CN203936118U - A kind of resource reutilization system - Google Patents
A kind of resource reutilization system Download PDFInfo
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- CN203936118U CN203936118U CN201420334003.4U CN201420334003U CN203936118U CN 203936118 U CN203936118 U CN 203936118U CN 201420334003 U CN201420334003 U CN 201420334003U CN 203936118 U CN203936118 U CN 203936118U
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- biogas
- biogas slurry
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- 239000007789 gas Substances 0.000 claims abstract description 19
- 239000003345 natural gas Substances 0.000 claims abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 248
- 239000002002 slurry Substances 0.000 claims description 202
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 109
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 64
- 239000010813 municipal solid waste Substances 0.000 claims description 60
- 241000894006 Bacteria Species 0.000 claims description 55
- 238000003860 storage Methods 0.000 claims description 52
- 239000002918 waste heat Substances 0.000 claims description 44
- 238000004064 recycling Methods 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 35
- 239000002245 particle Substances 0.000 claims description 35
- 229910052742 iron Inorganic materials 0.000 claims description 32
- 238000001035 drying Methods 0.000 claims description 29
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 20
- 239000003546 flue gas Substances 0.000 claims description 20
- 238000000855 fermentation Methods 0.000 claims description 18
- 239000000446 fuel Substances 0.000 claims description 18
- 230000004151 fermentation Effects 0.000 claims description 16
- 239000010881 fly ash Substances 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 14
- 241001074903 Methanobacteria Species 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 238000000746 purification Methods 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 13
- 239000002893 slag Substances 0.000 claims description 12
- 239000010884 boiler slag Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 9
- 239000002956 ash Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 239000005416 organic matter Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000010248 power generation Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010409 ironing Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
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- 230000008023 solidification Effects 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 230000001988 toxicity Effects 0.000 claims description 3
- 231100000419 toxicity Toxicity 0.000 claims description 3
- 239000010802 sludge Substances 0.000 abstract description 31
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- 241000196324 Embryophyta Species 0.000 description 57
- 238000000034 method Methods 0.000 description 19
- 230000008901 benefit Effects 0.000 description 10
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- 238000009264 composting Methods 0.000 description 6
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- 229910052751 metal Inorganic materials 0.000 description 4
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- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
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- 235000017491 Bambusa tulda Nutrition 0.000 description 1
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- -1 alkaline salt potassium nitrate Chemical class 0.000 description 1
- 239000010868 animal carcass Substances 0.000 description 1
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- 239000003344 environmental pollutant Substances 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
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- 239000011368 organic material Substances 0.000 description 1
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- 231100000719 pollutant Toxicity 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of resource reutilization system, this system comprises separating plant, biogas plant, RDF power plant and landfill factory, and the minimizing of this system energy house refuse and municipal sludge, innoxious and resource degree is high; Low in resources consumption, the utility model energy substance used all comes from house refuse and municipal sludge, and the separating plant, biogas plant, power plant and the landfill factory that arrange can realize the mutual utilization of resource, energy confession, and can be gas distributing system and national grid provides bio-natural gas and electric energy.
Description
Technical Field
The utility model relates to a refuse treatment field, in particular to utilize resource recycling system of domestic waste and municipal sludge.
Background
Domestic waste and municipal sludge are inevitable products of urban life, and are produced all the time if the shadow is followed. The scientific treatment of domestic garbage and municipal sludge is a common problem at home and abroad. Domestic garbage and municipal sludge belong to high biological pollutants, and the chemical change of the domestic garbage and the municipal sludge brings persistent organic pollutants (pops) to the environment, so that the domestic garbage and the municipal sludge are important sources for generating germs and viruses. At present, the treatment methods of household garbage and municipal sludge which are widely used include a landfill method, an incineration method and a composting method.
The landfill method is a method for treating domestic garbage and municipal sludge commonly adopted in China, the landfill method is characterized in that garbage is filled into a prepared pit and covered and compacted to generate biological, physical and chemical changes, organic matters are decomposed, and the purposes of reduction and harmlessness are achieved.
The incineration method is a method of putting garbage in a high temperature furnace to sufficiently oxidize combustible components therein, and the generated heat is used for power generation, heating and the like. In most cases, however, the value of the electrical energy produced by these equipment is far below the expected sales, leaving local governments with huge economic losses. Meanwhile, since the domestic garbage and municipal sludge contain certain metals, the incineration has high toxicity and can generate secondary environmental hazard, the incineration treatment requires that the heat value of the garbage is more than 3.35MJ/kg, otherwise, a combustion improver must be added, and the operation cost is increased to a place which is hard to bear in a common city.
The composting treatment is to pile up the domestic garbage, store and ferment the domestic garbage after the temperature is kept to about 70 ℃, and decompose organic matters into inorganic nutrients by means of the capability of microbial decomposition in the garbage, but the domestic garbage has large compost amount and low nutrient content, and soil hardening and underground water quality deterioration are easily caused after long-term use, so the scale of the composting is not easy to be too large.
At present, there is a method for comprehensive utilization of domestic garbage, for example, chinese patent CN101433904B discloses a process for recycling energy of municipal domestic garbage and producing waste-free comprehensive utilization, which separates solid or liquid from garbage, sorts the solid garbage, then cracks, filters, reforms and synthesizes fuel oil from the sorted organic matter, in the process, the harmful gas generated cannot be effectively removed, only can be discharged into the atmosphere, and in addition, various catalysts, such as alkaline salt potassium nitrate or potassium carbonate, NiO-ZnO/Al, need to be used2O3Etc., which require additional provision to increase the treatment cost on the one hand, and may cause secondary pollution of the environment on the other hand; meanwhile, the energy used in the synthesis of fuel oil by the process needs to be additionally provided, so that a large amount of additional energy needs to be consumed, and the economic benefit is not considerable.
For another example, chinese patent CN 1020029281a discloses a household-based recycling system for municipal domestic waste, which needs to separately dispose the waste in each household, and this requirement is difficult for all residents to realize, so the system is difficult to operate and has poor industrial applicability.
Therefore, it is urgently needed to develop a comprehensive utilization system for household garbage and municipal sludge, which has low active classification requirements on residents, can realize self-sufficiency of energy, and has low environmental pollution while generating economic benefits.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present inventors have conducted intensive studies and, as a result, have found that: sorting domestic garbage and municipal sludge, sorting organic matters, combustible matters and metals in the domestic garbage and the municipal sludge, preparing methane by fermenting the organic matters, generating electricity by using the sorted combustible matters and methane slag generated by a methane plant as fuel of the power plant, placing fly ash and slag generated by the power plant into a landfill after innocent treatment, circulating seepage generated by the landfill to the methane plant for generating methane, inputting natural gas pipe network after filtering the methane generated by the methane plant, providing part of electric energy generated by the power plant for the sorting plant, the methane plant, the power plant and the landfill for use, and inputting the rest electric energy into a national power grid, thereby completing the utility model discloses a domestic garbage and municipal sludge separating device.
An object of the utility model is to provide following aspect:
in a first aspect, the present invention provides a resource recycling system, which is characterized in that the system comprises:
a sorting plant 1, a biogas plant 2, an RDF power plant 3 and a landfill plant 4, wherein,
the biogas plant 2 is provided with a biogas bin 21, a biogas slurry overflow tank 22, a biogas slurry storage tank 23, a biogas slurry pipeline system, a methane bacteria incubator 25, a biogas pipeline system and a geothermal system 27, wherein,
a biogas bin 21 which is a closed bin body, a spraying system liquid outlet 211 and a biogas gas outlet 212 which penetrate through the top wall of the biogas bin are arranged on the biogas bin, a fermentation tank 213 is arranged in the biogas bin, a biogas slurry overflow port 213a is arranged at the lower end of the tank wall of the fermentation tank 213, a biogas slurry overflow tank 22 is arranged along the tank wall at the outer side of the tank wall provided with the biogas slurry overflow port 213a, the biogas slurry overflow port 213a is arranged above the inlet of the biogas slurry overflow tank 22,
the drying device 214 is arranged outside the biogas bin 21, a dryer is arranged inside the drying device, the biogas residues fermented in the fermentation tank 213 are subjected to aerobic turning and drying treatment, and then are dried by the dryer to obtain dried biogas residues, and the dried biogas residues are conveyed to an incinerator of an RDF power plant to serve as fuel;
the side wall of the methane bacteria incubator 25 is provided with a methane liquid inlet 25a, the methane liquid in the methane liquid storage tank 23 flows into the methane bacteria incubator 25 through the methane liquid inlet 25a, and the methane bacteria incubator 25 is provided with a methane liquid outlet 25b and a methane liquid outlet 25c which penetrate through the top of the incubator;
the biogas slurry pipeline system comprises a first biogas slurry conveying pipeline 24a, a second biogas slurry conveying pipeline 24b and a third biogas slurry conveying pipeline 24c, wherein,
the first biogas slurry conveying pipeline 24a comprises a biogas slurry conveying pipeline, one end of the first biogas slurry conveying pipeline is communicated with the biogas slurry overflow tank, the other end of the first biogas slurry conveying pipeline is communicated with a biogas slurry inlet 23a of the biogas slurry storage tank,
the second biogas slurry conveying pipeline 24b comprises a second biogas slurry conveying pump and a biogas slurry conveying pipeline communicated with the second biogas slurry conveying pump, wherein the biogas slurry conveying pipeline communicated with the inlet of the second biogas slurry conveying pump is communicated with a biogas slurry outlet 23b of the biogas slurry storage tank, the biogas slurry conveying pipeline communicated with the outlet of the second biogas slurry conveying pump is communicated with a biogas slurry inlet 25a of the methanobacteria incubator, so that biogas slurry is input into the methanobacteria incubator from the biogas slurry storage tank 23,
a third biogas slurry conveying pipeline 24c, which comprises a third biogas slurry conveying pump and a biogas slurry conveying pipeline communicated with the third biogas slurry conveying pump, wherein the biogas slurry conveying pipeline communicated with the inlet of the third biogas slurry conveying pump passes through a biogas slurry outlet 25b of the methanobacteria incubator and is introduced into the methanobacteria incubator, a pipe orifice of the biogas slurry conveying pipeline is arranged below the liquid level of biogas slurry in the methanobacteria incubator, the biogas slurry conveying pipeline communicated with the outlet of the third biogas slurry conveying pipeline is communicated with a spraying system liquid outlet 211 arranged at the top end of the biogas bin 21,
the methane pipeline system comprises a methane pump 261, a gas collection cabinet 262, a methane purification device 263 and a methane pipeline 264, wherein,
the biogas pipeline 264 comprises a main pipeline and two branch pipelines arranged thereon, wherein the first branch pipeline is communicated with the biogas outlet 212 of the biogas bin 21, the second branch pipeline is communicated with the biogas outlet 25c of the methane bacteria incubator, and a biogas pump 261, a gas collection cabinet 262 and a biogas purification device 263 are sequentially arranged on the main pipeline, wherein the biogas purification device 263 is communicated with a natural gas pipe network,
the geothermal system 27 comprises a geothermal water inlet pipeline, a geothermal water outlet pipeline, a heat exchanger 28, a circulating pump and a water inlet valve, the geothermal system is arranged below the methane bin 21 and the methane bacteria incubator 25,
the heat exchanger 28 is arranged between the geothermal system 27 and the waste heat circulating water pipeline 34 of the RDF power plant, so that low-temperature geothermal circulating water in the geothermal water outlet pipe is heated to become high-temperature geothermal circulating water to enter the geothermal water inlet pipeline, and meanwhile, waste heat circulating water in the waste heat circulating water pipeline in the RDF power plant is cooled, so that the waste heat circulating water continues to cool an incinerator in the RDF power plant;
the RDF power plant 3 comprises a fuel stack 31, an RDF incinerator 32, a high-temperature flue gas discharge device 33, a waste heat circulating water pipeline 34 and a steam pipeline 35, wherein,
a fuel stacking part 31, in which a combustible stacking part, a biogas residue stacking part and a material mixing area are arranged, wherein the combustible is obtained from a sorting plant, the biogas residue is dried biogas residue processed by a drying device,
the RDF incinerator 32 is provided with a high-temperature flue gas discharge device 33, a waste heat circulating water pipeline 34 water inlet, a steam pipeline 35 steam inlet, a fly ash and ash residue treatment device 37,
the high-temperature flue gas discharge device 33 comprises a chimney and a smoke exhaust pipeline communicated with the chimney, the smoke exhaust pipeline is communicated with the drying device 214, high-temperature flue gas enters a dryer of the drying device through the smoke exhaust pipeline, and fresh and wet biogas residues in the drying device are dried by high-temperature heat energy of the high-temperature flue gas;
a waste heat circulating water pipeline 34 which is a closed circulating water loop and is provided with a circulating pump, circulating water in the waste heat circulating water pipeline circularly flows between the heat exchanger 28 and an incinerator of the RDF power plant, high-temperature waste heat circulating water in the waste heat circulating water pipeline is used as a heat source of the heat exchanger 28, low-temperature waste heat circulating water generated after heat exchange flows back to the incinerator, the incinerator is cooled, and high-temperature waste heat circulating water is formed again;
one end of the steam pipeline 35 is communicated with the RDF incinerator, the other end of the steam pipeline is communicated with the turbo generator unit 36, and high-temperature steam generated by the RDF incinerator is input into the turbo generator unit 36 through the steam pipeline 35 to serve as a power source for power generation.
In a second aspect, the present invention also provides the above-mentioned resource recycling system, characterized in that the sorting plant 1, in which the crusher 11, the drum screen 12, the first iron remover 13a, the second iron remover 13b, the manual sorting device 14, and the fine crusher 15 are sequentially disposed, wherein,
the crusher 11 is connected with the inlet 12a of the roller screening machine through a conveyor belt, and the maximum particle size of particles treated by the crusher is 70 mm;
the roller screening machine 12 comprises a roller screen and an undersize conveyor belt which are horizontally arranged, wherein screen holes with the aperture of 60-80 mm are distributed on the roller screen, garbage particles obtained by crushing through the crusher enter the roller screen, the roller screen rotates, the garbage particles are driven to roll in the roller screen through the rotation of the roller screen, the garbage particles are fully contacted with the screen, and therefore the garbage particles with the particle size larger than the screen holes are reserved in the roller screen to obtain oversize products, and the oversize products are conveyed to a first iron remover through the conveyor belt to be subjected to iron removal and then are manually sorted; the garbage particles with the particle size smaller than the sieve pores fall into a conveying belt below the drum sieve to obtain undersize products, and the undersize products are conveyed to a second iron remover for iron removal and then conveyed to a biogas plant;
a first iron remover 13a arranged above the conveyor belt between the roller screening machine and the manual sorting device 14;
a second iron remover 13b disposed above the conveyor belt between the drum screen and the organic matter stacking place 51,
a manual sorting device 14 which is arranged between the first iron remover 13a and the fine crusher 15 and is connected with the fine crusher 15 through a conveyor belt,
and a fine crusher 15 disposed behind the manual sorting device, wherein the maximum particle size of the particles treated by the fine crusher is 30-50 mm.
In a third aspect, the present invention further provides the above resource recycling system, which is characterized in that the biogas slurry storage tank 23 in the biogas plant 2 is arranged outside the bin wall of the biogas bin 21, a biogas slurry inlet 23a is arranged on the upper portion of the side wall of the biogas slurry storage tank 23, and biogas slurry in the biogas slurry overflow tank enters the biogas slurry storage tank through the biogas slurry inlet 23 a; the upper part of the other side wall of the biogas slurry storage pool 23 is communicated with a seepage return pipeline in the landfill 4, and seepage generated in a landfill pit in the landfill 4 enters the biogas slurry storage pool through a seepage inlet 23 c; a biogas slurry outlet 23b is formed in the lower portion of the side wall of the biogas slurry storage tank 23, and biogas slurry in the biogas slurry storage tank is discharged out of the biogas slurry storage tank 23 through the biogas slurry outlet 23b and enters the methane bacteria incubator 25.
In a fourth aspect, the present invention further provides a system for recycling resources, wherein the biogas slurry pipeline system in the biogas plant 2 makes the biogas storage tank 21, the biogas slurry overflow tank 22, the biogas slurry storage tank 23 and the methane bacteria incubator 25 form a closed passage, and the biogas slurry continuously circulates between the biogas storage tank 21 and the methane bacteria incubator 25 through the closed passage.
In a fifth aspect, the present invention further provides a system for recycling resources, which is characterized in that, in the biogas pipeline system of the biogas plant, the gas collection cabinet is provided with a biogas inlet and a biogas outlet for collecting and storing biogas from the biogas bin and the methane bacteria incubator.
In a sixth aspect, the present invention further provides the above system for recycling resources, wherein the geothermal water inlet pipeline and the geothermal water outlet pipeline in the biogas plant form a closed loop, and a circulation pump is provided therebetween, so that the geothermal circulating water flows in the geothermal system 27 in a circulating manner, and when the geothermal circulating water in the system is insufficient, the water inlet valve is opened to supply geothermal circulating water to the geothermal system.
In a seventh aspect, the present invention further provides the resource recycling system, wherein the fuel stacking portion is connected to the RDF incinerator 32 through a conveyor belt therebetween, and is used for stacking and mixing the combustible material separated from the separation plant and the dried biogas residue obtained from the biogas plant, and the combustible material and the dried biogas residue are mixed in a weight ratio of 4:3 to obtain a mixed fuel.
In an eighth aspect, the present invention further provides the above resource recycling system, wherein the steam turbine generator unit 36 in the RDF power plant is connected to the national grid, the separation plant 1, the biogas plant 2, the RDF power plant 3 and the landfill plant 4, and a part of the electric energy generated by the steam turbine generator unit is input to the national grid and another part of the electric energy is input to the separation plant 1, the biogas plant 2, the RDF power plant 3 and the landfill plant 4 to provide electric power for the steam turbine generator unit.
In a ninth aspect, the present invention further provides the above resource recycling system, wherein in the RDF power plant, the fly ash and ash treatment device 37 comprises a boiler slag treatment device and a bag-type dust collector, wherein the boiler slag treatment device is disposed inside the RDF incinerator 32 and is used for collecting the slag generated by the RDF incinerator; the bag-type dust collector is communicated with the top end of the RDF incinerator 32 through a pipeline and is used for collecting fly ash generated by the RDF incinerator 32, slag obtained by the boiler slag treatment device and fly ash obtained by the bag-type dust collector are collected in a centralized mode, stable solidification is carried out, and when the toxicity of the slag reaches the standard, the slag is conveyed to the incineration waste stacking area 41.
In the tenth aspect, the present invention also provides the above-mentioned resource recycling system, wherein the landfill 4 comprises an incineration disposal stacking area 41, a landfill pit 42 and a leachate recirculation line 43, wherein,
the bottom of the landfill pit 42 is provided with a seepage return pipe 43, and the seepage return pipe 43 is communicated with the seepage inlet 23c of the biogas slurry storage pool.
The utility model discloses in the RDF power plant means, utilizes the power plant of refuse derived fuel as the power supply.
According to the utility model provides a resource recycling system has following beneficial effect:
(1) the reduction, the harmlessness and the recycling degree of the household garbage and the municipal sludge are high;
(2) the resource consumption is low, the energy materials used by the utility model are all from domestic garbage and municipal sludge, and the arranged sorting plant, the biogas plant, the power plant and the landfill plant can realize the mutual utilization of resources, can supply energy by themselves, and can provide biogas and electric energy for a natural gas pipeline network and a national power grid;
(3) because domestic waste and municipal sludge can be continuously generated, the resource recycling system provided by the utility model can continuously operate, has low cost and considerable economic and environmental benefits, and can realize commercial operation;
(4) the utility model provides a resource recycling system, in case establish, can use for a long time or even forever, has industrial practicality.
Drawings
FIG. 1 shows a process flow diagram of a resource recycling system;
FIG. 2 shows a sort plant process flow diagram;
FIG. 3 shows a process flow diagram of a biogas plant;
FIG. 4 illustrates an RDF power plant process flow diagram;
FIG. 5 shows a landfill process flow diagram;
FIG. 6 is a graph showing a comparison of the reduction rate, the harmless rate and the resource rate of a resource recycling system with landfill, incineration and composting;
FIG. 7 shows a resource consumption cost and floor space comparison graph of a resource recycling system versus landfill, incineration and composting;
fig. 8 shows a comparison of the resource recycling system with the return on investment (year) for landfill, incineration and composting.
Description of the reference numerals
1-sorting plant
11-crusher
12-roller screening machine
13 a-first iron remover
13 b-second iron remover
14-Manual sorting device
15-fine crusher
2-biogas plant
21-biogas bin
211-spraying system liquid outlet
212-biogas outlet
213-fermentation tank
213 a-biogas slurry overflow port
214-drying device
22-biogas slurry overflow tank
23-biogas slurry storage pool
23 a-biogas slurry inlet of biogas slurry storage tank
23 b-biogas slurry outlet of biogas slurry storage tank
23 c-seepage inlet
24 a-first biogas slurry conveying pipeline
24 b-second biogas slurry conveying pipeline
24 c-third biogas slurry conveying pipeline
25-methane bacteria incubator
Biogas slurry inlet of 25 a-methanobacteria incubator
Biogas slurry outlet of 25 b-methanobacteria incubator
Biogas outlet of 25 c-methane bacteria incubator
261-biogas pump
262-gas collecting cabinet
263-biogas purification device
264-biogas pipeline
27-geothermal system
28-heat exchanger
3-RDF power plant
31-fuel piling up place
32-RDF incinerator
33-high temperature flue gas discharging equipment
34-waste heat circulating water pipeline
35-steam line
36-steam turbine generator unit
37-flying ash and ash processing device
4-landfill
41-incineration waste stacking area
42-landfill pit
43-seepage backflow pipeline
51-organic matter piling place
Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
Household garbage refers to solid waste generated in daily life or activities for providing services to daily life and solid waste regarded as household garbage according to laws and administrative rules, and can be generally classified into four categories: the garbage, kitchen garbage, harmful garbage and other garbage can be recovered.
The municipal sludge refers to a muddy substance which is formed in the water treatment process and takes organic matters as main components, and is mainly from sludge of sewage plants, pipe network sludge, river and lake sludge, industrial sludge and the like. The organic matter content is high, the particles are fine, the density is low, and the ordering and smelling are easy.
Domestic garbage and municipal sludge contain a large amount of recyclable resources, such as metals, organic matters and the like, and the resources are usually treated along with the garbage, so that not only is a large amount of waste of resources caused, but also a large amount of space is occupied, and environmental pollution is caused.
The inventor finds that metal and organic matters are separated from household garbage and municipal sludge through a separation plant, the organic matters are sent to a biogas plant for fermentation, and energy source gas, namely biogas, can be generated and is purified into biogas which is sent to a municipal gas pipe network; the separated combustible materials and the dried biogas residues discharged by the biogas plant can be used as fuels of an RDF power plant, one part of electric energy generated by the RDF power plant is used for sorting plants, the biogas plant or the RDF power plant, the rest part of the electric energy is input into a national power grid, meanwhile, high-temperature flue gas generated by the RDF power plant can be used for drying the biogas residues by the biogas plant, and waste heat circulating water is used as a heat source of a methane bacteria incubator and a biogas bin of the biogas plant, so that the full utilization of resources and the harmless treatment of garbage are realized.
The utility model discloses a can make full use of in the rubbish resource, changing waste into valuables to can provide the urban domestic waste comprehensive utilization system of biogas and electric energy for the city.
In a preferred embodiment according to the present invention, as shown in fig. 1, there is provided a municipal solid waste comprehensive utilization system comprising:
the sorting plant 1, as shown in fig. 2, is provided with a crusher 11, a drum screen 12, a first iron remover 13a, a second iron remover 13b, a manual sorting device 14 and a fine crusher 15 in sequence, sorts fermentable matter, combustible matter and inorganic matter in domestic garbage and municipal sludge, and puts them into various subsequent links, wherein,
crusher 11, the utility model discloses do not specially limit to the breaker, can adopt arbitrary breaker in the field to make domestic waste and municipal sludge can be broken for the granule that maximum particle diameter is 70mm be preferred, like the breaker of the TS61 model that Zhongshan sreid environmental protection equipment science and technology limited company produced, its upper end is trapezoidal feed hopper, domestic waste and municipal sludge pass through feed hopper and get into the breaker, through rolling broken back, form the rubbish granule, the rubbish granule passes through inside the drum screen that the conveyer belt got into the drum screen separator.
The roller screening machine 12 comprises a roller screen and an undersize conveyor belt which are horizontally arranged, wherein screen holes with the aperture of 60-80 mm are distributed on the roller screen, garbage particles obtained by crushing through the crusher enter the roller screen, the roller screen rotates, the garbage particles are driven to roll in the roller screen through the rotation of the roller screen, the garbage particles are fully contacted with the screen, and therefore the garbage particles with the particle size larger than the screen holes are reserved in the roller screen to obtain oversize products, and the oversize products are conveyed to a first iron remover through the conveyor belt to be subjected to iron removal and then are manually sorted; and the garbage particles with the particle size smaller than the sieve pores fall into the conveying belt below the drum sieve to obtain undersize products, the undersize products are conveyed to a second iron remover for iron removal and then conveyed to a biogas plant,
wherein,
the oversize is mainly dry combustible materials which are combustible organic materials such as plastics, wood and bamboo, paper scraps, rubber and the like,
the undersize material mainly comprises fresh and wet organic matters which can be subjected to anaerobic fermentation, such as kitchen waste, vegetables, fruits, animal carcasses and the like,
the first iron remover 13a, which is not particularly limited by the present invention, may be an electromagnet or a permanent magnet, preferably, to separate iron-containing materials from the garbage particles, is disposed above the conveyor belt between the drum screening machine and the manual sorting device 14, for separating iron-containing materials from the oversize,
a second iron remover 13b disposed above the conveyor belt between the drum screen and the organic matter stacking portion 51 for separating iron-containing materials from undersize,
a manual sorting device 14 which is arranged between the iron remover 13 and the fine crusher 15, is connected with the fine crusher 15 through a conveyor belt and is used for manually sorting the garbage particles treated by the iron remover,
fine crusher 15, set up after manual separation device, the utility model discloses do not specially limit to fine crusher, can adopt the arbitrary fine crusher in this field, so that the oversize thing that the messenger handled through the de-ironing separator can be broken into the granule that the particle diameter is 30 ~ 50mm and be preferred, like the breaker of TS61 model that Zhongshan sreid environmental protection equipment science and technology limited company produced, its upper end is trapezoidal feed hopper, the rubbish granule that handles through first de-ironing separator gets into the breaker through feed hopper, after rolling and crushing, it is 30 ~ 50mm combustible to form the particle diameter, the combustible that obtains is transported to the RDF power plant through the conveyer belt;
the biogas plant 2, as shown in fig. 3, is provided with a biogas bin 21, a biogas slurry overflow tank 22, a biogas slurry storage tank 23, a biogas slurry pipeline system, a methane bacteria incubator 25, a biogas pipeline system and a geothermal system 27, wherein,
a biogas bin 21 which is a closed system, a liquid outlet 211 penetrating through a spraying system of the top wall and a biogas outlet 212 penetrating through the top wall are arranged above the biogas bin, a biogas fermentation tank 213 is arranged inside the biogas bin, a biogas slurry overflow port 213a is arranged at the lower end of the tank wall of the fermentation tank 213, a biogas slurry overflow tank 22 is arranged along the tank wall at the outer side of the tank wall provided with the biogas slurry overflow port, the biogas slurry overflow tank can be arranged at the underground part, the semi-underground part or the overground part at the outer side of the fermentation tank, in a preferred embodiment of the invention, the biogas slurry overflow tank can be arranged at the underground part at the outer side of the fermentation tank, the biogas slurry overflow port 213a is arranged above the inlet of the biogas slurry overflow tank 22, so that the biogas slurry overflowing from the fermentation tank 213 can directly,
the drying device 214 is arranged outside the biogas bin 21, a dryer is arranged in the drying device and used for drying the fermented biogas residues, a high-temperature heat source for drying is high-temperature flue gas discharged from an RDF power plant, the high-temperature flue gas is introduced into the drying device 214 through a discharge device 33 in the RDF power plant, the fermented biogas residues in the fermentation tank 213 are subjected to aerobic turning and drying treatment and then are dried by the high-temperature flue gas to obtain dried biogas residues, the dried biogas residues are conveyed to an incinerator of the RDF power plant to serve as fuel, and waste gas after the drying treatment of the biogas residues is discharged out of the drying device through an exhaust port formed in the side wall of the drying device and finally discharged to a chimney of the RDF power plant;
a biogas slurry storage tank 23 which is arranged on the outer side of the wall of the biogas bin 21, wherein a biogas slurry inlet 23a is arranged at the upper part of the side wall of the biogas slurry storage tank 23, and biogas slurry in the biogas slurry overflow tank enters the biogas slurry storage tank through the biogas slurry inlet 23 a; the upper part of the other side wall of the biogas slurry storage pool 23 is communicated with a seepage return pipeline in the landfill 4, and seepage generated in a landfill pit in the landfill 4 enters the biogas slurry storage pool through a seepage inlet 23 c; a biogas slurry outlet 23b is formed in the lower portion of the side wall of the biogas slurry storage tank 23, and biogas slurry in the biogas slurry storage tank is discharged out of the biogas slurry storage tank 23 through the biogas slurry outlet 23b and enters the methane bacteria incubator 25.
The methane bacteria incubator 25 is provided with an inlet 25a at the side, the methane liquid in the methane liquid storage tank 23 is introduced into the methane bacteria incubator 25, and the top end of the methane bacteria incubator 25 is provided with a methane liquid outlet 25b and a methane gas outlet 25c, wherein the methane liquid outlet 25b is used for enabling the methane liquid carrying methane bacteria in the methane bacteria incubator to enter the methane gas bin 21; the methane outlet 25c is used for discharging methane gas generated in the methane bacteria incubator into a methane pipeline system, the methane bacteria incubator 25 is used for providing breeding environments such as proper temperature, humidity and nutrient sources for breeding methane bacteria, and meanwhile, methane bacteria can generate methane by utilizing biogas slurry in the methane bacteria incubator.
The position of the inlet 25a of the methane bacteria incubator is not particularly limited, and the methane bacteria incubator can be arranged below the liquid level of the methane liquid in the methane bacteria incubator or above the liquid level of the methane liquid in the methane bacteria incubator,
the biogas slurry pipeline system comprises a first biogas slurry conveying pipeline 24a, a second biogas slurry conveying pipeline 24b and a third biogas slurry conveying pipeline 24c, wherein
The first biogas slurry conveying pipeline system 24a comprises a biogas slurry conveying pipeline, one end of the first biogas slurry conveying pipeline is communicated with the biogas slurry overflow tank, the other end of the first biogas slurry conveying pipeline is communicated with the inlet 23a of the biogas slurry storage tank,
the second biogas slurry conveying pipeline system 24b comprises a second biogas slurry conveying pump and a biogas slurry conveying pipeline communicated with the second biogas slurry conveying pump, wherein the biogas slurry conveying pipeline communicated with the inlet of the second biogas slurry conveying pump is communicated with the outlet 23b of the biogas slurry storage tank, the biogas slurry conveying pipeline communicated with the outlet of the second biogas slurry conveying pump is communicated with the inlet 25a of the methane bacteria incubator, so that biogas slurry is conveyed into the methane bacteria incubator from the biogas slurry storage tank 23,
the third biogas slurry conveying pipeline system 24c comprises a third biogas slurry conveying pump and a biogas slurry conveying pipeline communicated with the third biogas slurry conveying pump, wherein the biogas slurry conveying pipeline communicated with the inlet of the third biogas slurry conveying pump passes through the outlet 25b of the methanobacteria incubator and is introduced into the methanobacteria incubator, the pipe orifice of the biogas slurry conveying pipeline is arranged below the liquid level of biogas in the methanobacteria incubator, the biogas slurry conveying pipeline communicated with the outlet of the third biogas slurry conveying pump is communicated with the liquid outlet 211 of the spraying system arranged at the top end of the biogas bin 21,
the biogas slurry pipeline system enables the biogas bin 21, the biogas slurry overflow tank 22, the biogas slurry storage tank 23 and the methane bacteria incubator 25 to form a closed passage, and biogas slurry continuously circulates between the biogas bin 21 and the methane bacteria incubator 25 through the closed passage, so that on one hand, a nutrient source is continuously provided for the propagation of methane bacteria, and on the other hand, the methane bacteria are continuously conveyed into the biogas bin 21, and organic matters in the biogas bin 21 are fermented by taking the methane bacteria as fermentation strains to generate biogas.
The methane pipeline system comprises a methane pump 261, a gas collection cabinet 262, a methane purification device 263 and a methane pipeline 264, wherein,
the biogas pipeline 264 comprises a main pipeline and two branch pipelines arranged thereon, wherein the first branch pipeline is communicated with the biogas outlet 212 of the biogas bin 21, the second branch pipeline is communicated with the biogas outlet 25c of the methane bacteria incubator, and a biogas pump 261, a gas collection cabinet 262 and a biogas purification device 263 are sequentially arranged on the main pipeline, wherein the biogas purification device 263 is communicated with a natural gas pipe network, so that biogas generated by the biogas bin 21 and biogas generated by the methane bacteria incubator 25 are merged in the main pipeline and then purified into biogas which enters the natural gas pipe network,
wherein,
gas collecting tank 262, for withstand voltage corrosion resistant closed container, set up marsh gas air inlet and marsh gas outlet on it for collect and store the marsh gas that comes from marsh gas storehouse and methane-generating fungus incubator, play the effect of buffering, can be marsh gas purification device and natural gas pipe net steady air feed continuously, avoid because marsh gas produces the unstable atmospheric pressure that leads to the fact of speed to cause damage or cause danger to marsh gas purification device and natural gas pipe net, the utility model discloses do not specially limit to the shape of gas collecting tank, can be for cylinder, spheroid or other arbitrary shapes.
The utility model discloses used marsh gas purification device is arbitrary usable marsh gas purification device among the prior art, and the model that has the company to produce like Hunan and way resource science and technology is 300Nm3/h desulfurization, purification device for HNDH-300's specification.
The geothermal system 27 comprises a geothermal water inlet pipeline, a geothermal water outlet pipeline, a heat exchanger 28, a circulating pump and a water inlet valve, the geothermal system is arranged below the methane bin 21 and the methane bacteria incubator 25, wherein,
the geothermal water inlet pipeline and the geothermal water outlet pipeline form a closed loop, a snake-shaped arrangement is formed below the methane bin 21 and the methane bacteria incubator 25, or a circulating pump is arranged between the two pipelines, geothermal circulating water circularly flows in the geothermal system 27, and when the geothermal circulating water in the system is insufficient, a water inlet valve is opened to supplement the geothermal circulating water to the geothermal system.
The heat exchanger 28, which is not particularly limited by the present invention, may be any available heat exchanger known in the art, preferably a surface heat exchanger or a fluid-coupled indirect heat exchanger, such as a plate heat exchanger and a tube heat exchanger.
The heat exchanger 28 is disposed between the geothermal system 27 and the waste heat circulating water pipeline 34 of the RDF power plant, and is used for exchanging heat between geothermal circulating water in the geothermal system 27 and waste heat circulating water of the RDF power plant, so that low-temperature geothermal circulating water in the geothermal water outlet pipe is heated to become high-temperature geothermal circulating water, and the high-temperature geothermal circulating water enters the geothermal water inlet pipeline, and simultaneously, the waste heat circulating water in the waste heat circulating water pipeline of the RDF power plant is cooled, so that the waste heat circulating water continues to cool the incinerator in the RDF power.
The heat of the high-temperature geothermal circulating water is released in the methane bacteria incubator and the methane bin, and is used for preserving the heat of the fermentation tank 213 and the methane bacteria incubator 25, so that the fermentation product is fermented under the appropriate temperature condition, methane bacteria are propagated under the appropriate temperature condition, and the high-temperature geothermal circulating water becomes low-temperature geothermal circulating water after releasing heat and enters a geothermal water outlet pipeline.
And the low-temperature geothermal circulating water flows into the heat exchanger 28 and exchanges heat with waste heat circulating water of the RDF power plant again to form high-temperature geothermal circulating water, the high-temperature geothermal circulating water enters a geothermal water inlet pipeline, and when the low-temperature geothermal circulating water is insufficient, a water inlet valve is opened to supplement the low-temperature geothermal circulating water.
The RDF power plant 3, as shown in fig. 4, includes a fuel dump 31, an RDF incinerator 32, a high temperature flue gas exhaust 33, a waste heat circulating water pipeline 34, and a steam pipeline 35, wherein,
a fuel stacking part 31, in which a combustible stacking part, a biogas residue stacking part and a mixing area are arranged, wherein the combustible is obtained from a sorting plant, the biogas residue is dried biogas residue processed by a drying device, the fuel stacking part is connected with an RDF incinerator 32 through a conveyor belt between the fuel stacking part and the RDF incinerator and is used for stacking and mixing the combustible obtained from the sorting plant and the dried biogas residue obtained from the biogas plant, the combustible, the dried biogas residue and the dried biogas residue are mixed according to the weight ratio of 4:3 to obtain mixed fuel,
the RDF incinerator 32 is provided with a high-temperature flue gas discharge device 33, a waste heat circulating water pipeline 34 water inlet, a steam pipeline 35 steam inlet, a fly ash and ash residue treatment device 37 and a turbo generator unit 36, wherein,
the high-temperature flue gas discharging device 33 comprises a chimney and a smoke exhaust pipeline communicated with the chimney, the smoke exhaust pipeline is communicated with the drying device 214, high-temperature flue gas enters a dryer of the drying device through the smoke exhaust pipeline, and fresh and wet biogas residues in the drying device are dried by using high-temperature heat energy of the high-temperature flue gas.
And a waste heat circulating water pipeline 34 which is a closed circulating water loop and is provided with a circulating pump, circulating water in the waste heat circulating water pipeline circularly flows between the heat exchanger 28 and the incinerator of the RDF power plant, high-temperature waste heat circulating water in the waste heat circulating water pipeline is used as a heat source of the heat exchanger 28, low-temperature waste heat circulating water generated after heat exchange flows back to the incinerator, the incinerator is cooled, and high-temperature waste heat circulating water is formed again.
The waste heat circulating water pipeline 34 of the RDF power plant realizes the self-supply and the reutilization of energy through the heat exchanger 28 and the geothermal system 27 of the methane factory, because the RDF power plant incinerator needs low-temperature water to cool the incinerator, under the normal condition, the heat of the high-temperature waste heat circulating water generated after the incinerator is cooled is not utilized, and is only simply released into the atmosphere, thereby not only wasting energy, but also improving the temperature of the atmosphere and causing adverse effects on the atmospheric environment, and in the methane factory, the heat preservation of the methane bin and the methane bacteria incubator needs to additionally provide energy, the utility model skillfully transfers the heat of the high-temperature circulating water generated in the incinerator to the methane bin and the methane bacteria incubator of the methane factory through the heat exchanger, on one hand, the adverse effects on the atmosphere caused by the heat dissipation of the high-temperature waste heat circulating water are avoided, on the other hand, the heat preservation of the methane bin and the methane bacteria incubator does not need to additionally provide energy, realizing the comprehensive utilization of energy.
One end of the steam pipeline 35 is communicated with the RDF incinerator, the other end is communicated with the turbo generator unit 36, high-temperature steam generated by the RDF incinerator is input into the turbo generator unit 36 through the steam pipeline 35 to be used as a power source for power generation,
and the steam turbine generator unit 36 is connected with the national power grid, the sorting plant 1, the biogas plant 2, the RDF power plant and the landfill plant 4, and part of electric energy generated by the steam turbine generator unit is input into the national power grid, and the other part of electric energy is input into the sorting plant 1, the biogas plant 2, the RDF power plant 3 and the landfill plant 4 to provide electric power for the sorting plant, the biogas plant 2, the RDF power plant 3 and the landfill plant 4.
The fly ash and ash treatment device 37 comprises a boiler slag treatment device and a bag-type dust collector, wherein the boiler slag treatment device is arranged inside the RDF incinerator 32 and is used for collecting slag generated by the RDF incinerator; the bag-type dust collector is communicated with the top end of the RDF incinerator 32 through a pipeline and is used for collecting fly ash generated by the RDF incinerator 32, slag obtained by the boiler slag treatment device and fly ash obtained by the bag-type dust collector are collected in a centralized mode, stable solidification is carried out, and when the toxicity of the slag reaches the standard, the slag is conveyed to the incineration waste stacking area 41.
The landfill 4, as shown in fig. 5, includes an incineration waste stacking area 41, a landfill pit 42, and a leachate return pipe 43, wherein,
the incineration waste stacking area 41 is used for stacking incineration waste which can not be timely conveyed to the landfill pit 42, the position of the incineration waste stacking area is not particularly limited by the utility model, and the incineration waste stacking area can be arranged around the landfill pit 42 or the RDF incinerator 32,
a landfill pit 42, the bottom of which is provided with a seepage liquid return pipeline 43, a filter screen can be arranged between the bottom of the landfill pit 42 and the seepage liquid return pipeline 43 to prevent landfill objects from falling into the seepage liquid return pipeline to cause blockage, when the landfill objects fill the landfill pit 42, the upper surface of the landfill pit can be compacted by a compactor,
the seepage backflow pipeline 43 is communicated with the seepage inlet 23c of the biogas slurry storage pool, so that seepage generated in the landfill pit 42 flows into the seepage inlet 23c of the biogas slurry storage pool, on one hand, biogas slurry can be increased, the biogas yield is improved, and on the other hand, pollution of the seepage to soil around the landfill pit 42 can be reduced.
The utility model provides an above-mentioned resource system of recycling can realize the self-supplying self-sufficiency of the energy to can provide electric energy and biogas for national grid and natural gas pipe network, realize the comprehensive utilization of the energy, and produce economic benefits.
Taking a city with 20 ten thousand population as an example, the resource recycling system provided by the utility model has significant advantages in the aspects of reduction, harmless degree and resource effect, as shown in fig. 6 (1-reduction, 2-harmless, 3-resource, a-landfill, B-incineration, C-compost, D-the utility model): the utility model provides a resource recycling system's rubbish decrement rate reaches 85%, and innoxious rate reaches 95%, and the resourceization reaches 680kwh/t, compares other single refuse treatment modes, and this system can reach higher decrement, innoxious degree and resourceization effect;
in terms of resource consumption, as shown in fig. 7 (1-resource consumption cost (yuan/ton), 2-area (mu)), a-landfill, B-incineration, C-compost, D-the utility model discloses), the resource recycling system provided by the utility model has a land occupation area reduced by 77.5% compared with the landfill mode, and meanwhile, the mode does not need combustion-supporting fuel, does not need percolate treatment facility, so the resource consumption cost is very low;
in the aspect of the investment recovery period (year), namely, the aspect of economic operation benefit, as shown in fig. 8 (a-landfill, B-incineration, C-compost, D-the utility model discloses), the utility model provides a resource recycling system investment recovery period is only 1/2 ~ 1/6 of other modes, has considerable economic benefit.
According to the utility model provides a resource recycling system has following advantage:
(1) the reduction, the harmlessness and the recycling degree of the household garbage and the municipal sludge are high;
(2) the resource consumption is low, the energy materials used by the utility model are all from domestic garbage and municipal sludge, and the arranged sorting plant, the biogas plant, the power plant and the landfill plant can realize the mutual utilization of resources, can supply energy by themselves, and can provide biogas and electric energy for a natural gas pipeline network and a national power grid;
(3) because domestic waste and municipal sludge can be continuously generated, the resource recycling system provided by the utility model can continuously operate, has low cost and considerable economic and environmental benefits, and can realize commercial operation;
(4) the utility model provides a resource recycling system, in case establish, can use for a long time or even forever, has industrial practicality.
The present invention has been described in detail with reference to the specific embodiments and the exemplary embodiments, but the description should not be construed as limiting the present invention. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and embodiments thereof without departing from the spirit and scope of the present invention, and all fall within the scope of the present invention. The protection scope of the present invention is subject to the appended claims.
Claims (10)
1. A resource reuse system, comprising:
a sorting plant (1), a biogas plant (2), an RDF power plant (3) and a landfill plant (4), wherein,
a biogas plant (2) which is provided with a biogas bin (21), a biogas slurry overflow tank (22), a biogas slurry storage tank (23), a biogas slurry pipeline system, a methane bacteria incubator (25), a biogas pipeline system and a geothermal system (27), wherein,
a biogas bin (21) which is a closed bin body, a spraying system liquid outlet (211) and a biogas outlet (212) penetrating through the top wall of the biogas bin are arranged on the biogas bin, a fermentation tank (213) is arranged in the biogas bin, a biogas slurry overflow port (213a) is arranged at the lower end of the tank wall of the fermentation tank (213), a biogas slurry overflow tank (22) is arranged along the tank wall at the outer side of the tank wall provided with the biogas slurry overflow port (213a), the biogas slurry overflow port (213a) is arranged above the inlet of the biogas slurry overflow tank (22),
the drying device (214) is arranged outside the biogas bin (21), a dryer is arranged inside the drying device, the biogas residue fermented in the fermentation tank (213) is subjected to aerobic turning and drying treatment, then is dried by the dryer to obtain dried biogas residue, and the dried biogas residue is conveyed to an incinerator of an RDF power plant to be used as fuel;
the methane bacteria incubator (25) is provided with a methane liquid inlet (25a) in the side wall, methane liquid in the methane liquid storage pool (23) flows into the methane bacteria incubator (25) from the methane liquid inlet (25a), and a methane liquid outlet (25b) and a methane liquid outlet (25c) penetrating through the top of the methane bacteria incubator (25) are arranged on the methane bacteria incubator (25);
the biogas slurry pipeline system comprises a first biogas slurry conveying pipeline (24a), a second biogas slurry conveying pipeline (24b) and a third biogas slurry conveying pipeline (24c), wherein,
a first biogas slurry conveying pipeline (24a) comprising a biogas slurry conveying pipeline, one end of the first biogas slurry conveying pipeline is communicated with the biogas slurry overflow tank, the other end of the first biogas slurry conveying pipeline is communicated with a biogas slurry inlet (23a) of the biogas slurry storage tank,
a second biogas slurry conveying pipeline (24b) which comprises a second biogas slurry conveying pump and a biogas slurry conveying pipeline communicated with the second biogas slurry conveying pump, wherein the biogas slurry conveying pipeline communicated with the inlet of the second biogas slurry conveying pump is communicated with a biogas slurry outlet (23b) of the biogas slurry storage tank, the biogas slurry conveying pipeline communicated with the outlet of the second biogas slurry conveying pump is communicated with a biogas slurry inlet (25a) of the methanobacteria incubator, so that biogas slurry is input into the methanobacteria incubator from the biogas slurry storage tank (23),
a third biogas slurry conveying pipeline (24c) which comprises a third biogas slurry conveying pump and a biogas slurry conveying pipeline communicated with the third biogas slurry conveying pump, wherein the biogas slurry conveying pipeline communicated with the inlet of the third biogas slurry conveying pump passes through a biogas slurry outlet (25b) of the methanobacteria incubator and is introduced into the methanobacteria incubator, a pipe orifice of the biogas slurry conveying pipeline is arranged below the liquid level of biogas slurry in the methanobacteria incubator, the biogas slurry conveying pipeline communicated with the outlet of the third biogas slurry conveying pump is communicated with a spraying system liquid outlet (211) arranged at the top end of a biogas bin (21),
the biogas pipeline system comprises a biogas pump (261), a gas collection cabinet (262), a biogas purification device (263) and a biogas pipeline (264), wherein,
the biogas pipeline (264) comprises a main pipeline and two branch pipelines arranged on the main pipeline, wherein the first branch pipeline is communicated with a biogas outlet (212) of a biogas bin (21), the second branch pipeline is communicated with a biogas outlet (25c) of a methane bacteria incubator, a biogas pump (261), a gas collecting cabinet (262) and a biogas purifying device (263) are sequentially arranged on the main pipeline, the biogas purifying device (263) is communicated with a natural gas pipe network,
the geothermal system (27) comprises a geothermal water inlet pipeline, a geothermal water outlet pipeline, a heat exchanger (28), a circulating pump and a water inlet valve, the geothermal system is arranged below the methane bin (21) and the methane bacteria incubator (25),
the heat exchanger (28) is arranged between the geothermal system (27) and the waste heat circulating water pipeline (34) of the RDF power plant, so that low-temperature geothermal circulating water in the geothermal water outlet pipe is heated to become high-temperature geothermal circulating water to enter the geothermal water inlet pipeline, and meanwhile, the waste heat circulating water in the waste heat circulating water pipeline of the RDF power plant is cooled, so that the waste heat circulating water continues to cool the incinerator in the RDF power plant;
an RDF power plant (3) comprises a fuel stack (31), an RDF incinerator (32), a high-temperature flue gas discharge device (33), a waste heat circulating water pipeline (34) and a steam pipeline (35), wherein,
a fuel stacking part (31) which is internally provided with a combustible stacking part, a biogas residue stacking part and a material mixing area, wherein the combustible is obtained from a sorting plant, the biogas residue is dried biogas residue processed by a drying device,
an RDF incinerator (32) which is provided with a high-temperature flue gas discharge device (33), a waste heat circulating water pipeline (34) water inlet, a steam pipeline (35) steam inlet, a fly ash and ash residue treatment device (37),
the high-temperature flue gas discharge device (33) comprises a chimney and a smoke exhaust pipeline communicated with the chimney, the smoke exhaust pipeline is communicated with the drying device (214), the high-temperature flue gas enters a dryer of the drying device through the smoke exhaust pipeline, and the fresh and wet biogas residues in the drying device are dried by the high-temperature heat energy of the high-temperature flue gas;
the waste heat circulating water pipeline (34) is a closed circulating water loop, a circulating pump is arranged on the waste heat circulating water pipeline, circulating water in the waste heat circulating water pipeline circularly flows between the heat exchanger (28) and the incinerator of the RDF power plant, high-temperature waste heat circulating water in the waste heat circulating water pipeline is used as a heat source of the heat exchanger (28), low-temperature waste heat circulating water generated after heat exchange flows back to the incinerator, the incinerator is cooled, and high-temperature waste heat circulating water is formed again;
and one end of the steam pipeline (35) is communicated with the RDF incinerator, the other end of the steam pipeline is communicated with the turbo generator unit (36), and high-temperature steam generated by the RDF incinerator is input into the turbo generator unit (36) through the steam pipeline (35) and serves as a power source for power generation.
2. The resource recycling system according to claim 1, characterized in that the sorting plant (1) in which a crusher (11), a drum screen (12), a first iron remover (13a), a second iron remover (13b), a manual sorting device (14) and a fine crusher (15) are arranged in this order,
the crusher (11) is connected with the inlet (12a) of the roller screening machine through a conveyor belt, and the maximum particle size of particles treated by the crusher is 70 mm;
the roller screening machine (12) comprises a roller screen and an undersize conveyor belt which are horizontally arranged, wherein screen holes with the aperture of 60-80 mm are distributed on the roller screen, garbage particles obtained by crushing through the crusher enter the roller screen, the roller screen rotates, the garbage particles are driven to roll in the roller screen through the rotation of the roller screen, the garbage particles are fully contacted with the screen, and therefore the garbage particles with the particle size larger than the screen holes are reserved in the roller screen to obtain oversize products, and the oversize products are conveyed to a first iron remover through the conveyor belt to be subjected to iron removal and then are manually sorted; the garbage particles with the particle size smaller than the sieve pores fall into a conveying belt below the drum sieve to obtain undersize products, and the undersize products are conveyed to a second iron remover for iron removal and then conveyed to a biogas plant;
a first de-ironing separator (13a) disposed above the conveyor belt between the drum screen and the manual sorting device (14);
a second iron remover (13b) arranged above the conveyor belt between the roller screening machine and the organic matter piling place (51),
a manual sorting device (14) arranged between the first iron remover (13a) and the fine crusher (15) and connected with the fine crusher (15) through a conveyor belt,
and a fine crusher (15) disposed behind the manual sorting device, wherein the maximum particle size of the particles treated by the fine crusher is 30-50 mm.
3. The resource recycling system of claim 1, wherein the biogas slurry storage tank (23) in the biogas plant (2) is arranged outside the wall of the biogas storage tank (21), a biogas slurry inlet (23a) is arranged at the upper part of the side wall of the biogas slurry storage tank (23), and biogas slurry in the biogas slurry overflow tank enters the biogas slurry storage tank through the biogas slurry inlet (23 a); the upper part of the other side wall of the biogas slurry storage pool (23) is communicated with a seepage return pipeline in the landfill (4), and seepage generated in a landfill pit in the landfill (4) enters the biogas slurry storage pool through a seepage inlet (23 c); a biogas slurry outlet (23b) is formed in the lower portion of the side wall of the biogas slurry storage tank (23), and biogas slurry in the biogas slurry storage tank is discharged out of the biogas slurry storage tank (23) through the biogas slurry outlet (23b) and enters the methane bacteria incubator (25).
4. The resource recycling system of claim 1, wherein the biogas slurry piping system in the biogas plant (2) forms a closed path through the biogas silo (21), the biogas slurry overflow tank (22), the biogas slurry storage tank (23) and the methanogen incubator (25), and the biogas slurry is continuously circulated between the biogas silo (21) and the methanogen incubator (25).
5. The resource recycling system of claim 1, wherein the gas collection cabinet of the biogas plant is provided with a biogas inlet and a biogas outlet for collecting and storing biogas from the biogas bin and the methane bacteria incubator.
6. The system according to claim 1, wherein the geothermal water intake pipe and the geothermal water outtake pipe in the biogas plant form a closed loop, and a circulation pump is provided therebetween, geothermal circulating water circulates in the geothermal system (27), and when there is insufficient geothermal circulating water in the system, the water intake valve is opened to supplement geothermal circulating water to the geothermal system.
7. The resource recycling system of claim 1, wherein the fuel dump is connected to the RDF incinerator (32) by a conveyor belt therebetween for dumping and mixing combustible material from the sorting plant and dried biogas residue from the biogas plant.
8.According toThe resource recycling system of claim 1, wherein the steam turbine generator unit (36) of the RDF power plant is connected to the national grid, the separation plant (1), the biogas plant (2), the RDF power plant (3) and the landfill (4), and the steam turbine generator unit generates electricity which is fed to the national grid in part and to the separation plant (1), the biogas plant (2), the RDF power plant (3) and the landfill (4) in part to supply electricity thereto.
9. The resource recycling system of claim 1, wherein the RDF power plant includes a fly ash and ash disposal unit (37) comprising a boiler slag disposal unit and a bag-type dust collector, wherein the boiler slag disposal unit is disposed inside the RDF incinerator (32) for collecting slag generated from the RDF incinerator; the bag-type dust collector is communicated with the top end of the RDF incinerator (32) through a pipeline and used for collecting fly ash generated by the RDF incinerator (32), slag obtained by the boiler slag treatment device and the fly ash obtained by the bag-type dust collector are collected in a centralized mode, stable solidification is carried out, and when the toxicity reaches the standard, the fly ash is conveyed to an incineration waste stacking area (41).
10. The resource reuse system according to claim 1, wherein the landfill (4) includes an incineration waste disposal area (41), a landfill pit (42), and a leachate return pipe (43), wherein,
and the bottom of the landfill pit (42) is provided with a seepage return pipeline (43), and the seepage return pipeline (43) is communicated with a seepage inlet (23c) of the biogas slurry storage pool.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334003.4U CN203936118U (en) | 2014-06-20 | 2014-06-20 | A kind of resource reutilization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420334003.4U CN203936118U (en) | 2014-06-20 | 2014-06-20 | A kind of resource reutilization system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028544A (en) * | 2014-06-20 | 2014-09-10 | 黑龙江龙能伟业燃气股份有限公司 | Resource recycling system |
| CN107597794A (en) * | 2017-09-07 | 2018-01-19 | 段建辉 | A kind of refuse classification recycles integrated apparatus |
| CN111872048A (en) * | 2020-07-30 | 2020-11-03 | 山东大学 | Wet garbage humidifying fermentation power generation system and process |
-
2014
- 2014-06-20 CN CN201420334003.4U patent/CN203936118U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028544A (en) * | 2014-06-20 | 2014-09-10 | 黑龙江龙能伟业燃气股份有限公司 | Resource recycling system |
| CN107597794A (en) * | 2017-09-07 | 2018-01-19 | 段建辉 | A kind of refuse classification recycles integrated apparatus |
| CN111872048A (en) * | 2020-07-30 | 2020-11-03 | 山东大学 | Wet garbage humidifying fermentation power generation system and process |
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