving working condition, the system comprises an AUMA motor, an IGV connecting rod, an IGV ring mechanical limit, an IGV execution mechanism limit switch and an IGV angle transmitter, the adjustable range of the IGV is improved, and the IGV can be closed to an opening IGVmin1 smaller than the original design 0%. After the transformation is completed, after the load instruction of the gas turbine is gradually reduced and the IGV is reduced to 0%, if the AGC load instruction still requires further reduction of the load of the gas turbine, the IGV can continue to be reduced, and along with reduction of the amount of air entering a combustion chamber, the turbine outlet temperature correction value OTC is still expected to be maintained within the designed temperature range. According to the method, hardware and control logic of an existing IGV and a deicing valve are transformed, the method for improving the low-load performance of a Siemens gas turbine is provided, the lower limit of peak-load operation load of a unit is increased, heat consumption in the low-load operation period is reduced, combustion stability is improved, NOx emission is continuously improved, and safe and efficient operation of the unit is ensured.

The invention discloses a distributed electric-thermal-hydrogen comprehensive energy storage system and an energy storage method. The energy storage system comprises a wind-photovoltaic power generation subsystem, an energy storage battery subsystem, a water electrolysis hydrogen production subsystem, a fuel cell subsystem, a solid hydrogen storage subsystem, a comprehensive energy control subsystem and a comprehensive energy allocation subsystem. The energy storage method comprises the steps of obtaining current power generation data and a user side energy storage layout scheme, generating an electrothermal hydrogen energy storage scheme, and sending an energy storage regulation and control signal. According to the system, the water electrolysis hydrogen production subsystem is directly connected with the fuel cell subsystem in series, so that the heat exchange loss is effectively reduced, and the energy utilization efficiency of the system is improved; the solid hydrogen storage system can be used as a heat consumption device, and when a user has an electricity demand, does not have a heat demand or the heat storage water tank is saturated, the solid hydrogen storage system absorbs heat during hydrogen release to supply heat generated by the fuel cell subsystem to the solid hydrogen storage subsystem, so that the energy consumption required by additional heat dissipation of the fuel cell subsystem is effectively reduced, and the operation cost of the system is reduced.

The present invention relates to the technical field of energy-saving roasting of coated sand, and discloses a regenerative coated sand roasting furnace, comprising a main body, a combustion chamber is arranged in the main body, an igniter facing the combustion chamber is installed on the main body, and a feed chamber is fixed on one side of the main body, one side of the combustion chamber is connected to the feed chamber, and the side of the combustion chamber away from the feed chamber is connected to a preheating bag, and the preheating bag is connected to an exhaust pipe; a baffle is arranged in the feed chamber, and a preheating chamber connected to the exhaust pipe is opened in the side wall of the feed chamber; the preheating chamber is connected to the exhaust pipe. The present invention has a simple structure, and the waste gas discharged from the combustion chamber is sent into the feed chamber to preheat the sand particles. The sand particles with a certain temperature enter the combustion chamber, which can reduce the heat consumption in the combustion chamber, thereby reducing the use of natural gas and reducing the roasting cost of the sand particles.