CN106391673A - System and method for treating household garbage - Google Patents
System and method for treating household garbage Download PDFInfo
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- CN106391673A CN106391673A CN201611090069.3A CN201611090069A CN106391673A CN 106391673 A CN106391673 A CN 106391673A CN 201611090069 A CN201611090069 A CN 201611090069A CN 106391673 A CN106391673 A CN 106391673A
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- pyrolysis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Abstract
The invention discloses a system and a method for treating household garbage. The system comprises a pretreatment unit, a rotating bed pyrolysis furnace, an oil-gas separation purifying unit, a circulating fluidized bed boiler and a steam turbine generator set, wherein the pretreatment unit has a household garbage inlet, an inorganic garbage outlet and an organic garbage outlet; the rotating bed pyrolysis furnace forms a feed area, a drying area, a pyrolysis area and a discharge area in sequence in the furnace bottom rotating direction; an organic garbage inlet is formed in the feed area; a high-temperature oil outlet is formed in the pyrolysis area; a pyrolysis carbon outlet is formed in the discharge area; the oil-gas separation purifying unit has a high-temperature oil inlet, a purifying pyrolysis gas outlet and a pyrolysis oil outlet; the circulating fluidized bed boiler has a pyrolysis carbon inlet, a pyrolysis oil inlet, a purifying pyrolysis gas inlet and an overheat steam outlet; and the steam turbine generator set has an overheat steam inlet. The system can solve the problem that pyrolysis oil and pyrolysis gas are difficult to use in the prior art, really realizes reduction, harmlessness and resourceful treatment of the garbage, and is excellent in economic benefit.
Description
Technical field
The invention belongs to solid waste resource recovery process field, specifically, the present invention relates to processing house refuse
System and method.
Background technology
With economical develop rapidly, the increasingly raising of the continuous growth of population and living standards of the people, China lives
The yield of rubbish also sharply increases, current Municipal Solid Waste in China year about 200,000,000 tons of yield, and annual also left with 10%
Right speed increases, and causes very big burden to environment, has 2/3 predicament facing " garbage-surrounded city " in national big city.
It is unsaleable tired that landfill that at present garbage disposal is commonly used, composting mode have been 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 the problem of two English pollutions all the time.Refuse pyrolysis method can make house refuse exist
Decompose under anaerobic or anoxia condition, generate combustion gas, fuel oil, three kinds of recycling energy of solid carbon.But refuse pyrolysis
Gas impurity is more, and calorific value is relatively low, complicated component, is difficult to be utilized, and gasification gas calorific value is lower simultaneously, uses more tired
Difficult.
In house refuse, low temperature pyrogenation is under conditions of anaerobic or anoxic, by preprocessed for house refuse be heated to higher
Temperature, makes the organic matter in rubbish that pyrolysis and thermochemical study reaction to occur, generates H2、CO、CH4In imflammable gas, profit
Mixed liquor and the process of solid product.Because pyrolysis temperature is higher, most of pyrolysis oil can occur second pyrolysis to generate small molecule
Gas, the fuel gas of generation can heat use for pyrolysis installation, be that a kind of pollution is little, invest garbage disposal that is low, having returned
Technology.
Existing domestic garbage pyrolysis technology generally comprises pretreatment system, pyrolysis system, oil and gas separating system and purification
System etc., the subject matter that it exists has：(1) pyrolysis oil is difficult by, and refuse pyrolysis oil nature is complicated, corrosivity is high, viscosity
Larger, easily block pipeline, in actual motion, therefore need frequent maintenance shut-downs cleaning pipeline；(2) existing house refuse heat
Pyrolytic carbon obtained by solution technology also needs fluidized gasification, complex procedures, and deficiency in economic performance, initial outlay are also higher；(3) it is pyrolyzed
Contain compared with multi-metal in the pyrolytic carbon obtaining afterwards, need to carry out landfill disposal, it is impossible to sell directly as " fuel ", therefore to subtract
Quantification effect is bad, also may can bring secondary pollution；(4) existing domestic garbage pyrolysis technical products calorific value is relatively low, Er Qie great
Part refuse pyrolysis factory all build meagrely-populated area in, thus leading to pyrolysis oil gas charcoal excessive using difficult, investment cost, with
When to combustion apparatus also have be strict with it is more difficult to promote.
Therefore, the existing technology processing house refuse is further improved.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention
One purpose is to propose a kind of system and method processing house refuse, can solve presence in prior art using this system
Pyrolysis oil and the problem that is difficult by of pyrolysis gas, thus being truly realized the minimizing of rubbish, innoxious and recycling treatment,
There is good economic benefit.
In one aspect of the invention, the present invention proposes a kind of system processing house refuse.Reality according to the present invention
Apply example, described system includes：
Pretreatment unit, described pretreatment unit has house refuse entrance, inorganic refuse outlet and organic waste outlet；
Revolving bed pyrolysis oven, in described revolving bed pyrolysis oven along furnace bottom rotation direction sequentially form feed zone, dry section,
Pyrolysis zone and discharge zone, described feed zone is provided with organic waste entrance, and described pyrolysis zone is provided with high-temperature oil gas outlet, described
Discharge zone is provided with pyrolytic carbon outlet, and described organic waste entrance is connected with the outlet of described organic waste；
Oil-gas Separation clean unit, described Oil-gas Separation clean unit has high-temperature oil gas entrance, purifies pyrolysis gas outlet
With pyrolysis oil export, the outlet of described high-temperature oil gas entrance and described high-temperature oil gas is connected, described purify pyrolysis gas outlet with described
Revolving bed pyrolysis oven is connected；
CFBB, described CFBB has pyrolytic carbon entrance, pyrolysis oil-in, purifies pyrolysis gas
Entrance and superheated steam outlet, the outlet of described pyrolytic carbon entrance and described pyrolytic carbon is connected, described pyrolysis oil-in and described heat
Solution oil export is connected, and described purification pyrolysis gas entrance is connected with described purification pyrolysis gas outlet；
Steam turbine generator group, described steam turbine generator group has superheated steam entrance, and described superheated steam enters
Mouth is connected with the outlet of described superheated steam.
Thus, the system of process house refuse according to embodiments of the present invention is passed through to process life rubbish using pretreatment unit
Rubbish, can significantly reduce the moisture content in house refuse, such that it is able to significantly improve the pyrolysis efficiency in follow-up pyrolytic process, and
And by pre-processing metal and the inorganic matter such as glass, fragment of brick that can effectively remove in house refuse, follow-up such that it is able to reduce
The energy consumption of revolving bed pyrolysis oven, improves the value of the pyrolytic carbon of follow-up generation simultaneously, and then passing through will be partly through oil gas
The purification pyrolysis gas of separating purifying device process gained supply and use as fuel to revolving bed pyrolysis oven, can significantly reduce this
The dependence of hot pyrolysis oven fuel to external world, and pyrolysis oven fuel cost can be reduced, it is anoxybiotic in revolving bed pyrolysis oven simultaneously
Environment, will not produce the pollutants such as two English therefore in pyrolytic process, therefore without the treatment facility that increase is extra, thus
Reduce the whole processing cost processing house refuse, supply secondly by by pyrolytic carbon, pyrolysis oil and the remaining pyrolysis gas that purify
Carry out direct combustion generation superheated steam to be used for producing high-grade electricity to CFBB, on the one hand can fully reclaim pyrolysis
Sensible heat in oil and latent heat, and reluctant waste water in a large number will not be produced, also there is not pyrolysis oil blocking pipeline, separately
On the one hand because pyrolytic carbon is loose broken, shattering process can be completed while from revolving bed pyrolysis furnace discharge, therefore enter
When in CFBB, the particle diameter of pyrolytic carbon is less, can improve the efficiency of combustion in CFBB, and after burning
A small amount of residue only can be produced.Thus, pyrolysis oil present in prior art can be solved using this system and pyrolysis gas are difficult to profit
Problem, thus being truly realized the minimizing of rubbish, innoxious and recycling treatment, has good economic benefit.
In addition, the system processing house refuse according to the above embodiment of the present invention can also have the technology added as follows
Feature：
In some embodiments of the invention, described pretreatment unit includes being sequentially connected sorting unit, concentration equipment,
Reducing mechanism and heap filter device.Thus, it is possible to effectively remove the impurity in house refuse, increase the value of pyrolytic carbon, subtract
Moisture content in few organic waste, reduces the energy consumption of follow-up revolving bed pyrolysis oven, obtains the less organic waste of particle diameter, after raising
Pyrolysis efficiency in continuous revolving bed pyrolysis oven.
In some embodiments of the invention, described Oil-gas Separation clean unit includes chilling spray equipment and purifies dress
Put, described high-temperature oil gas entrance and described pyrolysis oil export are arranged on described chilling spray equipment, described chilling spray equipment
It is additionally provided with cooling oil-in and pyrolysis gas outlet, described purification pyrolysis gas outlet is arranged on described purifier, described net
Gasifying device is additionally provided with pyrolysis gas entrance, and described pyrolysis gas outlet is connected with described pyrolysis gas entrance.Thus, height can be efficiently separated
Pyrolysis oil in warm oil gas and pyrolysis gas, reduce the temperature of pyrolysis oil and pyrolysis gas, simultaneously because using cooling oil to high-temperature oil gas
Carry out Quench spray, can avoid subsequently carrying out water-oil separating process, improve the economy processing house refuse system.
In another aspect of the invention, the present invention proposes a kind of method processing house refuse.According to the present invention's
Embodiment, methods described includes：
(1) house refuse is supplied and pre-processed to described pretreatment unit, to obtain inorganic refuse and organic rubbish
Rubbish；
(2) by described organic waste supply to described revolving bed pyrolysis oven feed zone so that described organic waste successively
Through described dry section and described pyrolysis zone, to obtain high-temperature oil gas and pyrolytic carbon, and described pyrolytic carbon is through described discharging
Area discharges；
(3) described high-temperature oil gas are supplied and carry out isolation of purified process to described Oil-gas Separation clean unit, to obtain
Purify pyrolysis gas and pyrolysis oil, and the described part purifying pyrolysis gas is supplied to described revolving bed pyrolysis oven；
(4) described another part purifying pyrolysis gas, described pyrolytic carbon and described pyrolysis oil are supplied to described recycle stream
Burnt in fluidized bed boiler, to obtain superheated steam；
(5) described superheated steam is supplied and generated electricity to described steam turbine generator group.
Thus, the method for process house refuse according to embodiments of the present invention is passed through to process life rubbish using pretreatment unit
Rubbish, can significantly reduce the moisture content in house refuse, such that it is able to significantly improve the pyrolysis efficiency in follow-up pyrolytic process, and
And by pre-processing metal and the inorganic matter such as glass, fragment of brick that can effectively remove in house refuse, follow-up such that it is able to reduce
The energy consumption of revolving bed pyrolysis oven, improves the value of the pyrolytic carbon of follow-up generation simultaneously, and then passing through will be partly through oil gas
The purification pyrolysis gas of separating purifying device process gained supply and use as fuel to revolving bed pyrolysis oven, can significantly reduce this
The dependence of hot pyrolysis oven fuel to external world, and pyrolysis oven fuel cost can be reduced, it is anoxybiotic in revolving bed pyrolysis oven simultaneously
Environment, will not produce the pollutants such as two English therefore in pyrolytic process, therefore without the treatment facility that increase is extra, thus
Reduce the whole processing cost processing house refuse, supply secondly by by pyrolytic carbon, pyrolysis oil and the remaining pyrolysis gas that purify
Carry out direct combustion generation superheated steam to be used for producing high-grade electricity to CFBB, on the one hand can fully reclaim pyrolysis
Sensible heat in oil and latent heat, and reluctant waste water in a large number will not be produced, also there is not pyrolysis oil blocking pipeline, separately
On the one hand because pyrolytic carbon is loose broken, shattering process can be completed while from revolving bed pyrolysis furnace discharge, therefore enter
When in CFBB, the particle diameter of pyrolytic carbon is less, can improve the efficiency of combustion in CFBB, and after burning
A small amount of residue only can be produced.Thus, pyrolysis oil present in prior art can be solved using the method and pyrolysis gas are difficult to profit
Problem, thus being truly realized the minimizing of rubbish, innoxious and recycling treatment, has good economic benefit.
In addition, the method processing house refuse according to the above embodiment of the present invention can also have the technology added as follows
Feature：
In some embodiments of the invention, in step (1), described pretreatment includes sorting process, at magnetic separation successively
Reason, pulverization process and heap filter are processed.Thus, it is possible to effectively remove the impurity in house refuse, increase the value of pyrolytic carbon,
Reduce the moisture content in organic waste, reduce the energy consumption of follow-up revolving bed pyrolysis oven, obtain the less organic waste of particle diameter, improve
Pyrolysis efficiency in follow-up revolving bed pyrolysis oven.
In some embodiments of the invention, step (3) is carried out according to the following step：(3-1) by described high-temperature oil gas and
Described cooling oil supplies and carries out heat exchange process to described Quench spray column, to obtain pyrolysis gas and pyrolysis oil；(3-2) by institute
State pyrolysis gas and supply and carry out purified treatment to described purifier, to be purified pyrolysis gas.Thus, height can be efficiently separated
Pyrolysis oil in warm oil gas and pyrolysis gas, simultaneously because carrying out Quench spray using cooling oil to high-temperature oil gas, can avoid subsequently entering
Row water-oil separating is processed, and improves the economy processing house refuse system.
In some embodiments of the invention, in step (1), the moisture content of described organic waste is not higher than 40wt%.
Thus, the energy consumption of follow-up revolving bed pyrolysis oven can be significantly reduced.
In some embodiments of the invention, in step (2), the temperature of described dry section is 300～400 degrees Celsius,
The temperature of described pyrolysis zone is 600～900 degrees Celsius.Thus, it is remarkably improved the pyrolysis efficiency in revolving bed pyrolysis oven.
The additional aspect of the present invention and advantage 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.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein：
Fig. 1 is the system structure diagram processing house refuse according to an embodiment of the invention；
Fig. 2 is the part knot of revolving bed pyrolysis oven in system according to the process house refuse of further embodiment of the present invention
Structure schematic diagram；
Fig. 3 is the system structure diagram of the process house refuse according to another embodiment of the present invention；
Fig. 4 is the method flow schematic diagram processing house refuse according to an embodiment of the invention；
Fig. 5 is the method flow schematic diagram of the process house refuse according to another embodiment of the present invention；
Fig. 6 is the system structure diagram of the process house refuse according to another embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limit unless otherwise clear and definite.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In one aspect of the invention, the present invention proposes a kind of system processing house refuse.Reality according to the present invention
Apply example, with reference to Fig. 1, this system includes：Pretreatment unit 100, revolving bed pyrolysis oven 200, Oil-gas Separation clean unit 300, follow
Circulation fluidized bed boiler 400 and steam turbine generator group 500.
According to embodiments of the invention, pretreatment unit 100 has house refuse entrance 101, inorganic refuse exports 102 and
Organic waste outlet 103, and be suitable to be pre-processed house refuse, to obtain inorganic refuse and organic waste.Thus, have
Beneficial to the treatment effeciency improving whole house refuse electricity generation system.
According to one embodiment of present invention, pretreatment unit 100 can include sorting unit, the magnetic separation dress being sequentially connected
Put, reducing mechanism and heap filter device (not shown).Thus, it is possible to effectively remove the impurity in house refuse, increase pyrolytic carbon
Value, reduces the moisture content in organic waste, reduces the energy consumption of follow-up revolving bed pyrolysis oven, obtains particle diameter less organic
Rubbish, improves pyrolysis efficiency in follow-up revolving bed pyrolysis oven.
Specifically, first house refuse is carried out sorting process, remove the bulks such as metal in house refuse, glass, fragment of brick
Inorganic matter；Then carry out magnetic separation process, removing the metal impurities in house refuse further, obtaining organic waste, thus increasing
The value of follow-up gained pyrolytic carbon；It is then passed through reducing mechanism, reduce the particle diameter of organic waste, be conducive to accelerating organic rubbish
Rubbish is in the pyrolysis of follow-up revolving bed pyrolysis oven；Finally, organic waste is carried out heap filter process, containing of organic waste can be significantly reduced
Water rate, advantageously reduces the energy consumption of follow-up revolving bed pyrolysis oven, thus reducing the whole process energy consumption processing house refuse system.
According to still a further embodiment, the moisture content in gained organic waste can be not higher than 40wt%.Thus,
The pyrolysis efficiency in follow-up revolving bed pyrolysis oven can be significantly improved.
According to embodiments of the invention, with reference to Fig. 1 and 2, revolving bed pyrolysis oven 200 sequentially forms along furnace bottom rotation direction
Feed zone 21, dry section 22, pyrolysis zone 23 and discharge zone 24, feed zone 21 is provided with organic waste entrance 201, and pyrolysis zone 23 sets
It is equipped with high-temperature oil gas outlet 202, discharge zone 24 is provided with pyrolytic carbon outlet 203, organic waste entrance 201 and organic waste outlet
103 are connected, and are suitable to for organic waste to sequentially pass through dry section and pyrolysis zone is processed, to obtain high-temperature oil gas and pyrolysis
Charcoal, and the pyrolytic carbon outlet discharge through setting in discharge zone for the gained pyrolytic carbon.
Specifically, revolving bed pyrolysis oven main equipment includes revolving bed pyrolysis oven, the burning of upper and lower regenerative gas radiant tube
The mechanism such as device and oil gas vent, discharging.Its furnace bottom is rotatable ring-shaped furnace bottom, positioned at upper and lower regenerative gas radiant tube
In the middle of burner, heat storage type gas radiation pipe burner is arranged in annular furnace wall, provides refuse pyrolysis institute in thermal-radiating mode
The heat needing.Ring-shaped furnace bottom and upper regenerative gas radiant tube intermediate arrangement have tar spray equipment, regenerative gas radiant tube
Interior flue gas is completely cut off with the atmosphere in revolving bed pyrolysis oven, and revolving bed pyrolysis oven is in anaerobic state.In pyrolysis zone end body of heater
Upper end setting high-temperature oil gas outlet, in order to the high-temperature oil gas producing during discharging refuse pyrolysis, end bottom of furnace body setting heat
Solution charcoal outlet, in order to discharge refuse pyrolysis charcoal, the discharging of revolving bed pyrolysis oven adopts double helix discharging machine.
According to one embodiment of present invention, the temperature of dry section and the temperature of pyrolysis zone are not particularly restricted, ability
Field technique personnel can be selected according to actual needs, and according to a specific embodiment of the present invention, the temperature of dry section can
Think 300～400 degrees Celsius, the temperature of pyrolysis zone can be 600～900 degrees Celsius.Thus, it is possible to significantly improve organic waste
Pyrolysis efficiency.
According to embodiments of the invention, Oil-gas Separation clean unit 300 has high-temperature oil gas entrance 301, purifies pyrolysis gas
Outlet 302 and pyrolysis oil export 303, high-temperature oil gas entrance 301 is connected with high-temperature oil gas outlet 202, purifies pyrolysis gas outlet 302
It is connected with revolving bed pyrolysis oven 200, and is suitable to for high-temperature oil gas to carry out isolation of purified process, to be purified pyrolysis gas and heat
Solution oil, and the part purifying pyrolysis gas is supplied to above-mentioned revolving bed pyrolysis oven.Thus, can efficiently separate in high-temperature oil gas
Pyrolysis oil and pyrolysis gas, reduce pyrolysis oil and the temperature of pyrolysis gas, improve the economy processing house refuse system.
According to one embodiment of present invention, with reference to Fig. 3, Oil-gas Separation clean unit 300 can include Quench spray dress
Put 31 and purifier 32, and high-temperature oil gas entrance 301 and pyrolysis oil export 303 are arranged on 31 on chilling spray equipment, and
And chilling spray equipment 31 is additionally provided with cooling oil-in 311 and pyrolysis gas outlet 312, purifies pyrolysis gas outlet 302 and be arranged on
On purifier 32, and purifier 32 is additionally provided with pyrolysis gas entrance 321, pyrolysis gas outlet 312 and pyrolysis gas entrance 321
It is connected, and be suitable to supply the high-temperature oil gas obtaining in revolving bed pyrolysis oven and cooling oil and carry out at heat exchange to Quench spray column
Reason, obtains pyrolysis gas and pyrolysis oil；And carry out purified treatment by separating the pyrolysis gas obtaining and supplying to purifier, obtain net
Change pyrolysis gas, then supplying a part for the purification obtaining pyrolysis gas makes to the radiant tube of revolving bed pyrolysis oven as fuel
With.Thus, can efficiently separate pyrolysis oil and the pyrolysis gas in high-temperature oil gas, reduce pyrolysis oil and the temperature of pyrolysis gas, simultaneously because
Quench spray is carried out to high-temperature oil gas using cooling oil, can avoid subsequently carrying out water-oil separating process, improve and process house refuse
The economy of system.Specifically, cooling oil can be the pyrolysis oil of cooling.
According to embodiments of the invention, with reference to Fig. 1, CFBB 400 has pyrolytic carbon entrance 401, pyrolysis oil
Entrance 402, purification pyrolysis gas entrance 403 and superheated steam outlet 404, pyrolytic carbon entrance 401 is connected with pyrolytic carbon outlet 203,
Pyrolysis oil-in 402 is connected with pyrolysis oil export 303, purifies pyrolysis gas entrance 403 and is connected with purifying pyrolysis gas outlet 302, and
It is suitable to the another part purifying pyrolysis gas, pyrolytic carbon and pyrolysis oil be burnt, to obtain superheated steam.Thus, pass through
By pyrolytic carbon, pyrolysis oil and remaining purify pyrolysis gas and supply carry out direct combustion to CFBB and produce superheated steam being used for
Produce high-grade electricity, on the one hand can fully reclaim sensible heat and latent heat in pyrolysis oil, and will not produce reluctant in a large number
, also there is not pyrolysis oil blocking pipeline, on the other hand because pyrolytic carbon is loose broken, from revolving bed pyrolysis oven in waste water
Shattering process can be completed, therefore the particle diameter of pyrolytic carbon is less when entering in CFBB, can improve while discharging
A small amount of residue only can be produced after efficiency of combustion in CFBB, and burning.Thus, can be solved now using this system
There is the problem that pyrolysis oil present in technology and pyrolysis gas are difficult by, thus being truly realized the minimizing of rubbish, innoxious
And recycling treatment, there is good economic benefit.
According to embodiments of the invention, steam turbine generator group 500 has superheated steam entrance 501, and superheated steam enters
Mouth 501 is connected with superheated steam outlet 404, and is suitable to superheated steam obtained above is generated electricity.Thus, it is advantageously implemented
The recycling of domestic garbage pyrolysis product.Specifically, the superheated steam producing in CFBB can be directly through master
Steam valve, regulating valve enter steam turbine, and partial heat energy is converted to the mechanical energy of turbine rotor rotation, drive synchronous generator rotation
Produce electric energy.
Thus, the system of process house refuse according to embodiments of the present invention is passed through to process life rubbish using pretreatment unit
Rubbish, can significantly reduce the moisture content in house refuse, such that it is able to significantly improve the pyrolysis efficiency in follow-up pyrolytic process, and
And by pre-processing metal and the inorganic matter such as glass, fragment of brick that can effectively remove in house refuse, follow-up such that it is able to reduce
The energy consumption of revolving bed pyrolysis oven, improves the value of the pyrolytic carbon of follow-up generation simultaneously, and then passing through will be partly through oil gas
The purification pyrolysis gas of separating purifying device process gained supply and use as fuel to revolving bed pyrolysis oven, can significantly reduce this
The dependence of hot pyrolysis oven fuel to external world, and pyrolysis oven fuel cost can be reduced, it is anoxybiotic in revolving bed pyrolysis oven simultaneously
Environment, will not produce the pollutants such as two English therefore in pyrolytic process, therefore without the treatment facility that increase is extra, thus
Reduce the whole processing cost processing house refuse, supply secondly by by pyrolytic carbon, pyrolysis oil and the remaining pyrolysis gas that purify
Carry out direct combustion generation superheated steam to be used for producing high-grade electricity to CFBB, on the one hand can fully reclaim pyrolysis
Sensible heat in oil and latent heat, and reluctant waste water in a large number will not be produced, also there is not pyrolysis oil blocking pipeline, separately
On the one hand because pyrolytic carbon is loose broken, shattering process can be completed while from revolving bed pyrolysis furnace discharge, therefore enter
When in CFBB, the particle diameter of pyrolytic carbon is less, can improve the efficiency of combustion in CFBB, and after burning
A small amount of residue only can be produced.Thus, pyrolysis oil present in prior art can be solved using this system and pyrolysis gas are difficult to profit
Problem, thus being truly realized the minimizing of rubbish, innoxious and recycling treatment, has good economic benefit.
As described above, the system of process house refuse according to embodiments of the present invention can have the advantages that selected from following at least
One of：
The system of process house refuse according to embodiments of the present invention requires no multiple in house refuse preprocessing process
Miscellaneous pretreatment can enter revolving bed pyrolysis oven and is pyrolyzed, substantially reduce pyrolytic process flow process, it is to avoid pretreatment effect
Problem really poor, that processing equipment fault rate is high.
Regenerative gas radiation in revolving bed pyrolysis oven in the system of process house refuse according to embodiments of the present invention
Flue gas in pipe burner is completely cut off with the pyrolysis atmosphere in revolving bed pyrolysis oven burner hearth, and rubbish is pyrolyzed under complete anoxic condition,
Two English pollutions will not be produced.
The system of process house refuse according to embodiments of the present invention is straight after the separated purification of the pyrolysis oil producing by being pyrolyzed
Tap into into burning in CFBB, the sensible heat in pyrolysis oil and latent heat can be reclaimed, and will not produce and be difficult in a large number
, there is not pyrolysis oil blocking pipeline in the waste water processing, solve simultaneously refuse pyrolysis oil be difficult to process and using ask
Topic.
The system of process house refuse according to embodiments of the present invention is sent directly into recycle stream by being pyrolyzed the pyrolytic carbon producing
Fluidized bed boiler is burnt, and only can produce a small amount of residue, is truly realized the minimizing of house refuse, innoxious and resource
Process.
The pyrolytic carbon of system domestic garbage pyrolysis generation of processs house refuse according to embodiments of the present invention, pyrolysis oil and
The superheated steam that remaining pyrolysis gas produce after entering burning in circulating fluid bed boiler enters steam turbine generator group and generates electricity, product
For the electric energy of cleaning, and the subsidy of national garbage power can be obtained, there is good economic benefit.
In another aspect of the invention, the present invention proposes a kind of system using above-mentioned process house refuse and processes life
The method of rubbish alive.According to embodiments of the invention, with reference to Fig. 4, the method includes：
S100：House refuse is supplied and is pre-processed to pretreatment unit
In this step, house refuse is supplied and is pre-processed to pretreatment unit, to obtain inorganic refuse and organic
Rubbish.Thus, be conducive to improving the treatment effeciency of whole house refuse electricity generation system.
According to one embodiment of present invention, preprocessing process can include sorting process, magnetic separation process, pulverization process and
Heap filter is processed.Specifically, first house refuse is carried out sorting process, remove the bulks such as metal in house refuse, glass, fragment of brick
Inorganic matter；Then carry out magnetic separation process, removing the metal impurities in house refuse further, obtaining organic waste, thus increasing
The value of follow-up gained pyrolytic carbon；It is then passed through reducing mechanism, reduce the particle diameter of organic waste, be conducive to accelerating organic rubbish
Rubbish is in the pyrolysis of follow-up revolving bed pyrolysis oven；Finally, organic waste is carried out heap filter process, containing of organic waste can be significantly reduced
Water rate, advantageously reduces the energy consumption of follow-up revolving bed pyrolysis oven, thus reducing the whole process energy consumption processing house refuse system.
According to one embodiment of present invention, the moisture content in gained organic waste can be not higher than 40wt%.Thus, may be used
To significantly improve the pyrolysis efficiency in follow-up revolving bed pyrolysis oven.
S200：Organic waste is supplied feed zone to revolving bed pyrolysis oven so that organic waste sequentially passes through dry section
And pyrolysis zone
In this step, by organic waste supply to revolving bed pyrolysis oven feed zone so that organic waste sequentially pass through dry
Dry area and pyrolysis zone, to obtain high-temperature oil gas and pyrolytic carbon, and pyrolytic carbon is discharged through discharge zone.Thus, it is remarkably improved
The pyrolysis efficiency of revolving bed pyrolysis oven.
According to one embodiment of present invention, the temperature of dry section and the temperature of pyrolysis zone are not particularly restricted, ability
Field technique personnel can be selected according to actual needs, and according to a specific embodiment of the present invention, the temperature of dry section can
Think 300～400 degrees Celsius, the temperature of pyrolysis zone can be 600～900 degrees Celsius.Thus, it is possible to significantly improve organic waste
Pyrolysis efficiency.
S300：High-temperature oil gas are supplied and carries out isolation of purified process to Oil-gas Separation clean unit, and pyrolysis gas will be purified
A part supply to revolving bed pyrolysis oven
In this step, high-temperature oil gas are supplied and carries out isolation of purified process to Oil-gas Separation clean unit, to obtain net
Change pyrolysis gas and pyrolysis oil, and the part purifying pyrolysis gas is supplied to revolving bed pyrolysis oven.Thus, high temperature can be efficiently separated
Pyrolysis oil in oil gas and pyrolysis gas, reduce pyrolysis oil and the temperature of pyrolysis gas, improve the economy processing house refuse system.
According to one embodiment of present invention, with reference to Fig. 5, Oil-gas Separation purified treatment can be carried out according to the following step：
S31：High-temperature oil gas and cooling oil are supplied to Quench spray column, carries out heat exchange process
In this step, the high-temperature oil gas producing and cooling oil in revolving bed pyrolysis oven are supplied and carry out to Quench spray column
Heat exchange is processed, to obtain pyrolysis gas and pyrolysis oil.Thus, pyrolysis oil and the pyrolysis gas in high-temperature oil gas can be efficiently separated, fall
Low pyrolysis oil and the temperature of pyrolysis gas, simultaneously because carrying out Quench spray using cooling oil to high-temperature oil gas, can avoid subsequently carrying out
Water-oil separating is processed, and improves the economy processing house refuse system.Specifically, cooling oil can be the pyrolysis oil of cooling.
S32：Pyrolysis gas are supplied and carries out purified treatment to purifier, and the one of the purification pyrolysis gas obtaining will be separated
Part supplies and uses as fuel to revolving bed pyrolysis oven
In this step, pyrolysis gas are supplied to purifier, carries out purified treatment, to be purified pyrolysis gas, and will
A part for gained purification pyrolysis gas supplies and uses as fuel to revolving bed pyrolysis oven.Thus, significantly reduce this hot pyrolysis oven
The dependence of fuel to external world, and pyrolysis oven fuel cost can be reduced.It should be noted that those skilled in the art can root
Select according to being actually needed the concrete operations mode to purified treatment.
S400：The another part, pyrolytic carbon and the pyrolysis oil that purify pyrolysis gas are supplied and carry out to CFBB
Burning
In this step, the another part, pyrolytic carbon and the pyrolysis oil that purify pyrolysis gas are supplied to CFBB
Burnt, to obtain superheated steam.Thus, by supplying pyrolytic carbon, pyrolysis oil and the remaining pyrolysis gas that purify to circulation
Carry out direct combustion generation superheated steam in fluidized-bed combustion boiler to be used for producing high-grade electricity, on the one hand can fully reclaim in pyrolysis oil
Sensible heat and latent heat, and reluctant waste water in a large number will not be produced, also there is not pyrolysis oil blocking pipeline, on the other hand
Because pyrolytic carbon is loose broken, shattering process can be completed while from revolving bed pyrolysis furnace discharge, therefore enter recycle stream
When in fluidized bed boiler, the particle diameter of pyrolytic carbon is less, can improve the efficiency of combustion in CFBB, and only can produce after burning
Raw a small amount of residue.Thus, pyrolysis oil present in prior art can be solved using the method and pyrolysis gas are difficult by asks
Topic, thus being truly realized the minimizing of rubbish, innoxious and recycling treatment, has good economic benefit.
S500：Superheated steam is supplied and is generated electricity to steam turbine generator group
In this step, superheated steam is supplied and is generated electricity to steam turbine generator group.Thus, it is advantageously implemented life
The recycling of refuse pyrolysis product.Specifically, in CFBB produce superheated steam can directly through stop valve,
Regulating valve enters steam turbine, and partial heat energy is converted to the mechanical energy of turbine rotor rotation, drives synchronous generator rotation to produce
Electric energy.
The method of process house refuse according to embodiments of the present invention is passed through to process house refuse using pretreatment unit, can
To significantly reduce the moisture content in house refuse, such that it is able to significantly improve the pyrolysis efficiency in follow-up pyrolytic process, and lead to
Cross metal and the inorganic matter such as glass, fragment of brick that pretreatment can effectively remove in house refuse, such that it is able to reduce follow-up rotation
The energy consumption of bed pyrolysis oven, improves the value of the pyrolytic carbon of follow-up generation simultaneously, then passes through part through Oil-gas Separation
The purification pyrolysis gas of purifier process gained supply and use as fuel to revolving bed pyrolysis oven, can significantly reduce this heat heat
The dependence of solution stove fuel to external world, and pyrolysis oven fuel cost can be reduced, it is anoxybiotic environment in revolving bed pyrolysis oven simultaneously,
The pollutants such as two English will not be produced therefore in pyrolytic process, therefore without increasing extra treatment facility, thus reducing
The whole processing cost processing house refuse, supplies to following secondly by by pyrolytic carbon, pyrolysis oil and the remaining pyrolysis gas that purify
Carry out direct combustion generation superheated steam in circulation fluidized bed boiler to be used for producing high-grade electricity, on the one hand can fully reclaim in pyrolysis oil
Sensible heat and latent heat, and reluctant waste water in a large number will not be produced, also there is not pyrolysis oil blocking pipeline, the opposing party
Face is loose broken because of pyrolytic carbon, can complete shattering process, therefore entering circulation while from revolving bed pyrolysis furnace discharge
When in fluidized-bed combustion boiler, the particle diameter of pyrolytic carbon is less, can improve the efficiency of combustion in CFBB, and only can after burning
Produce a small amount of residue.Thus, pyrolysis oil present in prior art can be solved using the method and pyrolysis gas are difficult by
Problem, thus being truly realized the minimizing of rubbish, innoxious and recycling treatment, has good economic benefit.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, and limit the present invention never in any form.
Embodiment
It is raw material using certain city's house refuse, house refuse moisture content 55%, become to be grouped into as table 1.
Table 1 house refuse becomes to be grouped into (wt%)
With reference to Fig. 6, house refuse is supplied to pretreatment unit, sequentially passes through sorting, magnetic separation, pulverizing and heap filter and process,
Remove bulk inorganic refuse therein, such as brick, stone, big part glass metal product etc., obtaining moisture content is not higher than
Then gained organic waste is supplied the feed zone to revolving bed pyrolysis oven, and sequentially passes through by the organic waste of 40wt%
Dry section in stove and pyrolysis zone are processed, wherein, 350 degrees Celsius of dry section temperature, Main Function is by organic waste
Moisture dried, 700 degrees Celsius of pyrolysis zone temperature, be rubbish complete be pyrolyzed main reaction region, reaction generate high-temperature oil gas and
Rubbish charcoal, at revolving bed pyrolysis oven top near pyrolysis zone setting high-temperature oil gas outlet, for collecting the high temperature containing water vapour
Oil gas, the hot pyrolytic carbon outlet through discharge zone for the pyrolytic carbon is discharged, and then supplies high-temperature oil gas and cooling oil to Quench spray column
In carry out heat exchange process, obtain pyrolysis gas and pyrolysis oil；Pyrolysis gas are supplied to purifier, carries out purified treatment, obtain net
Change pyrolysis gas, a portion purifies pyrolysis gas and supplies to revolving bed pyrolysis oven, be that the radiant tube of revolving bed pyrolysis oven improves
Then the another part, pyrolytic carbon and the pyrolysis oil that purify pyrolysis gas are supplied and carry out to CFBB fully by fuel
(pyrolytic carbon producing in revolving bed pyrolysis oven using sealing double helix discharging machine discharging and sends into CFBB for burning
Interior, double helix is arranged side by side, and spiral is engaged, because house refuse have passed through pyrolytic reaction, plastics therein, and fabric, wood
The organic matters such as bamboo are all pyrolyzed as carbide, and this carbide is different from crude waste, loose easily broken, through double-helical stirring
And squeezing action, can complete shattering process while discharging, form the raw material meeting needed for CFBB), and follow
The feedwater heat exchange of circulation fluidized bed boiler produces 300-500 degree Celsius of superheated steam, and superheated steam enters vapour through stop valve, regulating valve
Turbine, partial heat energy is converted to the mechanical energy of turbine rotor rotation, drives synchronous generator rotation to produce electric energy, the electricity of generation
Can partly use by oneself outer be connected to the grid, rubbish per ton can generate electricity 238kWh.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.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 in 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
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
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 be interpreted as limitation of the present invention, those 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 (8)
1. a kind of system processing house refuse is it is characterised in that include：
Pretreatment unit, described pretreatment unit has house refuse entrance, inorganic refuse outlet and organic waste outlet；
Revolving bed pyrolysis oven, sequentially forms feed zone, dry section, pyrolysis along furnace bottom rotation direction in described revolving bed pyrolysis oven
Area and discharge zone, described feed zone is provided with organic waste entrance, and described pyrolysis zone is provided with high-temperature oil gas outlet, described discharging
Area is provided with pyrolytic carbon outlet, and described organic waste entrance is connected with the outlet of described organic waste；
Oil-gas Separation clean unit, described Oil-gas Separation clean unit has high-temperature oil gas entrance, purifies pyrolysis gas outlet and heat
Solution oil export, the outlet of described high-temperature oil gas entrance and described high-temperature oil gas is connected, described purification pyrolysis gas outlet and described rotation
Bed pyrolysis oven is connected；
CFBB, described CFBB has pyrolytic carbon entrance, pyrolysis oil-in, purifies pyrolysis gas entrance
With superheated steam outlet, the outlet of described pyrolytic carbon entrance and described pyrolytic carbon is connected, described pyrolysis oil-in and described pyrolysis oil
Outlet is connected, and described purification pyrolysis gas entrance is connected with described purification pyrolysis gas outlet；
Steam turbine generator group, described steam turbine generator group has a superheated steam entrance, described superheated steam entrance with
Described superheated steam outlet is connected.
2. system according to claim 1 is it is characterised in that described pretreatment unit includes the sorting dress being sequentially connected
Put, concentration equipment, reducing mechanism and heap filter device.
3. system according to claim 1 and 2 is it is characterised in that described Oil-gas Separation clean unit includes Quench spray
Device and purifier, described high-temperature oil gas entrance and described pyrolysis oil export are arranged on described chilling spray equipment, described
Chilling spray equipment is additionally provided with cooling oil-in and pyrolysis gas outlet, and described purification pyrolysis gas outlet is arranged on described purification and fills
Put, described purifier is additionally provided with pyrolysis gas entrance, described pyrolysis gas outlet is connected with described pyrolysis gas entrance.
4. the system described in a kind of employing any one of claims 1 to 3 processes the method for house refuse it is characterised in that including：
(1) house refuse is supplied and pre-processed to described pretreatment unit, to obtain inorganic refuse and organic waste；
(2) described organic waste is supplied feed zone to described revolving bed pyrolysis oven so that described organic waste sequentially passes through
Described dry section and described pyrolysis zone, to obtain high-temperature oil gas and pyrolytic carbon, and described pyrolytic carbon is arranged through described discharge zone
Go out；
(3) described high-temperature oil gas are supplied and carry out isolation of purified process to described Oil-gas Separation clean unit, to be purified
Pyrolysis gas and pyrolysis oil, and the described part purifying pyrolysis gas is supplied to described revolving bed pyrolysis oven；
(4) described another part purifying pyrolysis gas, described pyrolytic carbon and described pyrolysis oil are supplied to described recirculating fluidized bed
Burnt in boiler, to obtain superheated steam；
(5) described superheated steam is supplied and generated electricity to described steam turbine generator group.
5. method according to claim 4 is it is characterised in that in step (1), described pretreatment is included at sorting successively
Reason, magnetic separation process, pulverization process and heap filter are processed.
6. the method according to claim 4 or 5 is it is characterised in that step (3) is carried out according to the following step：
(3-1) described high-temperature oil gas and described cooling oil are supplied and carry out heat exchange process to described Quench spray column, so that
To pyrolysis gas and pyrolysis oil；
(3-2) described pyrolysis gas are supplied and carry out purified treatment to described purifier, to be purified pyrolysis gas.
7. the method according to any one of claim 4-6 is it is characterised in that in step (1), the containing of described organic waste
Water rate is not higher than 40wt%.
8. the method according to any one of claim 4-6 is it is characterised in that in step (2), the temperature of described dry section
For 300～400 degrees Celsius, the temperature of described pyrolysis zone is 600～900 degrees Celsius.
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| CN201611090069.3A CN106391673A (en) | 2016-11-30 | 2016-11-30 | System and method for treating household garbage |
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