Biomass forming system and solid waste gasification melting treatment system

Abstract

The utility model discloses a biomass forming system and a solid waste gasification melting treatment system. The forming system comprises a stock bin, a briquetting device, a circular mold mechanism and a frame body, the circular mold mechanism comprises a plurality of forming modules and triangular fixing blocks distributed between the adjacent forming modules at intervals. A driving motor is arranged in the frame body; the forming module is a variable cross-section through hole and is formed by splicing symmetrically arranged half-wedge-shaped grooves; the large-section end of the forming module is a feeding hole, and the small-section end of the forming module is a discharging hole. The sectional area of the discharging hole is smaller than that of the feeding hole. The treatment system comprises the biomass forming system, a drying system, a sealed feeding system, a gasification melting system and a combustion system. According to the utility model, the high-strength biomass briquette is obtained and is used for a solid waste gasification and melting treatment system to meet the requirements of a gasification and melting furnace.

Description

Technical Field

[0001] This utility model relates to a molding system and a solid waste treatment system, and more particularly to a biomass molding system and a solid waste gasification and melting disposal system. Background Technology

[0002] Currently, the main methods for treating organic solid waste include landfill, incineration, physical methods, and chemical methods. However, most of these methods suffer from incomplete harmless treatment, high costs, and secondary pollution. Gasification melting technology involves the partial combustion of organic solid waste under controlled oxygen (air) supply to achieve gasification, generating combustible gases, while simultaneously melting fly ash and bottom ash. This technology can more efficiently recover resources and energy from organic solid waste, while meeting stricter emission standards for organic solid waste. It maximizes the harmlessness and resource utilization of hazardous solid waste, avoids secondary pollution, and represents a highly promising method for organic solid waste disposal.

[0003] Patent CN105605581A discloses a vertical waste gasification and melting furnace. Waste enters the furnace body through a top-feeding device and moves downwards within the vertical furnace. Through heat exchange with rising high-temperature gas, the waste gradually dries and pyrolyzes, generating combustible gas and ash. The ash further moves downwards into the combustion zone below, achieving gasification and melting. This process is simple, has good system sealing, and high heat utilization. However, in actual projects, the moisture content and organic matter content of the organic solid waste entering the furnace are unstable. The heat required for drying and pyrolysis, as well as the heat generated by the remaining fixed carbon, cannot be controlled, leading to unstable temperatures in the melting section and problems such as system instability.

[0004] In a vertical furnace, materials are added from the top and slowly move downwards within the furnace body, gradually achieving drying, pyrolysis, gasification, and melting. A large amount of gas is released during the pyrolysis and gasification process, therefore, uniform voids between materials are required to allow for gas escape while ensuring uniform heating. In existing processes, organic solid waste raw materials are typically shaped into blocks first, or block coke is added to the furnace as auxiliary fuel. If all organic solid waste is shaped, the scale of the blocks is large, and most organic solid waste (municipal waste, medical waste) has poor strength after shaping, making it prone to breakage during drying and pyrolysis, leading to system instability and even operational accidents. Using block coke results in high carbon emissions and high energy consumption, thus requiring further system optimization. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to provide a biomass molding system that can improve the compressive strength, impact resistance and strength of biomass blocks after pyrolysis; the second purpose of this utility model is to provide a solid waste gasification and melting treatment system.

[0006] Technical Solution: The biomass molding system of this utility model includes a hopper, a briquetting device, a ring die mechanism, and a frame; the briquetting device includes a material distribution device and a pressure roller device; the ring die mechanism includes multiple molding modules of the same shape and triangular fixing blocks spaced apart between adjacent molding modules; a drive motor is provided in the frame; the output shaft of the drive motor is connected to the briquetting device through a drive spindle; the molding module is a variable cross-section through hole, formed by splicing symmetrically arranged semi-wedge-shaped grooves; the larger cross-section end of the molding module is located on the inner side of the ring die mechanism, becoming the feed hole of the ring die mechanism; the smaller cross-section end of the molding module is located on the outer side of the ring die mechanism, becoming the discharge hole of the ring die mechanism; the cross-sectional area of ​​the discharge hole is smaller than the cross-sectional area of ​​the feed hole.

[0007] The cross-sectional areas of the feed hole and the discharge hole of the molding module are set to 1.0:(0.75-0.95). The cross-sectional area of ​​the discharge hole is smaller than that of the feed hole, which helps to improve the density of the molded block and increase its mechanical strength.

[0008] The molding module is formed by the snap-fitting of symmetrically arranged semi-wedge-shaped grooves.

[0009] The ring die mechanism is provided with an upper pressure plate and a lower pressure plate at its upper and lower layers, respectively; the upper pressure plate and the lower pressure plate are axially fixed by fastening bolts to fix the ring die mechanism.

[0010] The triangular fixing block is set between adjacent molding modules, seamlessly splicing with the adjacent molding modules to radially fix the molding modules and ensure that the molding modules are stable and do not loosen; the triangular fixing block is equipped with a temperature control heating device, preferably a temperature control heating rod, to realize temperature control during the molding process.

[0011] The material distribution device and the pressure roller device are located inside the hopper. The material distribution device is positioned above the pressure roller device and is connected to the drive shaft of the drive motor. The material distribution device has multiple rotating stirring blades to effectively distribute the material evenly onto the inner wall of the ring die mechanism, preventing material bridging or ineffective rotation. The shape and size of the pressure roller teeth of the pressure roller device are matched with the structure and size of the forming module. When the pressure roller device rotates under the drive of the main shaft, the pressure roller teeth engage with the forming module, forcibly pushing the material into the forming module to ensure that the material smoothly enters the feed hole and improves the forming effect.

[0012] The solid waste gasification and melting treatment system of this utility model includes the aforementioned biomass molding system, as well as a drying system, a sealed feeding system, a gasification and melting system, and a combustion system. The discharge ports of the drying system and the biomass molding system are respectively connected to the inlet of the sealed feeding system, and the discharge port of the sealed feeding system is connected to the inlet of the gasification and melting system. The high-temperature flue gas inlet of the drying system is connected to the high-temperature flue gas outlet of the combustion system. The crude syngas outlet of the gasification and melting system is connected to the crude syngas inlet of the combustion system. The gasification and melting system is also provided with a crude syngas inlet and a first air inlet. The combustion system is also provided with a second air inlet and an independent burner.

[0013] The drying system includes a rotary dryer, which comprises a kiln head, a kiln body, and a kiln tail. The kiln head is equipped with a feed inlet and a flue gas inlet connected to a screw feeder. The kiln body comprises an annular system consisting of an outer cylinder and an inner cylinder. The kiln tail is equipped with an evaporation water outlet, a discharge outlet, and a material temperature tester. The flue gas inlet at the kiln head is connected to the flue gas outlet at the outer cylinder. The outer cylinder is equipped with a high-temperature flue gas inlet and a flue gas outlet after heat exchange.

[0014] The gasification and melting system includes a gasification and melting furnace, which comprises an upper pyrolysis and gasification section and a lower melting section. The upper part of the pyrolysis and gasification section is the pyrolysis section, and the lower part is the gasification section. The pyrolysis and gasification section is equipped with a gasification and melting system feed inlet, a gasification and melting system crude syngas inlet, a first air inlet, and a gasification and melting system crude syngas outlet connected to the feed pipe of the sealed feed system. The melting section is equipped with an oxygen-enriched air inlet, a slag outlet, and a heavy metal outlet. The gasification and melting system crude syngas inlet is connected to the gasification and melting system crude syngas outlet through an insulated pipe.

[0015] In this process, the liquid slag obtained from the treatment of solid waste or organic solid waste in the gasification and melting system achieves the separation of heavy metals from solid slag within the gasification and melting system.

[0016] Furthermore, the material exiting the drying system and the biomass blocks from the biomass molding system intermittently enter the gasification and melting system through a sealed feeding system. This ensures the airtightness of the gasification and melting system and enables the layered distribution of organic solid waste and biomass blocks, providing space for gas to escape. At the same time, it avoids the large amount of water vapor in the drying system from coming into contact with the biomass blocks, which could lead to the breakage of the biomass blocks. It also prevents water vapor from entering the gasification and melting system and affecting the calorific value of the crude syngas, which is beneficial for the high-value utilization of the crude syngas.

[0017] Beneficial effects: Compared with the prior art, this utility model achieves the following significant effects:

[0018] (1) The cross-sectional area of ​​the discharge hole of the ring die mechanism of this utility model is smaller than that of the feed hole. In particular, when the cross-sectional area of ​​the feed hole and the discharge hole is set to 1.0:0.75-0.95, it can improve the molding pressure without causing material blockage. By controlling the biomass particle size, molding temperature and material moisture content, high-strength biomass blocks are obtained and used to replace block coke in the organic solid waste gasification and melting treatment system to meet the requirements of the gasification and melting furnace.

[0019] (2) Using biomass blocks as auxiliary fuel and support material avoids the molding of all organic solid waste, while simplifying the sorting and pretreatment of organic solid waste before molding, simplifying the process flow, reducing the molding scale, and reducing the investment cost of the complete process and subsequent operating costs.

[0020] (3) Through the effective integration of the drying system, biomass molding system, sealed feeding system, gasification melting system and combustion system, the entire organic solid waste disposal system has been stably operated, and the organic matter, dioxins and other substances in the organic solid waste have been completely decomposed and the heavy metals and liquid slag have been completely separated. The high-value-added crude syngas generated is fully combusted in the combustion system and then the waste heat is utilized. The heavy metal-free solid slag can be reprocessed through multiple pathways for resource utilization, thus fundamentally realizing the "four-fold" disposal of organic solid waste. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the biomass molding system of this utility model;

[0022] Figure 2 This is a schematic diagram of the fabric-making device of this utility model;

[0023] Figure 3 This is a schematic diagram of the pressure roller device of this utility model;

[0024] Figure 4 This is a schematic diagram of the ring mold mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of the molding module of this utility model;

[0026] Figure 6 This is a schematic diagram of the disassembled molding module structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the solid waste gasification and melting treatment system of this utility model;

[0028] Figure 8 This is a schematic diagram of the sealed feeding system of this utility model. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Example 1

[0031] like Figure 1-4 As shown, a biomass molding system includes a hopper 21, a briquetting device 22, a ring die mechanism 23, and a frame 24. The briquetting device 22 includes a material distribution device 221 and a pressure roller device 222. The ring die mechanism 23 has an upper pressure plate 23A and a lower pressure plate 23B on its upper and lower layers, respectively. The upper and lower pressure plates are axially fixed by fastening bolts to fix the ring die mechanism 23. The ring die mechanism 23 consists of multiple molding modules 231 of the same shape and triangular fixing blocks 232 spaced apart between adjacent molding modules 231. A drive motor 241 is provided inside the frame. The output shaft of the drive motor 241 is connected to the briquetting device 22 through a drive spindle.

[0032] like Figure 5 , 6 As shown, the molding module 231 is a variable cross-section through hole, formed by the engagement of symmetrically arranged semi-wedge-shaped grooves 231a and 231b. The larger cross-section end 234 of the molding module 231 is located inside the ring mold mechanism 23, serving as the feed hole of the ring mold mechanism 23. The smaller cross-section end 235 of the molding module 231 is located outside the ring mold mechanism 23, serving as the discharge hole of the ring mold mechanism 23. The cross-sectional area of ​​the discharge hole is smaller than that of the feed hole, which helps to improve the density of the molded block and increase its mechanical strength. The larger cross-section end 234 and the smaller cross-section end 235 are marked as 234a and 235a on the semi-wedge-shaped groove 231a, respectively, and as 234b and 235b on the semi-wedge-shaped groove 231b, respectively.

[0033] The triangular fixing block 232 is set between adjacent molding modules 231 and seamlessly splices with the adjacent molding modules 231 to radially fix the molding modules 231 and ensure that the molding modules 231 are stable and do not loosen; a temperature control heating device 233 is set inside the triangular fixing block 232, which is a temperature control heating rod in this embodiment to realize temperature control during the molding process.

[0034] The material feeding device 221 and the pressure roller device 222 are located inside the hopper 21. The material feeding device 221 is positioned above the pressure roller device 222, and both are connected to the drive shaft of the drive motor 241. The material feeding device 221 has multiple rotating stirring blades, which effectively distribute the material evenly onto the inner wall of the ring mold mechanism 23, preventing material bridging or ineffective rotation. The shape and size of the pressure roller teeth 223 of the pressure roller device 222 are matched with the structure and size of the forming module 231. When the pressure roller device 222 rotates under the drive of the main shaft, the pressure roller teeth 223 engage with the forming module 231, forcibly pushing the material into the forming module 231, ensuring that the material smoothly enters the feed hole and improving the forming effect.

[0035] Work process:

[0036] Biomass / coal powder biomass blocks are prepared using the above-described biomass molding system:

[0037] Biomass blocks are used to replace block coke and block limestone in the vertical gasification and melting process of municipal solid waste. In this process, the temperature of the melting section of the gasifier is 1200-1400℃, and the impact strength of the biomass blocks during the feeding process is required to be >90%; the compressive strength of the blocks after pyrolysis at 500-1100℃ is required to be >312N / block.

[0038] The specific steps for preparing this biomass block are as follows:

[0039] The collected biomass with a moisture content of <15% is mixed with coal powder obtained from the separation of gasification slag, which has a particle size of 200 mesh and a moisture content of <10%, and quicklime powder, which has a moisture content of <2%. The mixture is then conveyed into the biomass molding system of Example 1 by a screw conveyor for molding. After molding, the blocks are conveyed by belt and placed in a temporary storage bin for ventilation and cooling, and then packaged for later use.

[0040] The physical properties of the molded block are shown in Table 1 below:

[0041] Table 1. Molding parameter requirements and molding effects of different equipment

[0042]

[0043] As shown in Table 1, by molding with different molding equipment, it was initially determined that the products formed by the ring die machine, the screw extruder and the stamping machine meet the requirements of this utility model. The thermal strength needs to be investigated in the future.

[0044] Table 2 Mechanical Strength of Stamped Products Before and After Pyrolysis

[0045]

[0046] As shown in Table 2, experiments with different biomass proportions revealed that high pre-pyrolysis strength can be obtained by using a stamping press. However, due to the forming principle, the formed blocks are layered into flakes, resulting in severe fragmentation of the biomass blocks after pyrolysis, which fails to meet the requirements of this utility model.

[0047] Table 3 Mechanical strength of products formed by screw extruder before and after pyrolysis

[0048]

[0049] As shown in Table 3, experiments with different biomass ratios revealed that high block strength can be obtained by using a screw extruder. However, based on the forming principle of the screw extruder, the current maximum capacity of a single machine is 200 kg / h, and the power consumption reaches 150 kWh / ton, which is too high and cannot meet the requirements of this utility model.

[0050] Using the biomass molding system of this invention, the mechanical strength test results of the molded products before and after pyrolysis are shown in Tables 4 and 5 when the motor power is 55kw and 110kw respectively.

[0051] Table 4. Mechanical strength of the biomass molding system products before and after pyrolysis (motor power 55kw).

[0052]

[0053] Table 5. Mechanical strength of the biomass molding system products before and after pyrolysis (motor power 110kw)

[0054]

[0055]

[0056] As shown in Tables 4 and 5, a power of 55 kW is sufficient for stable operation of pure biomass. However, the addition of coal powder or quicklime increases friction, and the pressure required for molding will increase due to the different properties of the materials. The specific motor power can be adjusted according to the actual raw material ratio, and can be 110-240 kW.

[0057] Example 2

[0058] like Figure 7 As shown, an organic solid waste gasification and melting treatment system includes a biomass molding system 2 as described in Example 1, as well as a drying system 1, a sealed feeding system 3, a gasification and melting system 4, and a combustion system 5. The discharge ports of the drying system 1 and the biomass molding system 2 are respectively connected to the inlet of the sealed feeding system 3, and the discharge port of the sealed feeding system 3 is connected to the inlet 411 of the gasification and melting system. The high-temperature flue gas inlet 124 of the drying system 1 is connected to the high-temperature flue gas outlet of the combustion system 5. The crude syngas outlet 414 of the gasification and melting system is connected to the crude syngas inlet 51 of the combustion system. The gasification and melting system 4 is also provided with a crude syngas inlet 412 and a first air inlet 413. The combustion system 5 is also provided with a second air inlet 53 and an independent burner 52.

[0059] The drying system 1 of this utility model includes a rotary dryer 1-1, which includes a kiln head 11, a kiln body 12, and a kiln tail 13. The kiln head 11 is provided with a feed inlet 111 connected to the screw feeder 113 and a flue gas inlet 112. The kiln body 12 includes a ring system 123 composed of an outer cylinder 121 and an inner cylinder 122. The kiln tail 13 is provided with an evaporation water outlet 131, a discharge outlet 132, and a material temperature tester 133. The flue gas inlet 112 of the kiln head is connected to the flue gas outlet 125 of the outer cylinder. The outer cylinder 121 is provided with a high-temperature flue gas inlet 124 and a flue gas outlet 125 after heat exchange. The rotary dryer adopts a combination of indirect and direct heating of high-temperature flue gas, which can avoid the local pyrolysis of organic solid waste caused by excessively high flue gas temperature, and can make full use of flue gas heat, thereby improving drying efficiency and reducing the difficulty of tail gas treatment. The rotary dryer drive device of this utility model has frequency conversion and reverse rotation functions. It can adjust the rotation speed of the rotary dryer 1-1 according to the material temperature at the outlet, or reverse the operation to ensure that the moisture content of the material outlet is less than 15%.

[0060] like Figure 8 As shown, the sealed feeding system 3 includes a feeding pipe 31, which is located vertically below the kiln tail 13 of the rotary dryer 1-1, and is connected to the kiln tail outlet 132 and the gasification melting system inlet 411 in sequence. The feeding pipe 31 is equipped with an upper locking valve 32 and a lower locking valve 34. A locking chamber 33 is formed between the upper locking valve 32 and the lower locking valve 34. The feeding pipe 31 is equipped with an arch-breaking device 35 for rotating the material inside the feeding pipe 31. The arch-breaking device 35 is connected between the upper locking valve 32 and the lower locking valve 34 through an upper flange 351 and a lower flange 352, respectively. The arch-breaking device 35 includes an arch-breaking ring 354 that fits into the feeding pipe 31 and a drive motor 353 connected to the arch-breaking ring 354. The arch-breaking ring 354 rotates around a horizontal axis. The feeding pipe 31 is equipped with a biomass block inlet 36. The feed pipe 31 is positioned vertically below the kiln tail 13 of the rotary dryer 1-1, and is connected sequentially to the kiln tail outlet 132 and the gasification melting system inlet 411. During system operation, the lower locking valve 34 is closed and the upper locking valve 32 is opened, allowing material to enter the locking pipe 33. Then, the upper locking valve 32 is closed, and the lower locking valve 34 is opened, allowing material to enter the gasification melting furnace under the rotating condition of the arch-breaking device 35, achieving sealed feeding. The biomass blocks and organic solid waste are fed alternately, achieving layered material distribution.

[0061] The material enters the gasification and melting furnace under the rotation of the arch-breaking device 35, achieving sealed feeding. After being dried by the drying system 1, the material is conveyed into the gasification and melting system 4 through the sealed feeding system 3. This not only prevents a large amount of water vapor in the drying system 1 from entering the gasification and melting system 4, reducing the heat consumption of the gasification and melting furnace due to water vapor heating, but also increases the calorific value of the crude syngas in the gasification and melting furnace, thereby improving the system's thermal utilization rate in two ways.

[0062] The gasification and melting system 4 includes a gasification and melting furnace, which includes an upper pyrolysis and gasification section 4-1 and a lower melting section 4-2. The upper part of the pyrolysis and gasification section 4-1 is the pyrolysis section, and the lower part is the gasification section. The pyrolysis and gasification section 4-1 is provided with a gasification and melting system inlet 411, a gasification and melting system crude syngas inlet 412, a first air inlet 413, and a gasification and melting system crude syngas outlet 414, which are connected to the feed pipe 31 of the sealed feed system 3. The melting section 4-2 is provided with an oxygen-enriched air inlet 421, a slag outlet 422, and a heavy metal outlet 423. The gasification and melting system crude syngas inlet 412 is connected to the gasification and melting system crude syngas outlet 414 through an insulated pipe. The melting section 4-2 is inverted trapezoidal in shape, which reduces the melting space, increases the thickness of the refractory material, improves the heat accumulation capacity of the melting section 4-2, and further improves the system's thermal utilization rate. The molten slag obtained from the treatment of organic solid waste in the gasification melting furnace achieves the separation of heavy metals from the slag at the bottom of the furnace.

[0063] Combustion system 5 includes a combustion furnace connected to an independent burner 52. The combustion furnace is a low-NOx combustion furnace. The combustion furnace has a crude syngas inlet 51, a second air inlet 53, and a high-temperature flue gas outlet 54. The crude syngas inlet 51 is connected to the crude syngas outlet 414 of the gasification and melting system. The high-temperature flue gas outlet 54 is connected to the high-temperature flue gas inlet 124. The crude syngas inlet 51 is vertically positioned to the independent burner 52 to ensure complete combustion of the crude syngas. The crude syngas inlet 51 is located at the front end of the combustion furnace. The crude syngas generated in the gasification and melting furnace is drawn out by a blower and partially enters the low-NOx combustion furnace, where it is completely combusted under the ignition of the natural gas independent burner 52 and enters the rotary dryer ring system as a heat source. Part of the crude syngas is introduced into the gasification and melting furnace by the blower for oxygen-enriched combustion, providing heat for the gasification and melting furnace. The remaining part is utilized at a high value according to demand.

[0064] Work process:

[0065] Using the system described above, the biomass blocks obtained in Example 1 were used in a municipal solid waste gasification and melting furnace:

[0066] The crushed municipal solid waste, with a particle size <10cm and a moisture content of approximately 62%, enters the rotary dryer 1-1 under the propulsion of the screw feeder. The inlet temperature of the high-temperature flue gas in the annular system 123 of the rotary dryer 1-1 is controlled at 600℃, and the outlet flue gas temperature is 280℃. Within the rotary dryer 1-1, the municipal solid waste is conveyed from the kiln head 11 to the kiln tail 13 as the kiln body 12 rotates, gradually achieving drying. The low-temperature water vapor generated during the drying process, at approximately 150℃, is extracted from the kiln tail 13 by the induced draft fan, washed with water, and then sent to the exhaust gas purification system.

[0067] The dried municipal solid waste with a moisture content of approximately 15% enters the gasification and melting furnace through a sealed feeding system. Simultaneously, the 40*40*60mm biomass blocks obtained in Example 1 are also fed into the gasification and melting furnace through the feed pipe 31 of the sealed feeding system 3, feeding them in layers with the municipal solid waste. This provides a gap for the escape of crude syngas and also provides sufficient reducing carbon for the melting section 4-2 to maintain the system temperature and reducing atmosphere. The municipal solid waste and biomass blocks move slowly downwards in the furnace, achieving pyrolysis at 300-800℃, gasification at 800-1100℃, and melting at 1100-1500℃. The organic matter is decomposed and gasified under the action of water vapor to form high-value-added crude syngas. The remaining inorganic components, dioxins, heavy metals, etc., eventually form liquid slag under a high-temperature reducing atmosphere.

[0068] The crude syngas generated in the gasification and melting furnace at 300°C is partially released by the blower and enters the combustion system 5 for complete combustion at 1200°C. After being distributed with circulating air, it produces high-temperature flue gas at 600°C. Part of the high-temperature flue gas then enters the annular system 123 and inner cylinder 122 of the rotary dryer 1-1 in sequence. After drying the municipal solid waste, it enters the tail gas treatment system together with the drying steam and is discharged in compliance with emission standards. A portion of the crude syngas is transported through pipelines to the gasification section of the gasification and melting furnace to provide sufficient heat for the gasification section. The remaining crude syngas can be utilized at high value based on demand. The liquid slag discharged from the bottom of the gasification and melting furnace is rapidly cooled and crushed after being washed with high-pressure water and enters the water storage solid slag storage tank for later use.

Claims

1. A biomass forming system, characterized by, The biomass briquetting system comprises a hopper (21), a briquetting device (22), a ring die mechanism (23) and a frame (24); the briquetting device (22) comprises a distributing device (221) and a roller device (222); the ring die mechanism (23) comprises a plurality of identical forming die groups (231) and triangular fixed blocks (232) distributed between adjacent forming die groups (231); the frame (24) is provided with a driving motor (241), the output shaft of the driving motor (241) is connected with the briquetting device (22) through a driving main shaft; the forming die group (231) is a variable cross-section through hole formed by symmetrically arranged half-wedge-shaped grooves; the larger cross-section end (234) of the forming die group (231) is arranged at the inner side of the ring die mechanism (23) and becomes the feeding hole of the ring die mechanism (23); the smaller cross-section end (235) of the forming die group (231) is arranged at the outer side of the ring die mechanism (23) and becomes the discharging hole of the ring die mechanism (23); the cross-sectional area of the discharging hole is smaller than that of the feeding hole.

2. The biomass forming system according to claim 1, wherein, The triangular fixed block (232) is provided with a temperature control heating device (233) for controlling the forming temperature.

3. The biomass forming system of claim 1, wherein, The distributing device (221) and the roller device (222) are arranged in the hopper (21), the distributing device (221) is arranged above the roller device (222) and both are connected with the driving main shaft of the driving motor (241); the shape and size of the roller teeth (223) of the roller device (222) are matched with the structure and size of the forming die group (231); when the roller device (222) rotates under the driving of the main shaft, the roller teeth (223) are connected with the forming die group (231) in a gear engagement manner, the material is forcedly pushed into the forming die group (231) so that the material enters the feeding hole.

4. The biomass forming system of claim 1, wherein, The cross-sectional areas of the feeding hole and the discharging hole of the forming die group (231) are set as 1.0:(0.75-0.95).

5. A solid waste gasification and melting disposal system characterized by, The biomass briquetting system (2) of claim 1, a drying system (1), a sealed feeding system (3), a gasification melting system (4) and a combustion system (5); the discharge port of the drying system (1) and the discharge port of the biomass briquetting system (2) are connected with the feeding port of the sealed feeding system (3) respectively, the discharge port of the sealed feeding system (3) is connected with the gasification melting system feeding port (411); the high-temperature flue gas inlet (124) of the drying system (1) is connected with the high-temperature flue gas outlet (54) of the combustion system (5); the gasification melting system coarse synthetic gas outlet (414) is connected with the combustion system coarse synthetic gas inlet (51); the gasification melting system (4) is further provided with a gasification melting system coarse synthetic gas inlet (412) and a first air inlet (413); the combustion system (5) is further provided with a second air inlet (53) and an independent burner (52).

Images