46results about How to "Realize cascade utilization" patented technology

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.

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 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 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.

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 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 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.

The invention relates to the technical field of zero-carbon parks, in particular to a comprehensive energy system for a zero-carbon park, which comprises an energy production module, a multi-energy conversion and storage module, an intelligent management and control module, a user load module and a carbon capture and utilization unit. Multi-energy complementation and long-time energy storage can be achieved, reliable supply of zero-carbon energy is guaranteed, the overall efficiency and the energy utilization rate of the system are improved, resource cyclic utilization, multi-time scale optimization and multi-element load interaction are achieved, optimal economic dispatching and hydrogen energy multi-element utilization are achieved, and multiple guarantees and operation toughness are provided; the data uplink gateway ensures that source data is real and cannot be tampered, meanwhile, short-term temperature fluctuation caused by renewable energy source fluctuation or load change of a heat supply network can be effectively restrained, continuous and stable heating / cooling service is provided for users, and the energy consumption quality and comfort of a park are remarkably improved.

This application discloses a zero-carbon emission cement production device and method based on hydrogen energy utilization. The production device includes: a hydrogen production system, a fuel cell system, a waste heat recovery system, a cement clinker calcination decomposition furnace system, a cement clinker calcination rotary kiln system, a grinding system, and a methanol synthesis system. This application uses hydrogen to partially replace the kiln fuel, which can achieve carbon emission reduction with minimal changes to the existing cement production line technology and at a relatively low modification cost. Addressing the high energy consumption and high carbon emissions in the cement industry, this application optimizes the material and energy flow throughout the entire cement production process, achieving the recycling of materials and the cascade utilization of energy, ensuring the low-carbon and environmentally friendly nature of the entire production method.

The invention provides a synthetic microbial community and application thereof in degradation of trehalose and biofuel cells, and belongs to the technical field of synthetic microbiology and biological energy. A synthetic microbial community is constructed by means of synthetic biology, the synthetic microbial community comprises genetic engineering escherichia coli and shewanella, and the synthetic microbial community can realize a complete metabolic pathway from trehalose to acetic acid and an efficient electron transport chain; the method can be used for treating trehalose-rich wastewater or wastes and the like; the synthetic microbial community can be used for a microbial fuel cell, can stably generate current density and power density which are higher than those of a single strain or a natural mixed flora in the microbial fuel cell, and has good practicability.

The invention belongs to the field of heat supply, and discloses a heat supply system and a control method thereof.The heat supply system comprises a secondary reheating unit, a steam distribution unit, an auxiliary machine driving unit and a heat energy comprehensive utilization unit; an ultrahigh-pressure cylinder of the secondary reheating unit is connected with the primary reheating system, an outlet of the primary reheating system is connected with a high-pressure cylinder steam inlet pipeline and a steam utilization pipeline in parallel, a steam auxiliary pipeline is arranged on the steam utilization pipeline, and part of primary reheating steam is divided by controlling the opening degree of the steam auxiliary pipeline so as to achieve unit power adjustment. The steam distribution unit comprises a steam header communicated with the steam auxiliary road; the auxiliary machine driving unit comprises a water feeding pump turbine driven by steam and a steam-driven induced draft fan subsystem, the steam-driven induced draft fan subsystem comprises a small turbine, and the steam distribution unit is configured to provide driving steam for the water feeding pump turbine and the small turbine; the heat energy comprehensive utilization unit comprises a heat supply component connected with the steam distribution unit.

The invention discloses a spraying, washing and drying integrated bottle washing method and system based on waste heat utilization, and belongs to the technical field of laboratory ware cleaning. According to the method, pre-washing, main washing, neutralizing, rinsing and drying are sequentially carried out on an experimental vessel, rinsing high-temperature waste water and drying high-temperature waste gas are used as waste heat sources and are subjected to reverse heat exchange with pre-washing / main washing tap water and rinsing purified water respectively, and waste water to be discharged is subjected to final heat exchange through a plate heat exchanger and then is discharged at low temperature; and the temperature of the preheated water is dynamically compensated to the working procedure temperature by the PTC electric heating element, and automatic switching of three water ways is realized in cooperation with the single pump and the electromagnetic three-way valve. The device realizes gradient utilization of heat, obviously reduces heating energy consumption, simplifies a waterway structure, improves cleaning and drying stability, has the advantages of energy conservation, high efficiency, reliable operation, simple maintenance, environmental protection and the like, and is suitable for cleaning and drying integrated operation of various laboratory lab utensils.

The utility model belongs to the technical field of separation devices, and particularly relates to a dioctyl terephthalate distillation system which comprises a distillation tower, a plurality of tower plates arranged in the distillation tower, a heat exchanger connected to the bottom of the distillation tower, a product storage tank connected to the top of the distillation tower and a stirring assembly arranged in the distillation tower, the stirring assembly comprises a stirring paddle and a spiral stirrer, the stirring paddle is located at the bottom of the distillation tower, a plurality of corrugated plates and a plurality of flow guide covers are arranged in the distillation tower, the corrugated plates are located above the flow guide covers, and the flow guide covers are located above the stirring paddle. According to the utility model, the space in the distillation tower is divided into three parts according to functions, and each section adopts a proper internal component, so that the optimization of the distillation effect is realized.

This invention discloses a smart ecosystem for desert soil degradation that synergizes photovoltaic desertification control with the resource utilization of concentrated brine in agriculture. In this invention, industrial solid waste is transformed into multifunctional ecological restoration materials, constructing a stable aggregate structure for desertified soil. Simultaneously, the scientific configuration of salt-tolerant vegetation rapidly establishes a vegetation community adapted to the local environment, effectively curbing wind and sand erosion. The shading effect of the photovoltaic array not only reduces surface water evaporation but also creates a suitable microclimate for vegetation growth, gradually forming a virtuous cycle of soil-vegetation-microorganisms. This fundamentally reverses the desertification process, improves the regional ecological environment, and achieves efficient recycling of various resources through the construction of a complete closed-loop synergistic system. Furthermore, the stable electricity provided by the photovoltaic system not only meets its own operational needs but also drives seawater desalination and concentrated brine separation treatment, transforming concentrated brine into valuable resources for vegetation irrigation and soil improvement, avoiding resource waste and secondary pollution.

The invention discloses a PEM electrolytic cell-based green electricity hydrogen and oxygen production and air separation coupling system, which comprises a PEM electrolytic cell, an oxygen outlet of the PEM electrolytic cell is directly connected to an air inlet of an air separation device through a pipeline; the intelligent pressure control system can dynamically adjust the operation pressure of the PEM electrolytic bath and the air inlet pressure of the air separation device in real time, so that the pressure matching precision of the PEM electrolytic bath and the air inlet pressure is controlled within the range of + / -0.05 MPa; the heat exchanger is arranged between the PEM electrolytic cell and the air separation device and used for preheating inlet air of the air separation device through waste heat generated by the PEM electrolytic cell. Through system-level coupling, dynamic pressure matching, double-effect heat recovery and multi-parameter collaborative optimization, efficient integration of the PEM electrolytic cell and the air separation system is achieved, the system performance is remarkably improved, and the industrial defects of low oxygen utilization rate, high compression energy consumption and low heat efficiency in a traditional process are overcome.

The utility model discloses multi -cavity heat -accumulating heating heating device, including bearing frame, the first water tank of fixed connection in bearing frame upper end, the first fixed cylinder of fixed connection in the upper portion of first water tank lateral wall and the heat dissipation coil pipe of fixed connection in first fixed cylinder lateral wall, the lateral wall of first water tank is fixed with the water replenishing tank. The utility model discloses through the nesting structure and the communication groove design of heat storage cavity and water storage cavity, solved the problem that traditional boiler heat energy is easy to lose: the heat storage cavity (can fill liquid heat storage medium) formed between first inner jar and second inner jar, through the communication groove of second fixed cylinder lateral wall can realize the free flow of heat storage medium, and the water storage cavity formed between first inner jar and first water tank is set outside heat storage cavity, and the water body in water storage cavity is heated conveniently, when the high temperature medium in heat storage cavity passes through the communication groove, heat is transferred to water storage cavity through the wall surface of second inner jar, first inner jar first, and then is delivered to heat dissipation coil pipe from hot water pipe, reduces the loss of heat directly to the outside environment.

The metallurgical slag heat exchange module comprises a plurality of boiler pipes which are arranged in parallel at intervals; the welding plate is connected with the plurality of linearly arranged boiler tubes to form a plurality of membrane tube rows; the connecting plate is connected with two adjacent membrane tube rows to define a rectangular box structure, a closed or semi-closed heat exchange space is arranged in the center in the rectangular box structure, one end of the heat exchange space is a feed port, the other end of the heat exchange space is a discharge port, and the heat exchange space is arranged from top to bottom, so that metallurgical slag descends under the action of gravity; a communicating pipe is arranged between every two adjacent boiler pipes to communicate the boiler pipes. Metallurgical slag is naturally turned over in the descending process due to the arrangement of the membrane type tube rows, an extra power system is not needed, energy consumption is reduced, and material turning uniformity and efficiency are improved. The boiler pipe serves as a main heat exchange component, cooling water circulates through the communicating pipe, high-temperature metallurgical slag is in contact with the outer wall of the boiler pipe for heat transfer when descending, and efficient heat exchange is achieved. The heat exchange area is increased through the design of the membrane type tube bundle, the heat exchange efficiency is improved, and water resource consumption is reduced by adopting a cooling water recycling mode.

The invention discloses a waste gas combustion furnace for semiconductor production, which belongs to the technical field of semiconductor waste gas treatment, and comprises a furnace body, a combustion chamber arranged in a cavity of the furnace body, and a combustion chamber arranged in the cavity of the furnace body, the combustion engine is arranged in the combustion chamber and used for providing heat for the combustion chamber; the heat exchanger is arranged in the cavity of the furnace body, and the heat exchanger is provided with a cold side channel and a hot side channel; the waste gas inlet is formed in the furnace body and communicated with a cold side channel inlet of the heat exchanger; the waste gas outlet is formed in the furnace body and is communicated with a hot side channel outlet of the heat exchanger; a cold side channel outlet of the heat exchanger communicates with the air inlet side of the combustion chamber, and a hot side channel inlet of the heat exchanger communicates with the air outlet side of the combustion chamber. The waste heat utilization rate of the waste gas combustion furnace is increased, and the fuel consumption and the operation cost are reduced.

The utility model provides a kind of based on the energy-saving system of circulating water multi-mode regulation and control, comprising: circulating water supply main pipe;Circulating water return main pipe;Base load pump group, the outlet of base load pump group is connected to circulating water supply main pipe, and base load pump group includes centrifugal pump, back pressure turbine for driving centrifugal pump and gear box being arranged between centrifugal pump and back pressure turbine;Peak shaving pump group, peak shaving pump group is arranged in parallel with base load pump group, and the outlet of peak shaving pump group is connected to circulating water supply main pipe, and peak shaving pump group includes motor-driven pump, motor for driving motor-driven pump and frequency conversion speed regulating unit electrically connected with motor;Multi-mode regulation and control unit, the output end of multi-mode regulation and control unit is electrically connected with back pressure turbine and frequency conversion speed regulating unit respectively.The utility model solves the problem of energy waste in the full operating condition range caused by excessive design margin in the prior art circulating water system.

The present application relates to a kind of integrated heat pump's combined heat and power system's operating method, combined heat and power system includes steam turbine system and heat network water heating system;Steam turbine system includes medium-pressure cylinder, low-pressure cylinder, generator and condenser;Heat network water heating system includes electric heat pump's no.1 condenser, absorber, absorption heat pump's no.2 condenser and peak heater.Heat network backwater is cooled after passing through no.2 evaporator, then in turn through electric heat pump, absorption heat pump and peak heater for cascade heating.In addition, by adjusting the opening of no.4 shunt valve, the participation degree of absorption heat pump can be controlled: when the outlet heat network water of no.1 condenser all directly flows to mixing valve, absorption heat pump does not run;When part or all heat network water enters absorber, absorption heat pump is put into operation.The present application can expand the operation adjustment range of unit, improve the energy utilization efficiency and heating flexibility of combined heat and power system under variable working condition.

The invention discloses a thermal-electric-chemical coupled solid oxide stack which comprises a lower end plate and an upper end plate, and a plurality of SOFC (solid oxide fuel cell) single cells and SOEC (solid oxide electric cell) single cells are arranged between the lower end plate and the upper end plate; each SOFC single battery comprises an SOFC cathode, an SOFC electrolyte and an SOFC anode which are crimped in sequence; each SOEC single battery comprises an SOEC cathode, an SOEC electrolyte and an SOEC anode which are crimped in sequence; the chamber where the SOEC anode is located is communicated with the chamber where the SOFC cathode is located, and oxygen generated by electrolysis of the SOEC anode can enter the SOFC cathode side to participate in the reaction; and the SOFC single batteries and the SOEC single batteries are electrically connected in series through connectors or current collectors. According to the invention, the SOFC units and the SOEC units are arranged in the same electric pile alternately or in blocks, and specific gas paths and circuits are opened, so that gradient utilization of energy and efficient and stable operation of the system are realized.

This invention discloses a dual-source heat storage system (electric heat and steam heat) for power plant peak shaving and its operation method. The system includes a steam source heat storage unit, a gas source heat storage unit, and a heat energy utilization unit. The steam source heat storage unit includes a high-pressure cylinder of a steam turbine, a steam source heat storage tank, and a working fluid recovery unit. The gas source heat storage unit includes a generator set, a heat source gas supply system, a gas source heat storage tank, and a preheater. The heat energy utilization unit includes a deoxygenated water supply system, which is connected to the steam source heat storage tank via a second valve and to the gas source heat storage tank via a third valve. The outlets of both the steam source heat storage tank and the gas source heat storage tank are connected to the preheater, and the outlet of the working fluid recovery unit is also connected to the preheater. The second and third valves are independently configured. This invention achieves safe recovery of the working fluid, cascade utilization of waste heat, and flexible switching between multiple operating modes, effectively improving the power plant's peak shaving capacity and system integration.

The invention discloses a thermal management system and a control method with the thermal management system. Sharing and recycling of cold and hot resources are achieved through integrated flow path design. The system comprises a motor heat management loop, a battery heat management loop, a refrigerant refrigeration main path and a cockpit air conditioning module. The refrigerant refrigeration main path is switched through a valve, and selectively and actively refrigerates a motor rotor, a battery pack or a cockpit, so that multiple purposes of one source are realized; the motor heat management loop is controlled through a valve and can be selectively coupled with the battery heat management loop or the cockpit heating heat exchanger, and motor waste heat is used for battery heat preservation or cockpit heating. According to the invention, the technical problems of discrete redundancy and low energy utilization rate of the existing thermal management system are solved, and the light weight of the system and the efficient gradient utilization of energy are realized while the precise temperature control of each part is ensured.

The invention relates to the technical field of solid waste resourceful treatment, and discloses a wastewater sludge carbonization molding composite fuel and a preparation method thereof, the wastewater sludge carbonization molding composite fuel is prepared from municipal dewatered sludge, biomass powder, an iron-containing acidic waste liquid, waste oil and a calcium-based exothermic agent, a dual support structure formed by an acid etching biomass carbonization framework and an in-situ generated inorganic crystal is arranged in the acid etching biomass carbonization framework. The preparation method of the wastewater sludge carbonization molding composite fuel comprises the steps of sludge and biomass premixing and grinding, acid etching and carbonization, grease coating, exothermic curing and high-pressure filter pressing molding. Wherein a heat energy cascade backflow process is adopted, and high-temperature slurry generated in the heat release curing stage is used for backflow to provide a heat source for the acid etching carbonization stage. Through chemical reaction heat and in-situ skeleton construction, deep dehydration without an external heat source is realized, the mechanical strength, hydrophobic property and calorific value stability of the fuel are improved, and the operation energy consumption is reduced.

The application relates to the technical field of rectification separation and energy saving, in particular to an energy-saving pyridine coupling 2,2'-bipyridine rectification separation system and method. The rectification separation system provided by the application comprises a pre-fractionating tower system, a bipyridine light-removing tower, a bipyridine product tower, a piperidine-removing tower and a pyridine-removing tower system; the pre-fractionating tower system comprises a No.1 pre-fractionating tower, a No.2 pre-fractionating tower and a No.3 pre-fractionating tower; the pyridine-removing tower system comprises a No.1 pyridine-removing tower and a No.2 pyridine-removing tower; the top of the No.1 pre-fractionating tower is connected with the piperidine-removing tower and the pyridine-removing tower system through pipelines in sequence; the No.2 pre-fractionating tower is provided with a closed heat pump system; and the top of the No.3 pre-fractionating tower is connected with the pyridine-removing tower system through a pipeline. The separation method provided by the application is innovatively combined with differential pressure type heat coupling, heat pump rectification and double-effect rectification and other energy-saving technologies through unique material arrangement and rectification sequence comprehensive optimization, so that 2,2'-bipyridine products can be separated efficiently and with low energy consumption.

The invention discloses a heat-dominated island integrated energy system based on multi-energy complementation and an operation method of the heat-dominated island integrated energy system, and belongs to the technical field of integrated energy utilization. The system supplies power to an island power grid through a wind driven generator and photovoltaic heat, produces hydrogen through an electrolytic tank, stores hydrogen through a hydrogen storage tank, and supplies the hydrogen to a hydrogen load or generates power through a fuel cell. According to the system, a low-pressure and low-temperature heat storage tank and a high-pressure heat storage tank group (high-pressure medium-temperature / high-pressure low-temperature) are innovatively constructed, and photovoltaic heat, waste heat of a hydrogen electrolytic tank and waste heat of a fuel cell are recycled and stored in the low-pressure and low-temperature heat storage tank. The low-temperature heat energy is used as a heat source of a heat pump after being subjected to auxiliary heating of a geothermal well, and heat generated by the heat pump is stored in a high-pressure medium-temperature heat storage tank The heat energy of the high-pressure medium-temperature heat storage tank can be supplied to the medium-temperature heat load and can also drive the ORC system to generate power. Efficient gradient utilization of wind, light, terrestrial heat and waste heat is achieved, and the energy self-sufficiency rate and the system stability of the island microgrid are remarkably improved through bidirectional flexible adjustment of electric power and thermal power.

A fluidized bed gasification system for high-moisture lignite is disclosed. The outlet of the drying and pulverizing unit is connected to the inlet of the fluidized bed gasification unit. The outlet of the fluidized bed gasification unit is connected to the inlet of the sensible heat recovery unit. The outlet of the sensible heat recovery unit is connected to the inlet of the gas-solid separation unit. Part of the superheated steam discharged from the steam outlet of the sensible heat recovery unit goes downstream, and part of it enters the fluidized bed gasification unit together with oxygen. The outlet of the gas-solid separation unit is connected to the synthesis system. One outlet of the synthesis system discharges synthesis gas, and the other outlet discharges methane. The methane and air enter the hot air device for combustion to produce high-temperature flue gas, which enters the drying and pulverizing unit. The drying heat source of this invention comes from the combustion of methane produced by the system itself, and the steam required for gasification comes from the sensible heat recovery of the system's own synthesis gas. The material and energy coupling between each unit is close. This design reduces the dependence on external utilities and makes the device structure more compact.

The utility model discloses a kind of methanol washing device waste heat recovery systems, including methanol water washing tower, separation tower cooler, separation column reflux tank, first reboiler, hot regenerator, hot regenerator cooler, hot regenerator column reflux tank, second reboiler, heat exchanger and water washing tower;The top outlet of methanol water washing tower is also communicated with the liquid inlet of hot regenerator by pipeline;The gas phase outlet of hot regenerator column reflux tank is communicated with the heat medium inlet of heat exchanger by pipeline, the heat medium outlet of heat exchanger is communicated with the bottom air inlet of water washing tower by pipeline, and the top exhaust port of water washing tower is communicated with the air inlet of flare by pipeline.The advantage is that: the efficient compact waste heat recovery system proposed in the utility model, by optimizing heat medium circulation, realize the step-by-step utilization of low-temperature heat energy, finally reduce steam consumption, provide key technical support for industry green low-carbon transformation.