A biomass gasification production device and production method using garbage-derived materials as raw materials

Abstract

The present invention discloses a biomass gasification production equipment using garbage-derived materials as raw materials, comprising a first-stage integrated mixer, the output end of the first-stage integrated mixer is connected to a shredding mechanism through a first conveying mechanism, the output end of the shredding mechanism is connected to a feed end of a dryer through a second conveying mechanism, the feed end of the dryer is connected to a discharge end of a biomass raw material bin through a third conveying mechanism, and the dryer is externally connected to a hot air furnace; an exhaust gas discharge port of the dryer is provided with an exhaust gas treatment mechanism; the discharge end of the dryer is connected to a second-stage integrated mixer through a fourth conveying mechanism, a sorting and impurity removal mechanism is arranged above the fourth conveying mechanism, the discharge end of the second-stage integrated mixer is connected to a rod making machine, and the discharge end of the rod making machine is connected to a biomass gasifier through a fifth conveying mechanism; the present invention not only effectively solves the problem that urban domestic garbage is difficult to handle and reduces pollution to the environment, but also makes full use of domestic garbage and converts it into biomass gas.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass gasification equipment, and in particular to a biomass gasification production equipment and a production method using garbage-derived materials as raw materials. Background Art

[0002] At present, a huge amount of urban domestic waste is generated every year in the world, posing a serious challenge to environmental protection and pollution control. Urban domestic waste is generally divided into three categories: ① organic matter (kitchen waste, yard waste, etc.); ② non-recyclable waste (coal ash, slag, dust, etc.); ③ recyclable materials (paper, plastic, fiber, metal, glass, etc.).

[0003] At present, the main methods of garbage disposal are landfill, composting and incineration. Landfill or open-air accumulation requires a large amount of land and cannot achieve the reduction of garbage disposal. Garbage incineration can achieve the purpose of heat recovery, volume reduction, weight reduction, high-temperature sterilization and other purposes of urban garbage, and thus has developed rapidly. However, garbage incineration will cause secondary pollution to the atmosphere, and the part that cannot be completely burned still needs to be landfilled. With the development of environmental science and technology and the improvement of people's requirements for environmental quality, it is necessary to actively find a garbage incineration treatment method that can improve the level of garbage recycling energy and has high environmental benefits and resource recovery efficiency. Now a kind of refuse derived fuel (RDF) production technology has emerged at home and abroad. The so-called refuse derived fuel refers to the removal of metals, glass, stones, sand and other non-combustible materials from garbage, and the crushing and drying of combustible materials in garbage (such as plastics, fibers, rubber, wood, food waste, etc.), adding additives, and compressing into solid fuels of the desired shape (such as columns, granules, etc.). The main parts of urban domestic garbage that can be used are: ① organic matter; ③ recyclable materials. RDF is a fuel that is artificially synthesized through scientific proportions. It has a high calorific value. Compared with general garbage fuel, its calorific value is more than 1-2 times that of the latter. The power generation efficiency can reach more than 25% (general garbage combustion is 10%), and the combustion is stable, which can greatly reduce the secondary pollutants such as dioxins produced by combustion. RDF, a garbage-derived material, has many advantages: ① The fuel is safe and commercial, with good storage and use performance; ② During the RDF processing, the chlorine-containing substances are minimized, the amount of dioxins generated by pyrolysis is extremely small, and the combustion is sufficient, and the slag discharge is less than 15%; ③ The ash after pyrolysis can be treated as general solid waste in accordance with national regulations, and can be used as paving stones, landfill cover materials, and the production of unburned bricks, etc., with a high comprehensive utilization rate of ash; ④ The calorific value is basically stable, which can ensure the operation stability of the gasifier or boiler.

[0004] In response to the above domestic waste treatment problems, domestic waste can be processed into waste derivatives that meet the requirements, and then the waste derivatives can be converted into combustible biomass gas through thermochemical reactions in a gasifier. Summary of the invention

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] A biomass gasification production equipment using garbage-derived materials as raw materials, characterized in that it includes a first-stage integrated mixer, a shredding mechanism, a dryer, a biomass raw material silo, a hot air furnace, an exhaust gas treatment mechanism, a sorting and impurity removal mechanism, a rod making machine, and a biomass gasification furnace; the output end of the first-stage integrated mixer is connected to the shredding mechanism through a first conveying mechanism, the output end of the shredding mechanism is connected to the feed end of the dryer through a second conveying mechanism, the feed end of the dryer is connected to the discharge end of the biomass raw material silo through a third conveying mechanism, and the dryer is externally connected to a hot air furnace; the exhaust gas outlet of the dryer is provided with an exhaust gas treatment mechanism; the discharge end of the dryer is connected to the second-stage integrated mixer through a fourth conveying mechanism, a sorting and impurity removal mechanism is mounted above the fourth conveying mechanism, the discharge end of the second-stage integrated mixer is connected to the rod making machine, and the discharge end of the rod making machine is connected to the biomass gasification furnace through a fifth conveying mechanism.

[0007] Furthermore, the first conveying mechanism, the second conveying mechanism, the third conveying mechanism, and the fourth conveying mechanism are all belt conveyors.

[0008] Furthermore, the fifth conveying mechanism includes a belt conveyor connected to the output end of the rod making machine, and the output end of the belt conveyor is connected to a bucket elevator.

[0009] Furthermore, the feed inlet of the first-stage integrated mixer is connected to a deodorizing additive silo.

[0010] Furthermore, the shredding mechanism comprises a primary shredder and a secondary shredder which are sequentially connected and arranged, the primary shredder is connected to the output end of the first-stage integrated mixer, and the output end of the primary shredder is connected to the secondary shredder.

[0011] Furthermore, a calcium oxide additive silo is provided at the upper end of the second conveying mechanism.

[0012] Furthermore, the exhaust gas treatment mechanism includes a cyclone dust collector connected to the exhaust gas outlet of the dryer, the output end of the cyclone dust collector is connected to a pulse dust collector, the output end of the pulse dust collector is connected to a photo-oxidation catalyst, and the output end of the photo-oxidation catalyst is connected to an induced draft fan.

[0013] Furthermore, the sorting and impurity removal mechanism includes an iron remover and a non-magnetic metal separator which are sequentially arranged along the conveying direction of the fourth conveying mechanism.

[0014] Furthermore, the biomass gasification furnace includes a furnace body, which is provided with an air inlet and a charge feed port, a connecting tube is installed at the lower end of the furnace body, a grate is rotatably installed inside the connecting tube close to the furnace body end, the grate separates the furnace body space from the connecting tube space, the grate is provided with a carbon outlet hole, and the grate is connected to a transmission mechanism for driving the grate to rotate; a gas outlet is opened on the wall of the connecting tube, the gas outlet is connected to a negative pressure fan, the lower end of the connecting tube is connected to a carbon deposition chamber, and the lower end of the carbon deposition chamber is connected to a carbon discharge mechanism.

[0015] A biomass gasification production method using garbage-derived materials as raw materials comprises:

[0016] a. First, manually sort out non-combustible materials such as glass, stones, large pieces of metal, sand and soil from domestic waste;

[0017] b. The sorted domestic waste is transported to the first-stage integrated mixer, and the deodorizing additive in the deodorizing additive silo is transported to the first-stage integrated mixer via a belt conveyor, and the domestic waste and the deodorizing additive are mixed in the first-stage integrated mixer.

[0018] c. The preliminarily mixed domestic waste is transported to the primary shredder via a belt conveyor, where it is repeatedly squeezed and shredded for preliminary crushing into large garbage particles. The preliminarily crushed domestic waste is then transported to the secondary shredder via a belt conveyor, where it is repeatedly squeezed and shredded for further crushing into small garbage particles.

[0019] d. The small pieces of garbage particles are conveyed to the dryer through a belt conveyor, and at the same time, the calcium oxide additive in the calcium oxide additive silo is output to the belt conveyor to be mixed with the small pieces of garbage particles; while the small pieces of garbage particles enter the dryer, the discharge end of the biomass raw material silo conveys the biomass raw materials to the dryer through a belt conveyor to be mixed with the small pieces of garbage particles, and the combustion calorific value of the small pieces of garbage particles is increased by adding the biomass raw materials;

[0020] e. The small pieces of garbage particles, biomass raw materials and calcium oxide additives entering the dryer are repeatedly picked up by the backflow blades inside the dryer. The hot air furnace provides hot air for the dryer. The moisture in the small pieces of garbage particles, biomass raw materials and calcium oxide additives is gradually dried and discharged from the discharge port of the dryer to the belt conveyor. The dryer discharges the dust-containing tail gas generated by drying the small pieces of garbage particles and calcium oxide additives. The tail gas is treated by the tail gas treatment mechanism, and the tail gas that meets the treatment standards is discharged from the chimney of the induced draft fan;

[0021] f. The small pieces of garbage particles after drying in the dryer are conveyed by a belt conveyor to a sorting and impurity removal mechanism to remove the remaining scrap iron impurities and non-magnetic metals in the small pieces of garbage particles. The sorted small pieces of garbage particles are conveyed to the second-stage integrated mixer by a belt conveyor for full and uniform mixing. After mixing, they are conveyed to a rod making machine by a belt conveyor to process the qualified mixed materials into high calorific value domestic garbage derivative materials;

[0022] g. The high calorific value of domestic waste derivatives generated in the briquette machine are transported to the feed port of the bucket elevator by a belt conveyor, and then the bucket elevator transports the high calorific value of domestic waste derivatives to the feed port of the fixed bed biomass gasifier;

[0023] h. The finished products of high calorific value domestic waste derivatives enter the furnace body from the charge feed port, and the air is sucked into the furnace body from the air inlet. The finished products of high calorific value domestic waste derivatives go through four different temperature reaction stages in the furnace body, namely, drying layer, pyrolysis layer, oxidation layer and reduction layer. The finished products of high calorific value domestic waste derivatives will form biomass gas and biomass carbon after the reaction in the furnace body. After the reaction is completed, the biomass gas will be output from the gas outlet, and the biomass carbon will enter the carbon deposition chamber through the carbon outlet hole and be output by the carbon outlet mechanism.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention relates to a biomass gasification production equipment and a production method using garbage-derived materials as raw materials. Domestic garbage is used as raw material. The domestic garbage is broken up by a shredding mechanism, and then the broken domestic garbage is combined with the biomass raw material for drying, and metal impurities are removed. Then, a finished garbage-derived material with high calorific value and convenient for storage and transportation is generated. The finished garbage-derived material is transported to a biomass gasifier for treatment, and biomass gas and biomass carbon can be generated. In the whole process, the energy in the domestic garbage is fully utilized as a resource, and the tail gas meets the emission requirements, which effectively solves the problem that urban domestic garbage is difficult to handle, improves the utilization rate of garbage resources, and reduces pollution to the environment; and domestic garbage is fully utilized and converted into biomass gas. The generated biomass gas can replace fossil energy such as coal, oil, and natural gas, and protect national energy resources.

[0026] 2. The present invention adopts a shredding mechanism to shred domestic waste, and adopts a multi-stage shredding technology combining two double-shaft shredders. The first-stage shredder repeatedly squeezes and shreds the domestic waste into large waste particles, and the second-stage shredder repeatedly squeezes and shreds the domestic waste to further shred it into small waste particles. Through the process of repeated squeezing and crushing, the domestic waste is shredded into small particles that meet the requirements.

[0027] 3. The present invention adopts a biomass gasification furnace to convert garbage-derived materials into biomass fuel gas. The biomass gasification furnace makes the contact area between the material and the grate larger. Under the action of the rotation of the grate, the gasification furnace can discharge carbon smoothly and quickly. In addition, a carbon discharge mechanism is installed at the bottom of the gasification furnace, which can make the biomass carbon fall into the carbon accumulation chamber and be automatically discharged by the carbon discharge mechanism. This can reduce manpower input, realize the separation of biomass fuel gas and biomass carbon, and improve work efficiency.

[0028] 4. The present invention adopts an exhaust gas treatment device, and uses a two-stage dust removal technology combining cyclone dust removal and pulse dust removal to treat the dust particles in the dryer exhaust gas to below the emission requirements; adopts photo-oxygen purifier catalytic technology to remove atmospheric pollutants such as hydrogen sulfide, ammonia, and mercaptans in the exhaust gas, and removes various odors. In this way, the exhaust gas generated by livestock and poultry manure in the process of biomass gasification is treated, reducing pollution to the environment and meeting emission requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the biomass gasifier structure;

[0031] Figure 3 It is a partial schematic diagram of the internal structure of the biomass gasifier;

[0032] Figure 4 This is an enlarged view of the internal structure of the biomass gasifier at point A. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings.

[0034] like Figure 1As shown, a biomass gasification production equipment using garbage-derived materials as raw materials comprises a first-stage integrated mixer 1, a shredding mechanism, a dryer 7, a biomass raw material bin 12, a hot air furnace 6, an exhaust gas treatment mechanism, a sorting and impurity removal mechanism, a rod making machine 14, and a biomass gasification furnace 8; the output end of the first-stage integrated mixer 1 is connected to the shredding mechanism through a first conveying mechanism, and the output end of the shredding mechanism is connected to the feed end of the dryer 7 through a second conveying mechanism. Preferably, in this embodiment, the dryer 7 is a rotary dryer 7, and the feed end of the dryer 7 is connected to the discharge end of the biomass raw material bin 12 through a third conveying mechanism. In this embodiment, the biomass raw material stored in the biomass raw material bin 12 is sawdust, and the sawdust is mixed with the garbage-derived materials to increase the combustion calorific value of the garbage particles by adding the biomass raw materials; the dryer 7 is externally connected to the hot air furnace 6; the dryer The exhaust outlet of 7 is provided with an exhaust treatment mechanism; the discharge end of the dryer 7 is connected to the second-stage integrated mixer 13 through the fourth conveying mechanism, and a sorting and impurity removal mechanism is set up above the fourth conveying mechanism. The discharge end of the second-stage integrated mixer 13 is connected to the rod making machine 14, and the discharge end of the rod making machine 14 is connected to the biomass gasification furnace 8 through the fifth conveying mechanism; preferably, in this embodiment, the first conveying mechanism, the second conveying mechanism, the third conveying mechanism, and the fourth conveying mechanism are all belt conveyors 2; the fifth conveying mechanism includes a belt conveyor 2 connected to the output end of the rod making machine 14, and the output end of the belt conveyor 2 is connected to a bucket elevator 21; the use of the bucket elevator 21 can reduce the difficulty of transportation and save space, and the finished garbage-derived materials made by the rod making machine 14 are transported to the fixed bed downdraft biomass gasification furnace 8 by vertical transportation.

[0035] like Figure 1 As shown, in order to reduce the odor generated during garbage disposal and the impact on the working environment, the feed port of the first-stage integrated mixer 1 is connected to a deodorizing additive silo 3, and the domestic garbage and the deodorizing additive are stirred and mixed in the first-stage integrated mixer 1 to reduce the odor of the domestic garbage.

[0036] like Figure 1 As shown, in order to crush the domestic garbage to meet the use specifications of the rod making machine 14, the domestic garbage needs to be crushed by a shredding mechanism, which includes a first-stage shredder 41 connected to the output end of the first-stage integrated mixer 1, and the output end of the first-stage shredder 41 is connected to a second-stage shredder 42. The first-stage shredder 41 and the second-stage shredder 42 are both double-shaft shredders. The first-stage shredder 41 repeatedly squeezes and shreds the domestic garbage into large garbage particles, and then conveys the preliminarily crushed domestic garbage to the second-stage shredder 42 through a belt conveyor 2 for repeated squeezing and shredding to further crush it into small garbage particles. A multi-stage crushing technology combining two double-shaft shredders is used, and the domestic garbage is crushed into small particles that meet the requirements through a process of repeated squeezing and crushing.

[0037] like Figure 1 As shown, when domestic waste is treated, a calcium oxide additive silo 5 is mounted on the upper end of the second conveying mechanism, and the calcium oxide additive silo 5 is filled with calcium oxide additives. An automatic feeder is installed at the lower part of the calcium oxide additive silo 5. During operation, the automatic feeder of the calcium oxide additive silo 5 is opened to output the calcium oxide additive to the belt conveyor 2 to cooperate with small pieces of garbage particles. In the dryer 7 of the next stage, the calcium oxide additive will be mixed with the small pieces of garbage particles. The calcium oxide additive can eliminate harmful gases such as hydrogen chloride and sulfur dioxide generated by thermal decomposition of plastics, reduce secondary pollutants such as dioxins, and is beneficial to environmental protection.

[0038] like Figure 1 As shown, in order to treat the tail gas generated during the biomass gasification process of the garbage derivatives and reduce the pollution to the environment, it is necessary to treat the tail gas generated during the processing of the garbage derivatives. The tail gas treatment mechanism includes a cyclone dust collector 94 connected to the tail gas outlet of the dryer 7, the output end of the cyclone dust collector 94 is connected to a pulse dust collector 93, the output end of the pulse dust collector 93 is connected to a photo-oxidation catalyst 92, the photo-oxidation catalyst 92 can remove atmospheric pollutants such as hydrogen sulfide, ammonia, and thiols in the tail gas, and remove various odors, the output end of the photo-oxidation catalyst 92 is connected to an induced draft fan 91, the induced draft fan 91 is used to suck the tail gas discharged from the tail gas outlet of the dryer 7 to the cyclone dust collector 94, the pulse dust collector 93 and the photo-oxidation catalyst 92 in sequence, and the tail gas is discharged by the induced draft fan 91 after treatment, and the tail gas generated during the processing of the garbage derivatives is reduced through the tail gas treatment device. Pollution to the air by the tail gas generated during the processing of the garbage derivatives is reduced.

[0039] like Figure 1 As shown, in order to remove the non-combustible impurities in the mixture of small garbage particles after drying by the dryer 7 and avoid affecting the quality of the finished products of high calorific value domestic waste derivatives produced in the subsequent procedures, the non-combustible impurities in the mixture of small garbage particles need to be removed by a sorting and impurity removal mechanism, and the sorting and impurity removal mechanism includes an iron remover 10 and a non-magnetic metal separator 11 arranged in sequence along the conveying direction of the fourth conveying mechanism; the iron remover 10 removes the scrap iron impurities remaining in the small particles of domestic waste after drying, and the non-magnetic metal separator 11 removes the non-magnetic metal particles in the small particles of domestic waste after the scrap iron impurities are removed. In this way, the technology of combining the iron remover 10 and the non-magnetic metal separator 11 is used to remove the metal substances in the garbage particles.

[0040] In this embodiment, if Figure 2-4As shown, a biomass gasification furnace 8 of a biomass gasification production equipment using garbage-derived materials as raw materials includes a furnace body 814, an upper end cover is provided at the upper end of the furnace body 814, and an air inlet 81 and a furnace material feed port 82 are provided on the upper end cover. A connecting tube 811 is installed at the lower end of the furnace body 814. Preferably, in this embodiment, the lower end of the furnace body 814 is coaxially installed with the connecting tube 811; a grate 83 is rotatably installed inside the connecting tube 811 near the end of the furnace body 814, and the grate 83 separates the furnace body 814 space from the connecting tube 811 space. The grate 83 is provided with a carbon outlet hole, and the grate 83 is connected to a transmission mechanism 84 that drives the grate 83 to rotate. Air is sucked into the furnace body 814 from the air inlet 81 and passes through the reaction layer from top to bottom. The reaction layer is divided into: a drying layer, a pyrolysis layer, an oxidation layer, and a reduction layer from top to bottom. The generated biomass fuel gas, the reduction layer is mainly biomass carbon and contacts with the grate 43. The reaction temperature of the drying layer is set to 30 Below 0°C, the reaction temperature of the pyrolysis layer is set to 300-800°C, the reaction temperature of the oxidation layer is set to 800-1000°C, the finished garbage derivatives react in different reaction layers in the furnace body 814 and finally form biomass carbon in the reduction layer, thereby realizing the transformation of the finished garbage derivatives into biomass gas and biomass garbage derivatives finished carbon; a gas outlet 85 is opened on the wall of the connecting tube 811, and the gas outlet 85 is connected to a negative pressure fan 81, thereby forming a negative pressure environment in the furnace body 814, realizing the discharge of biomass gas and the intake of air, and the lower end of the connecting tube 811 is connected to a carbon deposition chamber 812. Preferably, in this embodiment, a conical space is arranged inside the carbon deposition chamber 812, and the large conical diameter end of the conical space faces the side of the connecting tube 811. The conical space can prevent the biomass carbon from accumulating in the carbon deposition chamber 812, so that the biomass carbon can be smoothly output; the lower end of the carbon deposition chamber 812 is connected to a carbon discharge mechanism 86 for biomass carbon.

[0041] like Figure 2-4 As shown, in order to achieve a larger contact area between the finished garbage derivatives and the grate 83, and under the action of the rotation of the grate 83, the gasification furnace can produce carbon smoothly and quickly, the grate 83 protrudes toward one end of the furnace body 814 and is provided with a conical surface, and the carbon outlet holes are arranged on the conical surface; the conical surface can increase the contact area between the finished garbage derivatives and the grate 83, and the rapid rotation of the grate 83 can enable the finished garbage derivatives to enter the carbon deposition chamber 812 from the carbon outlet holes.

[0042] like Figure 2-4As shown, in order to realize the rotation of the grate 83, the transmission mechanism 84 includes a large gear ring 87 installed on the outer periphery of the grate 83 and a small gear 89 cooperating with the large gear ring 87. Preferably, the grate 83 is fixedly connected to the large gear ring 87, and the small gear 89 is connected to the sprocket 810 through a key shaft. In this embodiment, the sprocket 810 is driven by a motor to move. The motor realizes the rotation of the grate 83 through the transmission mechanism 44, so that the finished garbage derivatives can be evenly distributed under the rotation of the grate 83. The finished garbage derivatives are not easy to bridge and accumulate, the gasification reaction is uniform, the gasification efficiency is high, and the generation of wood tar and nitrogen is effectively reduced.

[0043] like Figure 2-4 As shown, in order to achieve the positioning of the grate 83 and ensure that the grate 83 does not move axially along the furnace body 814 during rotation, the upper end of the large gear ring 87 is provided with an upper limit portion 813 installed inside the furnace body 814, and the lower end of the large gear ring 87 is provided with a lower limit portion 88 installed inside the connecting tube 811, and a ball bearing is installed between the lower limit portion 88 and the large gear ring 87, and the ball bearing facilitates the rotation of the large gear ring 87, thereby realizing the rotation of the grate 83.

[0044] like Figure 2-4 As shown, in order to realize the output of the biomass carbon in the carbon deposition chamber 812 to the gasification furnace, realize the convenient and fast production of biomass carbon with considerable added value, realize the co-production of carbon and gas, and improve the utilization efficiency of biomass energy, the carbon output mechanism 86 includes a carbon output channel 861 connected to the carbon deposition chamber 812, and a spiral output shaft 862 is installed in the carbon output channel 861 along its axial direction, and an output blade 863 is spirally installed on the spiral output shaft 862. The output blade 863, the spiral output shaft 862 and the carbon output channel 861 form a spiral conveying channel for the biomass carbon, and a power mechanism is installed at one end of the spiral output shaft 862. Preferably, the power mechanism in this embodiment is a motor.

[0045] In this embodiment, the first-stage integrated mixer 1, the second-stage integrated mixer 13, the first-stage shredder 41, the second-stage shredder 42, the iron remover 10, the non-magnetic metal separator 11, the belt conveyor 2, the rotary dryer 7, the cyclone dust collector 94, the pulse dust collector 93, the photo-oxidation catalyst 92, the induced draft fan 91, the rod making machine 14, etc. are all prior arts and will not be described in detail here.

[0046] The working process of the present invention is:

[0047] a. First, manually sort out non-combustible materials such as glass, stones, large pieces of metal, sand and soil from domestic waste;

[0048] b. The sorted domestic waste is transported to the first-stage integrated mixer, and the deodorizing additive in the deodorizing additive silo 3 is transported to the first-stage integrated mixer via the belt conveyor 2, and the domestic waste and the deodorizing additive are mixed in the first-stage integrated mixer.

[0049] c. The preliminarily mixed domestic waste is conveyed to the primary shredder 41 through the belt conveyor 2, where it is repeatedly squeezed and shredded to be preliminarily broken into large garbage particles. Then the preliminarily broken domestic waste is conveyed to the secondary shredder 42 through the belt conveyor 2, where it is repeatedly squeezed and shredded to be further broken into small garbage particles.

[0050] d. The small garbage particles are conveyed to the dryer 7 through the belt conveyor 2, and the calcium oxide additive in the calcium oxide additive silo 5 is output to the belt conveyor 2 to be matched with the small garbage particles; while the small garbage particles enter the dryer 7, the discharge end of the biomass raw material bin 12 conveys the biomass raw material to the dryer 7 through the belt conveyor 2 to be mixed with the small garbage particles, and the combustion calorific value of the small garbage particles is increased by adding the biomass raw material;

[0051] e. The small pieces of garbage particles, biomass raw materials and calcium oxide additives entering the dryer 7 are repeatedly picked up by the backflow blades inside the dryer 7. The hot air furnace 6 provides hot air for the dryer 7. The moisture of the small pieces of garbage particles, biomass raw materials and calcium oxide additives is gradually dried and discharged from the discharge port of the dryer 7 to the belt conveyor 2. The dryer 7 discharges the dust-containing tail gas generated by drying the small pieces of garbage particles and the calcium oxide additive. The tail gas enters the cyclone dust collector 94 under the action of the induced draft fan 91 to remove large particle impurities in the tail gas and reduce the temperature of the tail gas. The tail gas then enters the pulse dust collector 93 to further remove the particle impurities in the tail gas. Then the tail gas enters the photo-oxidation catalyst 92 to remove atmospheric pollutants such as hydrogen sulfide, ammonia, and mercaptans in the tail gas, and remove various foul odors. The tail gas that meets the treatment standards is discharged from the chimney of the induced draft fan 91;

[0052] f. The small pieces of garbage particles after drying in the dryer 7 are sequentially conveyed by the belt conveyor 2 through the iron remover 10 and the non-magnetic metal separator 11 to remove the remaining scrap iron impurities and non-magnetic metals in the small pieces of garbage particles. The small pieces of garbage particles after sorting are conveyed to the second-stage integrated mixer by the belt conveyor 2 for full and uniform stirring. After the stirring is completed, the mixture is conveyed to the rod making machine 14 by the belt conveyor 2 to process the qualified mixed material into a high calorific value domestic garbage derivative material finished product;

[0053] g. The high calorific value of domestic waste derived material produced in the rod making machine 14 is transported to the feed port of the bucket elevator 21 via the belt conveyor 2, and then the bucket elevator 21 transports the high calorific value of domestic waste derived material to the feed port of the fixed bed biomass gasifier 8;

[0054] h. The finished products of high calorific value domestic waste derivatives enter the furnace body from the charge feed port, and the air is sucked into the furnace body from the air inlet. The finished products of high calorific value domestic waste derivatives go through four different temperature reaction stages in the furnace body, namely, drying layer, pyrolysis layer, oxidation layer and reduction layer. The finished products of high calorific value domestic waste derivatives will form biomass gas and biomass carbon after the reaction in the furnace body. After the reaction is completed, the biomass gas will be output from the gas outlet, and the biomass carbon will enter the carbon deposition chamber through the carbon outlet hole and be output by the carbon outlet mechanism.

[0055] The present invention is a biomass gasification production equipment and production method using garbage-derived materials as raw materials. The domestic garbage is used as raw materials. The domestic garbage is crushed by a shredding mechanism, and then the crushed domestic garbage is combined with the biomass raw materials for drying, and metal impurities are removed. Then, the finished garbage-derived materials are generated, and the finished garbage-derived materials are transported to the biomass gasification furnace 8 for processing, which can generate biomass gas and biomass carbon. In the whole process, the energy in the domestic garbage is fully utilized as a resource, and the tail gas meets the emission requirements, which effectively solves the problem that urban domestic garbage is difficult to handle, and improves the utilization rate of garbage resources and reduces pollution to the environment. The domestic garbage is fully utilized and converted into biomass gas. The generated biomass gas can replace fossil energy such as coal, oil, and natural gas to protect national energy resources.

[0056] This embodiment does not impose any formal limitation on the shape, material, structure, etc. of the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0057] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0058] If the words "first", "second", etc. are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only to facilitate the description of the present invention and simplify the description. Unless otherwise stated, the above words have no special meaning.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A biomass gasification production equipment using garbage-derived materials as raw materials, characterized in that: It includes a first-stage integrated mixer, a shredding mechanism, a dryer, a biomass raw material silo, a hot air furnace, an exhaust gas treatment mechanism, a second-stage integrated mixer, a sorting and impurity removal mechanism, a rod making machine, and a biomass gasification furnace; the output end of the first-stage integrated mixer is connected to the shredding mechanism through the first conveying mechanism, the output end of the shredding mechanism is connected to the feed end of the dryer through the second conveying mechanism, the feed end of the dryer is connected to the discharge end of the biomass raw material silo through the third conveying mechanism, and the dryer is externally connected to the hot air furnace; the exhaust gas outlet of the dryer is provided with an exhaust gas treatment mechanism; the discharge end of the dryer is connected to the second-stage integrated mixer through the fourth conveying mechanism, a sorting and impurity removal mechanism is mounted above the fourth conveying mechanism, the discharge end of the second-stage integrated mixer is connected to the rod making machine, and the discharge end of the rod making machine is connected to the biomass gasification furnace through the fifth conveying mechanism; The feed inlet of the first-stage integrated mixer is connected to a deodorizing additive silo; The shredding mechanism comprises a primary shredder and a secondary shredder which are sequentially connected, the primary shredder is connected to the output end of the first-stage integrated mixer, the output end of the primary shredder is connected to the secondary shredder, and both the primary shredder and the secondary shredder are double-shaft shredders; A calcium oxide additive silo is mounted on the upper end of the second conveying mechanism; The tail gas treatment mechanism includes a cyclone dust collector connected to the tail gas outlet of the dryer, the output end of the cyclone dust collector is connected to a pulse dust collector, the output end of the pulse dust collector is connected to a photo-oxidation catalyst, the output end of the photo-oxidation catalyst is connected to an induced draft fan, and the dryer is a rotary dryer; The separation and impurity removal mechanism includes an iron remover and a non-magnetic metal separator arranged in sequence along the conveying direction of the fourth conveying mechanism; The biomass gasification furnace comprises a furnace body, an upper end cover is provided at the upper end of the furnace body, and an air inlet and a charge feed port are provided on the upper end cover, a connecting tube is installed at the lower end of the furnace body, a grate is rotatably installed inside the connecting tube close to the furnace body end, the grate separates the furnace body space from the connecting tube space, a carbon outlet hole is provided on the grate, and the grate is connected to a transmission mechanism for driving the grate to rotate; a gas outlet is opened on the tube wall of the connecting tube, the gas outlet is connected to a negative pressure fan, the lower end of the connecting tube is connected to a carbon deposition chamber, and the lower end of the carbon deposition chamber is connected to a carbon outlet mechanism.

2. The biomass gasification production equipment using garbage-derived materials as raw materials according to claim 1 is characterized in that: The first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism are all belt conveyors.

3. The biomass gasification production equipment using garbage-derived materials as raw materials according to claim 2 is characterized in that: The fifth conveying mechanism comprises a belt conveyor connected to the output end of the rod making machine, and the output end of the belt conveyor is connected to a bucket elevator.

4. The method for producing a biomass gasification production equipment using garbage-derived materials as raw materials according to claim 3, characterized in that: a. First, manually sort out the glass, stones, large pieces of metal, sand and non-combustible materials included in the domestic waste; b. The sorted domestic waste is transported to the first-stage integrated mixer, and the deodorizing additive in the deodorizing additive silo is transported to the first-stage integrated mixer via a belt conveyor, and the domestic waste and the deodorizing additive are mixed in the first-stage integrated mixer; c. The preliminarily mixed domestic waste is conveyed to the primary shredder through a belt conveyor, where it is repeatedly squeezed and shredded to be preliminarily broken into large garbage particles. The preliminarily broken domestic waste is then conveyed to the secondary shredder through a belt conveyor, where it is repeatedly squeezed and shredded to be further broken into small garbage particles; d. The small pieces of garbage particles are conveyed to the dryer through a belt conveyor, and at the same time, the calcium oxide additive in the calcium oxide additive silo is output to the belt conveyor to be mixed with the small pieces of garbage particles; while the small pieces of garbage particles enter the dryer, the discharge end of the biomass raw material silo conveys the biomass raw materials to the dryer through a belt conveyor to be mixed with the small pieces of garbage particles, and the combustion calorific value of the small pieces of garbage particles is increased by adding the biomass raw materials; e. The small pieces of garbage particles, biomass raw materials and calcium oxide additives entering the dryer are repeatedly picked up by the backflow blades inside the dryer. The hot air furnace provides hot air for the dryer. The moisture in the small pieces of garbage particles, biomass raw materials and calcium oxide additives is gradually dried and discharged from the discharge port of the dryer to the belt conveyor. The dryer discharges the dust-containing tail gas generated by drying the small pieces of garbage particles and calcium oxide additives. The tail gas is treated by the tail gas treatment mechanism, and the tail gas that meets the treatment standards is discharged from the chimney of the induced draft fan; f. The small pieces of garbage particles after drying in the dryer are conveyed by a belt conveyor to a sorting and impurity removal mechanism to remove the remaining scrap iron impurities and non-magnetic metals in the small pieces of garbage particles. The sorted small pieces of garbage particles are conveyed to the second-stage integrated mixer by a belt conveyor for full and uniform mixing. After mixing, they are conveyed to a rod making machine by a belt conveyor to process the qualified mixed materials into high calorific value domestic garbage derivative materials; g. The high calorific value of domestic waste derivatives generated in the briquette machine are transported to the feed port of the bucket elevator by a belt conveyor, and then the bucket elevator transports the high calorific value of domestic waste derivatives to the feed port of the fixed bed biomass gasifier; h. The finished products of high calorific value domestic waste derivatives enter the furnace body from the charge feed port, and the air is sucked into the furnace body from the air inlet. The finished products of high calorific value domestic waste derivatives go through four different temperature reaction stages in the furnace body, namely, drying layer, pyrolysis layer, oxidation layer and reduction layer. The finished products of high calorific value domestic waste derivatives will form biomass gas and biomass carbon after the reaction in the furnace body. After the reaction is completed, the biomass gas will be output from the gas outlet, and the biomass carbon will enter the carbon deposition chamber through the carbon outlet hole and be output by the carbon outlet mechanism.

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