CN106642134A - Method and system for combined treatment of household rubbish and fly ash - Google Patents
Method and system for combined treatment of household rubbish and fly ash Download PDFInfo
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- CN106642134A CN106642134A CN201611079403.5A CN201611079403A CN106642134A CN 106642134 A CN106642134 A CN 106642134A CN 201611079403 A CN201611079403 A CN 201611079403A CN 106642134 A CN106642134 A CN 106642134A
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- pyrolysis
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- oil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/302—Treating pyrosolids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/303—Burning pyrogases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/60—Separating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/104—Combustion in two or more stages with ash melting stage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/50—Fluidised bed furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50203—Waste pyrolysis, gasification or cracking in a mechanically fluidised bed, e.g. obtained by a centrifugal force
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50204—Waste pre-treatment by pyrolysis, gasification or cracking
Abstract
The invention discloses a method and system for combined treatment of household rubbish and fly ash. The method comprises the steps of conducting pretreatment on the household rubbish, and obtaining the smashed and pretreated rubbish in which inorganic substances are removed; conducting drying treatment and pyrolysis treatment on the pretreated rubbish in a revolving bed pyrolyzing furnace so as to obtain pyrolytic carbon and pyrolytic oil gas; conducting oil-gas separation treatment on the pyrolytic oil gas so as to obtain pyrolytic tar and pyrolysis gas; burning the pyrolysis gas and the fly ash in a fusion furnace so as to make the fly ash fuse and solidify heavy metals to obtain a glassy-state solid substance. According to the method, harmless and reduction treatment of the household and the fly ash can be achieved, the cost is low, the method is environmentally friendly, and the method is particularly applicable to industrialized application and promotion.
Description
Technical field
The present invention relates to field of environment engineering, specifically, the present invention relates to the side of house refuse and flying dust Combined Treatment
Method and system.
Background technology
With it is economical develop rapidly, the continuous growth of population and the increasingly raising of living standards of the people, China's life
The yield of rubbish is also sharply increased, about 200,000,000 tons of current Municipal Solid Waste in China year yield, and annual also left with 10%
Right speed increases, and to environment very big burden is caused, and has 2/3 predicament for facing " garbage-surrounded city " in national big city.
It is unsaleable tired that garbage disposal at present conventional landfill, composting mode are absorbed in a large amount of lands used of occupancy, composting production
Border, and the mode of incineration treatment of garbage cannot break away from all the time the problem of bioxin pollution, and substantial amounts of flying dust is produced, flying dust
Process can not show a candle to people's will, become link the weakest in consumer waste incineration overall process Environmental capacity and risk management.
At present in the world flying dust process mainly has soil (including geology) to dispose and building materialsization utilize two technology paths.But
It is that China's domestic garbage incineration flyash there are still problems in terms of clay treatment.Due to yield it is huge, hazardous waste
Security landfill field limited space, it is impossible to meet flying dust and dispose needs, correspondingly admission high cost, there is bioxin in the middle of practice
Class and part heavy metal (such as Pb) are difficult to stably reach the problem into the standard of sanitary filling field.Aspect is utilized in building materials,
Cement kiln synergic processing flying dust (and sintering similar therewith prepares haydite technique) have alternative part material, treating capacity compared with
Big, bioxin can completely destroy removals, the resource more advantage such as thorough, relative inexpensiveness by fire, but the high chlorine of flying dust, high-alkali
Characteristic causes that water-washing pre-treatment must be carried out into before cement kiln, reluctant washing waste water is produced, while also resulting in
The content of heavy metal increases more than several times in cement, causes pollution transportation, diffusion and extends, and does not meet dangerous waste disposal
" environmental risk minimum " principle.
Thus, the processing method of current house refuse and flying dust still has much room for improvement.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this purpose, the present invention
One purpose is the method and system for proposing house refuse and flying dust Combined Treatment, and using the method and system life can be realized
Rubbish living and the innoxious of flying dust, minimizing are processed, and cost is relatively low, environmentally friendly, be particularly well-suited to industrialization promotion and
Using.
In a kind of method that a first aspect of the present invention, the present invention propose house refuse and flying dust Combined Treatment.According to
Embodiments of the invention, the method includes：House refuse is carried out into pretreatment, and the pre- place after being removed inorganic matters and crushing
Reason rubbish；The pretreating waste is dried into process and pyrolysis processing in revolving bed pyrolysis oven, to obtain pyrolytic carbon
With pyrolysis oil gas；The pyrolysis oil gas is carried out into Oil-gas Separation process, to obtain pyrolysis oil and pyrolysis gas；And by the heat
Vent one's spleen and burnt in melting furnace with flying dust, to make the fusing fly ash curing heavy metal, obtain the solidss of glassy state.
Thus, the method for house refuse according to embodiments of the present invention and flying dust Combined Treatment by will remove metal,
The house refuse of the inorganic matters such as glass, fragment of brick is crushed, and is supplied to revolving bed pyrolysis oven and is dried and pulverization process, is pyrolyzed
Charcoal and pyrolysis oil gas, the pyrolysis gas that pyrolysis oil gas Jing gas-liquid separations are obtained are passed through the burning of fusing fly ash stove, there is provided fusing fly ash institute
The heat for needing, makes fusing fly ash curing heavy metal, to obtain glassy state solidfied material up to standard, carries out direct landfill disposal.By
This, using the method for the present invention Combined Treatment of house refuse and flying dust can be realized, the fuel gas needed for fusing fly ash stove by
The pyrolysis gas that domestic garbage pyrolysis are produced are provided, and the pyrolysis product for making house refuse has obtained reasonable utilization, greatly reduced place
Reason cost, reduces the energy consumption needed for fusing fly ash stove, and pollutant bioxin will not be produced in whole processing procedure, to environment friend
It is good, and the innoxious of the method, minimizing level are high, are particularly well-suited to industrialization promotion and application.
In addition, the method for house refuse according to the above embodiment of the present invention and flying dust Combined Treatment can also have it is as follows
Additional technical characteristic：
In some embodiments of the invention, the method for above-mentioned house refuse and flying dust Combined Treatment is further included：Will
The pyrolytic carbon carries out gasification process in fluidized gasification device, to obtain gasification gas；Using the gasification gas as
The fuel of the revolving bed pyrolysis oven is used.Thus, it is possible to significantly reduce the operating cost of revolving bed pyrolysis oven.
In some embodiments of the invention, the pretreatment includes：The filter of artificial separation, magnetic separation, crushing and heap.Thus,
The inorganic matters such as metal, glass, fragment of brick in house refuse can be effectively removed, by carrying out heap filter, house refuse can be made
Moisture content be less than 40 weight %.
In some embodiments of the invention, the moisture content of the pretreating waste is less than 40 weight %.Thus, it is possible to aobvious
Write the efficiency for improving follow-up pyrolysis processing.
In some embodiments of the invention, the revolving bed pyrolysis oven has dry section and pyrolysis zone, in the drying
The temperature that the dried is carried out in area is 300～400 degrees Celsius, and the temperature of the pyrolysis processing is carried out in the pyrolysis zone
Spend for 600～900 degrees Celsius.Thus, it is possible to house refuse to be effectively fully dried and is pyrolyzed generation pyrolytic carbon and pyrolysis oil
Gas.
In a second aspect of the present invention, the present invention proposes a kind of house refuse and flying dust joint of enforcement above-described embodiment
The system of the method for process.Embodiments in accordance with the present invention, the system includes：Pretreatment unit, the pretreatment unit has
House refuse entrance and pretreating waste are exported, and the pretreatment unit is suitable to carry out pretreatment to the house refuse, so as to
Remove inorganic matters and house refuse is crushed, obtain pretreating waste；Revolving bed pyrolysis oven, the revolving bed is pyrolyzed stove
There is the outlet of pretreating waste entrance, oil gas vent and pyrolytic carbon, the pretreating waste entrance is exported with the pretreating waste
It is connected；Gas and oil separating plant, the gas and oil separating plant has oil gas entrance, pyrolysis gas outlet and pyrolysis oil export, the oil
Gas entrance is connected with the oil gas vent；There are melting furnace, the melting furnace flying dust entrance, pyrolysis gas entrance and solidss to go out
Mouthful, the pyrolysis gas entrance is connected with the pyrolysis gas outlet, and the pyrolysis gas are suitable for the burning of flying dust in the melting furnace
Heat is provided.
Thus, the system of house refuse according to embodiments of the present invention and flying dust Combined Treatment, first with pretreatment dress
Put the inorganic matters such as removing metal, glass, fragment of brick and crushed, obtain pretreating waste；Secondly pretreating waste is directly supplied
To being dried to revolving bed pyrolysis oven and pulverization process, pyrolytic carbon and pyrolysis oil gas are obtained；Finally it is pyrolyzed oil gas Jing oil gas point
It is passed through in melting furnace from the isolated pyrolysis gas of device, the heat for needed for fusing fly ash is provided, makes fusing fly ash solidification weight
Metal, to obtain glassy state solidfied material up to standard, carries out direct landfill disposal.Thus, using the above embodiment of the present invention
System can realize the Combined Treatment of house refuse and flying dust, and the fuel gas needed for fusing fly ash stove is produced by domestic garbage pyrolysis
Pyrolysis gas provide, the pyrolysis product for making house refuse obtained reasonable utilization, greatly reduced processing cost, reduces flying dust
Energy consumption needed for melting furnace, will not produce pollutant bioxin in whole processing procedure, environmentally friendly, and the system is harmless
Change, minimizing level are high, are particularly well-suited to industrialization promotion and application.
In addition, the system of house refuse according to the above embodiment of the present invention and flying dust Combined Treatment can also have it is as follows
Additional technical characteristic：
In some embodiments of the invention, the system of above-mentioned house refuse and flying dust Combined Treatment is further included：
Fluidized gasification device, the fluidized gasification device has pyrolytic carbon entrance and gasification gas exit, the heat
Solution charcoal entrance is connected with pyrolytic carbon outlet, and the gasification gas exports the regenerative gas spoke with the revolving bed pyrolysis oven
Penetrate pipe burner to be connected.
In some embodiments of the invention, the pretreatment unit includes magnetic plant, the disintegrating apparatus being sequentially connected
Cheat with heap filter.
In some embodiments of the invention, there is dry section and pyrolysis zone in the revolving bed pyrolysis oven.
In some embodiments of the invention, the revolving bed pyrolysis oven be without heat carrier heat accumulating type rotating bed pyrolysis oven,
Thermal source without heat carrier heat accumulating type rotating bed pyrolysis oven is heat storage type gas radiation pipe burner.
The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment
It is substantially and easy to understand, wherein：
Fig. 1 is the method flow schematic diagram of house refuse according to an embodiment of the invention and flying dust Combined Treatment；
Fig. 2 is the method flow schematic diagram of the house refuse according to further embodiment of the present invention and flying dust Combined Treatment；
Fig. 3 is the system structure diagram of house refuse according to an embodiment of the invention and flying dust Combined Treatment；
Fig. 4 is the system structure diagram of the house refuse according to further embodiment of the present invention and flying dust Combined Treatment；
Fig. 5 is the system structure diagram of the house refuse according to further embodiment of the present invention and flying dust Combined Treatment.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In describing the invention, it is to be understood that unless otherwise clearly defined and limited, term " connected " should do
Broadly understood, for example, it may be fixedly connected, or be detachably connected, or it is integral；Can be mechanically connected, also may be used
Be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals
Or the interaction relationship of two elements, unless otherwise clearly restriction.For the ordinary skill in the art, can be with
Above-mentioned term concrete meaning in the present invention is understood as the case may be.
In a kind of method that a first aspect of the present invention, the present invention propose house refuse and flying dust Combined Treatment.According to
Embodiments of the invention, the method includes：House refuse is carried out into pretreatment, and the pre- place after being removed inorganic matters and crushing
Reason rubbish；The pretreating waste is dried into process and pyrolysis processing in revolving bed pyrolysis oven, to obtain pyrolytic carbon
With pyrolysis oil gas；The pyrolysis oil gas is carried out into Oil-gas Separation process, to obtain pyrolysis oil and pyrolysis gas；And by the heat
Vent one's spleen and burnt in melting furnace with flying dust, to make the fusing fly ash curing heavy metal, obtain the solidss of glassy state.
The method of house refuse according to embodiments of the present invention and flying dust Combined Treatment is described in detail below, is referred to
Fig. 1 and Fig. 2, the method includes：
S100：Pretreatment
In the step, house refuse is carried out into pretreatment, and the pretreating waste after being removed inorganic matters and crushing.Tool
Body ground, containing inorganic matters such as part metals, glass, fragments of brick in house refuse, this kind of inorganic matters cannot be in follow-up pyrolysis processing
Generating the resource such as pyrolytic carbon or pyrolysis oil gas, and the house refuse for being mixed with inorganic matters is carried out into pyrolysis processing can also increase at pyrolysis
The energy consumption of reason simultaneously reduces the efficiency of pyrolysis processing.Embodiments in accordance with the present invention, inventor's discovery, by house refuse heat is being carried out
Before solution process, the inorganic matters such as metal therein, glass, fragment of brick are removed in advance, and house refuse is crushed, Ke Yixian
Write the efficiency and reducing energy consumption for improving pyrolysis processing.
Embodiments in accordance with the present invention, the method for pretreatment is carried out to house refuse can include artificial separation, magnetic separation, powder
The filter of broken and heap.Embodiments in accordance with the present invention, can efficiently by the glass being mixed with house refuse, fragment of brick by artificial separation
It is separated off Deng inorganic matters；Efficiently the magnetic metal of the tool being mixed with house refuse can be removed by magnetic separation；Further
Heap filter hole is sent into after the house refuse for removing inorganic matters is crushed, filters to reduce the moisture content of pretreating waste by heap, sent out
A person of good sense has found, if the moisture content of pretreating waste is too high, it will the efficiency for making follow-up dried and pyrolysis processing is reduced, energy
Consumption increase, pretreating waste heap according to a particular embodiment of the invention, can be filtered to moisture content and be less than 40 weight %, thus,
The efficiency of dried and pyrolysis processing can be significantly improved, and reduces the energy consumption for processing.
S200：Dried and pyrolysis processing
In the step, pretreating waste is dried into process and pyrolysis processing in revolving bed pyrolysis oven, to obtain
Pyrolytic carbon and pyrolysis oil gas.Specifically, revolving bed pyrolysis oven can be adopted without heat carrier heat accumulating type rotating bed, without heat carrier accumulation of heat
Formula revolving bed includes that revolving bed is pyrolyzed chamber, ring-shaped furnace bottom and is located at the upper and lower regenerative gas radial canal combustion of ring-shaped furnace bottom respectively
The mechanism such as burner and oil gas vent, discharging, heat storage type gas radiation pipe burner is arranged in annular furnace wall, by transformation of burning
CO, CH that absorption is obtained4Deng gas, the heat needed for refuse pyrolysis is provided in thermal-radiating mode.Ring-shaped furnace bottom and upper radiation
Pipe intermediate arrangement has tar spray equipment, and the flue gas in radial canal completely cuts off with the atmosphere in revolving bed, and revolving bed is in anaerobic shape
State.
Embodiments in accordance with the present invention, revolving bed pyrolysis oven along the direction that ring-shaped furnace bottom is rotated be disposed with dry section and
Pyrolysis zone, in dry section process is dried to pretreating waste, further to remove the moisture in pretreating waste, and then
Pyrolysis processing is carried out to pretreating waste in pyrolysis zone, to obtain pyrolytic carbon and pyrolysis oil gas.
Embodiments in accordance with the present invention, the temperature of dried is 300～400 degrees Celsius, it is possible thereby to further remove
Moisture in pretreating waste, improves the efficiency of pyrolysis processing.Embodiments in accordance with the present invention, the temperature of pyrolysis processing is 600
～900 degrees Celsius, it is possible thereby to the pretreating waste for making drying is fully pyrolyzed, to obtain pyrolytic carbon and pyrolysis oil gas.
S210：Gasification process
In the step, the pyrolytic carbon obtained in S200 is carried out into gasification process in fluidized gasification device, to obtain
Gasification gas.Specifically, the pyrolytic carbon for being obtained by refuse pyrolysis has certain combustion heat, belongs to low-calorie energy product,
By the way that pyrolytic carbon is carried out into gasification process in fluidized gasification device, pyrolytic carbon can be made to be converted into the higher gasification of coal of calorific value
Gas.
S220：The gasification gas that gasification process is obtained is used as the fuel gas of revolving bed pyrolysis oven
In the step, the regenerative gas that the higher gasification gas of calorific value is passed through in revolving bed pyrolysis oven will be obtained in S210
Radiant tube burner is burnt, and is used as the fuel of revolving bed pyrolysis oven, thus, it is possible to significantly reduce revolving bed pyrolysis oven
Energy consumption.
S300：Oil-gas Separation process
In the step, the pyrolysis oil gas obtained in S200 is carried out into Oil-gas Separation process, to obtain pyrolysis oil and pyrolysis
Gas.Specifically, spray Quench can be carried out to the pyrolysis oil gas that domestic garbage pyrolysis are produced, makes the pyrolysis oil cooling in pyrolysis oil gas
Solidifying, collection is available for fluidized gasification device to use as fuel；And after isolated pyrolysis gas are purified, can serve as follow-up
The fuel gas of fusing fly ash stove in melting and solidification process.
S400：Melting and solidification process
In the step, pyrolysis gas are burnt with flying dust in melting furnace, to make fusing fly ash curing heavy metal, obtained
To the solidss of glassy state.Specifically, flying dust is the product that waste incineration is obtained, wherein containing substantial amounts of heavy metal element and
SiO2Deng oxide, directly discharge can cause greatly pollution to environment.The method of the present invention is by the way that pyrolysis gas and flying dust are existed
Burnt in melting furnace, make the heavy metal melting and solidification in flying dust be the glassy solids thing for meeting standard of landfill, realized
The harmless treatment of flying dust.Additionally, the fuel gas needed for fusing fly ash stove is provided by the pyrolysis gas that domestic garbage pyrolysis are produced, make
The pyrolysis product of house refuse has obtained reasonable utilization, while reducing the cost of fusing fly ash cured.
Thus, the method for house refuse according to embodiments of the present invention and flying dust Combined Treatment by will remove metal,
The house refuse of the inorganic matters such as glass, fragment of brick is crushed, and is supplied to revolving bed pyrolysis oven and is dried and pulverization process, is pyrolyzed
Charcoal and pyrolysis oil gas, the pyrolysis gas that pyrolysis oil gas Jing gas-liquid separations are obtained are passed through the burning of fusing fly ash stove, there is provided fusing fly ash institute
The heat for needing, makes fusing fly ash curing heavy metal, to obtain glassy state solidfied material up to standard, carries out direct landfill disposal.By
This, using the method for the present invention Combined Treatment of house refuse and flying dust can be realized, the fuel gas needed for fusing fly ash stove by
The pyrolysis gas that domestic garbage pyrolysis are produced are provided, and the pyrolysis product for making house refuse has obtained reasonable utilization, greatly reduced place
Reason cost, reduces the energy consumption needed for fusing fly ash stove, and pollutant bioxin will not be produced in whole processing procedure, to environment friend
It is good, and the innoxious of the method, minimizing level are high, are particularly well-suited to industrialization promotion and application.
In a second aspect of the present invention, the present invention proposes a kind of side for implementing above-mentioned house refuse and flying dust Combined Treatment
The system of method.Embodiments in accordance with the present invention, the system includes：Pretreatment unit 100, revolving bed pyrolysis oven 200, Oil-gas Separation
Device 300 and melting furnace 400.
Wherein, pretreatment unit 100 has house refuse entrance 101 and pretreating waste outlet 102, pretreatment unit
100 are suitable to carry out pretreatment to house refuse, to remove inorganic matters and house refuse to be crushed, obtain pretreatment rubbish
Rubbish；Revolving bed pyrolysis oven 200 has pretreating waste entrance 201, oil gas vent 202 and pyrolytic carbon outlet 203, pretreating waste
Entrance 201 is connected with pretreating waste outlet 102；Gas and oil separating plant 300 has oil gas entrance 301, the and of pyrolysis gas outlet 302
Pyrolysis oil export 303, oil gas entrance 301 is connected with oil gas vent 202；There is melting furnace 400 flying dust entrance 401, pyrolysis gas to enter
Mouthfuls 402 and solidss outlet 403, pyrolysis gas entrance 402 is connected 302 with pyrolysis gas outlet, and pyrolysis gas are suitable in melting furnace winged
The burning of ash provides heat.
The system of house refuse according to embodiments of the present invention and flying dust Combined Treatment is carried out below with reference to Fig. 3 and Fig. 4
Describe in detail：
There is embodiments in accordance with the present invention, pretreatment unit 100 house refuse entrance 101 and pretreating waste to export
102, pretreatment unit 100 is suitable to carry out pretreatment to house refuse, to remove inorganic matters and house refuse to be crushed,
Obtain pretreating waste.Specifically, containing inorganic matters such as part metals, glass, fragments of brick in house refuse, this kind of inorganic matters cannot
The resource such as pyrolytic carbon or pyrolysis oil gas is generated in follow-up pyrolysis processing, and is carried out the house refuse of inorganic matters is mixed with pyrolysis
Reason can also increase the energy consumption of pyrolysis processing and reduce the efficiency of pyrolysis processing.Embodiments in accordance with the present invention, inventor's discovery,
House refuse is carried out before pyrolysis processing, is in advance removed the inorganic matters such as metal therein, glass, fragment of brick, and will life rubbish
Rubbish is crushed, and can significantly improve the efficiency and reducing energy consumption of pyrolysis processing.
Embodiments in accordance with the present invention, pretreatment unit 100 includes magnetic plant 110, the disintegrating apparatus 120 being sequentially connected
With heap filter hole 130.Magnetic plant 110 is suitable to remove the metal being mixed with house refuse, and disintegrating apparatus 120 are suitable to house refuse
Crush, heap filter hole 130 is suitable to for house refuse to carry out heap filter process, to reduce the moisture content of house refuse.Inventor's discovery,
If the moisture content of pretreating waste is too high, it will the efficiency for making follow-up dried and pyrolysis processing is reduced, energy consumption increase, root
According to the specific embodiment of the present invention, pretreating waste heap can be filtered to moisture content less than 40 weight %, thus, it is possible to significantly carry
The efficiency of high dried and pyrolysis processing, and reduce the energy consumption for processing.
Embodiments in accordance with the present invention, revolving bed pyrolysis oven 200 has pretreating waste entrance 201, the and of oil gas vent 202
Pyrolytic carbon outlet 203, revolving bed pyrolysis oven 200 is suitable to for pretreating waste process and heat are dried in revolving bed pyrolysis oven
Solution process, to obtain pyrolytic carbon and pyrolysis oil gas.Embodiments in accordance with the present invention, revolving bed pyrolysis oven 200 is without heat carrier
Heat accumulating type rotating bed pyrolysis oven, the thermal source without heat carrier heat accumulating type rotating bed pyrolysis oven is heat storage type gas radiation pipe burner.
Specifically, revolving bed pyrolysis oven can be adopted without heat carrier heat accumulating type rotating bed, and without heat carrier heat accumulating type rotating bed rotation is included
Bed pyrolysis chamber, ring-shaped furnace bottom and it is located at the upper and lower heat storage type gas radiation pipe burner of ring-shaped furnace bottom respectively and oil gas goes out
Mouthful, the mechanism such as discharging, heat storage type gas radiation pipe burner is arranged in annular furnace wall, the CO that obtained by the pressure-variable adsorption that burns,
CH4Deng gas, the heat needed for refuse pyrolysis is provided in thermal-radiating mode.Ring-shaped furnace bottom has Jiao with upper radial canal intermediate arrangement
Oily spray equipment, the flue gas in radial canal completely cuts off with the atmosphere in revolving bed, and revolving bed is in anaerobic state.
There is dry section 210 and pyrolysis zone 220, dry section in embodiments in accordance with the present invention, revolving bed pyrolysis oven 200
210 are suitable to be dried pretreating waste process, and pyrolysis zone 220 is suitable to carry out at pyrolysis the pretreatment of drying process
Reason.
The temperature for being suitable to arrange in embodiments in accordance with the present invention, dry section 210 is 300～400 degrees Celsius, is thus existed
Process is dried under 300～400 degrees Celsius, the moisture in pretreating waste can be further removed, pyrolysis processing is improved
Efficiency.Embodiments in accordance with the present invention, the temperature for being suitable in pyrolysis zone 220 arrange is 600～900 degrees Celsius, thus 600～
900 degrees Celsius carry out pyrolysis processing, and the pretreating waste that can make drying is fully pyrolyzed, to obtain pyrolytic carbon and pyrolysis oil
Gas.
Embodiments in accordance with the present invention, gas and oil separating plant 300 has oil gas entrance 301, pyrolysis gas outlet 302 and pyrolysis
Oil export 303, oil gas entrance 301 is connected with oil gas vent 202, and gas and oil separating plant 300 is suitable to for pyrolysis oil gas to carry out oil gas
Separating treatment, to obtain pyrolysis oil and pyrolysis gas.Specifically, the pyrolysis oil gas that domestic garbage pyrolysis are produced can be sprayed
Quench is drenched, the pyrolysis oil in pyrolysis oil gas is condensed, collection is available for fluidized gasification device to use as fuel；And it is isolated
Pyrolysis gas it is purified after, can serve as the fuel gas of fusing fly ash stove in subsequent melt cured.
Embodiments in accordance with the present invention, melting furnace 400 has the outlet of flying dust entrance 401, pyrolysis gas entrance 402 and solidss
403, pyrolysis gas entrance 402 is connected 302 with pyrolysis gas outlet, and pyrolysis gas are suitable for the burning of flying dust in melting furnace and provide heat,
Melting furnace 400 is suitable to that pyrolysis gas are burnt with flying dust in melting furnace, to make fusing fly ash curing heavy metal, obtains glass
The solidss of glass state.Specifically, flying dust is the product that waste incineration is obtained, wherein containing substantial amounts of heavy metal element and SiO2Deng
Oxide, directly discharge can cause greatly pollution to environment.The method of the present invention by by pyrolysis gas and flying dust in melting furnace
In burnt, make the heavy metal melting and solidification in flying dust be the glassy solids thing for meeting standard of landfill, realize flying dust
Harmless treatment.Additionally, the fuel gas needed for fusing fly ash stove is provided by the pyrolysis gas that domestic garbage pyrolysis are produced, life rubbish is made
The pyrolysis product of rubbish has obtained reasonable utilization, while reducing the cost of fusing fly ash cured.
Embodiments in accordance with the present invention, with reference to Fig. 4, the system of above-mentioned house refuse and flying dust Combined Treatment is further wrapped
Include：Fluidized gasification device 500, fluidized gasification device 500 has pyrolytic carbon entrance 501 and gasification gas exit 502, pyrolysis
Charcoal entrance 501 is connected with pyrolytic carbon outlet 203, and gasification gas outlet 502 is radiated with the regenerative gas of revolving bed pyrolysis oven 200
Pipe burner 20 is connected, and fluidized gasification device 500 is suitable to for pyrolytic carbon to carry out gasification process, to obtain gasification gas.Tool
Body ground, the pyrolytic carbon obtained by refuse pyrolysis has certain combustion heat, belongs to low-calorie energy product, by by pyrolytic carbon
Gasification process is carried out in fluidized gasification device 500, pyrolytic carbon can be made to be converted into the higher gasification gas of calorific value, and then will
Gasification gas is passed through the radiant tube burner in revolving bed pyrolysis oven 200, uses as the fuel of revolving bed pyrolysis oven 200, by
This, can significantly reduce the energy consumption of revolving bed pyrolysis oven 200.
Thus, the system of house refuse according to embodiments of the present invention and flying dust Combined Treatment, is removed using pretreatment unit
Remove the inorganic matters such as metal, glass, fragment of brick and crushed, obtain pretreating waste；Pretreating waste is directly fed to into rotation
Bed pyrolysis oven is dried and pulverization process, obtains pyrolytic carbon and pyrolysis oil gas；Pyrolysis oil gas Jing gas and oil separating plants are separated
To pyrolysis gas be passed through in melting furnace, for fusing fly ash provide needed for heat, fusing fly ash curing heavy metal is made, to obtain
Glassy state solidfied material up to standard, carries out direct landfill disposal.In addition, entering circulation of qi promoting to pyrolytic carbon by arranging fluidized gasification device
Change is processed and obtains gasification gas, gasification gas is returned and is used as the fuel of revolving bed pyrolysis oven, can significantly reduce rotation
The energy consumption of bed pyrolysis oven.Thus, can be realized at the joint of house refuse and flying dust using the system of the above embodiment of the present invention
Reason, the fuel gas needed for fusing fly ash stove is provided by the pyrolysis gas that domestic garbage pyrolysis are produced, and makes the pyrolysis product of house refuse
Reasonable utilization has been obtained, processing cost has been greatly reduced, the energy consumption needed for fusing fly ash stove has been reduced, in whole processing procedure not
Pollutant bioxin can be produced, it is environmentally friendly, and the innoxious of the system, minimizing level are high, are particularly well-suited to industrialization
Promotion and application.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only described
Property, and the present invention is limited never in any form.
Embodiment
Pending house refuse moisture content is 55wt%, into being grouped into such as table 1, pending flyash ingredient composition such as table 2.
The house refuse of table 1 is into being grouped into (wt%)
| Title | Fabric | Plastics | Paper | Wooden bamboo | Food waste | Dregs | Glass, metal | Amount to |
| Wet basis | 3.53 | 25.96 | 14.94 | 7.44 | 28.91 | 11.58 | 7.64 | 100 |
The component characteristic of the flying dust of table 2
| Composition | Numerical value/wt% | Heavy metal | Content/mg/L |
| Fe2O3 | 5.49 | Ni | 92.6 |
| MgO | 1.87 | Cd | 52.9 |
| CaO | 12.19 | Pb | 883.5 |
| TiO2 | 1.16 | Cu | 598.3 |
| Al2O3 | 20.42 | Zn | 7294.7 |
| SiO2 | 48.95 | Cr | 101.2 |
| K2O | 2.03 | ||
| Na2O | 1.72 |
It is with reference to Fig. 5, house refuse is preprocessed, sort out the fabric, plastics, glass and the metal that are wherein mixed with etc. inorganic
Thing, then after crushing, sending into heap filter hole carries out heap filter process, and the moisture content for making pretreating waste is less than 40wt%；
Pretreating waste is supplied in without heat carrier heat accumulating type rotating bed pyrolysis oven, first in dry section dried,
The temperature of dried is 350 degrees Celsius, removes the moisture in pretreating waste, and then is carried out at pyrolysis in pyrolysis zone
Reason, the temperature of pyrolysis processing is 700 degrees Celsius, obtains pyrolytic carbon and pyrolysis oil gas；
The pyrolytic carbon for obtaining feeding fluidized gasification device gasification installation is carried out into gasification process, to obtain gasification of coal
Gas, uses gasification gas as the fuel without heat carrier heat accumulating type rotating bed pyrolysis oven；
The pyrolysis oil gas for obtaining is carried out into Oil-gas Separation process, to obtain pyrolysis oil and pyrolysis gas；
Pyrolysis gas are burnt with flying dust in melting furnace, to make fusing fly ash curing heavy metal, glassy state is obtained
Solidss, the solidss for obtaining are filled.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of method of house refuse and flying dust Combined Treatment, it is characterised in that include：
House refuse is carried out into pretreatment, and the pretreating waste after being removed inorganic matters and crushing；
The pretreating waste is dried into process and pyrolysis processing in revolving bed pyrolysis oven, to obtain pyrolytic carbon and heat
Solution oil gas；
The pyrolysis oil gas is carried out into Oil-gas Separation process, to obtain pyrolysis oil and pyrolysis gas；And
The pyrolysis gas and flying dust are burnt in melting furnace, to make the fusing fly ash curing heavy metal, glass is obtained
The solidss of glass state.
2. the method for house refuse according to claim 1 and flying dust Combined Treatment, it is characterised in that further include：
The pyrolytic carbon is carried out into gasification process in fluidized gasification device, to obtain gasification gas；
Use the gasification gas as the fuel of the revolving bed pyrolysis oven.
3. the method for house refuse according to claim 1 and flying dust Combined Treatment, it is characterised in that the pretreatment bag
Include：The filter of artificial separation, magnetic separation, crushing and heap.
4. the method for house refuse according to claim 1 and flying dust Combined Treatment, it is characterised in that the pretreatment rubbish
The moisture content of rubbish is less than 40 weight %.
5. the method for house refuse according to claim 1 and flying dust Combined Treatment, it is characterised in that the revolving bed heat
Solution stove has dry section and pyrolysis zone, and the temperature that the dried is carried out in the dry section is 300～400 degrees Celsius,
The temperature that the pyrolysis processing is carried out in the pyrolysis zone is 600～900 degrees Celsius.
6. a kind of system for implementing the method for house refuse described in any one of claim 1～5 and flying dust Combined Treatment,
Characterized in that, including：
Pretreatment unit, the pretreatment unit has house refuse entrance and pretreating waste outlet, the pretreatment unit
It is suitable to carry out pretreatment to the house refuse, to remove inorganic matters and house refuse to be crushed, obtains pretreatment rubbish
Rubbish；
Revolving bed pyrolysis oven, the revolving bed pyrolysis oven has the outlet of pretreating waste entrance, oil gas vent and pyrolytic carbon, described
Pretreating waste entrance is connected with pretreating waste outlet；
Gas and oil separating plant, the gas and oil separating plant has oil gas entrance, pyrolysis gas outlet and pyrolysis oil export, the oil gas
Entrance is connected with the oil gas vent；
Melting furnace, the melting furnace have flying dust entrance, pyrolysis gas entrance and solidss outlet, the pyrolysis gas entrance with it is described
Pyrolysis gas outlet is connected, and the pyrolysis gas are suitable for the burning of flying dust in the melting furnace and provide heat.
7. system according to claim 6, it is characterised in that further include：
Fluidized gasification device, the fluidized gasification device has pyrolytic carbon entrance and gasification gas exit, the pyrolytic carbon
Entrance is connected with pyrolytic carbon outlet, and the gasification gas exports the regenerative gas radial canal with the revolving bed pyrolysis oven
Burner is connected.
8. system according to claim 6, it is characterised in that the pretreatment unit includes that the magnetic separation being sequentially connected sets
Standby, disintegrating apparatus and heap filter hole.
9. system according to claim 6, it is characterised in that there is dry section and pyrolysis in the revolving bed pyrolysis oven
Area.
10. system according to claim 6, it is characterised in that the revolving bed pyrolysis oven is without the rotation of heat carrier heat accumulating type
Rotated bed pyrolysis oven, the thermal source without heat carrier heat accumulating type rotating bed pyrolysis oven is heat storage type gas radiation pipe burner.
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| CN112619561A (en) * | 2020-11-27 | 2021-04-09 | 深圳市捷晶能源科技有限公司 | Heavy metal-containing material treatment system and treatment method thereof |
| CN115505726A (en) * | 2022-09-29 | 2022-12-23 | 无锡雪浪环境科技股份有限公司 | Recycling treatment method for metal-containing organic solid wastes |
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