689 results about "Gas blending" patented technology

The utility model discloses a multi-element gas automatic mixing device which comprises a plurality of gas branches, all the gas branches are jointly connected with a gas main path, the gas main path is connected with a mixing tank, the gas main path is provided with a static mixer, the mixing tank is provided with a dynamic mixer, and the static mixer is connected with the dynamic mixer. A gas outlet of the mixing tank is sequentially provided with a first-stage buffer tank, a second-stage buffer tank, a third-stage buffer tank and a first gas storage chamber in the gas conveying direction, and efficient mixing of gas is achieved through a static mixer and a dynamic mixer. The static mixer utilizes a spiral structure to generate rotation and turbulent flow to promote uniform mixing of gas; under the condition that the gas flow speed is lower or the gas types are more, the dynamic mixer is provided with an electric stirring blade, the mixing uniformity is further improved through mechanical stirring, the gas enters the buffer tank after being mixed through the arrangement of the multi-stage buffer tank, the pressure fluctuation is reduced, and the flow speed is homogenized. And the repeated diffusion and distribution process in the buffer tank improves the mixing uniformity of the gas.

An apparatus and method for determining the presence of a disease by analyzing a specimen by providing a vial partially containing the specimen and partially containing a headspace above the specimen, injecting an inert gas into the specimen in the vial to cause bubbling of the gas throughout at least a portion of the specimen such that the gas mixes with volatile organic compounds (VOCs) present in the specimen to create a VOC / gas mixture that is released into the headspace, collecting the VOC / gas mixture from the headspace in the vial, supplying the VOC / gas mixture to a chamber within the apparatus, causing the VOC / gas mixture to pass over a sensor array in proximity to the chamber, the sensor array generating an electrical signal as a function of VOCs detected in the VOC / gas mixture, and processing the electrical signal to determine the presence of a disease in the specimen.

The present disclosure provides a non-condensable gas reduction system that reduces the effects of atmospheric components contained in gas that is reduced in the reduction well. [Solution] A non-condensable gas reduction system in a geothermal power plant returns non-condensable gas that remains uncondensed when cooled from a first gas contained in geothermal fluid that springs from a production well to a reinjection well. The non-condensable gas reduction system comprises: a pump that pressurizes the first liquid sent to the reinjection well; an ejector that is driven by the first liquid, attracts the non-condensable gas, and discharges a second liquid that is a mixture of the first liquid and the non-condensable gas; and a gas separator connected downstream of the ejector that separates the second gas containing atmospheric components that has been mixed into the second liquid, and discharges the second gas into the atmosphere while discharging the second liquid into the reinjection well.

Disclosed are multi-cartridge hollow fiber membrane apparatuses and methods for gas separation using them. Each external pressure type membrane apparatus contains one or more series of cartridges wherein the cartridges within each series are arranged sequentially. The retentate gas generated by each preceding cartridge in the series is used as a feed gas to the next cartridge in the series, and the permeate gas generated by a cartridge following the first cartridge in the series is used as a sweep gas on the permeate side of the preceding cartridge. The multicomponent gas mixture is separated into one or more products by the method of the invention with improved product recovery and / or product purity.

The present disclosure relates generally to a system for inflating a balloon and more particularly to a system and methods by which parameters for an inflation process are defined based on design and location of a balloon. Particularly, the system is configured to, automatically or in response to a user input, execute an inflation process to facilitate providing a defined minimum amount of a lighter-than-air gas followed by one or more supplemental gases to create a mixture within the balloon. Advantageously, the system may be configured to optimize an amount of each gas injected based on a design and location of the balloon and output an interface including costs, savings, and parameters relating to the location, design, and / or gaseous mixture.

The invention belongs to the field of simulation optimization control, and particularly relates to a biomass gas blending combustion parameter optimization simulation control system based on combustion product prediction, and the system comprises an acquisition module which carries out data preprocessing based on multi-source pilot frequency sampling and through frequency division domain adaptive filtering and variable step size gradient descent optimization; the prediction module is used for predicting combustion product characteristic indexes through a mechanism and data driven double-layer fusion model; the control mapping module is used for obtaining a boiler control response parameter set by adopting deep reinforcement learning strategy network analysis under multi-target constraint; and the simulation adjustment module is used for loading control parameters in the digital twin platform, judging deviation based on a dynamic self-adaptive threshold value and triggering closed-loop feedback adjustment. According to the method, the problems of inaccurate pollutant prediction and control lag caused by fluctuation of biomass raw materials are solved, and feed-forward accurate control and closed-loop adaptive optimization are realized.

A gas measuring device (100) for analyzing a gas mixture (310) and monitoring an environment (300) has a housing (110) for delimiting a measurement interior volume (120) and / or for separating the measurement interior volume (120) from the environment (300) containing the gas mixture (310). The housing has a gas inlet (111) and a gas outlet (112) for respective fluid-conducting connection between the measurement interior volume (120) and the environment (300), and an electrochemical gas sensor unit, which is arranged within the measurement interior volume (120), and which serves for determining a concentration of a gas fraction, in particular an oxygen fraction, contained in the gas mixture (310).The gas measuring device (100) has a heating element (220) and with an open-loop and / or closed-loop control system (230) to increase or maintain an interior temperature (TI) of the measurement interior volume (120) and settable by means of the control system (230).

The present invention discloses a hydrogen energy utilization gas blending system and a hydrogen and natural gas ratio control method, which relates to the field of renewable energy utilization. The source hydrogen enters the gas mixing pipeline through an inlet ball valve, a pneumatic shut-off valve, and a filter, and the hydrogen flow is measured by a flow meter. The hydrogen dosage is adjusted by a regulating valve and then enters the gas mixing device through an outlet ball valve; the source natural gas enters the gas mixing pipeline through an inlet ball valve, a filter shut-off valve, and after pressure regulation and metering, it passes through a regulating valve to the outlet ball valve and enters the gas mixing device; the detection equipment at the gas mixing outlet controls the opening of the regulating valve on the natural gas and hydrogen pipelines together with the flow value after temperature and pressure compensation, controls the hydrogen volume flow, performs online adjustment and automatic following of the hydrogenation amount, and realizes the ratio of natural gas and hydrogen. The present invention realizes a stable gas mixing ratio of the two gases and high mixing accuracy. The equipment is skid-mounted as a whole, and an external stainless steel box with insulation and silencer functions is installed. The equipment is compact and beautiful, and is easy to install and move.

The method is for producing para-xylene using, as a main raw material, a mixed gas of carbon dioxide or carbon monoxide or both thereof and hydrogen. The method including: a reaction step of bringing a raw material mixed gas including the mixed gas into contact with a reaction catalyst under high temperature and high pressure to cause a reaction, to thereby obtain a product gas mixture containing para-xylene; a separation step of cooling the product gas mixture obtained in the reaction step to condense a high boiling point component, to thereby separate the product gas mixture into a water phase containing a water-soluble component, an oil phase containing a xylene mixture, and a gas phase containing an unreacted gas; and a circulation step of mixing at least part of the gas phase having been separated in the separation step into the raw material mixed gas.

An ironmaking method comprising the production of hot metal (2) and of a blast furnace top gas (10), the method comprising the steps of capturing at least a part of the top gas (10), separating CO2 from the captured top gas (10) so as to produce a CO2-rich stream (12) and a CO2-lean stream (11), mixing the CO2-rich stream (12) with a H2 makeup stream (30) and subjecting the obtained CO2 / H2 gas mixture to a reverse water gas shift reaction in a reactor (3) to produce a reducing stream (13) comprising CO and H2, separating H2 from the reducing stream to produce a CO- rich stream (14) and an H2-rich stream (15), mixing the H2-rich stream (15) with the CO2-rich stream (12) or with the CO2 / H2 gas mixture in the reactor (3) and subjecting the obtained gas mixture to the reverse water gas shift reaction and feeding at least a portion of the CO-rich stream 14 (13) to at least one chemical or biochemical plant (4) to produce one or more chemical products (16).

To provide a combustion system capable of suppressing emission of greenhouse effect gas caused by mixed combustion of combustion supporting fuel with mixed gas containing inert gas and hydrocarbon gas while suppressing atmospheric emission of hydrocarbon gas.SOLUTION: A combustion system 1 includes: a membrane separation device 3 that generates process gas Gp obtained by separating at least part of nitrogen gas Gn from mixed gas Gm by using a separation membrane; a boiler 19 capable of burning at least any of methane gas Gh, the mixed gas Gm and the process gas Gp; and a mixed gas control section 6 that controls supply of the mixed gas Gm to the membrane separation device 3. When inert gas ratio determination means 9 determines a ratio is larger than a first threshold value, the mixed gas control section 6 supplies the mixed gas Gm from a mixed gas line 2 to the membrane separation device 3.SELECTED DRAWING: Figure 1

The invention provides an efficient gas mixer and method for nitrogen-free combustion of a steam-injection boiler, a gas mixture comprises a support, a premixer and a main mixer, the premixer and the main mixer are both arranged on the support, one end of the premixer is communicated with an oxygen inlet pipe and a carbon dioxide inlet pipe respectively, the other end of the premixer is provided with a gas distributor, and the gas distributor is communicated with the main mixer. The gas distributor is communicated with a main mixer, and the main mixer is communicated with a gas collector. According to the premixer, the oblique angle is adopted to change the flow direction of gas, so that carbon dioxide and oxygen flow oppositely after passing through the oblique angle and are in a turbulent flow state in the premixer, and the purpose of premixing is achieved. The inner part of the main mixer adopts a corrugated sheet type, and the zigzag corrugated sheet can change the flow direction of the gas for multiple times and increase the turbulence of the gas, so that the carbon dioxide and the oxygen are further uniformly mixed; the gas collector collects uniformly fed mixed gas and sends the mixed gas to the outlet pipe of the mixer, and meanwhile, the flat plate of the collector supports the corrugated sheet to prevent the corrugated sheet from being blown into the outlet pipe of the mixer by the gas to cause blockage.

The invention discloses a hydrogen concentration measurement method based on a multi-mode sensor, and relates to the technical field of gas detection and industrial process safety monitoring. Hydrogen sensors based on different physical principles are introduced in the same measurement link, and environmental variables such as temperature, humidity, pressure and the like and sensor output are collected together; a multi-dimensional feature is formed after normalization and time alignment, and then fusion is performed by using a weight adaptive to the change of an environment, so that instantaneous errors generated by a single sensor due to temperature drift, wet drift or pressure fluctuation are shared or suppressed, and the stability and repeatability of a fusion result are improved; furthermore, a cross sensitivity compensation module arranged before fusion identifies response differences between hydrogen and interference components such as carbon monoxide and methane by using a machine learning model obtained by training under a multi-gas mixing working condition, and the probability of false signals and false alarms caused by coexisting gas is reduced on the premise that a special detection channel is not added.

In embodiments disclosed herein, a method for calibrating a photonic sensor includes collecting a plurality of concentration measurements with a photonic sensor with a plurality of different reference gas mixtures under various temperature and pressure environments, where each reference gas mixture includes a known species concentration, and implementing a parameter optimization routine to minimize deviations between the known species concentrations and the plurality of concentration measurements obtained by the photonic sensor, where the optimization routine generates one or more calibration constants. In an embodiment, the method may further include integrating the one or more calibration constants into a modified concentration formula, and storing the modified concentration formula in a controller used to operate the photonic sensor.

The invention discloses a field high-sensitivity CO2 concentration detection device and a fault self-diagnosis method thereof.A shell of the device is internally divided into an air inlet chamber, a concentration quantitative control chamber, a two-stage gas mixing chamber and a detection chamber through wallboards, and a CO2 concentration quantitative control assembly capable of adjusting air into the required CO2 concentration is arranged in the concentration quantitative control chamber; the electrochemical CO2 sensor detects compressed air, the temperature sensor detects the temperature of the head of the front end of the cigarette incense for calibration, the rechargeable lighter ignites the cigarette incense for calibration to generate CO2, and the steering engine drives the cutter to cut off the head of the front end of the cigarette incense for calibration; a CO2 concentration calibration value is obtained in the calibration stage, the CO2 concentration of the gas for self-inspection is obtained when self-inspection is executed, the CO2 concentration of the gas for self-inspection is compared with the CO2 concentration calibration value, and whether a fault exists or not is judged; when the detection device works normally, the electrochemical CO2 sensor collects the CO2 concentration of the air to be detected; the CO2 diffusion rate and density are enhanced by using pressure so as to improve the response current of the electrochemical sensor and improve the detection sensitivity.

Sensor system (10) for air conditioning at least one display case (V) by means of at least one controlled circulation system (10; 10') for a gas mixture (L) located in the interior of the display case (V), in particular in a display case element (SK) of the display case (V), wherein the respective circulation system (10) has at least the following components: a filter device (12) with a humidity-regulating agent, and a circulation drive (P), wherein the components (12; P) are connected together with the interior of the display case (V) by means of gas-tight connecting elements to form at least one circuit (KL) in which the gas mixture (L) circulates in order to stabilize the humidity of the gas mixture (L) by means of the filter device (12) and to filter out impurities from the gas mixture (L); wherein the sensor system (11) comprises a plurality of sensors and is connected to a control device (13) for controlling the circulation system (10), in particular the circulation drive (P), in order to measure parameters to be controlled or monitored for the control device (13); characterized in that at least two sensors (111, 112) are integrated in the sensor system (11), which sensors are arranged at the same location on or in the interior of the display case (V) and record parameters relating to at least the humidity and the contamination of the gas mixture (L) as input signals for the control device (13) in order to control the circulation drive (P) depending on the recorded parameters.

A method for determining the hydrogen concentration (CH2) in an anode (6) of at least one fuel cell (4) comprises: (A) repeatedly measuring the electric current (i) output by the at least one fuel cell (4) and providing a plurality of current measurement values (i(t)); (B) repeatedly measuring the hydrogen concentration (kH2) in a gas mixture (26, 28) which flows out of a purge valve (20) which is arranged at an outlet (9) of the at least one fuel cell (20), and providing a plurality of hydrogen concentration measurement values (kH2(t)); (C) calculating relative current measurement values (irel(t)) from the measured current measurement values (i(t)) and calculating relative hydrogen concentration measurement values (krel(t)) from the measured hydrogen concentration measurement values (kH2(t)); (D) determining scaled current measurement values (iscal(t)) by multiplying the relative current measurement values (irel(t)) by a current scaling factor (gi) and determining scaled hydrogen concentration measurement values (kscal(t)) by multiplying the relative hydrogen concentration measurement values (krel(t)) by a hydrogen concentration scaling factor (gH2); (E) forming difference values (diff(t)) from the scaled current measurement values (iscal(t)) and the scaled hydrogen concentration measurement values (kscal(t)); (F) integrating or summing the difference values (diff(t)) over time (t); and (G) adding a bias value (GH2) to the integral D(T) or to the sum D(T) of the difference values (diff(t)).

The application discloses a coal-based solid waste disposal system and method for chemical looping combustion coupled with lignite boiler peak shaving, and the system comprises an electrolytic water device, an air reactor, a fuel reactor, a gas mixer, a condenser, a semi-gasification stable combustion burner and a boiler body, etc.; the method utilizes the redundant power generation of wind power generation and photovoltaic power generation to electrolyze water in the electrolytic water device; H2 is introduced into the fuel reactor to react, so that the oxide carrier is reduced into a metal carrier, and water vapor is generated; the metal carrier in the air reactor is subjected to an oxidation reaction with air, so that the metal oxide is generated and a large amount of fuel is released; the gasification background gas is introduced into the air reactor to be preheated, and then is mixed with the water vapor generated in the fuel reactor, and finally the semi-coke powder in the semi-coke powder system is introduced into the semi-gasification stable combustion burner, and then is introduced into the furnace through the stable combustion burner nozzle to be stably combusted; part of the water vapor generated in the fuel reactor is introduced into the condenser to be condensed, so that condensed water is obtained.

A method of hydrogen (H2) storage and withdrawal is described. The method includes injecting a fluid stream into a subsurface formation via an injection well to form a composition containing a gas-phase mixture, a first liquid-phase mixture, and a solid matrix, injecting a H2-containing gas stream into the subsurface formation via the injection well to form a first gas mixture containing H2 gas, heating and pressurizing the subsurface formation containing the first gas mixture via at least one heat well to achieve a storage condition and maintaining the storage condition to store the H2 in the subsurface formation, injecting a CH4-containing gas stream into the subsurface formation via the at least one injection well to form a second gas mixture, withdrawing the second gas mixture via at least one production well, and introducing the second gas mixture into a hydrogen purification device including hydrogen-selective membranes.

A method of safely mixing a hydrocarbon with an oxidant is provided. The hydrocarbon and oxidant are saturated with a non-flammable liquid in pre-mix zones that are flooded with the non-flammable liquid and fluidly connected to a common mixing zone that is partially flooded with the non-flammable liquid. The saturated hydrocarbon and oxidant combine within the common mixing zone forming bubbles of a homogeneous gas mixture of hydrocarbon and oxidant, preferably in a ratio of hydrocarbon to oxidant that is outside of the flammability limit, that can exit the non-flammable liquid into a headspace where it can be retrieved for use in an oxidative reaction process such as oxidative dehydrogenation.

The utility model relates to a hookah main machine with a reinforced atomization air channel and an electronic hookah. The hookah main machine specifically comprises a main machine body. The main machine is provided with a heating part, a second air inlet hole, an air outlet hole, a cavity used for containing tobacco materials and a heating part used for heating the tobacco materials. The second air inlet hole is communicated with the cavity and the air outlet hole to form the second air channel; wherein the number of the second air inlet holes is at least one; the second air inlet holes are formed in the periphery of the cavity; and when air is exhausted through the air outlet hole, external unheated air enters through the second air inlet hole, is mixed with the heated air around the cavity and is exhausted from the air outlet hole. By means of the second air inlet holes, the problems that tobacco materials in the tobacco bowl are only far away from the surface of the tobacco bowl and make contact with outside air, the air in the tobacco bowl is difficult to evenly enter the tobacco materials, the tobacco materials are not completely burnt, and the atomization effect of the tobacco materials is poor are solved, and it is ensured that cold air and heated gas of the tobacco materials are convectively atomized in the using process and are discharged from the air outlet holes.

In embodiments disclosed herein, a method for calibrating a photonic sensor includes collecting a plurality of concentration measurements with a photonic sensor with a plurality of different reference gas mixtures under various temperature and pressure environments, where each reference gas mixture includes a known species concentration, and implementing a parameter optimization routine to minimize deviations between the known species concentrations and the plurality of concentration measurements obtained by the photonic sensor, where the optimization routine generates one or more calibration constants. In an embodiment, the method may further include integrating the one or more calibration constants into a modified concentration formula, and storing the modified concentration formula in a controller used to operate the photonic sensor.

The invention relates to a method for depositing a two-dimensional layer on at least one substrate of a CVD reactor, in which a process gas is fed by means of a feed line into a gas distribution chamber of a gas inlet device having a first gas distribution chamber and at least one second gas distribution chamber, and in which the substrate is brought to a process temperature by means of a heating device. In a first step, an inert gas or a diluent gas is fed into a first gas distribution chamber, and a reactive gas is fed into a second gas distribution chamber, the reactive gas is pyrolytically decomposed in a processing chamber, the decomposition product forms a two-dimensional first layer, in a second step, a second layer is deposited above and / or next to the first layer, an inert gas or a diluent gas is fed into the second gas distribution chamber and a reactive gas containing elements of the two-dimensional second layer is fed into the first gas distribution chamber, the reactive gas or gas mixture being decomposed in the process chamber, the decomposition product forming the two-dimensional second layer.

In a method for producing ammonia synthesis gas, a gas mixture containing hydrogen, argon, carbon monoxide, carbon dioxide and methane is derived from a reformer (R) in combination with a combustion unit (H), said mixture (1) being treated in order to remove its contained carbon dioxide, then cooled (3, 5) and separated in a cryogenic separation unit in an adiabatic chamber (CB), the mixture is separated in order to provide a liquid (21) which has been purified with carbon monoxide and / or methane, said liquid (21) being vaporized and fed as fuel to a combustion unit (H).

The utility model discloses a preparation system of oxygen-deficient nitrogen, which comprises a buffer tank as an oxygen-deficient nitrogen tank; a gas inlet of the buffer tank is connected with a gas mixer, a high-purity nitrogen inlet pipe and a compressed air inlet pipe are respectively connected with a gas inlet of the gas mixer, and the two gases enter the oxygen-poor nitrogen tank after being mixed in the gas mixer. According to the oxygen-deficient nitrogen preparation system provided by the utility model, high-purity nitrogen and compressed air provided by a chemical industry park can be used as raw material gases, and the high-purity nitrogen and the compressed air respectively enter the gas mixer in proportion to be mixed and then enter the oxygen-deficient nitrogen tank, so that the oxygen-deficient nitrogen with required concentration is continuously provided for production.

A method for the generation of a gas mixture including carbon monoxide, carbon dioxide and optionally hydrogen for use in hydroformylation plants or in carbonylation plants, including mixing an optional steam with carbon dioxide in the desired molar ratio, feeding the resulting gas to a solid oxide electrolysis cell (SOEC) or an SOEC stack at a sufficient temperature for the cell or cell stack to operate while effecting a partial conversion of carbon dioxide to carbon monoxide and optionally of steam to hydrogen, removing some or all the remaining steam from the raw product gas stream by cooling the raw product gas stream and separating the remaining product gas from a liquid, and using the gas mixture containing CO and CO2 for liquid phase synthesis reactions utilizing carbon monoxide as one of the reactants while recycling CO2 to the SOEC or SOEC stack.

A system for determining a gas flow in a gas delivery arrangement includes a data processing device, a flow meter detecting a flow of a gas mixture of a gas compound and an impurity gas compound, wherein the flow meter provides gas mixture flow information to the data processing device, a first compound concentration analyzer calibrated to a first impurity gas compound and detecting a concentration of the first impurity gas compound in the gas mixture, wherein the first compound concentration analyzer provides a first impurity concentration information based on the detected concentration to the data processing device, wherein the data processing device determines a target gas compound flow based on the gas mixture flow information received from the flow meter and the first impurity concentration information received from the first compound concentration analyzer.

The present invention discloses a household fumigator, which relates to the technical field of household kitchen appliances. The smoke storage chamber is provided with a combustion chamber that is connected to the smoke storage chamber, and the smoke gas generated by the combustion of the smoke material in the combustion chamber enters the smoke storage chamber; an air guide chamber is provided with an air blowing assembly; and a smoke mixing section is provided with a smoke inlet pipe connected to the smoke storage chamber, an air guide pipe connected to the air guide chamber, and a smoke exhaust pipe connected to the smoke duct; when the gas from the air blowing assembly is blown out from the air guide pipe, the smoke gas in the smoke storage chamber enters the smoke mixing section through the smoke inlet pipe and is blown out to the smoke exhaust pipe along with the gas. According to the household fumigator of the present invention, the smoke storage chamber and the air guide chamber are independently provided, and the airflow of the air blowing assembly and the smoke gas from the smoke storage chamber converge into the smoke mixing section. The siphon principle is used to mix the airflow with the smoke gas and then pass it into the smoke duct. This effectively prevents the smoke gas from corroding and damaging the air blowing assembly, thereby improving the service life of the equipment.

The application discloses an ozone micro-nano bubble generating device and a control method for the field of deodorization, relates to the technical field of industrial wastewater treatment, and comprises a water tank, a plurality of micro-nano bubble release heads, a plurality of circulating water pumps, an ozone generating assembly and a control module; the plurality of micro-nano bubble release heads are arranged in a plurality of mounting holes; the plurality of circulating water pumps are arranged on a plurality of water pump mounting positions, water inlets of the plurality of circulating water pumps are connected with the inside of the water tank through water inlet pipelines respectively, and water outlets are connected with the micro-nano bubble release heads through gas mixing pipelines respectively; the ozone generating assembly is connected with the plurality of gas mixing pipelines respectively; and the control module is connected with the plurality of circulating water pumps and the ozone generating assembly respectively. The application provides a device and a control method which are simple in structure, strong in controllability of parameters, capable of stably realizing high-concentration ozone micro-nano bubble production, and designed in a modular way of 'one-to-one pump-release head' and combined with a simple control logic based on the number of opened pumps.

The application provides a cooling device of a cloth bag dust collector and belongs to the technical field of cloth bag dust collectors. The cooling device of the cloth bag dust collector comprises a base and a dust collector body, the dust collector body is fixedly connected to the base, the lower end of the dust collector is provided with an air inlet pipeline, the upper end of the dust collector body is provided with an air outlet pipeline, the base is fixedly connected with a cooling box, the cooling box is provided with a conveying channel, one side of the cooling box is fixedly connected with a gas feeding pipe, the gas feeding pipe is communicated with one end of the conveying channel, the other end of the conveying channel penetrates through the side wall of the cooling box and is communicated with the other end of the air inlet pipeline, and the dust collector body is provided with a sealing assembly capable of sealing the other end of the air inlet pipeline. The application has the advantages that the conveying channel is a multi-section U-shaped pipe, the dust-containing gas has a longer cooling time in the cooling box, and the cooling effect is better; and the cooling air of the cooling fan is mixed with the dust-containing gas through the fan blades, so that the temperature of the dust-containing gas is reduced.