225 results about "Gas solid" patented technology

The invention discloses a coal gangue distributed homogeneous high-temperature activation calcination method and system, and relates to the technical field of resources and environments, the system comprises a coal gangue powder preparation and feeding system, a coal gangue powder distributed homogeneous high-temperature activation calcination system, a high-temperature powder cooling system, a finished product collection system and a flue gas purification system; the coal gangue powder distributed homogeneous high-temperature activation calcining system comprises a primary cyclone preheating system and a distributed homogeneous high-temperature activation furnace; the air inlet end of the primary cyclone preheating system is communicated with the coal gangue powder preparing and feeding system, the primary cyclone preheating system is communicated with the homogeneous high-temperature activation furnace, materials in the distributed homogeneous high-temperature activation furnace are separated by the gas-solid cyclone separator and then are divided into two parts by the distributor, one part enters the high-temperature powder cooling system, and the other part enters the high-temperature powder cooling system; and the other part returns to the distributed homogeneous high-temperature activation furnace for circulation. According to the method, large-scale treatment of high-temperature activation and calcination of the coal gangue is realized, and the uniformity and controllability of product quality are remarkably improved.

The application relates to a gas-solid reaction rotary furnace. The gas-solid reaction rotary furnace comprises a support frame, a base, a frame rotatably connected to the base, a first driver for driving the frame to rotate, a rotary furnace pipe arranged in the frame, the rotary furnace pipe comprising a powder inlet and outlet end and a gas inlet and outlet end, and a gas assembly arranged at the gas inlet and outlet end of the rotary furnace pipe, wherein when the gas assembly supplies gas to the rotary furnace pipe, the rotary furnace pipe can be moved to a state where the gas inlet and outlet end is higher than the powder inlet and outlet end. During operation of the gas-solid reaction rotary furnace, the rotary furnace pipe is kept in an inclined rotating state, the loading capacity of the rotary furnace pipe is increased, the production capacity of a single furnace is increased, the energy consumption of unit weight of material is reduced, and the processing time and cost are reduced.

The device is mainly used for zinc powder waste slag recycling treatment device of thermal zinc spraying, establishes an integrated waste slag treatment system, adopts high-efficiency electromagnetic induction heating technology, precise temperature control mechanism, combination design of rotary valve airlock and high-precision filter screen, breaks through the defects of low separation efficiency and gas leakage of traditional separation equipment, realizes gas-solid separation, introduces a high-temperature high-pressure reaction kettle for carbon dioxide green conversion process, and cooperatively realizes the recycling of zinc resources (recycled zinc can be directly used for thermal zinc spraying) and the environmental protection treatment of carbon dioxide (urea is generated), greatly improves the economy and sustainability.

The present application belongs to the technical field of acetylene preparation, and discloses a method and system for efficiently preparing acetylene and hydrogen from natural gas based on turbine cracking. The method comprises the following steps: obtaining 95%-100% purified methane gas through raw material pretreatment, preheating to 523-823 K, and then feeding into a turbine cracking reaction unit to be heated to 1800-2200 K within 1-10 ms and cracked for 1-10 ms; the cracked gas is quenched to below 800 K within 0.5-3 ms and the waste heat is recovered; finally, carbon black, high-purity acetylene and hydrogen are obtained through gas-solid and gas separation. The system comprises raw material pretreatment, preheating, turbine cracking reaction, quenching and waste heat recovery, gas-solid separation, gas separation units, and a matching monitoring and collaborative control module, and realizes multi-parameter collaborative control and online carbon cleaning. The present application does not introduce oxygen, the conversion rate of natural gas is 92%-95%, the acetylene yield is 83%-87.5%, the energy consumption is low, the products are easy to separate, it is green and environmentally friendly, and it is suitable for industrial continuous production.

The invention discloses a width gradient tungsten disulfide nanobelt, a preparation method thereof and an application of the width gradient tungsten disulfide nanobelt in a self-driven photoelectric detector, a Ni film is deposited on a substrate and is annealed to form catalytic particles, and a chemical vapor deposition system is utilized to accurately control the temperature gradient between tungsten trioxide in a central temperature zone and a growth substrate in a downstream temperature zone, so that the width gradient tungsten disulfide nanobelt is obtained. And the solid sulfur source is propelled at a constant rate, the dynamic change of the sulfur / tungsten atomic ratio in the reaction environment is regulated and controlled, and a growth mode is guided to be converted from a gas-liquid-solid mechanism to a gas-solid mechanism, so that controllable preparation of the tungsten disulfide nanobelt with the width continuously and progressively decreased in the axial direction is realized. The width of the nanobelt gradually changes from 150-500 nm to 50-120 nm, the length of the nanobelt reaches 3-12 [mu] m, and the nanobelt has an armchair edge and a 3R phase stacking structure. A self-driven photoelectric detector constructed based on the nanobelt realizes high-sensitivity detection of 532 nm laser under zero bias voltage, the responsivity reaches 5.04 A / W, the detectivity reaches 3.23 * 10 < 12 > Jones, and the nanobelt shows important application value in the fields of optical signal detection, optical switches and wireless optical communication.

This invention discloses a gasification reduction ironmaking system and method for the synergistic resource utilization of solid and hazardous waste and red mud. The system includes a raw material pretreatment unit, a pyrolysis gasification and purification unit, a gasification reduction ironmaking unit, and a waste heat comprehensive utilization unit. After pretreatment, the solid and hazardous waste enters a multi-stage gasifier for pyrolysis and gasification reactions. Combined with a two-stage gas-solid separation and return structure, the gas yield and carbon conversion rate are improved. The gasified gas enters the reduction furnace and pre-reduction furnace for cascade reduction, realizing the efficient recovery of iron resources from red mud. The waste heat comprehensive utilization unit performs multi-stage heat exchange on the tail gas and uses it for the preparation of gasifying agents, realizing closed-loop heat utilization. This invention constructs a multi-cycle system of gas, heat, and materials, realizing the recycling of gas, heat, and materials. It not only improves the resource utilization rate but also obtains tail gas rich in methane, achieving the synergistic and efficient resource utilization of solid and hazardous waste and red mud.

The invention relates to a circulating fluidized bed (CFB) stock boiler. According to the reconstruction and transformation method of the boiler, during transformation, the original boiler barrel, hearth and vertical shaft main body structures of the boiler are kept unchanged, and only a cyclone separator and a material returning system of the original boiler are omitted. The space between the rear wall of the hearth and the front wall of the vertical shaft is transformed into a two-return-stroke flue, a three-return-stroke flue and an auxiliary combustion chamber, and the structure has the function of integrating gas-solid separation, radiation heat transfer and boiling combustion; after transformation, the output can be obviously increased, the original output can be maintained, the material flow, flow velocity and flow resistance of the main combustion chamber can be reduced, the material internal circulation amount in the furnace is improved, and the fuel burnout degree is improved. The method is high in transformation efficiency, small in project amount, low in cost and short in period; after transformation, the pain points of high flow resistance, high failure rate and the like of the separator and a material returning system are thoroughly eliminated; the power utilization rate of the boiler can be reduced by 30%-50%, the operation and maintenance cost can be reduced by 70%-90%, the reliability, stability and heat efficiency of boiler operation are remarkably improved, the initial smoke emission concentration is greatly reduced, and the method is suitable for transformation of various CFB boilers in active service.

The invention relates to the technical field of rare earth secondary resource recovery, in particular to a neodymium iron boron waste recovery method. The method comprises the following steps: firstly, grinding the neodymium iron boron waste into fine granularity, and spraying into a specially designed flash reaction furnace body through a nozzle by virtue of carrier gas; meanwhile, sodium chlorate powder is continuously added into a pyrolysis area in the furnace, so that the sodium chlorate powder is instantly decomposed at a certain temperature, and high-activity gas is generated; the sprayed waste particles are in a suspended state in the reaction tower and are subjected to instantaneous gas-solid reaction with high-temperature active gas, rare earth elements are quickly oxidized and chlorinated and are converted into soluble rare earth oxychloride, and iron is mainly converted into FeO which is easy to magnetically separate. And carrying out cyclone dust collection and quenching on the reacted material to obtain a roasted product, recovering rare earth through water leaching, and recovering iron through magnetic separation. According to the invention, selective oxidation is completed at low temperature in a short time (second level), and the method has the outstanding advantages of high efficiency, low energy consumption and high recovery rate.

The invention relates to a flow guide component, a fluidized bed reactor and a reaction method. A flow guide member of the present invention comprises an elongate member having a proximal end and a distal end, and an elongate body extending between the proximal end and the distal end, where the elongate body comprises at least a section that, when the elongate body is cut at any position in a flow guide direction within the section, the flow guide member is configured to receive a flow of fluid from the elongate body. Only a pair of points which are farthest away from each other can be found on the outer periphery of the obtained cross section, the points are called a first point and a second point respectively, the outer periphery of the total cross section is divided into a first line and a second line which are connected end to end by the first point and the second point, and a straight line segment connected between the first point and the second point is called a boundary line. The length of the first line is set to be L1, the length of the second line is set to be L2, and the L1 / L2 value is larger than 1. A stronger vortex can be formed at the flow guide component, so that gas-solid contact and mixing are more effectively promoted, and the gas-solid fluidization quality is further improved.

The utility model provides a kind of sludge treatment system of coupling carbonization and gasification, including pyrolysis unit, combustion unit, waste heat recovery unit and flue gas collection unit. Among them, pyrolysis unit includes pyrolysis furnace and cyclone separator, the top of pyrolysis furnace is equipped with gas injection port, it is suitable for the temperature of fluidized gas in pyrolysis furnace is adjusted by inputting oxygen, to control pyrolysis furnace in gasification reaction or carbonization reaction;Cyclone separator is suitable for the pyrolysis product is carried out gas-solid separation and obtains pyrolysis gas and pyrolysis carbon, the outlet of cyclone separator includes gas product outlet and solid product outlet;Combustion unit is suitable for receiving pyrolysis gas generated in pyrolysis furnace and carries out combustion reaction, obtains flue gas;Waste heat recovery unit includes heat exchange component, heat exchange component is communicated with combustion unit, it is suitable for receiving and recovering heat in flue gas by heat transfer;Flue gas collection unit is communicated with heat exchange component, it is suitable for purifying and collecting flue gas.

The invention discloses flaky alumina and a preparation method thereof, the flaky alumina is in a square sheet shape and has a single crystal structure, the grain size of the flaky alumina is 300-1300 nm, and the grain thickness is less than or equal to 150 nm. The preparation method comprises the following steps: placing roasted SB powder and a quaternary ammonium base solution in a pressure container in a solid-liquid two-phase separation manner, carrying out a gas-solid reaction under certain heat treatment conditions, and drying and roasting the reacted solid powder to obtain the flaky aluminum oxide. The flaky aluminum oxide is regular in structure and flat and smooth in surface, can be used as a polishing material, a coating, a catalysis material and an adsorption material, and is simple in preparation process, easy in raw material obtaining and easy in industrial production.

The utility model provides a high-temperature gypsum production system which utilizes heat of produced high-temperature gypsum to heat desulfurized tail gas to realize white elimination of the tail gas so as to reduce the production cost of the high-temperature gypsum, and relates to the technical field of high-temperature gypsum production. The high-temperature gypsum production system comprises a high-temperature gypsum suspension calcining furnace, a spray desulfurization tower and a gas-solid separator, an air inlet of the gas-solid separator is connected with an air outlet of the high-temperature gypsum suspension calcining furnace, a tail gas inlet of the spray desulfurization tower is connected with an air outlet of the gas-solid separator, and the high-temperature gypsum production system is characterized by further comprising a first-stage gas-solid separation cooler, a discharge hole of the gas-solid separator is connected with a cooling gas inlet of the first-stage gas-solid separation cooler; an air inlet branch pipe for introducing air into the exhaust flue is arranged on the exhaust flue of the spray desulfurization tower, and an air outlet of the first-stage gas-solid separation cooler is connected with an air inlet of the air inlet branch pipe; and a gas mixing device positioned above the gas inlet branch pipe is arranged in the exhaust flue.

The utility model discloses a large cyclone gas separation device for spraying, which belongs to the technical field of spraying gas separation and comprises a separator, the separator comprises a cylinder and a first gas inlet, the first gas inlet is arranged on the outer side wall of the circumference of the cylinder and communicated with an inner cavity of the cylinder, and a second gas inlet is arranged on the outer side wall of the cylinder and communicated with the inner cavity of the cylinder. Impurity-containing gas enters the inner cavity of the cylinder through the first gas inlet for gas-solid separation; the spiral mechanism is arranged in an inner cavity of the first gas inlet and used for spirally guiding gas flow so that gas can rotate, and according to the large cyclone gas separation device for spraying, the spiral mechanism is used for spirally guiding impurity-containing gas at the gas inlet so that the gas can rotate; the rotating air generates large centrifugal force, the turbulence intensity of the air flow is improved, the centrifugal force and the turbulence intensity generated by the rotating air flow act together, particles are separated out more easily, and the separation efficiency of the cyclone separator is improved.

A multi-stage drying integrated spray dryer relates to the technical field of material drying equipment and comprises a main body rack, and a feed atomization unit, a multi-stage drying unit, a gas-solid separation unit and a waste heat dissipation unit are arranged on the main body rack. The feeding atomization unit adopts a composite atomization mode to guarantee uniform particle sizes of materials, the multi-stage drying unit improves the drying effect through three-stage gradient drying, the gas-solid separation unit optimizes the structure to achieve efficient separation, and the waste heat dissipation unit rapidly cools and prevents moisture regain. The problems that existing equipment is uneven in atomization particle size, insufficient in drying, incomplete in gas-solid separation, prone to moisture regaining and deterioration and the like are solved, and the finished product quality and the production efficiency are improved.

The invention relates to a rotary gas-solid separation device and method for a wet flue gas desulfurization tower. The rotary gas-solid separation device comprises a static flow guide part located on the outer layer, a rotary separation part located on the inner layer and a Venturi flow channel structure embedded in the rotary separation part and synchronously rotating with the rotary separation part. The static flow guide component comprises a plurality of curved-surface flow guide blades which are uniformly distributed along the circumferential direction of the inner wall of the desulfurization tower, and the curved-surface flow guide blades convert rising flue gas into rotational flow to enter an inner side rotating area; the rotating separation part comprises a cylindrical rotating body, a plurality of rotational flow blades uniformly mounted on the peripheral surface of the rotating body, and a main shaft fixed with the center of the rotating body; the Venturi flow channel structure comprises a contraction inlet section, an annular expansion outlet section and a throat section communicated with the contraction inlet section and the annular expansion outlet section. According to the invention, inertial separation, centrifugal separation and venturi condensation are combined in three stages, so that particulate matters with different particle sizes can be accurately captured in a grading manner.

This invention discloses a drum-type quicklime dewatering reactor, comprising a drum reaction unit, a feeding unit, a discharging unit, an air inlet unit, and an air outlet unit. The drum reaction unit is inclined, with its high end connected to the feeding unit and the air outlet unit, and its low end connected to the discharging unit and the air inlet unit. The drum reaction unit includes a main frame, a drum reaction chamber, and a central drive shaft. The drum reaction chamber is mounted on the main frame, and the central drive shaft is positioned along the axial direction within the drum reaction chamber. Driven by the central drive shaft, the drum reaction chamber rotates, thoroughly agitating the materials inside. This invention also discloses a method for using the above-mentioned reactor. This invention utilizes the reaction of granular quicklime with water containing moist gas to achieve the drying of circulating air in low-temperature evaporation technology. The phase motion generated by the drum rotation and the stirring rod disturbs the quicklime particles, thereby increasing the gas-solid contact area and reaction efficiency, enhancing the peeling of reaction products from the surface of the granular quicklime, and achieving continuous and efficient dewatering and drying.

The present application relates to a kind of steel enterprises gas-solid pollutant discharge integrated management system and method, belong to steel enterprises environmental management technical field.The system includes four modules of environmental protection digital map module, wisdom dispatching and path optimization module, risk early warning module and account management module.The method first establishes the information database of whole plant waste gas treatment, carries out unified coding naming and identity electronic tag transformation to the waste gas treatment facilities and its associated solid waste of each production unit, secondly, sorts out the solid waste utilization way, carries out information transformation to solid waste transport vehicle, metering system, then again access inspection system data, transfer warehouse inventory information and solid waste treatment unit's inventory information.The present application can realize the efficient management and control of whole process of atmospheric treatment and solid waste circulation by the treatment, management and control integration of gas-solid pollutant, improve the accuracy, timeliness and standardization of management.

The invention relates to the technical field of metal hydrogenation, and discloses a metal hydride preparation method, which comprises: S1, gas introduction: continuously introducing hydrogen gas with a pressure of 1-6 MPa and a temperature of 50-500 DEG C into a vertical reactor to form an upflow from bottom to top; and S2, hydrogenation: continuously feeding metal powder with the particle size of less than 2000 microns through a feeding pipe, carrying out hydrogenation reaction under the lifting of ascending airflow, discharging the product from an air outlet pipe along with the airflow, and starting a reaction heat exchanger to control the temperature and maintain the temperature required by the reaction. According to the method, metal powder is suspended and dispersed through ascending airflow, gas-solid contact is enhanced, and the reaction efficiency is improved; upflow has the functions of reaction and heat dissipation, reaction heat is timely guided out through convection, and caking or melting caused by local overheating is prevented; by combining temperature regulation and control of the reaction heat exchanger, dynamic heat balance is realized, the reaction stability is effectively guaranteed, the purity and granularity uniformity of the product are remarkably improved, and the method is suitable for continuous and high-quality metal hydride preparation.

The invention discloses anaerobic ammonia oxidation reaction equipment and method, and relates to the technical field of sewage treatment.The reaction equipment comprises a reaction tank, a separation device, a liquid guide device, a precipitation backflow device and a control system.During anaerobic ammonia oxidation reaction, the control system is manually operated, the precipitation backflow device is driven to operate, and the precipitation backflow device is driven to operate; the mixed sludge is guided into the reaction tank, meanwhile, the liquid guide device is driven to guide sewage into the reaction tank, the mixed sludge and the sewage are subjected to an oxidation reaction in the reaction tank, the separation element separates gas-solid mixed liquid rising in the reaction tank, and after the sludge naturally settles, the liquid guide device is driven to operate; after clear liquid on the upper layer of the reaction tank is discharged and gas generated by reaction is discharged, the residual mixed sludge in the reaction tank is discharged by driving the precipitation reflux device, the retention time of the granular sludge in the reaction tank is prolonged through the separation device, and the effect of improving the reaction efficiency is achieved.

The invention provides a cold rolling pickling waste liquid recycling roasting device, and relates to the technical field of pickling waste liquid treatment.The roasting device comprises a furnace body, an outer frame, a furnace cover part, a furnace bottom discharging structure and a preheating combustion furnace, the inner wall of the furnace body is lined with a refractory material, and the furnace cover part is provided with an atomization feeding structure and a waste gas pipeline; the atomization feeding structure atomizes and sprays waste acid liquid into the furnace, a plurality of flow aiding structures are arranged on the side wall of the furnace body, each flow aiding structure is distributed in the circumferential direction to form an annular array, the preheating combustion furnace is provided with a plurality of independent combustion chambers, and the combustion chambers are tangentially connected with the side wall of the furnace body through high-temperature gas guide pipes, so that high-temperature gas forms high-temperature rotational flow in the furnace. And the waste acid liquid fog drops are fully contacted and mixed in the high-temperature rotational flow. The gas-solid contact time is effectively prolonged, the reaction efficiency and roasting sufficiency are improved, uniform distribution of the temperature in the furnace is achieved, local overheating is avoided, and the resource utilization effect of the waste acid solution is improved.

This invention discloses an apparatus for preparing high specific surface area calcium hydroxide, comprising a lime premixing tank and a digestion reactor. The lime premixing tank contains a ribbon agitator connected to a stirring motor at the top of the tank. Steam is conveyed to the premixing tank via a Venturi mixer I. A powder distributor and baffles within the reactor ensure uniform material distribution and gas-solid separation. A closed-loop tail gas treatment system is employed, with a sawtooth distributor and spiral nozzles in the scrubbing tower providing efficient dust removal. Purified wastewater is recycled to Venturi mixer II via a booster pump for reuse. Water is atomized and replenished in the reaction zone via spiral nozzle II to enhance the three-phase reaction. The product settles via baffles and is discharged under control by a rotary valve, then collected after cooling by a screw conveyor. This invention, through a closed-loop design of premixing-steam conveying-tail water reuse-separation, achieves continuous production and efficient resource utilization, significantly improving the specific surface area and production efficiency of calcium hydroxide.

The invention provides an anti-interference ultrasonic flowmeter with double protection of shielding and filtering, and relates to the technical field of ultrasonic measurement. The anti-interference ultrasonic flowmeter with double protection of shielding and filtering comprises a meter body, the top of the meter body is fixedly connected with an adapter column, the top of the adapter column is provided with a host, the two sides of the meter body are fixedly connected with flanges, and the inner wall of one side of the flange is provided with a front protection assembly. Gas-solid separation is realized through three-stage gradient filtration (a first through hole, a second through hole and a third through hole of the sand prevention device) of the front protection assembly, and preliminary gas-liquid separation is completed by matching with the liquid accumulation assembly, so that interference of sand grains and accumulated liquid on the transducer is avoided from the source; the air spring shock absorber can effectively absorb vibration energy of a wellhead, and the stable sound wave propagation path of the transducer is guaranteed; metal shell shielding and a host filtering module form dual protection, electromagnetic interference is blocked, multiple structures cooperate to reduce time difference measurement errors, and the flow metering precision is improved.

The utility model discloses a gas-solid cyclone separator device for a cyclone volute, relates to the technical field of cyclones, and aims to solve the technical problems that the strength of a current inner barrel and the airflow guiding performance are insufficient, and the gas-solid separation efficiency is not improved. Comprising a support mechanism, an inner cylinder mechanism arranged at the lower end of the support mechanism and a reinforcing mechanism arranged at the upper end of the inner cylinder mechanism, the inner cylinder mechanism comprises a plurality of splicing cylinders which are spliced up and down, each splicing cylinder is composed of a plurality of hanging plates, and the support mechanism comprises a plurality of support plates. And connecting buckles are symmetrically arranged at the front end of the support plate. The gas-solid separator is stable in structural connection, high in strength and capable of guiding airflow, effectively reducing turbulence and vortex phenomena and enhancing centrifugal force to enable solid particles to be thrown to the cylinder wall more easily, the gas-solid separation effect is better, the gas-solid separation efficiency is remarkably improved, and the service life of the gas-solid separator is prolonged. And the separated particles are not easy to be entrained into the air flow again.

The embodiment of the application provides a kind of low energy consumption compression formula direct current atomization air pump operation control method and system, comprising: the gas flow of detecting airflow channel, particle size and average pressure;According to the gas flow, particle size and average pressure, gas flow basic characteristics and gas flow derived characteristic quantity are calculated;Through the grid division of gas flow, the gas region grid parameter is obtained by the gas flow basic characteristics and gas flow derived characteristic quantity;According to the gas region grid parameter, gas-solid atomization model is generated;According to the first control result of gas-solid atomization model, the first control result is compared with preset control result, and adjustment coefficient sequence is generated;The operation of atomization air pump is controlled by the adjustment coefficient sequence, and the parameter generation ability of control model is improved by the way of improvement for the adaptive control parameter of airflow channel, the generation accuracy of parameter is improved, atomization efficiency can be effectively improved, and the consumption time of atomization is reduced.

The invention provides a method for preparing magnesium oxide by calcining magnesite, which comprises the following steps: introducing fuel into a decomposer or into the decomposer and an activity regulator, igniting, and discharging generated high-temperature flue gas after flowing through a multi-stage preheating unit, a drying unit and a tail gas separation unit, feeding a water-containing magnesite raw material into a dryer to be in contact with hot flue gas from a preheater so as to remove moisture; the dried material passes through a multi-stage preheater and is subjected to countercurrent flow heat exchange with high-temperature flue gas from a decomposer, so that the temperature of the material is increased; the preheated material is heated to the decomposition temperature in a decomposer, and magnesium carbonate is decomposed to generate magnesium oxide; separating the decomposed gas-solid mixture to obtain a high-temperature magnesium oxide solid; and performing countercurrent flow heat exchange on the high-temperature magnesium oxide solid and combustion-supporting air, and outputting cooled magnesium oxide. Through multi-stage countercurrent flow heat exchange and product sensible heat recovery, an efficient heat energy circulation system is constructed, and the fuel energy consumption in the calcination process is remarkably reduced; the method realizes flexible regulation and control of magnesium oxide product activity, and is suitable for continuous clean production of fine particle raw materials.

This invention discloses a dual-duct vertical cooling device for material cooling and waste heat utilization. The main body of the device consists of a cooling cylinder, a feed hood, a rotary support platform, a discharge hood, and an external support frame. Multiple sets of cooling cones and a material collection tray are vertically arranged inside the cylinder, with a central ventilation duct in the center. The external support frame, through circumferential guide wheels and a cylinder retaining ring, ensures stable operation. The cooling cones adopt a combination of outer and inner cone structures, combined with a skirted concave design, which, combined with the rotation of the equipment, achieves flat material dispersion, expanding the gas-solid heat exchange area. The dual-duct system operates independently: turbid air is fluidized and pressure-stabilized by the discharge hood before directly exchanging heat with the material, with the heated gas used for material preheating; clean air indirectly exchanges heat with the cone walls through the central ventilation duct, forming clean air for use in the plant area. This invention achieves uniform material cooling, broadens the pathways for waste heat utilization, improves cooling effect and waste heat recovery efficiency, and is suitable for rotary kiln production lines in magnesium smelting and other similar applications.

The invention discloses an internal rotation type anti-slagging solid waste efficient combustion / carbonization device and method. The device comprises a feeding system, an air supply system, a combustion / carbonization system and a rotating shaft. The invention provides an internal rotation type rotating shaft with shoveling plates in a furnace, which can effectively prevent solid from slagging in a high-temperature environment. And a gas channel is formed in the rotating shaft, so that contact and mixing of the solid waste and air are further promoted, and meanwhile, the rotating shaft is cooled. Mixing in the gas-solid reaction process is enhanced, growth of ash in the thermochemical process is destroyed, the purposes of improving the waste combustion / carbonization efficiency and preventing slag bonding are achieved, meanwhile, cooling air is introduced into the low-speed rotary stirrer, and contact between fuel and air is promoted while high-temperature cooling of the low-speed rotary stirrer is guaranteed.

The invention discloses an oil-rich coal pyrolysis and gasification integrated efficient utilization method, and relates to the technical field of energy utilization, and the method comprises the following steps: S1, treating an oil-rich coal raw material, crushing and drying to make the water content of the oil-rich coal less than or equal to 5%, screening, and adding a catalyst at the same time; s2, the pretreated raw materials are conveyed to a pyrolysis unit for a pyrolysis reaction, oil gas and semicoke are generated in a fluidized bed at the temperature of 500-650 DEG C, part of pyrolysis gas is circulated to the fluidized bed to serve as a fluidizing medium, and meanwhile part of pyrolysis gas is circulated back to the pyrolysis unit; s3, semicoke generated by pyrolysis is conveyed to a gasification unit. The pyrolysis and gasification integrated efficient utilization method for the oil-rich coal shows remarkable advantages in multiple aspects, efficient cooperation of the whole process of pretreatment, pyrolysis and gasification, gas-solid separation, purification and waste heat recovery of the oil-rich coal raw materials is achieved through the highly integrated system design, and the resource conversion efficiency and the energy utilization rate are greatly improved.

The invention discloses a method and a device for solid phase generation through gas phase mixing reaction and gas-solid separation, the device comprises a device body, a gas preparation area, a mixing reaction area and a product collection area are sequentially arranged in the device body from bottom to top in a communicating manner, the gas preparation area comprises a sublimation bin, and a gas outlet of the sublimation bin extends upwards and is connected with the mixing reaction area above the sublimation bin; a plurality of high-pressure airflow inlets are circumferentially formed in the position, flush with the gas outlet in the top of the sublimation bin, of the bottom end of the mixed reaction area; the mixed reaction area is of a big-end-down conical structure, a conical turbulent flow partition is erected in the middle and comprises an upper conical partition and a lower conical partition with spiral rising arc-shaped concave grains on the surface, and the conical wall of the mixed reaction area extends outwards to form an annular product collecting area on the connecting plane of the upper conical partition and the lower conical partition. According to the invention, high homogeneous mixing and full reaction of gas phase can be realized without extra power, and the whole process of preparation-mixing-reaction-collection is integrated to achieve an integrated process flow.

The utility model provides a gas-solid separation system for flammable and explosive gas dust, which comprises a gravity settling device, a gas inlet pipe is arranged on one side of the gravity settling device, and the other side of the gravity settling device is communicated with a cloth bag dust removal device through a connecting pipeline. Collecting mechanisms are arranged at the bottoms of the gravity settling equipment and the cloth bag dust removal equipment, conveying mechanisms are arranged at the bottoms of the collecting mechanisms, negative pressure mechanisms are arranged on one sides of the collecting mechanisms, and balancing parts and pressure gauges are arranged on the outer sides of the gravity settling equipment and the cloth bag dust removal equipment. The gas-solid separation system for the flammable and explosive gas dust solves the problems that when the existing gas-solid separation equipment is used for treating the dust separation of the flammable and explosive gas, the potential safety hazard is high, the separated solid dust is inconvenient to treat, and the blockage phenomenon is easy to occur in the solid dust discharging process.