31results about How to "Improve pyrolysis gasification efficiency" patented technology

The invention discloses a plasma gasification refuse disposal method and a device, comprising a pyrolysis gasification unit, a quench tower and a turbulent tower. A pyrolysis gasification furnace, an expansion reaction chamber, the quench tower and the turbulent tower are sequentially connected by a channel to form a vertically-alternate curve manifold gas channel. More than two of alternating-current plasma torches are arranged on the wall of the pyrolysis gasification furnace, and an air supply pipe is arranged on the alternating-current plasma torch. The axial lines of the alternating-current plasma torches are tangent with concentric circle taking the axial line of the pyrolysis gasification furnace as the center; a low-power alternating-current plasma torch is arranged on at least one of the expansion reaction chamber or the gas channel of the expansion reaction chamber and the quench tower to perform secondary pyrolysis. The quench tower is used for cooling gas, and the turbulent tower is used for desulfurizing and purifying gas. The invention uses the plasma technology to perform industrial gasification to the municipal solid waste so as to obtain usable gas; and the emission can achieve the environmental standards.

The invention relates to a solid waste two-stage pyrolysis gasification system based on a fluidized bed and a moving bed. The system comprises a circulating fluidized bed vaporizer and a secondary cyclone separator thereof, a pyrolyzer and a cyclone separation type reactor thereof, a charcoal collector, a solid waste feed system and the like. The circulating fluidized bed vaporizer and the pyrolyzer of the moving bed are used to realize two-stage pyrolysis gasification, and the cyclone separation type reactor is used to sufficiently mix hot bed materials and pyrolysis gas, thus greatly promoting tar splitting and gas purification. Through optimally designing the vaporizer and pyrolyzer structure form, mixing different bed materials for use, improving a bed material circulation flow system and gas solid mixing level, and improving the feed system, synthesis gas and the pyrolysis gas are produced simultaneously, the overall pyrolysis gasification efficiency and a pyrolysis gas heat value are greatly improved and increased, tar content in the synthesis gas and the pyrolysis gas is reduced, and the synthesis gas and the pyrolysis gas do not contain pollutants such as dioxin, thus effectively preparing the high-quality clean pyrolysis gas and synthesis gas.

The invention discloses a three-bed combination pyrolysis gasification and tar cracking integrated system for solid waste and belongs to the technical field of solid waste treatment. The system comprises a solid waste feeding system, a pyrolyzer, an oxidizer system, an oxidizer cyclone separator and a cyclone reactor. According to the system, the circulating flow of bed materials among three bed is realized by virtue of a circulating fluidized bed oxidizer, a bubbling or turbulent fluidized bed pyrolyzer and the cyclone reactor which are combined with a gas stripping tube and a sedimentation tube, and the adequate mixing between the hot bed materials and pyrolysis gas is realized by virtue of the cyclone reactor, so that the tar cracking and the gas purification are greatly promoted; by virtue of structural optimization of an oxidizer and the pyrolyzer, the mixed use of different bed materials and the improvements of a bed material circulating flow system, the gas-liquid mixing level and a feeding system, the integral pyrolysis gasification efficiency is greatly improved, the heat value of product gas is greatly increased, the tar content of product gas is greatly reduced, and high-quality clean pyrolysis gas/synthesis gas is prepared.

The invention discloses a pyrolysis gasification catalyst which comprises the following components: 35 to 50% of calcium oxide, 10 to 20% of zirconium oxide, 15 to 25% of titanium dioxide, 15 to 25% of sodium bicarbonate and 10 to 20 % of citric acid. The components are crushed to form a mixture; the present invention also discloses a papermaking waste treatment process comprising 1) crushing: crushing papermaking waste into flocculent; 2) dehydration: reducing the water of the papermaking waste to 20-40% ; 3) adding: adding the pyrolysis gasification catalyst accounting for 3-5% of the mass of the papermaking waste; 4) mixing: uniformly mixing the papermaking waste and the catalyst; 5) drying: controlling the water of the mixed material to 15-25%; 6) pelletizing: obtaining organic-matter-derived fuel particles; 7) cooling: cooling the particles to room temperature; 8) pyrolyzing and gasifying: pyrolyzing and gasifying the particles at 600-800 DEG C under micro-oxygen conditions of the air equivalence ratio of 0.1-0.28; and 9) gas separation: removing wood tar from mixed fuel gas through purification; and the pyrolysis gasification catalyst can effectively improve the gasification efficiency of the fuel particles and fuel gas production, can neutralize corrosive gases, greatly improves sludge utilization rate, and effectively protects the environment.

The invention discloses a pyrolysis gasification garbage treatment system and a garbage treatment system, and relates to the field of garbage treatment. The pyrolysis gasification garbage treatment system comprises a garbage drying room, at least two pyrolysis ovens, a secondary combustion chamber and a heat exchanger, each pyrolysis oven comprises a feeding portion and a combustible gas discharging portion, garbage is transferred into the pyrolysis ovens by the feeding portions and subjected to pyrolysis gasification, the secondary combustion chamber comprises a combustion inlet and a combustion outlet, the combustion inlet is communicated with the combustible gas discharging portions of the pyrolysis ovens, a gas inlet of the heat exchanger is connected with the combustion outlet, a heat exchange pipeline of the heat exchanger is connected with the garbage drying room, and heat discharged by the combustible gas discharging portions is converted into heat for drying the garbage by the garbage drying room through the heat exchanger. The pyrolysis gasification garbage treatment system is high in pyrolysis gasification efficiency, the purification efficiency of poisonous gas is improved through the secondary combustion chamber, and energy consumption of pyrolysis gasification is reduced.

The invention relates to a two-stage biomass pyrolysis gasification rotary bed and a pyrolysis gasification method. The shell of the rotating bed is ring-shaped, and the shell includes a furnace roof, a circumferential furnace wall and a furnace pan. The furnace roof and the circumferential furnace wall are fixedly connected, and the furnace pan can rotate horizontally relative to the furnace roof and the circumferential furnace wall; The furnace is divided into two sections along the circumference: the first gasification section and the second gasification section, both of which include a drying zone, a pyrolysis zone, an oxidation zone and a reduction zone connected in sequence in the circumferential direction, and the reduction zone of the first gasification section and the The drying area of ​​the second gasification section is connected with a first partition, the reduction area of ​​the second gasification section is connected with the drying area of ​​the first gasification section and a second partition is provided; The first air inlet, the second air inlet, the first gasification gas outlet, the second gasification gas outlet, the first feed port, the second feed port, the first ash outlet, and the second ash outlet. The invention improves the productivity of the gasification furnace and the quality of the pyrolysis gas, and realizes the continuous feeding and operation on the disk.

The invention relates to a domestic rubbish disposal system based on a pyrolysis gasifier and a tunnel brickkiln. The domestic rubbish disposal system comprises a feeding and drying device, the pyrolysis gasifier, a brick making system and the tunnel kiln. The heat tunnel kiln comprises a preheating segment, a combustion segment and a cooling segment. A first exhaust opening of the preheating segment communicates with a gas inlet of the feeding and drying device. A gas outlet of the feeding and drying device communicates with a first gas inlet of the combustion segment. A second gas outlet ofthe preheating segment communicates with a gas inlet of the pyrolysis gasifier. An exhaust opening of the pyrolysis gasifier communicates with a second gas inlet of the combustion segment. The temperature of the combustion segment is controlled to be 1,000 DEG C, and an air supply pipeline is further connected to a connecting pipeline between the combustion segment and the pyrolysis gasifier. According to the domestic rubbish disposal system and method based on the pyrolysis gasifier and the tunnel brickkiln, dioxin generated by rubbish combustion can be removed thoroughly, generated ash can be cyclically utilized, and the harmless conversion rate is high.

A material-distributing device for a refuse pyrolysis gasification furnace is arranged between a hydraulic feeder and a feeding port of the pyrolysis gasification furnace. According to the material-distributing device for the refuse pyrolysis gasification furnace, a transmission screw is flatly placed on a cylindrical transmission tooth and connected with a material-distributing mesh screen through a transmission pulley, the material-distributing mesh screen is of a cone frustum type and is placed above the feeding port of the pyrolysis gasification furnace, the middle of the material-distributing mesh screen is provided with a feeding port and a material-distributing outlet, and the edge of the material-distributing mesh screen is provided with a plurality of mesh screen holes. The material-distributing device is suitable for material distribution of refuse derived fuel (RDF) and can achieve the integrated operation process of material feeding and material distribution and improve refuse pyrolysis gasification quality.

The invention discloses a garbage pyrolysis gasification furnace and a method. The garbage pyrolysis gasification furnace comprises a furnace body, a moving device arranged at the top of the furnace body and a discharging mechanism connected with the moving device, the moving device drives the discharging mechanism to reciprocate in the length direction of the feeding port of the furnace body, and the discharging mechanism communicates with the furnace body so that garbage in the discharging mechanism can enter the furnace body, the furnace body is used for pyrolyzing entering garbage, a rotary shifting mechanism is arranged in the furnace body, an ash bin is arranged on one side of the furnace body, a baffle component is arranged on the side face, close to the ash bin, of the furnace body, and the discharging mechanism, the moving device and the rotary shifting mechanism are all controlled by a monitoring module; the method comprises the following steps: step 1, reciprocating garbage blanking; and step 2, pyrolysis and gasification of the garbage. Garbage can enter the furnace body conveniently, so that the garbage in the furnace body is evenly distributed, the pyrolysis and gasification efficiency is improved, ash residues generated after garbage pyrolysis and gasification are prevented from blocking the furnace cavity, and long-term efficient and stable gasification operation of the garbage pyrolysis furnace is facilitated.

The invention discloses a tunnel type biomass pyrolysis gasification incinerator, which includes a pyrolysis channel, a chained metal conveyor belt, a slag scraper and an incinerator body. The pyrolysis channel is arranged obliquely, the chained metal conveyor belt is arranged in the pyrolysis channel, a gap allowing air to pass through is formed in the belt surface of the chained metal conveyor belt, and the slag scraper is arranged at the bottom of the pyrolysis channel on the lower part of the chained metal conveyor belt, and scrapes materials falling to the bottom of the channel to the incineration area of the incinerator body. The incinerator body communicates with a discharge port of the pyrolysis channel, by arranging the pyrolysis channel, before incineration of the materials in the incinerator body, hot air in the incinerator body is introduced into the pyrolysis channel and the bottoms of the materials placed on the conveyor belt through the gap of the chain metal conveyor belt, all-round pyrolysis gasification operation is conducted on the materials, the pyrolysis gasification efficiency of the materials before combustion is improved, the slag scraper scrapes the materials falling at the bottom of the channel, and material accumulation in the channel is avoided.

The invention discloses a fluidized bed reactor for preparing bio-oil by using molten salt biomass, which comprises a first chamber and a second chamber, and the first chamber is communicated with the second chamber through a channel structure; the first cavity is provided with a reaction chamber, a biomass particle feeding device, a high-temperature molten salt chamber, a molten salt circulating device, a first discharge port and a second discharge port, the biomass particle feeding device and the high-temperature molten salt chamber are both communicated with the reaction chamber, the high-temperature molten salt chamber is arranged at the upper part of the reaction chamber, the first discharge port is located at the lower part of the reaction chamber, and the second discharge port is located at the lower part of the reaction chamber; the second discharge port is positioned at the upper part of the reaction chamber. According to the fluidized bed reactor, molten salt is used as a fluidized carrier and a heat carrier for cyclic utilization, the fluidized bed is used as a pyrolysis reactor, biomass is pyrolyzed and gasified in a high-temperature environment, and then the biomass is condensed to prepare biomass oil and combustible gas for utilization.

The invention discloses an organic solid waste microwave pyrolysis process and device. The device comprises a sludge powder bin, a 1# screw conveyor, a sludge microwave multi-hearth furnace, a 2# screw conveyor, a Raymond pulverizer, a 3# screw conveyor and a gasified slag storage bin which are connected in sequence; and a plurality of layers of large circular furnace plates and small circular furnace plates which are alternately arranged are arranged on a middle shaft in the sludge microwave multi-hearth furnace, the large circular furnace plates and the small circular furnace plates rotate around the middle shaft, a scraper is arranged on each layer of circular furnace plate, a through hole is formed in the position, close to the middle shaft, of each layer of large circular furnace plate, and a plurality of microwave sources are arranged on the outer wall of the sludge microwave multi-hearth furnace. The sludge microwave multi-hearth furnace is used for treating sludge powder, so that organic matters, fixed carbon and harmful substances in the sludge powder are subjected to pyrolytic reaction, gasified and fully decomposed with inorganic oxide to obtain pyrolytic gasified slag,the content of the organic matters is greatly reduced, the quantity of the slag is also greatly reduced, and the resource utilization range is enlarged.

The invention discloses a treatment device for high-calorific-value carbon-containing solid waste. The treatment device is characterized by comprising a crusher, a pulping machine, a pyrolyzing furnace, a cooling and drying device and a gas storage tank which are connected in sequence. The pyrolyzing furnace is of a structure with the diameter of the middle larger than the diameters of the upper end and the lower end, a spraying device is arranged in the middle in the pyrolyzing furnace, and a plasma torch and a filtering device are further arranged in the pyrolyzing furnace. A slag pool is arranged below a slag outlet of the pyrolyzing furnace. The treatment method suitable for the device comprises the following steps of: (1) feeding the carbon-containing solid waste into the crusher forcrushing treatment; (2) feeding the crushed raw materials into the pulping machine; (3) adding an oxalic acid solution to react for 2 hours; (4) adding a potassium hydroxide solution to react for 2 hours; (5) adding industrial water, heating to 80 DEG C, adding formaldehyde and sodium sulfite, and reacting for 1 hour; (6) adding linoleic acid and alkyl phosphorus carboxylate, and reacting for 2 hours to obtain solid waste raw material slurry. and (7) feeding the solid waste raw material slurry into the pyrolyzing furnace for pyrolyzing to obtain fuel gas.