CN109931615A - A kind of industrial and municipal solid waste melt pyrolysis system - Google Patents
A kind of industrial and municipal solid waste melt pyrolysis system Download PDFInfo
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- CN109931615A CN109931615A CN201910329923.4A CN201910329923A CN109931615A CN 109931615 A CN109931615 A CN 109931615A CN 201910329923 A CN201910329923 A CN 201910329923A CN 109931615 A CN109931615 A CN 109931615A
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 79
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 15
- 239000002440 industrial waste Substances 0.000 title abstract description 6
- 239000002910 solid waste Substances 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003546 flue gas Substances 0.000 claims abstract description 32
- 239000003034 coal gas Substances 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000000571 coke Substances 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000010791 quenching Methods 0.000 claims abstract description 8
- 230000000171 quenching effect Effects 0.000 claims abstract description 8
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- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000002918 waste heat Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 23
- 239000000155 melt Substances 0.000 claims description 22
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- 239000003517 fume Substances 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 7
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- 229910052742 iron Inorganic materials 0.000 claims description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
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- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
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Abstract
The present invention proposes a kind of industrial and municipal solid waste melt pyrolysis system, including vertical melt pyrolysis furnace, and gas burner, residual heat boiler for exchanging heat device, flue gas quenching tower, deduster, desulphurization denitration takes off and dioxin device, air-introduced machine and chimney.Processing method includes the following steps: that melt pyrolysis furnace is added in solid waste after pretreatment, melt pyrolysis furnace is simultaneously with addition of part of coke and flux, metal is at molten point of melt pyrolysis furnace reduction, solid waste is pyrolyzed melting in furnace, form metal, clinker and coal gas, metal and clinker are discharged in melt pyrolysis furnace bottom, coal gas enters gas burner's burning, flue gas after burning is through waste heat boiler and heat exchanger output hot wind and steam, hot wind blasts melt pyrolysis furnace, steam output power generation, flue gas after heat exchange enters chilling tower cooler, flue gas after cooling, which enters after dust-removal and desulfurizing denitration takes off dioxin, to be discharged.The present invention is by solid waste melt pyrolysis, and metal resource recycling, clinker are melt into glassy state slag and recycle in solid waste.
Description
Technical field
The present invention relates to fixed-end forces and resource utilization field, the specially solid in industrial production and urban life is useless
The Treatment and recovery of object utilizes, especially the Industrial Solid Waste and hazardous waste in processing metal smelt production process, especially
A kind of industrial and municipal solid waste melt pyrolysis system.
Background technique
Industrial solid castoff, refer to industrial and mining enterprises production active procedure in emit various waste residues, dust and
Other wastes etc..Industrial solid wastes concentration is present in mining industry, food, chemical industry, thermoelectricity, chemical fibre, casting, timber processing and mineral
Industries, these industries such as smelting can generate a large amount of solid waste.This solid waste, substantial amounts, complicated component, type are numerous
It is more.Data statistics shows that China's Industrial Solid Waste yield is in growing trend, and the solid waste yield coming years are expected to maintain 8%
The growth rate of left and right.Generate every year 3,300,000,000 tons of Industrial Solid rescission of China, the Industrial Solid Waste total amount stored up over the years is more than 60,000,000,000
Ton takes up an area more than 2,000,000 hectares.By 2021, China's Industrial Solid Waste yield will break through 4,600,000,000 tons.Industrial Solid Waste not only wastes
Resource, land occupation, and serious environment and security risk are brought, endanger ecological environment and human health.
The Industrial Solid Waste in China is related to the industries such as many aspects, especially steel, chemical industry, electric power, coal and generates largely
Industrial solid castoff.Some cities relevant to steel industry, pile up like a mountain for a large amount of metallurgical slag.Meanwhile in many mining industry
Relatively advanced area, Industrial Solid Waste are not reduced not only on yield, enough attention are not also obtained in storage, largely
Pollution and the renovation of environment face very big pressure.It is reported that the utilization rate of the current large Industrial Solid Waste in China compares
It is lower, only 50% or so.Especially some tailings, the comprehensive utilization difficulty of ardealite are big, and added value is limited, enterprise's enthusiasm
Not high, comprehensive utilization ratio only has more than 30%.With the raising of environmental requirement recent years, policy is increasingly stringent, to the useless unit of production
Requirement it is higher and higher, fixed-end forces it is improper caused by environmental problem gradually show, traditional extensive tupe will gradually by
It bans, meanwhile, the technical support scarce capacity of Industrial Solid Waste, extensive, high added value, comprehensive utilization technique without secondary pollution
It there is also some problems.
And for the danger with one or more hazard properties such as corrosivity, toxicity, inflammability, reactivity, infectivity
Waste is at present 39,760,000 tons there are huge notch 2015 national dangerous waste yields between country's yield and treating capacity, but
It is to be declared due to the data source in enterprise self-determining, hence it is evident that be lower than practical yield.
Dangerous waste innoxious process for treating includes physical method, chemical method and curing/stabilizing etc., and final disposal mode includes:
Land fill, incineration method, stockpiling method, soil cultivating method, deep well injection method and ocean facture etc..At present land fill and
Incineration method is the important method of most countries final process solid waste and the common method of final process dangerous waste.Soil
Landfill method has the advantages that treating capacity is big, energy consumption is small, but construction requirements are stringent, and demand for capital is big, and because of land occupation resource
The problem of addressing hardly possible is faced, the method for disposal minimizing and recycling effect are poor；The reduced training of incineration method is good, but investment operation
It is at high cost, public subsidies are depended on, it is not still the ideal of dangerous waste at present that the flying dust finally generated, clinker, which still need to landfill stabilization,
Processing mode.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a solid waste melt pyrolysis system, realizes industrial production and urban life
In solid waste, especially processing metal smelt production process in Industrial Solid Waste and hazardous waste Treatment and recovery benefit
With.
The present invention reaches goal of the invention by following technical solution:
The present invention proposes a kind of industrial and municipal solid waste melt pyrolysis system, which includes vertical melt pyrolysis
Furnace, gas burner, residual heat boiler for exchanging heat device, melt pyrolysis furnace air blast facility, flue gas quenching tower, fume treatment facility, air inducing
Machine and chimney；
The vertical melt pyrolysis furnace is coke fixed bed melt pyrolysis furnace, including feeding device, melt pyrolysis furnace body,
Slag processing apparatus；
The feeding device is set on the melt pyrolysis furnace body, and solid waste and coke, flux are filled by the charging
It sets and the melt pyrolysis furnace body is added, prevent evolution at the top of melt pyrolysis producer gas using mechanical or stock column sealing means, add
Sealing structure is opened when material, is closed after charging；
The melt pyrolysis furnace body includes top material feeding section, shaft, furnace bottom cupola well, melt pyrolysis furnace body lower part
If air port, hot wind is blasted by air port, and the top material feeding section receives the solid waste of feeding device addition, and furnace bottom cupola well bottom is set
Slag and metal discharge hole, molten slag are discharged by the outlet, coal gas by the top material feeding section bottom coal gas outlet port
Extraction；
The slag processing apparatus includes slag iron separation device and slag granulation plant.
Further, the coal gas withdrawn position pressure of melt pyrolysis furnace body top material feeding section bottom coal gas outlet port
Control is tiny structure, guarantees that gas will not be escaped from the feeding device in melt pyrolysis furnace roof portion.
Further, the gas burner is connected to the coal gas outlet port of melt pyrolysis furnace, and gas burner includes to help
Wind entrance is fired, waste liquid entrance, fuel entrance, gas burner's ignition temperature is 1000 DEG C or more, and flue gas is 1000
DEG C or more the residence time be greater than 2 seconds, the settable amino reductive entrance in gas burner carries out denitration.
Further, the residual heat boiler for exchanging heat device is connected to the exhanst gas outlet of the gas burner, the melting heat
Solution furnace air blast facility is connected to the residual heat boiler for exchanging heat device, and air blast is after residual heat boiler for exchanging heat device heating by described molten
Melt pyrolysis oven air blast facility to blast in furnace, air blast is oxygen-enriched using air or part, the residual heat boiler for exchanging heat device exiting flue gas temperature
Degree is greater than 500 DEG C.
Further, the flue gas quenching tower is connected to the residual heat boiler for exchanging heat device outlet, sprays into atomization in chilling tower
Water cooled flue gas, chilling tower exit gas temperature are lower than 200 DEG C, and flue gas is in 500 DEG C -200 DEG C of cooling time less than 2 seconds.
Further, fume treatment facility is connected after the flue gas quenching tower, the fume treatment facility includes desulfurization dress
It sets, dust-extraction unit, denitrification apparatus, dioxin removal apparatus.
Further, air-introduced machine and chimney are set after the fume treatment facility, system pressure is controlled by air-introduced machine.
The present invention provides a solid waste melt pyrolysis system, realizes the solid waste in industrial production and urban life, especially
The Treatment and recovery of Industrial Solid Waste and hazardous waste in processing metal smelt production process utilizes.The present invention melts solid waste
Melt pyrolysis, metal resource recycles in solid waste, and clinker is melt into glassy state slag and recycles.
Detailed description of the invention
Fig. 1 show the industry of present pre-ferred embodiments and the melt pyrolysis system structure signal of municipal solid waste
Figure.
Fig. 2 show the structural schematic diagram of the vertical melt pyrolysis furnace of present pre-ferred embodiments.
Specific embodiment
A specific embodiment of the invention is provided below in conjunction with attached drawing, but the present invention is not limited to the following embodiments and the accompanying drawings.Root
According to following explanation and claims, advantages and features of the invention will be become apparent from.It should be noted that attached drawing be all made of it is very simple
The form of change and use non-accurate ratio, be only used for conveniently, lucidly aid in illustrating the embodiment of the present invention purpose.
The present invention provides a solid waste melt pyrolysis system, realizes the solid waste in industrial production and urban life, especially
The Treatment and recovery of Industrial Solid Waste and hazardous waste in processing metal smelt production process utilizes.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 show the industry of present pre-ferred embodiments and the melting heat of municipal solid waste
System structure diagram is solved, Fig. 2 show the structural schematic diagram of the vertical melt pyrolysis furnace of present pre-ferred embodiments.
The present invention proposes a kind of industrial and municipal solid waste melt pyrolysis system, which includes vertical melt pyrolysis
Furnace 100, gas burner 200, residual heat boiler for exchanging heat device 300, melt pyrolysis furnace air blast facility 400, flue gas quenching tower 500, cigarette
Gas disposal facility 600, air-introduced machine 700 and chimney 800；
The vertical melt pyrolysis furnace 100 is coke fixed bed melt pyrolysis furnace, including feeding device 110, melt pyrolysis
Furnace body 120, slag processing apparatus 130；
The feeding device 110 is set on the melt pyrolysis furnace body 120, and solid waste and coke, flux are by described
The melt pyrolysis furnace body 120 is added in feeding device 110, prevents melt pyrolysis producer gas using mechanical or stock column sealing means
Top evolution, when charging, open sealing structure, close after charging；
The melt pyrolysis furnace body 120 includes top material feeding section 121, shaft 122, furnace bottom cupola well 123, the melting heat
Solution 120 lower part of furnace body sets air port, and hot wind is blasted by air port, and the top material feeding section 121 receives consolidating for the addition of feeding device 110
Useless, 123 bottom of furnace bottom cupola well sets slag and metal discharge hole, and molten slag is discharged by the outlet, and coal gas is by described
It extracts out the coal gas outlet port 124 of 121 bottom of portion's material feeding section；
The slag processing apparatus 130 includes slag iron separation device 131 and slag granulation plant 132.
Industrial Solid Wastes and the dangerous wastes such as scrap iron and steel, waste residue, smelting dust, oily sludge, damaged tire plastic stool, it is preprocessed at
After certain lumpiness, into melt pyrolysis furnace feeder 110, feeding device 110 is according to the type of solid waste, calorific value and sulphur, chlorine
Equal harmful substance contents carry out ingredient, ingredient include solid waste waste ingredient and coke flux with addition of coke flux additional amount
It is calculated according to solid waste ingredient and the slag composition of setting with addition of coke, flux is added simultaneously with solid waste, and the material prepared is through feeding
Device 110 is added in furnace, and feeding device 110 is cooperated using basket charging by the way of elevator or truck cooperation skew bridge.
Melt pyrolysis furnace roof portion is equipped with bell, and after 110 material basket of feeding device or truck are lifted at furnace roof, bell is opened, object
Material is added in furnace, and solid waste enters top material feeding section after being added to melt pyrolysis furnace, it is close that furnace charge in top material feeding section 121 plays stock column
Envelope effect, prevents gas from escaping from furnace roof, and junction is equipped with coal gas outlet port 124 at the top of 121 bottom of top material feeding section and shaft,
124 position control of coal gas outlet port is tiny structure, guarantees that gas will not be escaped from the feeding device 110 in melt pyrolysis furnace roof portion,
Coal gas is extracted out from outlet port, and 121 column of top material feeding section material resistance damage from furnace roof sucking while preventing coal gas from furnace with to avoid air
Top evolution.
Shaft 122 is heat exchange and frit reaction section, the coal gas that coke and organic matter pyrolysis generate from 122 lower part of shaft to
On, furnace charge is formed down convective motion by 122 top of shaft, and heat is transmitted to furnace charge by coal gas, and goes upward to 122 top coal of shaft
Gas outlet port 124 is extracted out, and shaft 122 is the resistance to material structure of water cooling, and shaft 122 and 123 intersection of furnace bottom cupola well are equipped with an exhaust outlet,
Hot wind is blasted by air port, is reacted with coke and organic matter and is generated coal gas.
Furnace bottom cupola well 123 is coke fixed bed, and the clinker and metal of melting by cinder notch by being discharged, furnace bottom after fixed bed
Cupola well 123 is according to the type difference setting cinder notch or metal discharge hole of melting solid waste, and furnace bottom cupola well 123 is using the metal knot of resistance to material
Structure, external water cooling, metal and clinker the slag iron separation device 131 outside furnace separate depending on the specific gravity, classification recycling, slag granulation
Device 132 is by slag granulating at the particle of recoverable.
The gas burner 200 is connected to the coal gas outlet port 124 of melt pyrolysis furnace 100, melt pyrolysis producer gas from
After coal gas outlet port 124 is extracted out, into gas burner 200, gas burner 200 includes combustion air entrance, waste liquid entrance,
Fuel entrance, the waste liquid that need to be handled are sprayed by combustion chamber, and combustion chamber combustion air can be taken out with solid waste warehouse or storage workshop ventilation
Wind blasts, and described 1000 DEG C of 200 ignition temperature of gas burner or more, flue gas is greater than 2 seconds in 1000 DEG C or more residence times, if
Temperature is inadequate, then supplements part of fuel, when the temperature is excessively high, to avoid NO_x formation, can blast it is Partial cleansing after flue gas,
Gas burner can spray into amino reductive and carry out denitration.
The residual heat boiler for exchanging heat device 300 is connected to the exhanst gas outlet of the gas burner 200, the melt pyrolysis furnace
Air blast facility 400 is connected to the residual heat boiler for exchanging heat device 300, and air blast passes through after the residual heat boiler for exchanging heat device 300 heating
The melt pyrolysis furnace air blast facility 400 blasts in furnace, and the flue gas after gas burner's burning enters residual heat boiler for exchanging heat device
300, heat exchanger 300 connects melt pyrolysis furnace air blast facility 400, and flue gas partial heat is used for needed for heating melting pyrolysis oven 100
Hot wind, melt pyrolysis furnace air blast using air or part it is oxygen-enriched, it is oxygen-enriched to may be provided at before heat exchanger or after heat exchanger, flue gas remaining
Heat is greater than 500 DEG C by waste heat boiler byproduct steam, 300 exit gas temperature of residual heat boiler for exchanging heat device.
The flue gas quenching tower 500 is connected to the residual heat boiler for exchanging heat device 300 and exports, and heat boiler outlet flue gas enters
Chilling tower 500, chilling tower 500 is interior to spray into atomized water cooled flue gas, and 500 exit gas temperature of chilling tower is lower than 200 DEG C, and flue gas exists
500 DEG C -200 DEG C of cooling time was less than 2 seconds.
Fume treatment facility 600 is connected after the flue gas quenching tower 500, the fume treatment facility 600 is filled including dedusting
Set 610, desulfurizer 620, denitrification apparatus 630, dioxin removal apparatus 640.Flue gas after chilling enters fume treatment facility
600, dust-extraction unit 610 is sequentially entered, desulfurizer 620, denitrification apparatus 630, dioxin removal apparatus 640, desulfurization can be according to place
The sulfur content for managing waste uses dry method, semidry method or wet process, and denitration facility can be used SCR mode, SNCR form can be used, and uses
It is arranged when SNCR in gas burner.
Air-introduced machine 700 and chimney 800 are set after the fume treatment facility 600, system pressure is controlled by air-introduced machine 700.
Treated, and flue gas is discharged through air-introduced machine 700 and chimney 800, and whole system pressure is controlled by air-introduced machine 700.Melt pyrolysis furnace
Coal gas withdrawn position pressure control in material feeding section bottom is tiny structure, guarantees that gas will not escape from melt pyrolysis furnace roof portion's feeding device
Out.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (7)
1. the melt pyrolysis system of a kind of industry and municipal solid waste, which is characterized in that the system includes vertical melt pyrolysis
Furnace, gas burner, residual heat boiler for exchanging heat device, melt pyrolysis furnace air blast facility, flue gas quenching tower, fume treatment facility, air inducing
Machine and chimney；
The vertical melt pyrolysis furnace is coke fixed bed melt pyrolysis furnace, including feeding device, melt pyrolysis furnace body, slag
Processing unit；
The feeding device is set on the melt pyrolysis furnace body, and solid waste and coke, flux are added by the feeding device
Enter the melt pyrolysis furnace body, prevent evolution at the top of melt pyrolysis producer gas using mechanical or stock column sealing means, when charging
Sealing structure is opened, is closed after charging；
The melt pyrolysis furnace body includes top material feeding section, and shaft, furnace bottom cupola well, melt pyrolysis furnace body lower part sets wind
Mouthful, hot wind blasts by air port, and the top material feeding section receives the solid waste of feeding device addition, furnace bottom cupola well bottom set slag and
Metal discharge hole, molten slag are discharged by the outlet, and coal gas is extracted out by the coal gas outlet port of the top material feeding section bottom；
The slag processing apparatus includes slag iron separation device and slag granulation plant.
2. the melt pyrolysis system of industry according to claim 1 and municipal solid waste, which is characterized in that the melting
The coal gas withdrawn position pressure control of pyrolysis oven body upper part material feeding section bottom coal gas outlet port is tiny structure, guarantees that gas will not
It is escaped from the feeding device in melt pyrolysis furnace roof portion.
3. the melt pyrolysis system of industry according to claim 1 and municipal solid waste, which is characterized in that the coal gas
Combustion chamber is connected to the coal gas outlet port of melt pyrolysis furnace, and gas burner includes combustion air entrance, waste liquid entrance, fuel spray
Entrance, gas burner's ignition temperature are 1000 DEG C or more, and flue gas is greater than 2 seconds in 1000 DEG C or more residence times, coal gas
The settable amino reductive entrance in combustion chamber carries out denitration.
4. the melt pyrolysis system of industry according to claim 1 and municipal solid waste, which is characterized in that the waste heat
Boiler heat-exchanger is connected to the exhanst gas outlet of the gas burner, and the melt pyrolysis furnace air blast facility is connected to the waste heat
Boiler heat-exchanger, air blast are blasted in furnace after residual heat boiler for exchanging heat device heating by the melt pyrolysis furnace air blast facility,
Air blast is oxygen-enriched using air or part, and the residual heat boiler for exchanging heat device exit gas temperature is greater than 500 DEG C.
5. the melt pyrolysis system of industry according to claim 1 and municipal solid waste, which is characterized in that the flue gas
Chilling tower is connected to the residual heat boiler for exchanging heat device outlet, sprays into atomized water cooled flue gas, chilling tower exiting flue gas in chilling tower
Temperature is lower than 200 DEG C, and flue gas is in 500 DEG C -200 DEG C of cooling time less than 2 seconds.
6. the melt pyrolysis system of industry according to claim 1 and municipal solid waste, which is characterized in that the flue gas
Fume treatment facility is connected after chilling tower, the fume treatment facility includes desulfurizer, dust-extraction unit, and denitrification apparatus takes off two
Dislike English device.
7. the melt pyrolysis system of industry according to claim 1 and municipal solid waste, which is characterized in that the flue gas
Air-introduced machine and chimney are set after treatment facility, system pressure is controlled by air-introduced machine.
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| CN110986054A (en) * | 2019-12-18 | 2020-04-10 | 北京科太亚洲生态科技股份有限公司 | Sulfate rectification residue incineration and reduction integrated device and process |
| CN111715181A (en) * | 2020-05-06 | 2020-09-29 | 安徽紫荆花壁纸股份有限公司 | Production system and method of environment-friendly wall decoration material |
| CN111735062A (en) * | 2020-06-29 | 2020-10-02 | 中国科学院过程工程研究所 | Low-pollution-emission sludge resource incineration method and system device |
| CN112063848A (en) * | 2020-02-28 | 2020-12-11 | 湖南锐异资环科技有限公司 | Metallurgical furnace for treating copper-containing sludge and treatment method thereof |
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