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

The invention provides a waste pyrolysis gasification system. The system comprises a pyrolysis gasifier, a pyrolysis gas combustion chamber, a dust removal unit, a deacidification unit, a chimney anda waste heat recycling unit; the outlet of the lower end of the pyrolysis gasifier 1 communicates with the gas inlet of the pyrolysis gas combustion chamber, and the pyrolysis gasifier communicates with the pyrolysis gas combustion chamber through the waste heat recycling unit; and the outlet of the pyrolysis gas combustion chamber is connected with the inlet of the dust removal unit, an outlet ofthe dust removal unit is connected with the inlet of the deacidification unit, and the outlet of the deacidification unit is connected with the chimney. The system is suitable for the technical fieldof waste pyrolysis gasification, the waste can be treated without the pretreatment processes such as classification and drying, the waste can be prevented from being stacked up in the pyrolysis gasifier so that the system can operate continuously and stably, the operation efficiency can be improved, the service life of the grate can be prolonged, the operation cost can be reduced, the modularization and miniaturization design of equipment can be realized, the equipment flexibility can be improved, and the requirement of waste treatment of different scales can be met.

The invention discloses a garbage pyrolysis gasification furnace. A base of a furnace body is arranged in an ash pan. An air and steam inlet channel is formed in the center of the ash pan. An air and steam inlet of the air and steam inlet channel communicates with the interior of the garbage pyrolysis gasification furnace. An air and steam outlet is formed in the top end of the air and steam inlet channel, and the lower end of the air and steam inlet channel is connected with an air blower. A pyrolysis gasification chamber in the garbage pyrolysis gasification furnace is provided with an ash layer, a combustion gasification chamber, a destructive distillation layer and a drying layer from bottom to top. The combustion gasification chamber is provided with an ignition opening. A pyrolysis gasification gas outlet is formed in the drying layer and is connected with a secondary combustion chamber. A feeding opening is formed in the top of the garbage pyrolysis gasification furnace. A scraper is welded to the ash pan, the ash pan is driven by a motor to rotate, ash entering the ash pan is brought out by the scraper, and two rows of small gas holes are formed in the two sides of the scraper. According to the garbage pyrolysis gasification furnace, the optimal efficiency of garbage pyrolysis gasification can be achieved, and the garbage pyrolysis gasification furnace is more economical and environment-friendly.

A material distributing device for a waste pyrolysis gasifier, which is installed between the hydraulic feeder and the feed port of the pyrolysis gasifier, including: a transmission screw placed flat on a cylindrical transmission tooth, and the transmission screw passes through the transmission pulley and the material distribution net The sieves are connected; the distribution mesh screen is a round platform, placed above the feed inlet of the pyrolysis gasifier, the middle part of the distribution mesh screen is the feed inlet and the distribution outlet, and the edge part of the distribution mesh screen is provided with a number of mesh holes. The invention is suitable for distributing the garbage derived fuel RDF, can realize the integrated operation process of feeding and distributing, and improves the quality of pyrolysis and gasification of garbage.

The invention discloses a method for continuous pyrolysis and gasification of a material. The method comprises the following steps: 1, a raw material and a catalyst enter a microwave pyrolysis and gasification system, fall to a first-stage rotating disc of a microwave reaction chamber, and sequentially undergo drying, activating and pyrolysis treatment with rotating; 2, a pyrolysis treated material falls to a second-stage rotating disc of the microwave reaction chamber, and the pyrolysis treated material and a pyrolysis volatile compound undergo a gasification and reforming reaction under the action of water vapor; and 3, a solid product obtained in step 2 falls to a residue storage tank below the microwave reaction chamber from middle holes of the second-stage rotating disc through a second-stage pushing baffle plate, and is discharged from a reaction system under stirring and screw dual action, and a gas product enters a settlement chamber from an annular sieve plate at the bottom of the microwave reaction chamber, and undergoes settlement treatment to obtain the gasification product. The method has the advantages of fast cracking speed, high gasification efficiency, high quality of the gas product, meeting of liquid fuel synthesis requirements, and good application prospect.

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 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 discloses a multi-segment clean and efficient household garbage pyrolysis and gasification furnace and process. The furnace comprises a furnace body. The two opposite sides of the upper end of the furnace body are each provided with a totally-closed bidirectional feeding pipe. An internal compaction air plate is mounted at the upper end in the furnace body in a suspended manner. An internal gas guide pipe is vertically mounted around the inner wall of the furnace body. The upper end of the internal gas guide pipe communicates with a gas outlet pipe. A through gas guide fire-leading pipe is further connected between the gas outlet pipe and an inner cavity of the furnace body and penetrates the internal compaction air plate to stretch into the lower portion of the inner cavity of the furnace body. The furnace body is further provided with a regenerated gas combustion-supporting system. According to the multi-segment clean and efficient household garbage pyrolysis and gasification furnace and process, upper-segment gas with many impurities returns to a fire inlet layer to be combusted through the regenerated gas combustion-supporting system, impurity pollutants are subjected to high-temperature treatment, and gas becomes cleaner; and the combustion-supporting system can increase the combustion speed and raise the combustion temperature, the garbage pyrolysis and gasification efficiency is higher, and efficient utilization of garbage heating and heat energy can be achieved.