48results about How to "Reduce the chance of spontaneous combustion" patented technology

The invention discloses a coal mine gob area sealing method, and belongs to the technical field of coal mine gob area gas extraction. When retaining walls of a first sealing chamber or roadway surrounding rocks between the retaining walls are cracked, cracks can be rapidly filled by the aid of fine sand with flowability under the action of ground stress and mining dynamic stress, and tightness is ensured. By the aid of positive and negative differential pressure characteristics of a second sealing chamber, nitrogen pressure in the second sealing chamber is constantly higher than air pressure in a ventilating roadway, a gob area is separated from the ventilating roadway by the second sealing chamber, air in the ventilating roadway cannot enter the gob area, and gas in the gob area cannot permeate into the ventilating roadway. By double sealing of the first sealing chamber and the second sealing chamber, sealing reliability of the gob area is greatly improved, the probabilities of spontaneous combustion of float coal and gas explosion are minimized, and safety of nearby roadways or working faces is guaranteed.

The invention relates to a lignite-drying and quality-improving process for preparing superheated steam from waste heat steam. The process comprises the following operation steps of: firstly, providing a heat source for a heat energy device for preparing the superheated steam from the waste heat steam by using high-temperature flue gas produced by a hot-blast stove; secondly, recycling, purifying and refining waste heat steam produced by a normally-running energy-saving cylindrical lignite-drying and quality-improving device; thirdly, preparing high-temperature superheated steam by using the heat energy device for preparing the superheated steam from the waste heat steam; fourthly, drying wet-based lignite and improving quality by using the energy-saving cylindrical lignite-drying and quality-improving device; and finally, recycling the waste heat steam produced in a drying process by the recycling, purifying and refining steps. The process uses the waste heat steam to dry the lignite and has the characteristics of reasonable design and simple, convenient and smooth route. The device has the characteristics of optimized design, compact structure, small floor area, a small amount of investment, low running cost, high yield, large dehydrating range, safe running, energy conservation, capability of saving power, lowering consumption and reducing emission, wide application range of quality-improved lignite and the like.

The invention relates to the field of boiler safety in power plants, and discloses a spontaneous combustion pre-warning and fireproofing system for coal stored in a raw coal hopper. The spontaneous combustion pre-warning and fireproofing system comprises a CO sensor, a smoke detector, one or more of temperature sensors, a CO2 gas bottle and a controller, wherein the CO sensor is positioned at the top of the raw coal hopper, and used for detecting the CO concentration at the top of the raw coal hopper; the smoke detector is positioned at the top of the raw coal hopper, and used for detecting the smoke concentration at the top of the raw coal hopper; the temperature sensors are positioned on the outer walls at highly spontaneous combustion points of the raw coal hopper, and used for detecting the temperatures of the highly spontaneous combustion points of the raw coal hopper; the CO2 gas bottle is connected with a first stop valve, and used for supplying CO2 gas; the controller is connected with one or more of the CO sensor, the smoke sensor and the temperature sensors as well as with the first stop valve, and used for controlling the open-close of the first stop valve according to the information provided by one or more of the CO sensor, the smoke sensor and the temperature sensors, so as to ensure that the CO2 gas bottle is communicated with or isolated from the raw coal hopper. Through the adoption of the spontaneous combustion pre-warning and fireproofing system, automatic pre-warning and inerting extinguishment can be realized when the coal stored in the raw coal hopper is subjected to spontaneous combustion.

The invention relates to a method for enlarging, filling and supporting a coal-pillar-free mining roadway for fully-mechanized top coal caving, which comprises the following steps of: A, evenly mixing gravel and sand on a ground mixing plant; B, transferring the obtained mixture of the gravel and the sand, cement, flyash and additive to a storing part of an underground pump station; C, loading the materials in the step B to a mixer to be mixed evenly to obtain filling concrete; D, pumping the concrete obtained in the step C to a filling module, and filling along with the enlarging to ensure filling quality; E, forming a filling wall with an early strength in the filling module by the concrete, and demoulding after the filling wall reaches the supporting strength of a top plate; F, cleaning a filling pipeline, and pumping clean water to moisten the pipeline and test the pressure; and G, repeating the steps A-F until the filling is completed.

The invention discloses a gasoline engine EGR stratified charge system based on a flow guiding plate, and belongs to the technical field of engines. An exhaust pipe is fixedly connected with an intake manifold through a bypass pipe, an EGR valve, an EGR cooler and an EGR loop. An airflow cavity in the air inlet side of a cylinder cover part is respectively and correspondingly connected with an airflow cavity of an air inlet diverting cavity part, an air inlet of the cylinder cover part corresponds to branch pipes of the air inlet diverting cavity part, a throttle valve is fixedly connected with an intake manifold hole through the intake manifold, and the exhaust branch pipes of the exhaust pipe are correspondingly connected with four exhaust ways of the cylinder cover part respectively. Waste gas and fresh air can be prevented from being early mixed outside a combustion chamber and can also be prevented from being accumulated and mixed when an air inlet door is closed, the equipressure air intake of the fresh air and the pressure can be achieved, the mixed degree of the fresh air and the waste gas can be reduced, the load control of an engine can be achieved, the circulation thermal efficiency of a gasoline engine is improved, high EGR efficiency can be achieved, and the combustion economical efficiency of the gasoline engine is effectively improved.

The invention provides a phenol aldehyde resin which is prepared by reacting phenol compounds, aldehyde compounds and graphene, wherein the mole ratio of the phenol compounds to the aldehyde compounds is 1:(1.0-2.5), and the mass ratio of the graphene to the phenol compounds is (0.01-2):100. The invention provides a preparation method of the phenol aldehyde resin, which comprises the following steps: carrying out first reaction on the phenol compounds, an alkaline catalyst, the aldehyde compounds and the graphene to obtain a reaction product, wherein the temperature of the first reaction is 60-90 DEG C; and carrying out second reaction on the reaction product and alcohol compounds to obtain the phenol aldehyde resin. The invention also provides an automobile filter paper prepared from the phenol aldehyde resin in the technical scheme, or prepared from the phenol aldehyde resin prepared by the method in the technical scheme. The phenol aldehyde resin provided by the invention comprises graphene, and thus, has favorable electric conductivity.

The invention relates to a lignite drying and screening forming process which comprises the following steps of: directly sending the lignite to a rotary-cylinder drying and screening machine after processing lignite by a pulverizing machine, and drying the lignite by hot flue gas; introducing the dried lignite into a screening cylinder during lignite raw material drying process, directly delivering out the screened coarse lignite, and introducing fine lignite particles into a forming machine; introducing fine lignite powder in the rotary-cylinder drying and screening machine into a fine powder collecting device, introducing the dust in the fine powder collecting device into a cloth bag dust-removing device through a duct, and introducing the fine lignite powder into the forming machine; delivering out the fine lignite particles and the fine lignite powder after forming in the forming machine; and exhausting dust by a fan machine through a duct. The invention screens lignite during the drying process, selects high-quality lignite as a finished coal product to be sold at a high price, and forms low-quality coal as molded coal to be sold in an adhesive-free extrusion mode. The process increases the heat value of lignite, reduces the self ignition probability of lignite, and solves the problem of environmental pollution of powder coal during storage, packaging and transportation processes. By adopting the special device for drying and screening, the invention has simple process and wide application range.

The present invention relates to the application of a kind of care agent on automobile engine circuit, and this care agent is made of ethane, heptane, octane, nonane, decane or is made of ethane, heptane, octane, propane, butane, bromine Heptane is prepared according to a certain weight percentage ratio; the preparation method is to firstly dissolve heptane and octane, put them in a reactor for preheating, then add polymer resin, stir thoroughly and cool to room temperature, and then add ethyl alkane, butane or nonane, stir to make it fully miscible; finally add penetrating agent and anti-drying agent, and fully stir to obtain the product of the present invention. After testing, the care agent of the present invention has 100% insulation, can withstand 51,700 volts of high voltage, can eliminate the problem of aging, cracking and leakage of lines, and forms a protective film on all lines and wire joints of the engine to prevent the intrusion of water vapor and moisture, and avoid oxidation. After spraying the care agent on the car engine line, it can reduce noise, reduce engine vibration, and reduce engine spontaneous combustion rate.

A cigarette has a tobacco section in which cut tobacco is wrapped with a cigarette wrapper, a filter section connected to one end of the tobacco section, and a tip paper integrally connecting the tobacco section to the filter section in a manner to cover the proximal end portion of the tobacco section and the filter section and provided with ventilation holes formed in a circumferential direction in positions apart from the smoking end of the filter section. The tobacco section has a rod length of 30 to 46 mm, and a cut tobacco filling density of 180 to 270 mg/cm3. The cigarette wrapper has a basis weight of 17 to 21 g/m2, a mixing ratio of a calcium carbonate filler of 16 to 25% by weight, and a calcium carbonate content of 3 g/m2 or more. The cigarette provides at least six puffs under a standard smoking condition.

The invention discloses a high-safety automobile oil tank installation protection box and relates to the technical field of vehicles. The high-safety automobile oil tank installation protection box comprises a box body. The two sides of the top of the box body are in threaded connection with a box cover through bolts. The surfaces of the bolts are in threaded connection with fixing nuts. A sealingpad is arranged between the top of the box body and the box cover. An oil filling device is fixedly connected to the surface of the box cover. A supporting board is connected between the two sides ofthe inner walls of the box body in a sliding mode. Sliding grooves matched with the supporting board are formed in the two sides of the inner walls of the box body. A heat conductive board is fixedlyconnected to the surface of the supporting board. The high-safety automobile oil tank installation protection box has good shock absorption buffering protection capacity and protects an oil tank, meanwhile, oil can be filled from the outer side of the box, use is convenient, sealing performance is good, vibration impact of the oil tank can be greatly reduced, a heat dissipation effect is good, fire source obstructing and static electricity eliminating functions are achieved as well, and safety of the oil tank is greatly improved.

The invention discloses a novel electrode slice, which relates to the field of a lithium ion solid state battery. The electrode slice mainly comprises a current collector and a coating layer I appliedto both side surfaces of the current collector; the outer side of the coating layer I is coated with one or two of a coating layer II or a coating layer III; the coating layer I contains an electrodeactive material, a binder and a conductive agent; the coating layer II contains a lithium ion conducting material, inert powder, and the binder; and the coating layer III contains a lithium salt andthe binder. The coating II and the coating III can synchronously expand and contract with the coating I, and so, the probability of breakage is reduced, and the coating II and the coating III can actas a diaphragm, thereby reducing danger brought by fragmentation of the diaphragm, and the service life of the solid-state battery is also guaranteed. In addition, the preparation method is also relatively simple and is suitable for scale performing, and a cell of the solid-state battery prepared by the method is strong in safety and in service life.

The invention provides a new energy battery with a spontaneous combustion prevention structure. The new energy battery with the spontaneous combustion prevention structure comprises: a battery box; and a refrigeration chamber arranged in the battery box. The new energy battery with the spontaneous combustion prevention structure is mainly used for generating cold air and cooling a battery pack by arranging a cooling structure, when the temperature in the battery pack rises quickly, the temperature change is detected by a temperature sensor, a signal is immediately sent to a controller, cold air is continuously blown into the battery assembly, the battery assembly is effectively cooled, meanwhile, a second valve and a ventilation structure are closed, at the moment, the interior of the whole battery storage chamber is in a sealed state, internal air cannot rapidly circulate, and the spontaneous combustion condition of the battery assembly is limited in cooperation with the cooling effect of the cold air, so the spontaneous combustion probability of the battery assembly is reduced, and a good protection effect is achieved.

The invention discloses an emission reduction system and method for gradient and cyclic utilization of waste gas of the carbon industry. By a plurality of gas delivering control units which are additionally arranged in the emission reduction system for gradient and cyclic utilization of the waste gas of the carbon industry, parameters of a plurality of adjusting valves and booster fans are adjusted reasonably, the waste gas is automatically and accurately distributed into different carbon production processes and then is utilized in a gradient manner, self-circulating utilization of the waste gas in the same production process is implemented, therefore, the waste gas used as a combustion-supporting gas is reutilized, and the effect of reducing the amount of the waste gas and emission of pollutants is achieved. For solving the problem that waste gas pollution in the carbon industry is severe, the emission reduction system and method for gradient and cyclic utilization of the waste gas of the carbon industry are provided. The emission reduction system and method for gradient and cyclic utilization of the waste gas of the carbon industry play an important role in reduction of the total amount of discharged pollutants in the waste gas and economic, reasonable and efficient utilization of latent heat of the waste gas and ingredients of the combustion-supporting gas.

The invention discloses an integrated briquette coal conveying, cooling and curing process and device. By using the process and device disclosed by the invention, the temperature of a hot briquetting coal of lignite can be reduced, meanwhile, fine powder attached on the surface of the briquette coal is reduced, and the surface oxidizability of the briquette coal is lowered, thus the breakage rate in the briquette coal cooling process is reduced, the ball forming rate of the briquette coal is increased, the oxidizability of the briquette coal is improved, and the spontaneous combustion phenomenon is reduced. Compared with the prior art, the integrated briquette coal conveying, cooling and curing process and device have the characteristics of small floor area and high cooling efficiency; and by using the integrated briquette coal conveying, cooling and curing process and device, the dust flying condition in the conveying process can be effectively reduced, the surface of the briquette coal is solidified, and the spontaneous combustion probability caused during accumulation is reduced.

The invention discloses a foaming material for the inflaming retarding of an automobile interior panel. The foaming material comprises the following raw materials in parts by weight: 75-100 parts of polypropylene, 50-80 parts of polyurethane, 18-22 parts of chlorinated polyethylene, 12-18 parts of bromine containing phosphate, 10-26 parts of chlorinated paraffin, 60-90 parts of distilled water, 5-15 parts of a foaming agent and 2.5-7.5 parts of a stabilizer. Through the mode, the foaming material for the inflaming retarding of the automobile interior panel reduces the flammability of an automobile interior part, reduces the spontaneous combustion probability of an automobile in a high-temperature working environment, enhances the inflaming retarding and fire resisting performance of the automobile and reduces the occurrence of fire accidents.

The invention discloses a method for treating coal gangue heaps. The method for treating the coal gangue heaps includes the following steps that S1, a coal mine goaf stability zone is selected as a coal gangue treatment site; S2, 0.5 m-1.0 m of surface soil is stripped to be stacked near a goaf; S3, concrete is sprayed on the pit bottom and side of the goaf, shotcrete adopts P.C42.5 grade composite cement, and the quality ratio is 18%-25%; sand adopts medium sand, and the quality ratio is 30%-55%; gravel is hard and durable, the maximum particle size is less than 10 mm, and the quality ratio is 30%-45%; and S4, coal gangue is placed in the treated goaf, and the coal gangue backfill reaches 1.5m-1m below the ground treatment elevation. The method for treating the coal gangue heaps can solvethe problem that a large amount of coal gangue accumulates and occupies land to lead geological disasters; the coal gangue can be effectively avoided to pollute soil, the governance time is short, and the cost is low; and the method for treating the coal gangue heaps is suitable for popularization and application in the coal mine goaf, at the same time, coal gangue transportation is avoided, a lot of costs are saved, and at the same time, the spontaneous combustion of the coal gangue is avoided.

A disclosed generator set with a water cooling circulation device comprises a U-shaped plate, mounting grooves are formed in the two sides of the outer wall face of the U-shaped plate, meanwhile, a plurality of sets of heat dissipation mechanisms are sequentially arranged in the mounting grooves, each heat dissipation mechanism comprises a plurality of mounting lugs and a heat dissipation fan, and every four mounting lugs form a group; and each group of mounting lugs are respectively welded on the inner walls of the upper side and the lower side of each mounting groove, meanwhile, mounting holes are formed in the mounting lugs, and the heat dissipation fans are fixedly mounted on the mounting lugs through bolts. When the generator set works, a water suction pump on a water outlet in a water storage tank is started to pump out cooling water and inject the cooling water into a cooling water tank in the generator set, a water suction pump on a water inlet in the water storage tank is started to pump out hot water in the cooling water tank in the generator set, heat dissipation fans on the two sides of a U-shaped plate are started at the moment, and the heat dissipation fans are used for cooling the pumped hot water, so that water cooling circulation is realized.