130results about "Steam generation" patented technology

The utility model discloses an integrated grading flash evaporation deep heat recovery device for high-salt, high-scale and high-corrosion slurry, and belongs to the technical field of industrial energy conservation and desulfurization slurry waste heat heat supply. According to the integrated equipment, in order to solve the problems that due to graded flash evaporation and graded heat removal, the final-stage vacuumizing difficulty is too large, equipment assemblies are too many, the occupied area is too large, the manufacturing cost is too high, and operation and maintenance are difficult, flash evaporation tanks are combined into an integral graded flash evaporation tank, and a flash evaporation steam heater is combined into an integral graded heater; furthermore, all the components are combined into an integrated tank body, and all functional areas are separated by adopting partition plates. A first-stage special micro-differential pressure vacuum pump is added, and non-condensable gas of the last-stage heater is pumped out and sent to an inlet of the previous-stage heater or a conventional vacuum pump; alkaline water is sprayed to a space, where non-condensable gas is enriched, of a final-stage heater to absorb SO2 and reduce partial pressure, so that the temperature of a concentrated slurry outlet and the smoke exhaust temperature of a final-stage flash tank can be greatly reduced. The device is suitable for the fields of coal-fired boilers, sintering machines and industrial kilns requiring waste heat recovery.

The utility model discloses a heat recovery and utilization system and a micro-pressure steam heat energy unit, and an efficient heat energy recovery and reutilization loop is constructed through equipment such as an evaporator, a screw compressor, a condenser, an expansion valve and a flash tank. The evaporator absorbs heat from heat source water and evaporates a refrigerant into low-pressure gas, then high-temperature hot water is generated through the compression and condensation process, meanwhile, the flash tank is used for converting the high-temperature hot water into micro-pressure steam so as to meet the requirement for low-pressure steam in the system, by efficiently recycling and utilizing waste heat, the dependence of the system on external steam and electric power is reduced, and the energy consumption of the system is reduced. Therefore, energy efficiency is improved, operation cost is reduced, and energy waste and environmental influence are reduced.

The utility model discloses a high-vacuum-degree micro-pressure-difference control device for desulfurization slurry grading flash evaporation heat recovery, and belongs to the technical field of coal-fired boiler waste heat heat supply. The system aims at solving the problems that when desulfurization slurry flash evaporation is adopted for boiler flue gas waste heat recovery, much non-condensable gas such as SO2 can escape due to heat release and condensation, the volume of a vacuum system is relatively large, and consequently the high vacuum degree is difficult to maintain by adopting a conventional vacuumizing device, a special micro-differential pressure vacuum pump is added, and the vacuum degree is reduced; extracting non-condensable gas on the liquid level of the condensed water of the last-stage heater, and sending the non-condensable gas to a front-mounted heater matched with the last-stage flash tank; when necessary, alkaline water can be sprayed to the space, where non-condensable gas is enriched, of the final-stage heater so as to comprehensively absorb SO2 and other components to reduce the partial pressure, so that the micro-differential pressure vacuum pump can stably maintain the high-vacuum state of the final-stage heater, the temperature of a concentrated slurry outlet of the final-stage flash tank is greatly reduced, and the concentration rate of the final-stage flash tank is increased. And optimal operation conditions are created for greatly reducing the exhaust gas temperature and greatly improving the waste heat recovery amount.

The invention belongs to the technical field of separation and recovery, and particularly relates to separation and recovery equipment and process for an R410A mixed refrigerant based on a deep eutectic solvent. The separation and recovery equipment for the R410A mixed refrigerant based on the eutectic solvent comprises an absorption tower, a first flash tank and a second flash tank, the liquid outlet end and the liquid inlet end of the absorption tower are communicated and connected through a circulating pipe; the first flash tank and the second flash tank are arranged on the circulating pipe; a first heat exchanger is arranged on the circulating pipe and between the first flash tank and the second flash tank, and a second heat exchanger is arranged on the circulating pipe and between the second flash tank and the liquid inlet end of the absorption tower; the gas outlet end of the first flash tank is communicated with the gas inlet end of the absorption tower through a communicating pipe; a third heat exchanger is arranged on the communicating pipe. By adopting the equipment and the process provided by the invention, the recovery rates of R32 and R125 in the R410A mixed refrigerant both reach 95% or above.

The invention belongs to the technical field of industrial waste heat recovery, and particularly relates to a two-stage heat exchange dead steam waste heat recovery system based on an annular water curtain, which comprises a first-stage condensation collection heat exchange module, a second-stage condensation collection heat exchange module, a first-stage flash cap and a second-stage flash cap, the first-stage condensation collection heat exchange module is connected with the second-stage condensation collection heat exchange module in series, the first-stage flash cap is installed on the top of the first-stage condensation collection heat exchange module, and the second-stage flash cap is installed on the top of the second-stage condensation collection heat exchange module. Through the two stages of annular water curtains, exhaust steam gradient condensation is achieved, pipeline specification matching and operation control are optimized, the heat exchange efficiency and the system stability are improved, the manual operation intensity is reduced, the problems that an existing single-stage heat exchange efficiency is low, the sealing performance is poor, and parameters are difficult to control are effectively solved, and the energy utilization rate is remarkably increased.

The utility model relates to thermal power plant waste heat utilization technical field discloses a steam compression waste heat utilization system, including desulfurizing tower, the lower part of desulfurizing tower is passed through pipeline and is communicated with the input end of flash tank, the steam output end of flash tank is connected with steam compressor, steam compressor is communicated with heat user through pipeline, the water outlet of flash tank is communicated with the upper part of desulfurizing tower, the utility model utilizes the waste heat of high temperature water to produce flash steam, and adds pressure to flash steam for industrial steam, recycles waste heat and precious water data, and the economic benefit is produced to the steam supply to the outside, and the steam supply parameter is not influenced by unit load, and need not increase the water consumption index of power plant.

This invention discloses a polycrystalline silicon reduction heat energy utilization system and method. The system includes a reduction furnace body, a base, a heat exchange jacket, an internal coil in the base, an external heat exchange jacket for the return water pipe, and a flash tank assembly. The internal coil in the base has a double-layer structure and is connected by a vertical pipe. The heat exchange jacket is divided into several arc-shaped jackets with parallel branch pipes equipped with solenoid valves. The jacket is equipped with vibrating plates and flow guides. The return water pipe is fitted with a heat exchange jacket with a flow guide plate. The drain pipe and return water pipe are respectively connected to different flash tanks. The method utilizes an infrared temperature sensor linked with a solenoid valve to achieve zoned temperature measurement and flow initiation. Through temperature-controlled vibration coordination, gradient heat exchange and water collection, and tiered flash evaporation for energy supply, heat energy from different parts is recovered and multi-level steam is generated according to the temperature gradient to meet diverse steam demand. This invention constructs a multi-dimensional heat energy recovery system, achieving efficient heat energy recovery and tiered adaptive energy supply, accurately controlling the furnace temperature, improving production continuity and stability, and has significant energy-saving and practical value.

Provided is a method of testing for a leak in a fluid system. The method includes submerging at least a portion of an electrically conductive body in an electrolyte solution, with the electrically conductive body and electrolyte solution being in an internal chamber of a device. The method further includes directing an electrical signal to the electrically conductive body, causing a reaction between the electrically conductive body and the electrolyte solution to produce hydrogen. The method further includes injecting the hydrogen into the fluid system for leak detection.

The present invention relates to the technical field of cogeneration equipment, and specifically to a sustainable and stable water-electricity-steam cogeneration system, comprising: a water collector, a first adsorption device, a condenser, a second adsorption device, a first water tank, a second water tank, a hydrogen fuel cell stack, a third water tank, a flash tank, a compressor, and a steam supply unit; the water collector is connected to the condenser, which is respectively connected to the first and second adsorption devices and the third water tank; the first adsorption device is connected to the first and second water tanks; the second water tank is connected to the hydrogen fuel cell stack; the second adsorption device is connected to the first and second water tanks; the third water tank is connected to the flash tank; the flash tank is connected to the compressor; and the compressor is connected to the steam supply unit. This sustainable and stable water-electricity-steam cogeneration system solves the problems of unsustainable operation and unstable heat sources of traditional adsorption equipment units in water-scarce areas, while the system's electricity output comes from a zero-carbon emission source.

The utility model provides an efficient energy-saving system for outputting green steam through coupling of shallow geothermal energy and a high-temperature heat pump, and belongs to the technical field of energy systems. The problem that an existing steam supply system cannot generate green steam energy is solved. Comprising a shallow ground source heat pump system and a high-temperature heat pump system which are connected in series, the shallow ground source heat pump system comprises a buried pipe heat exchange system, a ground source side automatic make-up pump, a water collector, a ground source side circulating water pump, a water segregator and a ground source heat pump host, and the buried pipe heat exchange system is connected with the water collector and the water segregator; the high-temperature heat pump system comprises a heat source side circulating water pump, an evaporator, a compressor, an electronic expansion valve, a condenser, a flash evaporator, a high-temperature hot water circulating pump, a preheater and a high-temperature heat pump automatic make-up pump; according to the utility model, renewable geothermal energy and certain electric energy are utilized for assistance, high-temperature steam is output, the production load requirement of the park is met, carbon emission is avoided, carbon sink is increased, and the economic benefit is high.

The present invention relates to a system for treating a process fluid and, more specifically, to a system for treating a process fluid, the system recovering waste heat from a process fluid via heat exchange which is conducted by switching, according to the phase of the process fluid, between two condensers having different heat exchange capacities from one another, such that the system responds to the phase of the process fluid, which changes according to whether steam for recovering waste heat is generated, and thus can improve operation stability.

The invention discloses a heat pump system of a low-temperature methanol washing heat regeneration tower. The cost can be reduced. A tower kettle liquid pump sends tower kettle liquid into a high-temperature flash tank, the saturation temperature in the tower kettle liquid flash process is reduced to be lower than the tower top gas temperature, after flash evaporation, a gas phase enters a high-temperature compression stage front demister, a liquid phase enters a high-temperature evaporator, the tower kettle liquid passing through the high-temperature evaporator absorbs heat to form a gas phase and a liquid phase, the gas phase part enters the high-temperature compression stage front demister, and the liquid phase part enters the high-temperature compression stage front demister. The liquid phase enters a low-temperature flash tank, the saturation temperature of the tower kettle liquid in the low-temperature flash tank is reduced again, the gas phase enters a low-temperature compression demister after flash evaporation, the liquid phase enters a spraying pump, and the material entering the spraying pump enters a sprayer after being pressurized; methanol steam demisted by the low-temperature compression stage front demister is compressed by the low-temperature compression stage, the saturation pressure is increased, the methanol steam is overheated and then enters the high-temperature compression demister, and a gas phase of the high-temperature compression stage front demister enters the high-temperature compression stage, is compressed and then converges with liquid of the spray thrower to return to the tower kettle.

The utility model discloses a flash removal integrated waste water heat pump, which belongs to the technical field of heat pumps and is characterized in that a demister is arranged in a flash tank, dead steam generated by the flash tank provides a heat source for a heat pump positioned below the flash tank through inverted U-shaped flash steam channels, and a plurality of inverted U-shaped flash steam channels are connected through a gas passing tank; and the gas passing tank is connected with the heat pump through a plurality of pipelines. The concentrated solution obtained after the desulfurization slurry is treated by the flash tank is conveyed back to the desulfurization tower to be circularly sprayed, so that resource waste caused by traditional direct waste is avoided, and the slurry utilization rate is remarkably increased; meanwhile, the structure of a steam pipeline is simplified, for example, an inverted-U-shaped flash steam channel and a gas passing tank are intensively guided, and pipeline redundancy and maintenance blind areas caused by split equipment are avoided; liquid level monitoring and backwashing self-cleaning functions are built in the system, the design of an access door and a lifting lug is combined, centralized management and rapid maintenance are supported, and the operation and maintenance complexity is reduced.

Systems, methods, and apparatuses for utilizing heat are provided. A flash vessel structure includes a first flash chamber and a second flash chamber opposite the first flash chamber. The flash vessel structure is configured to receive a liquid media flow via the first flash chamber, flash evaporate a portion of the liquid media flow to generate a vapor, and drain the liquid media flow via a liquid outlet on the second flash chamber. Adjacent flash chambers are separated by a separator structure including a liquid opening submerged within the liquid media flow. Each flash chamber includes a vapor orifice configured to stay above the liquid media flow. The flash chambers are arranged along a horizontal direction that is substantially perpendicular to gravity. Compressors are coupled via a vapor channel to the flash structure to compress the vapor received from the respective flash chamber.

The heat recovery system is used for recovering heat of the reduction furnace, the reduction furnace comprises a furnace barrel and a base plate, an original furnace heat recovery system comprises a tail gas heat exchange unit and a base plate heat exchange unit, the base plate heat exchange unit comprises annular pipes and flange connecting pieces, the annular pipes comprise the first annular pipe and the second annular pipe, the first annular pipe is arranged close to the base plate, and the second annular pipe is arranged close to the base plate. The second ring pipe is far away from the chassis, and the first ring pipe and the second ring pipe are separated through a flange connecting piece; the tail gas heat exchange unit comprises a first tail gas jacket and a first flash tank, the first tail gas jacket is communicated with a second ring pipe, and the second ring pipe is communicated with the first flash tank. According to the heat recovery system of the reduction furnace, the heat recovery utilization rate is high, and the improvement cost is low.

The invention relates to the field of heat pump systems, in particular to a heat pump system, and aims to solve the problem that an existing heat pump system is low in heat exchange efficiency. In order to achieve the purpose, the heat pump system comprises a first refrigerant loop, a second refrigerant loop, a heat source passage structure, a first passage structure, a second passage structure and a third passage structure, the first passage structure, the second passage structure and the third passage structure are connected in series, and a first compressor, an intermediate heat exchanger, a first throttling device and an evaporator are sequentially arranged on the first refrigerant loop; a second compressor, a condenser, a second throttling device and an intermediate heat exchanger are sequentially arranged on the second refrigerant loop; the heat pump system is arranged to be of a first channel structure, heat exchange can be conducted between the heat source channel structure and the evaporator, heat exchange can be conducted between the second channel structure and the intermediate heat exchanger, and heat exchange can be conducted between the third channel structure and the condenser. According to the arrangement, the heat exchange temperature difference between a refrigerant and water is greatly reduced, the heat exchange efficiency is optimized, the energy loss is reduced, and therefore the energy efficiency ratio of the whole heat pump system is greatly increased.

The invention relates to the technical field of electrolytic hydrogen production, in particular to an electrolyte cooling device and method for an electrolytic hydrogen production system, and the device comprises a flash tank which is internally provided with a liquid level sensor; the electrolyte input pipeline is communicated with the flash tank, and a first one-way valve is arranged on the electrolyte input pipeline, so that the electrolyte flows from the electrolyte input pipeline to the flash tank in a one-way manner; the steam output pipeline is communicated with the flash tank, and a first valve is arranged on the steam output pipeline and used for connecting or disconnecting the steam output pipeline; the process gas input pipeline is communicated with the flash tank, and a second valve is arranged on the process gas input pipeline and used for communicating or cutting off the process gas input pipeline; and the electrolyte output pipeline is communicated with the flash tank, a second one-way valve and a pressure pump are arranged on the electrolyte output pipeline, and the second one-way valve enables the electrolyte to flow from the flash tank to the electrolyte output pipeline in a one-way mode. The flash evaporation cooling principle is adopted to replace a traditional heat exchange pipe cooling mode, heat energy loss in the heat exchange process is reduced, and the cooling efficiency is greatly improved.

This invention discloses an apparatus and method for co-producing steam using catalytic wet oxidation. The reactor of the apparatus is equipped with a heat extraction module, which includes a heat exchange chamber and a heat extraction medium inlet and outlet connecting to the heat exchange chamber. The heat extraction module also has multiple channels spaced apart from the heat exchange chamber along its thickness for radial flow of materials within the reactor. By incorporating a heat extraction module inside the reactor, this invention can promptly remove the heat of reaction from the catalytic wet oxidation reaction, ensuring the reactor operates at a constant temperature. This significantly improves the reactor's adaptability to TOC content in wastewater. Simultaneously, the heat removed from the reactor can be co-produced using a steam generator. This invention's reaction system not only achieves catalytic wet oxidation treatment of high-content organic wastewater but also realizes comprehensive heat utilization, further reducing wastewater treatment costs.

System (1) for producing work, heating and / or cooling, comprising a heat engine (2) for producing mechanical work, having a plurality of gears (18a, 18b; 23a, 23b; 26a, 26b; 29a, 29b; 30a, 30b, 30c) provided with teeth (D), defining working chambers (20) for expanding a fluid, and arranged to mesh with each other, a generator or alternator (15), connected to the gears (18a, 18b; 23a, 23b; 26a, 26b; 29a, 29b; 30a, 30b, 30c) of the heat engine (2) by means of at least one mechanical shaft, for converting into electric current the mechanical work of rotation of the gears (18a, 18b; 23a, 23b; 26a, 26b; 29a, 29b; 30a, 30b, 30c) induced by the direct thrust of the fluid on the teeth (D), a heat exchanger (3, 4), connected via a conduit to the heat engine (2), to cool and / or heat the fluid, a pump (5) having a plurality of compression stages for compressing the fluid and connected via a conduit to the heat exchanger (3, 4) and via a further conduit to the heat engine (2), a motor (14) to drive the pump (5); the system (1) being characterized in that the teeth (D) of the gears (18a, 18b; 23a, 23b; 26a, 26b; 29a, 29b; 30a, 30b, 30c) of the heat engine (2) are provided with dynamic gas seals (21) between the working chambers (20) to keep the fluid, which is in supercritical conditions, confined in a single working chamber (20) while it expands between the teeth (D) that form said working chamber (20); and the stages of the pump (5) are provided with dynamic gas seals (5b) between one stage and the other to keep the fluid, which is in supercritical conditions, confined to a single stage while it is compressed.

To provide a steam supply system capable of restarting a stopped steam compressor with a configuration that can save energy.SOLUTION: A steam supply system (1A) comprises: a flow regulator valve (3) that reduces the pressure of water to a negative pressure to generate negative-pressure water; a heat exchanger (5) that heats the negative-pressure water to generate negative-pressure steam; a steam compressor (7) that compresses the negative-pressure steam generated by the heat exchanger (5); an inlet steam pipe (11) that connects the heat exchanger (5) and the steam compressor (7); an outlet steam pipe (13) that is connected to the discharge side of the steam compressor (7); and a negative pressure generation unit (19) that sets the inlet steam pipe (11), the steam compressor (7), and the outlet steam pipe (13) to a negative pressure.SELECTED DRAWING: Figure 1

A system, method, and apparatus for generating high-pressure steam are provided. The compressor train includes a series of at least two compressors, a compressor train inlet, and a compressor train outlet. The compressor train outlet is configured to supply high-pressure steam to a facility. The flash vessel train includes a series of at least two flash vessels. The series of at least two flash vessels includes an end flash vessel located at one end of the flash vessel train. Further, a vapor outlet of the end flash vessel is fluidly coupled to the inlet of the compressor train. Further, vapor outlets of the remaining flash vessels in the series are fluidly coupled between the at least two compressors in the series.

The invention discloses a chilled water heat exchange system and method.The system comprises a flash valve, a compressor, a first recovery device, a second recovery device and a third recovery device, the first recovery device, the second recovery device and the third recovery device are sequentially communicated and used for circulating chilled water, and the first recovery device comprises a first heat exchanger and a second heat exchanger which are arranged in parallel; the first recovery device comprises at least one heat utilization device with chilled water as a heat source, the second recovery device comprises at least one heat utilization device with chilled water as a heat source, the third recovery device comprises a third heat exchanger, and the first heat exchanger, the second heat exchanger, the third heat exchanger, the flash valve and the compressor are communicated in sequence to form a heat exchange loop for butene circulation, the butene is used to heat the chilled water flowing through the first heat exchanger and the second heat exchanger and to cool the chilled water flowing through the third heater. According to the application, effective utilization of low-grade heat energy of the quenched water can be realized.

The utility model discloses a cascade type steam heat pump unit which comprises a first compressor, a second compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a first expansion valve, a second expansion valve, a first water pump, a second water pump, a third water pump, a flash tank and a first water tank. According to the cascade type high-temperature steam heat pump unit, different modes can be switched through the specific connection relation of all the components, the functions of heat storage at night and steam preparation in the daytime can be achieved, the advantage of valley electricity is fully played, the cascade type high-temperature steam heat pump unit is more energy-saving, and the operation cost is further reduced; in addition, the unit can obtain heat from chilled water to prepare steam, the purpose of combined supply of cold and heat is achieved, and the comprehensive energy efficiency of the system is further improved.

The utility model discloses a conversion and gasification waste heat comprehensive utilization device, which is characterized in that conversion gas enters a secondary conversion furnace for chemical reaction to release heat, and then enters a low-pressure steam generator for heat exchange with boiler water to produce 0.5 MPa saturated steam. After heat exchange, the converted gas enters a boiler feed water preheater to exchange heat with boiler feed water, the boiler feed water after heat exchange enters a low-pressure steam generator, the converted gas enters a first desalted water heater to exchange heat with normal-temperature desalted water, and hot desalted water after heat exchange enters a gasification deaerator. One path of low-pressure flash steam discharged from the top of the gasification low-pressure flash separator enters the gasification deaerator, the other path of low-pressure flash steam enters the generator set for power generation, during normal production, the third regulating valve is in a closed state, and all the gasification low-pressure flash steam is used for power generation. The conversion low-grade chemical reaction waste heat is used for heating the desalted water of the gasification deaerator, the gasification low-pressure flash steam is reduced and used for heating the desalted water of the gasification deaerator, the generating capacity of the gasification low-pressure flash steam is improved, and comprehensive utilization of conversion and gasification waste heat is achieved.

This invention provides a solar-thermal combined ammonia absorption cogeneration system, relating to the field of thermal system technology. The solar-thermal combined ammonia absorption cogeneration system includes a heat collection and storage subsystem, an energy storage subsystem, a refrigeration subsystem, and a power generation subsystem. The heat collection and storage subsystem is adapted to use solar energy to heat a heat-conducting medium to store a large amount of heat, and some of this heat can be used for heating. The energy storage subsystem is adapted to use the heat from the heat-conducting medium to heat a concentrated ammonia solution and separate it, generating a dilute ammonia solution and liquid ammonia. The refrigeration subsystem is adapted to use the throttling expansion process of liquid ammonia to absorb heat from the cold storage medium and store the cold energy. The power generation subsystem is adapted to use the heat from the heat-conducting medium to heat liquid ammonia to generate high-pressure ammonia vapor, and use the high-pressure ammonia vapor to drive a generator set to generate electricity. By applying the solar-thermal combined ammonia absorption cogeneration system provided by this invention, it is possible to utilize renewable energy for the combined supply of cold, heat, and electricity, thereby improving energy efficiency.

The invention discloses a steam generating device, and belongs to the field of power. The steam generation device comprises a subcritical carbon dioxide cycle, a supercritical carbon dioxide cycle, a supercritical carbon dioxide power generation cycle and a water supply path; the subcritical carbon dioxide cycle comprises a first compressor, a first path of a first condenser heat exchanger and a first evaporator which are sequentially connected end to end; the supercritical carbon dioxide cycle comprises a second compressor, a first path of a second condenser heat exchanger and a second evaporator which are sequentially connected end to end; the supercritical carbon dioxide power generation cycle comprises a third compressor, a turbine and a second path of the first condenser heat exchanger which are sequentially connected end to end, and a driving motor is arranged at the output end of the turbine. The heat transfer performance advantage of the carbon dioxide working medium can be fully exerted, and the purpose of preparing the high-temperature and high-pressure industrial steam is achieved.

The present disclosure teaches a system and method for generating power by a thermal power plant. The system and method includes a fuel heating chamber configured to receive a nano-thermite fuel, an induction assembly configured to inductively heat the fuel in the fuel heating chamber, and an electricity generating subsystem configured to convert heat from the heated nano-thermite fuel into electricity.

The utility model discloses a heat energy recovery system capable of reducing flash evaporation heat of steam condensate water, which comprises a condensate water tank used for recovering flash evaporation steam generated in a saccharification workshop for beer production; and the water source heat pump is connected into the first flash evaporation opening of the condensate water tank, flash evaporation steam of the condensate water tank is condensed and cooled into condensate water, and heat absorbed by the water source heat pump is used for heating water in the heat energy center. According to the steam condensate recovery device, the steam condensate recovery efficiency is improved.

The application discloses a steam heat pump assisted direct air carbon capture system and belongs to the field of air direct carbon capture cycles, which comprises an air carbon capture unit, a waste heat recovery unit, a refrigerant circulation unit and a flash tank, wherein the air carbon capture unit comprises a plurality of reaction beds arranged in parallel, a gas supply device and an exhaust device communicated with the reaction beds, wherein the reaction bed is used for adsorption and desorption of air carbon capture; the waste heat recovery unit comprises a waste heat supply pipeline, an evaporator and a waste heat recovery pipeline communicated in sequence; the refrigerant circulation unit comprises a compressor, a condenser, an expansion valve, an evaporator, a gas-liquid separator and an ejector pump communicated in sequence and forming a circulation loop; the flash tank is communicated with the reaction bed and the condenser respectively. The application effectively recovers waste heat in the waste heat source by using the evaporator, fully utilizes low-quality energy and realizes the effect of energy saving and emission reduction.