722results about "Steam use" patented technology

The invention relates to the technical field of coalification black water treatment, and particularly discloses a coal gasification black water flash steam waste heat steam turbine gradient utilization system which comprises a black water flash steam turbine module and a steam exhaust condensation module. The black water flash steam turbine module comprises a high-pressure flash evaporator, a low-pressure flash evaporator, a vacuum flash evaporator, a supplementary condensing steam turbine, a generator and a settling tank, and a water outlet of the vacuum flash evaporator is connected with the settling tank; the steam exhaust condensation module comprises an evaporative condenser and a condensate pump. Through the design of the scale scraping and water uniformizing piece, part of cooling water falling around the heat exchange coil from top to bottom falls on the water uniformizing plate to drive the water uniformizing plate to rotate, when the water uniformizing plate rotates, water on the water uniformizing plate is thrown out under the action of centrifugal force, cooling water without heat exchange can be uniformized to other heat exchange pipes for heat exchange, and the heat exchange efficiency is improved. Therefore, the cooling water flows more uniformly among the heat exchange coils, the utilization rate of the cooling water is improved, and the heat exchange efficiency 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 embodiment of the invention provides a thermal power plant waste heat gradient utilization management method and system, belongs to the field of energy and power engineering, and aims at solving the problems that in the prior art, waste heat gradient matching is unreasonable, the low-temperature waste heat recovery efficiency is low, and the system integration degree is insufficient. The method comprises the following steps: constructing a multi-physics field coupling digital twinborn model and performing real-time correction; establishing a dynamic matching matrix of the residual heat source and the heat consumption load based on balance analysis; solving a Pareto optimal operation scheme through a multi-objective optimization model; and generating and issuing a cooperative control instruction. The system comprises a panoramic data sensing module, a digital twin modeling module, a balance and optimization decision module and a cooperative control instruction generation module. Through global optimization and dynamic regulation and control, the waste heat utilization efficiency, the economical efficiency and the equipment reliability are remarkably improved.

The invention discloses an LNG (Liquefied Natural Gas) cold energy utilization system and method, and the system comprises an organic Rankine cycle power generation unit which is used for heating LNG to-70 DEG C to-40 DEG C and conveying the heated LNG to an intermediate medium cold storage unit; the intermediate medium cold storage unit is used for transferring the cold energy of the LNG to an intermediate medium and heating the LNG into gaseous NG at the same time; and the gas-liquid carbon dioxide energy storage unit is used for transferring the cold energy of the intermediate medium to carbon dioxide. The ultralow-temperature LNG cold energy at the front end is recycled through the organic Rankine cycle power generation unit, direct contact between carbon dioxide and LNG is avoided through the intermediate medium cold storage unit, the LNG tail end cold energy is effectively recycled and effectively transmitted to all links of the gas-liquid carbon dioxide energy storage unit, efficient recycling of the LNG cold energy is achieved, and the energy storage peak shaving capacity is achieved.

Systems and methods for generating and a controller for controlling generation of geothermal power in an organic Rankine cycle (ORC) operation in the vicinity of a wellhead during hydrocarbon production to thereby supply electrical power to one or more of in-field operational equipment, a grid power structure, and an energy storage device. In an embodiment, during hydrocarbon production, a temperature of a flow of wellhead fluid from the wellhead or working fluid may be determined. If the temperature is above a vaporous phase change threshold of the working fluid, heat exchanger valves may be opened to divert flow of wellhead fluid to heat exchangers to facilitate heat transfer from the flow of wellhead fluid to working fluid through the heat exchangers, thereby to cause the working fluid to change from a liquid to vapor, the vapor to cause a generator to generate electrical power via rotation of an expander.

The embodiment of the invention discloses a peak regulation method, device and equipment for a cogeneration unit and a storage medium, and relates to the technical field of electric power, and the method comprises the steps: determining the heat user demand heat of a preset region in a current unit time length based on the heat supply scene information of heat users in the preset region and a predicted outdoor temperature sequence of the preset region in the current unit time length, based on heat supply network heat supply steam information extracted from the combined heat and power generation unit by a heat supply network heat supply system in the preset area in the current unit time, heat source heat supply heat of the preset area in the current unit time is determined; the supply and demand deviation is determined according to the heat user demand heat and the heat source heat supply heat, and when the supply and demand deviation is larger than a set deviation threshold value, a heat storage adjusting valve is opened to start a heat storage mode of the heat supply network heat supply system, and when the heat user demand heat is larger than the heat source heat supply heat, heat stored by the heat supply network heat supply system in the heat storage mode is used for heat supply. And the peak regulation flexibility of the cogeneration unit is improved in a peak load shifting manner.

The invention discloses a source and storage integrated low-carbon power generation system and an operation method. The system comprises a coal-fired power generation subsystem, a decarburization subsystem and a pump heat energy storage subsystem. In order to improve the operation flexibility and the energy efficiency level of the system, the system is optimized as follows: (1) in a low ebb of electricity consumption, electric energy is output to drive a compressor to pressurize and heat steam extracted by an intermediate-pressure cylinder, then molten salt is heated, and then the steam enters a reboiler after acting through an expansion machine; and finally, redundant electric energy is converted into heat energy of the fused salt to be stored. And (2) in the peak period of power utilization, the feed water from the deaerator is heated by the high-temperature fused salt stored in the fused salt storage tank and then enters the expansion machine to do work, so that the output of the decarburization coal-fired power generation unit is improved. And the extracted steam of the intermediate-pressure cylinder acts through the expansion machine and then enters the reboiler. And (3) normal-temperature water serves as a heat absorption working medium, waste heat in the decarburization process is sequentially absorbed according to the heat grade, and part of medium-pressure cylinder extraction steam is replaced under the action of the ejector to provide heat for the reboiler. According to the system, the carbon capture energy efficiency punishment is effectively reduced, and the operation flexibility is 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 discloses a deep peak regulation and frequency modulation heat energy storage system and method coupled with a coal-fired unit, and belongs to the technical field of coal-fired unit flexible transformation and power grid regulation. Aiming at the problems that a single fused salt / solid heat storage occupies a large area, the initial investment is high, a steam generation system is complicated, and a conventional coal-fired unit is difficult to meet the requirements that the minimum power generation output of a new generation coal-electricity pilot demonstration unit is less than or equal to 20% Pe, and deep peak regulation is realized to give consideration to primary frequency modulation performance through self or auxiliary regulation as much as possible in the specification of power generation and transformation energy (2025) 363. The system comprises a heat energy storage unit and a coal-fired unit, the heat energy storage unit comprises a demineralized water supply water tank, an electrode steam boiler, a spherical tank and a heat storage type steam temperature increasing device, and the structure of spherical tank flash evaporation steam supply and heat storage temperature increasing sensible heat supplementing is adopted to be matched with steam supplementing of a steam turbine. The combined minimum power generation output of the two can be reduced to 10% Pe, the peak increase output is at least 5.6% Pe, primary frequency modulation is assisted by increasing and decreasing the power consumption of the electrode steam boiler, and new energy consumption is assisted.

The invention belongs to the technical field of gas turbines, and relates to an indirect heating biomass gas turbine system and a method thereof, the indirect heating biomass gas turbine system comprises an air compressor, an air turbine, a generator, a combustion chamber, a first waste heat recovery module, an indirect heating module, a second waste heat recovery module and a third waste heat recovery module. The compressed air is heated in a mode of indirect heat exchange between the compressed air and the flue gas, direct contact between fuel combustion products and turbine blades is avoided, the problems of corrosion, dust deposition, abrasion, scaling and the like of the turbine blades are effectively prevented, the service life of core components such as the turbine blades is prolonged, and meanwhile the service life of the turbine blades is prolonged. The tail gas waste heat of the air turbine is used for heating compressed air, the average heat absorption temperature of air is increased, and therefore the fuel combustion thermoelectric conversion efficiency is improved, in addition, heat supply and cold supply are conducted on users through the tail gas waste heat of the air turbine, the energy utilization efficiency of the system is improved, and the energy consumption is reduced. And combined heat and power generation can be realized in winter, and combined cooling and power generation can be realized in summer.

The invention belongs to the technical field of comprehensive energy utilization, and relates to a multi-energy cogeneration carbon dioxide power cycle system and a method thereof. The multi-energy cogeneration carbon dioxide power cycle system comprises a gas storage bin, a first compressor, a first cooler, a liquid storage tank, a first turbine, a rear preheater, a hot water supply unit, a waste heat recovery unit and a cold energy recovery unit. The hot water supply unit supplies hot water to absorb heat generated by multi-stage compression of carbon dioxide to obtain steam, so that the steam is supplied to a user, and the waste heat recovery unit and the hot water supply unit are matched to absorb and store the waste heat of the system to heat the carbon dioxide after expansion acting. And then the cold energy recovery unit is used for recovering the cold energy in the carbon dioxide subjected to expansion acting so as to supply cold water to a user or make ice, so that the waste heat and the cold energy in the power circulation process can be recovered, steam and the cold energy including electric energy are output, the energy consumption of the system is reduced, and the energy utilization efficiency of the system is also improved.

The present invention provides a power plant waste heat recovery system and method, which simultaneously recovers a wide range of waste heat from power plants and also implements cascade recycling of waste heat from power plants. The present invention simultaneously recycles all waste heat from thermal power plants, including four types of waste heat: flue gas waste heat, circulating water waste heat, furnace wall waste heat, and slag waste heat. In addition, according to the different characteristics of waste heat, different heat pumps and different heat exchangers are selected to efficiently recover all recoverable waste heat, thereby improving the energy conversion efficiency of the power plant. The present invention designs a cascade recycling of waste heat from power plants, including three recycling methods: a low-pressure steam turbine generator set, a low-boiling-point working fluid generator set, and a heating pipeline. On the one hand, the present invention improves the applicability of the power plant waste heat recovery system, and is applicable to different types of thermal power plants, as well as to the effects of different seasons and environmental temperature factors on various waste heat. On the other hand, by comparing and matching the temperature and pressure set values ​​of the recycling equipment with the measured values, the waste heat is maximized and waste heat is avoided.

MEANS FOR SOLVING THE PROBLEM: To provide an inlet duct system for a heat recovery steam generator.SOLUTION: A system (10) includes an exhaust diffuser system (22) for a heat recovery steam generator (HRSG) (16). The system (10) includes an inlet portion (23), a diffuser portion (24) axially extending from the inlet portion (23), and an outlet portion (26) fluidly coupled to an axial distal end of the diffuser portion (24), where an outlet extent (252) of the outlet portion (26) is greater than an inlet extent (254) of the inlet portion (23). The diffuser portion (24) includes multiple wall portions (272), and the multiple wall portions (272) are incrementally angled relative to an axial extent (258) extending from the inlet portion (23) to the outlet portion (26). The system (10) may further include a gas turbine engine (12) coupled to the inlet portion (23), and the HRSG (16) coupled to the outlet portion (26).SELECTED DRAWING: Figure 2

The invention discloses a thermal power deep peak shaving system and an operation method thereof. The thermal power deep peak shaving system comprises a boiler, a steam turbine generator unit, a water supply unit, a high-temperature molten salt tank, a low-temperature molten salt tank, a molten salt steam generator, a heat pump heat absorber, a heat pump heater, a high-pressure steam turbine, a medium-pressure steam turbine, a heat pump compressor and a heat pump expansion machine. A part of main steam shunted from the boiler enters the high-pressure steam turbine to do work, a part of hot reheat steam shunted from the boiler enters the medium-pressure steam turbine to do work, and the steam working by the medium-pressure steam turbine flows through the high-temperature side of the heat pump heat absorber to release heat; a circulating medium flowing out of the heat pump expansion machine flows through the heat pump heat absorber to absorb heat and then flows into the heat pump compressor; a circulating medium flowing out of the heat pump compressor firstly flows through the heat pump heater to release heat and then flows into the heat pump expansion machine; fused salt flowing out of the low-temperature fused salt tank flows through the heat pump heater to absorb heat and then flows into the high-temperature fused salt tank. The load of the coal-fired power generation unit can be reduced, and the electricity-electricity efficiency in the heat storage and release process is improved.

The invention relates to a heat pump device that makes it possible to utilize waste heat from technical processes or from the environment to simultaneously generate useful steam (12) and useful heat. The heat pump device comprises a heat pump module (1), a low-pressure steam generator (2) for generating low-pressure steam (11), a steam jet compressor (3) for generating useful steam (12) from high-pressure steam (10) and the low-pressure steam (11), and a first heat exchanger (4) for providing the useful heat. The heat pump device is suitable for applications where there is a simultaneous demand for both steam and heat.

The invention provides a dynamic peak regulation method of a thermal power plant using high-temperature heat energy storage, and belongs to the technical field of dynamic peak regulation of thermal power plants. The current heat storage capacity and the residual heat storage capacity of a heat storage tank are calculated through an intelligent peak regulation decision maker, the optimal steam extraction proportion and the heat storage release strategy are determined based on a dynamic peak regulation game model, and intermediate-stage steam of a steam turbine is extracted to the heat storage tank for heat storage according to the optimal steam extraction proportion in the power grid load valley period. The heat storage tank heat release system is started in the peak load period of the power grid to increase the power generation power to achieve power compensation, the optimal steam extraction proportion is adjusted in real time through an intelligent peak regulation decision maker, and a heat storage efficiency monitoring system is established to monitor the operation state of the heat storage tank in real time and optimize operation parameters. The technical problem that the optimal steam extraction proportion cannot be determined in real time is solved.

This control device comprises: an acquiring unit for acquiring, as a first inlet pressure, a pressure value of first steam on a first inlet side as seen from a first regulating valve of a first turbine that rotates using the first steam, which is supplied from the first inlet via the first regulating valve, and acquiring, as a second inlet pressure, a pressure value of second steam on a second inlet side as seen from a second regulating valve of a second turbine that rotates on the same rotating shaft as the first turbine using the second steam, which is supplied from the second inlet via the second regulating valve; and a control unit for regulating an opening degree of the first regulating valve and an opening degree of the second regulating valve in accordance with the first inlet pressure and the second inlet pressure.

The invention discloses a compressed carbon dioxide energy storage system based on phase change heat storage and regenerative coupling and a deep peak regulation method, relates to the technical field of energy storage, and constructs a three-stage cascade heating chain. The compressed carbon dioxide energy storage system comprises a compressor unit, a high-pressure tank, a low-pressure tank, a regeneration heater, a PCM packed bed and a turbine generator unit. An outlet of the low-pressure tank is connected with an inlet of a working medium channel in the regeneration heater through the compressor unit and the high-pressure tank, an outlet of the working medium channel in the regeneration heater is connected with an inlet of a working medium channel in the PCM packed bed, and an outlet of the working medium channel in the PCM packed bed is connected with an inlet of a heat source channel in the regeneration heater through the turbine generator set. An outlet of a heat source channel in the regeneration heater is connected with an inlet of the low-pressure tank through the first air cooler. According to the method, the output power, the energy storage density and the peak regulation response speed of the system are remarkably improved, and an efficient deep peak regulation solution is provided for renewable energy source grid connection.

Provided is a control method with which, in a plant combining a GTCC and a CO2 recovery device, it is possible to supply sufficient steam to the CO2 recovery device even during start-up of the GTCC. Specifically provided is a steam supply system for supplying steam generated in a heat recovery steam generator to a CO2 recovery device that recovers CO2 from exhaust gas discharged by a power generation plant, which includes a gas turbine, the heat recovery steam generator, and a steam turbine, wherein medium-pressure steam generated in the heat recovery steam generator is supplied to the CO2 recovery device during start-up of the power generation plant.

According to the energy storage system based on LNG cold energy gradient utilization and waste heat recovery, LNG high-grade cold energy is stored through the cold storage device in the power utilization peak period, and low-grade cold energy is directly used for power generation; cold energy of the LNG is directly subjected to heat exchange with air in the electricity utilization trough period, and meanwhile cold energy of the cold storage device is applied to the air; the cold energy is utilized to the greatest extent, and the energy storage capacity of the system is increased. High-grade heat energy is utilized by heating high-pressure air at an inlet of the expansion machine through waste heat, residual low-grade heat is recycled through Kalina circulation, the energy storage system is based on an energy storage technical route of LNG cold energy gradient utilization and waste heat recycling, the efficiency and capacity of the energy storage system are improved through an external cold source and a heat source, and the energy storage efficiency is improved. And in addition, waste cold and waste heat are utilized in a gradient mode, and the good practical value is achieved.

The invention discloses a wide-load and low-carbon gas combined heat and power generation and solid waste utilization coupling system which comprises a gas turbine power generation unit, a combined heat and power generation unit, a solid waste pyrolysis and gasification unit and a heat storage device. High-temperature flue gas of the gas turbine power generation unit is connected into the combined heat and power generation unit, a plurality of steam turbines in the combined heat and power generation unit are matched with a steam turbine generator to supply power to the outside of a plant, and the steam turbines are connected with a heat supply steam main pipe and communicated with the outside of the plant and a heat storage device through the heat supply steam main pipe to conduct heat transmission. The solid waste pyrolysis and gasification unit provides synthesis gas for the gas turbine power generation unit and the combined heat and power generation unit after treating input solid waste and communicates with the heat storage device for heat transmission. The operation flexibility can be improved, after the steam turbine stops working, the heat supply mother pipe can be used for conducting heat preservation on the stopped steam turbine so that the stopped steam turbine can be in a warm state, and the starting time is shortened.

The invention provides a self-adaptive adjustment method and system for steam exhaust of a steam turbine, and belongs to the technical field of steam exhaust of steam turbines. The self-adaptive adjustment method comprises the following steps: acquiring multi-dimensional data based on a sensor deployed on a steam turbine, and preprocessing the multi-dimensional data to generate a preprocessed data packet; performing feature vector extraction and weighted fusion according to the preprocessed data packet, and determining an operation mode identifier of the steam exhaust system of the steam turbine in combination with a preset state evaluation rule base; generating a hierarchical cooperative control strategy based on the identified operation mode identifier and the weighted fusion feature vector, dynamically adjusting the priority and the activation state of the hierarchical cooperative control strategy, and generating a comprehensive control instruction packet; and executing the comprehensive control instruction packet by using a multi-stage actuator, and performing execution confirmation and feedback. The purposes that the waste heat recovery amount is increased, the system back pressure fluctuation is reduced, the service life of water treatment resin is prolonged, the manual intervention frequency is reduced, and the operation and maintenance efficiency is improved are achieved.

The invention relates to the technical field of heating, in particular to a heating system based on waste heat recovery of a generator set, which comprises a waste heat collection unit comprising a plate heat exchanger and a cooling tower which are connected in parallel on a condenser circulating pipeline of the generator set, and a switching valve group is arranged between the plate heat exchanger and the cooling tower; the underground energy storage unit comprises a first mining and recharging well and a second mining and recharging well which are connected with the plate heat exchanger through a heat exchange pipeline, and the bottoms of the first mining and recharging well and the second mining and recharging well are thermally coupled through a high-heat-conduction filling layer; the heat pump unit comprises a lithium bromide absorption heat pump, and a low-temperature heat source inlet of the lithium bromide absorption heat pump is connected with an outlet of the plate heat exchanger and a water pumping pipeline of the first mining and recharging well in parallel. Compared with the prior art, the system has the advantages that the underground energy storage unit and the switching valve group are arranged to operate cooperatively and work cooperatively, heat supply safety is guaranteed, meanwhile, overground and underground integrated waste heat regulation, storage, release and control are achieved, and the stability, the regulation capacity and the energy comprehensive utilization efficiency of the system are improved.

The invention relates to the technical field of ship ammonia fuel power systems, in particular to an ammonia fuel waste heat and Kalina cycle coupling utilization system which comprises an ammonia fuel supply system and a Kalina cycle system, the ammonia fuel supply system comprises a fuel tank and an engine, and low-temperature ammonia fuel in the fuel tank is conveyed to the engine through a supply pipe to do work; the Kalina circulating system comprises a separator, a steam turbine and a generator, ammonia gas in the ammonia fuel supply system is mixed with exhaust gas through an ammonia gas pipe to form an ammonia water solution, and the ammonia water solution sequentially flows through a second heat exchanger and a third heat exchanger through a pipeline and then enters the separator; ammonia steam is separated from the separator to drive the steam turbine to do work and generate electricity through the generator, and exhaust gas generated after the steam turbine does work is mixed with ammonia gas in the ammonia fuel supply system; high-temperature smoke generated after the engine does work is exhausted after heat exchange through the third heat exchanger through the smoke exhaust pipe, and surplus fuel after the engine does work is subjected to heat exchange through the second heat exchanger through the liquid return pipe and then flows back to the fuel tank.

The invention belongs to the technical field of thermal power generating unit steam supply, and particularly discloses a thermal power plant coupling steam ejector and multi-heat-source fused salt heat storage steam supply system which comprises a thermal power generating unit body, a fused salt heat storage system and a steam supply system. And main steam and flue gas are used as heat sources for combined heat storage, on one hand, the main steam after heat release is used for extracting steam to supply low-parameter industrial steam, on the other hand, fused salt is used for storing heat to generate steam to eject a steam turbine intermediate-pressure cylinder to exhaust steam, and therefore high-parameter industrial steam is supplied, and the energy consumption is reduced. And peak regulation and heat supply tasks of the thermal power plant are synchronously met. According to the system, the deep peak regulation and industrial steam supply capacity of the thermal power generating unit is greatly improved, different steam supply parameter requirements can be met by adjusting parameters of the fused salt heat storage system and the structure of the ejector, flexible regulation and control of industrial steam supply of the thermal power generating unit are achieved, and the problems of a thermal power plant in the aspects of heat storage, peak regulation and steam supply are solved.

The invention discloses a thermal power generating unit, supercritical carbon dioxide and compressed air combined cycle energy storage system and an operation method, and belongs to the technical field of peak and frequency regulation and waste heat utilization of energy systems. The system comprises a compressed air energy storage subsystem, a supercritical CO2 Brayton cycle subsystem, a thermal power collaborative heat exchange subsystem, a coupling heat exchange device and an intelligent control system. In the energy storage stage, efficient compression is achieved through multi-stage compression and intermediate cooling, and air and CO2 are stored separately; in the energy release stage, compressed air drives an air expansion machine to generate power after being subjected to steam extraction and flue gas preheating of the thermal power plant, and meanwhile supercritical CO2 circularly utilizes waste heat of boiler tail gas of the thermal power plant and system tail gas to be preheated and expanded to serve as a second heat source channel to improve the output power. The intelligent control system coordinates the operation conditions of all the subsystems, and flexible switching of the system under various load and heat source boundaries is achieved. The system has high energy efficiency, high response speed and high integration level, and the peak regulation capacity and the clean operation level of the thermal power generating unit are remarkably improved.

The utility model relates to the technical field of waste heat utilization of centrifugal air compressors, in particular to a tar residue treatment system. The centrifugal air compressor is provided with N stages of compressors, N is larger than or equal to 2, and the N stages of compressors are connected with the N-1 efficient heat exchangers in series through pipelines. An outlet of the high-efficiency heat exchanger is connected with an inlet pipeline of the organic working medium-hot water heat exchanger, an outlet of the organic working medium-hot water heat exchanger is connected with an inlet pipeline of the high-efficiency heat exchanger to form a circulating water system, and the water replenishing pipeline is connected with the circulating water system; an outlet of the organic working medium-hot water heat exchanger is connected with an inlet pipeline of a working medium expansion machine, an outlet of the working medium expansion machine is connected with an inlet pipeline of a working medium condenser, and an outlet of the working medium condenser is connected with an inlet pipeline of the organic working medium-hot water heat exchanger to form an organic working medium circulating system; the working medium expander is connected with a generator pipeline. The waste heat of the centrifugal air compressor can be effectively utilized, and the current situation of insufficient power supply of a factory can be relieved.

The system comprises a power generation system and a heat supply system, the power generation system comprises a boiler, a carbon dioxide turbine, a heat regenerator, a precooler, a compressor and a motor generator, an outlet of the boiler is connected with an inlet of the turbine, an outlet of the turbine is connected with a hot side inlet of the heat regenerator, and an outlet of the compressor is connected with a hot side inlet of the precooler. An outlet of the precooler is connected with an inlet of the compressor, an outlet of the compressor is connected with a cold-side inlet of the heat regenerator, a cold-side outlet of the heat regenerator is connected with an inlet of the boiler, and the compressor and the turbine are respectively connected with the motor generator. The heat supply requirement can be met, complete thermoelectric decoupling is achieved, and the flexibility of the supercritical carbon dioxide cycle generator set is fully exerted while stable heat supply is achieved.

The invention belongs to the technical field of clean energy power generation and energy storage, and particularly relates to a multi-coupling liquid metal thermoelectric conversion system. The system comprises a liquid metal reactor module, a photo-thermal system module, a liquid metal energy storage module and an energy conversion module, the liquid metal reactor module is a core base load energy source of the system; the photo-thermal system module is used as peak regulation and supplementary energy; the liquid metal energy storage module serves as a shared energy storage unit of the nuclear energy and photo-thermal system. The problems that nuclear energy peak regulation flexibility is poor, photo-thermal power generation is intermittent, and a traditional molten salt system is limited in high-temperature performance and slow in response can be solved.

The utility model discloses a power plant waste heat comprehensive utilization system, and relates to the technical field of energy conservation and environmental protection. According to the technical key points, the system comprises a warm air blower connected with an indirect air cooling system, and the warm air blower is installed on the inlet side of a first induced draft fan; an air outlet of the first induced draft fan is connected with one end of the air side of the air preheater, and the other end of the air side of the air preheater is connected with the boiler; one end of the smoke side of the air preheater is connected with a flue at the tail of the boiler, and the other end of the smoke side of the air preheater is connected with an air inlet of the low-pressure economizer; a gas outlet of the low-pressure economizer is connected with the tail gas treatment module. According to the scheme, the exhaust steam waste heat of the steam turbine and the exhaust smoke waste heat of the boiler are comprehensively utilized at the same time, so that the two parts of waste heat are utilized to the greatest extent, the coal consumption of a power plant is reduced, and meanwhile, the heat pollution to the environment can be reduced.