1450results about "Feed-water heaters" patented technology

The invention belongs to the technical field of power station boiler waste heat recycling energy-saving equipment and relates to a plate-and-shell type coal economizer. The plate-and-shell type coal economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first and a second water inlet / outlet water tank (3, 3') and a first and a second exhaust gas inlet / outlet pipeline (4, 4'), wherein the corrugated plate heat exchange core body (1) is mounted in the heat exchanger shell (2), the first and second water inlet / outlet water tanks (3, 3') are respectively arranged at the upper and lower ends of the front side of the corrugated plate heat exchange core body (1), and the first and second exhaust gas inlet / outlet pipelines (4, 4') are respectively arranged at the upper and lower sides of the corrugated plate heat exchange core body (1). The plate-and-shell type coal economizer solves the problem that the length of a water passage needs to be increased to solve the problem of unapparent water heating due to the great difference between an exhaust gas density and a water density, and meanwhile, a corrugated passage at the exhaust gas side enables the exhaust gas flow turbulivity to be increased and the heat transfer efficiency to be improved; the blockage due to ash accumulation happens rarely, even if the ash is accumulated, the cleaning is easy to finish.

The present application provides a molten salt heat storage and release unit and a deep peak regulation system for a boiler unit, the molten salt heat storage and release unit comprising a molten salt storage assembly, a heat exchange energy storage assembly, and a heat exchange energy release assembly, wherein the molten salt storage assembly comprises a high-temperature molten salt storage tank and a low-temperature molten salt storage tank; the heat exchange energy storage assembly is connected to the high-temperature molten salt storage tank and the low-temperature molten salt storage tank, and comprises a flue gas heat exchange device and a steam heat exchange device, and molten salt in the low-temperature molten salt storage tank sequentially passes through the flue gas heat exchange device and the steam heat exchange device and then flows into the high-temperature molten salt storage tank; and the heat exchange energy release assembly is connected to the high-temperature molten salt storage tank and the low-temperature molten salt storage tank, and comprises a pulverized coal heating device and a feedwater heating device, and molten salt in the high-temperature molten salt storage tank releases energy through the pulverized coal heating device and / or the feedwater heating device and then flows into the low-temperature molten salt storage tank. The present application provides a molten salt heat storage and release unit and a deep peak regulation system for a boiler unit with flexible peak regulation and high energy efficiency.

The invention discloses a steam compressor system and a control method. The system comprises a steam compressor, a controller, a heat exchange device, and a steam inlet pressure detection device, a steam exhaust pressure detection device and a steam flow detection device which are respectively connected with the controller, the heat exchange device internally comprises a gas phase area and a liquid phase area, and the gas phase area is communicated with a steam inlet of the steam compressor through a steam inlet pipeline; the steam inlet pressure detection device is arranged on the steam inlet pipeline; a heat exchange coil and a heating device are arranged in the liquid phase area; an inlet of the heat exchange coil is communicated with a steam outlet of the steam compressor through a steam exhaust pipeline; the steam exhaust pressure detection device and the steam flow detection device are arranged on the steam exhaust pipeline; an outlet of the heat exchange coil extends to the outside of the heat exchange device; and the controller is respectively connected with the steam compressor and the heating device. According to the steam compressor system provided by the embodiment of the invention, the steam heat can be recycled, so that the energy consumption of the steam compressor test is reduced, and the test cost is reduced.

The invention discloses a dynamic monitoring-based deaerator water supply control method and system for a nuclear power plant, and relates to the field of deaerator water supply control, and the method comprises the steps: firstly, through a hybrid online identification algorithm, analyzing a historical valve position instruction and a water supply flow sequence in real time, and dynamically estimating the local gain and hysteresis width of a valve under the current working condition; then, the parameters identified in real time are utilized to carry out prospective compensation on the expected flow variation calculated by the main controller. In other words, the instruction amplitude is adjusted according to the estimated local gain, and it is ensured that consistent flow response can be obtained under different loads; meanwhile, when the instruction is reverse, the compensation amount is actively applied according to the estimated hysteresis width so as to eliminate the adjustment dead zone and oscillation caused by hysteresis. In this way, the nonlinear object of the valve is equivalent to a linear link with consistent response, and the stability and accuracy of the deaerator water level control system in the full working condition range are remarkably improved.

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

The invention relates to the technical field of thermal engineering, and discloses a horizontal split type rotating film deaerator which comprises a first-stage deoxidizing part and a second-stage deoxidizing part on one side of the first-stage deoxidizing part, an annular air inlet part is installed on the side, close to the second-stage deoxidizing part, of the first-stage deoxidizing part, and an annular water inlet part is arranged on the side, away from the second-stage deoxidizing part, of the annular air inlet part. A packing layer is installed on the side, close to the first-stage deoxidizing piece, of the second-stage deoxidizing piece, a gas conveying piece is arranged on the side, perpendicular to the second-stage deoxidizing piece, of the packing layer, a first butt joint piece is fixedly connected to the side, away from the first-stage deoxidizing piece, of the second-stage deoxidizing piece, and a deoxidizing water tank is fixedly connected to the side, away from the second-stage deoxidizing piece, of a first mounting piece. According to the device, conveying pipes in four directions are arranged on the annular water inlet piece and the annular air inlet piece correspondingly, the flow dividing assembly is placed outside the first-stage deoxidizing piece, and damage caused by long-time internal water supply flushing and heating is reduced.

The invention discloses a steam compression system and a control method thereof. The steam compression system comprises a flash tank, at least one stage of steam compressor and a first water circulation pipe. The flash tank is used for enabling the steam generation water heated to the specified flash temperature to be subjected to flash evaporation under the negative pressure condition in the tank to become low-pressure steam; the steam compressor is used for compressing the low-pressure steam into superheated steam of which the saturation pressure is target condensing pressure; and the first water circulating pipe is used for guiding water of a target water source to motors of the steam compressors at all levels and exchanging heat with heat dissipation mechanisms of all the motors, and the water subjected to heat exchange returns to the target water source. Compared with the prior art, heat at the motor is recycled through water circulation, so that the enthalpy value of water for steam generation is increased, energy consumption needed by steam generation is reduced, and the comprehensive energy efficiency of the system is improved.

The invention relates to the technical field of nuclear energy comprehensive utilization, and discloses an energy system with nuclear energy as base load and a control method.The system comprises a nuclear power secondary loop system, a renewable energy system, an energy storage system, a steam supply system, a seawater desalination system, a hydrogen production system, a heating system and a refrigeration system; the heat of the reactor core enters the steam generator to generate main steam; the photovoltaic module and the wind turbine generator set carry out renewable energy power generation; a storage battery is used for storing renewable energy electric power, and a molten salt heat storage system is used for storing heat energy; the steam supply heat exchanger is used for heating fresh water produced by the seawater desalination system to obtain superheated steam; the low-temperature multi-effect evaporation system and the reverse osmosis membrane method seawater desalination system generate fresh water; the electrolytic bath generates hydrogen and oxygen; the heating system and the refrigerating system are used for refrigerating in summer and heating in winter, and nuclear energy, wind energy, solar energy and the like are coupled and utilized in a stepped mode.

The invention provides an energy gradient utilization steam Rankine cycle power generation system and method for nuclear fusion, and belongs to the field of nuclear fusion energy conversion and utilization. Different temperature heat of a cladding, a divertor and a vacuum chamber is guided into a high-temperature independent heat storage loop, a medium-temperature independent heat storage loop and a low-temperature independent heat storage loop respectively, an operation section stores heat, and a pause section releases heat; feed water is heated step by step through a multi-stage preheater, an evaporator and a superheater according to the sequence of low temperature, medium temperature and high temperature, and superheated steam of 550 DEG C is formed to continuously drive a turbine to generate power. Decoupling of intermittent output of the fusion reactor and continuous operation of the power generation system is achieved, steam extraction of a steam turbine is omitted, the structure is simplified, and the energy utilization rate and the circulation efficiency are improved.

The utility model provides a peak-shaving steam supply system for deep waste heat utilization of a thermoelectric unit, which deeply recovers cold end waste heat and flue gas waste heat of a cogeneration unit, is coupled with a two-stage compression heat pump, extracts waste heat to heat demineralized water, and serves as a primary heat source for supplying industrial steam, so that the waste heat participates in external heat supply; the superheater utilizes the generating capacity of the unit to enable industrial steam to reach steam supply parameters, the waste heat of the unit and the generating capacity are combined for external steam supply, the circulating heat efficiency is improved, the steam supply capacity is improved, meanwhile, the on-grid electricity is reduced, thermoelectric decoupling is achieved, the unit adjusting operation interval is expanded, the operation cost and pollutant emission are reduced, and peak regulation or spot transaction earnings are improved. And a clean, low-carbon, flexible, efficient, economical and energy-saving combined heat and power generation system is constructed.

The invention discloses a small micro-superheated steam through-flow type gas condensation boiler, belongs to the technical field of boilers, and solves the problems that the current small gas boiler is developed towards the high-efficiency, low-emission and compact direction, and particularly pays attention to waste heat recovery and steam quality control. Comprising an annular water chamber allowing water to enter, a combustion chamber arranged above the annular water chamber and an ultra-low nitrogen surface fiber combustor located above the combustion chamber and communicated with the combustion chamber, and an annular steam chamber is arranged above the combustion chamber. The ultra-low nitrogen surface fiber burner works to burn gas and raise the temperature, and the composite fin straight water pipe converts water in the water pipe into wet steam through efficient heat exchange of the spiral fins and enters the annular steam chamber. External water is injected into the annular water chamber through the finned tube group of the flue gas condenser and the connecting tube, and then enters the steam chamber through the straight tube. Wet steam in the steam chamber enters the superheater through an inlet pipe to form micro superheated steam. Combustion smoke is condensed and discharged after being filtered by a filter screen and subjected to heat exchange, and dryness of the combustion chamber is guaranteed.

The energy storage steam system comprises a main flue, a fused salt heat exchange module and a water heat exchange module are arranged in the main flue, the fused salt heat exchange module comprises a salt heat exchanger, the salt heat exchanger is arranged in the main flue, and the water heat exchange module is arranged in the main flue. The inlet end and the outlet section of the salt heat exchanger communicate with a cold salt tank and a hot salt tank through conveying pipelines correspondingly, the water heat exchange module comprises a water quality heat exchanger, the water quality heat exchanger is arranged in a main flue, and the inlet end and the outlet section of the water quality heat exchanger are arranged in a condensation water tank and a deaerator through conveying pipelines correspondingly; the output end of the deaerator communicates with the fused salt-steam generating device, and the cold salt tank and the hot salt tank communicate with the fused salt-steam generating device. Fused salt is used as a high-temperature heat transfer and storage medium, water is used as a heat transfer and storage medium of a low-temperature area, intermittent flue gas or process gas waste heat is recycled, then the recycled heat is used for generating high-parameter steam, and the requirements for external driving, heat supply, power generation or heat supply and the like are met.

The invention discloses a steam boiler with a steam waste heat recovery function, which comprises a steam boiler body, a combustion chamber, a box body, a combustor, a steam pipe, a smoke exhaust pipe, a drainage mechanism, a connecting pipe, a water inlet pipe and a heat exchanger, the combustion chamber is arranged in the steam boiler body, and the combustor is arranged on one side of the combustion chamber; and a steam pipe is arranged at the top of the steam boiler body. According to the steam boiler with the steam waste heat recovery function, in the aspect of waste heat recovery, the heat exchanger of a composite structure of the heat conduction pipe and the spiral pipe is adopted, sensible heat and latent heat of high-temperature smoke in the smoke exhaust pipe are efficiently captured, and heat is rapidly transferred to a water inlet system through low-boiling-point heat conduction liquid; the waste heat of the flue gas which is directly discharged originally is fully recycled, and the energy loss is greatly reduced.

The invention discloses an efficient thermodynamic system based on a wide pressurization module and an operation method of the efficient thermodynamic system. The efficient thermodynamic system comprises a boiler, a high-pressure cylinder, a medium-pressure cylinder, a low-pressure cylinder and a generator. A pressurizing cylinder of the wide-width pressurizing module and the high-pressure cylinder are coaxially arranged; one end of a main steam pipeline mother pipe of the main steam pipeline is connected with the boiler, and the other end is connected in parallel with first and second steam inlet branches; a first steam inlet regulating valve and a second steam inlet regulating valve are respectively arranged on the first steam inlet branch and the second steam inlet branch; the pressure cylinder is connected with the second steam inlet branch and the water supply wide-range heat booster through a first steam exhaust pipeline and a first steam extraction pipeline; a first steam exhaust valve and a first steam extraction valve are respectively arranged on the first steam exhaust pipeline and the first steam extraction pipeline; one end of the first steam exhaust pipeline is connected with a steam exhaust port of the pressure cylinder, the other end of the first steam exhaust pipeline is connected to the second steam inlet branch, and a third steam inlet adjusting valve is arranged on the second steam inlet branch between the first steam exhaust pipeline and the first steam inlet branch. The system can efficiently operate under high load, the construction cost is low, and the operation flexibility is improved.

The waste heat utilization equipment comprises a main flue, a bypass outlet and a bypass inlet are formed in the middle side wall of the main flue, a dust removal system is arranged on the main flue, and the bypass inlet is located in front of the dust removal system; an inlet of the bypass flue is connected with the bypass outlet, and an outlet of the bypass flue is connected with the bypass inlet; the heat exchanger is arranged on the bypass flue and connected with a water supply system of the boiler; the baffle device is arranged at an outlet of the bypass flue; the first temperature instrument is arranged on the side wall of the main flue and located between the bypass inlet and the dust removal system; and the controller is electrically connected with the baffle device and the first temperature instrument, and the controller is used for controlling the baffle opening degree of the baffle device based on the detected temperature of the first temperature instrument so that the flue gas temperature at the inlet of the dust removal system can be within a preset first temperature range. The technical problem that the waste heat utilization rate of the boiler is low is solved.

The invention discloses a steam supply system based on calcium hydroxide thermochemical energy storage and an operation method. The system comprises a thermochemical energy storage device, a steam supply device, an electric heating device and a material circulation auxiliary device. The thermochemical energy storage device is a fluidized bed reactor and a solid material storage tank, reversible conversion between high-grade heat energy and chemical energy is achieved through hydration / dehydration reaction, then heat energy storage is achieved, and the thermochemical energy storage device is matched with the auxiliary device to form a closed material circulation loop. The steam supply device integrates multiple paths of steam through a valve and a mixer; the electric heating device serves as a supplementary heat source in the peak regulation stage of the coal-fired heat supply unit. The operation method is divided into a starting stage, a non-peak-shaving stage and a peak-shaving stage, and cooperative control over high-pressure steam extraction heat energy storage and low-temperature water supply evaporation overheating is achieved. The system aims to solve the thermoelectric decoupling problem of the coal-fired heat supply unit, and has the advantages of flexibility, high efficiency, safety, environmental protection, low application cost, high energy storage density, small occupied area and the like.

The invention discloses a cross-temperature-zone heat storage steam supply system and a working method thereof, and belongs to the technical field of heat storage and supply. According to the system, a first inlet of a hot water storage tank is connected with an outlet of a circulating deoxidizing hot water generating unit, and a first outlet of the hot water storage tank is connected with one end of a pressure reducing throttle valve; an inlet of the molten salt hot storage tank is connected with an outlet of the molten salt cold storage tank, and an outlet of the molten salt hot storage tank is connected with a second inlet of the molten salt heat exchanger; the solid heat storage unit is connected with the solid heat storage electric heater, and an outlet of the solid heat storage unit is connected with a second inlet of the secondary overheating heater; the other end of the pressure reducing throttle valve is connected with a first inlet of the molten salt heat exchanger or the primary superheater, a first outlet of the molten salt heat exchanger or the primary superheater is connected with a first inlet of the secondary superheater, and a first outlet of the secondary superheater is connected with a steam pipe network. Hot water heat storage and vaporization can be integrated, and efficient heat supply in different temperature zones can be achieved.

The invention belongs to the technical field of fused salt energy storage, and particularly relates to a thermal power generating unit deep peak shaving system and method of a fused salt heat storage coupling high-temperature heat pump. In the high-generation time period of renewable energy sources, the load of a thermal power generating unit needs to be reduced, at the moment, a boiler operates at the lowest stable combustion load, a fused salt heat storage system is added, all main steam is extracted to enter the heat storage system to heat fused salt, a high-pressure cylinder of a steam turbine is stopped, and an intermediate-pressure cylinder and a low-pressure cylinder of the steam turbine operate under the low-load working condition; the output load of the unit only meets the plant power, and the load is not output to the power grid; in the load rising time period, heat stored by the fused salt heat storage system is used for generating steam in the unit load rising stage to increase the unit steam turbine load rising rate and peak power generation; the problems of operation safety and low energy grade in the unit peak regulation process are solved. In the peak period of electricity utilization, heat stored in the fused salt heat storage system is released into the unit, and the output load of the unit is rapidly increased. An outlet of the deaerator serves as a water taking point, part of supplied water is extracted to pass through the preheater, the evaporator and the superheater to generate high-temperature and high-pressure steam, the high-temperature and high-pressure steam enters a high-pressure cylinder of the steam turbine to do work, and therefore the output load of the steam turbine is rapidly increased. The invention provides a thermal power generating unit deep peak regulation system and method of a fused salt heat storage coupling high-temperature heat pump, and aims to realize deep peak regulation of a unit and power generation by absorbing renewable energy sources such as wind and light.

The invention discloses a circulating fluidized bed boiler water supply optimization method and system, and belongs to the technical field of boiler energy conservation. The system mainly comprises a condensate water tank, a demineralized water tank, a slag cooler, a deoxygenization water tank, a condensate water pump, a demineralized water pump, a plate heat exchanger, a reverse osmosis membrane group, a demineralized water buffer tank and the like. The principle of'condensate water priority 'is adopted, the supply amount of condensate water is preferentially adjusted according to the liquid level of the deoxygenated water tank through the intelligent control unit, and the insufficient part is supplemented by demineralized water; the demineralized water subjected to heat exchange by the slag cooler is intelligently distributed to a demineralized water tank, a condensation water tank or a deoxygenization water tank according to the water outlet temperature; the plate heat exchanger can preheat reverse osmosis inlet water by adopting a desalting water mode or a steam mode; the demineralized water buffer tank effectively inhibits water impact. Dynamic balance and heat energy gradient utilization of steam condensate water and demineralized water are achieved, the problems of water tank overflow and energy waste are effectively solved, and the economical efficiency and stability of boiler operation are remarkably improved.

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 provides an integrated vehicle-mounted steam-injection boiler with high maneuvering characteristics and a using method of the integrated vehicle-mounted steam-injection boiler. The integrated vehicle-mounted steam-injection boiler comprises a steam-injection boiler pressed assembly, an auxiliary system and a carrying tool, and the steam-injection boiler pressed assembly and the auxiliary system are arranged on the carrying tool; and the carrying tool is used for driving the steam-injection boiler compression assembly and the auxiliary system to move. The components are integrally arranged, so that the vehicle-mounted steam injection boiler can form a complete independent working unit from water supply to steam production, the dismounting workload in the steam injection transition and movement process is reduced, a carrying tool with a good suspension system is adopted, and the vehicle-mounted steam injection boiler is convenient to use. And the vehicle-mounted steam-injection boiler has good field driving capability and maneuverability.

The utility model provides a kind of high-temperature solid material waste heat boiler, including fender, first heat exchange pipe, second heat exchange pipe and steam drum;The fender is enclosed into the cylinder structure for high-temperature solid material from top to bottom to flow, first heat exchange pipe is located in the upper section of cylinder structure inside, second heat exchange pipe is located in the lower section of cylinder structure inside, first heat exchange pipe and second heat exchange pipe are all by spiral coil pipe structure from top to bottom, independently the flow cross section of high-temperature solid material is divided into several areas, the water inlet and water outlet of first heat exchange pipe are connected with the steam drum outside cylinder structure respectively, and the water outlet of second heat exchange pipe is connected with the steam drum.The utility model waste heat boiler uses the mode that heat exchange pipe and high-temperature solid physical direct contact, can effectively recover high-temperature sensible heat, produce steam.Heat exchange pipe spiral arrangement, multiple area segmentation material flow cross section, expansion free, both energy saving, and can extend equipment service life.

The invention relates to a wide-load efficient coal power unit thermodynamic system and a wide-load efficient coal power unit thermodynamic system control method. The wide-load efficient coal power unit thermodynamic system comprises a front high-pressure cylinder and a rear high-pressure cylinder. The front steam admission amount and the front through-flow area of the front high-pressure cylinder are smaller than the rear steam admission amount and the rear through-flow area of the rear high-pressure cylinder, and the steam admission amount sum of the front steam admission amount and the rear steam admission amount meets the rated working condition use requirement of the wide-load efficient coal power unit thermodynamic system. A first valve is arranged on a first main steam transmission branch where the front high-pressure cylinder is connected with the main steam transmission pipeline, a second valve is arranged on a second main steam transmission branch where the rear high-pressure cylinder is connected with the main steam transmission pipeline, and a third valve is arranged on a first steam exhaust pipeline where the front high-pressure cylinder is connected with the rear high-pressure cylinder. The connection state comprises a series connection state and a parallel connection state, and the wide-load operation efficiency of the wide-load efficient coal power unit thermodynamic system can be effectively improved.

The invention discloses a biomass power plant dead steam and flue gas waste heat integrated recovery heat supply device which comprises the following components: a biomass boiler used for combusting biomass fuel and generating high-temperature steam, and a flue gas outlet of the biomass boiler is connected to a flue gas emission reduction and waste heat recovery integrated unit; a steam inlet of the steam turbine is connected with a high-temperature steam outlet of the biomass boiler, and a steam outlet of the steam turbine is connected to a high-temperature side inlet of the steam exhaust heat exchanger and a high-temperature side inlet of the condenser through valves; the steam exhaust heat exchanger is connected with the condenser. When the device is implemented, waste steam latent heat and flue gas sensible heat / latent heat are recovered in a stepped manner, so that the comprehensive heat efficiency is remarkably improved; seasonal mode switching is achieved through an arranged intelligent control system, namely flue gas waste heat is recycled preferentially in summer, and steam exhaust heat supply is combined in winter; fuel cost is counteracted through waste heat sales income, and the income during implementation of the device is increased.

The utility model relates to the field of boiler preheating, in particular to a boiler preheating exchange system which comprises a heat exchange assembly and a quick coupler, and the heat exchange assembly comprises a heat exchanger, a heat exchange water inlet pipe, a heat exchange water outlet pipe, a cooling water inlet pipe and a cooling water outlet pipe. One end of the heat exchange water inlet pipe and one end of the heat exchange water outlet pipe are fixedly connected to the upper portion of the side wall of the heat exchanger in a spaced mode, and one end of the cooling water inlet pipe and one end of the cooling water outlet pipe are fixedly connected to the lower portion of the side wall of the heat exchanger in a spaced mode. And one end of the fixed joint is in threaded connection with the other end of the water pipe in the heat exchange assembly, and the other end of the fixed joint can be quickly inserted and fixed at one end of the inserting joint, so that the effects of converting the heat energy of the heated cooling water in the air compressor cooling system to preheat the boiler and improving the utilization rate of the heat energy are achieved.

The invention relates to the technical field of high-efficiency recovery of low-temperature exhaust gas, in particular to a high-temperature cooking waste heat recovery system for white spirit brewing. The white spirit brewing high-temperature cooking waste heat recovery system comprises a cooking barrel, a compressor, an embedded plate heat exchanger, a condensate water tank and a circulating pump, a liquid inlet of the cooking barrel is communicated with one end of a water supplementing pipe, an air inlet of the compressor is communicated with a waste gas outlet of the cooking barrel, and the compressor is used for compressing steam to obtain high-temperature and high-pressure steam. A steam inlet of the embedded plate heat exchanger is communicated with an air outlet of the compressor, and a steam outlet of the embedded plate heat exchanger is communicated with a steam inlet of the cooking barrel through a steam conveying pipe. By adopting the arrangement mode, waste heat steam is utilized twice to recover heat, high-efficiency energy utilization can be realized, energy consumption and carbon emission are reduced, and meanwhile, the cooking efficiency and the grain quality are improved.

The invention relates to a power station boiler self-adaptive load combined preheating recovery system which comprises a preheating system, a monitoring module and a regulation and control module, and the preheating system comprises a heat pipe heat exchanger set and a heat pump system; the heat pipe heat exchanger set is used for recycling high-grade flue gas waste heat in a combustion system in a power station boiler to preheat water in a water supply pipeline. The heat pump system is used for recycling low-grade flue gas waste heat of a second flue in the power station boiler to preheat ambient air at the inlet end of the air conveying fan; the monitoring module is used for collecting flue gas data of a first flue and a second flue in the power station boiler and a current load mode of the power station boiler; and the regulation and control module is used for dynamically regulating operation parameters of the heat pipe heat exchanger group and / or the heat pump system based on the flue gas data of the power station boiler and the current load mode, so that the regulated heat pipe heat exchanger group and the regulated heat pump system are used for recovering flue gas waste heat for preheating. Waste heat efficient recovery and stable operation of the boiler within the range from full load to deep adjustment load are achieved.

The invention discloses a thermal deoxygenization device, a steam generator and a heat pump unit. The thermal deoxygenization device comprises an upper cover plate and a lower cover plate, the middle baffle is located below the upper cover plate, and the middle baffle and the upper cover plate are connected in a sealed mode to form a water storage chamber; the bottom plate is provided with dripping holes and located below the middle baffle, a deoxidizing chamber is arranged between the middle baffle and the bottom plate, one end of the deoxidizing chamber is opened to serve as a steam inlet, and the other end of the deoxidizing chamber is opened to serve as a steam outlet; the baffle assembly is located in the deoxidizing chamber, the baffle assembly comprises a plurality of deflection baffles which are sequentially arranged at intervals from the steam inlet to the steam outlet, and a deflection flow channel is formed between every two adjacent deflection baffles; wherein the middle baffle is provided with a plurality of spray heads for spraying water in the water storage chamber to the deoxidizing chamber, and the spray heads are arranged along the baffling flow channel. High-temperature steam is used for heating water to achieve the deoxygenization effect, the installation space is saved, system heat is efficiently utilized, the influence of the environment on the system is reduced, and the maintenance cost is greatly reduced.

The invention relates to the technical field of gas-fired boilers, in particular to a distributed energy system based on a gas-fired boiler and an operation method. A three-layer convolutional neural network model is adopted by a load prediction module of the intelligent control platform, a cooling, heating and power load prediction value is output through convolutional layer feature extraction and a full connection layer, and an energy scheduling module is combined based on a model prediction control algorithm, and the lowest system operation cost is taken as a target. State variables such as steam pressure and the opening degree of a fuel regulating valve are optimized in a rolling mode, the load prediction accuracy and the multivariable collaborative optimization capacity are improved, and steam emptying is reduced. A steam exhaust port of a low-pressure steam turbine of a double-shaft back pressure type steam turbine set is divided into two paths which are connected with a steam-water heat exchanger and an absorption refrigerator respectively, steam exhaust flow distribution is adjusted through an electric adjusting valve, a water heat storage tank and a lithium battery energy storage system are combined, cooperative control is conducted through an energy management gateway, heat is stored and released during heat load fluctuation, and charging and discharging are conducted in the valley-peak section of a power grid. The heat-to-electricity ratio adjusting range is widened, and insufficient heat supply is reduced.

The invention relates to a boiler flue gas heat recovery system which comprises a heat supply device, the heat supply device comprises a boiler and a heat supply pipeline, the heat supply pipeline comprises a boiler water inlet pipe and a boiler water outlet pipe which communicate with the boiler, a flue is formed in a smoke exhaust device, and a first heat exchanger and a second heat exchanger are sequentially arranged in the flue in the flue gas flowing direction; the first waste heat recovery device comprises a first waste heat recovery flow path and a heat pump, the first waste heat recovery flow path is connected with the first heat exchanger and a boiler water inlet pipe, the heat pump is arranged on the first waste heat recovery flow path, the second waste heat recovery device comprises a second waste heat recovery flow path, and the second waste heat recovery flow path communicates with external air and a boiler. By arranging the heat pump, on one hand, the heat transfer temperature difference can be increased, smoke sensible heat and even part of latent heat can be efficiently recycled, on the other hand, the recycled heat can be flexibly adjusted according to changes of boiler loads, and therefore the system can adapt to changes of loads output by the system under different conditions.