53results about How to "Solve spontaneous combustion" patented technology

The process of treating hydrogenation catalyst before application includes making the hydrogenation catalyst in oxide state to support organic acid and/or organic nitrogen compound, organic solvent and element sulfur and treating in dynamic heating equipment. The hydrogenation catalyst with supported sulfur containing matter, such as element sulfur, has raised sulfur containing matter utilization rate, smooth temperature raising in the catalyst bed, raised catalyst activity and other features. The method of the present invention may be applied for various kinds of hydrogenation catalyst.

The invention discloses a microbial preparation for gangue reclaimed soil. The microbial preparation comprises three microbial preparations which are respectively used independently, wherein the I type microbial preparation contains bacillus subtilis and bacillus licheniformis; the II type microbial preparation contains bacillus mucilaginosus and the bacillus licheniformis; the III type microbial preparation contains azotobacter chroococcum, bacillus megaterium, the bacillus mucilaginosus and lysine bacillus; the total viable count of every gram of the microbial preparation is (2-200)*10<8> CFU. The gangue reclaimed soil is covered in layers by using the microbial preparation disclosed by the invention, a first gangue layer, a sticky loess and fly ash mixing covering layer, a second gangue layer, a fly ash covering layer, a fine granular gangue layer and a loess covering layer are sequentially arranged from bottom to top, the I type microbial preparation is applied to the sticky loess and fly ash mixing covering layer, the II type microbial preparation is applied to the fly ash covering layer, the III type microbial preparation is applied to the loess covering layer, and crops are planted on the loess covering layer.

The present invention relates to an activated coke for absorbing persistent organic pollutant like dioxin in flue gas and a preparation method thereof by using coal quality semi coke as a raw material. The preparation method is as follows: crushing the coal quality semi coke; impregnating the coal quality semi coke with an impregnating solution containing metal hydroxide or alkali metal carbonate activator and compound surfactant, and naturally drying; and finally activating the impregnated and dried semi coke at 800-950 DEG C to prepare the activated coke for absorbing dioxin in flue gas. The activated coke has characteristics of developed porous structure, low manufacturing cost and good adsorption effect, etc.

A process for destroying ozone gas contained in tail gas includes such steps as making the tail gas containing ozone flow through water retaining plate for removing water, stage-one catalytic decomposing by using MnO2 as catalyst, and stage-two catalytic decomposing by using activated carbon as catalyst to decrease the content of ozone to 0.1 ppm or less. Its apparatus is also disclosed.

The invention provides a gob-side entry retaining method of a fully-mechanized mining/full-mechanized caving mining working face, belongs to the technical field of coal mine underground supporting, and is applicable to thick-coal-bed and high-gas-content coal mining working faces. By aiming at the problems generated when the existing gob-side entry retaining technology is adopted by the working face, the gob-side entry retaining method adopts the scheme that prefabricated cylindrical pier studs are arranged in a roadway arranged behind an end part hydraulic support frame of a stope working face, and in addition, square timbers are built above the pier studs, so that the pier studs can realize the in-time and firm contact with a top plate, and the effective supporting on the top plate is ensured; wood plates are used for sealing among the pier studs, the air leakage to a gob area can be effectively prevented, and the problem of spontaneous combustion of float coal in the gob area due to great air leakage quantity is solved; concrete foam is adopted for filling the steel pier studs; and the installation is convenient, the operation is simple, and the cost is low. Compared with the scheme requiring a single set of filling system for filling supporting, the method provided by the invention solves the problems of high supporting cost, system complexity and great operation difficulty, has wide practicability and belongs to the gob-side entry retaining method with the advantages that the cost is low; the construction is easy; the supporting intensity is high; and the stability is high.

The invention discloses wet moulding sand used for iron casting high density molding and a preparation method of the wet moulding sand. The wet moulding sand is made of the following raw materials of,by weight, 0.5-2 parts of bentonite, 0.2-1 parts of mixture soil (the mixture soil is composed of 70-85 parts of efficient pulverized coal, 10-25 parts of bentonite, 2-5 parts of alkaline lignite, 3-5 parts of asphalt, and 2-5 parts of alpha-starch), 0-5 parts of quartz sand new sand, 95-99 parts of quartz sand old sand, and the balance water. The wet moulding sand used for iron casting high density molding not only has high compression strength and wet-heat tensile strength, and further has excellent breathability, liquidity and surface drying; the moulding sand preparation technology is simple, the construction cost is low, and the wet moulding sand used for iron casting high density molding is suitable for large-scale popularization and application in high density molding.

The invention relates to a scheme and a storage method which can thoroughly solve the phenomenon of spontaneous combustion in circular coal storages, i.e. a spontaneous combustion solution for circular coal storages - a water vapour storage method. A pipeline is reasonably laid on the bottom of a coal storage to input water vapour into the coal storage, the water vapour then continuously seeps into the coal storage via water vapour discharge holes on the pipeline, so that the coal stored in the coal storage can be always covered in the water vapour, the input of the water vapour can ensure the that temperature of the stored coal cannot exceed 100 DEG C and that the moisture in the coal can be kept in a stable and balanced state for a long time, and consequently, the method solves the problems of constant temperature rise and moisture loss as the result of the oxidative decomposition of the coal stored for a long time, so that the phenomenon of spontaneous combustion cannot take place any more in the circular coal storage. The method is also applicable to the fields of coal storage, sulphur storage and the like in circular storages.

The invention discloses a method for utilizing mine coal gangues to control and fix sands. In the method, the coal gangues are placed in a grid shape to form a coal gangue windbreak, and shrubs are planted in grids. The placing density of the coal gangues is in direct proportion to the local wind power, and the placing density of the coal gangues in a prevailing wind direction is larger than the placing density vertical to the prevailing wind direction. An area of each grid is 2-5 square meters. The height of the shrubs is lower than the height of the coal gangue windbreak. By utilizing the mine solid waste coal gangues as materials, the method has the effects of, firstly, efficiently utilizing the mine solid waste coal gangues and solving the problems of large occupied land area of the coal gangues as well as spontaneous combustion and leaching pollution caused by the coal gangues; and secondly, solving the problems of low efficiency and easy damage of artificial grass planting grids in the process of current sand control. The invention has the advantages of simple implementation technology and long engineering utilization period, can efficiently control mobile dunes and blowout pits, can be widely used for sand control and fixation engineering in China and is particularly suitable for desertification treatment in coal mining areas of Shanxi, Shaanxi and Inner Mongolia.

The invention discloses a method for withdrawing equipment on a fully-mechanized coal mining face. The method comprises the following steps that (1), an air return gateway and a main transportation gateway are oppositely arranged on the fully-mechanized coal mining face, and a to-be-withdrawn part is arranged between the air return gateway and the main transportation gateway; (2), the to-be-withdrawn part is separated into a plurality of sub-parts along the extending direction of the fully-mechanized coal mining face; (3) a closed wall is arranged on the fully-mechanized coal mining face, a first withdrawing region is defined by the air return gateway and the closed wall, and a second withdrawing region is defined by the main transportation gateway and the closed wall; and (4), a flame-retardant medium is introduced into the first withdrawing region and/or the second withdrawing region, the sub-parts which are located in the first withdrawing region are withdrawn through the air returngateway, and the other sub-parts which are located in the second withdrawing region are withdrawn through the main transportation gateway. According to the method for withdrawing the equipment on thefully-mechanized coal mining face, the withdrawing time is shortened, the withdrawing time is shortened to be shorter than the natural ignition period of the coal, the ignition elements of a goaf arecut off fundamentally, so that the purpose of fire prevention and extinguishment is achieved, the cost is low, and the effect is good.

The invention discloses blast furnace injection coal and a safe and efficient injection method thereof. The blast furnace injection coal is pulverized coal prepared by mixing and grinding anthracite, lean coal and lignite. The lignite accounts for 10%-30%, the anthracite accounts for 36%-28%, and the lean coal accounts for 54%-42%. The safe and efficient injection method comprises the following steps that components are mixed by using a mill to prepare the pulverized coal; the pulverized coal is collected by using a cloth bag powder collector; the inlet flue gas temperature of the mill is controlled to be less than or equal to the ignition point 50 DEG C of mixed coal, the inlet flue gas oxygen concentration of the mill to be less than or equal to 6.00% and the outlet flue gas oxygen concentration of the mill to be less than or equal to 10.00%; the pulverized coal is collected by using the cloth bag powder collector; the pulverized coal is conveyed to a blast furnace injection station by using compressed air through a pipeline; the pulverized coal is conveyed to a blast furnace distributor via an injection tank to be distributed to each tuyere pulverized coal spray gun; and finally the pulverized coal is sprayed into a blast furnace through a blast furnace tuyere. By the adoption of the technical measures of reasonable coal blending, key process parameter control, proper widening of the granularity of the pulverized coal and the like, the safety control over a coal pulverizing system is effectively realized, the combustion rate of the pulverized coal is improved, and the coal blending cost is reduced.

The invention discloses a heat pipe device for deep heat transfer of a coal gangue dump. The heat pipe device for deep heat transfer of the coal gangue dump is applied to the technical field of coal gangue dump spontaneous combustion prevention. The heat pipe device for deep heat transfer of the coal gangue dump comprises a pipe body closed at both ends, wherein the upper end of the pipe body is closed by a coupling device; the lower end of the pipe body is closely connected to a drill bit; the inside of the pipe body is sequentially provided with an evaporation section, an adiabatic section and a condensation section from bottom to top; an absorption medium is arranged in the evaporation section of the pipe body; the capacity of the absorption medium is 35-40% of the whole pipe volume; and the outer wall of the evaporation section is provided with spiral ribs. The heat pipe device for deep heat transfer of the coal gangue dump has the advantages of simple structure, novel design and high practical value; and the heat pipe is adopted in the technology of heat pipe heat transfer, and under the action of the drilling bit, the device drills into the coal gangue; and the heat of the coal gangue is scientifically transferred outside, so that the temperature of the coal gangue is lowered to 80 DEG C or less, the problem of spontaneous combustion of the coal gangue dump is completelysolved, and it is necessary to widely promote the heat pipe device.

The invention relates to a caseless cartridge. The caseless cartridge is composed of a propellant powder column, a primer, a warhead, starting powder, a dampproof wrapping body and an isolating heat dissipation wrapping body, wherein the warhead is composed of a head cone, a cartridge belt, a tail protrusion or a missile wing and a tail post and is fixed into a center hole of the molded solid propellant powder column. The tail post of the warhead abuts against the primer. The warhead has the functions of a traditional bullet primer platform and an anvil. The starting powder with the burning rate higher than that of the propellant powder column is arranged in front of the primer and behind the tail protrusion or the missile wing to make percussion of the cartridge be stable and reliable. The dampproof wrapping body is made of a water-repellent organic thin film material and wraps a cartridge body completely to achieve the effective dampproof effect, and accordingly the misfire rate is reduced. The isolating heat dissipation wrapping body is made of metal foil with good heat conductivity so that temperature rising of the cartridge body can be effectively delayed, the high-temperature resistant performance of the cartridge body is improved, and adhesion between the dampproof wrapping body and a cartridge chamber is effectively isolated. The caseless cartridge is compact in structure and low in weight; the firing distance and penetrating power are increased, and the damage effect is improved; and the underwater using effect of the cartridge with a spiral wing is remarkable.

The invention relates to a stone color spot removing method and a stone color spot removing agent. The method comprises the steps of mixing and stirring a liquid oxidizing agent and a powdery carrieron a stone color spot removing site to obtain a paste material, or mixing the solid oxidizing agent, the powdery carrier and water at the stone color spot removing site to obtain a paste material, ormixing and stirring the color spot removing agent composed of the solid oxidizing agent and the powdery carrier with the water at the stone color spot removing site to obtain a paste material; and then applying the paste material to stone color spots. The defects that in an existing stone cleaning technology, a stone color spot removing method has a long cleaning process time, a short action timeof a cleaning agent, an unstable cleaning effect and a complex process, and the agent has deflagration hidden danger, chemical burn and inconvenient transportation and storage and the like are overcome.

The invention discloses a semicoke passivation technology and system. The system comprises a chilling zone, a spraying zone, a cooling zone, an oxidation zone, a delivery device and a water supply device, wherein the chilling zone, the spraying zone, the cooling zone and the oxidation zone are transversely arranged. According to the system, semicoke passivation can be achieved only through water and air at low cost with a simple method, and passivated semicoke is stable in state.

The invention relates to a flue gas displacement reinforced goaf gas extraction and goaf fire preventing and controlling method. The flue gas displacement reinforced goaf gas extraction and goaf firepreventing and controlling method is suitable for underground use of a coal mine, and comprises the steps that during the stoping process, a rock stratum above a goaf is broken and moved, an annular fracture zone is formed at the position of a caving arch, gas released in the stoping process is enriched, and gas injection pipelines are arranged on a roadside of the outer side of an air inlet lanein a paved mode and buried into the goaf; a drilling field is arranged at one side of an air return lane, pumping and extracting drilling holes are formed in from a drilling field to the caving arch position of the goaf, factory waste flue gas is injected into the goaf through the gas injection pipelines, and the gas enriched in the fracture zone is pumped and extracted through the pumping and extracting drilling holes; the flue gas is used for inhibiting the spontaneous combustion of residual coal in the goaf, the flue gas is injected into the goaf to balance the air pressure in the goaf by using belt pressure, and the air leakage of a working surface to the goaf is weakened; and flue gas is used for replacing, displacing and lifting the gas in the residual coal and surrounding rock to float to the fracture zone, and the gas pumping and extracting amount and the gas pumping and extracting concentration in the pumping and extracting drilling holes are improved to achieve the effects ofthe prevention and control of the fire in the goaf and improving the quality of the gas pumping and extracting.

The invention relates to the technical field of chargers, in particular to a device and method for overheat protection of a charger by using on-resistor of an MOS (Metal Oxide Semiconductor) tube. A rotating mechanism is arranged on the inner side wall of a wireless charger, an abutting plate is arranged at the output end of the rotating mechanism, the abutting plate abuts against the end, away from the jacking spring, of the containing frame, the temperature of the wireless charger body is monitored in real time through the temperature sensor, temperature data is transmitted into the main control panel, when the main control board judges that the temperature of the wireless charger body rises abnormally, the main control board is used for controlling the rotating mechanism to start so as to drive the abutting plate to rotate, so that the abutting plate is separated from the placing frame, the jacking spring is in a compressed state in a normal state, when the abutting plate is separated from the placing frame, the self restoring force of the jacking spring is used for driving the placing frame to rotate, and a mobile phone in the placing frame is separated from the coil, so that power supply is stopped.

The invention discloses a charging gun module structure with a high protection level. The charging gun module structure comprises a gun body provided with a molded grip, a power supply line and a charging plug, wherein the gun body is hollow, an integrated control module is installed in the gun body, the integrated control module comprises a module lower cover, a module upper cover, a feedback switch, a microswitch and an electromagnetic lock, the feedback switch, the microswitch and the electromagnetic lock are installed between the module upper cover and the module lower cover, the module lower cover and the module upper cover are oppositely arranged, and the power supply line and the charging plug which are connected with the control module are arranged on the gun body. The charging gunmodule structure with the high protection level has the beneficial effects that through the integrated control module, the situation that the feedback switch, the microswitch and the electromagneticlock of the existing charging gun on the market are damaged due to the situations that the internal structure of the gun body is messy, wiring harnesses are irregular and the like is effectively avoided; and the problem of spontaneous combustion caused by open circuit of the charging gun can be prevented so as to improve the charging safety.

The invention relates to the technical field of resource cycling comprehensive utilization, in particular to a using method of a waste tire fine rubber powder finished product arrangement device. The method is characterized in that technological processes such as conveying, sterilizing, separation and protection in the arrangement process of waste tire fine rubber powder finished products are completed by water vapor, according to the technical scheme, pulse bags are adopted to separate steam and capture rubber powder particles, and meanwhile the method is combined with technologies of cyclone separation and settlement separation; spiral ladder blades are designed, the rubber powder particles continuously colloid with the spiral ladder blades, run against the inner wall of a cylinder, then lose energy, and fall onto a turntable in the process of rising along the inner wall of the cylinder in a spiral mode, the steam passes through the channel of the spiral ladder blades and is discharged through filter bags, and accordingly aims of separating and capturing the rubber powder particles are efficiently achieved.

The invention relates to an environment-friendly cable for safety fire protection, which comprises a plurality of conductors. An insulating layer is extruded outside the conductor to form an insulating wire core; a temperature sensing wire is arranged between the insulating wire cores at intervals; a flame-retardant filling layer is arranged outside the insulating wire core; a wrapping layer, a ceramic silicone rubber layer, an aluminum alloy tape armor and a sheath are sequentially arranged outside the flame-retardant filling layer; when the cable passes through a fire scene or is in a complex high-heat environment in the operation process, the cable may be locally heated, heat is transferred to a temperature sensing wire in the center; when the temperature sensing wire reaches a set threshold value, the temperature sensing wire is fused, at the moment, normal operation of the cable is not affected, but the power monitoring part is reminded, so that the high-temperature point of the cable can be known, cooling treatment can be carried out in time, the spontaneous combustion problem caused by over-high temperature of the conductor can be well avoided, fireproof materials used outside the insulating wire cores are environment-friendly materials, and the quality of the cable is improved.

The invention discloses an explosion-proof and flame-retardant device for micropowder recovering containers and transport vehicle tank bodies and special equipment of the explosion-proof and flame-retardant device. The explosion-proof and flame-retardant device and the special equipment of the explosion-proof and flame-retardant device are applicable in industries of micropowder recovering, packaging, transportation and the like of various organic, inorganic and composite materials, the problems that traditional micropowder recovering containers and transport vehicle tank bodies are small in loading capacity, high in transportation cost, inflammable, explosive and slow in unloading, can cause secondary pollution and the like are solved, high-pressure and high-speed nitrogen gas flows are used for conveying the materials, a back-flushing dust removal bag, a directional vibration unloading device and a high-pressure nitrogen tank are adopted, and the problems about micropowder compaction, explosion prevention, flame retardancy, timed back flushing, directional vibration unloading, closed conveying, recovering, packaging and the like are solved effectively.

The invention discloses a rechargeable, fast access, double-ring-column structural three-dimensional parking garage. The rechargeable, fast access, double-ring-column structural three-dimensional parking garage includes parking boxes, an outer ring column, an inner ring column, a fixed base and a motor controller, the inner ring column is internally connected with a supporting rod, the fixed baseis provided with a rotating shaft, the supporting rod is connected with the rotating shaft, the fixed base is provided with a first driving motor used for driving the inner ring column to rotate, theouter ring column sleeves the inner ring column and is connected with the rotating shaft through a connecting rod, the fixed base is provided with a second driving motor used for driving the outer ring column to rotate, the motor controller is electrically connected with the first driving motor and the second driving motor respectively, one sides of the parking boxes are with opening structures, the parking boxes are successively arranged on one sides of the outer ring column and the supporting rod in a ring mode, and the parking boxes are internally provided with charging ports. According tothe rechargeable, fast access, double-ring-column structural three-dimensional parking garage, the charging ports is formed in the parking boxes, convenience of vehicle charging is improved, and timefor taking and placing vehicles are greatly shortened; and problems that common large-scale three-dimensional parking garage can not be isolated quickly, and cannot effectively deal with auto-ignitionof the vehicles are solved.