CN109013662B - Household garbage sorting and drying system - Google Patents
Household garbage sorting and drying system Download PDFInfo
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- CN109013662B CN109013662B CN201811045034.7A CN201811045034A CN109013662B CN 109013662 B CN109013662 B CN 109013662B CN 201811045034 A CN201811045034 A CN 201811045034A CN 109013662 B CN109013662 B CN 109013662B
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- 239000000463 material Substances 0.000 claims abstract description 55
- 229920003023 plastic Polymers 0.000 claims abstract description 50
- 239000004033 plastic Substances 0.000 claims abstract description 50
- 239000011521 glass Substances 0.000 claims abstract description 24
- 239000006148 magnetic separator Substances 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 15
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 15
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 14
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 238000000926 separation method Methods 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 230000003139 buffering effect Effects 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 230000001877 deodorizing effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 13
- 238000004064 recycling Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 6
- 238000012216 screening Methods 0.000 description 6
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- 238000011161 development Methods 0.000 description 4
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000149 chemical water pollutant Substances 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
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- 238000010276 construction Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/02—Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a household garbage sorting and drying system which can improve the heat value of garbage, reduce the water content of the household garbage, effectively recycle most of metal, plastic and other recycled materials, and has high recycling degree of wastes, so that the garbage is changed into high heat value fuel. The garbage front sorting system comprises a primary garbage grab crane, a bag breaking crusher, front sorting conveyors I to seven, a first magnetic separator, a front sorting drum screen, a first and a second bouncing screens, a first to four photoelectric sorting machines, other plastic belt bins, an HDPE plastic belt bin, an LDPE plastic belt bin and a front sorting packer; the garbage drying system comprises a drying bin grab crane, a drying bin, a drying conveyor I and a pre-drying buffer bin; the garbage post-sorting system comprises post-sorting conveyors I to eight, belt bins I and II, a post-sorting drum screen, a relaxation screen, a glass sorting machine, a disc homogenizer, a magnetic separator II, a winnowing machine, an eddy current sorting machine, a post-sorting packer and an outward conveying conveyor.
Description
Technical Field
The invention relates to a household garbage sorting and drying system which is mainly used for a household garbage sorting and drying treatment factory.
Background
With the development of economy and society and the improvement of material consumption level, the domestic garbage yield of China is rapidly increased, so that the environmental hidden trouble is more prominent. According to the data of the living building department, the urban domestic garbage cleaning and transporting amount of the national market in 2015 is 1.91 hundred million tons, and the urban domestic garbage cleaning and transporting amount of the urban domestic garbage is 2 hundred million tons in 2016. It is evident that in recent years the yield of household waste will still keep on increasing. If the huge amount of household garbage cannot be effectively treated, the living environment of people is seriously influenced, so that garbage classification is not slow. In 3 months 2017, the office hall of the national institutes forwards national development reform committee and housing urban and rural construction department 'living garbage classification system implementation scheme' to promote the classification of the living garbage and promote the recycling of resources. Through garbage classification, not only can the reduction of garbage be realized and the recycling of the garbage be realized, but also the household garbage can be changed into valuable, and the sustainable development is facilitated; and the treatment efficiency of the subsequent garbage can be improved, and the treatment difficulty is reduced.
Although garbage classification has been performed for many years, the performance is not satisfactory. According to the report of classification and investigation of household garbage in Shanghai city, issued by Shanghai city greening city capacity bureau in 2016, a district is provided with a classification garbage can, but the garbage mixing rate is as high as 80%, the classification garbage can becomes a furnishing, in the investigation process, people exceeding C17% do not pay attention to garbage classification at ordinary times, and only 13.3% of investigators can accurately distinguish the garbage classification. And even if some residents achieve source classification, sanitation enterprises cannot achieve classified collection and classified transportation, so that garbage is mixed after being separated, and idle work is achieved.
In order to solve the problems of recycling garbage, improving the heat value of the garbage and reducing the difficulty in treating tail gas generated by garbage combustion, the design and development of a household garbage sorting and drying technology are needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a household garbage sorting and drying system with reasonable structural design, which can improve the heat value of garbage, reduce the water content of the household garbage, effectively recycle most of metal, plastic and other recycled materials, and has high recycling degree of wastes, so that the garbage is changed into high heat value fuel.
The invention solves the problems by adopting the following technical scheme: a household garbage sorting and drying system is characterized in that: the garbage drying system comprises a pre-garbage sorting system, a garbage drying system and a post-garbage sorting system;
the garbage front sorting system comprises a primary garbage grab crane, a bag breaking crusher, a front sorting conveyor I, a front sorting conveyor II, a front sorting conveyor III, a front sorting conveyor IV, a front sorting conveyor VI, a front sorting conveyor seven, a magnetic separator I, a front sorting drum screen, a photoelectric sorting machine III, a photoelectric sorting machine IV, a bouncing screen I, a bouncing screen II, a photoelectric sorting machine I, a photoelectric sorting machine II, other plastic belt bins, an HDPE plastic belt bin, an LDPE plastic belt bin and a front sorting packer; the primary garbage grab bucket crane is matched with the bag breaking crusher; the bag breaking crusher is connected with the front sorting drum screen through a front sorting conveyor I; the first magnetic separator is arranged on the first front sorting conveyor; the front sorting drum screen is respectively connected with the front sorting conveyor II, the front sorting conveyor III and the photoelectric sorting machine IV; the front sorting conveyor III is connected with the photoelectric sorting machine III; the third photoelectric separator and the fourth photoelectric separator are connected with the second front separation conveyor; the photoelectric separator III is connected with the bouncing screen I through the front separation conveyor IV; the first bouncing screen and the second bouncing screen are connected with the photoelectric separator through a fifth front separation conveyor; the bouncing screen I and the photoelectric separator II are connected with the front separation conveyor II; the photoelectric sorting machine is connected with the front sorting conveyor III and the bouncing screen III through the front sorting conveyor III; the second bouncing screen is connected with the second photoelectric separator; the second photoelectric separator is connected with the LDPE plastic belt bin; the photoelectric separator I is connected with other plastic belt bins and HDPE plastic belt bins; the other plastic belt bins, the HDPE plastic belt bins and the LDPE plastic belt bins are all connected with the front sorting packer through a front sorting conveyor seven;
the garbage drying system comprises a drying bin grab crane, a drying bin, a drying conveyor I and a pre-drying buffer bin; the grab bucket crane of the drying bin is respectively matched with the drying bin, the first drying conveyor and the pre-drying buffer bin; the front sorting conveyor II is connected with a drying front buffer bin;
the garbage post-sorting system comprises a post-sorting conveyor I, a post-sorting conveyor II, a post-sorting conveyor III, a post-sorting conveyor IV, a post-sorting conveyor V, a post-sorting conveyor VI, a post-sorting conveyor seven, a post-sorting conveyor eight, a belt bin I, a belt bin II, a post-sorting drum screen, a relaxation screen, a glass sorting machine, a disc homogenizer, a magnetic separator II, a winnowing machine, an eddy current sorting machine, a post-sorting packer and an outward transport conveyor; the drying conveyor I and the post sorting drum screen are connected in sequence; the post-sorting drum screen is connected with the relaxation screen through a post-sorting conveyor II and is connected with a post-sorting conveyor five through a post-sorting conveyor seven; the relaxation sieve is connected with the belt bin through a third post-sorting conveyor, and the relaxation sieve is also connected with the glass sorting machine; the belt bin I is connected with the post sorting conveyor IV; the glass sorting machine, the post-sorting conveyor five, the disc homogenizer, the post-sorting conveyor six and the winnowing machine are connected in sequence; a second magnetic separator is arranged on the sixth post-sorting conveyor; the winnowing machine is connected with the vortex separator; the vortex separator is connected with the outward transport conveyor; the winnowing machine is connected with the second belt bin through the eighth post-sorting conveyor; the second belt bin is connected with the fourth post-sorting conveyor; and the rear sorting conveyor IV is respectively connected with the packer and the outward conveying conveyor.
The garbage drying system also comprises a second drying conveyor, wherein the second drying conveyor is arranged on one side of the drying bin; the second drying conveyor is connected with the first drying conveyor.
The post-garbage sorting system also comprises a combustible film winding machine, and the post-sorting packer is connected with the combustible film winding machine.
The first sorting conveyor, the second sorting conveyor, the third sorting conveyor, the fourth sorting conveyor, the fifth sorting conveyor, the sixth sorting conveyor and the seventh sorting conveyor are all belt conveyors.
The first drying conveyor is a stepping feeder, and the second drying conveyor is a belt conveyor.
The first post-sorting conveyor, the second post-sorting conveyor, the third post-sorting conveyor, the fourth post-sorting conveyor, the fifth post-sorting conveyor, the sixth post-sorting conveyor, the seventh post-sorting conveyor and the eighth post-sorting conveyor are all belt conveyors.
The garbage drying system is connected with an exhaust gas deodorizing device and a percolate treatment device.
The pre-garbage sorting system also comprises an iron material conveyor and an iron material buffer bin, and the first magnetic separator is connected with the iron material buffer bin through the iron material conveyor.
The garbage post-sorting system also comprises a nonferrous metal conveyor and a nonferrous metal buffer bin, wherein the second magnetic separator and the vortex separator are connected with the nonferrous metal buffer bin through the nonferrous metal conveyor.
The post-garbage sorting system also comprises a glass buffering bin, and the glass sorting machine is connected with the glass buffering bin.
The pre-garbage sorting system and the post-garbage sorting system are connected with a dust removing system.
Compared with the prior art, the invention has the following advantages and effects: the invention has reasonable structural design, and according to the principles of innocuity, reduction and reclamation, the urban domestic garbage is dried and separated and pretreated on the premise of realizing clean production, the resource substances are separated, the incombustible substances and harmful substances are removed, the heat value is improved, and then the combustible substances are packed (wound on a film) to prepare the Solid Regenerated Fuel (SRF). The dried and separated garbage is made into clean fuel (SRF) and then burnt, compared with direct burning, the burning of the boiler is more stable, the burning is more sufficient, and the CO can be reduced 2 NOx, CO emissions. The garbage is dried and separated to be used as a homogeneous fuel, the garbage components are relatively single, and garbage components such as plastics and the like which are easy to form dioxin and hydrogen chloride are basically removed from the incinerator, so that the emission of the dioxin and the hydrogen chloride is greatly reduced compared with the emission of direct combustion. Compared with the direct combustion of garbage, the slag amount and the fly ash amount can be greatly reduced. Most of metal, plastic and other recycled materials can be effectively recycled through front-back separation of the drying process, the waste recycling degree is high, and the waste can enter a resource market to generate benefits.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
Referring to fig. 1, an embodiment of the present invention includes a pre-waste sorting system a, a waste drying system B, and a post-waste sorting system C.
The pre-garbage sorting system A is used for shaping and recycling the materials before drying the incoming materials, and controlling the particle size of the materials in a proper range so as to achieve the optimal drying effect; and simultaneously, the resource materials which are easy to deteriorate after drying or are difficult to recover after drying are separated in advance.
The garbage front sorting system A comprises a primary garbage grab crane A1, a bag breaking crusher A2, a front sorting conveyor A3, a front sorting conveyor A4, a front sorting conveyor A5, a front sorting conveyor A6, a front sorting conveyor A7, a front sorting conveyor A8, a front sorting conveyor A9, a magnetic separator A10, a front sorting drum screen A11, a photoelectric sorting machine A12, a photoelectric sorting machine A13, a bouncing screen A14, a bouncing screen A15, a photoelectric sorting machine A16, a photoelectric sorting machine A17, other plastic belt bins A18, an HDPE plastic belt bin A19, an LDPE plastic belt bin A20, a front sorting packer A21, an iron material conveyor A22 and an iron material buffer bin A23.
The first front sorting conveyor A3, the second front sorting conveyor A4, the third front sorting conveyor A5, the fourth front sorting conveyor A6 and the fifth front sorting conveyor A7 are all belt conveyors.
The three A12 and four A13 photoelectric separators can separate plastics, the first A16 photoelectric separator can separate HDPE, and the second A17 photoelectric separator can separate LDPE.
The primary garbage grab crane A1 is matched with the bag breaking crusher A2. The bag breaking crusher A2 is connected with the front sorting drum screen A11 through a front sorting conveyor A3. The front sorting conveyor A3 is provided with a magnetic separator A10. The front sorting drum screen A11 is respectively connected with a front sorting conveyor II A4, a front sorting conveyor III A5 and a photoelectric sorting machine IV A13. The front sorting conveyor three A5 is connected with the photoelectric sorting machine three A12. And the photoelectric separator III A12 and the photoelectric separator IV A13 are connected with the front sorting conveyor II A4. The photoelectric separator III A12 is connected with the bouncing screen I A14 through the front separation conveyor IV A6. The first bouncing screen A14 and the second bouncing screen A15 are connected with the first photoelectric separator A16 through a fifth A7 front separation conveyor; the first bouncing screen A14 and the second photoelectric separator A17 are connected with the second front separation conveyor A4. The photoelectric separator IV A13 is connected with the bouncing screen II A15 through the front separation conveyor six A8. The second bouncing screen A15 is connected with the second photoelectric separator A17. And the photoelectric separator II A17 is connected with the LDPE plastic belt bin A20. The photoelectric separator A16 is connected with other plastic belt bins A18 and HDPE plastic belt bins A19. The other plastic belt bin A18, the HDPE plastic belt bin A19 and the LDPE plastic belt bin A20 are all connected with the front sorting packer A21 through the front sorting conveyor seven A9. The first magnetic separator A10 is connected with an iron material buffer bin A23 through an iron material conveyor A22.
The material is unloaded to the primary garbage storage pit by sanitation vehicle, and the material is loaded to the bag breaking crusher A2 by the primary garbage grab crane A1, and the particle size of the material is controlled within 300mm, so that the sorting efficiency of subsequent treatment equipment is improved. The crushed materials are magnetically separated by a magnetic separator A10 on a front separation conveyor A3 and then conveyed to a front separation drum screen A11 for screening; the iron materials magnetically selected by the first magnetic separator A10 are sent into an iron material buffer bin A23 through an iron material conveyor A22. The materials with the diameter smaller than 80mm screened by the front sorting roller screen A11 are conveyed into the pre-drying buffer bin B5 through the front sorting conveyor A4. The materials with the diameters of 80-140mm screened by the front sorting drum screen A11 are conveyed to the photoelectric sorting machine A12 through the front sorting conveyor A5, all plastic materials in the materials are sorted by the photoelectric sorting machine A12, and the rest materials are conveyed into the pre-drying buffer bin B5 through the front sorting conveyor A4. All plastic materials are sorted from the materials with the diameter larger than 140mm screened by the front sorting drum screen A11 through the photoelectric sorting machine A13, and the rest materials are conveyed into the pre-drying buffer bin B5 through the front sorting conveyor A4. The plastic materials separated by the photoelectric separator III A12 are conveyed to the first bouncing screen A14 for screening through the fourth front sorting conveyor A6, and the 3D material discharged by the first bouncing screen A14 is conveyed to the first photoelectric separator A16 through the fifth front sorting conveyor A7 to further separate HDPE plastics and other 3D plastics. The 2D object and the undersize object of the first bouncing screen A14 are summarized and conveyed into a pre-drying buffer bin B5 through a second pre-sorting conveyor A4. The plastics sorted by the photoelectric sorting machine IV A13 are conveyed to the second bouncing screen A15 through the front sorting conveyor VI A8 for screening, and the 3D material discharged by the second bouncing screen A15 is also conveyed to the first photoelectric sorting machine A16 through the front sorting conveyor V A7 for further separating HDPE plastics and other 3D plastics. The 2D material of the second bouncing screen A15 enters a second photoelectric separator A17 to separate LDPE, and other materials are conveyed into a pre-drying buffer bin B5 through a second pre-separation conveyor A4. The plastics separated by the photoelectric separator II A17 and the photoelectric separator I A16 are classified and enter other corresponding plastic belt bins A18, HDPE plastic belt bin A19 and LDPE plastic belt bin A20 for storage. The plastic in the belt bin enters the front sorting packer A21 in batches through the front sorting conveyor seven A9, and is packed into a block for storage.
The garbage drying system B is used for improving the heat value of garbage, reducing the water content of the garbage, and improving the sorting effect after garbage and the garbage burning quality in a furnace.
The garbage drying system B comprises a drying bin grab crane B1, a drying bin B2, a drying conveyor I B3, a drying conveyor II B4 and a pre-drying buffer bin B5.
The drying bin grab crane B1 is respectively matched with the drying bin B2, the drying conveyor B3 and the pre-drying buffer bin B5. And the drying conveyor II B4 is arranged on one side of the drying bin B2. And the second drying conveyor B4 is connected with the first drying conveyor B3. The front sorting conveyor II A4 is connected with the pre-drying buffer bin B5.
The drying conveyor B3 is a stepping feeder and is provided with a bin. And the drying conveyor B4 is a belt conveyor.
The biological drying of the garbage is carried out in 10 drying bins B2, and the garbage of the pre-drying buffer bin B5 is sent into the drying bins B2 through the grab bucket crane B1 of the drying bins. The drying bin B2 is made of concrete and can be used for heat preservation. The top cover of the drying bin B2 is of a movable type and is of a heat insulation steel structure type. Therefore, in the drying process, the air in the drying bin B2 is isolated from the air outside the drying bin. The top cover is provided with a sealing ring for one circle, so that the drying bin B2 is sealed and isolated from the outside. The bottom of the drying bin B2 is provided with a ventilation floor, and air is input to the drying bin B2. And an air suction port is arranged at the upper part of the rear wall of the drying bin B2.
Before filling garbage, the drying bin grab crane B1 firstly grabs the hatch cover into a side sliding rail, and then the hatch cover is closed again. And collecting the garbage scattered on the drying cabin cover in the operation of the drying cabin grab crane B1 to a drying conveyor B4 by utilizing a drying cabin cleaning trolley, and conveying the garbage to a drying conveyor B3.
The drying air comes from the drying hall and a part of the outside fresh air.
The drying process in the bio-drying unit consists of 3 stages:
(1) Stage one: reaching an operating temperature of about 45 ℃ (heating stage);
(2) Stage two: a stage of decomposing the organic matter at a temperature of about 45 ℃;
(3) Stage three: cooling of dried household garbage
In the embodiment, the water content of the final material in the biological drying process is less than 30%, and the biological drying period is about 8 days. In biological drying, the air flow rate of each drying bin B2 is different, and the drying bins B2 are automatically set according to the temperature and the biological drying materials through PLC control.
In the whole drying process of the garbage, the ventilation system controlled by the computer ensures the aerobic condition in the drying bin and simultaneously balances and regulates the proportion of air and humidity. Firstly, heat is generated in the aerobic biodegradation process, so that the temperature of garbage in a drying bin can be increased, and meanwhile, continuously input fresh air is heated; these circulating hot gases can absorb more moisture released from the waste, and finally form steam to be discharged. When nearly saturated warm air leaves the drying bin, moisture in the waste is carried away in the form of steam.
The garbage drying system B is connected with an exhaust gas deodorizing device E, and all discharged exhaust gas is collected and is discharged into the atmosphere after being purified by the exhaust gas deodorizing device E.
The garbage drying system B is connected with a percolate treatment device F, a small amount of percolate generated in the drying process of the household garbage and the coagulated wastewater of the air pipe can be collected through a percolate drain pipe, and the household garbage is subjected to centralized treatment through the percolate treatment device F after discharged.
After drying, the grab bucket crane B1 of the drying bin is responsible for emptying the garbage in the drying bin B2, the dried material is sent to the drying conveyor B3, and the material is sent to the garbage post-sorting system by the drying conveyor B3.
The post-garbage sorting system C is used for separating inert materials, magnetizable metals, non-magnetizable nonferrous metals, glass and other materials in garbage.
The garbage post-sorting system C comprises a post-sorting conveyor C1, a post-sorting conveyor C2, a post-sorting conveyor C3, a post-sorting conveyor C4, a post-sorting conveyor C5, a post-sorting conveyor C6, a post-sorting conveyor C7, a post-sorting conveyor C8, a belt bin C9, a belt bin C10, a post-sorting drum screen C11, a relaxation screen C12, a glass sorter C13, a disc homogenizer C14, a magnetic separator C15, a winnowing machine C16, an eddy current sorter C17, a post-sorting packer C18, a combustible material film winding machine C19, an outward conveying conveyor C20, a nonferrous metal conveyor C21, a nonferrous metal buffer bin C22 and a glass buffer bin C23.
The drying conveyor I B3, the post-sorting conveyor I C1 and the post-sorting rotary screen C11 are sequentially connected. The post-sorting rotary screen C11 is connected with the relaxation screen C12 through a post-sorting conveyor C2 and is connected with a post-sorting conveyor C5 through a post-sorting conveyor C7. Zhang Chishai C12 is connected with a first belt bin C9 through a third post-sorting conveyor C3, and a relaxation sieve C12 is also connected with a glass sorting machine C13. And the first belt bin C9 is connected with the fourth post sorting conveyor C4. The glass separator C13, the post-separation conveyor C5, the disc homogenizer C14, the post-separation conveyor C6 and the winnowing machine C16 are connected in sequence. And a second magnetic separator C15 is arranged on the sixth C6 post-sorting conveyor. The air separator C16 is connected with the vortex separator C17. The vortex separator C17 is connected to the outbound conveyor C20. The winnowing machine C16 is connected with the second belt bin C10 through the eighth C8 of the post sorting conveyor. The post sort conveyor four C4 is connected to the post sort packer C18 and the outbound conveyor C20, respectively. And the second belt bin C10 is connected with the fourth post-sorting conveyor C4. The post-sorting packer C18 is connected to a combustible film winder C19. The second magnetic separator C15 and the vortex separator C17 are connected with a nonferrous metal buffer bin C22 through a nonferrous metal conveyor C21. The glass separator C13 is connected to the glass buffer C23.
The first post-sorting conveyor C1, the second post-sorting conveyor C2, the third post-sorting conveyor C3, the fourth post-sorting conveyor C4, the fifth post-sorting conveyor C5, the sixth post-sorting conveyor C6, the seventh post-sorting conveyor C7 and the eighth post-sorting conveyor C8 are all belt conveyors.
The dried garbage is sent to a post-sorting conveyor C1 by a drying conveyor B3 and enters a post-sorting drum screen C11 for screening. The material with the diameter smaller than 19mm screened by the post-sorting roller screen C11 enters Zhang Chishai C12 for screening through a post-sorting conveyor C2. The materials with the diameters less than or equal to 16mm screened by Zhang Chishai C12 directly enter the belt bin C9 for storage through the post sorting conveyor C3, and are subsequently conveyed to a trailer box for external transportation and landfill through the post sorting conveyor C4 and the external transportation conveyor C20. The materials with the diameters of 16-C19mm screened by Zhang Chishai C12 are separated by a glass separator C13, the glass enters a glass buffer bin C23 for storage, and other materials enter a winnowing machine C16 for treatment after being magnetically separated by a post-separation conveyor five C5, a disc homogenizer C14, a post-separation conveyor six C6 and a magnetic separator two C15. The materials with the diameters larger than 19mm screened by the post-sorting drum screen C11 are conveyed to the disc homogenizer C14 for homogenization by the post-sorting conveyor C5, and then are gathered with the materials with the diameters of 12-19mm and enter the winnowing machine C16 for treatment. After the heavy matters selected by the wind separator C16 are separated from nonferrous metals by the vortex separator C17, the residues are conveyed to a trailer box for external transportation and landfill by an external transportation conveyor C20; the light matters which are selected by the winnowing machine C16 through the wind are conveyed to a second belt bin C10 by a post-sorting conveyor eight C8. The nonferrous metals selected by the second magnetic separator C15 and the vortex separator C17 enter a nonferrous metal buffer bin C22 through a nonferrous metal conveyor C21. The materials in the second belt bin C10 are sent to a post-sorting packer C18 through a post-sorting conveyor C4, and then a combustible material film winding machine C19 winds films, so that SRF materials are packed into package blocks for shipping and selling.
The pre-garbage sorting system A and the post-garbage sorting system C are connected with a dust removing system D. Dust generated on the pre-garbage sorting system A and the post-garbage sorting system C enters the dust removing system D for treatment.
In the embodiment, the garbage treatment amount is 600t/d, wherein the operation time of the pre-garbage sorting system A and the post-garbage sorting system C is 15 hours per day, and the operation time of the garbage drying system B is 24 hours per day. The composition of the garbage is considered according to the composition of garbage in a certain place in China.
After the 600t/d factory entering garbage is sorted by the pre-garbage sorting system A, plastic resource objects are screened out. Wherein the HDPE is about 11.4t/d; LDPE is about 33.15t/d; other plastics are about 30.75t/d. A portion of the ferromagnetic metal was screened out, about 3t/d. And part of the landfill leachate is separated out, and the concentration is about 9t/d. The waste transported to the waste drying system after the front sorting is about 512.7t/d.
After the garbage of 512.7t/d is dried, the water content of the garbage of about 102.42t/d is taken away in the form of steam. And part of the landfill leachate is separated out, namely about 5.1t/d. In the embodiment, the water content of the garbage before drying is about 45%, and the water content of the garbage after drying is reduced to 30%.
And 404.58t/d, conveying the dried garbage to a garbage post-sorting system C, and screening SRF and other resource objects. Wherein SRF is about 363.15t/d; the ferromagnetic metal is about 10.05t/d; glass about 0.6t/d and nonferrous metal about 1.05t/d. In the embodiment, the daily waste entering the factory is about 600t/d, and the SRF generated after sorting and drying is 363.15t/d, accounting for 60.525% of the waste entering the factory.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present invention. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A household garbage sorting and drying system is characterized in that: the garbage drying system comprises a pre-garbage sorting system, a garbage drying system and a post-garbage sorting system;
the garbage front sorting system comprises a primary garbage grab crane, a bag breaking crusher, a front sorting conveyor I, a front sorting conveyor II, a front sorting conveyor III, a front sorting conveyor IV, a front sorting conveyor V, a front sorting conveyor VI, a front sorting conveyor seven, a magnetic separator I, a front sorting drum screen, a bouncing screen I, a bouncing screen II, a photoelectric sorter I, a photoelectric sorter II, a photoelectric sorter III, a photoelectric sorter IV, other plastic belt bins, an HDPE plastic belt bin, an LDPE plastic belt bin and a front sorting packer; the primary garbage grab bucket crane is matched with the bag breaking crusher; the bag breaking crusher is connected with the front sorting drum screen through a front sorting conveyor I; the first magnetic separator is arranged on the first front sorting conveyor; the front sorting drum screen is respectively connected with the front sorting conveyor II, the front sorting conveyor III and the photoelectric sorting machine IV; the front sorting conveyor III is connected with the photoelectric sorting machine III; the third photoelectric separator and the fourth photoelectric separator are connected with the second front separation conveyor; the photoelectric separator III is connected with the bouncing screen I through the front separation conveyor IV; the first bouncing screen and the second bouncing screen are connected with the photoelectric separator through a fifth front separation conveyor; the bouncing screen I and the photoelectric separator II are connected with the front separation conveyor II; the photoelectric sorting machine is connected with the front sorting conveyor III and the bouncing screen III through the front sorting conveyor III; the second bouncing screen is connected with the second photoelectric separator; the second photoelectric separator is connected with the LDPE plastic belt bin; the photoelectric separator I is connected with other plastic belt bins and HDPE plastic belt bins; the other plastic belt bins, the HDPE plastic belt bins and the LDPE plastic belt bins are all connected with the front sorting packer through a front sorting conveyor seven;
the garbage drying system comprises a drying bin grab crane, a drying bin, a drying conveyor I and a pre-drying buffer bin; the grab bucket crane of the drying bin is respectively matched with the drying bin, the first drying conveyor and the pre-drying buffer bin; the front sorting conveyor II is connected with a drying front buffer bin;
the garbage post-sorting system comprises a post-sorting conveyor I, a post-sorting conveyor II, a post-sorting conveyor III, a post-sorting conveyor IV, a post-sorting conveyor V, a post-sorting conveyor VI, a post-sorting conveyor seven, a post-sorting conveyor eight, a belt bin I, a belt bin II, a post-sorting drum screen, a relaxation screen, a glass sorting machine, a disc homogenizer, a magnetic separator II, a winnowing machine, an eddy current sorting machine, a post-sorting packer and an outward transport conveyor; the drying conveyor I and the post sorting drum screen are connected in sequence; the post-sorting drum screen is connected with the relaxation screen through a post-sorting conveyor II and is connected with a post-sorting conveyor five through a post-sorting conveyor seven; the relaxation sieve is connected with the belt bin through a third post-sorting conveyor, and the relaxation sieve is also connected with the glass sorting machine; the belt bin I is connected with the post sorting conveyor IV; the glass sorting machine, the post-sorting conveyor five, the disc homogenizer, the post-sorting conveyor six and the winnowing machine are connected in sequence; a second magnetic separator is arranged on the sixth post-sorting conveyor; the winnowing machine is connected with the vortex separator; the vortex separator is connected with the outward transport conveyor; the winnowing machine is connected with the second belt bin through the eighth post-sorting conveyor; the second belt bin is connected with the fourth post-sorting conveyor; and the rear sorting conveyor IV is respectively connected with the packer and the outward conveying conveyor.
2. The household garbage sorting and drying system according to claim 1, wherein: the garbage drying system also comprises a drying conveyor II which is arranged on one side of the drying bin; the second drying conveyor is connected with the first drying conveyor.
3. The household garbage sorting and drying system according to claim 1, wherein: the garbage post-sorting system also comprises a combustible film winding machine, and the post-sorting packer is connected with the combustible film winding machine.
4. The household garbage sorting and drying system according to claim 1, wherein: the first front sorting conveyor, the second front sorting conveyor, the third front sorting conveyor, the fourth front sorting conveyor, the fifth front sorting conveyor, the sixth front sorting conveyor and the seventh front sorting conveyor are belt conveyors; the first post-sorting conveyor, the second post-sorting conveyor, the third post-sorting conveyor, the fourth post-sorting conveyor, the fifth post-sorting conveyor, the sixth post-sorting conveyor, the seventh post-sorting conveyor and the eighth post-sorting conveyor are all belt conveyors.
5. The household garbage sorting and drying system according to claim 2, wherein: the first drying conveyor is a stepping feeder, and the second drying conveyor is a belt conveyor.
6. The household garbage sorting and drying system according to claim 1, wherein: the garbage drying system is connected with an exhaust gas deodorizing device and a percolate treatment device.
7. The household garbage sorting and drying system according to claim 1, wherein: the pre-garbage sorting system also comprises an iron material conveyor and an iron material buffering bin, and the first magnetic separator is connected with the iron material buffering bin through the iron material conveyor.
8. The household garbage sorting and drying system according to claim 1, wherein: the garbage post-sorting system also comprises a nonferrous metal conveyor and a nonferrous metal buffering bin, wherein the second magnetic separator and the vortex separator are connected with the nonferrous metal buffering bin through the nonferrous metal conveyor.
9. The household garbage sorting and drying system according to claim 1, wherein: the post-garbage sorting system also comprises a glass buffering bin, and the glass sorting machine is connected with the glass buffering bin.
10. The household garbage sorting and drying system according to claim 1, wherein: the pre-garbage sorting system and the post-garbage sorting system are connected with a dust removing system.
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| CN110358603B (en) * | 2019-05-24 | 2020-09-29 | 中国联合工程有限公司 | Preparation system of solid recovered fuel and operation method thereof |
| CN111282951A (en) * | 2019-12-27 | 2020-06-16 | 庞强 | Landfill stale refuse treatment system and method |
| CN113546951A (en) * | 2021-07-13 | 2021-10-26 | 东方电气集团东方锅炉股份有限公司 | Landfill treatment and recycling method and system suitable for hydrogen energy development and utilization |
| CN113578934A (en) * | 2021-08-13 | 2021-11-02 | 中国天楹股份有限公司 | Dry garbage multi-stage recycling treatment method |
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