CN209540935U - Can with high temperature from purging and anti-blocking corrosion-resistant air preheater - Google Patents
Can with high temperature from purging and anti-blocking corrosion-resistant air preheater Download PDFInfo
- Publication number
- CN209540935U CN209540935U CN201920034769.3U CN201920034769U CN209540935U CN 209540935 U CN209540935 U CN 209540935U CN 201920034769 U CN201920034769 U CN 201920034769U CN 209540935 U CN209540935 U CN 209540935U
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- China
- Prior art keywords
- pipeline
- air
- inlet
- outlet
- high temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 22
- 230000007797 corrosion Effects 0.000 title claims abstract description 20
- 238000010926 purge Methods 0.000 title claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003546 flue gas Substances 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000001351 cycling effect Effects 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract description 6
- 239000004071 soot Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 108010066278 cabin-4 Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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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- Air Supply (AREA)
Abstract
The utility model, which discloses one kind, to belong to the technical field of power plant's air heating plant with high temperature from purging and anti-blocking corrosion-resistant air preheater.It includes air preheating housing and rotor, is equipped with a wind cabin, secondary wind cabin and flue gas storehouse in air preheating housing, and rotor is located in air preheating housing, and rotor is equipped with heat accumulating element；The inlet and outlet of wind cabin is connected separately with the first inlet pipeline and first outlet pipeline, primary air fan is additionally provided on first inlet pipeline, the inlet and outlet of secondary wind cabin is connected to the second inlet pipeline and second outlet pipeline respectively, secondary air fan is additionally provided on second inlet pipeline, the inlet and outlet in flue gas storehouse is separately connected gas inlet pipeline and exhanst gas outlet pipeline；It is additionally provided with circulating air pipeline.It can be energy saving, and soot blowing and anti-corrosion effect are significant, and small investment, structure are simple.
Description
Technical field
The utility model belongs to the technical field of power plant's air heating plant, can be boasted more particularly, to one kind with high temperature
It sweeps and anti-blocking corrosion-resistant air preheater.
Background technique
Rotary regenerative air preheater is operated normally as the most important heat-exchange apparatus of power plant's back-end ductwork for electric power factory equipment
It provides safeguard, reduces the exhaust gas temperature of flue, improve boiler thermal efficiency.However recent years, coal quality contains in coal-burning power plant
Sulfur content is exceeded, boiler sootblowing steam band water, and winter steam air heater investment is not in time and heat accumulating element arrangement closely causes air preheat
The critical issue of device stifled ash and corrosion.
For Ash Blocking in Air Preheater and seriously corroded problem, at present frequently with installation steam air heater, hot wind in coal-burning power plant
The means such as recycling, steam soot blowing.Using the thermal wind sensor technology of installation steam air heater or installation circulating fan, maintenance is simple,
But it invests less but less economical；A large amount of energy, and if mode of operation can be consumed using the technological means of steam soot blowing
It is improper, it will cause heat exchange element damage, reduce the service life of component.
Summary of the invention
The utility model, which provides one kind, can save energy with high temperature from purging and anti-blocking corrosion-resistant air preheater
Source, soot blowing and anti-corrosion effect are significant, and small investment, structure are simple.
One kind can be empty with high temperature from purging and anti-blocking corrosion-resistant air preheater, including air preheating housing and rotor
A wind cabin, secondary wind cabin and flue gas storehouse are equipped in air preheater shell, rotor is located in air preheating housing, sets on rotor
There is heat accumulating element；The inlet and outlet of wind cabin is connected separately with the first inlet pipeline and first outlet pipeline, the first import
Primary air fan is additionally provided on pipeline, the inlet and outlet of secondary wind cabin connects with the second inlet pipeline and second outlet pipeline respectively
It is logical, secondary air fan is additionally provided on the second inlet pipeline, the inlet and outlet in flue gas storehouse is separately connected gas inlet pipeline and flue gas
Outlet conduit；It is additionally provided with circulating air pipeline, the input terminal of circulating air pipeline is connected to first outlet pipeline, circulating air
The output end of pipeline is connected to the input terminal of secondary wind cabin.
It is above-mentioned can be with high temperature from purging and anti-blocking corrosion-resistant air preheater, the output end of circulating air pipeline is equipped with injection
Device, injection apparatus include injection shell and several nozzles, and nozzle is arranged in column.
It is above-mentioned can with high temperature from purging and anti-blocking corrosion-resistant air preheater, the bore of nozzle from input terminal to output end by
Tapered small, the longitudinal section of nozzle is in up-small and down-big trapezoidal.
It is above-mentioned can with high temperature from purging and anti-blocking corrosion-resistant air preheater, the output end of nozzle be rectangle.
It is above-mentioned can with high temperature from purging and anti-blocking corrosion-resistant air preheater, the output end of the nozzle it is rounded.
Compared with prior art, the utility model adds circulating air pipeline, by the hot wind of the first outlet pipeline of high temperature
Introduce the second inlet pipeline of low temperature.The bore of the nozzle of circulating air pipeline is gradually reduced from input terminal to output end, in this way
The wind speed that nozzle can be made to spray is up to 300m/s, and the pressure of a wind cabin is about 10~15KPa, the secondary wind cabin
Pressure is about 2~5KPa, carries out purging heating to heat accumulating element using wind cabin of 320~340 DEG C of high temperature by the two pressure difference.
High temperature, high pressure, high-speed circulating hot wind can be formed after nozzle, are strengthened to the continuous purging of heat accumulating element and heating, are conducive to
It reduces heat-exchange time and accelerates heat exchange, enhance soot blowing effect, remove ammonium hydrogen sulfate in time, improve the service life of heat accumulating element；
The heat exchange for not influencing flue gas storehouse side simultaneously does not introduce high temperature circulation blower fan, improves overall security, economy and reliability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the cross-sectional view of A-A in Fig. 1；
Fig. 3 is the circulating air pipeline configuration schematic diagram of the utility model；
Fig. 4 is the structural schematic diagram of the nozzle of the utility model；
Fig. 5 is that the nozzle of the utility model obtains structural schematic diagram；
Fig. 6 is the longitudinal sectional view of the utility model；
Label in attached drawing indicates: 1. air preheating housings, 3. wind cabins, 4. 2 wind cabins, 5. flue gas storehouses, 31.
First inlet pipeline, 32. first outlet pipelines, 41. second inlet pipelines, 42. second outlet pipelines, 51. gas inlet pipelines,
52. exhanst gas outlet pipeline, 6. circulating air pipelines, 61. injection shells, 62. nozzles.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is for illustrating the utility model.
As shown in Figures 1 to 6, the utility model includes air preheating housing 1 and rotor, in air preheating housing 1
Equipped with a wind cabin 3, secondary wind cabin 4 and flue gas storehouse 5, rotor is located in air preheating housing 1, and rotor is equipped with accumulation of heat member
Part；The inlet and outlet of wind cabin 3 is separately connected the first inlet pipeline 31 and first outlet pipeline 32, the first inlet pipeline 31
On be additionally provided with primary air fan, the inlet and outlet of secondary wind cabin 4 connects with the second inlet pipeline 41 and second outlet pipeline 42 respectively
Logical, the second inlet pipeline 41 is additionally provided with secondary air fan, and the inlet and outlet in flue gas storehouse 5 is separately connected gas inlet pipeline 51 and cigarette
Gas outlet conduit 52；It is additionally provided with circulating air pipeline 6, the input terminal of circulating air pipeline 6 is connected to first outlet pipeline 32,
The output end of circulating air pipeline 6 is connected to the input terminal of secondary wind cabin 4.
The output end of circulating air pipeline 6 is equipped with injection apparatus, and injection apparatus includes injection shell 61 and several nozzles
62, nozzle 62 is arranged in column, and the output end of nozzle 62 is rectangle or circle；Impact force, the longitudinal section of nozzle 62 can be increased
In up-small and down-big trapezoidal, the wind pressure of output end, the effect of the dust on enhancing purging heat accumulating element can be increased.
Rotor rotation successively exists by flue gas storehouse side, 3 side of wind cabin and 4 side of secondary wind cabin, metal heat accumulating element respectively
The heat absorption of flue gas storehouse side, the 4 side heat release of 3 side of wind cabin and secondary wind cabin.Flue gas is by gas inlet pipeline 51 through flue gas storehouse to flue gas
Outlet conduit 52 forms low-temperature flue gas, the heat absorption of this process heat accumulating element.Then through flowing through in primary air fan and a wind cabin
High temperature First air is formed after air heat absorption, high temperature First air is used by pipeline to combustion apparatus, another small a part of high temperature
First air drains to form circulating air through circulating air pipeline, and circulating air is blown out by the nozzle of circulating air pipeline to Secondary Air
On the heat accumulating element in storehouse 4, the effect of the dust stratification on purging heat accumulating element is had reached.In addition, air is passed through by the second inlet pipeline 41
Secondary air fan, secondary wind cabin 4 to second outlet pipeline 42 form high temperature Secondary Air.
A part of heat primary air storehouse after air preheater heats is sent through circulating air pipeline to air preheater
Secondary wind cabin input terminal, exchanges heat in air preheater with heat accumulating element, improves the minimum temperature of heat accumulating element, while right
The temperature of the timely soot blowing of heat accumulating element, air preheater low-temperature zone metal heat accumulating element is lower, while containing sulphur in flue gas, flue gas
Ammonium hydrogen sulfate is easily generated on heat accumulating element in low-temperature zone moisture condensation and forms low-temperature corrosion, and current high-temperature hot-air is to low-temperature zone accumulation of heat member
Part is purged, and the wind pressure of circulating air can be realized using the pressure difference of a wind cabin and secondary wind cabin to storage up to 5~13KPa
Thermal element automatically continuously purges.The low-temperature corrosion of heating hardware is avoided, circulating air is reachable in the circulating air pipeline
320~340 DEG C, prevent low-temperature corrosion and hydrogen sulfate ammonia corrosion.The circulating air flow velocity is 0~300m/s, improves heat exchange
Amount reduces heat transfer temperature difference.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into modification.
Claims (5)
1. one kind can be purged certainly with high temperature and anti-blocking corrosion-resistant air preheater, which is characterized in that including air preheating housing
(1) and rotor a wind cabin (3), secondary wind cabin (4) and flue gas storehouse (5), are equipped in air preheating housing (1), rotor is located at
In air preheating housing (1), rotor is equipped with heat accumulating element；The inlet and outlet of wind cabin (3) is connected separately with first
Inlet pipeline (31) and first outlet pipeline (32) are additionally provided with primary air fan on the first inlet pipeline (31), secondary wind cabin (4)
Inlet and outlet is connected to the second inlet pipeline (41) and second outlet pipeline (42) respectively, and the second inlet pipeline is also set on (41)
There is secondary air fan, the inlet and outlet of flue gas storehouse (5) is separately connected gas inlet pipeline (51) and exhanst gas outlet pipeline (52)；Also
Equipped with circulating air pipeline (6), the input terminal of circulating air pipeline (6) is connected to first outlet pipeline (32), cycling hot air hose
The output end in road (6) is connected to the input terminal of secondary wind cabin (4).
2. it is according to claim 1 can with high temperature from purging and anti-blocking corrosion-resistant air preheater, it is characterised in that: circulation
The output end of hot air duct (6) is equipped with injection apparatus, and injection apparatus includes injection shell (61) and several nozzles (62), nozzle
(62) it arranges in column.
3. it is according to claim 2 can with high temperature from purging and anti-blocking corrosion-resistant air preheater, it is characterised in that: nozzle
(62) bore is gradually reduced from input terminal to output end, and the longitudinal section of nozzle (62) is in up-small and down-big trapezoidal.
4. it is according to claim 3 can with high temperature from purging and anti-blocking corrosion-resistant air preheater, it is characterised in that: nozzle
(62) output end is rectangle.
5. it is according to claim 3 can with high temperature from purging and anti-blocking corrosion-resistant air preheater, it is characterised in that: it is described
The output end of nozzle (62) is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920034769.3U CN209540935U (en) | 2019-01-09 | 2019-01-09 | Can with high temperature from purging and anti-blocking corrosion-resistant air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920034769.3U CN209540935U (en) | 2019-01-09 | 2019-01-09 | Can with high temperature from purging and anti-blocking corrosion-resistant air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209540935U true CN209540935U (en) | 2019-10-25 |
Family
ID=68268909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920034769.3U Expired - Fee Related CN209540935U (en) | 2019-01-09 | 2019-01-09 | Can with high temperature from purging and anti-blocking corrosion-resistant air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209540935U (en) |
-
2019
- 2019-01-09 CN CN201920034769.3U patent/CN209540935U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 |