63results about How to "Improve gasification efficiency" patented technology

The invention discloses a coal underground gasification mining front and rear furnace common well continuous coordination propulsion method which comprises the following steps: S1, constructing a gas inlet well and a gas outlet well of a first furnace, and performing gas injection fracturing on a gasification to-be-mined area of the first furnace by using the gas outlet well; s2, coal seam combustion gasification operation is conducted on the gasification to-be-mined area of the first furnace, and synthesis gas is collected through a gas outlet well of the first furnace; meanwhile, a gas outlet well of the second furnace is used for conducting gas injection fracturing on the gasification to-be-mined area of the second furnace; s3, the combustion space area of the first furnace is made to be idle for cooling, meanwhile, the second furnace conducts combustion gasification operation, and the third furnace conducts gas injection fracturing operation; each furnace is subjected to a flow process of gas injection fracturing, combustion gasification, idle cooling and CO2 storage well closing treatment; and S4, completing each flow process in sequence. The upper furnace and the lower furnace carry out difference node follow-up according to the flow process by one flow node, the upper furnace and the lower furnace carry out well sharing, the number of drilled wells is reduced, geological damage is relieved, and the mining efficiency is improved.

The invention discloses a coal underground efficient gasification method based on calcium-based catalyst injection and a carbon dioxide geological storage method. The calcium-based powder material adopts high-purity limestone, wherein the content of calcium oxide is greater than 50%. The method comprises the following steps: crushing a limestone raw material into micron-scale to nano-scale powder, putting the powder into a stirring device, mixing the powder with a coal underground gasification injection agent to obtain a suspension fluid, and injecting the suspension fluid into a coal underground gasification furnace which is in production; calcite minerals in limestone are decomposed into calcium oxide under the coal underground gasification high-temperature effect, and the calcium oxide adsorbs water and carbon dioxide to the surface of coal coke to generate a synergistic gasification reaction at the same time. Wherein the injectant and the calcium-based powder suspension fluid are prepared by adopting a foam suspension device provided with an ultrasonic generator, so that the suspension stability of the calcium-based powder in the suspension fluid is improved. According to the invention, the calcium-based material is injected into the coal underground gasification furnace as the catalyst, so that the moisture, carbon dioxide and carbon in the coal are subjected to co-gasification reaction, the coal underground gasification reaction rate and gasification efficiency can be obviously improved, the environmental pollution is reduced, and the maximum utilization of resources is realized.

The calcining furnace comprises a machine table and a furnace body, a flue gas purification mechanism is installed at the top of the machine table, a top plate is installed at the top of the flue gas purification mechanism, an oxygen supply device and a smashing and stirring mechanism are arranged at the top of the top plate, a calcining rack is arranged at one end of the furnace body in a sealing fit mode, and the calcining rack is arranged at the other end of the furnace body. An L-shaped bracket is mounted at the bottom of one end of the machine table, and a flue gas purification mechanism is arranged in the machine table; through the smashing and stirring mechanism and the smashing type calcining structure of the calcining rack in the furnace body, materials needing to be calcined and processed are uniformly placed in the discharging groove to be processed, a material collecting structure of the discharging groove is conveniently utilized, unfolding and sealing are convenient, the processed materials are conveniently and uniformly collected and crushed, and the processing efficiency is improved. The limitation and inconvenience that materials are scattered and are difficult to take out are abandoned, rapid cooling and discharging are facilitated under the condition that the structure is actively pulled out from the interior of the furnace body, and the working efficiency of antimony trioxide processing and production is greatly improved.

The invention discloses a coal underground combustion gasification and carbon dioxide sequestration mining treatment method. The method comprises the steps that S1, gas injection fracturing is conducted, specifically, fracturing gas is introduced through a gas outlet well to enable a coal seam corresponding to a gasification to-be-mined area to form a fracturing seam net; s2, combustion gasification: taking the bottom end of a gas inlet shaft of the furnace to mountain gas and the bottom end as a mining direction, discharging gas from the furnace, and discharging synthesis gas; and S3, sealing and closing the well: injecting carbon dioxide serving as displacement gas into the space to be sealed through the gas inlet well, collecting mixed gas through the gas outlet well, and then injecting high-pressure CO2 gas into the space to be sealed for sealing treatment. According to gas injection fracturing of a single furnace, a horizontal fracturing gas injection channel is adopted for carrying out gas injection fracturing treatment on the gasification to-be-mined area of the furnace located above to form a fracturing crack net, the upper furnace well and the lower furnace well can be jointly subjected to difference node follow-up according to the flow process and the difference of one flow node, and the sealing difficulty of the well and a combustion space area is reduced; and the mining efficiency is improved.

The invention is suitable for the technical field of coal, and provides a high alkali metal coal slag adhering method, which comprises the following steps: step 1, analyzing the occurrence form and content of alkali metal: firstly, analyzing the occurrence form and content of alkali metal in coal, including four forms of water-soluble alkali metal, ammonium acetate solubility, diluted hydrochloric acid solubility and insoluble alkali metal, according to the invention, the slag adhering problem of the high alkali metal coal is reduced, the combustion efficiency and environmental protection property of the coal are improved, the combustion and gasification efficiency of the coal is improved, the environmental pollution is reduced, through reasonable coal blending, the utilization efficiency of coal resources is improved, the production cost is reduced, the low alkali coal can be effectively utilized to improve the combustion characteristics of the high alkali coal, and the slag-bonding and contamination problems of a boiler are reduced; meanwhile, safe and economical operation of the boiler is guaranteed, the components of the coal ash can be effectively regulated and controlled, the utilization value of the coal ash is improved, the environmental influence is reduced, cyclic utilization of resources is achieved, and the slag adhering phenomenon of the high alkali metal coal in the combustion and gasification process can be more accurately predicted and controlled, so that effective prevention and solution measures are taken.

The invention relates to the technical field of ion implantation, and discloses a method for implanting organic functional group ions into magnesium alloy, which comprises the following steps: preparing a magnesium alloy sample; surface pretreatment: coating a PLGA solution on the sample, and naturally drying to form a PLGA coating; fixing the sample on ion implantation equipment and then vacuumizing; precursor gas preparation: gasifying imidazole and conveying the gasified imidazole to an ion source area; ionizing the imidazole; the imidazole ions are accelerated to 80keV energy; ions are injected according to the injection dose of 1 * 1017 ions / cm < 2 > and the beam density of 1 [mu] A / cm < 2 >, and the injection depth is about 100 nm; and annealing treatment is conducted, and after annealing is finished, natural cooling is conducted to room temperature. The PLGA coating is coated on the surface of the magnesium alloy, so that the corrosion resistance and the biocompatibility of the magnesium alloy can be effectively improved, and the application range of the magnesium alloy in the field of biomedicine is expanded.

The invention provides a biomass pyrolysis purification coupling reactor and a biomass pyrolysis method, and relates to the technical field of biomass pyrolysis gasification, the biomass pyrolysis purification coupling reactor comprises a fluidized bed reactor, a coupling purification separation assembly and a particle lifting conveying unit, the fluidized bed reactor comprises a reactor shell, a feed port and a gas distributor, the coupling purification and separation assembly comprises a cyclone separator, a built-in particle bed, a central exhaust pipe, a storage tank and a discharge structure, and the particle lifting and conveying unit is communicated with the dense-phase section and the storage tank. And the particle lifting and conveying unit is used for lifting and conveying pyrolysis products in the dense-phase section into the storage tank. The coke generated in the biomass pyrolysis process is used as the bed material of the built-in particle bed, so that not only is the recycling of solid-phase particles realized, but also the filtering and purifying capability and carrying heat of the particles are fully utilized.

The utility model discloses a liquid chlorine gasifier for chemical production, which comprises a main body module, the main body module comprises a barrel, a liquid inlet pipeline mounted on one side of the barrel and communicated with an inner cavity of the barrel, an exhaust pipe mounted on one side of the barrel and communicated with the inner cavity of the barrel, a bottom shell fixed at the bottom end of the barrel, and a top shell fixed at the top end of the barrel; the heat exchange pipes are installed in an inner cavity of the barrel in an annular array mode, the two ends of each heat exchange pipe extend out of the barrel to communicate with the bottom shell and the top shell correspondingly, the box body is fixed to one side of the barrel through a support, the pump machine is installed at the bottom end of the box body, and the temperature control assembly is installed on the box body and extends into an inner cavity of the box body. The liquid chlorine gasifier for chemical production has the advantages that the liquid chlorine gasifier is high in gasification efficiency and high in practicability, gasified chlorine is prevented from seeping out, the barrel is composed of an outer-layer shell, a middle-layer shell fixed to the inner side of the outer-layer shell and an inner-layer shell fixed to the inner side of the middle-layer shell, and the liquid chlorine gasifier for chemical production has the advantages of being high in gasification efficiency and high in practicability.

The invention provides a waste tire circulating fluidized bed pyrolysis method and system.The method comprises the steps that broken raw materials are taken and enter a fluidized bed pyrolysis furnace, and large-particle carbon black, small-particle carbon black and mixed gas are obtained; the large-particle carbon black and the small-particle carbon black are used as heat carriers for circulation; carrying out gas-liquid separation treatment on the mixed gas to obtain an oil-water mixture and pyrolysis gas, and carrying out oil-water separation treatment on the oil-water mixture to obtain pyrolysis oil and circulating water; pyrolysis oil is processed to obtain an oil product, pyrolysis gas is subjected to high-temperature treatment to obtain first hot flue gas, one part of the first hot flue gas serves as hot carrier gas to be circulated, the other part of the first hot flue gas enters a waste heat boiler to obtain second hot flue gas and a steam product, and the second hot flue gas is purified to obtain purified flue gas. According to the method, solid and gas double circulation is adopted, and high gasification efficiency and low energy consumption are achieved.

The utility model discloses a steam composite air bath type gasification device which comprises a first finned tube, a second finned tube, a rear end finned tube, a first three-way valve, a second three-way valve, a water bath heater, a liquid inlet tube and a gas outlet tube. An inlet of the first finned tube is connected with the liquid inlet tube, an inlet of the second finned tube is connected with the liquid inlet tube, a heating inlet of the water bath heater is connected with the liquid inlet tube, and the second three-way valve is connected with an inlet of the first finned tube, an inlet of the second finned tube and a heating outlet of the water bath heater. Outlets of the first finned tube and the second finned tube are connected with an inlet of the rear-end finned tube, and an outlet of the rear-end finned tube is connected with the gas outlet tube. According to the utility model, the efficiency and the yield of the vaporizer can be improved, and the defrosting on the surface of the heat exchange finned tube is realized and the efficiency of the vaporizer is improved by switching the working valves under the condition that the vaporization amount of the device is not changed.

The application relates to a biomass gasification device and relates to the technical field of biomass gasification, which comprises a gasification hearth, a fluidized bed is arranged in the gasification hearth, a bubbling bed is arranged in the gasification hearth, a biomass gasification area is arranged between the bubbling bed and the fluidized bed, and the biomass gasification area is used for making biomass stack combustion; the bubbling bed is located at the upper end of the biomass gasification area, a feeding device is arranged on the gasification hearth, an air inlet pipe is arranged on the gasification hearth, the air inlet pipe is used for blowing air into the fluidized bed, the air inlet pipe is used for making fuel in the biomass gasification area tumble, the air inlet pipe is used for blowing the fuel which is not fully combusted on the fluidized bed to the bubbling bed, a cyclone separator is arranged on the upper portion of the gasification hearth, the cyclone separator outputs relatively clean combustible gas after carrying out gas-solid separation on dust-containing combustible gas, the cyclone separator is used for inputting the fuel which is not fully combusted into the bubbling bed, and an ignition device is arranged on the bubbling bed and the fluidized bed. The application has the effect of fully gasifying biomass fuel.

The invention relates to a furfural hydrogenation reaction system and a reaction method. The system comprises a gas phase raw material storage tank and a hydrogen storage tank. The gas phase raw material storage tank and the hydrogen storage tank are connected to the tube side of a suspended bed tubular reactor through a feeding unit. The shell side of the suspended bed tubular reactor is connected to a heat removal unit. The tube side outlet of the suspended bed tubular reactor is connected to a product separation tank through a heat exchange device. The liquid phase outlet of the product separation tank is connected to a product tank. The system has the characteristics of simple structure, reasonable design, and can not only improve heat exchange efficiency, but also can timely remove reaction heat, which is beneficial to the stable operation of the hydrogenation reaction.

The present application relates to solid waste treatment technical field, provide a kind of preparation syngas method and device using organic dangerous waste and biomass.The present application uses organic dangerous waste and biomass as raw material, preparation syngas by self-heating type gas flow bed.The present application will be organic dangerous waste slurry and biomass-based powder respectively feed, can realize the feed adjustment of arbitrary ratio, organic dangerous waste processing capacity, gasification efficiency is high, carbon emission is low;While this feeding mode can realize the independent atomization of organic dangerous waste slurry and biomass-based powder, also has the coupling effect of reaction, can improve gasification efficiency and the content of effective component in syngas.Summarized above, the present application uses organic dangerous waste and biomass to prepare syngas, can realize the efficient treatment and resource utilization of organic dangerous waste and biomass simultaneously, reduce fossil energy consumption, while carbon emission is less, environmental pollution is small, the obtained syngas can be used to prepare a variety of high value-added products, with remarkable environmental and economic benefits, wide application prospect.

The invention provides a Fischer-Tropsch wax residue treatment method and coal water slurry. The treatment method comprises the following steps: S1, mixing Fischer-Tropsch residue wax, a coal water slurry additive, a suspending agent and water, and carrying out first grinding to obtain a first suspension; s2, carrying out solid-liquid separation on the first suspension liquid by adopting a magnetic separation method to obtain a second suspension liquid and solid powder; and S3, mixing the second suspension with coal, and carrying out second grinding to obtain the coal water slurry. By applying the technical scheme provided by the invention, the treatment problem of the Fischer-Tropsch wax residue can be solved on a large scale, and the technical problems of high slurry viscosity and low slurry concentration after the wax residue and coal are mixed are solved by carrying out wet grinding on the coal water slurry additive, the suspending agent and the wax residue and then carrying out magnetic separation; and after the suspending agent and the magnetic separator are introduced, the separation efficiency of the wax and the iron-based catalyst in the wax residue can be greatly improved, the wax in the wax residue can be effectively utilized to produce raw gas, and the separated and enriched Fischer-Tropsch iron-based catalyst can also be used as a steel-making raw material in a steel plant.

This utility model discloses a control device for effectively reacting with industrial gases, relating to the field of sand casting technology, and solving the problem of the inability to continuously supply triethylamine gas in existing systems. It includes a storage tank, an electrical control cabinet, and heaters. The outlet pipe of the storage tank is connected to a pump body, and the output end of the pump body is connected to two inlet pipes via a three-way connector. Each inlet pipe is equipped with a check valve and a flow meter sequentially along the liquid flow direction. There are two heaters, each including a heating chamber containing multiple longitudinally arranged heat-conducting pipes. Each heat-conducting pipe contains a heating rod, and a spiral tube is wound around the outside of the heat-conducting pipes. One end of the spiral tube corresponding to each heater extends to the bottom of the heating chamber and connects to the inlet pipe. This utility model's control device can achieve continuous output of triethylamine gas, effectively improving production efficiency.

The invention relates to the technical field of biomass fluidized beds, and discloses an internal circulation biomass fluidized bed device coupling coal-fired boiler gas supply device and method, the internal circulation biomass fluidized bed device coupling coal-fired boiler gas supply device comprises: a non-equidistant screw feeder for conveying biomass raw materials; and the output end of the non-equidistant spiral feeder is fixedly connected with the gasification furnace. According to the internal circulation biomass fluidized bed device coupling coal-fired boiler air supply device and method, the stirring device is arranged, air flows sprayed out through the oblique air spraying opening enable materials to generate rolling and fluidizing effects in a gasification furnace, the materials make more sufficient contact with the air, the reaction rate and gasification efficiency are improved, and the gasification efficiency is improved. The airflow can stir the materials, prevent the materials from accumulating or dead angles in the gasification furnace and keep the reaction environment in the gasification furnace stable, and the airflow can optimize heat transfer and material reaction and reduce energy waste, so that the efficiency and reliability of the whole system are improved.

The utility model discloses an oil sludge gasification steam generator system device, which relates to the technical field of steam generators and comprises a barrel, the top end of the barrel is fixedly connected with a feed pipe and communicated with the barrel, the top end of the barrel is further fixedly connected with an air outlet pipe and communicated with the barrel, a cleaning component is arranged in the barrel, and the cleaning component is arranged in the barrel. And the cleaning assembly comprises a hollow rod, the two ends of the hollow rod are rotationally connected with the inner walls of the two sides of the cylinder body, a plurality of liquid outlets are formed in the surface of the hollow rod, the multiple liquid outlets are arranged at equal intervals, and wiping plates are fixedly connected to the two sides of the surface of the hollow rod. According to the oil sludge cleaning device, oil sludge impurities left in equipment can be scraped and cleaned through the cleaning assembly, meanwhile, oil sludge is stirred when cleaning liquid is not poured in, the situation that the oil sludge is dried, condensed and not prone to gasification is avoided, the gasification efficiency of the equipment is greatly improved, and the effects of equipment cleaning and stirring gasification are achieved.

The utility model relates to the technical field of vaporizer defrosting, in particular to an automatic liquid oxygen vaporizer defrosting device. The defrosting device of the automatic liquid oxygen gasifier comprises a first rolling brush, a second rolling brush and a driving mechanism. And the first rolling brush is horizontally arranged. And the second rolling brush and the first rolling brush are respectively arranged in parallel at intervals in the horizontal direction and the vertical direction. The driving mechanism is used for controlling the first rolling brush and the second rolling brush to roll and reciprocate in the vertical direction at the same time, frost and snow on the fin heat exchange tubes on the two sides are cleaned, and the moving directions of the first rolling brush and the second rolling brush in the vertical direction are always opposite. Defrosting is carried out in an alternate mode, the pressure on vaporizer components can be reduced, the service life of the vaporizer components is prolonged, the situation that the driving mechanism is damaged due to too large resistance when the first rolling brush and the second rolling brush roll or move up and down is avoided, and reliability is high.

The utility model provides an LNG (Liquefied Natural Gas) gasification device, which relates to the technical field of gasification devices and comprises a base, a tank body is fixedly arranged on the surface of the base, a motor is fixedly arranged on the surface of the tank body, a rotating shaft is arranged at the output end of the motor, a stirring rod is fixedly arranged on the surface of the rotating shaft, and an auger is fixedly arranged at the bottom end of the rotating shaft. A feeding pipe is fixedly installed on the surface of the tank body, an exhaust pipe is fixedly installed on the surface of the tank body, a heater is fixedly installed on the surface of the base, and a heat conduction plate is installed at the output end of the heater. By means of the design of the motor, the rotating shaft, the stirring rod and the packing auger, the effect of stirring LNG is achieved, the LNG gasification efficiency is improved, the uniformity of the LNG in the gasification process is ensured, the structure is simple, and practicability is high.

A composite gasification system of biomass pressurized fluidized bed gasification and cyclone cracking relates to the technical field of biomass gasification, and comprises a gasifier, a high-temperature cyclone cracking furnace, a heat recovery device, a cyclone separator, a high-temperature filter, a material sealing valve, a steam drum and an ash hopper; the gasifier comprises, from bottom to top, a slag discharge ring pipe, a gasifying agent nozzle, a gasifying furnace air chamber, a distribution plate, a fly ash return port II, a gasifier dense phase section, a biomass feed port, a fly ash return port I, a secondary gasifying agent nozzle and a gasifier dilute phase section, the slag discharge ring pipe is used to discharge ash in the bed layer of the gasifier dense phase section, and the gasifying agent nozzle is used to spray the gasifying agent into the bed layer of the gasifier dense phase section; the solid discharge port of the high-temperature cyclone cracking furnace is connected with the solid feed port of the material sealing valve, and the composite gasification system of biomass pressurized fluidized bed gasification and cyclone cracking can shorten the gasification reaction time, greatly improve the gasification intensity of the gasifier, and generate more combustible components.

The utility model discloses an LNG gasification pressure regulating pry, which comprises a main body mechanism, a steam mechanism, a pressure regulating mechanism, a transmission mechanism, a second regulating mechanism and an automatic control mechanism, the steam mechanism is arranged at the bottom end of the main body mechanism, the pressure regulating mechanism is arranged on the main body mechanism, the transmission mechanism is arranged in the pressure regulating mechanism, and the second regulating mechanism is arranged on the transmission mechanism. The second adjusting mechanism is installed on the pressure adjusting mechanism, the automatic control mechanism is installed on the main body mechanism, LNG is gasified and stored through the main body mechanism, the gasification efficiency is improved through the steam mechanism, the pressure adjusting mechanism drives the transmission mechanism to adjust the pressure of pressure transmission, and the second adjusting mechanism adjusts the pressure stored in the main body mechanism. The automatic control mechanism facilitates automatic opening and closing. According to the utility model, the gasification efficiency can be conveniently improved, the pressure can be conveniently adjusted, and automatic gas filling can be automatically completed according to the pressure.

The warmer with the heat conduction structure comprises a gas cylinder, an ignition container and a fire grate, the gas cylinder is used for storing combustible gas, the ignition container is communicated with a gas cylinder gas path and used for igniting the combustible gas in the gas cylinder, a radiation panel is arranged on the side, away from the gas cylinder, of the fire grate, and the fire grate is arranged at the tail end of the ignition container and the tail end of the gas cylinder gas path. A heat conduction piece is arranged between the gas cylinder and the fire grate, and a heat conduction path from the fire grate to the gas cylinder is formed through the heat conduction piece. The gas cylinder has the effects of improving the gasification efficiency of liquefied gas in the gas cylinder, ensuring the combustion stability and the heating effect and saving energy.

The invention discloses a pressurized and sealed biomass gasification feeding device with a crushing function, and relates to the technical field of gasification furnace feeding, the device comprises a feeding hopper module, a first conveying cylinder, a second conveying cylinder and a connecting cylinder, the feeding hopper module is connected with the first conveying cylinder, the first conveying cylinder is connected with a sealing valve box, and the second conveying cylinder is connected with the connecting cylinder. The sealing valve box is connected with a connecting cylinder, the connecting cylinder is connected with a second conveying cylinder, the second conveying cylinder is connected with the biomass gasifier, a sealing valve is arranged in the sealing valve box, and a sealing pipeline is arranged on the side wall of the sealing valve box in a penetrating mode. In order to solve the problem of reverse channeling of synthesis gas in an existing biomass gasification feeding device, a sealing pressurization mode is adopted to seal the side end of the valve box, a strand of sealing gas is introduced and used for providing pressure for biomass feeding, and then it is guaranteed that a certain pressure exists in the biomass feeding device through the feeding sealing valve, so that the biomass gasification feeding device is stable in feeding. And reverse channeling of the synthesis gas in the gasification furnace is prevented.

The invention provides a circulating fluidized bed air gasifier low-tar biomass gas production device and a use method, the circulating fluidized bed air gasifier low-tar biomass gas production device comprises a gasifier lifting pipe, an upper outlet of the gasifier lifting pipe is connected with the top of a cyclone separator, and the bottom of the cyclone separator is connected with a U-shaped return feeder through a vertical pipe; an outlet material returning inclined pipe of the U-shaped material returning device is communicated with the lower portion of the gasification furnace lifting pipe, a catalyst opening is formed in the middle of the outlet material returning inclined pipe of the U-shaped material returning device, an outlet in the upper portion of the cyclone separator is connected with a cyclone dust collector, and an ash discharging pipe is arranged at the bottom of the cyclone dust collector. The catalyst is added to the inclined tube of the U-shaped return feeder, the catalyst, a bed material and a biomass raw material are fully mixed in a dense-phase region, the fluidization state is improved, the biomass and the catalyst are distributed at the top of the bed layer, the retention time of tar in the dense-phase region is prolonged, and thermal cracking of the tar is promoted. The temperature at the joint of the U-shaped return feeder and the riser of the gasification furnace is relatively high and is closer to the thermal cracking temperature, so that the gasification efficiency is effectively improved.

The present invention discloses an ultrafine particle gasification system and a gasification process of carbonaceous materials, wherein the gasification system comprises a raw material conveying unit, a gasification unit and a synthesis gas purification unit; the raw material conveying unit, the gasification unit and the synthesis gas purification unit are connected in sequence; the raw material conveying unit comprises a carrier gas control system and a silo, and the carrier gas control system is used to control the adding mode and flow rate of the carrier gas added to the silo; the lower end of the silo is provided with 2 to 10 layers of annular pipe branches, and each layer of annular pipe branches is evenly provided with 4 to 20 air inlets, which are used as the entrance for loading the carrier gas into the silo; the synthesis gas purification unit comprises a cyclone separator, a particle layer filter, a convection waste pot and a scrubber in sequence. The present invention further improves the efficiency of entrained flow gasification, improves the processing capacity of the gasifier, reduces the reaction temperature, prolongs the service life of the gasifier lining, and saves the operating cost.

The application discloses a device and a control method for automatic pressurization by recycling back liquid, relates to the field of LNG and energy recovery, and aims at solving the problems of high cost, high energy consumption and incapability of filling during pressurization of the existing pressurization technology. The liquid inlet of the pressurization vaporizer is connected to the back liquid pipeline of the LNG liquid filling machine and the front end liquid leading pipeline of the LNG low-temperature submerged liquid pump respectively, the temperature transmitter is used for monitoring the temperature of the gas outlet of the pressurization vaporizer, and it is selected whether the recycling back liquid is directly returned to the storage tank or is returned to the storage tank after being vaporized by the pressurization vaporizer. When the filling is continuously performed, the LNG low-temperature submerged liquid pump is used for leading the liquid to the front end of the pressurization vaporizer to be vaporized, so that the storage tank is pressurized. The application does not affect the filling operation during pressurization, and has the characteristics of low power consumption, high efficiency and low cost.

The invention relates to a heat transfer strengthening structure, a heat transfer strengthening pipe, a preheating device and application. The heat transfer strengthening structure comprises a coal water slurry pipe and at least one protrusion distributed on the inner wall of the coal water slurry pipe. The ratio of the height of the protrusions to the inner diameter of the coal water slurry pipe is (1-8): 50. The heat transfer strengthening pipe comprises the heat transfer strengthening pipe structure. The preheating device comprises a shell and the heat transfer strengthening pipe located in the shell. According to the heat transfer strengthening structure, the protrusions are arranged on the inner wall of the coal water slurry pipe and serve as inner wall face modification, blockage during flowing of the coal water slurry is prevented, and heat transfer strengthening is facilitated.

The invention relates to an industrial hydrogen chloride gas preparation device, and relates to the technical field of hydrogen chloride preparation, the industrial hydrogen chloride gas preparation device comprises a fixing frame and a reaction kettle, the reaction kettle is slidably connected to the fixing frame, the fixing frame is provided with a vibration mechanism, the vibration mechanism is connected with the reaction kettle, the reaction kettle is provided with a stirring mechanism, and the stirring mechanism is connected with the vibration mechanism. The stirring mechanism is used for stirring a solution in the reaction kettle, a sulfuric acid spray head, a hydrochloric acid spray head and a hollow support column are arranged in the reaction kettle, the sulfuric acid spray head is arranged at the upper end part of the reaction kettle, the hollow support column is arranged at the lower end part of the reaction kettle, the hydrochloric acid spray head is connected with the hollow support column, and the hydrochloric acid spray head is connected with the hollow support column. An air outlet nozzle is arranged at the upper end part of the reaction kettle, and a liquid outlet nozzle is arranged at the lower end part of the reaction kettle. The invention has the effect of avoiding the influence on the productivity of hydrogen chloride gas.

This invention discloses a long-distance pipeline coal slurry preparation system and method for gasifying coal slurry, comprising a slurry storage tank connected to the inlet of a first centrifugal pump, the outlet of the first centrifugal pump connected to the inlet of a raw coal slurry buffer tank, the raw coal slurry buffer tank connected to the inlet of a second centrifugal pump, the outlet of the second centrifugal pump connected to the inlet of a feed filter buffer tank, the feed filter buffer tank connected to a screen settling centrifuge, the centrifuged coal generated by the screen settling centrifuge falling onto a centrifugal coal scraper conveyor, the centrifugal coal scraper conveyor connected to a centrifugal coal storage yard and a centrifugal coal belt scale, the centrifugal coal belt scale connected to the inlet of a dewatered coarse coal kneader, and the dewatered coarse coal kneader connected to a low-pressure coal slurry tank. The system of this invention can simultaneously achieve efficient recovery of both coarse and fine coal slime, producing dewatered coal with low moisture content, while also concentrating and settling coal slime wastewater, reducing the load on subsequent coal slime wastewater treatment plants.

The invention provides a double-flue external heating type gasification device, which comprises a furnace body, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger, a heat exchanger and a heat exchanger, wherein an accommodating space is formed in the furnace body; the outer furnace wall is arranged on the outer side of the furnace body, and an outer flue is formed between the outer furnace wall and the furnace body; the flue gas pipeline is vertically mounted in the accommodating space, and the upper part of the flue gas pipeline is communicated with the outer flue through a pipe fitting; the flue gas supply assembly is installed below the flue gas pipeline and suitable for providing flue gas into the flue gas pipeline from the lower portion, and the flue gas rises in the flue gas pipeline and then is discharged downwards from the bottom through the outer flue through a pipe fitting. The two-way heating device can indirectly and uniformly perform two-way heating on gasification raw materials flowing downwards and gasification agents flowing upwards in the containing space, so that the gasification raw materials are subjected to gasification reaction, the temperature of the containing space is kept high in the process that flue gas is discharged through the outer flue, sufficient gasification reaction is facilitated, and the gasification efficiency is improved.