36results about How to "Realize energy cascade utilization" patented technology

A heating steam-extraction and heating-supply system adopting a high-back-pressure small steam turbine mainly comprises an intermediate-pressure cylinder, a low-pressure cylinder, the high-back-pressure small steam turbine, a peak-load calorifier, a front calorifier, an asynchronous generator, a drainage pump, an electric gate valve, an electric control valve, an electric butterfly valve, a circulating water pump, a heat supply network water supply pipe and a heat supply network return water pipe. The system is mainly used for turbine heating steam extraction heating supply reconstruction projects at the capacity level of subcritical 300 MW or above. High-quality steam pumped through a low-pressure communicating pipe passes through the high-back-pressure small steam turbine to do work; the steam enters the front calorifier to heat circulating water of a heat supply network after being depressurized. During the heating period, the high-back-pressure small steam turbine is made to operate at full load as far as possible, and the requirements for adjustment of changes of heating load are met by adjusting the peak-load calorifier. The circulating water of the heat supply network enters the front calorifier and the peak-load calorifier in sequence through the heat supply network return water pipe, is heated and then is supplied to heat consumers through the heat supply network water supply pipe. By means of the system, the power generation capacity of a unit is improved, gradient utilization of energy is realized, and the system has good economy and operating flexibility.

The invention discloses a supercritical carbon dioxide circulation and sea water desalination coupled vessel nuclear power system which comprises a reactor cabin, a ship cabin and a propelling device,the reactor cabin comprises a high-temperature gas cooled reactor system, and the ship cabin comprises a supercritical carbon dioxide power circulation system and a sea water desalination subsystem.A first-stage intermediate heat exchanger and a second-stage intermediate heat exchanger are arranged on the two sides of a high-temperature gas cooled reactor in the high-temperature gas cooled reactor system correspondingly. The supercritical carbon dioxide power circulation system is coupled with the high-temperature gas cooled reactor system through a first-stage intermediate heat exchanger and a second-stage intermediate heat exchanger. The seawater desalination subsystem is coupled with the supercritical carbon dioxide power circulation system through a precooler and an intercooler. Thepropelling device is connected with the supercritical carbon dioxide power circulation system. Vessel propulsion power and electric power are provided through the supercritical carbon dioxide circulation system, fresh water needed by the whole vessel is provided in cooperation with the sea water desalination system, the vessel is driven to sail in a direct propulsion mode, and the energy conversion rate and the device compactness are improved.

The invention discloses a power and heat co-supply system based on a Stirling engine and a power and heat co-supply method of the system. Grids cannot be laid in a great majority of families in mountainous areas and underdevelopment areas. Biomass combusts in a combustion furnace, molten salt in a heat storage pot is heated, and the high-temperature molten salt heats a hot end of the Stirling engine to drive the Stirling engine to generate power; a circulating water system for cooling a cold end of the Stirling engine flows through the cold end of the Stirling engine and an economizer, waste heat of the two parts is recovered, and hot water at 50-100 DEG C is finally obtained. With the adoption of the system and the method, the problems that the Stirling engine causes severe ash accumulation and coking at the hot end when applied to a biomass direct-combustion power generation boiler and the power generation efficiency is decreased are solved; gradient utilization of energy is realized and the thermal efficiency of the system is high; power and heat co-supply is realized and the energy saving effect is remarkable; the power output quality is stable, the system is very suitable for energy storage and release, and a way is provided for solving the problem about power in power islands in remote areas.

The invention provides a system and method for treating industrial waste liquid based on carrier gas extraction and low-temperature mass transfer. The system comprises an absorber, wherein the absorber is connected with a condenser, the condenser is connected with a waste liquid circulating pump, and the waste liquid circulating pump is connected with a liquid distributor of the absorber and a heater in the absorber; the system also comprises an analyzer, wherein the analyzer is connected with an evaporator, the evaporator is connected with a clean water pump, and the clean water pump is connected with a liquid distributor of the analyzer and a cooler in analyzer; an air outlet of the absorber is connected with an air inlet of the analyzer; an air outlet of the analyzer is connected with an air inlet of the absorber; and an air channel between the air outlet of the analyzer and the air inlet of the absorber is provided with a circulating fan and an adsorber. According to the invention,air can be utilized as a mass transfer medium to realize water migration in industrial waste liquid under the condition of a low temperature, and the system operates under normal pressure and is suitable for treatment of corrosive liquid which is crystallized easily and scaled easily, so that a series of pretreatment procedures such as precipitation, oil removal, pH value adjustment and the likerequired by conventional waste liquid treatment are greatly reduced.

The invention discloses a solar energy auxiliary re-heat and back-heat thermal power generation system. A boiler is sequentially connected with a stream turbine, a condenser, a main circulation pump, a bleeder heater to form a main circulation circuit; a condenser mirror field focuses the sun light to a solar energy heat absorber; the solar energy heat absorber, a solar energy high temperature re-heater, a solar energy back-heat re-heater, a secondary circulation pump, the solar energy heat absorber are sequentially connected with to form a secondary circulation circuit; the inlet of a low pressure cylinder of the stream turbine is sequentially connected with the solar energy high temperature re-heater and the outlet of a high pressure cylinder of the stream turbine to form a re-heat circuit; a re-heat extraction opening of the low pressure cylinder of the stream turbine is sequentially connected with the solar energy back-heat re-heater, the bleeder heater; the stream turbine is connected with an electric generator. According to the solar energy auxiliary re-heat and back-heat thermal power generation system and an emission reduction and dilatation method, by the adoption of solar energy secondary circulation, the goal of reducing coal consumption and improving system total power is realized through increasing re-heat field and back-heat re-heat. On a basis of taking full advantage of the solar energy, the original system can automatically operate and the function of utilizing the solar energy thermal storage to meet the supply energy demand of adjusting peaks and valleys of the system is achieved.

The invention relates to a CO2 trapping system based on a chemical-looping combustion coupled supercritical hydrothermal reaction, and a working method. In an existing chemical-looping combustion cycle reaction, an oxygen carrier is sintered and melted, and consequently the cycle reaction rate is decreased. The CO2 trapping system comprises a chemical-looping combustion system which comprises an air reactor, a pyrolyzing furnace, a fuel reactor and a cyclone separator, and the pyrolyzing furnace is connected with the air reactor. The CO2 trapping system is characterized by further comprising aCO2 storage device, a coal water slurry system and a supercritical hydrothermal reaction system, wherein the coal water slurry system comprises coal grinding equipment, a water storage tank, a mixingtank, a colloid tank and a slurry storage tank, and the water storage tank, the mixing tank, the colloid tank and the slurry storage tank are sequentially connected through pipelines; and the supercritical hydrothermal reaction system comprises a high-pressure coal water slurry pump, a supercritical water oxidation reactor, a preheater and a CO2 separator, and the preheater is connected with thesupercritical water oxidation reactor. The chemical-looping combustion economy and the energy utilization efficiency are improved, and CO2 can be trapped with the low cost and low energy consumption.

The invention relates to a hazardous waste salt pyrolysis system and a pyrolysis process thereof, the hazardous waste salt pyrolysis system is used for removing organic impurities in hazardous waste salt, the pyrolysis system comprises a drying reactor (1), a crusher (2), a pyrolysis reactor (3), a cyclone dust collector (4), a spray tower (5), a demister (6), an incinerator (7) and a heat exchanger (8); a solid outlet of the drying reactor is connected with a solid inlet of the pyrolysis reactor through the crusher, and a gas outlet of the drying reactor is connected with a first inlet of the cyclone dust collector; the pyrolysis salt outlet (322) is connected with an inorganic matter impurity removal system (9), the pyrolysis gas outlet (321) is connected with a second inlet of the cyclone dust collector, and the heating flue gas outlet (302) is connected with a gas inlet of the drying reactor; an outlet of the cyclone dust collector is connected with an inlet of the heat exchanger through the spray tower, the demister and the incinerator, a flue gas outlet of the heat exchanger is connected with a heated flue gas inlet (303) of the pyrolysis reactor, and a steam outlet of the heat exchanger is connected with the inorganic matter impurity removal system.

The invention discloses a sprinkling type heat exchange sewage circulation flash steam generation system, and belongs to the technical field of waste heat utilization and sewage treatment. According to the steam generation system, a steam-liquid ejector adopts high-pressure steam to suck non-flash sewage gathered in a flash tank, and the non-flash sewage enters a spraying type heat exchanger to be heated after being pressurized and then is fed into a sprayer to be subjected to flash evaporation at the top of the flash tank; high-temperature sewage in the water distribution tank is heated by pressurized water in the sprinkling heat exchanger, is enriched in a water collecting tank, and is fed into the bottom of a flash tank to realize spewing depressurization flash evaporation; and saturated sewage which is not flashed in the flash tank is communicated with an injection inlet of the vapor-liquid injector through an outlet pipe at the bottom, so that circulating pressurized flash is realized. The steam generation system is driven by a small part of high-pressure steam, does not consume extra pump work, realizes gradient utilization of waste heat of medium-high-temperature sewage in a circulating pressurization mode, and generates continuous and stable medium-low-pressure saturated steam through up-and-down combined flash evaporation in a flash evaporation tank, so that a steam source is provided for seawater desalination, sewage treatment or other steam using processes, and the energy consumption is reduced. Waste heat utilization of sewage is achieved, and energy conservation and emission reduction are achieved.

The invention provides a photovoltaic power station energy storage matching system and an operation method thereof. The system comprises an energy storage section, an energy release section, a solar heat compensation module and a cooling nozzle arranged above a photovoltaic cell. A working medium outlet of the energy storage section is connected with an inlet of the high-pressure gas storage chamber; the working medium outlet of the energy storage section and an outlet of the high-pressure gas storage chamber are connected with a working medium inlet of the energy release section; the energy storage section is provided with two-stage compressors, coolers are arranged at outlets of the compressors, the energy release section is provided with two-stage expansion machines, and preheating heaters and heat supplementing heaters are arranged at inlets of the two-stage expansion machines. A hot medium outlet of the cooler is communicated with the high-temperature water storage tank, a cold medium outlet of the cooler is communicated with the low-temperature water storage tank, the high-temperature water storage tank is connected with the preheating heater, and a heating medium outlet of the preheating heater is communicated with the low-temperature water storage tank; a working medium inlet/outlet of the solar heat compensation module is communicated with a heating medium inlet/outlet of the heat compensation heater; the efficiency of the energy storage system can be obviously improved; solar heat compensation is cleaner, and carbon emission can be effectively reduced.

The invention discloses a multi-source complementary heat supply system for gradient utilization of energy. The multi-source complementary heat supply system comprises a coal-fired steam boiler, a steam turbine, a dead steam waste heat recovery mechanism, a first-stage flue gas waste heat recovery mechanism, a second-stage flue gas waste heat recovery mechanism, a sewage waste heat recovery mechanism, a near-end network circulation mechanism, a far-end first-stage network circulation mechanism, a far-end network second-stage circulation mechanism and a gas-fired boiler. The invention also discloses a multi-source complementary heat supply method for gradient utilization of energy. By the adoption of the multi-source complementary heat supply system for gradient utilization of energy, heat loss in the heat conveying process can be effectively reduced, equipment investment is reduced, and the ideal effect of excellent energy and excellent use is achieved; gradient utilization of energy is realized on the basis of ensuring that the indoor temperature of a heat consumer is appropriate, and pollution to the environment is reduced.

An energy gradient utilization system comprises a heat supply steam pipeline and a two-stage heat supply network heater. A heater partition plate used for dividing the two-stage heat supply network heater into a heater low-pressure stage and a heater high-pressure stage is arranged in the two-stage heat supply network heater, a heater water inlet pipeline connected with the heater low-pressure stage is arranged at one end of the two-stage heat supply network heater, and a heater water outlet pipeline connected with the heater high-pressure stage is arranged at the other end of the two-stage heat supply network heater. An outlet of the heat supply steam pipeline is divided into two paths, one path communicates with the heater high-pressure stage, the other path is connected with an inlet of a small back pressure machine, and an outlet of the small back pressure machine communicates with the heater low-pressure stage. By arranging the small back pressure machine and the two-stage heat supply network heater, heat supply steam and steam exhausted by the small back pressure machine are exhausted to the high-pressure stage and the low-pressure stage of the two-stage heat supply network heater correspondingly, two strands of steam with different pressure grades are exhausted to one heat supply network heater, gradient utilization of energy is achieved through the small back pressure machine, and meanwhile gradient heating of heat supply network water through the heater low-pressure stage and the heater high-pressure stage is achieved.