CN105351019A - Power generation technique based on pyrolyzation and gasification of refuse derived fuel (RDF) prepared from household refuse and incineration of fuel gas - Google Patents

Power generation technique based on pyrolyzation and gasification of refuse derived fuel (RDF) prepared from household refuse and incineration of fuel gas Download PDF

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Publication number
CN105351019A
CN105351019A CN201410410404.8A CN201410410404A CN105351019A CN 105351019 A CN105351019 A CN 105351019A CN 201410410404 A CN201410410404 A CN 201410410404A CN 105351019 A CN105351019 A CN 105351019A
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China
Prior art keywords
rdf
gas
steam
heat
passed
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CN201410410404.8A
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Chinese (zh)
Inventor
张光杰
张啸宇
林春堆
陈欢乐
郭盛果
陈昱炜
张孚清
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FUJIAN ZHENGREN ENVIRONMENTAL PROTECTION Co Ltd
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FUJIAN ZHENGREN ENVIRONMENTAL PROTECTION Co Ltd
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Priority to CN201410410404.8A priority Critical patent/CN105351019A/en
Publication of CN105351019A publication Critical patent/CN105351019A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses a power generation technique based on pyrolyzation and gasification of refuse derived fuel (RDF) prepared from household refuse and incineration of fuel gas. The power generation method comprises the steps that the household refuse is sorted, pulverized and dried and then is made into the solid RDF; pyrolyzation and gasification are conducted on the solid RDF, so that combustible gas is generated; the combustible gas is incinerated; steam is prepared from hot air obtained through incineration through heat exchange; and the steam is introduced into a steam power generator for power generation. According to the power generation technique based on pyrolyzation and gasification of the RDF prepared from the household refuse and incineration of the fuel gas, the household refuse is made into the combustible solid RDF, and thus formation of dioxin can be effectively restrained; after prepared bars are formed, the moisture content is decreased, the heat value is increased, and the power generation efficiency is improved; the dioxin is completely decomposed by conducting heat-storage incineration of the generated combustible gas through secondary gas at the temperature over 850 DEG C, and waste heat is used for drying the refuse; smoke emission hardly exists under the adsorption action of the pulverized refuse.

Description

RDF pyrolysing gasification combustion gas burning electricity generation technique prepared by one way of life rubbish
Technical field
The present invention relates to the processing technology field of domestic garbage, particularly relate to one way of life rubbish and prepare RDF pyrolysing gasification combustion gas burning electricity generation technique.
Background technique
Along with the development of society, the quickening of urbanization process, urban population increases, living standards of the people improve, and the output of domestic waste is constantly increasing, and the composition of domestic garbage is also increasingly sophisticated, day by day serious to the harm of the pollution of environment and people ' s health, also limit the development in city.In addition, coal and the petroleum resources deposit of China do not enrich, and occupancy volume per person is lower, faces energy crisis, and fossil energy in use discharges a large amount of harmful gases, and befouling environment affects the healthy of the people.Electric energy cleanliness without any pollution, can convert the other forms of energy such as mechanical energy, luminous energy, heat energy easily to, and extensively be utilized by people.Now, electric energy is inseparable with daily life.
If directly burned domestic garbage, a large amount of harm of dusty gas aggravation to environment can be given off.The daily household electricity of present people is mostly by thermal power generation, self-evident to the consumption of the energy.In order to solve energy problem, people have developed the multiple technological scheme and the equipment that the living beings such as stalk, leaf are carried out to pyrolysing gasification, generate inflammable gas, and be widely used in that rural area replaces that crop straw burning is used for cooking, heating etc., not only increase usefulness and greatly reduce the discharge of flue gas.If can use above technology that domestic garbage pyrolysis gasification is generated inflammable gas, these inflammable gass are utilized to generate electricity, the process problem of domestic garbage can not only be solved, electric energy can also be provided for daily life, process for domestic garbage is brought revolutionary impact, and the problem of energy shortage can be solved to a certain extent.
Application number be 201220184786.3 Chinese patent disclose the utility model patent of " garbage derivatived fuel integrated gas-steam combined cycle power plant device " by name, the Chinese patent of application number 201220184784.4 discloses the utility model patent of " garbage derivatived fuel combination type gas-steam combined cycle power generating device " by name, application number be 201220382981.7 Chinese patent disclose " a kind of mud by name, garbage derivatived fuel combination combined cycle generation system of fuel gas-steam " utility model patent, although these technological schemes reach above object to a certain extent, but ubiquity can not make full use of heat energy, tail gas is direct or be indirectly discharged in air after simple process, heat energy in tail gas is wasted, tail gas containing heat energy not only can cause greenhouse effect but also can cause secondary pollution, the slag produced after waste incineration or pyrolysing gasification directly stacks or landfill also can affect soil property polluted source.
Summary of the invention
The object of the present invention is to provide a kind of can be appropriate utilization and process domestic rubbish disposal process in all products, make full use of the heat energy of waste incineration, the domestic garbage of harmful gas zero-emission prepares RDF pyrolysing gasification combustion gas burning electricity generation technique.
Above-mentioned purpose of the present invention is realized by following technical proposal:
RDF pyrolysing gasification combustion gas burning electricity generation technique prepared by one way of life rubbish, through sorting, pulverizing and drying by former domestic garbage, then RDF solid fuel is made, RDF solid fuel is carried out pyrolysing gasification and generate inflammable gas, incineration of combustible gas, burning gained hot gas is prepared steam by heat exchange, steam is passed into steam-driven generator and generates electricity;
Comprise following step:
1) refuse classification: sub-elect the inorganic matters (being for recycling and reuse to inorganic matter) such as the metal in former domestic garbage, glass, stone, retains the organic substance in domestic garbage;
2) garbage crushing: after sorting being removed inorganic matter, remaining organic domestic waste is put into shredder and pulverized;
3) drying garbage: the organic domestic waste after pulverizing is put into drying equipment and carry out drying process;
4) RDF is prepared: in above-mentioned dried domestic garbage, add desulfurization depickling promote that the additive of bonding makes RDF solid fuel by rod-made machine or particle device processed;
5) RDF pyrolysing gasification: RDF solid fuel is put into pyrolysis gasification furnace, carries out pyrolysing gasification, obtains inflammable gas;
6) combustion gas is burned: the gained inflammable gas that gasified by domestic garbage pyrolysis passes into firing chamber and burns, and obtains hot gas;
7) heat exchange: burning gained hot gas is passed into heat-exchanger rig, obtains hot steam;
8) steam electric power: hot steam is passed into steam-driven generator generating.
Further, the waste heat gas formed after step 7) hot gas is passed into heat-exchanger rig heat exchange is passed into the drying equipment in step 3), utilizes the heat energy of waste heat gas to carry out drying to the organic domestic waste after pulverizing; Thus effectively and fully utilize heat energy, reduce greenhouse effect.
Further, before waste heat gas is passed into drying equipment, adjustment cooling is carried out to waste heat gas temperature is down to 150 ~ 200 DEG C (preferable temperature is down to 180 DEG C); The waste heat gas that hot gas is formed after being passed into heat-exchanger rig heat exchange is generally also in higher temperature, be directly used in drying and even can light rubbish, and rubbish itself can produce biogas, and it is very dangerous for utilizing high-temperature gas to carry out drying.
Further, the hot water produced after step 8) hot steam being passed into steam-driven generator generating is passed in the heat-exchanger rig of step 7), and provide water source for heat-exchanger rig produces hot steam, hot water more easily gasifies as steam.
The invention has the beneficial effects as follows:
1, domestic garbage is made combustible RDF solid fuel, can burn as coal briquette, flying dust total amount reduces greatly, effectively can contain heavy metals emission, reduces the discharge amount of incineration flue gas; The inner CL element of bar (or particle) and oxygen area of contact greatly reduce, and effectively can contain the formation of dioxin; After system rod is shaping, moisture content reduces calorific value and improves, and is beneficial to and improves combustion temperature and uniformity, improve firing rate simultaneously, improve furnace temperature, and favourable dioxin decomposes more thorough;
2, first under anaerobic or oxygen lean conditions, carry out pyrolysing gasification instead of directly burn after drying garbage, greatly reducing the generation of dioxin; The combustible gas produced stores temperature through secondary air more than 850 degree and burns, and ensures that furnace temperature decomposes dioxin equably, avoids solid to burn because in-furnace temperature inequality causes part of fuel not reach decomposing dioxin temperature required and produce dioxin; Tail gas (waste heat gas) is for garbage drying, and owing to pulverizing the suction-operated of rear rubbish, flue gas is substantially without discharge;
3, RDF solid fuel calorific value is high more than former garbage organism, improve generating efficiency, due to storability and the highly dense property of RDF, be conducive to the realization of rubbish distributed terminal process, to rural area and backwoodsman waste processing practicability very strong; The thermal energy conversion rate of pyrolysing gasification is higher, greatly improves generating efficiency, and the economic benefit of increase is enough to offset the cost improved because increasing operation;
4, utilization efficiency of heat energy is high, effectively avoids producing greenhouse effect, and generating output is large; Cleanliness without any pollution, the every the same product in garbage processing procedure can obtain rationally and utilize fully, brings many benefits, turn waste into wealth while pollution abatement, for people live creation happiness while solving refuse pollution.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Specific embodiment
Carry out more detailed explanation technological scheme of the present invention below by embodiment, but protection domain is not limited thereto.
The drying equipment related in following embodiment can select equipment disclosed in the patent of invention of another " one way of life garbage drying equipment " by name.
The desulfurization depickling related in following embodiment promotes that the additive of bonding can use the technological scheme of the patent of invention of another " one way of life garbage derivatived fuel (RDF) shaping admixture " by name to obtain, and can be also that 3:5:5 is formulated by weight by lime, pulverized fuel ash and sawdust stalk.
The pyrolysis gasification furnace related in following embodiment can select equipment disclosed in the patent of invention of another " one way of life rubbish pyrolysis gasification oven " by name or other like product.
Device disclosed in the utility model patent of another " one way of life rubbish pyrolysis combustible gas high-temp combustion device " by name can be selected in the firing chamber related in following embodiment, or other like product.
The heat-exchanger rig related in following embodiment, is shown in the utility model patent of another " one way of life rubbish pyrolysis gas firing heat-exchanger rig " by name.
embodiment: domestic garbage of the present invention is prepared RDF pyrolysing gasification combustion gas burning electricity generation technique and is clicked step: 1) sub-elect the metal in former domestic garbage, glass, the inorganic matters such as stone, the process of sorting can be that artificial selection also can be selected by machine, with human eye, artificial selection obviously can see that (inorganic matter) is for degree, some workmans are used to raise the efficiency, by the inorganic matter that sub-elects as metal, glass etc. are for recycling and reuse, by the inorganic matter that sorts out as stone, bricks etc. can be used for preparing construction timber, retain the organic substance (organic principle) in domestic garbage, 2) after inorganic matter being removed in sorting, remaining organic domestic waste is put into shredder and is pulverized, and uses common waste disposer to carry out pulverizing, 3) organic domestic waste after pulverizing is put into drying equipment and carry out drying process, the foul smell produced in dried journey or moisture pass into vent gas treatment pond as Calcified pond or other treatment facility, discharge after process, 4) RDF is prepared: in above-mentioned dried domestic garbage, add desulfurization depickling promote that the additive of bonding makes RDF solid fuel by rod-made machine or particle device processed, the rod-made machine announced in the patent of invention of " one way of life rubbish system rod equipment " by name can be used to make bar, or use the device announced in the utility model patent of " fuel particle device made by one way of life rubbish " by name to make particle, 5) RDF solid fuel is put into pyrolysis gasification furnace, carry out pyrolysing gasification, obtain inflammable gas, 6) solution gasification gained inflammable gas is passed into firing chamber to burn, collect gained hot gas, 7) gained hot gas is passed into heat-exchanger rig, the water in hot gas heat exchanging device carries out heating Heat of Formation steam, 8) hot steam by step 7) gained is passed into steam-driven generator to generate electricity.
In the above-described embodiment, in step 5), RDF solid fuel generates inflammable gas after pyrolysing gasification, and form slag (residue) at furnace bottom, the stone sub-elected in slag and step 1), brick etc. are used for making structural material, and particularly slag (residue) is the desirable material firing fragment of brick.After in step 7), hot gas is passed into heat-exchanger rig heat exchange, on the one hand, the water in heat-exchanger rig is heated and is gasificated into water vapor; On the other hand, the hot gas after heat exchange becomes the waste heat gas be with and had surplus heat; After the cooling of waste heat gas regulation is reached safe temperature range, (becoming the dry hot gas shown in accompanying drawing) is passed into the drying equipment in step 3), the heat energy of waste heat gas is utilized to carry out drying to the organic domestic waste after pulverizing, thus effectively and fully utilize heat energy, reduce heat dissipation to the destruction of environment.Lower the temperature for by waste heat gas regulation, be generally down to 150 ~ 200 DEG C and be safe temperature range; For taking into account the safe, efficient of production, waste heat gas is adjusted to 180 DEG C as optimal selection.After hot steam in step 8) being passed into steam-driven generator generating, hot steam becomes hot water after losing temperature, hot water is passed into above-mentioned steps 7) in heat-exchanger rig in, water source is provided for heat-exchanger rig produces hot steam, hot water more easily gasifies as steam, also further increases the utilization ratio of energy.
Technological scheme in the present embodiment, in the practical application in December, 2013-2014 year March, achieves generating efficiency and generated energy all improves more than 65%, dioxin decompose more thoroughly and flue gas after adsorbing, the good result of vent gas treatment cost savings more than 68%.
The foregoing is only the preferred embodiments of the present invention, be not limited to invention, although with reference to previous embodiment to invention has been detailed description, for the technician in wooden field, it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within all spirit in invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in invention.

Claims (4)

1. RDF pyrolysing gasification combustion gas burning electricity generation technique prepared by one way of life rubbish, it is characterized in that: described domestic garbage prepares RDF pyrolysing gasification combustion gas burning electricity generation technique, through sorting, pulverizing and drying by former domestic garbage, then RDF solid fuel is made, RDF solid fuel is carried out pyrolysing gasification and generate inflammable gas, incineration of combustible gas, prepares steam by burning gained hot gas by heat exchange, steam is passed into steam-driven generator and generates electricity;
Comprise following step:
1) refuse classification: sub-elect the inorganic matters (being for recycling and reuse to inorganic matter) such as the metal in former domestic garbage, glass, stone, retains the organic substance in domestic garbage;
2) garbage crushing: after sorting being removed inorganic matter, remaining organic domestic waste is put into shredder and pulverized;
3) drying garbage: the organic domestic waste after pulverizing is put into drying equipment and carry out drying process;
4) RDF is prepared: in above-mentioned dried domestic garbage, add desulfurization depickling promote that the additive of bonding makes RDF solid fuel;
5) RDF pyrolysing gasification: RDF solid fuel is put into pyrolysis gasification furnace, carries out pyrolysing gasification, obtains inflammable gas;
6) combustion gas is burned: inflammable gas is passed into firing chamber and burn, obtain hot gas;
7) heat exchange: burning gained hot gas is passed into heat-exchanger rig, obtains hot steam;
8) steam electric power: hot steam is passed into steam-driven generator generating.
2. RDF pyrolysing gasification combustion gas burning electricity generation technique prepared by one way of life rubbish according to claim 1, it is characterized in that: the waste heat gas formed after step 7) hot gas is passed into heat-exchanger rig heat exchange is passed into the drying equipment in step 3), drying is carried out to the organic domestic waste after pulverizing.
3. RDF pyrolysing gasification combustion gas burning electricity generation technique prepared by one way of life rubbish according to claim 2, it is characterized in that: before waste heat gas is passed into drying equipment, adjustment cooling is carried out to waste heat gas temperature is down to 150 ~ 200 DEG C (preferable temperature is down to 180 DEG C).
4. RDF pyrolysing gasification combustion gas burning electricity generation technique prepared by the one way of life rubbish according to any one of claim 1 ~ 3, it is characterized in that: the hot water produced after step 8) hot steam being passed into steam-driven generator generating is passed in the heat-exchanger rig of step 7), provide water source for heat-exchanger rig produces hot steam.
CN201410410404.8A 2014-08-20 2014-08-20 Power generation technique based on pyrolyzation and gasification of refuse derived fuel (RDF) prepared from household refuse and incineration of fuel gas Pending CN105351019A (en)

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CN106017064A (en) * 2016-06-29 2016-10-12 浙江瑞丰环保科技股份有限公司 Combined deodorization technology of biomass heat source
CN106001065A (en) * 2016-06-29 2016-10-12 福建正仁环保有限公司 Biomass prepared RDF-4 pyrolysis and gasification zero-smoke-emission steam electricity generation technology
CN106433849A (en) * 2016-10-01 2017-02-22 湖北环太生物质设备有限公司 Method for preparing gasifier fuel from household garbage
CN107537841A (en) * 2016-06-29 2018-01-05 厦门中环碧海环保科技有限公司 A kind of residents in rural community distributed treatment technique
WO2020243994A1 (en) * 2019-06-06 2020-12-10 马天牧 Combined biomass carbonization, heat and electricity production system

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CN107537841A (en) * 2016-06-29 2018-01-05 厦门中环碧海环保科技有限公司 A kind of residents in rural community distributed treatment technique
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WO2020243994A1 (en) * 2019-06-06 2020-12-10 马天牧 Combined biomass carbonization, heat and electricity production system

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