619 results about "Heat regeneration" patented technology

The invention discloses a carbon capture and energy storage and thermal power generation coupled energy comprehensive utilization system, which comprises a thermal power generation system, an energy storage system and a carbon capture system, and is characterized in that a compression energy storage unit of the energy storage system is coupled to a feed water heat regeneration unit of the thermal power generation system; an expansion energy release unit of the energy storage system is coupled to a steam turbine generator set of the thermal power generation system, and a steam-water cycle working medium in the thermal power generation system serves as a heat storage and cold storage medium of the carbon dioxide energy storage system. The carbon capture system is coupled between the thermal power generation system and the carbon dioxide energy storage system, captures carbon dioxide gas in the flue gas, inputs the carbon dioxide gas into the carbon dioxide energy storage system to serve as a circulating working medium, and heats the circulating working medium in the expansion energy release unit through waste heat of the flue gas. According to the scheme, the operation efficiency of the thermal power generation system and the operation efficiency of the carbon dioxide energy storage system can be improved, the overall energy utilization efficiency of the system can be improved, and meanwhile the emission amount of gas pollutants is reduced.

The invention provides an easy-to-assemble backheating device for a solid elastic card, which comprises a sleeve, a plurality of solid elastic card material plates stacked in the sleeve and a pressure head for applying stress to the solid elastic card material plates, and the sleeve is composed of a plurality of parts and is used for inspecting or assembling and disassembling the plurality of solid elastic card material plates when being unfolded; each solid elastic clamping material plate is provided with a flow cavity after being stacked, a heat-conducting medium exchanges heat with the solid elastic clamping material plates through the flow cavities when heat or cold is generated, and the heat-conducting medium flows into a heat exchanger through a liquid through hole in the pressure head for heat exchange. The sleeve is designed to be a plurality of detachable parts or folding parts, during assembly, a plurality of solid elastic clamping material plates can be conveniently placed in, alignment is convenient, in the loading and unloading process, even if a certain solid elastic clamping material plate goes wrong, opening and inspection are convenient, and therefore the assembly efficiency is improved, and the fault solving efficiency is improved.

The present invention belongs to the technical field of desulfurization activated carbon regeneration, and relates to a blast furnace gas desulfurization activated carbon regeneration process and device, the regeneration device includes a washing and extraction tank, a regeneration reactor, a gas detection and analysis system, an automatic control system, a temperature monitoring system, and a deoxygenation reactor; the regeneration process includes S1, washing and extraction, S2, heating regeneration: according to the sulfur content of the outlet gas of the regeneration reactor, the heating temperature is adjusted by gradient, and the temperature range of the regeneration reactor is controlled: 150-300°C, and the temperature gradient is 30-50°C; S3, gas circulation, air oxidation, so that elemental sulfur is precipitated from polysulfide. The regeneration process of the present invention has a small carbon loss rate, increases the number of regenerations, and further reduces costs; the temperature of the thermal regeneration process is 150-300°C, the regeneration temperature is low, and the regeneration temperature can be adjusted according to the outlet gas concentration gradient, reducing energy consumption, and at the same time ammonia resources can be recycled, reducing the amount of solution used and the amount of waste liquid discharged, and the regeneration process can obtain elemental sulfur with economic value.

The utility model discloses a waste asphalt pavement material separation and regeneration system which comprises a feeding device used for loading waste asphalt pavement materials and screening the waste asphalt pavement materials with different particle sizes so as to realize split-diameter output; the granulating device is connected with the feeding device so as to crush the waste asphalt pavement materials output in a split-diameter manner into the waste asphalt pavement materials with specified specifications; and the separating device is connected with the granulating device so as to separate stones from asphalt from the crushed waste asphalt pavement materials, or the separating device can further comprise a fine screening device which is connected with the separating device so as to screen and obtain fine materials meeting the particle size requirement. The system disclosed by the utility model can complete separation or fine screening of the waste asphalt pavement material doped with super-large particle size and caking at one time (without material returning), and remove an asphalt film with coarse particle size, so that 90% of asphalt in the waste asphalt pavement material is a finished product material with the grade of 0-3mm, the mixing amount of plant-mixed hot-recycling RAP can reach 100%, and the mixing amount of the plant-mixed hot-recycling RAP can reach 100%. And the device can be used for road conditions such as upper, middle and lower surface layers of expressways or first-grade roads, so that the economic benefits and the social benefits are remarkably improved.

The utility model discloses a separation and regeneration system for a recycled material of an asphalt pavement. The separation and regeneration system comprises a feeding device, a first fine screening device, a sizing device and a separation device, the system disclosed by the utility model can complete separation or fine screening of an asphalt pavement recycled material doped with super-large particle size and caking at one time (without material returning), and remove an asphalt film with coarse particle size, so that 90% of asphalt in the asphalt pavement recycled material is a 0-3mm grade finished product material, and the mixing amount of plant-mixed heat regeneration RAP can reach 100%; and the device can be used for road conditions such as upper, middle and lower surface layers of expressways or first-grade roads, so that the economic benefits and the social benefits are remarkably improved.

The utility model provides an on-site thermal regeneration asphalt composite heating machine which comprises a vehicle body, a first heating unit and a movable frame body, a second heating unit is arranged on the movable frame body, a track is arranged on the upper portion of a chassis of the vehicle body, and the movable frame body can move along the track. A first lifting mechanism is arranged on the vehicle body, a second lifting mechanism is arranged on the movable frame body, the first lifting mechanism and the second lifting mechanism are matched to enable the movable frame body to descend to the ground, and a traction mechanism is arranged on the rear portion of the vehicle body and used for pulling the movable frame body to move on the ground. Two devices of the asphalt pavement heating machine are integrated into one asphalt pavement heating machine, the asphalt pavement heating machine is divided into the upper heating unit and the lower heating unit, the construction efficiency can be guaranteed, and the transportation cost of the devices and the personnel cost are reduced.

The invention discloses a pre-separation-free method for directly repairing and regenerating a retired lithium ion battery, which comprises the following steps of: after completely discharging a waste lithium ion battery, disassembling and stripping a positive electrode material belt; mixing a lithium source, a reducing agent and a dipole aprotic solvent to prepare a lithium source solution; mixing the positive electrode material strip with a lithium source solution, carrying out heating reaction at 60-100 DEG C, and after the reaction is finished, carrying out centrifugation and screening to obtain a mixed solution containing a lithium source, a dipole aprotic solvent and a binder, a regenerated precursor and a current collector; and mixing the regenerated precursor with lithium carbonate, and calcining to obtain the regenerated lithium battery positive electrode material. The method provided by the invention can realize repair and regeneration of the positive electrode material while separating the positive electrode material, the binder and the current collector, overcomes the complex operation problem of separation of pretreatment and regeneration processes in a traditional hydrothermal regeneration process, and simplifies the process flow.

A heatless regeneration air drying system for a locomotive comprises a tower, a lower cover is arranged in the middle of the tower, two groups of drying towers are mounted on the lower cover, an exhaust pipeline communicated with the two groups of drying towers and used for exhausting dry air is integrated in the lower cover, and a valve block is fixed at the bottom of the lower cover. A pipeline is arranged in the valve block, a pneumatic combination valve for controlling wet air to enter the drying towers and controlling waste gas containing water, oil and impurities to be discharged out of the drying towers is integrated in the valve block, the pneumatic combination valve is communicated with the two drying towers through the pipeline on the valve block, and an electromagnetic valve set for controlling the pneumatic combination valve to act and an electric controller for controlling the electromagnetic valve set are installed on the tower frame. Each group of drying towers is formed by connecting two tower bodies in series, an adsorbent and an oil-water separator positioned below the adsorbent are arranged in each tower body, and the four tower bodies are distributed on the lower cover in a rectangular shape. The requirements for large air volume and long air using time of a locomotive braking system are met, the space occupancy rate is small, the pipeline structure is simple, and maintenance and overhaul are convenient. The invention further provides a control method of the heatless regeneration air drying system for the locomotive.

The invention provides an energy storage battery liquid cooling dual-mode heat management and battery storage space heat recovery temperature and humidity coordinated regulation and control system and method. The system is composed of a heat pipe cooling module, a steam compression refrigeration cycle module and a module for waste heat recovery and runner regeneration. The heat pipe cooling module and the circulating pump form a natural cooling loop through the liquid cooling plate and the heat pipe heat exchanger; the vapor compression refrigeration cycle module efficiently and rapidly reduces the temperature of cooling liquid through a phase change refrigeration working medium. And the waste heat recovery module uses condensation waste heat for rotary wheel dehumidification regeneration. The system automatically switches double modes according to the temperature of cooling liquid: heat pipe energy-saving cooling is started when the temperature is lower than or equal to 35 DEG C, steam compression refrigeration is switched when the temperature is higher than 35 DEG C, and condensation waste heat of the two modes preheats regenerated air through a heat pipe heat exchanger, then the temperature is supplemented to the regeneration temperature through an electric heater, a rotating wheel is driven to dehumidify, and dry air is fed into a battery cabin. The method gives consideration to energy efficiency and thermal safety, and is suitable for thermal management and space humidity regulation and control of an energy storage battery system.

The present application relates to the technical field of road construction, and specifically discloses a regeneration agent for hot regeneration of asphalt pavement and a preparation method thereof. In the regeneration agent of the present application, styrene-butadiene latex can form a network structure in asphalt, enhance the strength and toughness of the asphalt film, and resist the applied stress to a certain extent, hindering the plastic deformation of asphalt. At the same time, diatomaceous earth can adsorb the aromatic and saturated components in asphalt, and to a certain extent restrict the flow of asphalt. Under the joint action of styrene-butadiene latex and diatomaceous earth, the regeneration agent of the present application can make the hot regenerated asphalt have good anti-rutting performance, which is conducive to the promotion of asphalt hot regeneration technology.

The invention provides a heat regeneration device and a refrigerating and heating device, the heat regeneration device comprises a sleeve and solid elastic clamping material plates, the inner wall of the sleeve comprises protrusions, the multiple solid elastic clamping material plates are stacked in the sleeve, each solid elastic clamping material plate comprises a groove, a space formed by stacking the multiple grooves is used for containing the protrusions on the inner wall of the sleeve, and the protrusions are arranged on the inner wall of the sleeve. After the grooves are stacked, gaps between the grooves and the protrusions form flow cavities for heat conduction fluid to flow through. The protrusions are arranged on the inner wall of the sleeve and extend into the grooves of the solid elastic clamping material plate, the position of the solid elastic clamping material plate can be fixed, the flow resistance of gaps between the grooves and the protrusions is small, and the heat conduction efficiency is improved. In addition, the contact area between the flow cavity and the solid elastic clamping material is large, and the heat conduction efficiency of the heat conduction fluid is further improved.

The utility model relates to the technical field of water purification, and discloses a water purification system, which comprises a water production device, a heat regeneration device and a control valve group, the water production device comprises a front filter element, a water storage unit and a heating unit which are serially connected to a water production pipeline, and the front filter element is provided with a first water outlet and a first water inlet communicated with the water storage unit; the heating unit is provided with a heating water inlet and a heating water outlet connected with the boiling water taking port, and the heat regeneration device comprises a heat exchange unit, a regeneration pipeline connected with the first water outlet and a drainage pipeline connected with the first water inlet. The two ends of the first heat exchange channel are connected with the water storage unit and the heating water inlet correspondingly, the two ends of the second heat exchange channel are connected with the heating water outlet and the regeneration pipeline correspondingly, and the control valve set is arranged on the water making pipeline and the regeneration pipeline. The heating power of the heating unit does not need to be frequently adjusted, the requirement that a user can still directly take boiling water before and after the water purification system executes the heat regeneration mode is met, waiting is not needed, and user experience is improved.

The invention provides a heat-electricity coupling driven indirect cooling and heat regeneration mixed exhaust turbofan engine, and belongs to the technical field of aero-engines, the heat-electricity coupling driven indirect cooling and heat regeneration mixed exhaust turbofan engine comprises an engine body, and an indirect cooling and heat regeneration heat exchange system, a transmission system and an electric propulsion system are arranged in the engine body; the electric propulsion system is connected with the transmission system and drives the transmission system to do work, the transmission system and the electric propulsion system are both arranged at the middle section position of the engine body, and the indirect cooling heat regeneration heat exchange system is arranged at the head section position and the tail section position of the engine body. According to the heat-electricity coupling driven intercooling regenerative mixed exhaust turbofan engine, the solid oxide fuel cell is introduced, so that the thermodynamic cycle effective work of the engine is increased, the overall energy utilization rate of a propulsion system is remarkably improved, an optimal power supply degree design value interval is provided, and the power supply degree design value interval is optimized. And a design reference basis is provided for reasonable thermal-electric energy distribution of the corresponding propulsion system configuration in the design stage.

The invention discloses a biomass supercritical water gasification hydrogen production and fuel cell hydrogen-electricity coupling system which comprises a supercritical water gasification reactor, a material conveying system, a preheating and heat regeneration system, a gas-liquid separation system, a combustion gas combustion system, a hydrogen purification system and a hydrogen fuel cell system. The material conveying system comprises a storage tank, a high-pressure slurry conveying device, a first high-pressure plunger pump and a water tank; the preheating and heat regeneration system comprises a heat regenerator, a preheater and a second high-pressure plunger pump; the gas-liquid separation system comprises a back pressure valve and a gas-liquid separator; the fuel gas combustion system comprises a combustion gas combustion device and a combustion gas storage tank; the hydrogen purification system comprises a hydrogen purification device, a combustion gas storage tank and a hydrogen storage tank. The supercritical water gasification reaction system and the hydrogen fuel cell power generation system are coupled, hydrogen is directly generated and efficiently converted into electric energy, the advantages of being environmentally friendly and clean are achieved, and efficient utilization of biomass resources is achieved.

The invention relates to a one-machine, three-device and four-working-medium full-effect power generation system technology for earth rock heat and other steam energy, in particular to a'gas-gas-steam-steam 'one-machine, three-device and four-cycle' micro-condensation cycle water feeder system, a double-water working medium heat exchanger system, a reverse Carnot cycle system and an earth rock heat output system which are matched with one another. A duplex reverse Carnot cycle system double-effect parallel medium two-direction progressive technological process, a single working medium through-flow structure and Rankine cycle uniform heat variable flow through-flow with'thermal unloading water and thermal loading water 'single working medium partition wall convection' micro-condensation heat regeneration and'main energy small flow steam and heated cycle huge running water 'double working medium partition wall convection heat exchange' are systematically created. The invention relates to a geothermal steam working medium independent heat exchange type output circulation, Rankine cycle power generation with two closed working media equal in heat and unequal in water through-flow, and a multi-system working principle that model selection is performed according to 6-20 times of through-flow and accumulation of small efficiency factors is equal to efficiency is combined, and a one-machine, three-device and four-cycle full-effect power generation system of general steam turbine distribution system full-efficiency power generation is included.

The invention discloses an energy-saving dual-fuel heat accumulating type burner usage monitoring control method and system, and relates to the technical field of control and regulation, the energy-saving dual-fuel heat accumulating type burner usage monitoring control system comprises an MEMS multi-parameter sensing array, a tail gas sensor array and a distributed optical fiber temperature sensing module which are deployed in parallel; millisecond-level fuel flow and air flow adjustment is achieved through inner ring flame tensor feedback control, and second-level fuel ratio adjustment is achieved through inner ring tail gas component closed-loop self-adaptive adjustment; and the heat storage regeneration cycle, ash removal triggering and low-speed fuel and air scheduling are achieved through outer ring model predictive control scheduling. The invention provides a multi-layer closed-loop self-adaptive monitoring control method based on flame tensor, tail gas components and a temperature field, and model prediction control is introduced to carry out overall scheduling on a heat storage-combustion coupling process, so that dynamic self-adaption of a fuel ratio, online prediction of heat storage body scaling and multi-time scale coupling optimization are realized.

A regenerative thermal oxidizer assembly includes a first housing member and a second housing member. The first housing member defines a regenerative portion and a combustion chamber. The second housing member defines an inlet chamber and an outlet chamber. A regenerator is disposed within the regenerative portion of the first housing member. A thermal element extends through the first housing member into the combustion chamber for providing heat to the combustion chamber for initiating combustion inside the combustion chamber. The first housing member is rotatable around a central axis relative to the second housing member for rotating the regenerator relative to the inlet chamber and the outlet chamber.

The invention relates to a method for preparing low-carbon olefin, which comprises the following steps: contacting an olefin-rich raw material with a thermal regeneration catalyst, and carrying out a first catalytic conversion reaction in a dense-phase fluidized bed layer of a first reactor provided with an instant energy supplement system, the reacted material flow is rapidly cooled through a cooling area, close to the upper part, in the first reactor, so that the reacted material flow is cooled to a target temperature of 450-530 DEG C and then is sent out of the first reactor. According to the method, heat is immediately supplemented for the dense-phase fluidized bed layer, so that the olefin-rich raw material is subjected to catalytic cracking reaction within a proper reaction temperature range, the influence caused by overlarge temperature drop in the reaction process is reduced, and the light raw material is promoted to be subjected to single-molecule cracking reaction; and the yield and the selectivity of low-carbon olefins with high added value, such as ethylene, in the obtained product are improved.

The utility model relates to the technical field of water purification, and discloses a water purifier which comprises a water purification system and a heat regeneration device, the water purification system comprises a front filter element, a water storage unit, a heating unit and a heat exchange unit which are connected to a water purification pipeline in series, the front filter element is provided with a first water inlet and a first water outlet, and the heating unit is provided with a heating water inlet and a heating water outlet. The heat exchange unit is provided with a first heat exchange channel and a second heat exchange channel, the heat regeneration device comprises a heat regeneration pipeline, a regeneration drainage pipeline and a control valve group, and the control valve group is switched to a first state based on the fact that the purified water amount of the water purification system reaches a preset nominal value; boiling water of the heating unit flows into the heat exchange unit and exchanges heat with normal-temperature water from the water storage unit to form hot water with a preset value, and the hot water flows into the front filter element to carry out hot flushing on the front filter element. The heating power of the heating unit does not need to be frequently adjusted, the requirement that a user can still directly take boiling water before and after the water purification system executes the heat regeneration mode is met, waiting is not needed, and user experience is improved.

The invention relates to the technical field of new energy automobiles, and provides a new energy automobile battery heat dissipation management method and system, and the method comprises the steps: building a thermal regeneration model based on battery electric heating parameters, environment parameters and heat dissipation system state parameters which are collected in real time, and generating a battery heat dissipation instruction; in combination with the driving destination mileage of the new energy vehicle, grading execution is performed after the battery heat dissipation instruction is scored through an improved deep Q network model; the heat transfer efficiency of a liquid cooling system, the power consumption of a heat dissipation system and the degradation degree of a three-dimensional temperature distribution field of a battery are calculated in real time after grading execution, and when three continuous set execution cycles meet set conditions, the liquid cooling plate is triggered, selected and executed to be divided into micro-fluidic units, the flow distribution ratio of cooling liquid is solved, and a local flow field is reconstructed. Or the effective heat conductivity coefficient is recognized through the electrolyte impedance spectrum, the phase change material is triggered to be released or removed, and dynamic optimization is carried out on battery heat dissipation management. According to the invention, accurate management and dynamic optimization of heat dissipation of the new energy automobile battery can be realized.

The invention relates to the technical field of waste gas recycling, in particular to a refining agent regeneration method and system. The refining agent is used for removing impurities in polyolefin hydrocarbon raw materials, and the regeneration method comprises the following steps: sequentially and repeatedly purging and cooling the polyolefin refining agent by using nitrogen to respectively obtain first regeneration cooling exhaust gas and a purging refining agent; sequentially carrying out liquid separation and first pressure swing adsorption on the first regeneration exhaust gas to obtain a first hydrocarbon adsorption material; pressurizing and displacing the purging refining agent by using a polyolefin raw material to respectively obtain mixed exhaust gas and a regenerated refining agent; the mixed exhaust gas is subjected to liquid separation and second pressure swing adsorption in sequence, and a second hydrocarbon adsorption material is obtained; and desorbing the first hydrocarbon adsorption material and the second hydrocarbon adsorption material to obtain the polyolefin recycled material. According to the regeneration method, a three-stage coupling separation system of purging regeneration, liquid separation and pressure swing adsorption is constructed, and compared with a traditional thermal regeneration method, the recovery rate of hydrocarbon raw materials in regenerated exhaust gas of the refining agent can be increased only through pressure swing adsorption.

The invention relates to the technical field of low-temperature methanol washing, in particular to an energy-saving low-temperature methanol washing process which comprises the steps of acid gas removal of raw material gas in an absorption tower, desorption and regeneration of a rich solution after the acid gas is absorbed, and cyclic utilization of a methanol solution. Through functional differentiation of a sulfur-containing semi-barren solution and a sulfur-free semi-barren solution, the circulation amount of lean methanol is reduced compared with that of a traditional process, the load and steam consumption of a thermal regeneration tower are directly reduced, the sulfur-containing semi-barren solution selectively absorbs H2S in a desulfurization section, 50-60% of CO2 is removed, the load of a decarburization section is reduced, the total number of tower plates of an absorption tower is reduced, and the equipment investment is reduced; the desulfurization section is divided into two or three sections and is provided with a cooler, the temperature of each section is strictly controlled to be-50 DEG C to-60 DEG C, efficiency reduction caused by heat absorption and release is avoided, and the decarburization section adopts barren liquor and sulfur-free semi-barren liquor combined absorption, so that the concentration of CO2 in purified gas is stabilized below 20ppm, and the requirements of high-end processes such as synthesis ammonia and coal hydrogen production on gas purity are met.

The utility model relates to the technical field of adsorption type drying machine equipment, in particular to a waste heat regeneration adsorption type drying machine which comprises a base and a cover plate, adsorption type drying machine equipment is fixedly arranged at the top end of the base, an air inlet pipe is fixedly arranged on one side of the bottom end of the adsorption type drying machine equipment, and a cleaning box is fixedly arranged at one end of the air inlet pipe. The bottom end of the cleaning box is fixedly connected with the base. Dust on the surface of the filter screen can be effectively cleaned away, the surface of the filter screen is kept clean and tidy, and therefore the stable filtering effect is kept, meanwhile, the whole cover plate can be conveniently detached, workers can conveniently clean the interior of the cover plate at regular intervals, dust and impurities on the surface of the dust receiving plate are completely cleaned away, and the working efficiency is improved. And meanwhile, disassembly operation is simple and convenient, self-operation of workers is facilitated, and the practicability and convenience of the whole equipment are improved.

The invention relates to the technical field of gas purification and drying, in particular to zero-gas-consumption blast heat regeneration drying equipment which comprises a double-tower type drying mechanism, an air filtering mechanism, an air blower, a fixing plate and a filtering plate, the air filtering mechanism comprises a filtering chamber, a filtering net, an adsorption layer and an oil absorption layer, and the filtering plate is arranged before air is sucked into the air blower; when the air is sucked into the air blower and conveyed to the filtering chamber through the air blower, the impurities in the air can be filtered again through the matched use of the filter screen, the adsorption layer and the oil absorption layer, and the air purification effect is improved; according to the double-tower drying device, the air is filtered to prevent impurities contained in the air from influencing the service life of the drying device, and as the impurities in the air are filtered before and after the air enters the air blower and before the air enters the double-tower drying mechanism, the impurities in the air are prevented from influencing the normal use of the double-tower drying mechanism.

The invention discloses a heat regeneration type gas turbine, which belongs to the technical field of gas turbines and comprises a gas compressor, a combustion chamber and a heat regenerator, the gas compressor, the combustion chamber and the heat regenerator are sequentially connected along a first direction, and the heat regenerator is provided with a hot gas inlet for hot gas to enter the heat regenerator. The heat regenerator is provided with a hot gas inlet, the hot gas inlet is formed in the end face, facing the combustion chamber, of the heat regenerator and connected with a gas outlet of the combustion chamber, and during work, high-temperature gas exhausted from the gas outlet of the combustion chamber directly enters the heat regenerator to exchange heat with cold gas and then is exhausted from the heat regenerator. The combustion chamber and the heat regenerator are connected without an additional connecting pipeline, and the heat regenerator, the gas compressor and the combustion chamber are coaxially arranged, so that the axial length and the radial size of the whole regenerative gas turbine can be reduced, the weight of the whole regenerative gas turbine can be reduced, and a higher fuel consumption rate can be obtained on the premise of a smaller overall size; and meanwhile, cold air enters and exits from the same side of the heat regenerator, the cold air passing through the heat regenerator does not need to be guided back to a combustion chamber through an additional channel structure, therefore, the structure is simple and compact, the overall dimension of the whole machine can be further shortened, and the weight of the whole machine can be further reduced.

The invention relates to the technical field of compression refrigeration, in particular to an air conditioner heat pump system and an air conditioner. The air conditioner heat pump system comprises a heat regenerator and a throttling component. The heat regenerator is provided with a first heat regeneration pipe and a second heat regeneration pipe; the throttling component is arranged on a refrigerant channel between the condenser and the evaporator and communicates with the first heat return pipe and the second heat return pipe. And under the refrigerating working condition and the heating working condition, the refrigerant before throttling enters the first heat return pipe, and the refrigerant after throttling enters the second heat return pipe, so that the refrigerant in the first heat return pipe exchanges heat with the refrigerant in the second heat return pipe. According to the heat exchanger, through the throttling component, a refrigerant before throttling can enter the first heat return pipe, the refrigerant after throttling can enter the second heat return pipe, and the refrigerant in the first heat return pipe exchanges heat with the refrigerant in the second heat return pipe, so that the refrigerant in the first heat return pipe is reduced, and the supercooling degree of the refrigerant is improved; the problem that in the prior art, an air conditioner heat pump system cannot improve the supercooling degree of a refrigerant under the heating working condition is solved.

The invention discloses a gas concentration-oxidation-heat regeneration system and method, and relates to the technical field of coal mine energy conservation and emission reduction, the gas concentration-oxidation-heat regeneration system comprises a chemical adsorption device which is communicated with low-concentration gas and is used for adsorbing and dedusting the low-concentration gas, and a physical adsorption device which is communicated with the chemical adsorption device and is used for adsorbing and dehumidifying the low-concentration gas, the chemical adsorption device and the physical adsorption device are communicated with the oxidation device through the chemical desorption device and the physical desorption device respectively, the oxidation device is communicated with the waste heat utilization device, and low-concentration gas is subjected to dust removal treatment while methane adsorption is completed through the chemical adsorption device; the physical adsorption device is used for completing methane adsorption and dehumidifying low-concentration gas at the same time, and desorbing is completed and concentrated methane after desorption is subjected to oxidation and waste heat utilization at the same time, so that dust removal, dehumidification, concentration, oxidation and waste heat utilization of the device form a whole, the structure of the device is simplified, and the low-concentration gas is fully utilized.

The invention discloses an oil field well head gas circulation injection system and technology. The system comprises a purification unit, a pre-pressurization unit, a cooling water removal unit, a pressurization injection unit and a control system. Wherein the purification unit comprises a desulfurization tank, a centrifugal water removal tank and a filter which are communicated with one another, and the pre-pressurization unit comprises a diffusion pipeline and a gas inlet main pipeline which are arranged in parallel; the cooling and dewatering unit comprises a centrifugal dehydrator, a freezing dryer and a micro-heat regeneration adsorption type dryer; the pressurizing injection unit comprises a filtering dehydrator, a variable frequency motor and a four-stage piston compressor; the control system comprises a standard electrical control unit and a remote monitoring unit. Oilfield wellhead gas is recycled, purified and pressurized and then circularly injected into a well, separation, recycling, purification and supercritical pressurization of carbon dioxide in mixed gas are achieved, gaseous carbon dioxide can be restrained from being condensed into liquid based on the four-stage piston compressor, and therefore zero loss of carbon dioxide gas in the mixed gas is guaranteed, and the energy consumption is reduced. 100% recycling of carbon dioxide is achieved, zero emission of carbon dioxide in the external environment is achieved, and the problems that in the prior art, wellhead gas is directly exhausted into air, consequently, environment pollution is caused, and energy waste is avoided are solved.

The utility model belongs to the technical field of compressed air supply, and particularly relates to an instrument purification compressed air supply system, which comprises a normal supply unit and an emergency supply unit, and is characterized in that the emergency supply unit comprises a screw air compressor, a high-efficiency degreaser, a micro-heat regeneration air dryer and a second dust fine filter which are connected in sequence; an outlet of the second dust fine filter is communicated with an outlet of the first dust fine filter, and emergency supply for the purified compressed air storage tank for the instrument is completed; a first bleeder and a second control valve are arranged on a pipeline between the screw air compressor and the efficient degreaser, and a first control valve is arranged on the first bleeder; a second diffusing pipe is arranged on a pipeline between the micro-heat regeneration air dryer and the second dust fine filter, a third control valve is arranged on the second diffusing pipe, and a fourth control valve is arranged on an outlet pipeline of the second dust fine filter. Compared with the prior art, the device has the advantages that the device can quickly respond to guarantee the supply of the purified compressed air of the instrument.

The invention discloses a thermal regeneration asphalt mixture functional reinforcement phase optimization design method based on discrete element simulation in the technical field of thermal regeneration road engineering material optimization, and the method comprises the steps: constructing a discrete element model of an asphalt mixture, extracting skeleton gap characteristic parameters, including the skeleton gap size, the volume ratio and the distribution condition, and obtaining a discrete element model of the asphalt mixture; according to the optimization design method, the mixing amount, the diameter range and the length parameters of the functional reinforcing material are optimized according to the characteristic parameters, the blindness of a traditional experiment depending on experience is avoided, and the design efficiency and performance of the functional asphalt mixture are improved. According to the method, the microstructure characteristics of the thermally recycled asphalt mixture are accurately quantified through the discrete element technology, the correlation model of the functional reinforced phase parameters and the skeleton gaps is established, the problems that a traditional test depends on experience and is low in efficiency are solved, and a high-performance material solution is provided for a functional asphalt pavement.