42results about How to "Avoid direct burning" patented technology

The invention discloses a continuous and forced combined asphalt mixing production method, and belongs to the technical field of concrete processing. The method comprises the following steps: heatingcold aggregate to obtain hot aggregate, and carrying out hot mixing and / or cold mixing on a milling material to obtain a recycled material; mixing the hot aggregate, the recycled material, a powder and asphalt to obtain a premix; temporarily storing the premix in a pre-stirring storage bin, then allowing the premix to enter a forced stirring cylinder and be stirred, and temporarily storing an obtained finished product material in a finished product storage bin; and unloading the finished product material to a storage tank of a finished product conveying vehicle in a finished product material loading area. Generated asphalt flue gas and water vapor are introduced into a drying cylinder and undergo secondary incineration; collected dust enters a tail gas absorption and purification device and is purified; and the collected flue gas and air are introduced to a combustor part, and are used as a combustion-supporting gas. Direct combustion of the milling material by open fire is avoided; and the hot aggregate is slowly premixed with the recycled material, the powder and the asphalt, so the mixing efficiency is high, asphalt smoke leakage can be avoided, heat energy is utilized, and energy conservation and environmental protection are achieved.

The invention discloses a multi-scale particle reinforced plasma surfacing iron-based hypereutectic wear-resistant coating and a preparation method thereof, and belongs to the technical field of surface wear-resistant coatings. The plasma surfacing iron-based hypereutectic wear-resistant coating is prepared from the following components in a plasma surfacing mode, and wherein the components comprise, by mass, 48-69% of iron-based self-fluxing alloy powder, 30-50% of micron Cr3C2 powder, 0.5-1% of micron Ti powder, and 0.5-1% of nano Y2O3 powder. The preparation method of the plasma surfacing iron-based hypereutectic wear-resistant coating comprises the following steps of substrate pretreatment, preparation and drying of composite powder, preparation of the coating and post-heat treatment.By using the technical scheme, on the basis that hardness and wear resistance of the multi-scale particle reinforced plasma surfacing iron-based hypereutectic wear-resistant coating can be further improved, the process performance of the coating can be improved obviously, and cracks of the coating are effectively prevented.

The invention discloses a continuous and forced asphalt mixing production method, which belongs to the technical field of concrete processing, and comprises the following steps: heating cold aggregates to obtain hot aggregates; Recycled material is obtained after mixing; hot aggregate, recycled material, powder and asphalt are mixed to obtain premix; the premix is ​​temporarily stored in the pre-mixing storage bin and then mixed in the forced mixing tank, and the obtained finished material enters the finished product Temporary storage in the storage warehouse; in the finished material loading area, the material is unloaded into the storage tank of the finished material delivery vehicle. Pass the generated bitumen flue gas and water vapor into the drying cylinder for secondary incineration; the collected dust enters the exhaust gas absorption and purification device for exhaust gas purification treatment; at the same time, the collected flue gas and air are passed to the burner for use as combustion-supporting gas . The invention avoids the direct burning of the milling and planing material by an open flame; at the same time, the hot aggregate is slowly premixed with the recycled material, the powder material and the asphalt, the mixing efficiency is high, and at the same time, the leakage of the asphalt smoke can be avoided and the heat energy can be utilized, which is energy-saving and environment-friendly.

The invention discloses a plasma-surfacing iron-based Cr3C2 hypereutectic wear-resistant coating layer added with micrometer Ti and a preparation method thereof and belongs to the technical field of wear-resistant coating layers on the surfaces. The plasma-surfacing iron-based Cr3C2 hypereutectic wear-resistant coating layer is prepared from the following components in percent by mass after plasmasurfacing: 49%-69.5% of iron-based self-fluxed alloy powder, 30%-50% of micrometer Cr3C2 powder and 0.5%-1% of micrometer Ti powder. The plasma-surfacing iron-based Cr3C2 hypereutectic wear-resistantcoating layer is prepared by the following steps: pretreatment of base materials, preparation and drying of composite powder, preparation of the coating layer and post heat treatment. By use of the technical scheme disclosed by the invention, on the basis of improving the hardness and wear resistance of the plasma-surfacing iron-based hypereutectic wear-resistant coating layer enhanced by multiscale particles, the process characteristics of the coating layer can be obviously improved, and the generation of cracks of the coating layer can be effectively prevented.

The invention provides a combustion barrel and a fuel oil and fuel gas boiler. The combustion barrel comprises a combustion outer barrel body, a combustion middle barrel body, a combustion inner barrel body and a heat preserving and heat insulating barrel body; the combustion middle barrel body is fixedly arranged in the combustion outer barrel body; the combustion inner barrel body is fixedly arranged in the combustion middle barrel body; and the heat preserving and heat insulating barrel body is fixedly connected with one end of the combustion outer barrel body, and a combustion port is formed in the other end of the combustion outer barrel body. The technical scheme is adopted, the hot air utilizing rate of the fuel oil and fuel gas boiler can be effectively increased, and meanwhile theeffects of facilitating installing, disassembling and maintaining, preventing explosion and the like are achieved.

The invention discloses a corrugated metallic sheath inorganic mineral insulated cable and a manufacturing method thereof. The cable consists of an inner cable core, an insulating layer winding the outside of the cable core, and an outermost metallic sheath; the cable core is formed by twisting a bundle of copper wires, the insulating layer is an inorganic mineral insulated tape, the metallic sheath is a copper corrugated tube, corrugation of the copper corrugated tube has upper peaks and lower valleys, the cable core, the insulating layer and the copper corrugated tube have the same length, and the surface of the copper corrugated tube is provided with a welding seam with the same length of the copper corrugated tub along the axial direction. As the cable takes a corrugated shape, the cable is easy to be bent and mounted in a laying field, which lowers the construction cost, can prevent a cable conductor and the insulating layer from being directly burnt by flame, prevents a phase and phase conductor from short circuit, and prevents elevators and fire fighting devices from being incapable of operating without power supply, thus obtaining precious time to facilitate persons to escape in time, and reduce property loss.

The invention discloses a carbonaceous raw material fluidized bed pyrolysis product graded recovery system and a recovery method thereof. The recovery system comprises a fluidized bed pyrolysis reaction unit, an oil washing unit, a condensation recovery unit, a deep deoiling unit, a desulfurization and decarbonization unit and a low-carbon hydrocarbon removal unit. According to the system and themethod provided by the invention, high-temperature pyrolysis oil gas is sequentially subjected to the processes of oil washing, heat exchange condensation, deep deoiling, desulfurization and decarburization, low-carbon hydrocarbon removal and the like to respectively obtain heavy tar, medium tar, light tar, low-carbon hydrocarbon and pyrolysis dry gas products, so that the step-by-step recovery and purification of pyrolysis products are realized. And compared with the prior art, the use amount of water and the discharge amount of organic wastewater are greatly reduced, and the wastewater treatment cost is reduced.

The invention discloses an integrated downdraft biomass gasification power generation system, belongs to the technical field of biomass gasification power generation, and particularly relates to an integrated downdraft biomass gasification power generation system and method. The system comprises a hopper, a reactor, a slag barrel, a cyclone dust remover, an air preheater, an activated carbon adsorber, a gas fan, a torch, an air fan, a gas generator set, a pipeline, a ladder and a base, and is characterized in that the hopper, the air preheater, the cyclone dust remover, the slag barrel and thereactor are coupled into a compact whole, so that the heat efficiency of the whole system is greatly improved. The system is suitable for gasifying straw particles, wood chips, crushed coconut shellsand other carbonaceous biomass materials to generate combustible gas, and the combustible gas is conveyed into a gas engine to be combusted to push the engine to drive a generator to generate electric energy. The system is compact in structure, high in universality, high in energy utilization rate, reliable, convenient to use and easy to operate.

The invention relates to a porous inert support tubular solid oxide fuel cell with open ends, an electric stack and a preparation method thereof. The battery includes a porous inert support tube with openings at both ends and a porous inert support tube that is electronically connected but airtightly separated. The outer wall is coated with different functional sections: inlet gas isolation section, series battery section, thermal isolation section, and battery connection terminal. The gas isolation section is used to isolate air and fuel. A series battery section is a battery connected in series. The thermal isolation section places the external conductive connection of the battery outside the high temperature area. The battery connection terminal provides an external electrical connection terminal of the battery. The battery of the present invention forms a battery row through the battery connection terminals, and the battery row further forms a battery stack by connecting in series or in parallel. The invention can greatly reduce the cost of the solid oxide fuel cell, avoid the influence of thermal expansion on the battery and the battery stack, reduce the influence of high temperature on the conductive connection, facilitate the series and parallel connection of different batteries, and facilitate the assembly of the battery stack.

The invention discloses a tail gas recovery purification recycling device of an annealing furnace system. The tail gas recovery purification recycling device of the annealing furnace system is characterized by comprising components of an adsorption purification device, a circulation power device, a catalysis purification device or a deoxidizing device, a first cooling device, an air and water separator, and an adsorption drying device, and further comprising a pipeline connected among all the components, wherein all the components are sequentially connected through the pipeline, an air inlet of the adsorption purification device is connected with a tail gas outlet of an annealing furnace, an air outlet of the adsorption drying device is connected with an air inlet of the annealing furnace through the pipeline, and a first pressure adjustment device is arranged on the pipeline. The tail gas recovery purification recycling technology of the annealing furnace system is characterized in that tail gas sequentially passes through the adsorption purification device, the circulation power device, the catalysis purification device, the first cooling device, the air and water separator and the adsorption drying device from the tail gas outlet of the annealing furnace, and finally enters the air inlet of the annealing furnace through the first pressure adjustment device. The tail gas recovery purification recycling device and the tail gas recovery purification recycling technology of the annealing furnace system achieve purification treatment of the tail gas of the annealing furnace, and the tail gas after the purification treatment can be recycled, and therefore energy consumption is effectively reduced.

The invention discloses a heat-dissipating and flame-retardant adhesive tape, which comprises a base material, a heat conduction sheet bonded to the lower surface of the base material at equal intervals parallel to the length direction of the base material, an interlayer film pasted on the lower surface of the heat conduction sheet and coated on the insulation film. An adhesive layer on the lower surface of the film, a flame retardant layer bonded to the upper surface of the substrate, and a fire extinguishing agent filled between the heat conducting sheets. The invention has high heat dissipation efficiency, can effectively flame retard and extinguish flames, avoids damage to other components when the electronic components are short-circuited and catches fire, and can also prevent the external fire source of the adhesive tape from directly burning the electronic components.

The invention discloses a high-efficiency treatment device for medical waste, which includes a reaction chamber, a combustion chamber, a blower, a waste residue chamber and an oxygen-enriched air supply system. There is a filter screen between the waste chamber and the waste chamber, and a piston feeding device is installed on the upper side of the reaction chamber. In the reaction chamber, the medical waste is pyrolyzed under anoxic conditions to produce flammable gases and harmless residues, which are treated in the combustion chamber. The combustible gas is combusted, and the harmless residue is collected and processed to avoid direct combustion to produce harmful gas. The oxygen-enriched gas is delivered to the combustion chamber through the oxygen-enriched air supply system, and the oxygen content in the combustion chamber is adjusted to ensure that different combustible gases are fully charged. Combustion, the exhaust gas after full combustion is filtered by the exhaust gas treatment device and then discharged into clean air, which is harmless to the environment.