CN1888534A - Method for electric generating utilizing stalks mixed burned with city life refuses - Google Patents
Method for electric generating utilizing stalks mixed burned with city life refuses Download PDFInfo
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- CN1888534A CN1888534A CNA2006100148729A CN200610014872A CN1888534A CN 1888534 A CN1888534 A CN 1888534A CN A2006100148729 A CNA2006100148729 A CN A2006100148729A CN 200610014872 A CN200610014872 A CN 200610014872A CN 1888534 A CN1888534 A CN 1888534A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The invention relates a method of generating by using mixed combustion of stalks and municipal house refuse. The heat energy produced by the mixed combustion of the stalks and the municipal house refuse in the refuse burner is coverted into the generating energy by a boiler, a turbine and a generator, so as to supply the power for cities. The proportion of the stalks and the house refuse in their mixed combustion must be adjusted continually according to the differences of refuse water ratio and dust composition. When the combustion temperature in the burner is in the range of 870-1200 deg. C, the combustion can be fully burned and the combustion product can be discharged up to the standard.
Description
Technical field
The present invention relates to a kind of method of utilizing farmland stalk and domestic waste mixed combustion generating.
Background technology
Along with high speed development of national economy, prices such as the oil of China, coal also were constantly to rise violently in recent years, researched and analysed to show that China's using energy source prospect allows of no optimist.At above situation, need on the one hand to save energy and reduce the cost, improve the primary energy utilization ratio, on the other hand, needing as early as possible, exploitation substitutes new forms of energy.In conjunction with China's national situation, accelerate the development and use of regenerative resource, become the only way of China's energy strategy development.On February 28th, 2005, the National People's Congress has approved " regenerative resource method ", goes into effect from January 1st, 2006, and the development of regenerative resource has been included in legal track.On November 7th, 2005, international regenerative resource conference is also in China's Held in Beijing, for our study with use for reference countries in the world Renewable Energy Development experience and the practice provides good opportunity, will effectively promote the development of China's regenerative resource.Regenerative resource comprises water energy, wind energy, solar energy, biomass energy, geothermal energy and ocean energy etc.
International Energy Agency studies show that, stalk is a kind of good clean reproducible energy, and its average sulfur content has only 3.8 ‰, and the average sulfur content of coal reaches 1% approximately.After measured, the stalk calorific value is about 15000 kilojoule per kilogram, is equivalent to 50% (the stalk constituent analysis sees Table 1) of standard coal.If according to 200,000 tons of annual burning straws, 1.2 hundred million kilowatt hours of generating electricity, the procurement price measuring and calculating that stalk per ton is 100 yuan will bring along farmers to increase income more than 2,000 ten thousand yuan, can also provide industry and domestic heating simultaneously.Straw power generation not only has favorable economic benefit, also has good ecological benefits and social benefit.
Agricultural crop straw is as a kind of byproduct of agricultural production, and output is big, distribution is wide, also is important living resources simultaneously.According to statistics, China produces 6.2 hundred million tons of agricultural crop straws per year, and its quantity is equivalent to more than 50 times of the northern grassland amount of beating the grass, and the resource owning amount occupies first place in the world.China between 2000～calendar year 2001 the stalk total amount will show a rising trend, reached 7.26 hundred million tons by 2010.
Nearest statistics shows, 30% as agricultural fuel in China's annual output agricultural crop straw, 25% as feed, 2～3% usefulness workmanship sideline production raw materials for production, 6～7% direct returning to farmland, also have 35% about 2.2 hundred million tons of residue stalks not to be used appropriately, wherein the overwhelming majority is caused a large amount of wastings of resources by peasant's on-site incineration.The open-air burning of stalk destroyed soil texture, soil become harden, and be easy to initiation fire, and the smog of generation is contaminated environment not only, also influences traffic, leads to a disaster, and once repeatedly causes near socked-in.From the angle of sustainable development, stalk is the renewable and clean energy, will play an important role in the energy resource structure in future.
China is as a large agricultural country, and staple food crop is wheat, corn, paddy rice, soybean, cotton, oil plant, potato class, Chinese sorghum, oily certain herbaceous plants with big flowers etc., and all kinds of stalk resources are very abundant, and other has available resources such as a large amount of fruit tree branches and wetland reed weeds.Though some stalk is used for also field and greenfeed, also have most effectively to utilize, processing of these residue stalks have become one of difficult problem of governments at all levels in recent years.Build stalk steam power plant engineering, must bring the increase of local fiscal revenues, create more jobs.Not only can eliminate the smoke pollution that produces because of the on-site incineration stalk, and stalk is used as resource, also can increase farmers' income.Like this, just combining well solving the energy (electric energy, heat energy) shortage, environmental protection and increasing peasant income three big problems, improve the investment climate effectively, is a good job of benefiting the nation and the people.
The mankind enter 21 century; along with manifesting day by day of a series of ecological environment problems; circular economy concept is rooted in the hearts of the people; the strategy of sustainable development has become the important economic model of China; reform and opening-up makes China's economy obtain develop rapidly; government shows great attention to environmental issue; country clearly proposes " will accelerate to build resource-conserving; friendly environment society; greatly develop recycling economy; strengthen the environment protection; protect natural, ecological conscientiously, conscientiously solve the outstanding environmental problem that influences socio-economic development, particularly serious harm people ' s health in Eleventh-Five Year Plan.”
The collection of China's domestic waste, accumulating and handling problem more and more are subject to people's attention, domestic waste application technology as the second resource and approach are more and more, present processing mainly contains modes such as landfill, compost, burning, and the waste incineration and generating electricity processing has the inaccessiable resource of other modes, minimizing and innoxious.Rubbish burns under the high temperature about 950 ℃, can carry out aseptic and decomposing harmful substances, and the residue after the burning has only 10%～30% of original volume, and the heat that waste incineration produces is converted into electric energy again and serves society.For adapting to the domestic waste disposal pressure that urbanization development need and alleviation increase day by day, in conjunction with a large amount of preferential policy supports that country gives garbage power, the existing many cities of China begin or the large-scale municipal solid waste incinerator of plan construction in recent years.
But,, cause bad, the problems such as efficiency of combustion is low, fire box temperature is low, smoke components complexity of wind permeability that when the burner hearth internal combustion, often run into a time because China's domestic waste calorific value is low at present, moisture content is high, dirt content is big, complicated component.Be easy to generate harmful substances such as dioxin behind the incineration firing, thoroughly decompose harmful substance such as dioxin needs flue gas to stop more than 2 seconds down for 850 ℃ in temperature.Under the bad situation of incineration firing operating mode, it is combustion-supporting suitably to spray into fuel oil, to reach above-mentioned environmental protection purpose, has wasted other resource like this in disposal of refuse.
Summary of the invention
Main purpose of the present invention is to provide the method for a kind of farmland stalk and domestic waste mixed combustion generating.Producing electric energy supply resident productive life when handling resident's productive life discarded object uses, mixed combustion can remedy separately the drawback of burning separately mutually, can effectively heat energy be transformed and produce electric energy, and guarantee the stability of burning and the qualified discharge of pollutant, meet the policy of developing a circular economy.
For achieving the above object, the present invention is achieved in that
The method of utilizing stalks mixed burned with city life garbage power of the present invention is with farmland stalk and domestic waste mixed combustion.
The mixed combustion in incinerator when farmland stalk and domestic waste, the heat energy of generation changes into the generating energy by boiler, steam turbine and generator, supply city electricity consumption.Stalk constantly adjusts according to the different of msw water content and dirt composition with the domestic garbage mixing combustion ratio.Different and supporting steam turbine and generating equipment selection standard is different according to the design of incinerator, the ratio of stalk in the comburant of described mixed preparing is 0.01% to 80%, incinerator internal combustion temperature is 870 ℃ to 1200 ℃ scopes, and the comburant sufficient combustion, the combustion product qualified discharge.
Preferable, the ratio of stalk in the comburant of described mixed preparing is 10% to 30%, incinerator internal combustion temperature is 900 ℃ to 1100 ℃ scopes, and the comburant sufficient combustion, the combustion product qualified discharge.
The invention provides a kind of technology and the method for the stalks mixed burned with city life garbage power of a kind of farmland.This method will produce following effect:
1, in incinerator, realize the crop straw burning generating, provide a kind of cleaning new energy utilize method in, can save and build the investment of crop straw burning power plant.
2, the problem of environmental pollution that solve the stalk air storage, burns and bring.
3, improve the incineration firing fire box temperature, reduce the discharging of dioxin in the incineration flue gas.Mix and burn the rear hearth temperature about 950 ℃, improve about 100 ℃ than the independent ignition temperature of house refuse.
4, improve incineration firing operating mode stability.Domestic waste composition more complicated, and be subjected to the influence in zone and season bigger, and the height of the height of msw water content and dirt content will directly influence rubbish burning effect.The mixing burning and then can solve the combustion problem that msw water content is high and dirt content height brings of farmland stalk.
5, reduce the hot burn decrement rate of slag.The burning of mixing of stalk makes that the gas permeability of rubbish in stove is relatively good, and wind of boiler more successfully enters in the stove combustion-supporting, makes incineration firing efficient improve, thereby reduces the hot burn decrement rate of slag.
In sum, it is necessary fully carrying out crop straw burning generating and burning city domestic garbage power generation project at present, with stalk and rubbish mixed combustion generating, to reach utilization of waste as resource and two mutual supplement with each other's advantages.
Description of drawings
Fig. 1: utilize stalks mixed burned with city life garbage power system and device figure.
The specific embodiment
Embodiment 1:
A kind of system that utilizes stalks mixed burned with city life garbage power of the present invention as shown in Figure 1, mainly comprises
1, stalk and rubbish storing and transporting system: main effect is that stalk and domestic waste collection, accumulating to burning electricity generation factory material storage are cheated, and is stand-by.
2, CIU: the stalk and the rubbish that will store up in the hole are sent into incinerator, and the combustion components of mixed material is fully burnt and changed into heat energy in incinerator, and not flammable component changes into lime-ash discharging back collection and treatment.
3, energy conversion system, heat energy changes into electric energy: the heat energy that the mixed material burning produces absorbs into high-quality steam by WATER AS FLOW MEDIUM, and the steam pushing turbine drives generator for electricity generation, realizes the conversion of heat energy to electric energy.
4, smoke processing system: the flue gas that mixed combustion produces is collected, carried out purified treatment, qualified discharge.
5, cinder resource treatment system: the lime-ash that mixed combustion produces is collected, carried out recycling treatment.
Main circulation technology flow process: resident's productive life produce stalk and rubbish-→ stalk and domestic waste collection accumulating to burning electricity generation factory-→ be discharged into stalk rubbish material pit-→ drop into according to a certain percentage incinerator-→ mixture the incinerator internal combustion produce heat energy-→ WATER AS FLOW MEDIUM absorb heat energy become steam-→ steam in superheating system, continues absorbing heat improve the qualified steam of Steam-water Quality-Steam-water Quality by steam pipeline enter the acting of steam turbine pushing turbine-→ steam turbine drive the generator generating and finally change into electric energy-→ export by transformer and conveying circuit and to satisfy resident's productive life needs.
In garbage incinerating power plant, implement this invention, need not invest specially and build the mixed burning generating that stalk and rubbish just can be realized in the power plant, can save the writing investment.Intermediate experiment has been passed through in farmland stalk and domestic waste mixed combustion generating, enters and implements the operation phase, and every service data and index all reach good effect.
Embodiment 2:
Table 1: stalk constituent analysis
According to the stalk constituent analysis of table 1, different with rubbish, the ratio of being added is different.
Along with the raising of people's living standard, refuse thermal value also can improve constantly, thus burning electricity generation equipment generally at the refuse thermal value of when design reference than present height.In the rubbish quality preferably the time, as leaf, paper, plastic garbage, mix on a small quantity and burn wheat stalk, rice straw etc., improve refuse thermal value, stalks mixed burned ratio is generally at 0.01%-10%, and this moment, stove internal combustion temperature generally remained on about 1000 ℃-1200 ℃.Thereby guarantee the running of burning electricity generation equipment high efficiency rate, can also improve the rubbish burn-off rate simultaneously, reduce the hot burn decrement rate of cinder, obtain higher discharge standard.
Embodiment 3:
Msw water content, dirt content and component of refuse are the factors that mainly influences incineration firing.When the rubbish quality is bad, be exactly that rubbish dirt content is big or moisture content is higher or both have concurrently, house refuses such as for example rotten rotten vegetable leaf, dust particle, swill in general.Dirt can increase the density of rubbish, can cause very big pressure to wind inlet of fire grate like this, enter burner hearth thereby influence a wind, wind throttle opening generally about 90%, sometimes in addition aperture in 100% demand that still can not satisfy air quantity fully.Adopt stalk to mix in right amount to burn rubbish and can effectively deal with problems, according to the stalks mixed burned ratio of dirt amount size generally about 10% to 30%.Stalk and rubbish are mixed in the incinerator, because the supportive of stalk is good, can improve the bulkiness of whole mixed combustion thing, one time wind is combustion-supporting with entering burner hearth very smoothly, this moment, the main air intake aperture was generally at about the 30% one 50% burning needs that can satisfy stove internal combustion thing, ignition temperature generally remains on 900 ℃-1100 ℃, thereby guarantees efficient fully burning and qualified discharge.
Embodiment 4:
The moisture content of part rubbish is very high, dirt content is very big and the rubbish combustible component is lower etc. is unfavorable for that the phenomenon of burning occurs simultaneously, the house refuse in rainy season particularly, can bring that refuse thermal value is low, the not enough problem of primary air flow, might exert an influence to the abundant degree of fire box temperature, incineration firing in when burning and fume emission index etc., it is combustion-supporting to replenish fuel oil when being necessary.The mixed-fuel burning proportion of stalks mixed burned house refuse reaches 60% to 80% in short time, cotton stalk and maize straw etc. can be given full play to the characteristics of the good and high heating value of its bulkiness, so the corresponding raising of heat value of mixture, ignition temperature generally are controlled at 870 ℃-1000 ℃.Save fuel oil on the one hand, fully guaranteed the abundant burning of mixture and the qualified discharge of flue gas on the one hand.
The method of farmland provided by the invention stalks mixed burned with city life garbage power meets national environmental standard and requirement, and the combustion product gases discharge index reaches European Union's standard.China's biomass energy resource is very abundant, and stalk resource is a kind of green regenerative energy sources of tool development and use scale in the new forms of energy.One aspect of the present invention provides a kind of straw burning heat supply power generation project, and this project will become the most tangible domestic project of supporting agriculture and energy-saving and environmental protection project, is the renewable energy source item that the rapid large tracts of land of China's most probable is promoted.On the other hand, the present invention efficiently solves problems such as complicated component, moisture content height, dirt amount that domestic waste faced be big in combustion process, effectively supported the good development of waste incineration cause.Have above characteristics just because of farmland stalks mixed burned with city life garbage power project, simultaneously it may solve the coal supply that present many enterprises face again and is becoming tight, price continues the problem of rising, all has the meaning of particular importance at aspects such as saving non-renewable resources, alleviation power supply shortage.The present invention will produce significant social, economic benefit, will produce far-reaching influence to the sustainable development and the reasonable resources utilization of the development and use of China's incineration treatment of garbage industry and cleaning new energy, human ecological environment.
Claims (7)
1. a method of utilizing stalks mixed burned with city life garbage power is characterized in that farmland stalk and domestic waste mixed combustion.
2. a kind of method of utilizing stalks mixed burned with city life garbage power as claimed in claim 1, it is characterized in that the mixed combustion in incinerator of farmland stalk and domestic waste, the heat energy that produces changes into the generating energy by boiler, steam turbine and generator, power supply.
3. a kind of method of utilizing stalks mixed burned with city life garbage power as claimed in claim 1 is characterized in that described stalk and domestic garbage mixing combustion ratio are 0.01% ~ 80%.
4. a kind of method of utilizing stalks mixed burned with city life garbage power as claimed in claim 1 is characterized in that described stalk and domestic garbage mixing combustion ratio are 10% ~ 30%.
5. a kind of method of utilizing stalks mixed burned with city life garbage power as claimed in claim 2 is characterized in that described incinerator internal combustion temperature is at 870 ℃ to 1200 ℃.
6. a kind of method of utilizing stalks mixed burned with city life garbage power as claimed in claim 5 is characterized in that described incinerator internal combustion temperature is at 900 ℃ to 1100 ℃.
7. a kind of system that utilizes stalks mixed burned with city life garbage power as claimed in claim 2 comprises water-vapor recycle, steam generator system, environmental protection system and ash-slag disposal system; It is characterized in that stalk and house refuse directly enter the incinerator internal combustion, the heat energy of generation changes into the electric energy supply by boiler, steam turbine and generator; The poisonous and harmful flue gas that produces enters purifier and absorbs processing; The lime-ash that produces carries out recycling after collecting.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100148729A CN1888534A (en) | 2006-07-19 | 2006-07-19 | Method for electric generating utilizing stalks mixed burned with city life refuses |
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| CNA2006100148729A CN1888534A (en) | 2006-07-19 | 2006-07-19 | Method for electric generating utilizing stalks mixed burned with city life refuses |
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| CN1888534A true CN1888534A (en) | 2007-01-03 |
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| CNA2006100148729A Pending CN1888534A (en) | 2006-07-19 | 2006-07-19 | Method for electric generating utilizing stalks mixed burned with city life refuses |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105233793A (en) * | 2015-10-19 | 2016-01-13 | 无锡清杨机械制造有限公司 | Method for purifying waste water by utilizing crop straw ash |
| CN109282661A (en) * | 2018-09-04 | 2019-01-29 | 鞍钢股份有限公司 | Method for treating household garbage by hot blast furnace slag |
| CN109442425A (en) * | 2018-10-23 | 2019-03-08 | 刘营营 | Domestic garbage was harmlessly treated method |
| CN109666513A (en) * | 2017-10-16 | 2019-04-23 | 永清环保股份有限公司 | A kind of gasification of biomass and waste incineration coupled system |
| CN109990304A (en) * | 2019-03-29 | 2019-07-09 | 海诺尔环保产业股份有限公司 | A method of it is mixed and burned and is generated electricity using farmland stalk and domestic waste |
| CN113217940A (en) * | 2021-04-28 | 2021-08-06 | 西安热工研究院有限公司 | System and method for improving inlet air temperature and fuel heat value of garbage power station by using geothermal energy |
| CN113357649A (en) * | 2021-07-02 | 2021-09-07 | 上海康恒环境股份有限公司 | Garbage pool material control method and device and incineration cooperative processing system |
-
2006
- 2006-07-19 CN CNA2006100148729A patent/CN1888534A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105233793A (en) * | 2015-10-19 | 2016-01-13 | 无锡清杨机械制造有限公司 | Method for purifying waste water by utilizing crop straw ash |
| CN109666513A (en) * | 2017-10-16 | 2019-04-23 | 永清环保股份有限公司 | A kind of gasification of biomass and waste incineration coupled system |
| CN109282661A (en) * | 2018-09-04 | 2019-01-29 | 鞍钢股份有限公司 | Method for treating household garbage by hot blast furnace slag |
| CN109442425A (en) * | 2018-10-23 | 2019-03-08 | 刘营营 | Domestic garbage was harmlessly treated method |
| CN109990304A (en) * | 2019-03-29 | 2019-07-09 | 海诺尔环保产业股份有限公司 | A method of it is mixed and burned and is generated electricity using farmland stalk and domestic waste |
| CN113217940A (en) * | 2021-04-28 | 2021-08-06 | 西安热工研究院有限公司 | System and method for improving inlet air temperature and fuel heat value of garbage power station by using geothermal energy |
| CN113357649A (en) * | 2021-07-02 | 2021-09-07 | 上海康恒环境股份有限公司 | Garbage pool material control method and device and incineration cooperative processing system |
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