36results about How to "Shorten pyrolysis time" patented technology

The invention discloses a method for producing needle coke by adopting the technique combining delay coking and kettle-type coking. The method comprises: when treating the conventional coking raw material by using the delay coking technique, introducing FCC slurry oil into a delay coking tower from the upper part inside the tower at the low temperature, and obtaining needle coke raw material by fractionating high temperature oil gas obtained by the reaction; and then, treating the needle coke raw material by using the kettle-type coking technique, and obtaining high quality needle coke. In the method, as the FCC slurry oil is injected into the coking tower at the lower temperature, the decomposition temperature of the conventional coking raw material is lowered, the high temperature decomposition time of the raw material is shortened, the occurrence of secondary reaction is reduced, green coke rate is reduced, the stable operation cycle of a signal tower is prolonged, and light components which have high reaction activity and are not beneficial to producing the needle coke, heavy components with high polymerization activity, and a great deal of impurities such as catalyst powder, heavy metal and the like can be removed. The obtained needle coke has high yield and good quality.

The invention discloses a method for accelerating the microwave pyrolytic process of oily sludge by pyrolyzing residue thereof, which comprises the following steps: carrying out microwave pyrolysis on the oily sludge or sludge under the condition of nitrogenization, controlling the temperature to be 700-850 DEG C and performing microwave incineration for 5-15min to obtain solid microwave residue; mixing the microwave residue with the oily sludge or the sludge evenly, wherein the weight of the microwave residue is 0.5-5% of the oily sludge or the sludge; and then carrying out microwave pyrolysis on the oily sludge or the sludge under the condition of nitrogenization. The invention can accelerate the pyrolytic process of the oily sludge or the sludge, shorten the pyrolytic time, effectively save the energy consumption of the oily sludge or the sludge processing, and improve the processing efficiency; the residue after the microwave pyrolysis can be recycled; and the method of the invention has low cost, is economical and can be popularized and utilized.

The invention discloses a method for producing a needle coke raw material by using a delayed coking process. In the method, full-range coal tar is imported to the top and the middle and a high-temperature conventional coking raw material is imported to the bottom; the high-temperature oil gas generated by the conventional coking raw material via high-temperature cracking is mixed with the full-range coal tar with lower temperature at the top and the middle of a reactor so that the full-range coal tar can crack hydrocarbon molecules with high reaction activity at a proper high temperature to achieve the aim of desorption; for the full-range coal tar, under the condition of the delayed coking process, asphaltene and partial colloid are condensed to form coke which is deposited in a coking tower so as to remove the components going against the production of the needle coke; furthermore, by means of the injection of the low-temperature full-range coal tar, the cracking temperature of the conventional coking raw material is reduced, the high-temperature cracking time of the conventional raw material is shortened, the secondary reaction is decreased, the coke generation rate is reduced and the stable operation period of a single tower is prolonged.

The invention discloses a device and method for preparing activated coke by pyrolysis of domestic waste. The device mainly comprises a drying rotary kiln, a microwave pyrolysis furnace, a pyrolysis gas combustion chamber, an air preheater, a steam generator, a coke sample activation furnace and a flue gas purification tower; the drying rotary kiln is connected with the microwave pyrolysis furnace,and a flue gas outlet is connected with the flue gas purification tower, an induced draft fan and a chimney through a pipeline; the microwave pyrolysis furnace is connected with the induced draft fanand the pyrolysis gas combustion chamber through a pipeline, a flue gas outlet of the pyrolysis gas combustion chamber is connected with the air preheater, one way of the air preheater is connected with a hot-air inlet of the pyrolysis gas combustion chamber, and the other way is connected with the drying rotary kiln; and a storage chamber is connected with the coke sample activation furnace, a flue gas outlet of the coke sample activation furnace is connected with the microwave pyrolysis furnace through a gas bypass, and the coke sample activation furnace is connected with the steam generator. The device provided by the invention is adopted to pyrolyze the domestic waste, the efficiency is high, and emission is concentrated; and the device can further prepare high-quality activated cokeand complete large-scale treatment of the domestic waste.

The invention discloses a remediation method for chromium slag or chromium contaminated soil. The remediation method comprises the following steps: mixing the chromium slag or chromium contaminated soil with semi-coke; performing thermal treatment at the temperature of 400 to 1600 DEG C; and allowing pollutants in the chromium slag or chromium contaminated soil to have a reduction reaction at a high temperature to obtain non-contaminated soil, wherein the thermal treatment is performed under the protection of one or both of an inert gas and a reductive gas. According to the remediation method disclosed by the invention, the semi-coke is utilized for strengthened reduction of chromium in the chromium slag or chromium contaminated soil; the semi-coke can play a reduction effect on hexavalent chromium and can also improve soil, sequestrate carbon and treat wastes. The remediation method has the advantages of being high in chromium reduction efficiency, low in energy consumption, economical, feasible, environmentally friendly and the like, and has quite good application prospects.

The invention provides a grinding-disc pyrolysis reactor. A main body of the grinding-disc pyrolysis reactor consists of an upper furnace plate, a distributing plate, dust boards and scraping plates which are rotatable around a feeding pipe, and a lower furnace plate and a furnace wall which are fixed, wherein a the feeding pipe is arranged in the center of the furnace plate, and the distributing plate is arranged at the bottom of the furnace plate; a circle of dust boards and a pair or a plurality of pairs of scraping plates are arranged at the periphery of the distributing plate; a water seal or a sand seal is arranged between the upper furnace plate and the feeding pipe as well as the upper furnace plate and the furnace wall; the distributing plate is a mosaic grinded surface with a plurality of radial tooth grooves formed in the mosaic grinded surface, and through the rotation of the distributing plate, material distributing, turning and discharging functions can be achieved simultaneously; and the lower furnace plate is a flat thermal storage heating stove. The reactor is simple in structure, reliable in operation, convenient to maintain, large in productive capacity, wide in raw material adaptability, and especially suitable for pyrolysis of low metamorphic coal, oil shales, oil sand, biomasses, junked tires, plastic, garbage and the like.

The invention discloses an efficient and energy-saving self-weight spiral progressive biomass pyrolysis system which comprises a pyrolysis furnace, a material distribution tank (23), an air cooler anda water cooling system, wherein an outlet of the material distribution tank (23) communicates with the material feeding hole of the pyrolysis furnace; a biomass charcoal outlet in the bottom of the pyrolysis furnace communicates with a material inlet in the upper part of the air cooler; a material outlet in the lower part of the air cooler communicates with the material feeding hole of the watercooling system; an inner cylinder (2) and an outer cylinder (3) are arranged in the middle inside the furnace body (1) of the pyrolysis furnace; a conical material distributor (4) is arranged at the top, corresponding to the material feeding hole of the furnace body (1), of the inner cylinder (2); a pyrolysis gas secondary pyrolysis tube (5) is arranged in the inner cylinder (2); the outlet of thepyrolysis gas secondary pyrolysis tube (5) communicates with a pyrolysis gas outlet (6); both a flue gas outlet (7) and a hot flue gas inlet (8) communicate with an inner cavity of the inner cylinder(2). Mutual actions of heat conduction are achieved, high heat utilization efficiency is achieved, and gradient utilization of energy is achieved.

The invention relates to a charcoal preparation apparatus, and especially relates to a closed charcoal preparation apparatus. A technical scheme is characterized in that the apparatus comprises a temperature controller (1), a heater box (2) and a pyrolysis tank (9), and when charcoal is prepared, organic matters enter the pyrolysis tank (9), a lid (8) at the upper portion of the pyrolysis tank (9) is screwed up, the pyrolysis tank (9) is put in the heater box (2), and heating pyrolysis is carried out. The heater box is opened after the pyrolysis reaction, the pyrolysis tank (9) is cooled to room temperature, and then the prepared charcoal is taken out. The apparatus has the characteristics of ingenious conception, reasonable design, and realizes reduction of the pyrolysis temperature, shortening of the organic matter pyrolysis time and increase of the charcoal preparation efficiency by preparing charcoal through pyrolysis of organic substances in closed environment; and the apparatus can ensure anaerobic environment and improve the charcoal production rate through pyrolysis of the organic matters in a closed tank.

The invention discloses a vacuum pyrolysis treatment and recovery method for retired fan blades, which comprises the following steps: (1) blade pretreatment: crushing the retired fan blades, adding a pyrolysis catalyst, and uniformly mixing; then, the combustion flue gas subjected to high-temperature treatment is introduced for preheating treatment; (2) vacuum pyrolysis: carrying out catalytic pyrolysis treatment on the pre-treated retired fan blade in a vacuum negative pressure state to obtain pyrolysis gas, pyrolysis oil and pyrolysis residues; (3) carrying out eddy current separation on the pyrolysis residues to obtain metal, and carrying out wind separation to obtain pyrolytic carbon, a fiber material and pyrolysis residues; (4) cooling and denitrifying the combustion flue gas generated in the step (1); and (5) removing dust and bromine from the cooled and denitrified combustion flue gas. According to the method, the retired fan blade can be efficiently treated, and resources such as fiber materials and metal in the retired fan blade can be recycled.

The invention discloses a high-temperature nitrogen pyrolysis treatment and recovery method for retired fan blades, which comprises the following steps: (1) blade pretreatment: crushing the retired fan blades, adding a pyrolysis catalyst, and uniformly mixing; (2) nitrogen heating: heating nitrogen under a high-temperature condition to obtain high-temperature nitrogen; (3) performing high-temperature pyrolysis on the pre-treated retired fan blade in a high-temperature nitrogen atmosphere to obtain pyrolysis gas, pyrolysis oil and pyrolysis residues; (4) carrying out eddy current separation on the pyrolysis residues to obtain metal, and carrying out wind separation to obtain pyrolytic carbon, a fiber material and pyrolysis residues; (5) cooling and denitrifying the combustion flue gas generated in the steps (2) and (3); and (6) removing dust and bromine from the cooled and denitrified combustion flue gas. According to the method, the retired fan blade can be efficiently treated, and resources such as fiber materials and metal in the retired fan blade can be recycled.

The invention provides an exothermic catalytic combustion method for a pyrolysis gasification submelting furnace under pure oxygen conditions, which is characterized in that pure oxygen is directly introduced into the pyrolysis gasification submelting furnace for pyrolysis after the ignition. During the pyrolysis, catalysts, namely magnesium powder, aluminum powder or a mixture of the magnesium powder and the aluminum powder is added from the furnace bottom, and the adding amount of the catalysts is between 0.1 and 1.0 kg for each ton of treated substance. During the pyrolysis gasification, the pressure in the furnace is adjusted by adjusting the opening degree of a rectification mechanism to ensure that the pressure inside the pyrolysis furnace is stable. The method has the advantages of low cost, energy conservation, and environmental protection.

The invention relates to a garbage pyrolyzer, which comprises an outer jacket, a furnace body, shaft-free screws, an inner heating pipe, a pyrolyzer heat preservation device, an end cover, a motor andthe like, wherein a pyrolysis chamber is arranged in the pyrolyzer, a material inlet and a pyrolysis gas outlet are formed in the upper portion of the pyrolysis chamber, a pyrolysis residue outlet and a heating medium gas inlet is formed in the lower end of the pyrolysis chamber, the two groups of the shaft-free screws play role in stirring and propelling in the pyrolyzer, and a gas discharge port is connected with a gasification device through a pipeline. According to the invention, the garbage pyrolyzer has the advantages of high reliability, short pyrolysis time, high efficiency, good effect, obvious decrement, low pollution, compact structure, convenient use and the like, and has wide market prospects in future garbage rear-end treatment.

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 method for processing high-acid crude oil by a delayed crude oil process. In the method, low-temperature high-acid crude oil enters the upper part of a reactor; high-temperature low-acid coking raw material enters the bottom of the reactor; a high-temperature oil gas generated from the low-acid coking raw material through pyrolysis is mixed with the low-temperature high-acid crude oil on the upper part of the reactor; therefore, the high-acid crude oil is pyrolyzed and deacidified at an appropriate high temperature so as to fulfill the aim of deacidification; and simultaneously, the injection of the low-temperature high-acid crude oil reduces the cracking temperature of the low-acid coking raw material, shortens the pyrolysis time of a low-acid raw material, and reduces secondary reactions, thereby reducing the coke formation rate and prolonging the stable operating period of a single tower. The delayed coking method for processing the high-acid crude oil hasthe characteristics that the preheating temperature of the high-acid crude oil can avoid a strong corrosion phase of an acid, and can reduce or even avoid the corrosion of the acid on heating equipment even below a corrosion temperature.

The invention discloses a method for comprehensively recovering all components of a waste crystalline silicon photovoltaic module. The method comprises the following steps: (1) pre-disassembling a collected waste crystalline silicon photovoltaic panel to obtain an incomplete panel and a complete panel; (2) cutting the incomplete plate into blocks, performing rotary vacuum pyrolysis to obtain first hydrogen-containing pyrolysis gas and pyrolysis residues, and sorting the pyrolysis residues to obtain glass residues, a first soldering tin conduction band, photovoltaic cell panel fragments and first pyrolysis ash residues; and (3) carrying out movable microwave enhanced pyrolysis on the complete plate to obtain second hydrogen-containing pyrolysis gas and a pyrolysis plate, carrying out component separation on the pyrolysis plate to obtain a complete photovoltaic cell silicon wafer, a complete glass plate, a second soldering tin conduction band and second pyrolysis ash, mixing the second pyrolysis ash with the first pyrolysis ash, and carrying out nitric acid leaching, and leaching residues and a precious metal-containing acid leaching solution are obtained. The method realizes all-component high-valued recovery of the waste crystalline silicon photovoltaic module, and has the characteristics of high comprehensive utilization rate of resources, short process flow, no flue gas pollution and the like.

The invention discloses an integrated device and method for preparing an oil product and synthetic gas from fine coal. The integrated device comprises an integrated reaction system, a cycle feeding-back system and a deep-separation purification system. The integrated reaction system comprises a gasification section and a fast pyrolysis section. The gasification section is an oxygen or air blast turbulent flow fluidized bed gasification furnace. Bed layer height and density are not kept by a low fluidization speed but by a high air-flow speed and a high solid cycle speed. The gasification section utilizes carbon obtained by the fast pyrolysis section. Synthetic gas produced by the gasification section and solid particles carried by the synthetic gas are used as heat sources of the fast pyrolysis section. The fast pyrolysis section is a cycle fluidized bed reactor. The cycle material in the fast pyrolysis section and gas and solid particles in the gasification section are mixed, and then temperatures of the two material flows are basically approximate to the heat-stage temperature so that just added coal does not contact with high-temperature gas and particles from the gasification furnace in the heat stage.

The invention discloses an energy-saving rosewood straightening process, which comprises the following steps: a, soaking rosewood in a flitch form by using a hydrochloric acid solution with a concentration of 20-30% for 80-100 h to obtain a product A; b, soaking the product A with ammonia water until the wood acidity of the product A reaches 6.5-7 to obtain a product B; c, soaking the product B inflowing water for 2-4 days to obtain a product C; d, heating the product C in a steam box for 2-3 hours to obtain a product D; and e, straightening the product D to obtain a finished product, whereinin the step C, the product B is soaked in flowing water for 2-4 days to obtain a product C1, and the C1 product is air-dried to achieve the moisture content of the C1 product of 12-18% so as to obtain the product C. The process has the advantage of low energy consumption.