CN106118698A - The steam utilizing refuse pyrolysis to produce removes rubbish the system and method for middle air - Google Patents
The steam utilizing refuse pyrolysis to produce removes rubbish the system and method for middle air Download PDFInfo
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- CN106118698A CN106118698A CN201610700779.7A CN201610700779A CN106118698A CN 106118698 A CN106118698 A CN 106118698A CN 201610700779 A CN201610700779 A CN 201610700779A CN 106118698 A CN106118698 A CN 106118698A
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- steam
- dry section
- rubbish
- rotary hearth
- gas outlet
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/18—Modifying the properties of the distillation gases in the oven
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to the use of the steam that refuse pyrolysis produces to remove rubbish the system and method for middle air.System in the present invention includes feed arrangement, rotary hearth furnace, blower fan, blow device, rotary hearth furnace has rotating ring-shaped furnace bottom, for placing rubbish, upper furnace is provided with radial canal, rotary hearth furnace has successively between feed zone, dry section, pyrolysis zone, discharge zone, and dry section and feed zone, pyrolysis zone and is equipped with baffle plate；The garbage outlet of feed arrangement is connected with the garbage inlet of feed zone, and the gas outlet of dry section is connected with fan air inlet, and blower fan gas outlet is connected with the air inlet of blow device, and the steam outlet of blow device is connected with the steam entry of feed arrangement.The present invention can effectively utilize the steam that refuse pyrolysis process produces in rotary hearth furnace to purge the rubbish of required process, the air in removing rubbish, it is ensured that the anoxybiotic atmosphere of rotary hearth furnace, it is to avoid the generation of two English in garbage processing procedure.
Description
Technical field
The present invention relates to solid waste resource recovery process field, particularly relate to a kind of water utilizing refuse pyrolysis to produce and steam
Gas removes rubbish the system and method for middle air.
Background technology
Along with China's rapid development of economy, urbanization process speed is constantly accelerated, and living standards of the people improve constantly, Gu
The yield of body garbage, particularly domestic waste is also being continuously increased, and environment causes serious pollution.Sustainable
Under the influence of idea of development, solid waste is innoxious, minimizing and the exploitation application of resource treatment technique and industrialization, will
A wide prospect can be faced.Therefore, solid waste treating technology research has become after waste water, exhaust-gas treatment research
Another study hotspot.Wherein, solid waste resource recovery processes and refers to use management and technological measure from solid waste
Reclaim material and the energy, the circulation of matter and energy can be accelerated, create certain economic worth.
Refuse pyrolysis method refers to, under conditions of anaerobic or anoxia, utilize the thermal instability of organic matter in garbage, to it
Carry out adding thermal distillation, make Organic substance crack, the various new gases of condensed rear formation, liquid and solid, more therefrom extract
Fuel oil, combustible gas etc..
Relating to the rotary hearth furnace of a kind of radiant tube isolated smoke gas heating in prior art, rotary hearth furnace is loop configuration, body of heater
Being formed with fixing furnace wall, furnace roof by the bottom of rotary furnace, furnace bottom is rotated by furnace bottom machine, and heated bulk material is laid in stove
, material rotates with furnace bottom, and remains static relative to furnace bottom, and the process forwarding discharging opening from charging door to completes to add at the end
Thermally and chemically react.It is provided with some radiation tube heaters in burner hearth, with radiation mode, the material in stove is heated.
When using above-mentioned rotary hearth furnace that rubbish is carried out pyrolysis processing, rubbish rotates with furnace bottom in stove, is gradually heated up heating up
Complete to be dried, pyrolytic process.Accordingly, rotary hearth furnace can be divided into feed zone, dry section, pyrolysis zone, discharge zone.In dry section,
In rubbish, moisture is evaporated, and forms steam, simultaneously because radial canal temperature is higher, has a small amount of rubbish and be pyrolyzed, and is formed
Combustible pyrolysis's gas.Generally, the pyrolysis gas being dried the steam formed and refuse pyrolysis formation can be sent to gas-liquid together
Piece-rate system carries out gas-liquid separation, and steam is condensed into aqueous water.In the process, dry section generate steam not by
Effectively utilize, and this steam vapour amount is big, about the 30%～50% of rubbish quality, causes waste greatly.Further, rubbish enters stove
There is a small amount of air between its gap front, such as directly pyrolysis, cause the environment of aerobic, cause the generation of two English.
Summary of the invention
It is contemplated that rubbish is carried out pyrolysis processing, and thermal decomposition product is effectively recycled, it is achieved solid
Changing rejected material to useful resource processes.The steam utilizing refuse pyrolysis to produce remove rubbish between gap exist air, it is ensured that rotary hearth furnace
Interior anoxybiotic atmosphere.
The invention discloses a kind of steam utilizing refuse pyrolysis to produce to remove rubbish the system of middle air, described system
Including feed arrangement, rotary hearth furnace, blower fan, blow device；
Described rotary hearth furnace has rotating ring-shaped furnace bottom, is used for placing described rubbish；Described rotary hearth furnace upper furnace sets
It is equipped with radial canal；
Described rotary hearth furnace has feed zone, dry section, pyrolysis zone, discharge zone successively；Described feed zone and described dry section
Between be provided with baffle plate；It is provided with baffle plate between described dry section and described pyrolysis zone；
Described feed arrangement has garbage outlet and steam entry；
Described feed zone has garbage inlet, and this garbage inlet connects described garbage outlet；
Described dry section has gas outlet；
Described blower fan has fan air inlet and blower fan gas outlet, and this fan air inlet connects giving vent to anger of described dry section
Mouthful；
Described blow device has air inlet, and this air inlet connects described blower fan gas outlet；
Described blow device has steam outlet, and this steam outlet connects the steam entry of described feed arrangement.
In above-mentioned system, farther including purifier, described purifier has air inlet, and this air inlet connects institute
State the gas outlet of feed arrangement.
Further, described radial canal is indirect heating radiation pipe.
Further, described rotary hearth furnace, blow device, the regional of blower fan are provided with multiple air inlet or gas outlet；
Described blower fan is two or more.
Further, described dry section is provided with rubbish turning device and multiple stage pressure instrumentation.
Further, temperature instrument and combustible gas composition detection instrument it are provided with at the gas outlet of described dry section.
The invention also discloses and a kind of utilize said system to remove rubbish the method for middle air, comprise the following steps:
A, described rubbish is transported in described feed arrangement, is transported to entering of described rotary hearth furnace via described garbage outlet
Material district, is then transported to described dry section, produces steam；
B, described steam is drawn to described blow device by described blower fan via the gas outlet of described dry section；
C, described steam enter described feed arrangement, purging by described steam outlet via described steam entry
Remove the air in described rubbish, obtain mixed gas.
In the method for the above-mentioned middle air that removes rubbish, further comprise the steps of: described mixed gas after step c by described
The gas outlet of feed arrangement enters described purifier.
In the method for the above-mentioned middle air that removes rubbish, the pressure of described dry section is set as the pressure than described feed zone
High 5～10Pa；
The pressure of described dry section is set as higher than the pressure of described pyrolysis zone 5～10Pa.
In the method for the above-mentioned middle air that removes rubbish, the temperature of steam described at the gas outlet of described dry section is controlled
Be 120～400 DEG C, and the content of wherein combustible gas is controlled for account for total steam≤1wt%.
Rotary hearth furnace in the present invention uses indirect heating radiation pipe that rubbish is carried out pyrolysis processing.Pyrolytic process controls
The temperature of radial canal and the pressure in each region of rotary hearth furnace, and rubbish is overturn, rubbish in dry section can be prevented effectively from
Pyrolysis generates combustible gas, thus ensures to produce highly purified steam.
The present invention also utilizes steam that the air between rubbish gap carries out purging and removes, it is ensured that the anoxybiotic gas in rotary hearth furnace
Atmosphere, it is to avoid the generation of two English.
Accompanying drawing explanation
Fig. 1 is that the remove rubbish system structure of middle air of the steam utilizing refuse pyrolysis to produce in the embodiment of the present invention is shown
It is intended to.
Fig. 2 is the structural representation of rotary hearth furnace in the embodiment of the present invention.
Fig. 3 is that the remove rubbish method flow of middle air of the steam utilizing refuse pyrolysis to produce in the embodiment of the present invention shows
It is intended to.
Reference in accompanying drawing is as follows:
I, feed arrangement；II, rotary hearth furnace；III, blower fan；IV blow device；V purifier；
1, feed zone；2, dry section；3, pyrolysis zone；4, discharge zone；
5, gas outlet；6, gas outlet；7, gas outlet.
Detailed description of the invention
Below in conjunction with drawings and Examples, the detailed description of the invention of the present invention is described in more details, in order to energy
The advantage being enough more fully understood that the solution of the present invention and its various aspects.But, specific embodiments described below and reality
Executing example is only descriptive purpose rather than limitation of the present invention.
The system of middle air as it is shown in figure 1, the steam utilizing refuse pyrolysis to produce in the embodiment of the present invention removes rubbish
Structure includes five parts, respectively feed arrangement I, rotary hearth furnace II, blower fan III, blow device IV, purifier V.
As in figure 2 it is shown, be the structural representation of above-mentioned rotary hearth furnace II, this rotary hearth furnace have successively feed zone 1, dry section 2,
Pyrolysis zone 3, discharge zone 4.Dry section 2 has gas outlet 5, and pyrolysis zone 3 has gas outlet 6 and gas outlet 7.
1., the body of heater of rotary hearth furnace II include annular furnace wall, annular furnace roof, rotating ring-shaped furnace bottom, the most rotating
Ring-shaped furnace bottom is used for placing rubbish and processes.Further, the upper space of the burner hearth of rotary hearth furnace II is provided with indirect heating radiation
Pipe.
Dry section 2 is provided with rubbish turning device, at gas outlet 5, is provided with temperature instrument and combustible gas composition
Instrumentation.
Feed zone 1 and the boundary a of dry section 2, the boundary b of dry section 2 and pyrolysis zone 3 be respectively arranged with baffle plate a and
Distance ＜ 100 between rubbish on baffle plate b, baffle plate a and the bottom of baffle plate b and ring-shaped furnace bottom.Further, boundary a and point
At boundary, b is both provided with multiple stage pressure instrumentation.
2., feed arrangement I garbage raw material after air is removed in conveying in rotary hearth furnace II, there is garbage inlet, rubbish
Rubbish outlet, steam entry, gas outlet.
Wherein, garbage outlet is connected with the garbage inlet of feed zone 1 in rotary hearth furnace II, steam entry and blow device IV
Steam outlet connect, gas outlet is connected with the air inlet of purifier V.
3., blower fan III include blower fan 1 and blower fan 2, and blower fan 1 and blower fan 2 all have air inlet and gas outlet.
Wherein the air inlet of blower fan 1 is connected with the gas outlet 5 of dry section 2.The air inlet of blower fan 2 and feed zone 1, pyrolysis zone
3, the one or more gas outlets in discharge zone 4 connect.
4., blow device IV there is air inlet, this air inlet is connected with the gas outlet of blower fan 1.
As described in 2., blow device IV also has steam outlet, this steam outlet and the steam of feed arrangement I
Entrance connects.In entrance feed arrangement I of being jetted by blow device IV by steam, utilize steam in feed arrangement I
Rubbish purge, remove rubbish between gap exist air.
The method of middle air as it is shown on figure 3, the steam utilizing refuse pyrolysis to produce in the embodiment of the present invention removes rubbish
Schematic flow sheet, including following four steps:
A, refuse pyrolysis produce steam: be transported in feed arrangement I by the garbage inlet of feed arrangement I by rubbish,
And be transported in the feed zone 1 of rotary hearth furnace II via garbage outlet, it is placed on rotating ring-shaped furnace bottom, is then transported
To dry section 2.Under the effect of indirect heating radiation pipe, garbage raw material is dried generation steam.
Wherein, refuse pyrolysis includes two processes: dry run and pyrolytic process.It is dried process in dry section 2
Produce steam, pyrolysis zone 3 carries out pyrolytic process, produce pyrolytic carbon.Wherein, during pyrolytic carbon is transported to drawing mechanism.
, in dry section 2, the rubbish being placed on ring-shaped furnace bottom can be overturn by rubbish turning device, it is ensured that rubbish
Thermally equivalent.This rubbish turning device can avoid rubbish hot-spot to generate a large amount of combustible gas, thus effectively controls steam
The content of middle combustible gas composition.
The dry run of rubbish is provided heat by radial canal, owing to radial canal uses the mode of indirec radiation heating,
Refuse pyrolysis atmosphere in rotary hearth furnace II is completely cut off with combustion heat supplying atmosphere, thus ensures to produce the high-purity of steam.
Baffle plate a can be used for preventing the gas of feed zone 1 from flowing into dry section 2, and it is flammable that baffle plate b can prevent that pyrolysis zone 3 from producing
Gas flows into dry section 2, it is ensured that the high-purity of the steam produced in dry section 2.
Combustible gas composition detection instrument at gas outlet 5 is for detecting the mass content of combustible gas in steam.When it contains
During amount ＞ 1wt% (wt% refers to mass content), blower fan 1 quits work, and utilizes blower fan 2 via its beyond gas outlet 5
Out rotary hearth furnace II is extracted gas in dry section 2 in its gas outlet, thus ensures the high-purity of steam.
, the multiple stage pressure instrumentation that arranges of the boundary a of dry section 2 is for monitoring feed zone 1 and the pressure of dry section 2
Power difference P1.As P1 ＜ 5Pa, regulate blower fan 1, maintain the pressure high 5～10Pa of the pressure ratio feed zone 1 of dry section 2.
The multiple stage pressure instrumentation that the boundary b of dry section 2 is arranged is for monitoring dry section 2 and the pressure of pyrolysis zone 3
Difference P2.As P2 ＜ 5Pa, regulation blower fan 1 and blower fan 2, reduce the pressure of pyrolysis zone 3, maintain the pressure ratio pyrolysis zone of dry section 2
The pressure high 5～10Pa of 3.
, temperature instrument at gas outlet 5 is for detecting the temperature producing steam in dry section 2, and then control
The heating efficiency of radial canal, it is ensured that the temperature of steam maintains 120～400 DEG C.
B, steam are drawn to blow device: the steam that step A produces is entered by the air inlet of blower fan 1 by gas outlet 5
Enter in blower fan 1, be then transported in blow device IV via the gas outlet of blower fan 1.
C, remove rubbish middle air: the steam steam outlet by blow device IV, and via the water of feed arrangement I
Vapour inlet winding-up enters in feed arrangement I, purges rubbish therein, such that it is able to deposit between fully erased rubbish gap
Air, and obtain mixed gas.
This step can ensure that entering the rubbish in rotary hearth furnace II via feed arrangement I will not carry air, thus ensures
The anoxybiotic atmosphere of rotary hearth furnace II.Avoid in refuse pyrolysis processing procedure, cause due to the existence of oxygen generating noxious substance
Two English.
The mixed gas obtained in D, the step C gas outlet by feed arrangement I, and via the air inlet of purifier V
It is transported in purifier V.Gaseous mixture carries out purified treatment in purifier V, purifies outer row up to standard.
In the embodiment of the present invention, mixed gas is to include the waste gas of steam and air.
Embodiment 1
Garbage raw material is transported in dry section via the feed zone of rotary hearth furnace by feed arrangement, is produced by dry run
Unboiled water steam.This process maintains the pressure ratio feed zone of dry section, pyrolysis zone pressure high 5Pa, water at dry section gas outlet respectively
Steam temperature is 120～180 DEG C.
Then, steam is transported to blow device by blower fan, then by blow device, steam winding-up is entered charging
In device, the air between wherein rubbish gap is purged.
Embodiment 2
Step in the present embodiment, with embodiment 1, maintains the pressure ratio feed zone of dry section, pyrolysis zone pressure height respectively
8Pa, at dry section gas outlet, steam temperature is 180～230 DEG C, and other each conditions are with embodiment 1.
Embodiment 3
Step in the present embodiment, with embodiment 1, maintains the pressure ratio feed zone of dry section, pyrolysis zone pressure height respectively
10Pa, at dry section gas outlet, steam temperature is 230～400 DEG C, and other each conditions are with embodiment 1.
Variation
Detailed description of the invention based on the present invention and embodiment also can expand out many variation, such as:
The body of heater of rotary hearth furnace can be other outside division ring shape may make up rotary hearth furnace at the bottom of furnace wall, furnace roof, rotatable stove
Shape, furnace bottom can use arbitrary rotating manner.
Radial canal may be provided on other position of rotary hearth furnace, but can use in not affecting its heating function, or rotary hearth furnace
Other type of mode of heating.
In rotary hearth furnace, the order of connection of each subregion can be that other do not affect the order that rotary hearth furnace works, or the quantity of subregion can
It is decreased or increased, each region can arrange any number of air inlet or gas outlet.
Temperature instrument, combustible gas composition detection instrument, baffle plate, pressure instrumentation, the quantity of blower fan are not limited
System.
The structure of feed arrangement and purifier is not any limitation as.
System of the present invention is not limited to recycling treatment rubbish.
It is last that it is noted that obviously above-described embodiment is only for clearly demonstrating example of the present invention, and also
The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out change or the variation of other multi-form.Here without also cannot all of embodiment be given exhaustive.And thus drawn
What Shen went out obviously changes or changes among still in protection scope of the present invention.
Claims (10)
1. the steam utilizing refuse pyrolysis to produce removes rubbish the system of middle air, it is characterised in that described system bag
Include feed arrangement, rotary hearth furnace, blower fan, blow device；
Described rotary hearth furnace has rotating ring-shaped furnace bottom, is used for placing described rubbish；Described rotary hearth furnace upper furnace is provided with
Radial canal；
Described rotary hearth furnace has feed zone, dry section, pyrolysis zone, discharge zone successively；Between described feed zone and described dry section
It is provided with baffle plate；It is provided with baffle plate between described dry section and described pyrolysis zone；
Described feed arrangement has garbage outlet and steam entry；
Described feed zone has garbage inlet, and this garbage inlet connects described garbage outlet；
Described dry section has gas outlet；
Described blower fan has fan air inlet and blower fan gas outlet, and this fan air inlet connects the gas outlet of described dry section；
Described blow device has air inlet, and this air inlet connects described blower fan gas outlet；
Described blow device has steam outlet, and this steam outlet connects the steam entry of described feed arrangement.
System the most according to claim 1, it is characterised in that also include that purifier, described purifier have air inlet
Mouthful, this air inlet connects the gas outlet of described feed arrangement.
System the most according to claim 1 and 2, it is characterised in that described radial canal is indirect heating radiation pipe.
System the most according to claim 1 and 2, it is characterised in that described rotary hearth furnace, blow device, each district of blower fan
Territory is provided with multiple air inlet or gas outlet；Described blower fan is two or more.
System the most according to claim 1 and 2, it is characterised in that be provided with rubbish turning device in described dry section with many
Platform pressure instrumentation.
System the most according to claim 1 and 2, it is characterised in that be provided with temperature detection at the gas outlet of described dry section
Instrument and combustible gas composition detection instrument.
7. the system utilizing one of claim 1 to 6 described removes rubbish the method for middle air, comprises the following steps:
A, described rubbish is transported in described feed arrangement, is transported to the charging of described rotary hearth furnace via described garbage outlet
District, is then transported to described dry section, produces steam；
B, described steam is drawn to described blow device by described blower fan via the gas outlet of described dry section；
C, described steam enter described feed arrangement by described steam outlet via described steam entry, and purging is removed
Air in described rubbish, obtains mixed gas.
Method the most according to claim 7, it is characterised in that further comprise the steps of: described mixed gas after step c and lead to
The gas outlet crossing described feed arrangement enters described purifier.
Method the most according to claim 7, it is characterised in that
The pressure of described dry section is set as higher than the pressure of described feed zone 5～10Pa；
The pressure of described dry section is set as higher than the pressure of described pyrolysis zone 5～10Pa.
Method the most according to claim 5, it is characterised in that by steam described at the gas outlet of described dry section
It is 120～400 DEG C that temperature controls, and the content of wherein combustible gas is controlled for account for total steam≤1wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700779.7A CN106118698A (en) | 2016-08-22 | 2016-08-22 | The steam utilizing refuse pyrolysis to produce removes rubbish the system and method for middle air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610700779.7A CN106118698A (en) | 2016-08-22 | 2016-08-22 | The steam utilizing refuse pyrolysis to produce removes rubbish the system and method for middle air |
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| CN106118698A true CN106118698A (en) | 2016-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876172A (en) * | 2020-07-13 | 2020-11-03 | 万双蝶 | Livestock excrement carbonization equipment |
-
2016
- 2016-08-22 CN CN201610700779.7A patent/CN106118698A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876172A (en) * | 2020-07-13 | 2020-11-03 | 万双蝶 | Livestock excrement carbonization equipment |
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