CN207815347U - A kind of waste heat boiler is used for the air-cooled reclamation set of screw conveyor of ashes collection - Google Patents
A kind of waste heat boiler is used for the air-cooled reclamation set of screw conveyor of ashes collection Download PDFInfo
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- CN207815347U CN207815347U CN201820023780.5U CN201820023780U CN207815347U CN 207815347 U CN207815347 U CN 207815347U CN 201820023780 U CN201820023780 U CN 201820023780U CN 207815347 U CN207815347 U CN 207815347U
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- screw conveyor
- seal bootr
- cooled
- pipeline
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses a kind of waste heat boilers to be used for the air-cooled reclamation set of screw conveyor that ashes are collected, it is included in the screw conveyor being connect with flue ash hole below waste heat boiler flue, wherein, screw conveyor housing is provided with seal bootr along screw conveyor axial rings, there are air ducts between seal bootr and screw conveyor housing, it is equipped with air inlet in seal bootr axial direction one end, the seal bootr axial direction other end is provided with air outlet, seal bootr air inlet connects the air outlet of a cooling wind pressure fan, the seal bootr air outlet is connected to a pipeline through discharge pipe, the pipeline is the air inlet pipeline of garbage burning boiler primary air fan.The utility model leads to First air by the cooling of screw conveyor is air-cooled by pipeline, the heat that cooling wind carries is injected into primary air system together, improve the temperature of First air, steam type airheater design capacity can accordingly be reduced, the energy is saved, the directly outer not environmentally phenomenon arranged of hot wind is avoided again, is saved and is once invested, reduces operating cost.
Description
Technical field
The utility model is related to a kind of waste heat boilers to be used for the air-cooled reclamation set of screw conveyor that ashes are collected.
Background technology
With Chinese national economy stable and rapid development, the quantity of refuse that city generates per capita steps up, while with city
The gradually expansion of area's area, urban population constantly increase, and China various regions generation rises year by year.To prevent garbage disposal
Generate secondary pollution in the process, at the same in current construction resource-efficient and environment friendly society, implement energy-saving and emission-reduction comprehensively
Under measure, an urgent demand for the needs for promoting and developing a circular economy, the circular economy processing of domestic waste is imperative,
And multiple advantages such as the innoxious of domestic garbage burning electricity generation industry, recycling, minimizing make it in numerous garbage disposals
Show one's talent in mode.
Most important equipment is exactly incinerator, waste heat boiler and Turbo-generator Set in waste incineration and generating electricity technology.Waste heat
Boiler is exchanged heat by heating surface and high-temperature flue gas is heated to be steam by water, to ensure that flue gas and heating surface come into full contact with heat exchange
And the requirements such as boiler structure intensity, carbonated drink characteristic are maintained, the flue gas flow channel of country's mainstream waste-heat oven is both designed as first at present
Channel, second channel, third channel and fourth lane, and it is necessary attached to be provided with burning wind system and screw conveyor etc.
Facility.And screw conveyor is provided with immediately below waste heat boiler two, three exhaust gases passes, for collecting two, three exhaust gases passes
The Boiler Ash of interior sedimentation, and be delivered to appointed part and handled, the flue-gas temperatures of two or three flues is at 700 DEG C or so, screw machine
It needs to carry out pressure cooling, it otherwise greatly due to the temperature change of the flue gas when boiler startup, stopping or operating condition change, will
Cause spiral axis or shell with high temperature expansion or shrinkage, cause spiral casey even part cracked so that damage.
Invention content
The purpose of this utility model is to propose a kind of air-cooled reuse dress of screw conveyor that waste heat boiler is collected for ashes
It sets, by the way that there are one interlayers in the setting of the outer surface of screw conveyor, is passed through screw conveyor of the cooling wind by high temperature of interlayer
Heat bring out after the wind that comes into primary air fan entrance and trash repository mix, into steam-after primary air fan pressurizes
Air preheater heats, and enters back into incinerator and is reacted with incineration firing.
To achieve the goals above, the technical solution of the utility model is：
A kind of waste heat boiler is used for the air-cooled reclamation set of screw conveyor of ashes collection, is included under waste heat boiler flue
The screw conveyor that side is connect with flue ash hole, wherein be provided with around screw conveyor housing along screw conveyor axial rings
Seal bootr, there are air ducts between seal bootr and screw conveyor housing, air inlet are equipped in seal bootr axial direction one end, in seal bootr
The axial other end is provided with air outlet, and seal bootr air inlet connects the air outlet of a cooling wind pressure fan, and the seal bootr goes out
Air port is connected to a pipeline through discharge pipe, and the pipeline is the air inlet pipeline of garbage burning boiler primary air fan.
Scheme is further：The rotation helical axis of the screw conveyor is the hollow shaft that axis center is cavity ventilation road,
The air outlet of the cooling wind pressure fan also connects hollow shaft simultaneously while connecting seal bootr air inlet by rotary joint
One end cavity ventilation road air inlet, the discharge pipe that the seal bootr air outlet is passed through is by rotary joint while connecting hollow
The other end cavity ventilation road air outlet of axis.
Scheme is further：The hollow shaft is divided into four ventilations along the axial partition board intersected with " cross " in cavity ventilation road
Road.
Scheme is further：It is axial on the inside of the seal bootr to be provided with separator strip.
Scheme is further：The separator strip is multiple, and multiple separator strips are arranged along seal bootr axially spaced-apart spiral, are used for
Heat transfer efficiency is improved in turn to the disturbance of air duct apoplexy.
The utility model has the beneficial effects that：
By screw conveyor cool down it is air-cooled First air is led to by pipeline, the heat that spiral cooling wind carries is injected together
Primary air system improves the temperature of First air, can accordingly reduce steam air heater design capacity, that is, save the energy,
The directly outer not environmentally phenomenon arranged of hot wind is avoided again, is saved and is once invested, reduces operating cost.
The shell chuck of screw conveyor and the center of axis are baffle design, increase heat exchange area first, while cold
But wind is disturbed in screw conveyor by partition board, is conducive to the propagation of cooling wind internal heat, the cooling of more current normal spiral
Chuck greatly improves heat exchange efficiency；Secondly the reinforcing rib that partition board also serves as increases the intensity of casing and axis, improves fortune
The row service life.
When spiral cooling blower overhauls, detaching fan and air inlet are disengaged, since cooling wind air outlet is connected to one
The entrance of secondary wind turbine, primary air fan entrance negative pressure can continue to that the air inlet disengaged is driven to continue air draught, and add helical feed
The screw thread vortex iris type chuck windage of machine is smaller, cooling spiral is can continue in 2-4 hours to ensure its normal work,
Enough maintenance or replacing construction are provided to spiral cooling blower, ensures that boiler is continuously run.
The utility model is described in detail with reference to the accompanying drawings and examples.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model screw conveyor cross section structure schematic diagram.
Specific implementation mode
A kind of waste heat boiler is used for the air-cooled reclamation set of screw conveyor of ashes collection, as shown in Figure 1, described device packet
The screw conveyor 2 being connect with flue ash hole 1 below waste heat boiler flue is included, since the flue-gas temperature of flue is at 700 DEG C
Left and right, the temperature of cigarette ash is quite high, and screw machine cools down, for this purpose, along screw conveyor axial rings around screw conveyor
Shell is provided with seal bootr 3, and there are air ducts 4 between seal bootr and screw conveyor housing, in seal bootr axial direction one end, such as Fig. 1
The starting end side of middle screw conveyor is equipped with air inlet 301, in the seal bootr axial direction other end, such as the end of screw conveyor in Fig. 1
End side is provided with air outlet 302, and seal bootr air inlet connects the air outlet of a cooling wind pressure fan 5, the seal bootr outlet air
Mouth is connected to a pipeline 7 through discharge pipe 6, and the pipeline is the air inlet pipeline of garbage burning boiler primary air fan 8.
It is further in embodiment：The rotation helical axis of the screw conveyor is that axis center is cavity ventilation road 201
The air outlet of hollow shaft, the cooling wind pressure fan is also connected by rotary joint 9 simultaneously while connecting seal bootr air inlet
One end cavity ventilation road air inlet of hollow shaft is connect, the discharge pipe that the seal bootr air outlet is passed through is same by rotary joint 10
When connect hollow shaft other end cavity ventilation road air outlet.
As shown in Figure 1, cold wind convey into the casing of screw conveyor chuck and axis it is hollow in, with the casing of high temperature and
Axis exchanges heat, the cooling wind after heating by wind pipeline enter primary air fan entrance and trash repository come wind mix, pass through
Enter the heating of steam air heater 11 after crossing primary air fan pressurization, enters back into incinerator and reacted with incineration firing.In discharge pipe
It is provided with the first valve 12 on 6, outlet air shunt valve 13 has been picked out before the first valve, second is provided on outlet air shunt valve 13
Valve 14.
In embodiment：As shown in Fig. 2, the partition board 15 that the hollow shaft is axially intersected with " cross " along cavity ventilation road divides and is
Four ventilating ducts, to increase the disturbance of wind.Equally：It is axial on the inside of the seal bootr to be provided with separator strip 16.And：It is described every
Lath is multiple, and multiple separator strips are arranged along seal bootr axially spaced-apart spiral, for the disturbance to air duct apoplexy, i.e., is disturbed in air duct
The flowing of dynamic wind improves heat transfer efficiency in turn.
This example screw conveyor conveys high-temperature material, reaches as high as 700 DEG C, conveying capacity 1.2t/h, power of motor
7.5KW, revolution speed of screw 34r/min, fed distance 5600mm.Housing design be three pieces of separator strips 16 of band divide be four rooms chuck
Structure, cooling wind enter chuck import by housing entry blast pipe and summarize air compartment, and four are being respectively enterd after entrance air compartment
A air compartment, in outlet, four air compartments are aggregated into total air compartment again, and screw conveyor, casing and partition board material selection are left through air outlet
16Mn, casing wall thickness 6mm, partition board thickness 6mm；Axis is designed as hollow structure, and is divided into four by the partition board that two " cross " intersects
Compartment, cooling wind are entered by rotary joint in compartment, then from outlet rotary joint to air outlet, and axis and partition board use 310S materials
Matter, axial wall thickness 8mm, partition board thickness 6mm.
Spiral cooling blower 5 is centrifugal blower, enclosure material Q235B, blade material 16Mn, main shaft 45#, power of motor
5.5KW, air quantity 1616m3/ h, wind pressure 4672Pa, rotating speed 2900r/min.20 DEG C of inlet air temperature, 55 DEG C of leaving air temp.
8 blade of primary air fan be centrifugal blower, shell Q235B, blade material 16Mn, main shaft 45#, power of motor 185KW,
Air quantity 80000Nm3/ h, wind pressure 5080Pa, rotating speed 1450r/min.
Air preheater 11 material Q235B, flow 80000Nm3/h.Spiral cooling wind pipe material Q235B, wall thickness 5mm,
Diameter 200mm.A wind pipe material Q235B, wall thickness 5mm, diameter 1620mm.
First air and spiral cooling wind in embodiment are continuous services；When primary air fan overhaul, boiler can only blowing out or
Banking fire, spiral cooling blower outlet air is emergent to be switched to 13 row's air of outlet air shunt valve；When the maintenance of spiral cooling blower, but once
When fan operation, the present embodiment Spiral fan uses flanged joint with wind pipeline, can be quickly by spiral cooling blower and air hose
Road disengages, and by the negative pressure of primary air fan entrance in 2-4 hours, can suck a certain amount of air and continue cooling spiral conveying
Machine maintains operation.
Whole set process system matches electric control respectively, i.e. screw conveyor, spiral cooling blower and primary air fan is powered respectively,
In DCS centralized controls and monitoring, the operating status of motor, fault alarm are shown in DCS system on the spot.
Claims (5)
1. a kind of waste heat boiler is used for the air-cooled reclamation set of screw conveyor that ashes are collected, it is included in below waste heat boiler flue
The screw conveyor being connect with flue ash hole, which is characterized in that set around screw conveyor housing along screw conveyor axial rings
It is equipped with seal bootr, there are air ducts between seal bootr and screw conveyor housing, are equipped with air inlet in seal bootr axial direction one end, are sealing
It closes the cover axial direction other end and is provided with air outlet, seal bootr air inlet connects the air outlet of a cooling wind pressure fan, the closing
Cover air outlet is connected to a pipeline through discharge pipe, and the pipeline is the air inlet pipeline of garbage burning boiler primary air fan.
2. air-cooled reclamation set according to claim 1, which is characterized in that the rotation helical axis of the screw conveyor is
Axis center is the hollow shaft in cavity ventilation road, and the air outlet of the cooling wind pressure fan is gone back while connecting seal bootr air inlet
Connect one end cavity ventilation road air inlet of hollow shaft, the outlet air that the seal bootr air outlet is passed through simultaneously by rotary joint
Pipe connects the other end cavity ventilation road air outlet of hollow shaft by rotary joint simultaneously.
3. air-cooled reclamation set according to claim 2, which is characterized in that the hollow shaft is axially used along cavity ventilation road
The partition board that " cross " intersects is divided into four ventilating ducts.
4. air-cooled reclamation set according to claim 1, which is characterized in that axial on the inside of the seal bootr to be provided with partition board
Item.
5. air-cooled reclamation set according to claim 4, which is characterized in that the separator strip is multiple, multiple separator strips
It is arranged along seal bootr axially spaced-apart spiral, for the disturbance to air duct apoplexy and then improves heat transfer efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820023780.5U CN207815347U (en) | 2018-01-08 | 2018-01-08 | A kind of waste heat boiler is used for the air-cooled reclamation set of screw conveyor of ashes collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820023780.5U CN207815347U (en) | 2018-01-08 | 2018-01-08 | A kind of waste heat boiler is used for the air-cooled reclamation set of screw conveyor of ashes collection |
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| Publication Number | Publication Date |
|---|---|
| CN207815347U true CN207815347U (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820023780.5U Active CN207815347U (en) | 2018-01-08 | 2018-01-08 | A kind of waste heat boiler is used for the air-cooled reclamation set of screw conveyor of ashes collection |
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| CN (1) | CN207815347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158200A (en) * | 2018-10-31 | 2019-01-08 | 上海成界制药设备有限公司 | A kind of modified form discharging device |
-
2018
- 2018-01-08 CN CN201820023780.5U patent/CN207815347U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158200A (en) * | 2018-10-31 | 2019-01-08 | 上海成界制药设备有限公司 | A kind of modified form discharging device |
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