Comprehensive disposal production line for incineration and recycling of garbage and general solid waste

Abstract

The utility model relates to the field of garbage treatment, and particularly discloses a garbage and general solid waste incineration recycling comprehensive treatment production line, which comprises a screening system, a recycling system and a recycling system, the fermentation device is used for receiving and fermenting screen underflow of the screening system; the pyrolysis gasification furnace is used for receiving, pyrolyzing and gasifying oversize products of the combustion screening system; the granulation system is used for mixing and molding clay, a fermentation product of the fermentation device and slag of the pyrolysis gasification furnace; and the rotary kiln is used for sintering and drying the material formed by the granulation system. According to the production line, the treatment process is simple, the landfill leachate can enter the pyrolysis gasification furnace along with the garbage, a matched landfill leachate treatment system is not needed, the treatment cost is low, the reduction effect of the garbage is obvious, and ash powder generated after incineration can be used as a raw material for producing lightweight aggregate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of garbage treatment, especially relates to garbage and general solid waste incineration resource comprehensive disposal production line. BACKGROUND

[0002] With the dramatic increase of the city life garbage harmless treatment capacity, the life garbage gasification incineration facility is increasingly saturated, considering the distance, region and processing capacity factors, the market space of large life garbage gasification incineration plant is limited, the county, town life garbage treatment is gradually put on the agenda, and the state department also frequently issues documents to carry out county and even town small incineration facility pilot.

[0003] The existing patent application No. 201810654888.9, a kind of life and construction waste resource recycling process, comprising the following steps: life garbage processing: (1), fermentation treatment, produce marsh gas, (2), percolate treatment, get water, (3), pyrolysis gasification treatment, produce coke residue for standby, boiler heat absorption produces steam for power generation;Construction waste processing: (1), primary selection processing, (2), the preparation of recycled aggregate includes coarse crushing, sorting iron, fine crushing, vibration sorting, recycled aggregate and concrete with water production building materials.

[0004] The existing process for preparing lightweight aggregate from garbage is complex and tedious, the production cost is high, and a garbage leachate treatment system is required, so the practicality is low. UTILITY MODEL CONTENT

[0005] The utility model provides garbage and general solid waste incineration resource comprehensive disposal production line to solve the technical problem of the existing technology that the process for preparing lightweight aggregate from garbage is complex and tedious, the production cost is high, a garbage leachate treatment system is required, and the practicality is low.

[0006] To solve the above problems, the garbage and general solid waste incineration resource comprehensive disposal production line provided by the utility model adopts the following technical scheme: comprising:

[0007] The screening system is used for screening garbage.

[0008] The fermentation device is used for receiving and fermenting the undersize of the screening system.

[0009] The pyrolysis gasification furnace is used for receiving and pyrolysis gasification combustion of the oversize of the screening system.

[0010] The granulation system is used for mixing and forming clay, fermentation material in the fermentation device and slag produced by the pyrolysis gasification furnace.

[0011] The rotary kiln is used for sintering and drying the material formed by the granulation system.

[0012] Further, the second combustion chamber is further provided with a second air blower.

[0013] Further, the pyrolysis gasifier is further provided with a first air blower.

[0014] Further, the second combustion chamber is further provided with a second air blower.

[0015] Further, the rotary kiln is further provided with a tail gas treatment system, and the tail gas treatment system comprises an activated carbon adsorber and a bag filter.

[0016] Further, the second combustion chamber is further provided with a second air blower.

[0017] Further, the rotary kiln is further provided with a tail gas treatment system, and the tail gas treatment system comprises an activated carbon adsorber and a bag filter.

[0018] The garbage and general solid waste incineration resource comprehensive treatment production line has the advantages that:

[0019] 1. In the pyrolysis gasifier, the garbage is dried by the high-temperature flue gas generated by combustion in the drying stage, and the moisture is basically removed, so that the heat value of the garbage can be fully utilized to complete the thermal decomposition and combustion process, and the moisture content of the garbage composition is suitable for a wide range, so that no auxiliary fuel is needed in the garbage treatment process of the production line, and the operation cost can be effectively reduced.

[0020] 2. The garbage entering the pyrolysis gasifier needs to pass through the drying stage and the thermal decomposition stage, and then reach the combustion layer, so that the garbage treatment process in the pyrolysis gasifier is less affected by the change of the garbage composition, and the sieve residue can directly enter the pyrolysis gasifier for treatment without sorting, so that the production line has a wider application range.

[0021] 4. The production line has a simple treatment process, the garbage leachate can enter the pyrolysis gasifier together with the garbage, no garbage leachate treatment system is needed, the treatment cost is low, the garbage reduction effect is obvious, and the ash powder generated after incineration can be used as raw material for light aggregate production.

[0022] 5. The production line converts garbage and general solid waste into valuable resources, which helps to reduce environmental pollution and waste accumulation problems, promotes resource recycling and sustainable development, and realizes harmless, stabilization and resource treatment of household garbage. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the present application are illustrated by way of example and not limitation. Like or corresponding reference numerals are intended to indicate like or corresponding structural elements throughout the several views of the drawings, in which:

[0024] Figure 1 It is a schematic view of the garbage and general solid waste incineration resource comprehensive disposal production line of the present application.

[0025] Explanation of reference numerals:

[0026] 1, screening system; 2, fermentation device; 3, pyrolysis gasifier; 4, granulation system; 5, rotary kiln; 6, storage pool; 7, secondary combustion chamber; 8, first air blower; 9, second air blower; 10, activated carbon adsorber; 11, bag-type dust collector; 12, induced draft fan; 13, chimney. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be known by those skilled in the art that the embodiments described below are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] Any number of elements in the drawings is used for example, not limitation, and any naming is only used for distinction, not having any limiting meaning.

[0029] The principles and spirits of the present application will be explained in detail below with reference to several representative embodiments of the present application.

[0030] The garbage and general solid waste incineration resource comprehensive disposal production line provided by the present application, as shown in Figure 1 , comprises:

[0031] The screening system 1 is used for screening garbage;

[0032] The fermentation device 2 is used for receiving and fermenting undersize of the screening system 1;

[0033] The pyrolysis gasifier 3 is used for receiving and pyrolysis gasification combustion oversize of the screening system 1;

[0034] The granulation system 4 is used for mixing and forming clay, fermentation in the fermentation device 2 and slag produced by the pyrolysis gasifier 3;

[0035] A rotary kiln 5 is used to sinter and dry the material formed by the granulation system 4.

[0036] In this embodiment, the undersize of the screening system 1 is fermented in the fermentation device 2, and the oversize of the screening system 1 is pyrolyzed in the pyrolysis gasifier. The screening is the basis for subsequent processing steps, which ensures that waste of different properties can be separately processed in suitable processing steps, thereby improving the efficiency and resource recovery rate of the entire production line.

[0037] In this embodiment, the fermentation device 2 converts the undersize into organic fertilizer or bioenergy through a biological fermentation process. The fermentation device 2 not only reduces the volume and weight of organic waste but also converts it into valuable resources.

[0038] In this embodiment, the pyrolysis gasifier 3 converts the oversize into gas and slag through a high-temperature pyrolysis and gasification process. In the pyrolysis process, organic matter is decomposed into gas (such as hydrogen, methane, etc.) and solid residues (slag). The pyrolysis gasifier 3 not only reduces the volume of solid waste but also converts it into reusable energy (such as gas) and solid residues (slag), which can be further used for other purposes. It should be noted that the garbage in the pyrolysis gasifier 3 successively undergoes four continuous processes of drying, thermal decomposition, combustion, and burnout, and finally produces very little ash and slag discharged from the furnace body.

[0039] In this embodiment, during the drying stage, the garbage is dried by the high-temperature flue gas generated by combustion, and the moisture is basically removed. The heat value of the garbage itself can be fully utilized to complete the thermal decomposition and combustion process. The moisture content of the garbage components has a very wide range of applications, so the garbage treatment process in this production line does not need to use any auxiliary fuel, which can effectively reduce the operating cost.

[0040] In this embodiment, the garbage entering the pyrolysis gasifier 3 needs to go through the drying stage and the thermal decomposition stage, and then reach the combustion layer. Since the garbage entering the furnace does not directly contact the high-temperature combustion layer, the garbage treatment process in the pyrolysis gasifier 3 is less affected by changes in garbage composition, making the production line more adaptable.

[0041] In this embodiment, the granulation system 4 not only improves the utilization rate of waste but also creates new products (lightweight aggregates) with specific properties by mixing materials of different compositions. In the rotary kiln 5, the material is heated and rotated at high temperatures to remove moisture and make it more solid and durable. The rotary kiln 5 is the last step in the production line, which can effectively ensure the quality and stability of the final product. Through the sintering and drying process, the material is converted into solid products with specific purposes.

[0042] By adopting the above technical solutions, the production line converts garbage and general solid waste into valuable resources, which helps to reduce environmental pollution and waste accumulation problems, and promotes the recycling of resources and sustainable development.

[0043] In the embodiment, the production line further comprises a storage pool 6 located at an upper station of the screening system 1, and the garbage is unloaded into the storage pool 6 in the garbage room after being weighed by the load meter. The garbage is sent into the screening system 1 by the automatic grabbing device.

[0044] In the embodiment, the production line further comprises a secondary combustion chamber 7, and the pyrolysis gasification furnace 3 and the rotary kiln 5 are connected with the secondary combustion chamber 7, so that the flue gas generated in the pyrolysis gasification furnace 3 enters the secondary combustion chamber 7 for secondary combustion, removes dioxin in the flue gas, and makes the high-temperature flue gas (1100℃ flue gas) generated in the secondary combustion chamber 7 become a heat source of the rotary kiln 5.

[0045] In the embodiment, the production line forms a closed energy utilization system by connecting the pyrolysis gasification furnace 3, the rotary kiln 5 and the secondary combustion chamber 7, which not only improves the energy utilization rate, but also effectively reduces the demand for external heat sources, thereby reducing the operation cost of the production line. In the production line, the introduction of the secondary combustion chamber 7 not only improves the environmental performance of the production line, but also helps to improve the economic benefits.

[0046] In the embodiment, the production line further comprises a first air blower 8 corresponding to the pyrolysis gasification furnace 3. The first air blower 8 is used to provide oxygen to the pyrolysis gasification furnace 3 to support the pyrolysis and gasification process of the organic matter in the furnace, ensure the full combustion reaction in the pyrolysis gasification furnace 3, and improve the pyrolysis efficiency and product quality.

[0047] In the embodiment, the production line further comprises a second air blower 9 corresponding to the secondary combustion chamber 7. The second air blower 9 is used to provide necessary oxygen to the secondary combustion chamber 7 to support the secondary combustion process. In the secondary combustion process, the oxygen provided by the second air blower 9 helps to completely oxidize and decompose harmful substances (such as dioxin) in the flue gas generated by the pyrolysis gasification furnace 3 to generate harmless substances. In the embodiment, the presence of the second air blower 9 ensures the full combustion reaction in the secondary combustion chamber 7, which is a key link to remove harmful substances in the flue gas. At the same time, it also improves the heat value of the high-temperature flue gas, providing a more stable and efficient heat source for the rotary kiln 5.

[0048] It should be noted that in the embodiment, the combustion process of the garbage in the pyrolysis gasification furnace 3 is carried out in a low-oxygen state, which can inhibit the generation of various harmful gases, and the generated NOx, SOx and HCl are less, and the exhaust volume is also less. In the secondary combustion chamber 7, the temperature is controlled at 850-1000℃ by adopting over-oxygen combustion, and the gas residence time is greater than 2 seconds, which can completely burn and decompose polychlorinated biphenyl substances and residual carbon, so that the dioxin residual amount is extremely small. Moreover, the production line adopts a countercurrent flow direction with a relatively low flow rate, and the particulate matter entrained in the flue gas is also less.

[0049] In the embodiment, the first air blower 8 and the second air blower 9 correspond to the storage pool 6, and the oxygen required for the waste pyrolysis and gasification and the combustion of the secondary combustion chamber 7 is from the storage pool 6, so that the odor of the waste storage pool 6 can be effectively reduced.

[0050] In the embodiment, the rotary kiln 5 is connected with a tail gas treatment system, the tail gas treatment system comprises an activated carbon adsorber 10 and a bag-type dust collector 11 connected in series between the rotary kiln 5 and a discharge port, and is used for treating the high-temperature flue gas generated by the secondary combustion chamber 7, so that the high-temperature flue gas generated by the secondary combustion chamber 7 can reach the emission standard after providing heat source for the rotary kiln 5. In the embodiment, the activated carbon has strong adsorption capacity and can adsorb harmful substances (such as dioxin and heavy metals) in the flue gas, so as to further purify the flue gas, and the bag-type dust collector 11 can remove solid particles in the flue gas through the filtering effect of the filter bag, so as to ensure that the flue gas discharged reaches the national or local emission standard.

[0051] In the embodiment, the production line further comprises an induced draft fan 12 and a chimney 13, the induced draft fan 12 corresponds to the bag-type dust collector 11 and the chimney 13 respectively, so that the flue gas flows in the direction of the chimney 13 under the action of the induced draft fan 12. In the embodiment, the flue gas purified by the bag-type dust collector 11 flows in the direction of the chimney 13 under the action of the induced draft fan 12, so as to ensure that the flue gas can be smoothly and stably discharged from the production line.

[0052] The waste and general solid waste incineration resource comprehensive treatment production line provided by the utility model, after the waste is weighed and measured, the waste is unloaded into the storage pool 6 in the waste room, the waste is sent into the screening system 1 through the automatic grabbing device, the undersize material is fermented in the fermentation device 2, the oversize material combustible material can be pyrolyzed and gasified and combusted in the pyrolysis furnace, the produced slag can enter the granulation system 4 to provide raw material for manufacturing light aggregate, the produced flue gas enters the secondary combustion chamber 7 for secondary combustion, harmful substances such as dioxin in the flue gas are removed, the high-temperature flue gas (1100 DEG C flue gas) can provide heat source for the drying and sintering of light aggregate and then enters the tail gas treatment system, the flue gas is discharged after being adsorbed by the activated carbon adsorption device and being filtered by the bag-type dust collector. After a certain proportion of clay is added to the slag and the fermented undersize material produced in the waste treatment process, the slag and the fermented undersize material are formed into the rotary kiln 5 through the granulation system 4, are sintered and dried, and are cooled to become light aggregate products for sale, and the whole production line fully utilizes the products of waste treatment and the produced heat source, so that the waste is harmlessly, stably and resourcefully treated.

[0053] According to the above description of the present specification, those skilled in the art can also understand that the terms used such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, which are only for the purpose of facilitating the description of the scheme of the present application and simplifying the description, and are not explicitly or implicitly indicated that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation, therefore the above orientation or positional relationship terms cannot be understood or interpreted as a limitation on the scheme of the present application.

[0054] In addition, in the description of the present specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise explicitly and specifically limited.

Claims

1. A garbage and general solid waste incineration resource utilization comprehensive disposal production line, characterized in that, The application relates to a waste treatment system. The system comprises: a screening system for screening waste; a fermentation device for receiving and fermenting undersize of the screening system; a pyrolysis gasification furnace for receiving and pyrolysis gasification combustion oversize of the screening system; a granulation system for mixing and forming clay, fermentation product of the fermentation device and furnace slag of the pyrolysis gasification furnace; 2. The garbage and general solid waste incineration and resource utilization comprehensive treatment production line according to claim 1, characterized in that, a rotary kiln for sintering and drying the material formed by the granulation system.

3. The garbage and general solid waste incineration and resource utilization comprehensive treatment production line according to claim 2, characterized in that, The system further comprises a second combustion chamber, the pyrolysis gasification furnace and the rotary kiln are communicated with the second combustion chamber, so that flue gas generated in the pyrolysis gasification furnace enters the second combustion chamber for secondary combustion, dioxin in the flue gas is removed, and high-temperature flue gas generated in the second combustion chamber becomes a heat source of the rotary kiln.

4. The garbage and general solid waste incineration and resource utilization comprehensive treatment production line according to claim 2, characterized in that, The system further comprises a first air blower corresponding to the pyrolysis gasification furnace.

5. The garbage and general solid waste incineration and resource utilization comprehensive treatment production line according to claim 2, characterized in that, The system further comprises a second air blower corresponding to the second combustion chamber.

6. The waste and general solid waste incineration and resource utilization comprehensive treatment production line according to claim 5, characterized in that, The rotary kiln is communicated with a tail gas treatment system, the tail gas treatment system comprises an activated carbon adsorber and a bag-type dust collector, so that high-temperature flue gas generated in the second combustion chamber can reach an emission standard after providing a heat source for the rotary kiln.

7. The waste and general solid waste incineration resource utilization comprehensive treatment production line according to any one of claims 1 to 5, characterized in that, The system further comprises an induced draft fan and a chimney, the induced draft fan corresponds to the bag-type dust collector and the chimney respectively, so that flue gas flows in a direction towards the chimney under the action of the induced draft fan. The system further comprises a storage pool, the storage pool is located at an upper station of the screening system.

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