487 results about "Combustibility" patented technology

A wildfire defense spraying system installed on property with combustible property surfaces, and adapted for spraying the combustible property surfaces with an environmentally-clean water-based liquid fire inhibitor for defending against wildfire by inhibiting fire ignition and flame spread caused by hot flying wildfire embers created during a wildfire storm. The wildfire defense spraying system includes: a storage tank containing a supply of environmentally-clean liquid fire inhibitor comprising an alkali metal salt of a nonpolymeric carboxylic acid, and triethyl citrate (TEC) dissolved in water according to a prespecified formulation, wherein the environmentally-clean water-based liquid fire inhibitor remains stable without the formation of solids at expected operating temperatures, and ready for immediate spraying on combustible surfaces. An electric-powered hydraulic pump system is connected to a remote power control switch employed to supply electrical power to the electric-powered hydraulic pump system. A plurality of spray heads are mounted about the property and any buildings thereon, and arranged in fluid communication with the storage tank and the hydraulic pump system. During operation, the hydraulic pump system automatically pumps environmentally-clean water-based liquid fire inhibitor from the storage tank and through the spray heads to generate a spray pattern of environmentally-clean water-based liquid fire inhibitor over all the combustible surfaces on the property. As water molecules in the sprayed environmentally-clean water-based liquid fire inhibitor evaporate to the environment, thin fire-inhibiting alkali metal salt crystalline coatings form on the combustible property surfaces, inhibiting fire ignition and flame spread in the presence of wildfire embers.

The invention relates to an antibacterial PP material and a preparation method thereof, and belongs to the technical field of high polymer materials. The antibacterial PP material is prepared from the following components in parts by weight: 60 to 80 parts of PP resin, 2 to 4 parts of a surfactant, 0.5 to 1.5 parts of a modified antibacterial agent, 0.5 to 1.5 parts of a flame retardant and 0.2 to 0.8 part of an antioxidant, titanium ions in the modified antibacterial agent destroy bacterial cell walls, quaternized intermediate products react with proteins of cell membranes to accelerate bacterial death, and in addition, phenolic hydroxyl groups absorb ultraviolet rays with different wavelengths to inhibit the light aging process; a compact and continuous carbon layer is formed during combustion of the flame retardant and cooperates with phosphorus-oxygen double bonds and melamine, the flame retardant efficiency is improved, aluminum hydroxide coats the surface, hydroxyl is subjected to heat absorption decomposition during combustion, the surface temperature of combustible materials is stabilized, meanwhile, an inert aluminum oxide layer is formed, and the flammability is reduced. The antibacterial PP material prepared by the invention not only has good antibacterial and anti-aging effects, but also has excellent flame retardant property.

The invention discloses a halogen-free flame-retardant nylon material which comprises PA (polyamide), a toughening agent, a P-series flame retardant, an N-series flame retardant, modified polyhedral oligomeric silsesquioxane and a derivative flame-retardant synergist of the modified polyhedral oligomeric silsesquioxane. The modified polyhedral oligomeric silsesquioxane and the derivative flame-retardant synergist thereof contain boron, an annular structure R2 with the carbon hydrogen ratio larger than 1 and two inorganic silicon cage cores, and the structures form a carbon layer, a ceramic barrier layer, a protective film or a heat-insulation coke layer and other protective layers in the combustion process, so that the anti-dripping effect is greatly improved, and meanwhile, the anti-dripping effect is greatly improved. Heat and oxygen transfer is isolated, combustible gas release is reduced, and the flame retardant property of the material is remarkably improved under the combined action of multiple mechanisms. Furthermore, the flame retardant synergist of the modified polyhedral oligomeric silsesquioxane and the derivative of the modified polyhedral oligomeric silsesquioxane is matched with the P-series flame retardant and the N-series flame retardant to realize synergistic flame retardance, so that the flame retardant property of the flame-retardant nylon material is improved while the dosage of the flame retardant is reduced. The halogen-free flame-retardant nylon material provided by the invention is excellent in flame retardance.

The present invention relates to a contact combustion gas sensor provided with a coil-exposed detection element for detecting flammable gas leakage, and a method for manufacturing the same, the contact combustion gas sensor being provided with a detection element (210) that reacts with contact gas and a compensation element (260) that does not react with contact gas, the detection element (210) comprising a coil wire (222) and a thermal block (240), the coil wire (222) has a coil shape, an exposed portion of the coil wire (222) that is in direct contact with the outside air performs a direct catalyst combustion reaction with gas in contact with the outside air, and the thermal block (240) is disposed inside the coil wire (222), and a portion of the thermal block (240) is coupled to the coil wire (222) to support the coil wire (222).

The invention discloses a preparation method and application of a magnesium-aluminum hydroxide composite flame retardant, and relates to the technical field of flame retardancy. The preparation method comprises the following steps: mixing magnesium hydroxide and aluminum hydroxide in proportion, adding the mixture into a modified liquid for pretreatment; dispersing the mixture into DMF, dropping protocatechuic aldehyde into the mixture under stirring, introducing nitrogen, and reacting to obtain Schiff-alkalized magnesium hydroxide / aluminum hydroxide; dispersing the mixture into DMF, adding DOPO under stirring, and reacting to obtain a magnesium hydroxide / aluminum hydroxide composite flame retardant; the composite flame retardant contains three flame retardant elements, namely, N, P, and Si, and generates non-combustible gases such as N2 and NH3 to dilute the gas phase during combustion, and also generates groups such as P-O-P, Si-O-Si, and Si-C, so as to form a high-strength and dense silicon layer and carbon layer on the surface of a polymer, effectively reducing the heat conduction speed, isolating oxygen, and slowing down the escape of combustible gas, thereby reducing the decomposition rate of the resin and slowing down the combustion rate.

The overlying oxygen isolation device comprises a storage yard, a plurality of double-flow nitrogen conveying hoses are arranged on the upper surface of the storage yard, the interval between every two adjacent double-flow nitrogen conveying hoses is 0.5-3 m, a plurality of through grooves are formed in the outer surfaces of the double-flow nitrogen conveying hoses, the through grooves are distributed in the axis direction of the double-flow nitrogen conveying hoses, and the through grooves are communicated with the double-flow nitrogen conveying hoses. And a plurality of lifting arc supports are fixedly mounted on the upper surface of the storage yard corresponding to the double-flow nitrogen conveying hose. By arranging a double-flow nitrogen conveying hose, a nitrogen purifying and drying device and a nitrogen detection box, high-concentration nitrogen sequentially passes through a mixed gas buffer box, a first connecting pipe, a gas inlet pipe and a stable ventilation pipe and enters the combustible rock soil through the double-flow nitrogen conveying hose, and meanwhile, the nitrogen purifying and drying device extracts gas in the combustible rock soil; nitrogen rapidly enters the flammable rock-soil, air in the flammable rock-soil is rapidly extruded out through the nitrogen, and therefore the flammable rock-soil and the air are isolated, and spontaneous combustion of the flammable rock-soil is prevented.

The utility model discloses a flame-retardant energy-saving material incombustibility detection device which comprises a detection frame, the inner bottom wall of the detection frame is fixedly connected with a first moving frame through a lifting mechanism, a first screw rod is rotatably installed in the first moving frame, and a first motor connected with the first screw rod is fixedly installed on the outer wall of the first moving frame. And a moving block is mounted on the outer wall of the first screw rod through a limiting rod mechanism in a threaded manner. According to the flame-retardant material clamping device, the second screw rod, the movable plates, the connecting shaft and other assemblies are arranged, under the driving of the second screw rod, the two movable plates can drive the clamping frames on the two sides to move mutually, and therefore the distance between the two movable frames can be adjusted, flame-retardant materials of different sizes can be clamped and fixed, and the flame-retardant material clamping device is convenient to use. And under the driving of a third motor, a connecting shaft can drive the flame-retardant material to turn over through the cooperation of a clamping frame and a clamping plate, so that the front and back surfaces of the flame-retardant material can be conveniently detected.

The invention discloses a coal gangue-based solid fuel which comprises pulverized coal, coal gangue particles, a binder, a combustion improver and a sulfur-fixing agent. After the combustion improver prepared by the method disclosed by the invention is added into the solid fuel, the ignition point of the fuel can be obviously reduced, the flammability index of the fuel is improved, and the combustion performance of the solid fuel is greatly improved.

To provide a cooking device capable of achieving improvement in combustibility of a grill burner and uniform grilling of an object to be cooked while improving a lamp black burning effect by an after burner.SOLUTION: An after burner is attached to the upper side of an exhaust duct in a posture in which a burning surface is directed downward. A control plate 61 is provided in a communication port between a grill chamber and the exhaust duct. The control plate 61 includes an opening part 63, a right closing part 64, a left closing part 65, a right half opening part 66, and a left half opening part 67. The opening part 63 is provided in the center of the control part 61 and opens the communication port. The right closing part 64 and the left closing part 65 are provided on both of the right and left end sides of the control plate 61, and close the communication port. The right half opening part 66 is provided between the right closing part 64 and the opening part 63, and the left half opening part 67 is provided between the left closing part 65 and the opening part 63. The right half opening part 66 and the left half opening part 67 close the lower half of the communication port and open the upper half.SELECTED DRAWING: Figure 9

The invention discloses a preparation method of a flexible flame-retardant heat-insulation composite material and a product, a polyurethane material is modified to improve the functionality of the composite material, KH550, basalt fiber and SiO2 aerogel are adopted to perform physical and chemical modification on the composite material, the composite material is endowed with flame-retardant heat-insulation functions, flame spreading is slowed down, the flammability is reduced, and the flame-retardant heat-insulation composite material is prepared. And the purpose of safety protection is achieved.

The invention discloses a system and method for testing the flammability of a gas holder, the interior of the gas holder comprises a plurality of pipelines, valves and electrical connection points, and the system at least comprises a tracer gas container which is communicated with a gas simulation release point through a tracer gas pipeline and is used for releasing tracer gas at the gas simulation release point; the gas simulation release point is located at the joint of a valve and a pipeline in the gas holder; each detector is communicated with a monitoring point through a sampling pipe; the monitoring points are at least arranged at electrical connection points in the gas holder; the controller is in signal connection with the detector; the plurality of detectors are used for collecting tracer gas concentration values of a plurality of monitoring points and sending the tracer gas concentration values to the controller; and the controller is used for comparing the tracer gas concentration value at the monitoring point with a preset tracer gas concentration value so as to judge whether the flammability test of the gas holder is passed or not. According to the invention, the test accuracy and test efficiency of the flammability test of the gas holder are greatly improved, and the method is environment-friendly and has a wide application prospect.

An open riser anti-gravity mold filling integral solidification process device comprises anti-gravity casting equipment, a casting mold, a contact, a cut-off mechanism, a guide sleeve and a plunger. The casting mold is one or a combination of a sand mold, a metal mold and a ceramic mold, the casting mold is composed of a bottom sprue layer, an upper structure layer and an internal structure, and an open riser is arranged at the top of the upper structure layer in the casting mold; and the contact is positioned in the open riser of the casting mold. The invention further claims to protect an open riser casting mold anti-gravity mold-filling integral solidification process method using the open riser anti-gravity mold-filling integral solidification process device. The open riser casting mold anti-gravity mold-filling integral solidification process method sequentially comprises the following steps: preparing a casting mold; installing equipment; performing anti-gravity mold filling; intercepting and releasing pressure; and solidifying. The method is stable in mold filling, less in slag inclusion, less in pinhole and high in feeding capacity; air holes and cold shut can be avoided, and the combustible atmosphere concentration can be effectively reduced; the universality is high, and the production efficiency, the stability and the safety are high.

The invention relates to the technical field of material storage, in particular to a mining storage device which comprises a coal storage bin, an upper cover at the upper end of the coal storage bin is detachably connected, one side of the coal storage bin is sequentially provided with a feeding port and a ventilation hole from top to bottom, a square groove is formed in the inner wall of the coal storage bin, and the ventilation hole is formed in the inner wall of the coal storage bin. The gas dilution hole is formed in the bottom of the square groove in a penetrating mode and communicates with the gas conveying pipe, the elastic connecting rope is connected between the rotating plate and the valve plate, and the valve plate is arranged in the square groove in a sliding mode. When coal is stored in the coal storage bin, the rotating plate which intermittently swings drives the combustible gas protection assembly to move, carbon dioxide gas is intermittently supplemented, and combustible gas is extruded out through the carbon dioxide gas, so that the safety of the coal when the coal is stored on the inner side of the coal storage bin is remarkably improved; and threats caused by combustible gas and pulverized coal are eliminated.

To provide a combustion device that can enhance combustibility of low-grade fuel and can be attached to a furnace wall relatively easily.SOLUTION: A combustion device 1 has: a main fuel feed pipe 2 for feeding main fuel MF; a main fuel injection nozzle 3 for injecting the main fuel MF; an air feed pipe 4 for feeding primary combustion air A1; a primary combustion pipe 5 for primarily combusting mixed gas MG of the main fuel MF and the primary combustion air A1; and an auxiliary burner 6. The auxiliary burner 6 comprises: an auxiliary fuel feed pipe 61 for feeding auxiliary fuel SF; and an auxiliary fuel injection nozzle 62 for injecting the auxiliary fuel SF. In the combustion device 1, the auxiliary fuel feed pipe 61 of the auxiliary burner 6 is provided inside the main fuel feed pipe 2 and the main fuel injection nozzle 3. The auxiliary fuel injection nozzle 62 of the auxiliary burner 6 is provided projectingly toward the front part of the main fuel injection nozzle 3 from a front end of the main fuel injection nozzle 3.SELECTED DRAWING: Figure 1

The invention provides an electrolyte adopting double salts and an efficient flame-retardant additive and application of the electrolyte in a lithium iron phosphate battery, and relates to the technical field of lithium iron phosphate batteries. The electrolyte comprises double salts, a flame retardant additive and a solvent, wherein the double salts are lithium bis (fluorosulfonyl) imide (LiFSI) and lithium hexafluorophosphate (LiPF6). Preferably, the electrolyte contains a high-fluoro diluent, so that the overall solvation ability of solvent molecules can be reduced, and a high-stability solvation structure is formed. The electrolyte provided by the invention can inhibit generation of combustible gas and improve the energy density of the lithium iron phosphate battery, and the additive in the formula is beneficial to formation of a stable SEI film on the surface of an electrode and reduction of loss of active substances, so that the service life of the battery is prolonged.

The invention relates to the technical field of refrigeration air conditioners, in particular to an efficient environment-friendly low-GWP air conditioner refrigerant formula and a preparation method thereof. The technical problem that an existing low-GWP refrigerant is high in flammability is solved. According to the refrigerant formula prepared by the invention, a high-energy-efficiency natural working medium and an ultralow-GWP fourth-generation refrigerant are taken as main components, a small amount of phosphorus-nitrogen hybrid compound is added as a flame-retardant additive, and the main components are mixed under the conditions of low temperature and high pressure. The flame-retardant additive adopted by the invention has excellent flame retardance, and can capture free radicals and release inert gas to inhibit combustion chain reaction during combustion. Nanoscale dispersion of the additive is realized through a low-temperature ultrasonic-assisted microjet homogenization technology, and the stability of the components is ensured by utilizing online monitoring. According to the refrigerant prepared by the invention, the combustibility is greatly reduced while the refrigeration performance is ensured, and both low GWP and low combustibility are realized.

The present invention relates to the technical field of phosphorus-nitrogen synergistic flame retardant materials, and particularly relates to triazine ring compounds, preparation methods, triazine ring phosphorus-containing flame retardants and applications. The chemical structure of the triazine ring compound simultaneously has a phosphorus-containing group and a nitrogen-containing group. During the combustion process, the phosphorus-containing group forms P· radicals and PO· radicals, which quench H· and HO· radicals in the gas phase, having a gas-phase flame retardant effect. At the same time, the phosphorus-containing group is further oxidized to form phosphoric acid, promoting the formation of a dense carbon layer in the polymer matrix, achieving the effect of condensed-phase flame retardancy; the nitrogen-containing group can form non-combustible components such as ammonia and nitrogen oxides during the combustion process, effectively reducing the concentration of oxygen and combustible gases in the combustion area, achieving the purpose of gas-phase flame retardancy; the phosphorus-containing group and the nitrogen-containing group can exert the phosphorus-nitrogen synergistic flame retardant effect, thereby achieving the purpose of high-efficiency flame retardancy.

The application provides a liquid nitrogen washing tail gas resource utilization system and method, and belongs to the technical field of tail gas treatment and energy recovery. The application uses a heat exchanger (1) to heat exchange the liquid nitrogen washing tail gas, so that the liquid nitrogen washing tail gas is combusted at a suitable working temperature of a first catalyst (3). In the application, the first catalytic combustion tower (2) is communicated with a constant temperature device, so that the temperature of the first catalytic combustion tower (2) is stably kept at 250-320 DEG C, the safety hidden danger caused by violent reaction is eliminated, and the catalyst cost is significantly reduced. Meanwhile, the steam generated after the constant temperature device is cooled can be used for enterprise heating and heating, and economic benefits are created. The application uses a second catalytic combustion tower (4) to fully catalytically oxidize the combustible gas in the first flue gas, and the generated second flue gas is partly used for heat exchange of the heat exchanger (1), and the gas after heat exchange and the other part of the second flue gas are used for heat supply of a coal mill (6), so that the heat is fully recycled and utilized.

The present invention provides a flavor needle, a preparation method thereof, and its use in tobacco. The preparation method of the flavor needle comprises the following steps: (1) pretreatment of raw materials; (2) extraction; (3) removal of residues and impurities; (4) preparation of dry powder; (5) preparation of flavoring agent; (6) preparation of flavor needle. The flavor needle prepared by the present invention has good combustibility, prominent flavor, has functional effects, can be directly eaten, is easy to carry, convenient and fast to use, and has high selectivity; it can be used in tobacco sections and non-tobacco sections, can be used alone or adhered to each other using a food binder as a composite flavor needle, and adopts segmented different flavors, so as to realize the transformation of different flavors in the front section, middle section, rear section, and end section.

The present invention relates to particular combustors, and e.g., to a combustor comprising a central primary fuel lance, a pilot fuel conduit, a primary oxidant conduit, a secondary oxidant conduit, and optionally a secondary fuel conduit, which are arranged in a particular and advantageous manner so as to surround each other at least in their downstream sections. The invention also relates to a furnace comprising the burner and a method of operating the burner. The burner according to the invention provides, in particular, a particularly advantageous way that comprises a pilot burner as part of the main burner in order to ignite a liquid fuel flame in a cold furnace. If desired, the pilot flame may help extend the flammability limit or operating range of the liquid fuel burner.

The invention relates to the technical field of civil fuels, in particular to a civil ether-based fuel which is formed by mixing C5 and dimethyl ether. The content of the C5 is 10-30% by weight, the content of the dimethyl ether is 70-90% by weight, the C5 adopted by the civil ether-based fuel is a low-pressure flammable liquid and can still be stored in a common low-pressure steel drum after being mixed with the dimethyl ether, a high-pressure container is not needed, and the leakage and explosion risks are reduced; and during combustion, 'air-light hydrocarbon mixed gas' generated by a special gas generator is saturated gas, is easy to mix with air and is not easy to gather together, so that the occurrence of emergency accidents such as explosion or poisoning and the like is reduced.

The utility model relates to a cigar smoke panel test auxiliary device. The cigar smoke panel test auxiliary device comprises a box body and an air generator, the box body comprises a detachable upper top cover, side walls and a lower bottom plate; a pipe body is arranged in an inner cavity of the box body; two ends of the pipe body are fixedly and tightly connected with the box body through nuts; and the like. When the cigar smoke panel is used, a sensory smoke panel test of multi-cigarette multi-dimensional comparison is carried out in a group, if cigars can be combusted for a long time, comparison in the group can be carried out at the same time, the cognitive burden and the taste memory requirement of smoke panel test personnel are reduced, and the cigar smoke panel test efficiency is improved. Meanwhile, by means of the design, smoke panel test personnel can smoke more cigarettes compared with smoke panel test personnel under the equivalent nicotine intake burden within the same time. The comparison purpose is achieved, the smoke panel test efficiency is improved, and a more accurate comparison conclusion is obtained. And meanwhile, the device is provided with a white cigarette ash collecting tray, so that the cigarette ash characters of the cigars can be compared after the cigars are smoked, and more intuitive combustibility evaluation can be obtained.

1. The name of the product of this design: combustible waste gas treatment device. 2. Purpose of the product of this design: to treat and discharge combustible waste gas generated after use in semiconductor manufacturing process or chemical process. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a combined type waste gas and waste liquid burner spray gun which comprises a spray gun barrel, a waste liquid pipe, an atomized air pipe, a waste gas pipe and a spray gun head. The waste liquid, the atomized air and the waste gas are jointly connected to the spray gun head through the waste liquid pipe, the atomized air pipe and the waste gas pipe, the waste liquid and the atomized air in the premixing chamber at the spray gun head are sprayed out from the outlet of the premixing chamber after being fully mixed for the first time, and then the waste liquid and the waste gas sprayed out from the waste gas spray head are secondarily mixed and fully combusted. The original spray gun spraying combustion mode that only a single raw material can be used as fuel is changed, combustible waste gas and waste liquid generated by a natural gas burner or a diesel burner can be combusted in a combined mode, the repeated utilization rate of the combustible waste gas and waste liquid is increased, and energy is saved.

This invention provides a method and system for producing vinyl acetate. [Solution] A method and system for producing vinyl acetate can use a combustion limit (FL) formula with improved efficiency at one or more locations in the vinyl acetate production process. In this invention, FL can be used in one or more of the four parts of the vinyl acetate production process: the reactor, the inter-process heat exchanger, the carbon dioxide removal system, and the ethylene recovery system. Such FL is a function of the operating state and includes at least one interaction term that represents the interrelationship of two or more operating states (e.g., temperature, pressure, and component concentration) with respect to FL.

The present invention discloses a combined quality improvement method for a flue gas modified wheat straw and lignite mixed fuel, comprising the following steps: uniformly mixing wheat straw powder and lignite powder to obtain a mixture, drying the mixture at 200-270°C for 25-30 minutes in a flue gas atmosphere, and cooling to room temperature to obtain a flue gas modified wheat straw and lignite mixed fuel. The fuel quality and physical properties of the flue gas modified wheat straw and lignite mixed fuel are improved. The combined quality improvement method can compensate for the loss of combustible components during the drying process, enhance the hydrophobicity of the flue gas modified wheat straw and lignite mixed fuel while improving the quality of the combined quality improved fuel, effectively improve the combined utilization value of lignite and wheat straw, significantly reduce the emission of NOx from the combustion product, and reduce pollution, effectively improve the utilization value of wheat straw and lignite, and achieve efficient energy saving and carbon reduction at the production capacity end.

The application discloses a construction method for isolating combustible gas risk in a pipeline and a structure thereof, and comprises the following steps: screening a blocked pipeline with hidden safety hazards on both sides of a construction position; customizing a flange blockage device according to the specification of the blocked pipeline at the construction position; sealing the pipeline on both sides of the construction position by the blockage device; reforming the pipeline passing through the construction position into a detection gas pipeline with safety gas; providing an inlet of safety gas at one end of the detection gas pipeline and connecting a gas discharge port of the pipeline at the other end for discharging the safety gas; continuously injecting the safety gas into the detection gas pipeline and keeping the gas in the detection gas pipeline in a slightly positive pressure state, meanwhile, opening a vent valve of the gas discharge port and detecting the safety gas concentration in real time at the position; judging the safety of the construction position according to the concentration standard value of the safety gas. In the case that there is no internal leakage of the valve or there is internal leakage of the valve, the safety hidden danger caused by production suspension, maintenance and modification can be solved by the isolation method.

An oxygen isolation device for preventing combustible rock and soil from spontaneously combusting, and a use method. At least two gas delivery hoses are provided on the upper surface of a combustible rock and soil accumulation body, the gas delivery hoses are spaced apart by a certain distance, and a plurality of through grooves are provided on the outer surface of each gas delivery hose, with the through grooves being distributed in the axial direction of the gas delivery hose. By means of providing the gas delivery hoses, a gas treatment device and a gas detection box, an inert gas enters the interior of the combustible rock and soil via the gas delivery hoses, and at the same time, the gas treatment device extracts gas from the interior of the combustible rock and soil, such that the inert gas quickly enters the interior of the combustible rock and soil, and the air is quickly expelled by the inert gas from the interior of the combustible rock and soil, thereby isolating the combustible rock and soil from the air and preventing the combustible rock and soil from spontaneously combusting.

The utility model discloses a power plant fuel management device which comprises a management box and further comprises a management assembly arranged in the management box and used for controlling and managing the surface temperature of pulverized coal fuel, the management assembly comprises a first multi-way pipe arranged on one side of the management box, and an air inlet pipe is arranged on the side, away from the management box, of the first multi-way pipe. An air heater is arranged at the end, away from the first multi-way pipe, of the air inlet pipe. Through the arrangement of the management assembly, pulverized coal fuel is preheated before entering the combustion furnace, so that management control over the surface temperature of the pulverized coal fuel is achieved, the preheated pulverized coal fuel can rapidly reach a stable combustion state after entering the combustion furnace, the flammability of the pulverized coal fuel is improved, and the combustion efficiency of the pulverized coal fuel is improved. And the loss of pulverized coal fuel in the combustion process is reduced, so that the fuel expenditure cost of a power plant is further reduced.

The invention discloses a compound liquid fertilizer for improving combustibility of cigar tobacco leaves as well as a preparation method and application of the compound liquid fertilizer. The compound liquid fertilizer comprises the following components by concentration: 11-12 g / L of zinc, 1.3-1.6 g / L of boron, 0.6-0.8 g / L of molybdenum, 3-4 g / L of brown algae essence, 3-4 g / L of alfalfa extract paste and 78-83 g / L of sugar alcohol chelated magnesium (based on magnesium). The high-efficiency compound liquid fertilizer is constructed by taking sugar alcohol chelated magnesium as a core and compounding trace elements such as zinc, boron and molybdenum as well as the brown algae essence and the alfalfa extract, the magnesium element can be stably released, the interference of side-effect ions is avoided, meanwhile, the potassium-chlorine ratio of tobacco leaves, carbon and nitrogen metabolism and soil micro-ecology are synergistically regulated and controlled, and the yield of the tobacco leaves is increased. Combustion components and physical structures of the tobacco leaves are optimized from the source, and finally the combustion quality of the cigar tobacco leaves is remarkably improved.