CN207112849U - Smoke-heating device - Google Patents
Smoke-heating device Download PDFInfo
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- CN207112849U CN207112849U CN201720998780.2U CN201720998780U CN207112849U CN 207112849 U CN207112849 U CN 207112849U CN 201720998780 U CN201720998780 U CN 201720998780U CN 207112849 U CN207112849 U CN 207112849U
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Abstract
The utility model discloses a kind of Smoke-heating device, including housing, sealing air pipe, supercharging device, seal box and heat-exchanger rig for flue gas in heated shell, seal box is sealedly connected on hull outside, supercharging device is used to convey gas into seal box, supercharging device is arranged on sealing air pipe, the import of sealing air pipe is located at the port of export of housing cavity, and the outlet of sealing air pipe is located in seal box.By being passed through the high temperature after Smoke-heating device heats in seal box, malleation flue gas is used as sealing air, the highly corrosive in housing, low temperature wet flue gas is prevented to escape into seal box by the active connection place of heat-exchanger rig, highly corrosive low temperature wet flue gas is avoided to be condensed in seal box, the weld and seal box for exchanging thermal cause to corrode, therefore, the service life of Smoke-heating device extends.
Description
Technical field
Fume treatment technical field is the utility model is related to, more particularly to a kind of Smoke-heating device.
Background technology
The wet desulphurization of limestone/gypsum method is extensive because of the advantages that desulphurization reaction is fast, efficiency high, and sulfur-removing additives utilization rate is high
Applied in fossil-fired unit, because the flue gas after wet desulphurization has, water content is high, temperature is low, the features such as easily condensation, cigarette
Also containing the strong corruption material such as fluoride, chloride in gas, easily form that corrosion strength is high, permeability is relatively strong and more difficult strick precaution
Low temperature and high relative humidity diluted acid type corrodes, and upstream device will be caused compared with deep-etching., can also band if directly discharging the flue gas of wet desulphurization
The problems such as coming gypsum rain, chimney water smoke long queue visual pollution.Therefore it is traditional as arranging flue gas on the flue exported in desulfurization
Heater realizes dry smoke stack emission.
Traditional Smoke-heating device includes housing and the heat-exchanger rig for flue gas in heated shell.Housing is arranged on de-
On the flue of sulphur outlet, enclosure interior is connected with highly corrosive wet flue gas, and Smoke-heating device is in operation under positive pressure state.To reduce
The heat exchanger tube of heat-exchanger rig corrodes, and heat-exchanger rig is not allow for weld seam, for the heat exchange in unavoidable heat-exchanger rig
Weld seam at pipe bend, hull outside need to be arranged in.Due to Smoke-heating device operation under positive pressure, in order to ensure its sealing, flue gas
The heat-exchanger rig header tank side of heater must use closed welding with housing, it is contemplated that thermal expansion be present in heat exchanger tube operation
And the problems such as vibrations, Smoke-heating device opposite side is to be flexibly connected with housing, without sealing welding.But due to flue gas
Device is in operation under positive pressure, and now pressure is 500Pa~1500Pa, and opposite side active connection place certainly exists severe corrosive low temperature
Wet flue gas leakage problem, severe corrosive low temperature wet flue gas, temperature at 40 DEG C~50 DEG C, leakage to the cold, temperature at 0 DEG C~50 DEG C,
Exchange heat pipe and heat exchanger shell are caused to corrode after condensation.Therefore seal box is assembled into using shrouding in blow-by weldering side to carry out
Sealing.The flue gas of flue gas heater active connection place escape seals into the shrouding is condensed into acid solution row in the seal box to be formed
Go out, avoid the flue gas of escape from entering air.
But in actual motion, Smoke-heating device is operated in malleation 500Pa~1500Pa environment, the height in flue
40 DEG C~50 DEG C of corrosivity low temperature wet flue gas continually can enter in seal box, and the heat exchanger tube in seal box is elbow welding
Place, if Long Term Contact low temperature, severe corrosive cryogenic gas, the acid solution condensed to the cold, easily there is corruption at the weld bond of heat exchanger tube
Erosion, perforation, trigger leakage problem, greatly shorten Smoke-heating device service life, influence unit safety operation.
Therefore, how to extend the service life of Smoke-heating device, be that those skilled in the art's technology urgently to be resolved hurrily is asked
Topic.
Utility model content
The purpose of this utility model is to provide a kind of Smoke-heating device, and the service life of the Smoke-heating device extends.
To achieve the above object, the utility model provides a kind of Smoke-heating device, including housing, seal box and for adding
The heat-exchanger rig of flue gas in the heat housing, the seal box are sealedly connected on the hull outside, in addition to sealing air pipe and
For conveying the supercharging device of gas into the seal box, the supercharging device is arranged on the sealing air pipe, described close
The import of envelope airduct is located at the port of export of the housing cavity, and the outlet of the sealing air pipe is located in the seal box.
Preferably, the sealing air pipe includes wind inlet section, wind outlet section and is sealedly connected on the wind inlet section and the air-out
Supercharging construction section between section, the supercharging device are arranged on supercharging construction section, and the wind inlet section is provided with air intake valve.
Preferably, the supercharging device and the supercharging construction section are two, two supercharging construction section parallel connection cloth
Put, each supercharging construction section is provided with a supercharging device.
Preferably, in addition to two non-return air doors, each supercharging construction section are provided with a non-return air door, edge
Flow direction of the flue gas in the supercharging construction section, the non-return air door are located in front of the supercharging device；
And/or in addition to two the first motor-operated control valves, each supercharging construction section be provided with first electricity
Dynamic control valve.
Preferably, in addition to for heating the heater of the sealing air inner tube smoke.
Preferably, the heater is two, in addition to two the second electric control valves, the sealing air pipe also include
Bringing-up section and the middle linkage section with being connected at the bringing-up section air intake, pacify with the supercharging at the air intake of the middle linkage section
The wind outlet connection of section is filled, for the wind outlet of the bringing-up section with being connected at the air intake of the wind outlet section, the bringing-up section is two,
Two bringing-up sections are arranged in parallel, and each bringing-up section is provided with a heater and second Electronic control
Valve.
Preferably, the pipeline diameter of the sealing air pipe is equal.
Preferably, in addition to for measuring the thermometer of temperature in the seal box.
Preferably, in addition to temperature gauge linked temperature alarming device, it is described when temperature count value is less than preset value
Warning device is alarmed.
Preferably, gas temperature is more than 80 DEG C in the seal box, and pressure is 1000Pa~3000Pa in the seal box.
In the above-mentioned technical solutions, Smoke-heating device provided by the utility model includes housing, sealing air pipe, supercharging dress
Put, seal box and the heat-exchanger rig for flue gas in heated shell, seal box are sealedly connected on hull outside, supercharging device is used for
Gas is conveyed into seal box, supercharging device is arranged on sealing air pipe, and the import of sealing air pipe is located at the outlet of housing cavity
End, the outlet of sealing air pipe is located in seal box.When Smoke-heating device works, heat-exchanger rig heating is by the cigarette in housing
Gas, dried flue gas are discharged by the outlet of housing.When supercharging device works, it will pass through positioned at the dry flue gas of housing outlets
Sealing air pipe is pumped to seal box.
By foregoing description, in the Smoke-heating device that the application provides, by being passed through in seal box through cigarette
High temperature, malleation flue gas after gas heating devices heat prevent the highly corrosive in housing, low temperature, wet flue gas from leading to as sealing air
The active connection place for crossing heat-exchanger rig escapes into seal box, avoids highly corrosive low temperature wet flue gas from being condensed in seal box, right
The weld and seal box of heat-exchanger rig cause to corrode, and therefore, the service life of Smoke-heating device extends.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer.
The structural representation for the Smoke-heating device that Fig. 1 is provided by the utility model embodiment.
In wherein Fig. 1：1- housings, 2- sealing air pipes, 3- air intakes valve, the motor-operated control valves of 4- first, 5- non-return air doors, 6-
Supercharging device, 7- heaters, 8- heat-exchanger rigs, 9- seal boxes.
Embodiment
Core of the present utility model is to provide a kind of Smoke-heating device, and the service life of the Smoke-heating device extends.
In order that those skilled in the art more fully understands the technical solution of the utility model, it is below in conjunction with the accompanying drawings and real
Applying mode, the utility model is described in further detail.
Fig. 1 is refer to, in a kind of embodiment, the Smoke-heating device of the utility model specific embodiment offer
Including housing 1, sealing air pipe 2, supercharging device 6, seal box 9 and heat-exchanger rig 8 for the flue gas in heated shell 1, supercharging
Device 6 is used to convey gas into seal box 9, wherein, the housing 1 is Smoke-heating device housing, specifically, supercharging device 6
Can be booster fan or booster pump etc..Seal box 9 is sealedly connected on the outside of housing 1, and supercharging device 6 is arranged on sealing air pipe 2
On, the entrance point of sealing air pipe 2 is located at the port of export of the inner chamber of housing 1, and the port of export of sealing air pipe 2 is located in seal box 9.Sealing
Box 9 carries out closed outside all flexible connection side heat exchanger tubes.Specifically, heat-exchanger rig 8 is preferably heater heat exchanger tube, heater
Heat exchanger tube is arranged successively along flue gas fortune direction, and remove smoke heater source of corrosion from source.Due to the flue of desulfurization outlet
Flue-gas temperature is 40 DEG C~50 DEG C, in order to effectively prevent highly corrosive wet flue gas in Smoke-heating device from escaping into seal box 9
It is interior, it is preferable that gas temperature is more than 80 DEG C in seal box 9, and pressure is 1000Pa~3000Pa in seal box 9, while avoids 40 DEG C
~50 DEG C of flue gas is escaped into seal box 9, and situation about being condensed in seal box 9.For the ease of processing sealing air pipe 2,
It is preferred that sealing air pipe 2 is round tube.
When Smoke-heating device works, the heating of heat-exchanger rig 8 passes through by the flue gas in housing 1, dried flue gas
The outlet discharge of housing 1.Supercharging device 6 work when, by positioned at the dry flue gas that housing 1 exports by sealing air pipe 2 pump to
In seal box 9.I.e. supercharging device 6 is realized introduces the tunnel of sealing air pipe 2 by Smoke-heating device outlet high temperature positive flue gas, and finally
Deliver in seal box 9.
By foregoing description, in the Smoke-heating device that the application specific embodiment is provided, by sealing
The high temperature after Smoke-heating device heats, malleation flue gas are passed through in box 9 as sealing air, prevents the highly corrosive in housing 1
Low temperature wet flue gas escapes into seal box 9 by the active connection place of heat-exchanger rig 8, avoids highly corrosive, low temperature, wet flue gas from existing
Condensed in seal box 9, the weld and seal box 9 for exchanging thermal 8 cause to corrode, and avoid highly corrosive low temperature wet flue gas, temperature
Degree is at 40 DEG C~50 DEG C, condensation and dewfall, and remove smoke heater source of corrosion, therefore, the use of Smoke-heating device on source
Life.
On the other hand, hot blast is exported as elevated-temperature seal wind wind regime by the use of Smoke-heating device, filled using flue gas
The malleation of outlet hot blast is put, pressure is realized in 500Pa~1500Pa, high temperature, 80 DEG C of temperature ＞, the reduction total head of supercharging device 6, is subtracted
Power consumption is run less, and the anti-corrosion of Smoke-heating device is realized with relatively low equipment cost and maintenance cost.Because the flue gas is without corruption
Corrosion dry flue gas, and be unit itself flue gas, unit air leak rate of air curtain and oxygen content will not be increased.Heat exchange pipe bend peripheral hardware is put small-sized
Seal box 9 is closed to being carried out outside all flexible connection side heat exchanger tubes, it is not necessary to leaves anticorrosive construction space, does not take field additionally
Ground, small volume, save shrouding sealing cost in seal box 9.
Preferably, sealing air pipe 2 includes wind inlet section, wind outlet section and the supercharging being sealedly connected between wind inlet section and wind outlet section
Construction section, wind inlet section are provided with air intake valve 3, and supercharging device 6 is arranged on supercharging construction section.Specifically, air intake valve 3 can be with
For manually-operated gate, in order to reduce the labor intensity of staff, it is preferable that air intake valve 3 is automatic valve, in order to extend air inlet valve
The service life of door 3, it is preferable that air intake valve 3 is electric butterfly valve.By setting air intake valve 3, when Smoke-heating device stops work
When making, air intake valve 3 is closed, avoids external substance from entering in seal box 9.
In order to improve the operating efficiency of Smoke-heating device, it is preferable that supercharging device 6 and supercharging construction section are two, and two
Individual supercharging construction section is arranged in parallel, and each construction section that is pressurized is provided with a supercharging device 6.By setting two supercharging devices 6,
A preparation and a use, supercharging device 6 is avoided to damage, the situation for causing Smoke-heating device not work, meanwhile, a supercharging can be made
Device 6 works, and another supercharging device 6 overhauls.
Further, the Smoke-heating device also includes two non-return air doors 5, and each construction section that is pressurized is provided with a check
Air door 5, along flow direction of the flue gas in supercharging construction section, non-return air door 5 is located at the front of supercharging device 6, when sealing air pipe is
During round tube, non-return air door 5 is circular non-return air door.Non-return air door 5 is set by being exported in supercharging device 6, a supercharging dress
When putting 6 failure, after another standby supercharging device 6 puts into operation, non-return air door 5 can prevent air blow back from entering failure supercharging device
6, realize the safety inspection of supercharging device 6.
Further, the Smoke-heating device also includes two the first motor-operated control valves 4, and each construction section that is pressurized is provided with one
Individual first motor-operated control valve 4, in order to extend the service life of the first motor-operated control valve 4, it is preferable that the first motor-operated control valve 4 is electricity
Dynamic butterfly valve.Realize remote control Smoke-heating device from leak-tight system by the first motor-operated control valve 4.When a supercharging device 6
It during failure, can remotely start standby supercharging device 6, be switched over by the first motor-operated control valve 4.When the unit throwing stopping time, lead to
The first motor-operated control valve 4 is crossed to connect, isolate Smoke-heating device exit gas.
In order to further extend the service life of Smoke-heating device, it is preferable that the Smoke-heating device also includes being used to add
Heat seal the heater 7 of flue gas in airduct 2.Specifically, heater 7 can be arranged on wind inlet section, wind outlet section or supercharging construction section.
Sealing air is to export high-temperature flue gas (80 DEG C of flue-gas temperature ＞) from Smoke-heating device 7 to draw, need not come into operation during normal operation plus
Hot device 7.When unit throw stop during or Smoke-heating device outlet cigarette temperature it is relatively low when (40 DEG C~50 DEG C of flue-gas temperature), can lead to
Cross heater 7 and sealing air is heated to design temperature, heater 7 can use steam heating/electrical heating form, and heater 7 will be close
Envelope wind is heated to more than 80 DEG C and entered in seal box 9, to avoid highly corrosive wet flue gas after desulfurization from escaping into chance in seal box 9
Acid solution is formed in condensation.Sealing air, the partial fume cigarette temperature are used as by the use of the high temperature after the heating of heat-exchanger rig 8, clean flue gas
About 80 DEG C, the requirement of sealing air design temperature can be met, so as to which the fortune of heater 7 can be stopped during Smoke-heating device normal operation
OK, system power dissipation is reduced.
In order to improve operating efficiency, it is preferable that heater 7 is two, and Smoke-heating device also includes two the second electronic controls
Valve processed.Specifically, can each be pressurized construction section is provided with a heater 7.
Preferably, sealing air pipe 2 also includes bringing-up section and the middle linkage section with being connected at bringing-up section air intake, centre connection
It is connected, is connected at the wind outlet of bringing-up section and the air intake of wind outlet section, bringing-up section with being pressurized the wind outlet of construction section at the air intake of section
For two, two bringing-up sections are arranged in parallel, and each bringing-up section is provided with a heater 7 and second electric control valve.Add
Hot device 7 uses the using and the reserved, avoids one of heater 7 from damaging, the situation of Smoke-heating device cisco unity malfunction.Ensure
Smoke-heating device is safe and reliable when working.In order that obtain the interior air-flow of sealing air pipe 2 balance, it is preferable that the pipeline of sealing air pipe 2
Diameter is equal, certainly, when sealing air pipe 2 is other shapes pipeline, it is preferable that each section of cross section of pipeline is identical, to ensure air-flow
Smoothly pass.
On the basis of above-mentioned each scheme, it is preferable that the Smoke-heating device also includes being used to measure temperature in seal box 9
Thermometer.Further, the Smoke-heating device also include with temperature gauge linked temperature alarming device, when temperature count value is less than
During preset value, warning device alarm, specifically, the warning device can be buzzer warning or indicator light alarm.
It is electronic by sealing air pipe 2, seal box 9, supercharging device 6, heater 7, non-return air door 5, air intake valve 3, first
Control valve 4 and the second electric control valve etc. form a gas-tight seal system, limited to extend making for Smoke-heating device
Use the life-span.Using two supercharging devices 6, two combining forms of heater 7, the using and the reserved, it is ensured that separate unit supercharging device 6 or heating
It can effectively switch during 7 failure of device, ensure effective work of enclosed air system.After the supporting sealing system of Smoke-heating device 7, no
The problems such as anti-corrosion caused by only solving the narrow space of conventional hermetic box 9 is difficult, construction hardly possible, short life, cost height, while solve cigarette
The shortcomings that heat exchanger tube and housing corrosion risk of gas heater are big, reliability is relatively low.It is airtight that Smoke-heating device is provided with this
After sealing system, the severe corrosive wet flue gas in Smoke-heating device cannot be introduced into condensation hydrops in seal box 9, simple in construction,
It is reliable, the anti-corrosion of Smoke-heating device is realized with relatively low equipment cost and maintenance cost.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of Smoke-heating device, including housing (1), seal box (9) and the heat exchange for heating the housing (1) interior flue gas
Device (8), the seal box (9) are sealedly connected on the outside of the housing (1), it is characterised in that also including sealing air pipe (2) and
For the supercharging device (6) of the conveying gas into the seal box (9), the supercharging device is arranged on the sealing air pipe (2)
On, the import of the sealing air pipe (2) is located at the port of export of the housing (1) inner chamber, and the outlet of the sealing air pipe (2) is located at
In the seal box (9).
2. Smoke-heating device according to claim 1, it is characterised in that the sealing air pipe (2) includes wind inlet section, gone out
Wind section and the supercharging construction section being sealedly connected between the wind inlet section and the wind outlet section, the supercharging device (6) are arranged on
It is pressurized on construction section, the wind inlet section is provided with air intake valve (3).
3. Smoke-heating device according to claim 2, it is characterised in that the supercharging device (6) and the supercharging peace
Dress section is two, and two supercharging construction sections are arranged in parallel, and each supercharging construction section is provided with a supercharging
Device (6).
4. Smoke-heating device according to claim 3, it is characterised in that also including two non-return air doors (5), Mei Gesuo
State supercharging construction section and be provided with a non-return air door (5), it is described along flow direction of the flue gas in the supercharging construction section
Non-return air door (5) is located in front of the supercharging device (6)；
And/or in addition to two the first motor-operated control valves (4), each supercharging construction section be provided with first electricity
Dynamic control valve (4).
5. according to the Smoke-heating device any one of claim 2-4, it is characterised in that also include described for heating
The heater (7) of sealing air pipe (2) interior flue gas.
6. Smoke-heating device according to claim 5, it is characterised in that the heater (7) is two, in addition to two
Individual second electric control valve, the sealing air pipe (2) also include bringing-up section and the centre with being connected at the bringing-up section air intake
Linkage section, the wind outlet at the air intake of the middle linkage section with the supercharging construction section are connected, the wind outlet of the bringing-up section
It is connected with the air intake of the wind outlet section, the bringing-up section is two, and two bringing-up sections are arranged in parallel, each heating
Section is provided with a heater (7) and second electric control valve.
7. Smoke-heating device according to claim 6, it is characterised in that the pipeline diameter phase of the sealing air pipe (2)
Deng.
8. Smoke-heating device according to claim 6, it is characterised in that also include being used to measure the seal box (9)
The thermometer of interior temperature.
9. Smoke-heating device according to claim 8, it is characterised in that also include and temperature gauge linked temperature alarming
Device, when temperature count value is less than preset value, the warning device alarm.
10. Smoke-heating device according to claim 1, it is characterised in that the interior gas temperature of the seal box (9) is more than
80 DEG C, the interior pressure of the seal box (9) is 1000Pa~3000Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720998780.2U CN207112849U (en) | 2017-08-10 | 2017-08-10 | Smoke-heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720998780.2U CN207112849U (en) | 2017-08-10 | 2017-08-10 | Smoke-heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207112849U true CN207112849U (en) | 2018-03-16 |
Family
ID=61578464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720998780.2U Active CN207112849U (en) | 2017-08-10 | 2017-08-10 | Smoke-heating device |
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| Country | Link |
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| CN (1) | CN207112849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108839966A (en) * | 2018-07-26 | 2018-11-20 | 中国电建集团成都勘测设计研究院有限公司 | Heating and cooling system for sandstone aggregate |
-
2017
- 2017-08-10 CN CN201720998780.2U patent/CN207112849U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108839966A (en) * | 2018-07-26 | 2018-11-20 | 中国电建集团成都勘测设计研究院有限公司 | Heating and cooling system for sandstone aggregate |
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