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

The invention discloses a comprehensive energy optimization scheduling method considering combustion of gas turbines with different hydrogen doping ratios, and belongs to the technical field of gas turbines, and the method comprises the steps: constructing a source-network-load-storage integrated combined cooling heating and power comprehensive energy system which covers an energy production layer, an energy conversion layer, an energy storage layer and an energy consumption layer; wherein in the energy consumption layer, electric load is supplied by gas turbine power generation, wind and light direct supply and energy storage discharge in a combined mode, heat load is borne by gas turbine waste heat, a gas-fired boiler and a heat storage system together, the coverage rate of a sensitive area is increased through the ergodicity of a chaotic system, population aggregation is avoided through initial value sensitivity, and it is ensured that all optimization schemes cover a key decision interval; meanwhile, in the algorithm evolution process, through a self-adaptive crossover variation mechanism, early enhancement of sensitive area exploration to capture efficiency inflection points and later fine development and positioning of an optimal solution, the problem of key solution omission of a traditional algorithm is thoroughly solved, and a more accurate hydrogen doping ratio reference is provided for system operation.

The embodiment of the invention provides a multi-steam-source cooperative frequency modulation combined heat and power generation system and a control method. The system comprises a boiler, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a power generator, a multi-stage regenerative heater, a heating system and a heating steam supply pipeline. A main steam outlet of the boiler is connected to the high-pressure cylinder through a main steam pipeline, a steam exhaust port of the high-pressure cylinder is connected to the intermediate-pressure cylinder through a pipeline, a steam exhaust port of the intermediate-pressure cylinder is connected to the low-pressure cylinder through a pipeline, and a steam exhaust port of the low-pressure cylinder is connected to the generator through a pipeline. A condensate water outlet of the medium-pressure cylinder is communicated to a condensate water inlet of the boiler through a first condensate water pipeline; the heating system is communicated with a steam exhaust port of the medium-pressure cylinder through a heating steam supply pipeline; the multi-stage regenerative heater is arranged on the first condensate water pipeline and connected with the high-pressure cylinder and / or the intermediate-pressure cylinder through steam extraction pipelines, and steam extraction adjusting valves are correspondingly arranged on the steam extraction pipeline between the high-pressure cylinder and the multi-stage regenerative heater and / or the steam extraction pipeline between the intermediate-pressure cylinder and the multi-stage regenerative heater.

The invention discloses a coal power unit flue gas waste heat power generation carbon dioxide capture comprehensive utilization system, which is characterized in that a flue gas waste heat ammonia steam turbine generator set is replaced by a flue gas waste heat low-temperature nitrogen steam turbine generator set or an expansion machine generator set, low-temperature nitrogen after doing work absorbs heat from flue gas, the flue gas is reduced to a lower temperature, and the flue gas waste heat ammonia steam turbine generator set is replaced by the expansion machine generator set. Carbon dioxide trapped after purification treatment is hydrogenated to prepare methanol which returns to the boiler for combustion, and the process is repeated, so that the coal consumption of the boiler can be reduced, and the problems of carbon dioxide absorption and storage are solved; part of power generated by the low-temperature nitrogen steam turbine generator unit or the expansion machine generator unit is used for producing hydrogen / oxygen by electrolyzing water, a low-temperature nitrogen freezing treatment device and other auxiliary machines, and the rest part increases the on-grid power, so that the benefits of the coal power unit are greatly improved. The methanol returns to the boiler for combustion, so that the effects of low-load stable combustion of the boiler and rapid load rising of the boiler can be achieved, and the requirements of deep peak regulation and high load change rate of a new-generation coal power unit are met.

The utility model discloses a central water treatment filtering device for desalted water production. A raw water inlet pipe of a reservoir is communicated with a water inlet pipeline of each filter; the ultrafiltration processors are connected in series; a water outlet of each filter is communicated with a water inlet pipeline of the first-stage ultrafiltration treater; a water outlet of the N-stage ultrafiltration treater is communicated with a water inlet pipeline of the filtered water storage tank; a water outlet of the filtered water storage tank is communicated with a water inlet pipeline of the primary reverse osmosis processor; all stages of reverse osmosis processors are connected in series, and water outlets of the N stages of reverse osmosis processors are communicated with a demineralized water storage tank pipeline. According to the device, the content of various pollutants in water entering the ultrafilter can be reduced, a filter element for ultrafiltration and reverse osmosis can be protected, the content of various impurity ions in the water after ultrafiltration is reduced, the conductivity of produced water is about 10 us / cm, the hardness is 0.01 mol / L or below, the produced water is used for supplementing water for a steelmaking and steel rolling heating furnace, and generated steam can be used for power generation of a steam turbine. Water consumption is reduced, resources are saved, and the accumulation speed of scale in the boiler is effectively reduced.

The present application relates to a kind of cross-border integrated energy system collaborative operation optimization method considering carbon-green certificate combined transaction, first, build cross-border integrated energy system CBIES, cross-border integrated energy system CBIES including gas turbine, gas boiler, renewable energy unit, energy storage device, electric boiler, wherein renewable energy unit includes wind power generation and photovoltaic power generation, energy storage device includes battery and heat storage tank;Second, propose the cross-border integrated energy system model considering heat network, power grid loss, on the basis of fully considering cross-border energy flow and conversion, introduce cross-border green certificate, carbon transaction, establish the cross-border integrated energy system collaborative optimization model considering carbon-green certificate combined transaction;Finally, the collaborative operation optimization result is obtained by the model simulation established.This application provides optimization method, which can reduce the operation cost of integrated energy system in different countries, and also improve energy optimization configuration and renewable energy consumption amount.

The invention discloses a three-layer dynamic optimization control system for deep peak regulation and primary frequency modulation of a thermal power generating unit, and belongs to the technical field of thermal power generation frequency modulation. A power grid frequency response model based on a traditional unit comprises a global coordination layer, an optimization control layer and an execution control layer. According to the signal uplink path, the execution control layer uploads unit state parameters to the optimization control layer in real time, and the optimization control layer receives signals and uploads dynamic response characteristics to the global coordination layer; the global coordination layer issues an optimization instruction, distributes total frequency modulation power and a power distribution proportion of a boiler and a steam turbine, the optimization control layer receives the optimization instruction from the global coordination layer, optimizes and calculates a unit target power value and a control boundary and issues a signal to the execution control layer, and the execution control layer receives the signal and controls the unit target power value and the control boundary. And stabilizing power grid fluctuation by utilizing turbine and boiler characteristic response. The control precision of the wide load range is improved, the combustion process is optimized, coal consumption and emission are reduced, and the energy efficiency of the unit is improved.

This invention discloses a deep peak-shaving system and method for thermal power plants based on ammonia cracking hydrogen production coupled with deep utilization of waste heat. It relates to the field of thermal power generation and includes a gasifier, an ammonia cracking hydrogen production unit, a cooler, a separator, an ammonia storage tank, an ammonia-hydrogen storage system, a peak-shaving burner, and a boiler. This invention utilizes the waste heat of the thermal power boiler to vaporize liquid ammonia into gaseous ammonia. The ammonia cracking hydrogen production unit uses medium- and high-temperature waste heat or electrical energy, along with an ammonia cracking catalyst, to crack a portion of the ammonia gas, producing an ammonia-hydrogen-nitrogen mixture. This mixture is then separated by a separator to obtain an ammonia-hydrogen mixture. The ammonia-hydrogen mixture is mixed with ammonia gas to produce mixtures with different ammonia-hydrogen ratios, which are stored in the ammonia-hydrogen storage tanks. The ammonia-hydrogen ratio used in the burner is adjusted according to different loads to maintain stable combustion. This invention can maintain stable combustion in the burner under low loads, achieving deep peak-shaving of thermal power plants, and can also deeply utilize waste heat from thermal power plants, improving power generation efficiency.

The invention discloses a waste heat boiler power generation optimization method for a gas-steam combined generator set, and the method comprises the steps: deeply cooling the exhaust gas temperature to below 75 DEG C through a multi-stage anti-corrosion heat exchange device, and carrying out the heat exchange through an intelligent control heat medium water circulation loop; the recycled heat is distributed to natural gas preheating, refrigeration, heat supply, air preheating and the like according to the priority in a cascade mode. According to the system, efficient deep recovery and comprehensive utilization of flue gas waste heat are achieved, the energy efficiency and economical efficiency of the unit are remarkably improved, and safe and reliable operation of the system is ensured through intelligent anti-corrosion control.

The invention discloses a thermal power plant deep peak regulation system and method utilizing high-temperature heat storage energy, and belongs to the field of coupling of industrial high-temperature heat storage energy and thermal power plant deep peak regulation. The system comprises a heating unit which is connected with an electric energy conversion and supply unit and / or a heat energy transfer and storage unit so as to convert electric energy or steam heat energy into heat storage energy of heat storage particles; the heat storage unit is used for storing the high-temperature heat storage particles conveyed by the heating unit; the heat release unit is used for receiving the high-temperature heat storage particles conveyed by the heat storage unit; wherein the heat release unit is a fluidized bed boiler in a thermodynamic system of a thermal power plant, so that heat storage energy of the heat storage particles is transmitted to the original thermodynamic system of the thermal power plant, and deep peak regulation of the thermal power plant is realized through overheating thermal power generation with rated parameters generated by the thermodynamic system. By means of the system, the problem that in the deep peak regulation process of an existing thermal power plant, a thermodynamic system of the thermal power plant and an industrial solid-state high-temperature heat energy storage technology are not coupled is solved.

The invention belongs to the technical field of thermal power generation intelligent control, and discloses a boiler heating surface soot blowing opportunity judgment method and device, equipment and a medium, an input signal is constructed according to the load change rate, a compensation coefficient is output through a trained correction model, a boiler heating surface cleaning factor is compensated, and a soot blowing opportunity judgment result is obtained. Identifying that the boiler is in a statistical controlled stable operation interval, collecting historical measurement values of the compensation cleaning factor under various working conditions, and determining a safe operation lower limit; performing sliding window filtering processing on the current measurement value of the compensation cleaning factor to obtain a target cleaning factor; and if the target cleaning factor is continuously lower than the safe operation lower limit and exceeds the set duration, generating a soot blowing trigger instruction, thereby realizing dynamic compensation of the cleaning factor in a rapid variable load state and accurate screening of the stable operation state of the boiler, reducing misjudgment of the soot blowing opportunity, improving the accuracy of determination of the soot blowing opportunity of the heating surface of the boiler, and improving the reliability of the soot blowing opportunity. And intelligent control over soot blowing operation is improved.

The invention discloses a photo-thermal power generation technology-based power and heat combined supply type virtual power plant optimization scheduling method. The method comprises the steps of constructing a multi-energy virtual power plant model comprising wind power generation, photovoltaic power generation, a photo-thermal power plant, an energy storage device and an electric boiler; utilizing Latin hypercube sampling to process wind and light output uncertainty; a double-layer optimization strategy and a hybrid dragonfly differential evolution algorithm (CT-DADE) based on a chaos theory are adopted to carry out optimization scheduling. An upper-layer optimization scheduling model takes wind and light output deviation minimization and economic benefit maximization as targets, and the output deviation is corrected through energy storage and an electric boiler; and the lower-layer optimization scheduling model optimizes the electric heating load curve by combining the time-of-use electricity price and the flexible load regulation characteristics. According to the method, a virtual power plant model including photo-thermal power generation, wind power generation, photovoltaic power generation, energy storage equipment, an electric boiler and a flexible load is constructed, uncertainty disturbance and supply-demand imbalance of new energy consumption are comprehensively considered, and stable supply and economical operation of an electric heating system are achieved.

The invention discloses a control method for automatic air distribution of a garbage incinerator, which is applied to garbage incineration power generation equipment, and the garbage incineration power generation equipment further comprises a steam boiler and a steam turbine generator unit. The garbage incinerator comprises a drying section, a combustion section and a burnout section; each section comprises two furnace bodies which are communicated with each other; each furnace body is provided with two primary air inlets, the total number of the 12 primary air inlets is 12, and the air inlet flow of primary air is controlled through one primary air baffle; the automatic air distribution system automatically adjusts a primary air baffle through PID, so that each air chamber obtains the required air volume. By adopting the technical scheme, the labor intensity of operators is reduced; adjustment is carried out according to the garbage heat value and the actual combustion working condition, the air volume needed by each air chamber is obtained through calculation, the opening degree is automatically adjusted through the air door baffle PID, automatic air distribution of the garbage incineration grate furnace is achieved, and the garbage incineration efficiency is improved.

The invention discloses a wind and light heat supply type thermal power heat energy improving system based on waste heat collaboration and a control method. The system comprises a photovoltaic power generation unit, a wind power generation unit, a heat supply conversion device, a heat storage device, a heat pump device, a flue gas waste heat recovery device and a central control system. The photovoltaic power generation unit, the wind power generation unit, the heat storage device and the heat pump device are all connected with the heat supply conversion device, and the heat storage device is connected with the boiler. And the heat storage device, the heat pump device and the flue gas waste heat recovery device are all connected with the central control system. By arranging a photovoltaic power generation unit, a wind power generation unit, a heat supply conversion device, a heat storage device, a heat pump device, a flue gas waste heat recovery device and a central control system, a heat energy management structure of new energy electric heating cooperation-flue gas waste heat composite regulation and control-heat storage center management is provided; space-time complementation and energy quality collaboration among different heat sources are truly achieved, and therefore the overall heat efficiency and flexibility of a thermal power plant are remarkably improved.

According to the distributed energy coupling park energy platform energy consumption monitoring system provided by the invention, an energy consumption acquisition-distributed energy operation-energy management three-in-one closed-loop energy consumption monitoring system is constructed, and low-carbon and zero-carbon operation of a park is realized through data driving; the energy consumption acquisition module acquires energy consumption data and operation condition parameters of a park boiler, water consumption equipment, a lighting system, production line equipment and an air conditioning system, and eliminates exceeded abnormal values based on a 3 sigma criterion, so that the data accuracy is guaranteed; the distributed energy operation module collects operation data of waste heat power generation, wind power, photovoltaic, heat pump and hydrogen energy storage equipment, and receives a regulation and control instruction through the control module containing the PID and MPC sub-module; the energy management module outputs a 1h-24h load prediction result through an LSTM neural network, the optimization scheduling unit combines a consumption rate formula and a carbon emission formula to generate a regulation and control instruction containing equipment target parameters, and finally realizes precise monitoring of energy consumption of the park in cooperation with the digital twinborn visual monitoring module of the three-dimensional park.

The invention discloses a corn straw biological power generation analysis method based on ecological environment protection, and relates to the technical field of biological power generation analysis, and the corn straw biological power generation analysis method comprises the following steps: continuously scanning a straw flow to obtain multi-source heterogeneous data; inputting multi-source heterogeneous data into the straw characteristic analysis model, and deconstructing key physical and chemical parameters; the key physical and chemical parameters are received, a power generation load instruction and real-time state data of boiler operation are combined, a multi-target optimization problem with the boiler thermal efficiency, the slagging risk index and the key pollutant emission concentration as optimization targets is solved through a power generation prediction control model, and a feeding instruction and a combustion instruction are generated; feeding combustion is monitored, and disturbance parameters and combustion state detection data are obtained; constructing a hybrid control model, and performing control parameter adjustment on known disturbance caused by fuel characteristic fluctuation in disturbance parameters; and the combustion state prediction deviation of the power generation prediction control model and unknown disturbance in the disturbance parameters are adjusted in real time.

The utility model discloses a biomass fluidized bed gasification furnace heat supply coupling internal combustion engine power generation system. A biomass gasification furnace utilizes biomass raw materials to produce combustible gas; the internal combustion generator set generates power by taking combustible gas as a gas source, the working time of the internal combustion generator set is concentrated on the peak-flat section of the power grid electricity price, and the electric energy generated by the internal combustion generator set is supplied to the power grid; the biomass gas steam boiler receives combustible gas and burns the combustible gas to generate heat, steam heat energy generated by the biomass gas steam boiler is supplied to the user side, and the working time period of the biomass gas steam boiler is concentrated in the valley period of the power grid electricity price. Both the biomass gas steam boiler and the internal combustion generator set receive combustible gas produced by the biomass gasification furnace through gas pipelines, and the gas pipelines are provided with electric control valves for controlling the gas supply states of the internal combustion generator set and the biomass gas steam boiler. The comprehensive energy consumption cost can be reduced, the energy utilization efficiency is improved, and meanwhile, remarkable environmental benefits are achieved.

This invention discloses a waste heat and waste energy power generation system for steel enterprises, including a boiler (1), a steam turbine generator (2), a condensing unit (3), a main steam header (4), a low-temperature reheat steam header (5), a high-temperature reheat steam header (6), and a main feedwater header (8). The boiler (1) includes a gas boiler (11) and a waste heat boiler (12), and the steam turbine generator (2) includes a high-pressure cylinder (21) and a low-pressure cylinder (22). The waste heat and waste energy power generation system for steel enterprises can balance the fluctuations in power generation load caused by fluctuations in gas or intermittent waste heat resources, and achieve a dynamic balance between gas, waste heat, and power generation load. It can effectively prevent damage to the units from low-load operation and improve the overall power generation efficiency of multiple units.

The invention discloses a gas-steam combined cycle power generation system and method coupled with thermochemical energy storage. Comprising a Ca (OH) 2 / CaO system thermochemical energy storage system, a high-pressure natural gas conveying pipeline, a natural gas differential pressure power generation system, a gas turbine power generation system, a waste heat boiler, a frequency division fluid preheater, a steam turbine power generation system, a water supply preheater, a valve A, a valve B, a valve C, an air preheater and a valve D, the Ca (OH) 2 / CaO system thermochemical energy storage system comprises a reactor body and a steam pocket, the system and the method can deeply integrate thermochemical energy storage, solar full spectrum utilization and pressure energy recovery, and meanwhile, multi-energy coupling and dynamic peak regulation can be achieved.

The application discloses a coal-based solid waste disposal system and method for chemical looping combustion coupled with lignite boiler peak shaving, and the system comprises an electrolytic water device, an air reactor, a fuel reactor, a gas mixer, a condenser, a semi-gasification stable combustion burner and a boiler body, etc.; the method utilizes the redundant power generation of wind power generation and photovoltaic power generation to electrolyze water in the electrolytic water device; H2 is introduced into the fuel reactor to react, so that the oxide carrier is reduced into a metal carrier, and water vapor is generated; the metal carrier in the air reactor is subjected to an oxidation reaction with air, so that the metal oxide is generated and a large amount of fuel is released; the gasification background gas is introduced into the air reactor to be preheated, and then is mixed with the water vapor generated in the fuel reactor, and finally the semi-coke powder in the semi-coke powder system is introduced into the semi-gasification stable combustion burner, and then is introduced into the furnace through the stable combustion burner nozzle to be stably combusted; part of the water vapor generated in the fuel reactor is introduced into the condenser to be condensed, so that condensed water is obtained.

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

This invention provides an involute water electrode photovoltaic power generation and thermal storage system and control method. The system mainly includes a thermal storage tank, an involute water electrode, a fixed water electrode, a photovoltaic power supply system, and a monitoring system. The involute water electrode is made of a thin conductive metal plate material, formed by rolling the thin conductive metal plate into an involute shape to create a 360° involute water electrode. The control method includes initialization settings, photovoltaic maximum power point tracking (MPPT), rapid locking of the photovoltaic maximum power point segment, and refined photovoltaic MPPT control. Based on the principle of a water electrode hot water boiler, this invention utilizes a photovoltaic array to power the water electrode hot water boiler. Since the photovoltaic array outputs DC power, and to ensure maximum photovoltaic power output, this invention focuses on solving the problems of water electrode polarization and low-cost photovoltaic MPPT during photovoltaic array heating of the water electrode boiler, thus achieving efficient utilization of photovoltaic power generation.

The utility model discloses a zero-carbon glass kiln system which comprises a photovoltaic power generation device, an air separation device, a water electrolysis hydrogen production device, a mixer, a methanation device, a waste heat boiler I, a reforming device, a glass kiln, a waste heat boiler II and a dust removal and desulfurization device. The device is driven by green electricity to produce green oxygen, green nitrogen and green hydrogen; the flue gas of the glass kiln is cyclically enriched into high-concentration carbon dioxide (95.0 v% or above), the high-concentration carbon dioxide and green hydrogen are subjected to a methanation reaction to produce methane, and the methane, the carbon dioxide and water vapor are subjected to a reforming reaction to produce carbon monoxide and hydrogen; carbon monoxide and hydrogen are used as fuel of the glass kiln, green oxygen and carbon dioxide are mixed to form carbon-based oxygen-enriched combustion which is used as a combustion improver of the glass kiln, carbon-based oxygen-enriched combustion of the glass kiln is carried out, and redundant carbon dioxide is sold. According to the utility model, the purposes of greenness, energy conservation, almost no nitrogen oxide and zero carbon are realized.

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

The invention provides a horizontal coil pressurizing once-through boiler device with a waste heat recovery function, and relates to the technical field of power generation equipment. The boiler device comprises a boiler, an air inlet pipe is fixedly connected to one side of the boiler, a suction fan is arranged on the air inlet pipe, a suction hood is fixedly installed at one end of the suction fan, a filter screen is fixedly installed in the suction hood, a first motor is installed in the suction hood, and a rotating shaft is installed at the output end of the first motor; one end of the rotating shaft penetrates through the filter screen and extends to the outside, the first motor is started, then the first motor drives the rotating shaft to rotate, then the cleaning brush is driven to rotate, impurities on the surface of the filter screen are cleaned through the cleaning brush, and dust on the surface of the filter screen is conveniently cleaned; therefore, dust is prevented from entering the device, air circulation is guaranteed to the maximum extent, impurities entering the device are reduced, and the service life of the device is guaranteed.

The invention discloses a system and a method for generating power by utilizing sulfur dioxide in boiler flue gas. The system comprises a boiler induced draft fan rear flue, a sulfur dioxide absorption module and a flue gas emission module, the method comprises the following steps: flue gas discharged from a rear flue of a boiler induced draft fan enters a first inlet of a sulfur dioxide absorption module, an iodine solution of the sulfur dioxide absorption module is sprayed out from an atomizing nozzle from top to bottom and the flue gas from bottom to top, and a filler layer is arranged between the atomizing nozzle and the flue gas inlet to increase the contact between the flue gas and the iodine solution; iodine, sulfur dioxide and water react to generate a hydrogen iodide solution and a sulfuric acid solution, and flue gas with absorbed sulfur dioxide is discharged into the flue gas discharge module from a first outlet of the sulfur dioxide absorption module. Through the closed-loop process of iodine solution absorption-hydrogen iodide decomposition-hydrogen fuel cell power generation, the limitation that only pollutant removal is concerned in the traditional desulfurization technology is broken through.

The invention relates to the technical field of thermal power generation equipment, in particular to a thermal power plant boiler low-NOx pulverized coal burner and a burning method thereof.The thermal power plant boiler low-NOx pulverized coal burner comprises an air supply mechanism, an air supply device is arranged on one side of the air inlet end of the air supply mechanism, a burning chamber is arranged at the air outlet end of the air supply mechanism, and an ignition gun penetrating through the air inlet end and the air outlet end is arranged in the air supply mechanism; a combustion-supporting gas conveying mechanism is further communicated between the combustion chamber and the air outlet end and comprises a combustion-supporting gas sleeve and a flow dividing sleeve, the flow dividing sleeve is communicated with the air outlet end, the combustion chamber is located in the flow dividing sleeve, a flow dividing plate is arranged between the flow dividing sleeve and the combustion chamber, and combustion-supporting gas nozzles and rotational flow channels which are staggered are arranged on the flow dividing plate. The combustion-supporting gas sleeve is arranged on the outer side of the flow dividing sleeve in a sleeving mode, a combustion-supporting gas inlet pipe is arranged on the bottom side of the combustion-supporting gas sleeve, and a combustion-supporting gas spraying pipe is arranged on the inner side of the combustion-supporting gas sleeve, extends into the flow dividing sleeve and is located on one side of the combustion-supporting gas nozzle. By optimizing the structural design and combustion process control of the combustor, generation and emission of NOx are effectively reduced, meanwhile, the combustion efficiency is improved, the adaptability to different coal types is enhanced, and the equipment cost and the maintenance difficulty are reduced.

The invention relates to a gas turbine inlet air preheating system based on flue gas waste heat utilization, and belongs to the technical field of gas power generation, the gas turbine inlet air preheating system comprises an air heater and an air heat exchanger, the air heater is installed in a boiler tail flue, the outlet end of the air heater is connected with a first condensed water return pipeline, and the outlet end of the first condensed water return pipeline is connected with a second condensed water return pipeline. The free end of the first condensed water return pipeline is connected with a water side inlet of the air heat exchanger, a water side outlet of the air heat exchanger is connected with a second condensed water return pipeline, and the free end of the second condensed water return pipeline is connected with the inlet end of the air heater. An air side inlet of the air heat exchanger is connected with a gas inlet of the gas turbine, and an air side outlet of the air heat exchanger is connected with an inlet of the gas compressor through a hot air pipeline. Through thermodynamic system coupling innovation, deep energy integration of the waste heat boiler and the gas turbine is achieved, and the double advantages of saving energy, improving efficiency, reducing cost and reducing emission are achieved.

The invention relates to a deep waste heat recovery coupling utilization system of a gas-steam combined cycle unit, and relates to the technical field of thermal power generation. The waste heat boiler plate heat exchanger receives the flue gas, the flue gas and the intermediate water are subjected to heat exchange treatment, and flue gas intermediate water is obtained; the absorption heat pump receives the flue gas intermediary water and heat supply network circulating water discharged by the heat supply network heat supply system, and the heat supply network circulating water is heated based on the flue gas intermediary water; the heat supply network heat supply system receives heat supply network circulating water and supplies heat to the outside based on the heat supply network circulating water. The closed circulating water system provides closed circulating water intermediate water; the gas turbine intake air heating heat exchanger receives the closed circulating water intermediate water to heat intake air of the gas turbine based on the closed circulating water intermediate water. According to the scheme, multi-stage utilization of flue gas heat is achieved, the overall utilization efficiency of energy is improved, energy waste is reduced, high-temperature flue gas is prevented from being directly discharged into the atmosphere, and the influence of heat pollution on the environment is effectively reduced.

The utility model provides a boil-off gas utilization device system for a liquid hydrogen transport ship and an arrangement structure of the boil-off gas utilization device system. The boil-off gas utilization device system for the liquid hydrogen transport ship comprises a liquid hydrogen storage device, a methanol preparation device and a methanol storage device which are connected in sequence, the vapor utilization device system for the liquid hydrogen transport ship further comprises a decarburization device, a methanol dual-fuel boiler and a methanol dual-fuel power generation device, wherein the methanol dual-fuel boiler and the methanol dual-fuel power generation device are arranged in parallel. The boil-off gas utilization device for the liquid hydrogen transport ship is good in system economy, high in safety, green, low in carbon and suitable for large-scale application and popularization.