389 results about "Direct heating" patented technology

The invention relates to a functional liquid metal-based temperature-responsive hydrogel material and a preparation method thereof, and belongs to the technical field of functional polymer hydrogel materials.The preparation method comprises the following steps that a temperature-responsive hydrogel composite material comprises a hydrophobic association polymer gel and a hydrogel monomer, the hydrophobic association polymer gel comprises a hydrophobic association polymer monomer, a functional filler and an initiator. The functional filler is liquid metal gallium with the edge modified by graphene oxide, and has triple functions: firstly, the functional filler is used as an electrostatic crosslinking node to form a crosslinking network with anionic ionic liquid; secondly, dynamic repair is promoted, and Ga < 3 + > is released to promote dynamic bond recombination. In addition, as a functional filler, the hydrogel is endowed with excellent photo-thermal and electro-thermal conversion performance, and the multi-stimulus response capability is enhanced. The composite material realizes structural assembly by means of hydrophobic association, shows reversible phase change and repeated self-assembly characteristics under various stimuli such as photo-thermal, electric heating, direct heating and the like, and has wide application potential.

The heat accumulating type electric heater comprises a shell and a heat accumulator, a heat preservation and insulation layer is arranged on the inner side of the shell, the shell comprises a first shell section and a second shell section, and the shell is horizontal; the first shell section comprises an inlet section and a diffusion section, and the diffusion section is arranged to be in a conical shape. The diameter of the second shell section is larger than that of the inlet section. The two ends of the diffusion section are connected with the inlet section and the second shell section respectively. The heat accumulator is made of high-temperature-resistant alloy and provided with a plurality of heat exchange holes and heating holes, the heat exchange holes and the heating holes penetrate through the heat accumulator, heating units are arranged in the heating holes, and each heating unit comprises a resistance wire. According to the invention, gas flow heating is realized by adopting resistor direct heating and heat storage, the gas purity is high, and the test accuracy is good. The shell is of a horizontal structure, the length of an outlet pipeline can be reduced, temperature loss can be reduced, the defect that the temperature field is uneven due to the fact that the temperature of the upper portion of the heat accumulator is too high and the temperature of the lower portion is too low in the heat accumulation process can be overcome, and the temperature control precision reaches + / -1 DEG C.

The invention discloses a gas turbine air inlet temperature coordinated regulation and control system based on waste heat multi-stage utilization and an operation method, and relates to the technical field of combined cycle unit energy conservation, the system comprises a waste heat recovery module, an air inlet temperature regulation and control module, an energy conversion module and a control module; high-temperature exhaust smoke of the waste heat boiler is used as a heat source to heat a flue gas heat exchanger at the tail of the waste heat boiler of the combined cycle unit to generate hot water, and the hot water is used for directly heating inlet air of a gas turbine, driving an absorption heat pump to generate cold water to cool the inlet air of the gas turbine or driving an organic Rankine cycle module to generate power to be connected into auxiliary power, so that multipurpose utilization of waste heat of the unit is realized; in addition, the invention provides an operation method for synergistically improving the efficiency of the system and the combined cycle unit, the wide-load operation capacity and the partial-load energy utilization capacity of the unit can be effectively improved, meanwhile, the waste heat recovery capacity under the high-temperature condition is guaranteed, and the energy consumption efficiency of the unit is comprehensively improved.

Apparatus and associated methods relate to evaluating impurity content in battery materials. In an illustrative example, a battery material impurity assessment system (BMIAS) may include a slurry mixing system and an impurity extraction system (IES). The slurry mixing system, for example, may include a motor configured to rotate a vertical axis of a slurry container. For example, the motor may pause a movement of the slurry container when the vertical axis is rotated at a predetermined angle. For example, the IES may include a translatable magnetic mass (TMM) enclosed within a sheath. For example, by operating a position of the TMM, the IES may release non-target impurity and retain target substances. In some implementations, the target substance may be ionized by an acid treatment solution rapidly without direct heating. In some implementations, the target substances may be dispersed on a conductive filter to be directly used in subsequent analysis. Various embodiments may advantageously rapid high precision and rapid impurity testing for battery manufacturing.

The invention provides a direct heating type reconfigurable intelligent metasurface based on a phase change material and a preparation method thereof, the metasurface is composed of a plurality of metasurface units arranged in an array mode, and each metasurface unit comprises a substrate, a first dielectric layer, a middle metal layer, a second dielectric layer and a phase change material layer which are sequentially arranged from bottom to top; the two sides of the phase change material layer are respectively provided with a metal patch of a metal radiation patch structure. A contact electrode is arranged in the substrate; the first dielectric layer and the second dielectric layer are insulating layers, a first vertical through hole and a second vertical through hole are further formed in the metasurface unit, the metal patch radiation structure and a contact electrode of the substrate form an electrical path flow through the first vertical through hole and the second vertical through hole, and the current flows through the phase change material layer to drive the phase change material to generate crystalline state / amorphous state conversion. And an equivalent conductive path, electromagnetic coupling strength or local impedance between the metal patch radiation structures is changed in different phase states.

The invention discloses a process method for solid waste treatment and recycling based on multiple heat source scenes, and belongs to the technical field of solid waste treatment and recycling, and the process method comprises the following steps: obtaining high-temperature flue gas generated by multiple heat source scenes as a heating energy source, and purifying the high-temperature flue gas to remove harmful components in the high-temperature flue gas; the purified high-temperature flue gas is directly heated or indirectly heated through a heat exchange device, and solid waste is subjected to heat treatment; introducing the waste heat of the heated high-temperature flue gas into a steam generator to generate steam; by establishing a multi-heat-source collaborative input path, automatic switching and dynamic scheduling among heat sources can be realized according to heat treatment temperature requirements and treatment priorities of different solid waste types, the problems of low heat source utilization rate and poor treatment task matching degree in the existing process are solved, and the heat energy suitability and the process stability are improved.

The invention discloses reflow soldering equipment and process for SMT patch production. The reflow soldering equipment comprises a furnace body base, a conveying unit, a hearth and a sealing top cover. A conveying unit is horizontally laid on the furnace body base, the hearth is installed on the upper end face of the furnace body base in a sealed mode, and the interior of the hearth is evenly divided into three independent working areas which are the preheating area, the backflow area and the cooling area in sequence from left to right. A visual inspection chamber is installed at the position, located at the feeding end of the hearth, of the upper portion of the furnace body base. A heating device is arranged in each working area of the hearth; in the heating device of the backflow area, each microplate is slidably provided with a vertically arranged hot spray pipe, and the hot spray pipes can perform hot air pulse direct blowing on large-size surface-mounted elements on a PCB, directly heat pin welding spots, realize micro-swing attachment of the elements in cooperation with surface tension of solder paste, and eliminate mechanical stress when the chip mounter is placed.

The invention relates to the field of lithium ion batteries, in particular to a method for quickly and macroscopically synthesizing high-performance LiFe < 1-x > MnxPO4. The preparation method comprises the following steps: synthesizing Li3PO4, Fe3 (PO4) 2.8 H2O and Mn3 (PO4) 2.3 H2O precursors with uniform sizes by using a micro-channel reactor, mixing and drying the precursors and a carbon source to obtain mixed powder, carrying out high-temperature solid-phase treatment on the mixed powder by using a Joule heating technology, and directly heating reactants by using current to promote the growth of LiFe1-xMnxPO4 crystals, thereby finally synthesizing the high-performance LiFe1-xMnxPO4. According to the method, the precursor is synthesized by using the micro-channel reactor, a uniform supersaturated environment can be provided for precursor particle nucleation through micro-mixing, and particles with uniform particle size distribution can be more favorably generated; meanwhile, Joule heating is adopted, so that the reaction efficiency is improved, and the electrochemical performance of LiFe < 1-x > MnxPO4 is also improved.

An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability. High-voltage DC power conversion and distribution circuitry improves the efficiency of VRE power transfer into the system.

The invention relates to a self-heating silicon carbide ceramic separation membrane and a preparation method thereof. A separation membrane layer is directly heated and sintered by utilizing the self-heating characteristic of a silicon carbide support body. The preparation method comprises the following steps: pretreating a silicon carbide support body, putting the silicon carbide support body into ethanol and an acidic or alkaline solution for ultrasonic cleaning, cleaning with deionized water until the silicon carbide support body is neutral, and drying; the preparation method comprises the following steps: preparing separation layer slurry, uniformly dispersing a binder in a solvent, adding ceramic powder and a dispersant according to a certain ratio, and carrying out ball-milling mixing, defoaming and vacuum defoaming to obtain uniform bubble-free slurry. Coating a separation layer, coating the slurry on the surface of a silicon carbide support body, and drying in a drying oven to obtain a separation layer green body; roasting the separation layer, putting the green body into a self-heating furnace clamp, connecting stable current sources to two ends, accurately controlling the temperature through a voltage meter, an ampere meter and an automatic temperature control instrument by utilizing the high resistance characteristic of silicon carbide, realizing self-heating of the support body, rapidly sintering the separation layer, and naturally cooling to obtain the product. An external heat source is not needed, the process is simplified, the period is shortened, and a new scheme and a technical path are provided for preparation of the silicon carbide ceramic separation membrane.

The invention discloses a linear evaporation source and a co-evaporation evaporation source, belongs to the technical field of vacuum coating equipment, and aims to solve the problems of uneven heating, serious heat radiation overflow, easiness in nozzle condensation and inconvenience in maintenance in the prior art. The linear evaporation source comprises a body provided with a cavity and a nozzle, and is characterized in that a slit which does not penetrate to the cavity is formed in the body, a heating source is arranged in the slit, and the heating source heats the body wall where the cavity is located. According to the design, efficient and uniform direct heating is achieved, heat is conducted through the body wall to effectively heat the nozzle to prevent condensation, and the modular structure is convenient to maintain. The slits are arranged at the bottom and the top or on the two side walls so as to optimize the thermal field and inhibit thermal radiation. In addition, a trunk-branch type heating network and an intra-cavity rectifying plate can be arranged or a plurality of units are integrated to form a co-evaporation source. The device is particularly suitable for evaporation of high-melting-point materials such as metal, and has the advantages of being high in heating efficiency, accurate in temperature control, good in film thickness uniformity and convenient and fast to maintain.

The utility model relates to a temperature control component for a digital micro-fluidic chip and a reagent temperature control device, the temperature control component comprises a flow channel substrate, a first temperature control assembly and a negative pressure module, the flow channel substrate is provided with at least one temperature control flow channel, the temperature control flow channel is configured to contain liquid drops, and at least partial area of the temperature control flow channel is provided with a breathable waterproof layer; the first temperature control assembly is arranged on one side of the flow channel substrate and is configured to heat or cool the temperature control flow channel; the negative pressure module is connected to the flow channel substrate and / or the first temperature control assembly and pumps out bubbles in the liquid drops or gas dissolved in the liquid drops through the breathable waterproof layer. Compared with the prior art, the reagent heating device has the advantages that the reagent can be independently heated, direct heating on the surface of the chip is avoided, the chip material is not limited, the heating efficiency is high, the heating time is short, and the problem of bubbles caused by high-temperature heating of the reagent can be solved; and when the heating temperature is high, the problems that the reagent adheres to the chip and the performance of the chip is reduced cannot occur.

1. The name of this design product: direct cooling and direct heating machine. 2. Purpose of this design product: used to cool and heat the target object. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The application belongs to the field of turbine blade thermal barrier coating of an aero-engine. Specifically, it is a structure design, a preparation method and a prepared coating of a double-layer radiation-resistant thermal barrier coating with a high-reflection layer and a high-absorption layer. The coating comprises a high-absorption layer and a high-reflection layer. The high-absorption layer can absorb part of the energy of photon radiation and re-emit it into the environment, while relying on a cooling gas film to quickly remove heat. Part of the energy of the photon radiation is reflected by the high-reflection layer again to the high-absorption layer after passing through the high-absorption layer, and the process of absorption-emission-cooling gas film heat dissipation is repeated. Within a set temperature range, the absorption rate of the high-absorption layer is determined based on the temperature difference requirement between the inner and outer surfaces of the thermal barrier coating, and the high-absorption layer material is determined based on the absorption rate. The application greatly reduces the radiation heat flow penetrating the coating, avoids the direct heating of the high-temperature alloy by infrared radiation, and significantly improves the heat insulation capacity of the thermal barrier coating and the service life of the turbine blade.

The invention provides a photo-thermal direct-heating supercritical carbon dioxide power generation system, belongs to the technical field of supercritical carbon dioxide power generation, and can at least partially solve the problems that the highest temperature of existing fused salt heat storage is about 560 DEG C, the temperature of a heat storage system is low, and the power generation efficiency of supercritical carbon dioxide circulation is limited. The system comprises a photo-thermal conversion module, a pipeline module, a fused salt energy storage module, a water energy storage module and a power generation module, and is provided with a photo-thermal collector, so that the power generation module is directly heated by photo-thermal, the temperature of a working medium in the daytime heat collection period can be directly increased, the efficiency of a supercritical carbon dioxide circulating system is improved, and meanwhile, the heat storage function is taken into account; a more reasonable power generation mode is achieved, and the overall economical efficiency of the system can be improved.

1. Name of the designed product: Stove head (Dawn of the Age). 2. Use of the designed product: kitchen appliance for direct heating with combustible gas or wood as fuel. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view 1.

The utility model provides a small coffee machine, which relates to the technical field of coffee machines, and is characterized in that the small coffee machine comprises an upper machine body and a lower machine body which are rotatably connected, the bottom of the upper machine body is provided with a first covering part, and the top of the lower machine body is provided with a second covering part; the positions of the first covering part and the second covering part correspond to each other and are used for covering each other; the second covering part is provided with a first mounting structure for mounting an external water tank, and a first through hole is formed in the first mounting structure and is communicated with the interior and the exterior of the lower machine body; the instant heating assembly is arranged in the lower machine body; the water pump is arranged in the lower machine body and connected with the instant heating assembly; and the extraction assembly is used for directly or indirectly receiving the water which is pumped by the water pump and comes from the external water tank for extracting coffee. The small coffee machine has the advantages of being small in occupied space and good in heating performance.

The present invention discloses an adjustable large-temperature step-cross phase-change heat storage mixed working fluid high-temperature heat pump system, which belongs to the technical field of high-temperature heat pump systems. It includes a high-temperature heat pump circulation module and an open water supply module; the high-temperature heat pump circulation module is a circulation loop on the working fluid side, including a compressor, the working fluid side of three condensers, two gas-liquid separators, an evaporator and the working fluid side of three heat accumulators, and the circulating working fluid is an environmentally friendly binary non-azeotropic mixture; the open water supply module is an open loop on the water side, including a water pump, the water side of three condensers and the water side of three heat accumulators, and the working fluid on the water side is water. The present invention has three working conditions, namely direct heating working condition, heat accumulator heat storage working condition, and heat accumulator heat release working condition; the direct heating working condition achieves a reduction of irreversible losses by at least 14%; the heat accumulator heat storage working condition achieves a reduction of irreversible losses in the heat exchange process by at least 9%; the heat accumulator heat release working condition achieves an effective reduction of irreversible losses in the heat release process by at least 31%, thereby improving energy utilization.

The utility model relates to the technical field of fuel oil heating, and discloses a fuel oil heating system which comprises a heating heat exchanger and a cooling heat exchanger, one side of the cooling heat exchanger is communicated with a first oil inlet pipe, one side of the heating heat exchanger is communicated with a second oil inlet pipe, and one end of the first oil inlet pipe and one end of the second oil inlet pipe are communicated with a main oil inlet pipe. The heating heat exchanger is communicated with a first oil outlet pipe, the cooling heat exchanger is communicated with a second oil outlet pipe, and one end of the first oil outlet pipe and one end of the second oil outlet pipe are communicated with a main oil outlet pipe. According to the utility model, the fuel oil is heated in a heat conduction mode, so that the safety is higher, meanwhile, the condition of carbon deposition generated by direct heating is reduced, and meanwhile, the fluctuation value of the fuel oil in a temperature interval is smaller through acquisition and feedback of a sensor and accurate control of a computer.

Method for temperature control of a passenger compartment (5) of a motor vehicle (1) divided into several zones (15), wherein the motor vehicle (1) comprises at least one ventilation device (6) by means of which at least one of the zones (15) can be selectively temperature controlled by blowing a tempered airflow (3) into the passenger compartment (5), and at least one direct heating device (21) by means of which heat can be directly transferred to an occupant (19) located in one of the zones (15), wherein a desired zone-specific heat distribution (39) is specified, wherein an operating plan (51) is determined on the basis of the heat distribution (39), which specifies at least one operating parameter (52) relating to the at least one ventilation device (6) and at least one operating parameter (52) relating to the at least one direct heating device (21) for implementing the heat distribution (39).wherein the operating plan (51) is determined and / or the heat distribution (39) is specified and / or modified in such a way that the total energy demand of the at least one ventilation device (6) and the at least one direct heating device (21) required for the implementation of the heat distribution (39) is minimized.

The utility model relates to the field of dyeing machines, in particular to a dyeing and color testing machine which comprises an outer cylinder, a rotating frame rotatably arranged in the outer cylinder, a plurality of dyeing cups and a heating device, the radial width of the section, passing through the central axis, of the outer cylinder is gradually reduced from the middle to the two sides, and a heat-conducting medium is arranged in the outer cylinder. The dyeing cup is assembled on the rotating frame, the heating device is used for heating the heat-conducting medium, and the heat-conducting medium is used for directly heating the dyeing cup. According to the dyeing color testing machine with the structure, the use cost of the heat-conducting medium can be saved, the heating speed is high, the utilization rate of the heat-conducting medium is improved, meanwhile, the consumption of electric energy is reduced, and the production cost is greatly reduced.

The utility model relates to a connecting pipe fitting for a copper fluorine direct heating system, which comprises a main body pipeline and a branch pipeline connected with the main body pipeline, the main body pipeline and the branch pipeline are integrally formed, the surface of the main body pipeline and the surface of the branch pipeline are respectively provided with an anti-corrosion coating, and the end parts of the main body pipeline and the branch pipeline are respectively provided with a connecting thread. Reinforcing connecting lug blocks are arranged on the main body pipeline and the branch pipelines. According to the connecting pipe fitting for the copper-fluorine direct heating system, the main body pipeline and the branch pipelines are integrally formed, so that the welding defect is eliminated, and the safety and the reliability are enhanced.

This invention relates to the field of glass furnace technology, specifically to an energy-saving glass furnace with a dual heating system. The furnace body contains adjustable electric heating components. During movement, these components are synchronized by a control assembly that allows them to move synchronously and distribute heat evenly. As the heating rods heat, the transmission gear and the following gear move synchronously with the staggered toothed plates. Simultaneously, the two built-in mounting rods rotate synchronously inside the furnace body, ensuring uniform heating. Furthermore, as the built-in mounting rods rotate, the linkage rod moves along the staggered guide frame, causing the rods to tilt along the guide frame's trajectory. This allows the heating rods to face the shelf during rotation, facilitating direct heating of the glass objects.

The utility model discloses a flue gas carbon capture device, which belongs to the technical field of energy, and adopts the technical scheme that the flue gas carbon capture device comprises a gas inlet pipe, the right side of the gas inlet pipe is fixedly connected with a capture pipe, the right side of the capture pipe is fixedly connected with a gas outlet pipe, and the bottom of the capture pipe is fixedly connected with a recovery pipe; the inner sides of the catching pipe and the recycling pipe are movably connected with a catching and recycling mechanism, the inner side of the gas inlet pipe is movably connected with a pretreatment mechanism, traditional landing equipment can be abandoned, the flue gas treatment process is shortened, a pipeline is divided into the gas inlet pipe, the catching pipe and the gas outlet pipe, and the recycling pipe, a matched through groove, a supporting rotating rod and other structures are arranged at the bottom of the catching pipe; integration of smoke carbon capture and recovery is achieved, a honeycomb carbon adsorption plate directly completes smoke carbon adsorption in a capture pipe, after adsorption is saturated, a servo motor drives a supporting rotating rod to rotate, the supporting rotating rod is transferred into a recovery pipe, smoke carbon is rapidly released and recovered through a direct heating lamp and a guide fan, and meanwhile the activity of the honeycomb carbon is recovered.

The application relates to the technical field of automobiles, in particular to a power battery direct cooling and direct heating system, a control method and a commercial vehicle. The power battery direct cooling and direct heating system comprises an evaporator, which is arranged on one side of a power battery and used for heat exchange with the power battery; an air conditioner compressor, which is communicated with the evaporator; a condenser, which is communicated with the air conditioner compressor and the evaporator in series, and cooling medium in the condenser can absorb the temperature of an external environment; a heat exchanger, which is communicated with the air conditioner compressor and the evaporator in series, and the evaporator can be selectively communicated with the condenser and / or the heat exchanger; and a heat dissipation assembly, in which cooling medium is used for cooling a motor and an air compressor, and the heat dissipation assembly is communicated with the heat exchanger in series. The application can reduce the energy consumption of the whole vehicle on the basis of meeting the thermal demand of the power battery.

The present invention provides a device and method for rapid liquefaction and high-temperature atomization decomposition of nitrate crystals, comprising a high-temperature atomization module and a liquefaction module. A relatively short microwave heating spiral feeding device is used to achieve rapid liquefaction. The liquefaction module is connected to the high-temperature atomization module so that the nitrate crystals pass through the liquefaction module and then pass through the high-temperature atomization module to be directly heated by flame for high-temperature pyrolysis. The liquefaction module comprises a nitrate crystal storage tank, a heating device, a melting tank and a material pump. The bottom of the nitrate crystal storage tank is connected to the heating device, and one end of the heating device away from the nitrate crystal storage tank is connected to the melting tank. The bottom of the melting tank is connected to the material pump, which can continuously and rapidly liquefy the nitrate crystals and reduce the transportation failure of the high-temperature molten material. Moreover, due to the high temperature, the pyrolysis speed of the material is also fast, and NO in the pyrolysis gas is reduced. x High content.

The invention relates to the technical field of massage, in particular to a bionic hand pinching massager pillow which comprises a pillow and a massage pillow body composed of bionic massage heads rotationally arranged on the pillow, a driving shaft is fixed to one side of each bionic massage head, and a functional mechanism used in cooperation with the bionic massage heads is arranged in the pillow; the functional mechanism is composed of a liquid storage tank, a heating assembly, a transmission structure and a conveying assembly, and the liquid storage tank is located above the heating assembly; the heating assembly comprises a rotating disc, and a plurality of annularly-distributed mounting grooves are formed in the rotating disc. The eddy current and Joule effect are utilized to heat the heat conduction block, non-contact heating is achieved, direct heating of an electric heating wire or open fire is avoided, the fire risk is reduced, meanwhile, heat energy transfer loss is reduced, the transmission sleeve is matched to drive the stirring shaft to rotate, liquid thermal stratification is broken, it is ensured that the temperature in the liquid storage tank is uniform, and local overheating or cooling is avoided; the heating consistency and safety are improved, and the heating efficiency is improved.

The invention relates to the technical field of MBR membranes, in particular to an MBR flat membrane repairing method which comprises the following steps: tearing off a filter membrane and flow guide cloth which are used for a long time or are damaged; covering the surface of the guide plate with a new filter membrane and guide cloth; and the filter membrane and the flow guide cloth are welded on the flow guide plate by adopting a convex welding knife. The convex welding knife is used for directly heating and welding to form the groove, so that the filter membrane and the guide plate are welded together, the processes of polishing and welding rib attaching are reduced, the manpower is saved, the working efficiency is improved, and the welding effect is also enhanced.

The invention provides a micro powder dynamic extraction system with direct heating, stirring and dust suppression functions. The technical problems of low indirect heating efficiency, poor dust suppression effect and the like in the prior art are solved. Comprising an extraction tank body; the automatic stirring device comprises a stirring motor mounted in the center of the top of the extraction tank, and a stirring rod and a stirring blade which extend into the extraction tank. The material pipeline enters the extraction tank body through the feeding hole; the liquid pipeline is connected with the extraction tank body; the direct heating assembly comprises a hot gas distribution pipe arranged in the extraction tank body, and the hot gas distribution pipe is communicated with an external heat source and is used for introducing heating gas into liquid in the tank so as to directly heat and stir the liquid; the primary dust suppression assembly comprises a spraying device arranged at the top in the extraction tank body, the spraying direction faces the lower part in the tank body, and the primary dust suppression assembly is used for forming a water curtain to suppress the micro powder from rising; and the secondary dust removal assembly comprises a wet dust collector and is used for purifying dust-containing gas discharged from the extraction tank body.