115results about How to "Realize cascade utilization" patented technology

The multi-component condensation, adsorption and catalytic oxidation device comprises a condensation, adsorption and catalytic oxidation device body, and the condensation, adsorption and catalytic oxidation device body is composed of a catalytic combustion furnace, a catalytic fan, a buffer, a carbon tank, a waste gas fan, a condenser and a heat exchanger which are arranged in a machine shell; a functional mechanism is arranged outside the catalytic combustion furnace, and a cleaning structure for cleaning the filter plate is arranged on the filter cartridge. And a second synchronous structure is arranged between the rotating shaft and the rotating fan. The device has a three-stage condensation link for recovering and treating volatile organic compounds, a knocking plate and a piston pump are respectively driven to work through a second synchronous structure, a diaphragm pump is used for pumping water, and water mist sprayed by a spray head adsorbs impurities in flue gas and precipitates at the bottom of a filter cartridge; the filtered flue gas enters the volatile organic matter equipment to be treated, and the knocking plate can knock the filter plate when moving up and down in a reciprocating manner, so that the filter plate is prevented from being blocked.

The invention discloses a combined heat and power system and method for coupling thermochemical energy storage. According to the technical scheme, the combined heat and power system coupled with thermochemical energy storage comprises a thermochemical energy storage device, a compressed air energy storage device, a waste heat boiler and a steam turbine power generation device. In a low ebb of electricity utilization, heat storage is performed on the thermochemical energy storage device by adopting electric energy, and gas exhausted by the thermochemical storage tank is further stored by adopting a compressed air energy storage device; in the power utilization peak or peak, the compressed air energy storage device is started to release energy, the thermochemical energy storage device is started to release heat to the outside, high-temperature gas exhausted through heat release reaction is supplied to the waste heat boiler, steam generated by the waste heat boiler drives the steam turbine power generation device to generate power, and exhausted steam is used for supplying heat to the outside to achieve cogeneration. Thermochemical energy storage, compressed air energy storage, the waste heat boiler and steam turbine power generation are coupled for application, and the energy utilization efficiency of the thermochemical energy storage system is effectively improved.

The invention relates to the technical field of green fuel preparation, and discloses a method for preparing green fuel by coupling biomass gasification and combustion, which comprises the following steps: (1) separating N2 from air, taking a part of residual gas as a gasification agent, and taking the other part as combustion gas; (2) carrying out chemical chain gasification on the biomass through steam under the condition of a gasifying agent to obtain H2 and CO2; (3) carrying out chemical looping combustion on the biomass under the conditions of an oxygen carrier and combustion gas to obtain CO2; (4) electrolyzing a part of obtained CO2 by using electric energy obtained by biomass chemical looping combustion to obtain CO; (5) synthesizing N2 and H2 to prepare a green NH3 product; and synthesizing H2, CO2 and CO to prepare a green methanol product. According to the method, a biomass fuel chemical looping power generation and biomass chemical looping gasification coupling technology is applied, a carbon source in biomass is fully utilized, meanwhile, green NH3 and methanol products are prepared, and efficient utilization of resources is achieved.

The invention relates to a concentrated solar energy and terrestrial heat coupling long-time energy storage and control system and method. The system comprises a concentrated solar energy collection system, a heat energy conversion and transmission system, a terrestrial heat long-time energy storage system, a heater module and an energy utilization system. The concentrating solar energy collecting system is used for focusing sunlight and converting the focused solar energy into heat energy; the heat energy conversion and transmission system is used for receiving heat energy from the concentrating solar energy collection system and transmitting the heat energy to the geothermal long-time energy storage system or directly used for power generation; according to the geothermal long-time energy storage system, the natural heat storage characteristic of underground deep rocks is utilized, and heat energy is stored by injecting high-temperature hot fluid; the heater module is used for heating an organic working medium by using heat energy stored by high-temperature hot fluid from a hot well through heat exchanger equipment; the energy utilization system is used for achieving the gradient utilization process of energy. The utilization efficiency of concentrated solar energy and the sustainable utilization rate of geothermal energy are improved. And maximum storage and efficient output of energy are realized.

The invention relates to the technical field of fossil energy hydrogen production, and discloses a combined heat and power generation coupled natural gas reforming hydrogen production system and a control method. The combined heat and power generation coupled natural gas reforming hydrogen production system comprises a raw material pretreatment unit, a natural gas conversion unit, a combined heat and power generation unit, a medium and low temperature conversion unit and a gas separation unit, the combined heat and power generation coupling natural gas hydrogen production control method comprises the steps that the heat and power distribution ratio of combined heat and power generation is calculated and compared with the water vapor demand quantity under the steady-state working condition, operation selection is conducted according to the comparison result, the heat and power distribution ratio of combined heat and power generation is calculated, and the final distribution ratio of heat and power is obtained. And stable supply of steam and electric quantity of the combined heat and power generation unit is realized. The gradient utilization of energy is realized, the waste heat utilization diversity is increased, and the heat utilization efficiency of the natural gas hydrogen production process is improved.

According to the heat pump direct expansion type rotating wheel dehumidification system, the control method and the terminal, the direct expansion copious cooling module is additionally arranged behind the front surface air cooler, the rotating wheel dehumidification burden is effectively relieved, energy consumption is reduced, the direct expansion copious cooling module adopts the water cooling condensation technology, and under the condition that the air outlet humidity of an evaporator reaches the standard and the air supply dew point is not changed, the energy consumption is reduced. And energy is further saved by reducing regeneration air volume. Meanwhile, the medium-temperature heat pump module and the high-temperature heat pump module are integrated on the regeneration side, gradient utilization of energy is achieved, and the energy efficiency of the system is greatly improved. In addition, the system is provided with a processing side sensing module and a regeneration side sensing module, temperature and humidity data are collected in real time, accurate regulation and control are conducted according to preset values, and the air supply quality is ensured; the regeneration heat pump module evaporator conducts heat recovery on exhaust air, high-temperature low-humidity air on the regeneration side is efficiently exhausted, and the energy utilization rate is remarkably increased.

The invention discloses a seawater electrolyzed water hydrogen production and energy cascade storage and utilization system which comprises an offshore steel frame platform. A seawater pump, a seawater purification device, a purified water storage tank, a water pump, an alkaline water electrolytic bath, a hydrogen purification and impurity removal device, a hydrogen storage tank, a hydrogen flow controller, a pyrolysis device, a gas purification and impurity removal device, a gaseous carbon dioxide storage tank, a carbon dioxide flow controller and a compressed carbon dioxide energy storage and heat exchange system are arranged on the offshore steel frame platform; the liquid carbon dioxide storage tank is arranged in the seabed below the offshore steel frame platform and connected with the compressed carbon dioxide energy storage and heat exchange system. Offshore wind power, photovoltaic energy and temperature difference energy are utilized for power generation, biomass is adopted for preparing seawater desalination wood and generating carbon dioxide, seawater is electrolyzed into hydrogen, the hydrogen and the carbon dioxide are synthesized and converted into green liquid fuel, and oxygen is used for supplying oxygen to an underwater system.

The invention discloses a safe and efficient deep peak regulation coal-fired power generation system based on fused salt heat storage and an operation method thereof, and the system comprises a traditional coal-fired power generation unit and a fused salt heat storage system coupled with the traditional coal-fired power generation unit. According to the fused salt heat storage system, heat storage is carried out in the mode that fused salt is sequentially heated through exhaust steam of a pressure cylinder in a split-flow turbine and reheated steam, heat release is carried out through a boiler water supply bypass scheme, and the steam split-flow rate in the heat storage process is increased through an SSS clutch. In the heat storage process of the system, under the condition that the lowest stable combustion load of a boiler is guaranteed, part of steam turbine medium-pressure cylinder exhaust steam and reheated steam of the coal-fired power generation unit are distributed to the fused salt heat storage system, and fused salt in a low-temperature fused salt tank is sequentially heated through the two streams of steam; through cooperation of the SSS clutch, exhaust steam of the intermediate pressure cylinder of the steam turbine is completely shunted for heat storage; in the heat release process of the system, under the condition that the coal feeding amount of the boiler is not increased, the molten salt heat storage system is used for heating part of condensed water of the coal-fired power generation unit, and the variable load rate of the coal-fired power generation unit is increased.

The invention provides an auxiliary variable load industrial steam supply system and a control method, and belongs to the technical field of power generation and steam supply. Comprises: a boiler for generating main steam and heating cold resteam into hot resteam; the turboset is used for generating electricity by using the main steam and the hot resteam; the pressure regulating power generation module is used for regulating the pressure of the input main steam and generating power by using the main steam to form industrial steam supply steam; the fused salt heat storage and release module is used for heating the cold fused salt into hot lava by using the hot resteam and heating the industrial steam supply steam output by the first heat exchanger or the heater by using the hot lava; the first heat exchanger is used for heating the industrial steam supply steam output by the pressure regulating power generation module by utilizing the steam output by the fused salt heat storage and release module; the heater is used for heating the industrial steam supply steam output by the voltage regulation power generation module; and the heat user is used for utilizing the industrial steam supply steam. The structure is simple, and the flexibility and the energy utilization rate of the combined heat and power generation unit can be improved.

The invention relates to the technical field of plasma electric flame stoves, in particular to a system for supplying nitrogen through centralized air separation for an electric flame stove and a working method. The system comprises an air compression and pretreatment unit, a pressure swing adsorption separation unit, a nitrogen buffer pressure stabilization unit, a nitrogen distribution conveying pipe network, a user side regulation and control unit and at least one electric flame stove which are sequentially connected in the gas flow direction. According to the invention, through centralized nitrogen generation and pipeline distribution, the problem of large-flow nitrogen supply of dispersed users is solved, and the emission of nitrogen oxides is greatly reduced due to the use of oxygen-free nitrogen by the electric flame stove. According to the system, indoor oxygen supplementation of oxygen-enriched gas and domestic hot water recovery of compressed waste heat are achieved at the same time, and the comprehensive utilization efficiency of resources is improved; by adopting the carbon steel pipe net, the construction cost is reduced, and nitrogen with different purities can be flexibly produced to meet multiple requirements; and real-time matching of nitrogen supply and stove power is realized through intelligent flow control of a user side, and stable and efficient operation is guaranteed.

A steam powder tail gas waste heat recovery refrigeration coupling DTB crystallization system comprises steam powder process equipment for conducting steam flow crushing on titanium dioxide materials through steam, crystallization process equipment for crystallizing titanium liquid and a refrigerating unit. The refrigerating unit is externally connected with a cooling circulation mechanism, and a generator, an absorber, a condenser and an evaporator are arranged in the refrigerating unit. And the absorber, the condenser and the cooling circulation mechanism are circularly connected to form a second circulation. And a second cooling medium is filled in the second circulation. The steam powder process equipment comprises a steam flow crusher and a steam powder tail gas spray tower, and the steam powder tail gas spray tower is circularly connected with the generator to form a first cycle. And a third cycle is arranged in the crystallization process equipment, and a third cooling medium is filled in the third cycle. According to the utility model, the refrigerating unit is matched with the three-stage DTB crystallization process, so that the efficient utilization of energy is realized, and the retention time and the crystal growth time in the crystallization process are effectively controlled.

The present invention discloses a flue gas spray cooling and water collecting system, wherein a cold water pool is located below a cooling tower, an outlet of the cold water pool is connected with a cooling water spray pipe, and the cooling water spray pipe is located at the upper part of a rear-stage ridge demister; the flue gas cooling water collecting trough is arranged on the side or bottom surface of a supporting beam of the rear-stage ridge demister, or is arranged at the lower part of the lowest point of the rear-stage ridge demister; one end of a drain pipe of the flue gas cooling water collecting trough is connected with the flue gas cooling water collecting trough, and the other end of the drain pipe of the flue gas cooling water collecting trough is inserted below the liquid level of a clarified water tank; an overflow clear water outlet at the upper part of the clarified water tank is connected with the cold water pool, and a bottom outlet of the clarified water tank is connected with an inlet of a demister flushing water pump, an outlet of the demister flushing water pump is connected with a demister spray flushing pipe, and the demister spray flushing pipe is located at the upper and lower sides of a front-stage demister, and the system can meet the full cascade utilization of demister flushing water.

The invention discloses an alcohol-containing chemical tank field VOC tail gas three-stage condensation system, and relates to the technical field of oil gas treatment, the alcohol-containing chemical tank field VOC tail gas three-stage condensation system specifically comprises a precooler, the precooler is used for conducting heat exchange on VOC tail gas entering the system and purified VOC tail gas coming out of the system, the VOC tail gas entering the system is precooled to 15-20 DEG C, and the cooling capacity is recycled; the first-stage shallow condenser is arranged on one side of the precooler and is used for cooling the VOC tail gas to 2-4 DEG C, so that most water vapor and part of components in the VOC tail gas are condensed; the second-stage middle condenser is arranged on one side of the first-stage shallow condenser and is used for cooling the VOC tail gas to-20 DEG C to-28 DEG C, so that most of residual water vapor and most of VOC components in the VOC tail gas are condensed; by means of the three-stage condensation system, gradient utilization of cooling capacity is achieved, and the good energy-saving effect is achieved.

The utility model discloses a cooling water waste heat recycling process system based on cooling water tank, it includes the crusher, cleaning and stirring water pool, hoist, vertical double heat source rotary dryer, extruder and cooling water tank that connects gradually, the cooling water in cooling water tank is connected with the central heat pipe of vertical double heat source rotary dryer through first recovery water pipeline, is provided with the water supply pipeline on cooling water tank, and the water outlet of central heat pipe is connected with cleaning and stirring water pool through second recovery pipeline, the utility model discloses simple structure, introduces the cooling water in cooling water tank to the central heat pipe of vertical double heat source rotary dryer, forms central heat source, improves the internal temperature of dryer, and forms the inside and outside double -deck heat source with electric heating ring cavity, effectively improves the drying efficiency of dryer, and simultaneously circulates the cooling water after cooling to cleaning and stirring water pool and reuses, realizes the step utilization of heat energy and water resource circulation.

The utility model relates to an esterification separation tower including the upper tower body of lower tower body connection, through the coaxial setting inside, middle, outer three layer coil pipe components in the lower tower body, the lower tower body bottom end is equipped with the heat medium inlet pipe, and the inlet of inside coil pipe, middle coil pipe and outer coil pipe is linked with the heat medium inlet pipe, and the lower tower body top end side is equipped with the heat medium outlet pipe, and the outlet of inside coil pipe, middle coil pipe and outer coil pipe is linked with the heat medium outlet pipe, has built three -dimensional heating system, and three layer coil pipe passes through covering the center of lower tower body, the intermediate of lower tower body and inner wall and the edge area of inner wall, has formed the uniform stable temperature field, has eliminated the problem that the material coking phenomenon and the reaction of low temperature area are not sufficient caused by local overheating significantly, has promoted the heat transfer efficiency and energy utilization ratio, has guaranteed the stability and fullness of esterification reaction and separation process simultaneously, has improved the efficiency of separation.

The invention relates to the technical field of chemical industry park energy supply, and discloses a chemical industry park production centralized energy supply optimization system. The system comprises an energy conversion station, an energy supply pipeline, an intelligent energy management station, a central control room and a signal instruction transmission line. A combined heat and power generation device and a waste heat recovery device are arranged in the energy conversion station; the energy supply pipeline is of a double-layer structure, the inner layer is corrosion-resistant alloy, the outer layer is high-strength alloy steel, and a buffer heat insulation layer is arranged in the middle. A pressure transmitter, a cut-off valve and an emergency emptying valve are arranged on the pipeline and are connected with a central control room through a signal line; an energy sensor is arranged on the production device and is connected with the intelligent energy management station; and a regulating valve and a flow meter are also arranged on the pipeline. The double-layer pipeline structure is combined with a real-time pressure monitoring and emergency processing mechanism, so that the energy supply safety is remarkably improved; through combined heat and power generation, waste heat recovery and intelligent energy distribution, the comprehensive utilization rate of energy is increased to 78%-82%; and the production stability is guaranteed through accurate regulation and control, and the defective rate of products is effectively reduced.

The invention discloses a highway self-consistent energy system based on ammonia energy storage and an operation method of the highway self-consistent energy system, and belongs to the technical field of comprehensive energy systems. The system comprises an energy supply part, an electricity-hydrogen conversion unit, an ammonia energy storage unit, a multi-energy flow load part and a cascade energy utilization unit, the cascade energy utilization unit comprises a solid oxide fuel cell module, a micro gas turbine, a waste heat boiler and a heat storage tank; the solid oxide fuel cell module uses ammonia in an ammonia storage tank for first-stage power generation; high-temperature waste gas is guided into the micro gas turbine for second-stage power generation; medium and low temperature waste heat discharged by the micro gas turbine is captured by the waste heat boiler and stored in the heat storage tank; and heat energy in the heat storage tank is used for cold-state start preheating of the ammonia synthesis module in the ammonia energy storage unit by a start preheating loop. According to the system, energy gradient utilization of first-stage power generation, second-stage power generation and third-stage heat supply is achieved, the multi-energy flow load requirements of electricity, heat and hydrogen can be met at the same time, and the total energy efficiency, the self-consistent rate and the green low-carbon level of the system are greatly improved.

The present invention discloses an energy storage geothermal heating system for absorbing intermittent energy, including a heat storage device, a peak-shaving plate heat exchanger, a heating plate heat exchanger, a heat-releasing plate heat exchanger, a geothermal water circulation pump, a heating hot water circulation pump and a heat-releasing circulation pump; the heat storage device converts intermittent energy into thermal energy and stores it in its thermal storage material; in the heating season, the heat in the thermal storage material is released into the heating hot water network through the heat-releasing circulation pump and the peak-shaving plate heat exchanger to provide peak-shaving thermal energy for the building; in the non-heating season, the heat in the thermal storage material is released into the geothermal water and stored in the geothermal storage through the heat-releasing circulation pump and the heat-releasing plate heat exchanger. The present invention solves the "source-load" coupling problem between intermittent energy and the building heating system, such as the storage of unstable intermittent energy across seasons, matching with the stable heat source demand for building heating, cascade utilization of heating, peak-shaving of the heating network, and is suitable for various building heating systems with certain geothermal water resources.

The invention relates to the technical field of battery disassembly and recovery, and provides a continuous high-efficiency energy-saving power battery crushing and recovery integrated process, integrated equipment is adopted, and the integrated equipment sequentially comprises a nitrogen generation module, a crushing module, a drying module, an integrated cooling module and a tail gas treatment module, and the energy consumption is further reduced while the safety is ensured.

The invention discloses a solar-driven energy storage-hydrogen production system and an operation method thereof.The system selects CaO / CaCO3 as an energy storage medium of a thermochemical energy storage system, and storage and release of solar energy are achieved through the reversible reaction of CaCO3 and CaO; the heat required by the methane steam reforming reaction is provided by a thermochemical energy storage system, and meanwhile, the heat of a hydrogen production product is recycled by a supercritical carbon dioxide Brayton cycle. According to the system, in the heat storage stage, CaCO3 is calcined and decomposed into CaO and CO2 through a solar calcination reactor, CaO is stored at high temperature, and CO2 supplies heat to methane steam reforming reaction. In the heat release stage, CaO and CO2 react to release heat, and the heat is absorbed by excessive CO2 to supply heat to the methane steam reforming reaction. The temperature of a methane steam reforming product is high, and the methane steam reforming product is used for heating supercritical carbon dioxide to expand and do work. When solar energy is sufficient, the energy storage process and the energy release process work simultaneously, when solar energy is insufficient, only the energy release process works, and continuous and stable operation of the system is guaranteed.

The present invention discloses a natural gas power generation system and method combined with liquefied air energy storage, wherein the natural gas power generation system includes an air liquefaction subsystem, a liquefied air gasification subsystem, an LNG gasification subsystem, a gas turbine subsystem, a waste heat utilization subsystem and a carbon dioxide capture subsystem; the air liquefaction subsystem produces liquefied air; the liquefied air gasification subsystem uses liquefied air to generate electricity; the LNG gasification subsystem uses LNG cold energy for the air liquefaction subsystem and the carbon dioxide capture subsystem to gasify LNG into natural gas; the gas turbine subsystem uses part of the natural gas of the LNG gasification subsystem as fuel for power generation; the waste heat utilization subsystem uses the waste heat of flue gas for power generation; the carbon dioxide capture subsystem is coupled with the LNG gasification subsystem to condense and capture carbon dioxide in the flue gas. The present invention can solve the defects of large energy loss and low efficiency in the prior art and reduce greenhouse gas emissions.

This invention belongs to the field of industrial solid waste resource utilization and inorganic material preparation technology, specifically relating to a coupled method and system for preparing jade core stone from gypsum waste residue and producing sulfuric acid as a byproduct. The coupled method includes: drying the gypsum waste residue in a first drying device to obtain semi-dry gypsum waste residue, then drying the semi-dry gypsum waste residue in a second drying device to obtain anhydrous gypsum raw material; mixing and grinding the anhydrous gypsum with pre-set auxiliary materials, and then processing it through a melting furnace roasting device, a calendering device, and a segmented crystallization annealing device to prepare jade core stone products, wherein the waste heat from the melting furnace roasting device, the calendering device, and the segmented crystallization annealing device is all returned to the second drying device; during the calcination of the anhydrous gypsum mixed and ground with pre-set auxiliary materials in the melting furnace roasting device, the sulfur-containing flue gas generated during the calcination process is collected and sequentially treated through a waste heat recovery device, a purification drying device, and a two-transfer two-absorption device to obtain industrial-grade sulfuric acid.

The present invention discloses a combined cooling, heating and power system and a working method thereof, belonging to the field of energy utilization technology. The system comprises an S-CO2 heater, an S-CO2 expander, a first generator, a first regenerator, a heat exchanger, a first Kalina generator, a compressor, an electric motor, a second Kalina generator, a precooler, a gas-liquid separator, a Kalina expander, a second generator, a mixer, a condenser, a second regenerator, a first throttle valve, an ejector, a second throttle valve and an evaporator. The heat transfer medium heated by solar energy first drives the S-CO2 power generation and heating module, and then uses the remaining heat to drive the Kalina power generation and refrigeration module, which can realize the cascade utilization of thermal energy and improve the energy utilization efficiency; and can meet the summer cooling and winter heating needs while generating electricity; at the same time, the system is simple and flexible, and can meet the needs of different users.

The utility model relates to the technical field of resource conversion and utilization, in particular to a biomass solid waste pyrolysis and carbonization system which comprises a crushing device, a drying device and a pyrolysis device which are sequentially connected, and the pyrolysis device is provided with a pyrolysis carbon discharge port and a pyrolysis oil gas discharge port. The pyrolytic carbon discharging port is communicated with a pyrolytic carbon cooling device used for cooling pyrolytic carbon, the pyrolytic oil gas discharging port and the pyrolytic carbon cooling device are both communicated with a combustion device through pipelines, and the combustion device takes pyrolytic oil gas and biochar as fuel; a gas outlet of the combustion device is sequentially communicated to the pyrolysis device, the drying device and the waste heat recovery device; the waste heat recovery device is further provided with a combustion-supporting air inlet and a combustion-supporting air outlet, and the combustion-supporting air outlet is communicated with the air inlet of the combustion device and used for heating combustion-supporting air of the combustion device. A clean and efficient energy conversion mode with self-sufficient energy can be provided for a large amount of biomass waste, and fuel upgrading of the biomass waste is achieved with low energy consumption.

The invention provides a light coal complementary methane preparation system with near-zero carbon emission. The light coal complementary methane preparation system with near-zero carbon emission comprises a coal gasification assembly, a hydrogen production assembly and a methanation assembly. The coal gasification assembly is suitable for gasifying raw coal to generate carbon monoxide. The hydrogen production assembly is suitable for electrolyzing condensate water generated in the raw coal gasification process to generate hydrogen. The methanation assembly is suitable for enabling hydrogen generated by the hydrogen production unit and carbon monoxide generated by the coal gasification assembly to be subjected to methanation reaction to obtain methane, energy consumption and the use amount of water resources can be reduced, meanwhile, the influence on the environment is reduced, and clean, efficient and sustainable development of coal energy conversion is achieved.

The invention discloses a solar seawater desalination-power generation integrated device integrated with thermoelectric modules, which belongs to the technical field of solar heat utilization and comprises a distillation box, the rear wall of the distillation box is higher than the front wall of the distillation box, a glass cover plate is mounted at the top end of the distillation box, and a plurality of thermoelectric modules are laid on the outer side of the rear wall of the distillation box. Heat dissipation fins are laid at one end, far away from the distillation box, of the thermoelectric module, the heat dissipation fins are in threaded connection with the rear wall of the distillation box through screws, a partition plate is arranged at one end, close to the front wall, in the distillation box and divides the distillation box into a seawater tank and a fresh water tank, and a flow guide groove is formed in the inner side of the rear wall of the distillation box. According to the invention, condensation latent heat of water vapor is fully utilized for power generation, so that the yield of fresh water is improved, electric energy is obtained, gradient utilization of solar energy is realized, and the comprehensive utilization rate of solar energy is improved.

The invention belongs to the cross technical field of deep well mine filling and energy recovery, and particularly relates to a deep well filling pressure reduction and graded pressure energy recovery power generation system, an energy efficiency monitoring method and an operation control method. Comprising an earth surface filling preparation station, a filling vertical pipe, a decompression chamber, a first-stage coupling rotational flow driving device, a second-stage coupling rotational flow driving device, a pressure stabilizing buffer tank and a tail end filling working face. The earth surface filling preparation station conveys slurry into the pressure reduction chamber through the filling vertical pipe, the slurry is conveyed to the first-stage coupling rotational flow driving device through pressure reduction in the pressure reduction chamber, and the first-stage coupling rotational flow driving device drives the first-stage permanent magnet generator to generate electricity. The slurry is conveyed to a secondary coupling rotational flow driving device through a transition pipe after coming out of the primary coupling rotational flow driving device, and the secondary coupling rotational flow driving device drives a secondary permanent magnet generator to generate electricity; the slurry flows out of the secondary coupling rotational flow device and then enters the pressure stabilizing buffer tank, and then is conveyed to a tail end filling working face through the pressure stabilizing buffer tank.

The application discloses a waste heat recovery device for sludge pyrolysis, and relates to the technical field of sludge treatment equipment. The waste heat recovery device for sludge pyrolysis comprises, which are sequentially connected in cooperation, a pyrolysis furnace, a preheating furnace, a cooling furnace, a cyclone dust collector, a conveying motor and connecting bolts. The pyrolysis furnace is internally provided with a pyrolysis tube cavity, a ventilation bin and a combustion bin. The preheating furnace is internally provided with heat absorption fins and baffles for heat exchange intensification. The cooling furnace is internally provided with two groups of independent heat dissipation channels formed by double spiral plates. The cyclone dust collector realizes flue gas dust removal and purification. The flue gas and water vapor generated by pyrolysis are preheated after dust removal. Non-condensable gas is recycled as combustion supplementary fuel. Residual heat of sludge residue is used to heat air for combustion oxygen supply and sludge drying. Condensed water vapor is collected and treated through a condensate tank. The device realizes waste heat cascade recycling, has compact and stable structure, high heat exchange efficiency, can significantly reduce energy consumption and reduce secondary pollution, and is suitable for sludge pyrolysis treatment scenes.

The invention relates to the technical field of methanol recovery, and discloses a wastewater methanol recovery device which comprises a wastewater tank, a heating tank, a liquid collection tank, a liquid guide pipe, a gas guide pipe and a condensation pipe, the liquid guide pipe communicates with the wastewater tank and the heating tank; the condensation pipe is provided with a condensation section positioned in the gas guide pipe; the air guide pipe is communicated between the heating box and the liquid collecting box, the liquid box is opposite and communicated, and condensate water circularly flows in the condensation pipe; the heating box comprises an outer housing, a pool body and an isolation plate; the outer housing covers the tank body, and the liquid guide pipe and the gas guide pipe both extend into the outer housing and are communicated with the tank body; the partition plates are arranged in the pool body and divide the pool body into a plurality of heating areas and a water outlet area, and a water outlet pipe is communicated in the water outlet area; a heating piece is arranged in the isolation plate, and a transferring device is arranged in the pool body, so that wastewater in the heating area is transferred to the adjacent heating area, and wastewater in the heating area close to the water outlet area is transferred to the water outlet area. The method can improve the recovery rate of methanol in the wastewater.

The invention discloses a biogas slurry multi-stage thermal cracking system and a waste heat recovery method. The system comprises a feeding pump, a waste heat exchange device, a first-stage thermal cracking device, an interstage reheating device, a second-stage thermal cracking device and a tail gas spraying device which are sequentially connected through pipelines, the method comprises the following steps: pressurizing biogas slurry and then preheating the biogas slurry through a waste heat exchange device; carrying out low-temperature hydrolysis at 110-150 DEG C in a primary thermal cracking device to generate amino acid and reducing sugar and reduce the viscosity; rapidly heating to 160 DEG C to 180 DEG C through an interstage reheating device; the mixture enters a secondary thermal cracking device to be subjected to a high-temperature humification reaction, and a humic acid-like substance is generated; after reaction, high-temperature slurry returns to the waste heat exchange device to release heat, and a finished product is discharged after cooling. Through graded temperature control and countercurrent flow heat exchange, the content of humic acid in the product is increased, the problem of scaling of the heater is solved, the waste heat of the system is recycled to the maximum extent, and the method is suitable for resourceful treatment of the biogas slurry.