CN109078965A - A kind of Changing Urban Garbage into Resources processing system - Google Patents
A kind of Changing Urban Garbage into Resources processing system Download PDFInfo
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- CN109078965A CN109078965A CN201811078994.3A CN201811078994A CN109078965A CN 109078965 A CN109078965 A CN 109078965A CN 201811078994 A CN201811078994 A CN 201811078994A CN 109078965 A CN109078965 A CN 109078965A
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 119
- 238000012545 processing Methods 0.000 title claims abstract description 36
- 239000000446 fuel Substances 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 20
- 238000001354 calcination Methods 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 235000019738 Limestone Nutrition 0.000 claims abstract description 11
- 239000006028 limestone Substances 0.000 claims abstract description 11
- 238000007781 pre-processing Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004927 clay Substances 0.000 claims abstract description 8
- 239000006148 magnetic separator Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 38
- 239000002699 waste material Substances 0.000 claims description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 30
- 239000003546 flue gas Substances 0.000 claims description 30
- 239000004033 plastic Substances 0.000 claims description 30
- 229920003023 plastic Polymers 0.000 claims description 30
- 239000010893 paper waste Substances 0.000 claims description 29
- 229910001385 heavy metal Inorganic materials 0.000 claims description 28
- 238000001035 drying Methods 0.000 claims description 22
- 239000005416 organic matter Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 18
- 238000001704 evaporation Methods 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000012717 electrostatic precipitator Substances 0.000 claims description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000003517 fume Substances 0.000 claims description 11
- 239000011146 organic particle Substances 0.000 claims description 11
- 239000002244 precipitate Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- 238000010517 secondary reaction Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 6
- 239000013043 chemical agent Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000003344 environmental pollutant Substances 0.000 claims description 5
- 231100000719 pollutant Toxicity 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 239000002738 chelating agent Substances 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 claims description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 150000003558 thiocarbamic acid derivatives Chemical class 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims 1
- 238000012546 transfer Methods 0.000 claims 1
- 239000004566 building material Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004056 waste incineration Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 238000007885 magnetic separation Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000002341 toxic gas Substances 0.000 description 3
- 239000010791 domestic waste Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 241000700605 Viruses Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003359 percent control normalization Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 231100000004 severe toxicity Toxicity 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- -1 sulphide amino formic acid Salt Chemical class 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- 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
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of Changing Urban Garbage into Resources processing system, including preprocessing system, municipal refuse is prepared into raw material by what artificial separation platform, magnetic separator, rotary screen, winnowing machine and jigging sorting machine sub-elected garbage raw material and garbage derivatived fuel；The raw material for preparing for the garbage derivatived fuel that pretreatment procedure obtains is prepared garbage derivatived fuel, while garbage raw material being mixed with clay, lime stone, iron powder by refuse disposal system, and prepares building materials raw material through calcined by rotary kiln after broken；After-treatment system, the flying dust generated by way of dedusting and chemical reaction to the calcining of rotary kiln are handled；Not only make municipal refuse be converted into building materials raw material by the system, so that municipal refuse is able to carry out resource utilization, and the utilization rate of municipal refuse is greatly improved.
Description
Technical field
The present invention relates to a kind of urban garbage treatment system, in particular to a kind of Changing Urban Garbage into Resources processing system.
Background technique
With the development of urban construction and increase, the expansion of city function and the raising of Living consumption of population, city
The yield of city's rubbish steeply rises with burden, counts according to Chinese city environmental sanitation association, China generates nearly 1,000,000,000 every year
Ton rubbish, wherein about 400,000,000 tons of Output of Domestic Waste, build 500,000,000 tons of rubbish or so, in addition, there are also 10,000,000 tons of kitchen garbage
Left and right, Chinese rubbish total amount is among the best in the world.Quickening and people's lives water with China's Development of China's Urbanization
Flat raising, for application of city life garbage also with the speed increase of annual 5%-8% or so, garbage-surrounded city is giving the city of China to strike
Alarm bell is rung, refuse harm has become serious environment and social concern.
Currently, to the processing of municipal refuse, there are mainly four types of systems: landfill method, pyrolysismethod, incineration method, composting method；" landfill
Method " operation is easier to, but there is a large amount of land occupation resources, generate that secondary pollution and potential dangerous and investment are huge, make
With the phase it is limited the problems such as, and have lost largely recyclable resource；" pyrolysismethod " can control noxious gas emission, but still have landfill
The problem of measuring big and secondary pollution is invested quite a few；" compost treatment method " is conducive to the utilization of organic matter in garbage, but to locating
It manages rubbish composition to require strictly, and the oxious components such as heavy metal in rubbish meeting contaminated soil and underground water, hence into city
The food chain of the villeggiatura people, and the processing of its residue and the control of germ, virus are also very intractable；" incineration method " is municipal refuse
The many cities of the important process system of minimizing and China or one of Major Systems implemented, but waste incineration
Equipment investment is big, operating cost is high, and such as hydrogen chloride, nitrogen oxide, sulfur oxide and severe toxicity are often generated especially in burning process
The pernicious gases such as two uh English；Moreover, must fill there are also the rubbish ash of former garbage weight 10% or so or give up as danger again
Object is especially handled, and therefore, explores a kind of big target of achievable garbage disposal four --- minimizing, recycling, innoxious, stabilization
Garbage disposal system, be the target of personages of various circles of society's long-sought.
Summary of the invention
Municipal refuse is handled using rotary kiln and produces the technology and equipment of building materials raw material, replaces incinerator with rotary kiln,
The feature of high, gas time length in kiln using its temperature, the generation of the toxic gases such as two uh English of control；And incineration firing with
Sinter leaching is unified to be completed, and is received oxious component and lime-ash using the characteristic of clinker and is formed stable mineral, eliminates completely residual
Slag；Rotary kiln and its dust-precipitator etc. are become waste incineration and sinter leaching and control the multipurpose device of atmosphere pollution, then it can be big
Amplitude reduction investment.It can be seen that this system can be realized daily-life garbage without environmental pollution, recycling treatment.
A kind of Changing Urban Garbage into Resources processing system proposed the purpose of the present invention is to solve background technique, not only
It enables to municipal refuse to be converted into building materials raw material, so that municipal refuse is able to carry out resource utilization, city can be greatly improved
The utilization rate of city's rubbish, and the flue gas that generates and flying dust carry out at synthetical recovery when can prepare building materials raw material to calcining rubbish
Reason, has broad application prospects.
To achieve the goals above, present invention employs following technical solutions:
Municipal refuse is passed through artificial separation platform, magnetic separation by a kind of Changing Urban Garbage into Resources processing system, including preprocessing system
What machine, rotary screen, winnowing machine and jigging sorting machine sub-elected garbage raw material and garbage derivatived fuel prepares raw material；
Rubbish rotary calcining processing system, by garbage derivatived fuel that pretreatment procedure obtains prepare raw material prepare it is garbage derivatived
Fuel, while garbage raw material being mixed with clay, lime stone, iron powder, and is built after broken through calcined by rotary kiln preparation
Material raw material；
After-treatment system, the flying dust generated by way of dedusting and chemical reaction to the calcining of rotary kiln are handled.
As further restriction of the invention, the preprocessing system includes:
The artificial separation platform that the article that can directly recycle and part waste paper and waste plastics are come out from metropolitan wastes sorting；
Metal in rubbish is separated into magnetic separator；
The rotary screen that rubbish is separated thick, thin material by material particular diameter size；
The winnowing machine that waste paper and waste plastics are separated from rough material with coarse stone；
Material is gone out to the jigging sorting machine of the lighter organic matter of density and the heavier inorganic matter of density by the differential separation of density；
The withering vacuum drier of waste paper, waste plastics that artificial separation and selection by winnowing are obtained；
It is crushed coarse stone and the heavier inorganic matter of density that selection by winnowing and jigging sort to obtain rushing for garbage raw material
Impact crusher；
Artificial separation platform, magnetic separator, rotary screen are sequentially connected, adjacent to pass through conveying band connection between the two；The sieve of rotary screen
Upper object is connect by conveyer belt with winnowing machine, and the screenings of rotary screen is connect by conveyer belt with jigging sorting machine.
As further restriction of the invention, rubbish rotary calcining processing system includes:
The drying machine that the organic matter that pretreatment procedure obtains is dried；
Organic matter after drying is crushed to obtain the pulverizer of the organic particle of uniform particle sizes；
The waste paper for the drying that pretreatment procedure obtains and waste plastics are stirred the mixing machine mixed with organic particle；
Mixed organic particle, waste paper and waste plastics are passed through to the molding machine that garbage derivatived fuel is prepared；
Drying machine, pulverizer, mixing machine and molding machine are sequentially connected, adjacent to pass through conveying band connection between the two.
As further restriction of the invention, rubbish rotary calcining processing system further include:
It is mixed in the garbage raw material for obtaining pretreatment procedure with clay, lime stone, iron powder, mixture is crushed
Ball mill；
Ball mill connects head tank by Pneumatic conveying pipeline, and smashed mixture carries out standing deposition in head tank；
Head tank Pneumatic conveying pipeline connects material homogenizer tank, and mixture is homogenized processing in material homogenizer tank；
Material homogenizer tank connects the high-end kiln tail of rotary kiln by pipeline, by the feedstock transportation of homogenizing to rotary kiln；
By the coal injection pipe of the low side kiln hood of fuel oil, lime-ash and garbage derivatived fuel input rotary kiln；
Cooling cooler is carried out to calcined material；
The blender of homogenizing is stirred to clinker after cooling；
Gypsum is added into the clinker after stirring, and to the pulverizer that mixed material is crushed.
As further restriction of the invention, after-treatment system includes:
The flue gas that rotary kiln is generated carries out the electrostatic precipitator of preliminary dust removal, for adsorbing the larger particles in flue gas；
For removing the spray column of sulfur dioxide and hydrogen chloride gas；
The heater that the flue gas that spray column comes out is heated；
It is dusted the sack cleaner of processing to flue gas, pulverized limestone and active carbon are sprayed into sack cleaner for trapping
Heavy metal and two uh English；
The air-introduced machine to pressurize to flue gas；
After being heated to flue gas using the heat exchanger that rotary kiln connects and ammonia is added, for removing nitrogen oxides in effluent
Reductor；
Fume extractor for the gas discharge after restoring；
It is arranged in fume extractor, the flue gas monitored in real time for the content to each pollutant of flue gas in fume extractor exists
Line monitoring system；
Electrostatic precipitator, spray column, heater, sack cleaner, air-introduced machine, reductor, fume extractor are sequentially connected, and adjacent two
It is connected between person by gas pipeline.
As further restriction of the invention, after-treatment system further include:
Collect the flying dust collecting-tank of rotary kiln flying dust；
For tentatively removing the primary reaction pond of heavy metal in slurries, the chemical agent added in primary reaction pond is sodium carbonate；
For collecting the primary clarifier of the heavy metal scum of primary sedimentation；
For finally removing the secondary reaction pond of heavy metal in slurries, the chemical agent added in secondary reaction pond is heavy metal chelating
Agent；
For collecting the post-precipitate pond of the heavy metal scum of secondary precipitation；
For further removing the filter device of graininess impurity in waste water；
It carries out being dehydrated isolated solid-liquid separator for the heavy metal scum to primary clarifier and post-precipitate pond；
The isolated withering drying machine of heavy metal scum is dehydrated to solid-liquid separator；
The enrichment facility that concentration removes salt treatment is carried out to filtered waste water；
It shrinks to remaining a small amount of high-salt concentrated and is evaporated the evaporating column of crystallization；
Flying dust collecting-tank, primary reaction pond, primary clarifier, secondary reaction pond, post-precipitate pond, filter device, enrichment facility,
Evaporating column and heat exchanger are sequentially connected, adjacent to be connected between the two by water pump with pipeline；Primary clarifier and post-precipitate pond
It is connected with solid-liquid separator, solid-liquid separator is separately connected drying machine and primary reaction pond by pipeline, and enrichment facility is also
Flying dust collecting-tank is connected by pipeline, evaporating column also passes through pipeline and connect with electrostatic precipitator.
The preparation that carries out building materials raw material cannot be direct plungeed into rotary kiln by conventional pretreated rubbish, and reason is such as
Under:
First, the proportion of cement slurry has strict requirements, if the inorganic matter in waste is directly used as secondary raw material, because of it
Chemical component is unstable, and discreteness is big, therefore it is unable to satisfy the technical requirements uniform into kiln raw ingredients, quality is stable；The
Two, rotary kiln is a sensitive heat power engineering system, whether hot-fluid, air-flow or material stream vary slightly can all destroy it is original
System balancing, therefore to avoid system from, in disturbing, being answered when waste is used as secondary fuel by excessive when using alternative fuel
Have a minimum requirements to its calorific value, 11MJ/kg be usually set as minimum permission calorific value, however the universal calorific value of the municipal refuse in China compared with
It is low, it is unable to reach the minimum requirements of 11MJ/kg, therefore, the organic matter in waste is not suitable for the substitution for being directly used as rotary kiln
Fuel.Therefore, waste also needs prepare to secondary former, fuel after routinely pre-processing to can be only achieved production requirement.
With the rapid development of my social economy, the demand to the energy can be increasing, and China has become second-biggest-in-the-world
Energy-consuming state is continued to develop by present circumstances, domestic conventional energy resource, such as storage deficiency will be present in matchmaker, oil and natural gas
Crisis, and the problem of environmental pollution being induced by it also is badly in need of being controlled.
Garbage derivatived fuel can substitute coal as the alternative some conventional energy resources of new energy substance, be applicable in
In the rubbish pretreatment process of waste incineration blown power plant, suitable for being transformed to existing boiler.
The production preparation of garbage derivatived fuel generally will be by several procedures such as sorting, dry, broken and compression formings, no
With preparation process in some detailed process or the mutual different from of link.Therefore, based on this consideration, applicant sets about studying and incite somebody to action
Part combustibility material after refuse classification prepares alternative fuel of the garbage derivatived fuel for rotary kiln, can not only improve rubbish
The utilization rate of rubbish more reduces the fuel consumption of rotary kiln, has good technical effect to the volume reduction treatment of rubbish.
Minimum requirements due to coping with its calorific value when waste is used as secondary fuel is 11MJ/kg, it is therefore desirable to be ensured
The calorific value of the garbage derivatived fuel of preparation is greater than above-mentioned minimum, while height can also be mixed while garbage derivatived fuel is added
Calorific value waste or conventional fuel (such as coal dust or fuel oil) are to guarantee burning quality.
The organic matter obtained after jigging is sorted is dried by drying machine, then is crushed to obtain using crusher
The organic matter powder of uniform particle sizes, then the waste paper obtained after artificial separation and selection by winnowing and waste plastics are carried out by paper drying machine
It is dry, obtained organic matter powder is proportionally imported in mixing machine with waste paper and waste plastics and is mixed, and to mixing machine
Middle mixture is heated to control the moisture content of mixture, and finally mixed mixture is passed through in molding machine and suppresses preparation
Garbage derivatived material.
Since the waste paper of phase homogenous quantities and the calorific value of waste plastics are there are obvious gap, the calorific value of waste paper is about 15MJ/kg, and
The calorific value of waste plastics about 40MJ/kg, therefore, in order to ensure that the calorific value of the garbage derivatived fuel of preparation is not only above minimum requirements 11MJ/
Kg, and can be in the case where guaranteeing that waste paper is effectively removed, the higher the better for the calorific value of the garbage derivatived fuel of preparation.
Learn that high heating value rubbish accounts for whole cities by the original-source by classification experiment carried out to different pilot resident living cells
The 18.26% of Output of Domestic Waste, wherein Plastic component accounts for 47.4%, the wooden class account for 2.2%, stationery 27.1%, textile fabric 7.6%,
Therefore compound 15.6% controls ratio (by mass) 1:0.5~0.7 of waste plastics and waste paper.
Therefore, the group of mixture is selected to be divided into (according to mass percent meter): 40% organic matter powder, 20% waste paper and 40%
Waste plastics.
In addition, by the physical property table of comparisons of the garbage derivatived fuel of different water cut in Fig. 2, it can be seen that with aqueous
The increase of rate, particle length shorten, and when especially 15% moisture content, most of particle length is shorter.And it is come out from molding machine
Particle it is frangible after drying, effect of resist compression is poor, particle through a long time squeeze become it is broken after influence the later period burning effect.Moisture content
Increase so that the mouldability of mixture is deteriorated, when the moisture content of mixture is high, although also can compression forming, its stability become
Difference can become loose after dry.But moisture also cannot be too low, and moisture content is too low, will cause between mixture and the mold of molding machine
Frictional force increases, and reduces discharging speed, to reduce load, reduces yield, energy consumption is caused to increase.With the increasing of moisture content
Add, the grain density and bulk density of garbage derivatived fuel have on a declining curve, and main cause is the increase with moisture, object
Material becomes more lubricious, it is easier to extrude from ring moulds hole, the degree of packing of particle and density is caused to be declined, and the length of particle
Degree decreases.In summary, moisture content is advisable in 9%-13% in garbage derivatived fuel preparation process.Therefore, selection control rubbish
The moisture content of rubbish derivatived fuel is (according to mass percent meter): 9%~13%.
As further restriction of the invention, contain in mixed organic particle, waste paper and waste plastics (according to matter
Measure percentages) 40% organic matter powder, 20% waste paper and 40% waste plastics, and control the moisture content of the garbage derivatived fuel
(according to mass percent meter) is 9%~13%.
As further restriction of the invention, the basic agent sprayed into spray column is specially sodium hydroxide.
As further restriction of the invention, sodium carbonate amount is 40-70 kilograms of slurries dosage per ton, the heavy metal
Agent for capturing is thiocarbamates, 1-5 kilograms of clear liquid dosage per ton.
As further restriction of the invention, heat exchanger passes through a part of high-temperature flue gas for extracting rotary kiln, right
Evaporating column is heated, and high-salt concentrated shrink is conducted heat rapidly, evaporated in evaporating column, and liquid portion is with the gaseous state shape of vapor
State returns in electrostatic precipitator and carries out purified treatment again, and the solid salt evaporated all recycles.
The beneficial effects of the present invention are:
1, municipal refuse is handled using rotary kiln and produce the technology and equipment of building materials raw material, replace incinerator with rotary kiln, benefit
With the feature that its temperature is high, gas time in kiln is long, the generation of the toxic gases such as two uh English of control；And incineration firing with it is ripe
Material firing is unified to be completed, and is received oxious component and lime-ash using the characteristic of clinker and is formed stable mineral, completely elimination residue；
Rotary kiln and its dust-precipitator etc. are become waste incineration and sinter leaching and control the multipurpose device of atmosphere pollution, then it can be significantly
Reduce investment.It can be seen that this system can be realized daily-life garbage without environmental pollution, recycling treatment.
2, by the way that the waste paper obtained after artificial separation and selection by winnowing and waste plastics to be dried by paper drying machine, will
To organic matter powder proportionally import in mixing machine and mixed with waste paper and waste plastics, and to mixture in mixing machine into
Row is heated to control the moisture content of mixture, finally prepares garbage derivatived material, the utilization rate of municipal refuse can be greatly improved,
And the fuel consumption of rotary kiln can be lowered.
3, the flue gas and flying dust generated when by preparing building materials raw material to calcining rubbish carries out synthetical recovery processing, Neng Gouyou
Effect reduces effective control that calcining generates gas and flying dust pollutant, realizes the innoxious of garbage disposal.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of Changing Urban Garbage into Resources processing system proposed by the present invention.
Fig. 2 is the physical property table of comparisons of the garbage derivatived fuel of different water cut.
Specific embodiment
It is next combined with specific embodiments below that the present invention is further described.
Embodiment one
Referring to Fig.1, a kind of Changing Urban Garbage into Resources processing system, comprising:
Municipal refuse is passed through artificial separation platform, magnetic separator, rotary screen, winnowing machine and jigging sorting machine point by preprocessing system
That selects garbage raw material and garbage derivatived fuel prepares raw material；
Rubbish rotary calcining processing system, by garbage derivatived fuel that pretreatment procedure obtains prepare raw material prepare it is garbage derivatived
Fuel, while garbage raw material being mixed with clay, lime stone, iron powder, and is built after broken through calcined by rotary kiln preparation
Material raw material；
After-treatment system, the flying dust generated by way of dedusting and chemical reaction to the calcining of rotary kiln are handled.
Wherein, preprocessing system includes: the article that can will directly recycle and part waste paper and waste plastics from city rubbish
The artificial separation platform that rubbish sorts out；Metal in rubbish is separated into magnetic separator；It will by material particular diameter size by rubbish
Slightly, the rotary screen that carefully material is separated；The winnowing machine that waste paper and waste plastics are separated from rough material with coarse stone；
Material is gone out to the jigging sorting machine of the lighter organic matter of density and the heavier inorganic matter of density by the differential separation of density；To artificial
The withering vacuum drier of waste paper, waste plastics that sorting and selection by winnowing obtain；Selection by winnowing and jigging are sorted thick
Ratchel and the heavier inorganic matter of density are crushed to obtain the impact crusher of garbage raw material；Artificial separation platform, magnetic separation
Machine, rotary screen are sequentially connected, adjacent to pass through conveying band connection between the two；The oversize of rotary screen passes through conveyer belt and winnowing machine
The screenings of connection, rotary screen is connect by conveyer belt with jigging sorting machine.
Wherein, rubbish rotary calcining processing system includes: the drying that the organic matter that pretreatment procedure obtains is dried
Machine；Organic matter after drying is crushed to obtain the pulverizer of the organic particle of uniform particle sizes；Pretreatment procedure is obtained
Drying waste paper and waste plastics the mixing machine mixed is stirred with organic particle；By mixed organic particle, give up
Paper and waste plastics pass through the molding machine that garbage derivatived fuel is prepared；Drying machine, pulverizer, mixing machine and molding machine according to
Secondary connection, it is adjacent to pass through conveying band connection between the two.
Wherein, rubbish rotary calcining processing system further include: in the garbage raw material and clay, stone for obtaining pretreatment procedure
Lime stone, iron powder are mixed, the ball mill crushed to mixture；Ball mill connects head tank by Pneumatic conveying pipeline,
Smashed mixture carries out standing deposition in head tank；Head tank Pneumatic conveying pipeline connects material homogenizer tank, mixture
Processing is homogenized in material homogenizer tank；Material homogenizer tank connects the high-end kiln tail of rotary kiln by pipeline, by the original of homogenizing
Material is delivered to rotary kiln；By the coal injection pipe of the low side kiln hood of fuel oil, lime-ash and garbage derivatived fuel input rotary kiln；After calcining
Material carry out cooling cooler；The blender of homogenizing is stirred to clinker after cooling；Add into the clinker after stirring
Enter gypsum, and to the pulverizer that mixed material is crushed.
Wherein, after-treatment system includes: that the flue gas for generating rotary kiln carries out the electrostatic precipitator of preliminary dust removal, for inhaling
Larger particles in attached flue gas；For removing the spray column of sulfur dioxide and hydrogen chloride gas；To spray column come out flue gas into
The heater of row heat treatment；The sack cleaner of processing is dusted to flue gas, into sack cleaner spray into pulverized limestone with
And active carbon is used for trap heavy metals and two uh English；The air-introduced machine to pressurize to flue gas；The heat exchanger connected using rotary kiln
After being heated to flue gas and ammonia is added, for removing the reductor of nitrogen oxides in effluent；For the gas after restoring
The fume extractor of discharge；It is arranged in fume extractor, is carried out for the content to each pollutant of flue gas in fume extractor real-time
The flue gas online monitoring system of monitoring；Electrostatic precipitator, spray column, heater, sack cleaner, air-introduced machine, reductor, smoke evacuation
Device is sequentially connected, adjacent to be connected between the two by gas pipeline.
Embodiment two
After-treatment system further include: collect the flying dust collecting-tank of rotary kiln flying dust；For tentatively remove heavy metal in slurries just
Order reaction pond, the chemical agent added in primary reaction pond are sodium carbonate；For collecting the primary of the heavy metal scum of primary sedimentation
Sedimentation basin；For finally removing the secondary reaction pond of heavy metal in slurries, the chemical agent added in secondary reaction pond is heavy metal
Agent for capturing；For collecting the post-precipitate pond of the heavy metal scum of secondary precipitation；It is miscellaneous for further removing graininess in waste water
The filter device of matter；It carries out being dehydrated isolated separation of solid and liquid for the heavy metal scum to primary clarifier and post-precipitate pond
Device；The isolated withering drying machine of heavy metal scum is dehydrated to solid-liquid separator；To filtered waste water into
Row concentration removes the enrichment facility of salt treatment；It shrinks to remaining a small amount of high-salt concentrated and is evaporated the evaporating column of crystallization；Flying dust catchments
Pond, primary reaction pond, primary clarifier, secondary reaction pond, post-precipitate pond, filter device, enrichment facility, evaporating column and heat exchange
Device is sequentially connected, adjacent to be connected between the two by water pump with pipeline；Primary clarifier and post-precipitate pond with separation of solid and liquid
Device is connected, and solid-liquid separator is separately connected drying machine and primary reaction pond by pipeline, and enrichment facility is also connected by pipeline
Flying dust collecting-tank, evaporating column also pass through pipeline and connect with electrostatic precipitator.
Embodiment three
Control in mixed organic particle, waste paper and waste plastics containing (according to mass percent meter) 40% organic matter powder,
20% waste paper and 40% waste plastics, and control the garbage derivatived fuel moisture content (according to mass percent meter) be 9%~
13%。
Meanwhile selecting the basic agent sprayed into spray column is specially sodium hydroxide.
Selecting sodium carbonate amount is 40-70 kilograms of slurries dosage per ton, and the heavy metal chelating agent is sulphide amino formic acid
Salt, 1-5 kilograms of clear liquid dosage per ton.
Heat exchanger heats evaporating column by a part of high-temperature flue gas of extraction rotary kiln, high in evaporating column
Saliferous condensed water is conducted heat rapidly, is evaporated, and liquid portion is returned in electrostatic precipitator in the form of the gaseous state of vapor and carried out again
Secondary purified treatment, the solid salt evaporated all recycle.
Municipal refuse can be sub-elected garbage raw material by artificial separation, magnetic separation and mechanical sorting mode by the present invention
And the preprocessing system for preparing raw material of garbage derivatived fuel；The preparation for the garbage derivatived fuel that pretreatment procedure is obtained is former
Material prepares garbage derivatived fuel, while garbage raw material being mixed with clay, lime stone, iron powder, and passes through back after broken
Rotary kiln calcining prepares the rubbish rotary calcining system of building materials raw material；Municipal refuse is not only made to be converted into building materials raw material, so that city
City's rubbish is able to carry out resource utilization, and the utilization rate of municipal refuse is greatly improved.Then, pass through the side of dedusting and chemical reaction
The after-treatment system that formula handles the flying dust and flue gas of the calcining generation of rotary kiln, can be effectively reduced calcining and generates gas
With effective control of flying dust pollutant, the innoxious of garbage disposal is realized.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of Changing Urban Garbage into Resources processing system, it is characterised in that:
Including preprocessing system, municipal refuse is sorted by artificial separation platform, magnetic separator, rotary screen, winnowing machine and jigging
What machine sub-elected garbage raw material and garbage derivatived fuel prepares raw material；
Rubbish rotary calcining processing system, by garbage derivatived fuel that pretreatment procedure obtains prepare raw material prepare it is garbage derivatived
Fuel, while garbage raw material being mixed with clay, lime stone, iron powder, and is built after broken through calcined by rotary kiln preparation
Material raw material；
After-treatment system, the flying dust generated by way of dedusting and chemical reaction to the calcined by rotary kiln are handled.
2. a kind of Changing Urban Garbage into Resources processing system according to claim 1, it is characterised in that: the preprocessing system
Include:
The artificial separation platform that the article that can directly recycle and part waste paper and waste plastics are come out from metropolitan wastes sorting；
Metal in rubbish is separated into magnetic separator；
The rotary screen that rubbish is separated thick, thin material by material particular diameter size；
The winnowing machine that waste paper and waste plastics are separated from rough material with coarse stone；
Material is gone out to the jigging sorting machine of the lighter organic matter of density and the heavier inorganic matter of density by the differential separation of density；
The withering vacuum drier of waste paper, waste plastics that artificial separation and selection by winnowing are obtained；
It is crushed coarse stone and the heavier inorganic matter of density that selection by winnowing and jigging sort to obtain rushing for garbage raw material
Impact crusher；
The artificial separation platform, magnetic separator, rotary screen are sequentially connected, adjacent to pass through conveying band connection between the two；Rotary screen
Oversize connect with winnowing machine by conveyer belt, the screenings of rotary screen passes through conveyer belt and connect with jigging sorting machine.
3. a kind of Changing Urban Garbage into Resources processing system according to claim 1, it is characterised in that: the rubbish revolution is forged
Burning processing system includes:
The drying machine that the organic matter that pretreatment procedure obtains is dried；
Organic matter after drying is crushed to obtain the pulverizer of the organic particle of uniform particle sizes；
The waste paper for the drying that pretreatment procedure obtains and waste plastics are stirred the mixing machine mixed with organic particle；
Mixed organic particle, waste paper and waste plastics are passed through to the molding machine that garbage derivatived fuel is prepared；
The drying machine, pulverizer, mixing machine and molding machine are sequentially connected, adjacent to pass through conveying band connection between the two.
4. a kind of Changing Urban Garbage into Resources processing system according to claim 3, it is characterised in that: the rubbish revolution is forged
Burn processing system further include:
It is mixed in the garbage raw material for obtaining pretreatment procedure with clay, lime stone, iron powder, mixture is crushed
Ball mill；
Ball mill connects head tank by Pneumatic conveying pipeline, and smashed mixture carries out standing deposition in head tank；
Head tank Pneumatic conveying pipeline connects material homogenizer tank, and mixture is homogenized processing in material homogenizer tank；
Material homogenizer tank connects the high-end kiln tail of rotary kiln by pipeline, by the feedstock transportation of homogenizing to rotary kiln；
By the coal injection pipe of the low side kiln hood of fuel oil, lime-ash and garbage derivatived fuel input rotary kiln；
Cooling cooler is carried out to calcined material；
The blender of homogenizing is stirred to clinker after cooling；
Gypsum is added into the clinker after stirring, and to the pulverizer that mixed material is crushed.
5. a kind of Changing Urban Garbage into Resources processing system according to claim 1, it is characterised in that: the after-treatment system
Include:
The flue gas that rotary kiln is generated carries out the electrostatic precipitator of preliminary dust removal, for adsorbing the larger particles in flue gas；
For removing the spray column of sulfur dioxide and hydrogen chloride gas；
The heater that the flue gas that spray column comes out is heated；
It is dusted the sack cleaner of processing to flue gas, pulverized limestone and active carbon are sprayed into sack cleaner for trapping
Heavy metal and two uh English；
The air-introduced machine to pressurize to flue gas；
After being heated to flue gas using the heat exchanger that rotary kiln connects and ammonia is added, for removing nitrogen oxides in effluent
Reductor；
Fume extractor for the gas discharge after restoring；
It is arranged in fume extractor, the flue gas monitored in real time for the content to each pollutant of flue gas in fume extractor exists
Line monitoring system；
The electrostatic precipitator, spray column, heater, sack cleaner, air-introduced machine, reductor, fume extractor are sequentially connected, phase
It is adjacent to be connected between the two by gas pipeline.
6. a kind of Changing Urban Garbage into Resources processing system according to claim 5, it is characterised in that: the after-treatment system
Further include:
Collect the flying dust collecting-tank of rotary kiln flying dust；
For tentatively removing the primary reaction pond of heavy metal in slurries, the chemical agent added in primary reaction pond is sodium carbonate；
For collecting the primary clarifier of the heavy metal scum of primary sedimentation；
For finally removing the secondary reaction pond of heavy metal in slurries, the chemical agent added in secondary reaction pond is heavy metal chelating
Agent；
For collecting the post-precipitate pond of the heavy metal scum of secondary precipitation；
For further removing the filter device of graininess impurity in waste water；
It carries out being dehydrated isolated solid-liquid separator for the heavy metal scum to primary clarifier and post-precipitate pond；
The isolated withering drying machine of heavy metal scum is dehydrated to solid-liquid separator；
The enrichment facility that concentration removes salt treatment is carried out to filtered waste water；
It shrinks to remaining a small amount of high-salt concentrated and is evaporated the evaporating column of crystallization；
The flying dust collecting-tank, primary reaction pond, primary clarifier, secondary reaction pond, post-precipitate pond, filter device, concentration
Device, evaporating column and heat exchanger are sequentially connected, adjacent to be connected between the two by water pump with pipeline；Primary clarifier and secondary are heavy
Shallow lake pond is connected with solid-liquid separator, and solid-liquid separator is separately connected drying machine and primary reaction pond, concentration dress by pipeline
It sets and flying dust collecting-tank is also connected by pipeline, evaporating column also passes through pipeline and connect with electrostatic precipitator.
7. a kind of Changing Urban Garbage into Resources processing system according to claim 3, it is characterised in that: mixed organic matter
Contain (according to mass percent meter) 40% organic matter powder, 20% waste paper and 40% waste plastics in particle, waste paper and waste plastics, and
And the moisture content (according to mass percent meter) of the control garbage derivatived fuel is 9%~13%.
8. a kind of Changing Urban Garbage into Resources processing system according to claim 5, it is characterised in that: sprayed in the spray column
The basic agent entered is specially sodium hydroxide.
9. a kind of Changing Urban Garbage into Resources processing system according to claim 6, it is characterised in that: the sodium carbonate amount
Be 40-70 kilograms of slurries dosage per ton, the heavy metal chelating agent be thiocarbamates, 1-5 kilograms of clear liquid dosage per ton.
10. a kind of Changing Urban Garbage into Resources processing system according to claim 6, it is characterised in that: the heat exchanger is logical
Cross extract rotary kiln a part of high-temperature flue gas, evaporating column is heated, in evaporating column high-salt concentrated shrink rapidly into
Row heat transfer, evaporation, liquid portion are returned in the form of the gaseous state of vapor and carry out purified treatment again in electrostatic precipitator, evaporated
The solid salt arrived all recycles.
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