53results about How to "Promote pyrolysis reaction" patented technology

The invention provides a method for preparing activated carbon by using betel nuts and sludge as materials, which comprises the following steps: S1, raw material preparation: mixing betel nuts and sludge, and conducting drying, crushing and sieving to obtain betel nut and sludge mixed particles; S2, high-temperature carbonization: putting the mixed raw material into a tubular furnace, and performing carbonization initial treatment in a nitrogen atmosphere; S3, activator soaking: mixing the carbonized betel nuts and sludge mixed particles with an activating agent aqueous solution prepared from phosphoric acid, zinc chloride and water, and conducting soaking after even stirring, so as to obtain a mixed product; S4, high-temperature activation: putting the mixed product into a tubular furnace, conducting activating in a nitrogen atmosphere, and conducting cooling to obtain a crude product; and S5, obtaining of a finished product: carrying out acid pickling, water washing and drying on the crude product to obtain a target activated carbon product. The prepared betel nut sludge activated carbon has the advantages of abundant pore structures, large specific surface area, high iodine adsorption capacity, high yield and the like. The method has the characteristics of low energy consumption and simplicity in operation.

The invention belongs to the technical field of domestic waste treatment, and concretely relates to a domestic waste pyrolyzing and charring method. A certain amount of a charring promotion catalyst is added to domestic wastes, above materials are uniformly mixed, the obtained mixture is added to a pyrolyzing furnace, and the temperature and the time are controlled to obtain pyrolyzed coke. The cheap and easily available raw material is used as the charring promotion catalyst, so the carbon fixation rate in the waste pyrolyzing process is improved as possible, and formation of volatile organic products is inhibited, thereby harmless and reducing treatment of the domestic wastes is realized.

Disclosed is an anti-crystallization device for a carbamide nozzle of a selective catalytic reduction (SCR) system. The anti-crystallization device comprises a solenoid valve, a vortex tube assembly and a spray head assembly. A gas inlet of the vortex tube assembly is provided with the solenoid valve. One end of the vortex tube assembly is connected with the spray head assembly through a cool gas pipeline, and the other end of the vortex tube assembly is connected with the spray head assembly through a hot gas pipeline. The spray head assembly is further provided with a carbamide inlet. The tail end of the spray head assembly is provided with a carbamide nozzle orifice, a hot gas nozzle orifice and a cool gas nozzle orifice. The carbamide nozzle orifice is nested in the cool gas nozzle orifice. The cool gas nozzle orifice is nested in the hot gas nozzle orifice. Compressed gas can be transformed into cool gas flow and hot gas flow. The cool gas flow can be used for cooling components in the spray head assembly. The hot gas flow can be used for heating carbamide. The cool gas flow and the hot gas flow finally produce gas curtains through the nozzle orifices and the gas curtains isolate carbamide mist and high-temperature tail gas at the nozzle, and carbamide crystallization produced at the nozzle is avoided to the greatest extent. At the same time, cooling and heating effects are achieved in different positions simply and reliably; the production and maintenance cost of the system is low.

The invention belongs to the technical field of tire handling, and specifically relates to a waste tire handling technology. The technology comprises the following steps: S1, preprocessing, namely, cleaning a tire to remove dirt; S2, cutting the preprocessed tire into rubber blocks; S3, processing the rubber blocks for the second time; and crushing to obtain rubber scraps; and S4, feeding the rubber scraps into a reaction kettle; catalytically heating; distilling to obtain oil steam; processing the oily gas through a light and heavy component separating device; feeding a light component into acondenser; synchronously discharging carbon black during combustion; condensing to obtain liquid oil; conveying non-liquefied part into a heating system through a gas purifying system; combusting; removing dust of the waste gas produced in combustion through a dust removing system; and then discharging. According to the technology, the impurities on the tire can be cleaned by preprocessing; afterthe tire is cut into the rubber blocks, the rubber blocks are cooled and crushed under low temperature so as to obtain small rubber scraps; the rubber scraps are subjected to thermally decomposed, the inside is heated fast, so that the thermal decomposing reaction is correspondingly improved, and as a result, the yield of thermal decomposing oil is increased.

The invention relates to the technical field of waste plastic recycling, and particularly discloses a polyolefin waste plastic self-exothermic phase change thermal cracking process which comprises the following steps: placing polyolefin waste plastic in a high-pressure reactor, and introducing inert gas to replace air in the high-pressure reactor; inputting a phase construction agent into the high-pressure reactor, wherein the phase construction agent comprises inert gas with an initial pressure value greater than 0.5 MPa and/or hydrocarbon liquid with a boiling point lower than 125 DEG C; heating the high-pressure reactor to 340-380 DEG C, enabling the pressure value in the high-pressure reactor to be 2-6 MPa, subjecting the polyolefin waste plastic to a self-exothermic phase change thermal cracking reaction, and obtaining a thermal cracking product. The self-exothermic phase change of the polyolefin waste plastic long-chain hydrocarbon is realized by establishing a specific phase state condition, so that the thermal cracking reaction temperature is greatly increased, the deep cracking of the polyolefin waste plastic is promoted, and the energy consumption in the heat treatment process can be obviously reduced.

The invention relates to the technical field of iron and steel industry, solid waste and hazardous waste treatment and thermal cracking, in particular to a thermal cracking comprehensive utilization method for iron and steel industry solid waste and hazardous waste resources. Cracking raw materials obtained after pretreatment of iron and steel industry solid waste and hazardous waste resources enter a thermal cracking main machine through a feeding system and are heated to 200-600 DEG C in an air-isolated environment for a continuous thermal cracking reaction, and a high-temperature gaseous product and a solid product (ash residues) are generated; the high-temperature gaseous product generated by cracking passes through an oil-gas separation cooler to obtain a gaseous product (combustiblegas) and a liquid product (fuel oil); and flue gas discharged from an iron and steel industry solid waste treatment rotary kiln enters a rotary kiln flue gas treatment system, and the treated flue gasis discharged after reaching the standard. By adopting the method disclosed by the invention, the crackable solid waste and hazardous waste products in the iron and steel industry can be recycled andutilized in a high-valued manner, up-to-standard emission of waste gas and zero emission of waste water and waste residues are realized, and meanwhile, considerable economic benefits are obtained.

The invention discloses a smashing process of a biomass fuel, and belongs to the field of processing of biomass fuels. In the preparation method, straws are treated in different physical and chemicalaspects by ultrasonic soaking and hot rolling pretreatment, grinding pre-crushing, half anerobic roasting secondary treatment and ultrafine secondary crushing, the compactness of the straws is improved favorably, filling operation of crushing is facilitated, meanwhile, the crushing efficiency is improved, finally, ultra-fine crushing is centrifugal knife type crushing, air flow is generated in a crushing process, particles in small fineness are separated from particles in large fineness under the centrifugal effect, meanwhile, the particles in large fineness can be secondarily crushed, doubleeffects of separating and crushing are achieved, the crushed particles are uniform, and in the whole crushing process, an effect of increasing heat of combustion and energy density of the prepared biomass fuel is achieved.

The invention provides a method for producing oil by co-pyrolysis of house refuse and forestry and agricultural residues. According to the invention, the house refuse and the forestry and agricultural residues are crushed and dried, the materials are uniformly mixed according to certain proportion, a mixture is put into a pyrolysis reactor, the mixture is heat from room temperature to certain temperature under anoxic condition for pyrolysis, the mixture is stayed at pyrolysis final temperature for a while, the volatilization products are introduced into a condensation apparatus in a gaseous state, the non-condensing gas and pyrolytic coke are reburned for providing energy for pyrolysis and drying processes, the condensation gas is recovered as a pyrolysis solution, the pyrolysis solution is subjected to oil-water separation to obtain the pyrolysis oil and water-soluble liquid, the pyrolysis oil is used as the fuel oil, and the water-soluble liquid is used as a chemical raw material. The co-pyrolysis mode is employed for processing house refuse and forestry and agricultural residues, the self-sufficient heat energy problem required for pyrolysis of house refuse can be solved, synergism is generated during co-pyrolysis of house refuse and forestry and agricultural residues, the pyrolysis oil yield is increased, and synergism can generate good social benefit and economic benefit.

A self-weight spiral progressive type high-efficiency and energy-saving biomass pyrolysis furnace device comprises a pyrolysis furnace and an air cooler, a closed cavity is formed between the outer box body (16) and the inner box body (17) of the air cooler, a closed cylindrical shell (18) is arranged in the inner box body (17), a plurality of layers of air cooling flow deflectors (19) are arranged between the inner box body (17) and the cylindrical shell (18), an opening at one end of every air cooling flow deflector (19) is communicated with the inner chamber of the cylindrical shell (18), and an opening at the other end of the air cooling flow deflector (19) is communicated with the cavity between the outer box body (16) and the inner box body (17); and an inner cylinder (2) and an outer cylinder (3)are arranged in the inner part of the furnace body (1) of the pyrolysis furnace, a conical distributor (4) is arranged at a position, corresponding to the charging port of the furnace body (1), of the top of the inner cylinder (2), and a pyrolysis gas secondary pyrolysis tube (5) is arranged in the inner cylinder (2). The device has the advantages of heat transfer and interaction, high heat utilization efficiency, and realization of cascade utilization of energy.

The invention discloses a reaction apparatus of a microwave pyrolysis biomass. The reaction apparatus comprises a microwave pyrolysis unit, the microwave pyrolysis unit comprises a microwave thermal decomposition furnace, and at least a feed inlet arranged outside the microwave thermal decomposition furnace, the microwave thermal decomposition furnace comprises a solid-phase pyrolysis part and a gas-phase pyrolysis part connected in order from down to up, the solid-phase pyrolysis part comprises a solid-phase hollow circular column composed of metal mesh, and the solid-phase hollow circular column is filled with a solid-phase microwave absorbent and a catalyst. The reaction apparatus increases the pyrolysis heating rate, reduces the generation amount of solid carbon residue, increases theproportion of pyrolysis gas in products, and optimizes the pyrolysis reaction process, has the advantages of simple equipment, less land occupation, and convenient operation, can complete operation ofcontinuous feeding and deslagging, and is convenient for operation and management.

The invention relates to a progresasive high-efficiency energy-saving biomass pyrolyzing furnace. An internal barrel (2) and an external barrel (3) are arranged in a furnace body (1), a conical distributor (4) which corresponds to the feed inlet of the furnace body (1) is arranged on the top of the internal barrel (2), a secondary pyrolyzed gas pyrolysis pipe (5) is arranged in the internal barrel(2), the cavity of the internal barrel (2) is not communicated with the cavity of the secondary pyrolyzed gas pyrolysis pipe (5), the top of the secondary pyrolyzed gas pyrolysis pipe (5) is an outlet, the bottom of the secondary pyrolyzed gas pyrolysis pipe (5) is an inlet, the upper part of the furnace body (1) is provided with a pyrolyzed gas outlet (6) and an exhaust gas outlet (7), the lowerpart of the furnace body (1) is provided with a hot exhaust gas inlet (8), the outlet of the secondary pyrolyzed gas pyrolysis pipe (5) is communicated with the pyrolyzed gas outlet (6), and both theexhaust gas outlet (7) and the hot exhaust gas inlet (8) are communicated with the cavity of the internal barrel (2). Heat transfers interact with each other, the efficiency of heat utilization is high, and gradient energy utilization is realized.

The invention discloses a method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus. The method comprises: peeling fast-growing eucalyptus, cutting into eucalyptussheets with a length of 10-15 mm, a thickness of 3-5 mm and a width of not more than 10 mm, carrying out air drying, carrying out sealed storing, balancing the moisture, adding ultrapure water, regulating the pH value of the mixed material to 3-9, reacting for 10-90 min at 140-180 DEG C, and separating the eucalyptus sheets from the reaction solution after the reaction is finished so as to obtainthe eucalyptus sheets free of potassium ions, calcium ions and magnesium ions. According to the invention, in a research process, innovatively hydrothermal pretreatment can remove metal ions from eucalyptus, so that potassium, calcium and magnesium in fast-growing eucalyptus are efficiently removed by utilizing an environment-friendly hydrothermal pretreatment process so as to easily achieve thesubsequent lignocellulose pyrolytic reaction, achieve the high-valued utilization of lignocellulose and provide a new thought for controlled obtaining of chemical components of the bio-oil.

The invention aims to provide a biomass pyrolysis horizontal converter with a bearable sealing structure. According to the horizontal converter, pyrolysis and drying are completed in the same furnace;internal components of a converter barrel are simple and concise, the sealing performance between the horizontal converter and a static part is good; a bearing piece of a horizontal converter cylinder body does not need to be additionally arranged; installation, maintenance and replacement are simplified. The converter comprises a converter cylinder body, a front end socket arranged at the frontend of the converter cylinder body and a rear end socket arranged at the rear end of the converter cylinder body, wherein two ends of the cylinder body respectively extend into the front end socket and the rear end socket and are in relatively rotatable sealing connection with the front end socket and the rear end socket; a pyrolysis pipe for circulating heating gas is arranged in the cylinder body; the bottom of the front end socket is communicated with an exhaust pipe used for exhausting tail gas; a combustor is arranged at the bottom of the interior of the rear end socket; an air blower isfurther installed on the rear end socket, and the air blower is used for blowing heat energy generated by combustion of the combustor into the pyrolysis pipe.

The invention relates to a pulverized coal pyrolysis furnace with uniform material and pressure-bearing structure, which mainly includes: a furnace body, a radiant tube, and a material-leveled and pressure-bearing structure, wherein the multi-layered radiant tube is arranged in the furnace cavity and forms a hollow In the gear area, the uniform material and pressure-bearing structure is arranged in the neutral gear area, and the uniform material and pressure-bearing structure includes: a support part, a distribution cap and a connecting part, wherein the support part is arranged along the horizontal direction; the The head of the material distribution cap is arc-shaped, and the bottom of the material distribution cap is arranged on the support part; the connecting part is fixed on the furnace wall, and is respectively connected to the two sides of the support part through pin shafts. The ends are connected, and the supporting part is fixed on the furnace wall. In the present invention, by arranging material distribution and pressure-bearing structures in the neutral area, the pulverized coal can be evenly divided and buffered, and the impact loss of the pulverized coal to the equipment and the furnace body collided; at the same time, the furnace body is strengthened. Furnace operating pressure bearing capacity, has the function of stabilizing the furnace body.

The invention relates to a self-heating vertical axial flow roller ablation pyrolytic reaction device, and belongs to the technical field of renewable energy utilization. The device comprises a shell and a reaction cylinder arranged in the shell, a rotating shaft is arranged in the reaction cylinder, the upper end of the rotating shaft is connected with a variable frequency motor through a belt, the rotating speed of the rotating shaft can be adjusted, a first-stage spiral feeder and a second-stage spiral feeder are arranged outside the shell, the discharging end of the first-stage spiral feeder is communicated with the feeding end of the second-stage spiral feeder, and the discharging end of the second-stage spiral feeder is communicated with the upper part of the reaction cylinder. The device has the beneficial effects that the pyrolysis efficiency is improved, pushing of carrier gas and heating of a heat carrier are not needed in the reaction process, and the heating and cooling loads of the carrier gas are greatly reduced. Self-heating in the pyrolysis process is achieved, and effective utilization of energy is fully achieved. Different taper angles can adapt to the change of the size of the material, powdery, granular and other biomass raw materials can be pyrolyzed, and gas-solid separation and biomass pyrolysis can be better achieved.

The invention belongs to the technical field of regenerative oil furnaces, and discloses a vertical type regenerative oil furnace. The vertical type regenerative oil furnace comprises a furnace body,wherein a trough barrel is arranged in the furnace body; and the top of the trough barrel extends out of the furnace body and is welded with the lower surface of a special-shaped supporting plate. According to the vertical type regenerative oil furnace, by measures of regulating the number of movable scraping cake assemblies, regulating rotation speed of a scraping mechanism and the like, mechanical movement speed of materials on a trough bottom plate (furnace bed) is regulated, and retention time of the materials in the trough barrel (furnace hearth) is precisely controlled, so that retentiontime of the materials in each temperature section (a temperature control section is formed by several sections of furnace hearths) can be realized, and retention time of the materials in each furnacehearth also can be controlled; and a gentle material stirring and turning method is adopted, so that abrasion of products is reduced, uniformity of the products can be guaranteed, a mass transfer process is facilitated, great contribution is made to distribution characteristics of temperature in the whole furnace hearth, and sufficient reaction conditions of the materials are guaranteed.

The invention relates to a calcium carbide production system provided with an adjustable pyrolyzing furnace and a calcium carbide production method. The system comprises the adjustable pyrolyzing furnace, an oxygen thermal method calcium carbide furnace and an oxygen lance, wherein the adjustable pyrolyzing furnace comprises a limestone powder feeding inlet, a pulverized coal feeding inlet, a discharge outlet and a flue gas inlet; dip angle adjustable baffles are arranged in a hearth of the adjustable pyrolyzing furnace; gaps are reserved between the baffles and the inner walls of the adjustable pyrolyzing furnace; small holes are formed in the baffles; the oxygen thermal method calcium carbide furnace comprises a feeding inlet, a flue gas outlet and a discharge outlet; a nozzle of the oxygen lance is arranged in the oxygen thermal method calcium carbide furnace; and the oxygen lance stretches into the oxygen thermal method calcium carbide furnace from the top of the oxygen thermal method calcium carbide furnace. The calcium carbide production system provided with the adjustable pyrolyzing furnace and the method have the beneficial effects that the reaction time of the raw materials in the furnace can be conveniently controlled by arranging the dip angle adjustable baffles in the adjustable pyrolyzing furnace, thus ensuring the raw material reaction degree and efficiency.