CN109737420A - A kind of house refuse back-fire type pyrolysis disposing technique and device - Google Patents
A kind of house refuse back-fire type pyrolysis disposing technique and device Download PDFInfo
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Abstract
The present invention relates to field of garbage disposal more particularly to a kind of house refuse back-fire type pyrolysis disposing technique and device, process comprises the steps of: the first step, garbage collection storage；Second step, refuse breaking sorting；Third step, high temperature garbage drying；4th step, refuse pyrolysis generate gas；5th step, gas condensation；6th step, gas purification；7th step, gas recycle；Device includes feed system, material storing box, pulverizer, dehydration device, drying unit, incinerator, dust-extraction unit, tail gas furnace, exhaust gas cleaner and the auxiliary device for connecting above-mentioned apparatus；The technique is directed to the setting of rural garbage feature, it is pre-processed using tertiary crusher, it is pyrolyzed using back-fire type gasification furnace, influence to ecological environment can reach II category alignment request, on ambient enviroment without influence, achieve the purpose that regeneration, efficient, environmental protection, clean energy resource during processing.
Description
Technical field
The present invention relates to refuse disposal installation more particularly to a kind of house refuse back-fire type pyrolysis disposing techniques and device.
Background technique
Residents in rural community is a kind of most valuable regenerated resources.It is reported that one has the town of 20,000 people, it is annual to generate
About more than 8000 tons house refuses；By understanding on the spot and classifying, house refuse ingredient caused by the villages and small towns in Jiangnan is:
The content ingredient of general rural area (In Nanjing) house refuse is as follows:
Ingredient close to the villages and small towns area house refuse in city is:
Consumer waste regenerated utilization and calorific value
These house refuses are largely to empty open incineration in the past, some is landfill, but this processing method is all
It is not thorough, there are many house refuses to be at will placed upside down in the edge of a field, village, ridge, river bank, then float down on the wind, formed filthy
Environment breeds fly mosquito, brings serious pollution to ecological environment.In particular by open incineration (due to low temperature burn,
Pernicious gas but will be generated), directly there are a large amount of harmful toxic matters in the flue gas after burning, is referred to as by the World Health Organization " most malicious
Carcinogen " dioxin is exactly to synthesize in consumer waste incineration.By taking dioxin as an example, its discharge index is every cubic metre
0.1 nanogram toxic equivalent.Such as 100 tons of house refuses of every open incineration, 10 nanogram toxic equivalents will be discharged into air.If
House refuse is pyrolyzed in high temperature (high temperature reaches 800-1000 DEG C or more in burner hearth) using back-fire type gasification furnace apparatus and is discharged,
The dioxin of generation is decomposed in high-temperature region, is converted into permanent gases, then using purification, finally reaches high-quality
Combustion gas can be used as cooking and power generation comes, and thoroughly solve this world-famous puzzle of bring nocuousness toxic gas emission due to directly burning.
Residents in rural community is burnt and is filled using direct combustion at present, and consequence is brought to be:
(1) land occupation damages earth's surface.The garbage disposal in rural area, which is mainly taken, the modes such as stacks on the spot, fills, burns,
So many rubbish are stacked on the spot can occupy a large amount of soils, the production of industrial or agricultural is influenced, surface vegetation is destroyed, seriously affects farming
The growth of object, leads to grain drop in production, has seriously affected the sustainable development of Rural Social Economy.Since villager will generate life rubbish
Rubbish is concentrated topples over into arable land, and long-term sanitary fill not only polluted environment, occupies the soil of large area, also destroys soil
Earth reduces the fertility of soil, leads to grain drop in production.
(2) contaminated soil, water body, atmosphere.The fertility of soil, drop will be reduced after some solid waste garbage loading embeadings
The vigor of low soil.Some solid waste import river meeting polluted source under the action of the external force such as wind, water flow, cause rural area
Shortage of fresh water.The gas being largely harmful to the human body can be generated for the burning of some house refuses, it is serious insulting
Health.Rural people causes sewage muddiness due to toppling over house refuse with intention river and reservoir, the unpleasant scene of stench,
River and reservoir are by serious pollution.
(3) it is detrimental to health.Noxious material and pathogen contained in solid waste can be propagated through various channels
Disease can more cause most of regional mosquitos and flies to breed, and provide condition for the growth of bacterium, and then threaten the health of the mankind.Especially
It is the random air storage of solid waste, is not pocessed, and under conditions of temperature and humidity is suitable for, causes mosquito to wreak havoc, largely
Mosquito breeding polluted people's lives water and food, so every summer disease as caused by refuse pollution is continuous.
(4) for the influence of ecological environment.Some persistence organic pollutants are difficult to degrade in the environment, this kind of waste
It into water body or penetrates into soil, contemporary people and the health of future generations will be seriously affected, ecological environment will also result in for a long time
Immeasurable influence.Residual hazard substance is put aside in animal and plant body, seriously affects the growth of animals and plants, and the ecological balance meets with
Seriously destroyed.When the edible animals and plants accumulated containing noxious material of people, and accumulate in harmful toxic matter in human body, to people's
Liver and nervous system cause to seriously affect.
Traditional garbage incineration technology is all to take the treatment process directly burned.Since China's house refuse is not classified,
Calorific value is low, and water content is high, and rubbish burns not exclusively in furnace, is easy to produce the classes object such as dioxin for having serious harm to human body
Matter.In order to solve this problem, we explore that " clean type residents in rural community is anti-fiery by research for a long time, practice finally
The new combustion technology of formula gasification furnace " equipment.This new process generated gas when making incineration firing, (800 DEG C of furnace high-temperature area
More than) flow through, especially after this high-temperature region allows gas circulating flow to be detained regular hour (5s), make to generate in gas
Organic matter thoroughly burnt decomposition (substances such as dioxin), be really achieved house refuse cleaning burning, energy recovery benefit
Purpose.
Domestic processing small towns house refuse requires that clean and environment-friendly is handled at present.My company develops " clear for many years
Clean type domestic garbage gasification cleaning equipment ", (clean type domestic garbage gasification burns raw furnace, has obtained the multinomial patent of country and specially
Sharp certificate: clean manufacturing biomass dry formula gas-purification furnace, the patent No.: zl201210139003.4)；(a kind of dry-type is more
Grade combustion gas purifying equipment, the patent No.: 201120289372.2)；Its advantage is that:
(1) recycling recycles, and all kinds of agriculture and forestry organic waste materials, life of farmers garbage regeneration are utilized, and becomes new energy combustion
Material, solve due at present use open incineration or landfill disposal method, cause many house refuses with the edge of a field, village, ridge,
River bank is put upside down, is then floated down on the wind, and filthy environment is formed, and is to bring seriously to sources such as raw fly mosquitoes to environment
Pollution；
(2) advanced new technology art harmless treatment is used.When back-fire type gasification furnace is gasified, lead under the high temperature conditions
Overheat chemical reaction, converts gas for house refuse raw material, and burning most easily produces especially under outdoor low temperature condition
" dioxin " gasification purification process processing at high-temperature region, causes " dioxin " difficulty or ease in high temperature incineration to be formed.It is this
The back-fire type gasification clean type equipment of harmless treatment residents in rural community, is a kind of domestic state-of-the-art new technology, through too long
Phase uses, and effect is fine.
(3) on ecological environment without influence；Residents in rural community back-fire type gasification process complies fully with the ecological ring of country
Protect industrial policy.Back-fire type gasification process overall process is: house refuse raw material enter (entering in closed pond) after material storage container,
With driving grab bucket be sent to broken go-no-go area and baking zone (condensing recovery, totally enclosed type are carried out to water vapour), enter back into it is anti-
Internal heat phase gas cleansing phase area (total closed type second level is dripping), this area Ji Bu are carried out under air-proof condition, and nothing is appointed
What waste, atmosphere pollution, sewage discharge, reaches clean manufacturing and corresponding environmental functional requirement, also without any pollutant
Discharge.Mechanical noise mainly reduces noise emission using workshop partition wall, meets environmental requirement about in 70~75dB in workshop.Always
It, its influence to ecological environment of this project can reach II category alignment request and reach during processing on ambient enviroment without influence
To regeneration, efficiently, environmental protection, clean energy resource purpose.
Summary of the invention
Present invention solves the technical problem that being, traditional garbage incineration technology, which is all taken, in the prior art is directly burned
Treatment process.Since China's house refuse is not classified, calorific value is low, and water content is high, and rubbish is burned not exclusively in furnace, is easy to produce
There are the substances such as the dioxin of serious harm to human body.
To solve the above problems, we have proposed a kind of house refuse back-fire type pyrolysis disposing technique and device, the technique
It is directed to the setting of rural garbage feature, is pre-processed, is pyrolyzed using back-fire type gasification furnace, to life using tertiary crusher
The influence of state environment can reach II category alignment request, on ambient enviroment without influence, reach regeneration, height during processing
Effect, environmentally friendly, clean energy resource purpose.
To realize the demand, the present invention is through the following technical solutions to achieve the above objectives: a kind of house refuse is anti-fiery
Formula is pyrolyzed disposing technique device, the first step, garbage collection storage；
Second step, refuse breaking sorting；
Third step, high temperature garbage drying；
4th step, refuse pyrolysis generate gas；
5th step, gas condensation；
6th step, gas purification；
7th step, gas recycle；
In the second step, refuse breaking sorting includes that primary house refuse passes through shredder progress coarse crushing, by tearing
Broken rubbish is sorted by belt feeder input cylinder round sifter, and oversize inputs recursher through belt feeder, and in belt
Machine fills magnetic separator, and a part of metal in rubbish is sorted out；The particle of No. two broken crusher machines about in 50~100mm,
Automatic fraction collector is input to by belt feeder again, sorts out a part of metal again by magnetic separator, then by metal detector and
Sorting unit sorts out non-ferrous metal a part of in rubbish, is input to tertiary crusher by belt feeder, tertiary crusher
Particle is most of in 30~60mm, is transported to feed bin using belt feeder；The screenings of cylinder round sifter is transported to through belt feeder
On gravity separation belt feeder, 2G material inputs feed bin by belt feeder；3G material is transported by belt feeder input hopper waiting, and in skin
The metal in screenings is sorted out with magnetic separator is filled on machine；
In the third step, dry preceding moisture content of material 60%, moisture content 30% after drying；The dry device used
It is three backhaul dryers；
In 4th step, refuse pyrolysis is using back-fire type gasification furnace apparatus.
The present invention also provides a kind of house refuse back-fire type be pyrolyzed disposal plant, it is characterised in that: including feed system,
In material storing box, pulverizer, dehydration device, drying unit, incinerator, dust-extraction unit, tail gas furnace, exhaust gas cleaner and connection
State the auxiliary device of device；The auxiliary device includes but is not limited to helical feed flood dragon, water pump, blower, magnetic separator.
More specifically, the screenings of the cylinder round sifter includes stone, glass dregs, iron, steel ball, mud and plastics, paper, cloth
Deng particle is about in 30~60mm；The 2G material includes that paper, cloth, plastics etc. can utilize material；The 3G material includes stone
Son, iron, glass dregs etc..
More specifically, the three backhauls dryer is made of inside and outside three layers of cylinder, wet stock is sent by belt conveyor
Wet stock is sent into internal layer cylinder by feed auger, feed auger, and by inner cylinder to middle cylinder inside dryer, middle cylinder is dry to outer cylinder
Afterwards, dry material is discharged by discharging spiral, outer cylinder tail portion cyclone collection；Hot wind is entered by internal layer cylinder, from outer cylinder tail
Portion's discharge；Cylinder is provided with forward shovelling plate, under so that material is constantly taken up and is spilt in cylinder turning course, makes it sufficiently and thermal current
Contact.
More specifically, the charcoal that the back-fire type gasification furnace apparatus generates the air entered with pyrolytic layer reacts, it is special
It is not and is evaporated material water content and reacts, generates carbon dioxide, and then the carbon dioxide generated is converted into an oxidation again
Carbon forms high-temperature region, promotes zoneofoxidation reaction more violent, the hydrocarbon of material is made to be converted into carbon monoxide, titanium dioxide
The mixed gas such as carbon, hydrogen, methane.A kind of house refuse back-fire type pyrolysis disposing technique and device provided by the invention, rubbish
The process flow of rubbish processing is described as follows:
(1) for the features such as residents in rural community building waste is more, metal is more, bottle is more, cinder is more, match in pretreatment
The screening plants such as rotary screen, magnetic separator, metal sorting machine are set.
(2) feature for residents in rural community duds, more than stalk, in pretreatment using strong power hydraulic breaker into
Row is broken, allows the house refuse of rural area complexity to achieve the purpose that broken.
(3) for the feature that residents in rural community kitchen object is few, dry matter is few, drying is squeezed in pretreatment
It equipment (Major Natural dry) and is handled using fuel gas that this technique itself generates come heating, drying, makes life rubbish
Rubbish reaches drying, and (water content solves the problems, such as burning not cinder into back-fire type furnace gas in 25-30% or less)；If in processing city
When city's house refuse kitchen object is more, moisture content is high, it should increase and squeeze drying equipment to be handled.
(4) it is directed to residents in rural community complicated component, is not easy the difficult point burned, in order to reduce the content of chlorine in rubbish,
When developing clean type back-fire type gasification purifying incinerator, using heat combustion-supporting burning facility (using this technique itself generate can
Combustion gas body), it allows in-furnace temperature to form high-temperature region (reaching 800-1000 DEG C or more), fires house refuse in furnace adequately
Generated gas pernicious gas (especially dioxin) after the flowing of high-temperature region is unconditionally survived when burning, while gasifying, finally
Reach clean type burning.
The advance of house refuse back-fire type pyrolysis disposing technique and device technique technology is compared with domestic and international similar technique
It has the advantage that
(1) fresh food garbage into factory is pre-processed using tertiary crusher, 30m3- can be sealed and stored after tertiary crushing
The rubbish of 50m3 or more.It is general to use gasification, no mosquitos and flies and evil on the day of same day rubbish for the few feature of residents in rural community amount
Odour generates and discharge, reaches clean type processing.
(2) back-fire type gasification furnace is formed high-temperature region, is burnt under normal circumstances using heating burning-assist incinerator, when refuse pyrolysis
Temperature is burnt up to 800 DEG C~1100 DEG C, and rubbish thoroughly obtains gasification burning in furnace, and clinker ignition loss is conducive to other less than 3%
The material that difficulty or ease are burned, thoroughly reach a high temperature processing.
(3) gas caused by clean type back-fire type gasification furnace uses chilling falling temperature technique in purification, and gas is from 800
When DEG C being down to 120 DEG C -150, the regeneration criteria range of dioxin is avoided, the discharge of dioxin is greatly reduced；Meanwhile
It is generated in purification gas processing without secondary pollutions such as flying dusts, is really achieved clean type burning.
House refuse back-fire type is pyrolyzed the hallmark of disposing technique and device technique technical matters route:
(1) this technique uses back-fire type gasification and pyrolysis new technology, especially using heating burning-assist combustion technology, in gas mistake processed
Medium calorific value gas is pumped in tar filter in journey and carries out deep purified treatment, and recirculated water is taken to remove in process of production
It is recycled in chimney, the water of exclusion is without any pollution；The environmental requirement of country is complied fully with, house refuse is in combustion
Problem without secondary pollution.It has the advantage that
(2) clean type.This technique uses twice combustion method, and twice aeration equipment is equipped in furnace, and strengthen burning temperature makes
Reducing zone temperature rises to 800-1100 DEG C or more, the gas and tar for generating house refuse in pyrolytic reaction, at high temperature
The strong solution of tar being become permanent gases to burn again, no gas emission, without sewage discharge, tar burns again after passing through trapping,
Comply fully with the environmental regulations of country.It optimizes current other house refuse equipment and is washed with water after punching and carried secretly in brought sewage
Have the sewage such as a large amount of tar, including phenol, naphthalene, benzene, styrene dye object discharge, such as using other incinerators because rural area again unconditionally come
Purified treatment, have to be emitted in pond or naturally osmotic into soil, secondary new problem of environmental pollution will be will cause.
(3) it just operates.This equipment set structure is simple, easy to operate, and all devices that need to often open all are provided with to be opened fastly
Device；All places that need to often overhaul are provided with quick-opening device, can open or repair at any time, are well suited for rural personnel and use, whole
A purification system No leakage point, operational security are reliable.
(4) range is wide.This (equipment) can according to country life daily output of refuse amount it is how many depending on；Its applicability is various
House refuse material etc. really solves the problems, such as agriculture and forestry organic waste material resource reutilization.
(5) small investment.This equipment unit reasonable price, it is cheap, it is a kind of economical and practical new process equipment, it is very suitable
Answer the processing of residents in rural community.
The beneficial effects of the present invention are: the technique is directed to the setting of rural garbage feature, is carried out using tertiary crusher
Pretreatment, is pyrolyzed, the influence to ecological environment can reach II category alignment request, to ambient enviroment using back-fire type gasification furnace
Without influence, achieve the purpose that regeneration, efficient, environmental protection, clean energy resource during processing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.It is clear that the accompanying drawings in the following description is of the invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the device of the invention schematic diagram；
Fig. 2 is three-cylinder drier process flow diagram of the invention；
In figure, feed system 1, material storing box 2, pulverizer 3, dehydration device 4, drying unit 5, blower 6, incinerator 7, dedusting
Device 8, tail gas furnace 9, pump 10, exhaust gas cleaner 11, concentration equipment 12；Solid line with the arrow indicates gas conveying direction；Hot gas
Import A, outer layer drying cylinder B, middle layer drying cylinder C, internal layer drying cylinder D, material outlet E, waste gas outlet F, material inlet G.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of house refuse back-fire type pyrolysis disposing technique and device, by taking day handles 100 tons of life fresh food garbage as an example:
The first step, garbage collection storage；
Second step, refuse breaking sorting；
Third step, high temperature garbage drying；
4th step, refuse pyrolysis generate gas；
5th step, gas condensation；
6th step, gas purification；
7th step, gas recycle；
Refuse breaking sorting part illustrates: a small amount of (the about 100 tons or so) domestic rubbish disposals in rural area are more difficult at present
A difficult problem is mainly measured less, is complex in composition, processing equipment is uneven, lacks technical force etc..In view of the above-mentioned problems, we into
It has gone and has groped and repeatedly practice, main that a coarse crushing is carried out by shredder using (1) primary house refuse, the main handle of purpose
Bulky Waste and package, clothes, cotton-wadded quilt in rubbish etc. are torn up, and are sorted and are crushed for lower road and prepare.(2) by tearing up
Rubbish, by belt feeder input cylinder round sifter sorted, oversize inputs recursher through belt feeder, and in belt feeder
Magnetic separator is filled, a part of metal in rubbish is sorted out.The particle of second-time breakage crusher machine about in 50~100mm, then
Automatic fraction collector is input to by belt feeder, sorts out a part of metal again by magnetic separator, then pass through metal detector and is divided
Screening device sorts out non-ferrous metal a part of in rubbish, is input to tertiary crusher, of tertiary crusher by belt feeder
Grain is most of in 30~60mm, is transported to feed bin using belt feeder.(3) cylinder round sifter screenings (stone, glass dregs,
The particle of iron, steel ball, mud and plastics, paper, cloth etc. is about in 30~60mm) it is transported on gravity separation belt feeder through belt feeder,
2G material (paper, cloth, plastics etc. can utilize material) inputs feed bin by belt feeder.3G material (stone, iron, glass dregs etc.) is by belt
Machine input hopper waiting is transported (about between 1%~5%), and fills magnetic separator to the metal in screenings point on belt feeder
It elects.
High temperature drying part illustrates: important technological parameters:
2 names of material: house refuse is ground into 4 centimeters of particles below by sorting and three-level；
2. moisture content 60% before dry, moisture content 30% after drying；
3 treating capacities: 6 ton/hours of wet basis material；
4 drying sources: start one hour heat source and use firewood or liquefied gas, gasification furnace is used after one hour.
5. drying mode: forward flow operation technique, continuous feed, continuous discharge.
Lectotype selection and conceptual design foundation:
1. removing moisture content: by 6 ton/hours of inlet amount, first water content 60%, whole water content 30% goes water: 6-6 × (1-
60%)/(1-30%)=2.43 ton/hour.
2. heat dissipation: based on every 10,000 kilocalorie heat removal 10kg water, institute's heat dissipation can be about 240 × 104Kcal/h, Ying Caiyong
2400000 kilocalorie hot-blast stoves.
3. air quantity is estimated:
Air quantity=heat ÷ temperature ÷ 0.24 (erg-ten=0.24 card)
2400000 ÷, 350 ÷, 0.24 ≈ 28571m3/h (350 DEG C of inlet air temperature).
It is calculated according to above, it is big using three rotary roller dryer thermals efficiency height, production capacity, it is suitble to the drying of house refuse.
Barrel dliameter takes Φ 2950, can meet ventilation quantity and require, and 10.57 meters of cylinder overall length.
Three backhaul dryer working principles
Three backhaul dryers are made of inside and outside three layers of cylinder, and wet stock is sent into feed auger by belt conveyor, into
Expect that wet stock is sent into internal layer cylinder by spiral, by inner cylinder to middle cylinder inside dryer, middle cylinder to outer cylinder it is dry after, dry material by
The spiral that discharges discharge, outer cylinder tail portion cyclone collection.Hot wind is entered by internal layer cylinder, is discharged from outer cylinder tail portion.In cylinder
Contact it sufficiently with thermal current under so that material is constantly taken up and is spilt in cylinder turning course equipped with forward shovelling plate, to improve
Drying efficiency makes material reach drying effect.
Drying equipment advantage:
Investment is the 1/6 of external imported product needed for 1 equipment；
Self heat preservation hot efficiency of 2 cylinders is up to 70% or more (traditional monotubular dryer thermal efficiency is only 35%), improves heat
50% or more efficiency；
3 reduce occupied area 50% or so than monotubular dryer, and construction investment reduces by 50% or so, and power consumption reduces by 60%；
More than 4 kinds of circumferential lifting combination distributions, Effective Regulation drying time, good drying effect；
5 can require easily to regulate and control desired whole moisture content index according to user；
6 use variable frequency regulating speed control mass flow；
7 air outlet temperatures are low, and cleaner is long using the time, can continuous production progress next procedure；
Equipment energy consumption:
Whole installed capacity: 110KW/h, each section power are as follows:
1. three backhaul main dryings: 4 × 5.5KW (frequency control)；
2. feed screw: 4KW (frequency control)；
2 air-introduced machines: 75KW；
3 Blowing stoppers: 3KW；
4 feed belt machines: 3KW
5 discharging belt conveyers: 3KW
(4) house refuse drying equipment purchasing price inventory:
Refuse pyrolysis, gas cleaning section explanation:
1, back-fire type gasifies furnace apparatus: the characteristics of in order to adapt to residents in rural community raw material, this technology uses back-fire type gas
Change furnace apparatus special technology, the charcoal that generates with pyrolytic layer of air entered made to react, especially with to be evaporated material aqueous
Part reacts, and generates carbon dioxide, and then the carbon dioxide generated is converted into carbon monoxide (CO+H2) again, forms high-temperature region,
Promote zoneofoxidation reaction more violent, the hydrocarbon of material is made to be converted into carbon monoxide, carbon dioxide, hydrogen, methane etc.
The advanced technology of mixed gas, especially this technique are equipped with special device in furnace, make to form aerodynamic field in furnace, increase
The disturbance of gas ensure that air is mixed with the good of material, enhance the combustion intensity of gasification zone.The present apparatus allows gas at this
There are enough residence times in space, cracks the tar in mixed gas further, generates permanent small molecule combustible gas
Body reduces the tar content in combustion gas, increases the calorific value of combustion gas, at the same time, makes generated dioxin in high-temperature region
It is solved, becomes permanent gases, reduce influence of the pernicious gas to environment.
2, purification system equipment and technology: pass through years of researches and test, grasped the temperature in back-fire type gasification
The data having a significant impact to tar generation rate.Under normal circumstances, the tar rate about 30% obtained in 400 DEG C of low temperature pyrolyzers,
The tar rate about 18-20% generated in 500 DEG C of pyrolysis；The tar rate about 15% generated in 700 DEG C of pyrolysis.With gasification temperature
When rising to 800 DEG C -900 DEG C of degree, the tar in gasification obtains ideal cracking, especially makes generated
A part of tar is cracked into small molecule permanent gases, improves the calorific value of combustion gas, to be effectively reduced the coke in gas
Oil content fundamentally mitigates and reduces the burden of purification system；Another uses cleaning equipment eddy flow, chilling, collision, delays
The system purification new process that the new technologies such as stream, absorption are integrated, purifies the tar content in biological fuel gas further.
For this purpose, " clean manufacturing biomass dry gas-purification producer [ZL200720043426.0] " has been invented by company, fundamentally
Solve the problems, such as that dioxin seriously pollutes environment.
3, eco-environment technology: firstly, daily house refuse is stayed into gas-tight silo, gas-tight silo bottom subordinate is entered after factory
There is house refuse liquid collecting pit, and the house refuse liquid of collecting pit is pipelined in clarifier-tank and is handled；Secondly, life
Rubbish carries out go-no-go and is crushed, and the material special delivery such as bottle, stone gone out to go-no-go is at landfill；Third, house refuse enters anti-fire
After formula gasification furnace, raw material is made to rise to 800-1100 DEG C or more in reducing zone temperature, generates house refuse in pyrolytic reaction
The strong solution of tar is become permanent gases at high temperature and burnt again by gas and tar；Wood under gas is caught by purification system is burnt
(wood vinegar is biomass water solubility oxygenatedchemicals obtained in pyrolytic process, is the mixed of a variety of organic acids for oil and wood vinegar
Close liquid.Have the effects that sterilize, controls worm, is disease-resistant, promoting plant growth.It can be used as green nuisance free pesticide, micro- fertilizer use, can mention
High crop yield and quality, and can degrading pesticide residues.Can be used as pure natural insecticide, natural plants growth regulator and
Deodorant etc. has application field wide), storage pool is entered after centralized collection, goes out to sell as product, is sold to the waterproof material of profession
Factory, pitch factory use；Fourth, the recirculated water in collected house refuse liquid and purification system carries out second level " nanofiltration "
Processing, treated, and water is recycled；Fifth, after the burning of back-fire type gasification furnace, (such as 100 tons of house refuses are through burning
Afterwards, 15~20 kilograms of lime-ash), special delivery is used to Bricks and Tiles Plant；Sixth, mechanical noise is main to use about in 70~75dB in workshop
It reduces noise and meets the requirements in workshop next door；Seventh, clean manufacturing in factory, it is ensured that worker's Production environment quality is preferable, especially
Means of transport, storage site are dry, clean, must not mix poisonous substance, contaminated articles and product and deposit mixed fortune, workpeople An Zhaowei
Carded sliver part requires health service.
In short, this project whole process without sewage discharge, discharging without tar and wood vinegar, no noxious gas emission etc. is complete
The environmental regulations for meeting country entirely can reach environment influence, be able to satisfy 2 category alignment requests, be that a kind of castoff regenerative utilizes, is high
Imitate utilization, ecological, environmental protective, clean energy resource engineering.
Gas recycles explanation
On the one hand gas caused by house refuse raw material is pipelined to drying oven combustion by air accumulator deposit
It burns, heat source is continually provided, the energy sources of drying oven are solved；On the other hand extra combustion gas is used to generate electricity personal.
Cost-benefit analysis
1, cost
(1) cost of labor: refuse breaking drying workshop section, daily one class, 3 people of per tour；Refuse gasification power generation workshop section, daily three
Class, 3 people of per tour；Standby 4 people of class, totally 16 people.5000 yuan/month per capita.
(2) electricity charge: total installed capacity power about 800kw, operating factor 0.60, electricity Unit Price 0.63/kwh.
(3) equipment depreciation: depreciation in 10 years is pressed.13000000/10 years=1,300,000/year.
(4) maintenance cost: 20 yuan/t.
Day processing 100t house refuse cost structure table:
2, income:
(1) crude waste moisture content 55%, calorific value 1500cal/kg.
(2) msw water content 30% after drying, calorific value 2343cal/kg.
(3) gasification furnace transformation efficiency 70%, the flammable gas calorific value 1500cal/m of output3。
(4) combustible gas passes through the generating efficiency 30% of internal combustion engine.
(5) gasification furnace gas production calculates: Q=2343cal/kg*70%/1500cal/m3=1.09m3The dry rubbish of/kg.
(6) generated energy calculates: 1t does garbage power amount=1000kg*1.09m3/kg*1500cal/m3* 30%/860cal/
Kwh=570kwh
(7) 1t crude waste generated energy=570kwh*1500/2343=365kwh.
(8) 1t crude waste gene-ration revenue=365kwh*0.65 member/kwh=237 member.
A kind of house refuse back-fire type pyrolysis disposing technique provided in this embodiment and device, the technique are directed to rural area rubbish
The setting of rubbish feature, is pre-processed using tertiary crusher, is pyrolyzed using back-fire type gasification furnace, the influence to ecological environment
II category alignment request can be reached, on ambient enviroment without influence, reach regeneration, efficient, environmental protection, cleaning energy during processing
The purpose in source.
Claims (5)
1. a kind of house refuse back-fire type is pyrolyzed disposing technique, it is characterised in that: the following steps are included:
The first step, garbage collection storage；
Second step, refuse breaking sorting；
Third step, high temperature garbage drying；
4th step, refuse pyrolysis generate gas；
5th step, gas condensation；
6th step, gas purification；
7th step, gas recycle；
In the second step, refuse breaking sorting includes that primary house refuse passes through shredder progress coarse crushing, by what is torn up
Rubbish is sorted by belt feeder input cylinder round sifter, and oversize inputs recursher through belt feeder, and fills in belt feeder
Magnetic separator sorts out a part of metal in rubbish；The particle of No. two broken crusher machines about in 50~100mm, then by
Belt feeder is input to automatic fraction collector, sorts out a part of metal again by magnetic separator, then passes through metal detector and sorting
Device sorts out non-ferrous metal a part of in rubbish, is input to tertiary crusher, the particle of tertiary crusher by belt feeder
Major part is transported to feed bin using belt feeder in 30~60mm；The screenings of cylinder round sifter is transported to gravity through belt feeder
On sorting belt conveyor, 2G material inputs feed bin by belt feeder；3G material is transported by belt feeder input hopper waiting, and in belt feeder
Upper dress magnetic separator sorts out the metal in screenings；
In the third step, dry preceding moisture content of material 60%, moisture content 30% after drying；The dry device used is three
Backhaul dryer；
In 4th step, refuse pyrolysis is using back-fire type gasification furnace apparatus.
2. a kind of house refuse back-fire type is pyrolyzed disposal plant, it is characterised in that: including feed system, material storing box, pulverizer, take off
Water installations, drying unit, incinerator, dust-extraction unit, tail gas furnace, exhaust gas cleaner and the auxiliary dress for connecting above-mentioned apparatus
It sets；The auxiliary device includes but is not limited to helical feed flood dragon, water pump, blower, magnetic separator.
3. house refuse back-fire type as described in claim 1 is pyrolyzed disposing technique, it is characterised in that: the cylinder round sifter
Screenings includes stone, glass dregs, iron, steel ball, mud and plastics, paper, cloth etc., and particle is about in 30~60mm；The 2G object
Material includes that paper, cloth, plastics etc. can utilize material；The 3G material includes stone, iron, glass dregs etc..
4. house refuse back-fire type as described in claim 1 is pyrolyzed disposing technique device, it is characterised in that: three backhaul is dried
Dry machine is made of inside and outside three layers of cylinder, and wet stock is sent into feed auger by belt conveyor, and wet stock is sent by feed auger
Internal layer cylinder, by inner cylinder to middle cylinder inside dryer, after middle cylinder to outer cylinder is dried, dry material is discharged by discharging spiral, outer cylinder
Tail portion cyclone collection；Hot wind is entered by internal layer cylinder, is discharged from outer cylinder tail portion；Cylinder is provided with forward shovelling plate, makes object
Under material is constantly taken up and spilt in cylinder turning course, contact it sufficiently with thermal current.
5. house refuse back-fire type as described in claim 1 is pyrolyzed disposing technique device, it is characterised in that: the back-fire type gas
Changing furnace apparatus makes the charcoal that generates with pyrolytic layer of air entered react, especially be evaporated the generation of material water content instead
It answers, generates carbon dioxide, and then the carbon dioxide generated is converted into carbon monoxide again, form high-temperature region, zoneofoxidation is promoted to react
More acutely, the hydrocarbon of material is made to be converted into the mixed gas such as carbon monoxide, carbon dioxide, hydrogen, methane.
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