CN107860014B - A kind of method of power plant sleeve-type chimney control corrosion rate leakage - Google Patents
A kind of method of power plant sleeve-type chimney control corrosion rate leakage Download PDFInfo
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- CN107860014B CN107860014B CN201710893386.7A CN201710893386A CN107860014B CN 107860014 B CN107860014 B CN 107860014B CN 201710893386 A CN201710893386 A CN 201710893386A CN 107860014 B CN107860014 B CN 107860014B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B7/10—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses by special construction of the frame members
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention belongs to chimney anticorrosions to lose leakage technology field, disclose a kind of method of power plant sleeve-type chimney control corrosion rate leakage, it solves smoke spillage at the chimney internal cylinder corrosion hole of power plant sleeve-type chimney, further corrodes chimney structure, corrosion hole deteriorates the problem of increasing.Chimney outer cylinder is sealed processing by the present invention, it is ensured that the tightness of chimney outer cylinder.Then using the pressure being passed through when the one way in which such as compressed air, nitrogen cylinder gas supply, air blower air-supply maintain chimney interlayer space pressure to be greater than flue gas emission in chimney internal cylinder, and pressure difference is greater than 1KPa therebetween, flue gas leaks caused by preventing because of chimney internal cylinder corrosion failure, the volatile alkaline substances such as ammonia, ring amine can also be passed through in interlayer simultaneously, to neutralize the sour gas of leakage position, deteriorate widened happen to prevent corrosion hole from continuing corrosion, it is ensured that chimney overall structure long-term safety stable operation.
Description
Technical field
The invention belongs to chimney anticorrosions to lose leakage technology field, and in particular to a kind of power plant sleeve-type chimney control corrosion rate
The method of leakage.
Background technique
Increasingly strict with domestic and international environmental requirement, coal-burning power plant, the country be the SO in control flue gas emission at present2Contain
Amount, it is most of all to use Wet Flue Gas Desulfurization Technique, but flue gas is reduced through wet-method desulfurized fume temperature, and humidity increases, in addition portion
Point power plant does not put into operation GGH, after wet flue gas enters chimney internal cylinder, is passed through with the state of micro-positive pressure from chimney, remaining sour gas
Body is easy to condense into the strong acid solution of corrosivity on chimney wall, causes to corrode to the material of chimney internal cylinder structure.Usually
In order to avoid chimney wall corrodes, the fume side of chimney internal cylinder has all carried out preservative treatment, and common anti-corrosion method mainly has:
Anticorrosive paint is applied, acid-resistant glass brick is pasted, steel stack wall is laid with the methods of titanium plate.Since chimney height is in 200m or so,
Anti-corrosion area is huge (mostly in 8000m2Left and right), all there is different degrees of defect in anti_corrosion construction quality, therefore most chimneys at present
All occur different corrosion leakage situations in operational process after anti-corrosion, brings and seriously affect to power plant safety production.
Date of publication is on 2 25th, 2015, and publication No. is to disclose a kind of anti-corrosion in the Chinese patent of CN104372980A
The method of chimney lining structure and the chimney anticorrosion erosion of erosion, the chimney pass through in chimney laid inside vitreous foam brick lining
Mode makes chimney reach etch-proof effect, and anti-corrosion area is huge, and anticorrosive construction gigantic project, difficulty of construction is big, anticorrosive construction
There are many defects for quality.
The day for announcing is on November 25th, 2015, and publication No. is to disclose a kind of anti-in the Chinese patent of CN102269417B
Corrode chimney and chimney anticorrosion etching method, the chimney is reaching chimney by way of chimney laid inside frp lining
To etch-proof effect, anti-corrosion area is huge, and anticorrosive construction gigantic project, difficulty of construction is big, and there are all for anti_corrosion construction quality
More defects.
Summary of the invention
The present invention in order to prevent sleeve-type chimney inner cylinder because caused by corrosion sour corrosion flue gas leak, lead to corrosion location hole
Hole area increases, fume leakage further corrodes destruction to structure in chimney interlayer at corrosion hole, proposes a kind of power generation
The side of factory's sleeve-type chimney control corrosion rate leakage, this method key step are as follows: 1) chimney outer cylinder is sealed processing, it is ensured that cigarette
The tightness of chimney outer cylinder；2) then take be passed through compressed air, nitrogen cylinder gas supply, air blower air-supply etc. modes maintain chimney interlayer
The pressure when pressure in space is greater than flue gas emission in chimney internal cylinder, flue gas leaks caused by preventing because of internal cylinder chimney corrosion failure；
3) volatile alkaline substances such as ammonia, ring amine are passed through in interlayer simultaneously, to neutralize the sour gas of leakage position.Using this
Method can achieve control corrosion rate hole and continue the widened purpose of corrosion deterioration, it is ensured that the long-term safety and stability of chimney overall structure
Operation.
The technical solution adopted by the present invention to solve the technical problems are as follows: a kind of power plant sleeve-type chimney control corrosion rate is let out
Chimney outer cylinder is sealed processing, it is ensured that the tightness of chimney outer cylinder by the method for leakage；Pressure is provided to chimney interlayer, makes cigarette
When the pressure of chimney interlayer space is greater than flue gas emission when the pressure in chimney internal cylinder space, the chimney interlayer space and flue gas emission
Chimney internal cylinder space pressure difference be greater than 1KPa；Meanwhile volatile alkaline substance is passed through in chimney interlayer.When chimney interlayer
When the pressure in space is greater than flue gas emission when the pressure in chimney internal cylinder space, the flue gas in chimney internal cylinder cannot be introduced into chimney folder
In layer, chimney can control from further corroding；The volatile alkaline substance alkalinity being passed through in chimney, can neutralize in chimney
The acidic materials in flue gas at cylinder corrosion hole, prevent corrosion hole from further deteriorating expansion.
The pressure of chimney interlayer space is maintained by way of being passed through compressed air, nitrogen cylinder gas supply or air blower air-supply
In 10KPa.
Using the clay, elastic rubber or plastics of UV resistant as filler, by chimney top, flue adapter and other
Gap is filled sealing between building structure, and carries out consolidation process to filler, it is ensured that chimney interlayer pressure is filled out in 10KPa
Object is filled not loosen.When the pressure of chimney interlayer space maintains 10KPa, chimney interlayer space and cigarette when flue gas emission
The pressure difference in chimney inner cylinder space is greater than 1KPa, can prevent the smoke spillage in chimney internal cylinder into chimney interlayer completely.
The observation vent window of chimney outer cylinder is the plastic-steel structure glass material of tolerable 10KPa pressure.Plastic-steel structure glass
The observation vent window of material not only can be convenient observation chimney inner case, but also can guarantee to observe the intensity of vent window.
It is sealed processing with the installation gap of the clay of UV resistant, elastic rubber or plastics to observation vent window, really
Guarantor's chimney interlayer pressure is observed vent window in 10KPa and is not loosened.
Pressure-measuring instrument is set at the observation vent window at 50m, 100m, 150m and 200m height, and the pressure is surveyed
The solar-powered transmission signal of measuring appratus.The setting of pressure-measuring instrument, convenient for the pressure in monitoring chimney interlayer, to ensure
Pressure energy in chimney interlayer maintains 10KPa.
The chimney bottom is provided with the doorframe structure of tolerable 10KPa pressure, and the inleakage of the doorframe structure is less than
10 m3/min。
2-6 venthole and a sliding door are provided on the doorframe structure, the venthole is for connecting air supply pipe
Road, the sliding door are passed in and out for inspection personnel.
A length of 50-500mm of the venthole, the width of the venthole are 50-500mm.
A height of 1000mm-1500mm of the sliding door, the width of the sliding door are 500mm-1000mm.
The volatile alkaline substance is ammonia or ring amine.
Compared with prior art, the present invention has the advantages that: maintaining chimney folder by doing encapsulation process to chimney interlayer
Stressor layer is greater than chimney internal cylinder pressure, so that the flue gas in inner cylinder does not leak to chimney interlayer from corrosion hole；Simultaneously in cigarette
It is passed through volatile alkaline substance in chimney interlayer, the acid ingredient in flue gas to neutralize corrosion hole position.The present invention can be controlled
The deterioration that further corrodes of tobacco curing chimney corrosion hole expands, it is ensured that chimney overall structure long-term safety stable operation.
Specific embodiment
Below by embodiment, the technical solutions of the present invention will be further described, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
Embodiment 1.
A kind of method of power plant sleeve-type chimney control corrosion rate leakage in the present embodiment, first uses the clay of UV resistant
As filler to gap is sealed processing between other building structure at chimney top, flue adapter, it is ensured that chimney outer cylinder
Tightness, and to filler carry out consolidation process, make filler can tolerate 10KPa pressure；To be passed through the side of compressed air
Formula makes the pressure of chimney interlayer space maintain 10KPa, at this point, chimney when the pressure of chimney interlayer space is greater than flue gas emission
The pressure difference in the chimney internal cylinder space when pressure in inner cylinder space, the chimney interlayer space and flue gas emission is greater than 1KPa；Together
When, ammonia is passed through in chimney interlayer.When the pressure of chimney interlayer space maintains 10KPa, chimney interlayer space and flue gas
The pressure difference in chimney internal cylinder space when discharge is greater than 1KPa, and the smoke spillage in chimney internal cylinder can be prevented to press from both sides to chimney completely
In layer, chimney can control from further corroding；The ammonia being passed through in chimney can neutralize at chimney internal cylinder corrosion hole
Acidic materials in flue gas prevent corrosion hole from further deteriorating expansion.
In the present embodiment, the observation vent window of chimney outer cylinder is the plastic-steel structure glass material of tolerable 10KPa pressure, institute
It states and is sealed processing with the clay of UV resistant at the installation gap of observation vent window, it is ensured that chimney interlayer pressure is in 10KPa
When observation vent window do not loosen.The observation vent window of plastic-steel structure glass material both can be convenient feelings inside observation chimney
Condition, and can guarantee to observe the intensity of vent window.
In the present embodiment, pressure-measuring instrument is set at the observation vent window at 50m, 100m, 150m and 200m height,
The solar-powered transmission signal of pressure-measuring instrument.The setting of pressure-measuring instrument, convenient in monitoring chimney interlayer
Pressure, to ensure that the pressure energy in chimney interlayer maintains 10KPa.
In the present embodiment, the chimney bottom is provided with the doorframe structure of tolerable 10KPa pressure, the doorframe structure
Inleakage is less than 10 m3/min.2-6 venthole and a sliding door are provided on the doorframe structure, the venthole is used
In connection supply air line, the sliding door is passed in and out for inspection personnel.A length of 50-500mm of the venthole, the venthole
Width be 50-500mm.A height of 1000mm-1500mm of the sliding door, the width of the sliding door are 500mm-1000mm.
Embodiment 2.
A kind of method of power plant sleeve-type chimney control corrosion rate leakage in the present embodiment, first uses the elasticity of UV resistant
Rubber is as filler to gap is sealed processing between other building structure at chimney top, flue adapter, it is ensured that chimney
The tightness of outer cylinder, and consolidation process is carried out to filler, so that filler is can tolerate the pressure of 10KPa；To be passed through compressed air
Mode, so that the pressure of chimney interlayer space is maintained 10KPa, at this point, the pressure of chimney interlayer space be greater than flue gas emission when
The pressure in chimney internal cylinder space, the chimney interlayer space and the pressure difference in chimney internal cylinder space when flue gas emission are greater than
1KPa；Meanwhile ammonia is passed through in chimney interlayer.When the pressure of chimney interlayer space maintains 10KPa, chimney interlayer space
It is greater than 1KPa with the pressure difference in chimney internal cylinder space when flue gas emission, the smoke spillage in chimney internal cylinder can be prevented to arrive completely
In chimney interlayer, chimney can control from further corroding；The ammonia being passed through in chimney can neutralize chimney internal cylinder etch pit
The acidic materials in flue gas at hole prevent corrosion hole from further deteriorating expansion.
In the present embodiment, the observation vent window of chimney outer cylinder is the plastic-steel structure glass material of tolerable 10KPa pressure, institute
It states and is sealed processing with UV resistant elastic rubber at the installation gap of observation vent window, it is ensured that chimney interlayer pressure exists
Vent window is observed when 10KPa not loosen.The observation vent window of plastic-steel structure glass material both can be convenient in observation chimney
Portion's situation, and can guarantee to observe the intensity of vent window.
In the present embodiment, pressure-measuring instrument is set at the observation vent window at 50m, 100m, 150m and 200m height,
The solar-powered transmission signal of pressure-measuring instrument.The setting of pressure-measuring instrument, convenient in monitoring chimney interlayer
Pressure, to ensure that the pressure energy in chimney interlayer maintains 10KPa.
In the present embodiment, the chimney bottom is provided with the doorframe structure of tolerable 10KPa pressure, the doorframe structure
Inleakage is less than 10 m3/min.2-6 venthole and a sliding door are provided on the doorframe structure, the venthole is used
In connection supply air line, the sliding door is passed in and out for inspection personnel.A length of 50-500mm of the venthole, the venthole
Width be 50-500mm.A height of 1000mm-1500mm of the sliding door, the width of the sliding door are 500mm-1000mm.
Embodiment 3.
A kind of method of power plant sleeve-type chimney control corrosion rate leakage in the present embodiment, first uses the plastics of UV resistant
As filler to gap is sealed processing between other building structure at chimney top, flue adapter, it is ensured that chimney outer cylinder
Tightness, and to filler carry out consolidation process, make filler can tolerate 10KPa pressure；To be passed through the side of compressed air
Formula makes the pressure of chimney interlayer space maintain 10KPa, at this point, chimney when the pressure of chimney interlayer space is greater than flue gas emission
The pressure difference in the chimney internal cylinder space when pressure in inner cylinder space, the chimney interlayer space and flue gas emission is greater than 1KPa；Together
When, ammonia is passed through in chimney interlayer.When the pressure of chimney interlayer space maintains 10KPa, chimney interlayer space and flue gas
The pressure difference in chimney internal cylinder space when discharge is greater than 1KPa, and the smoke spillage in chimney internal cylinder can be prevented to press from both sides to chimney completely
In layer, chimney can control from further corroding；The ammonia being passed through in chimney can neutralize at chimney internal cylinder corrosion hole
Acidic materials in flue gas prevent corrosion hole from further deteriorating expansion.
In the present embodiment, the observation vent window of chimney outer cylinder is the plastic-steel structure glass material of tolerable 10KPa pressure, institute
It states and is sealed processing with the plastics of UV resistant at the installation gap of observation vent window, it is ensured that chimney interlayer pressure is in 10KPa
When observation vent window do not loosen.The observation vent window of plastic-steel structure glass material both can be convenient feelings inside observation chimney
Condition, and can guarantee to observe the intensity of vent window.
In the present embodiment, pressure-measuring instrument is set at the observation vent window at 50m, 100m, 150m and 200m height,
The solar-powered transmission signal of pressure-measuring instrument.The setting of pressure-measuring instrument, convenient in monitoring chimney interlayer
Pressure, to ensure that the pressure energy in chimney interlayer maintains 10KPa.
In the present embodiment, the chimney bottom is provided with the doorframe structure of tolerable 10KPa pressure, the doorframe structure
Inleakage is less than 10 m3/min.2-6 venthole and a sliding door are provided on the doorframe structure, the venthole is used
In connection supply air line, the sliding door is passed in and out for inspection personnel.A length of 50-500mm of the venthole, the venthole
Width be 50-500mm.A height of 1000mm-1500mm of the sliding door, the width of the sliding door are 500mm-1000mm.
Embodiment 4.
A kind of method of power plant sleeve-type chimney control corrosion rate leakage in the present embodiment, first uses the clay of UV resistant
As filler to gap is sealed processing between other building structure at chimney top, flue adapter, it is ensured that chimney outer cylinder
Tightness, and to filler carry out consolidation process, make filler can tolerate 10KPa pressure；In a manner of nitrogen cylinder gas supply,
The pressure of chimney interlayer space is set to maintain 10KPa, at this point, chimney internal cylinder when the pressure of chimney interlayer space is greater than flue gas emission
The pressure difference in the chimney internal cylinder space when pressure in space, the chimney interlayer space and flue gas emission is greater than 1KPa；Meanwhile
Ammonia is passed through in chimney interlayer.When the pressure of chimney interlayer space maintains 10KPa, when chimney interlayer space is with flue gas emission
Chimney internal cylinder space pressure difference be greater than 1KPa, can prevent the smoke spillage in chimney internal cylinder into chimney interlayer completely,
Chimney be can control from further corroding；The ammonia being passed through in chimney can neutralize the flue gas at chimney internal cylinder corrosion hole
In acidic materials, prevent corrosion hole further deteriorate expansion.
In the present embodiment, the observation vent window of chimney outer cylinder is the plastic-steel structure glass material of tolerable 10KPa pressure, institute
It states and is sealed processing with the clay of UV resistant at the installation gap of observation vent window, it is ensured that chimney interlayer pressure is in 10KPa
When observation vent window do not loosen.The observation vent window of plastic-steel structure glass material both can be convenient feelings inside observation chimney
Condition, and can guarantee to observe the intensity of vent window.
In the present embodiment, pressure-measuring instrument is set at the observation vent window at 50m, 100m, 150m and 200m height,
The solar-powered transmission signal of pressure-measuring instrument.The setting of pressure-measuring instrument, convenient in monitoring chimney interlayer
Pressure, to ensure that the pressure energy in chimney interlayer maintains 10KPa.
In the present embodiment, the chimney bottom is provided with the doorframe structure of tolerable 10KPa pressure, the doorframe structure
Inleakage is less than 10 m3/min.2-6 venthole and a sliding door are provided on the doorframe structure, the venthole is used
In connection supply air line, the sliding door is passed in and out for inspection personnel.A length of 50-500mm of the venthole, the venthole
Width be 50-500mm.A height of 1000mm-1500mm of the sliding door, the width of the sliding door are 500mm-1000mm.
Embodiment 5.
A kind of method of power plant sleeve-type chimney control corrosion rate leakage in the present embodiment, first uses the clay of UV resistant
As filler to gap is sealed processing between other building structure at chimney top, flue adapter, it is ensured that chimney outer cylinder
Tightness, and to filler carry out consolidation process, make filler can tolerate 10KPa pressure；In a manner of air blower air-supply,
The pressure of chimney interlayer space is set to maintain 10KPa, at this point, chimney internal cylinder when the pressure of chimney interlayer space is greater than flue gas emission
The pressure difference in the chimney internal cylinder space when pressure in space, the chimney interlayer space and flue gas emission is greater than 1KPa；Meanwhile
Ammonia is passed through in chimney interlayer.When the pressure of chimney interlayer space maintains 10KPa, when chimney interlayer space is with flue gas emission
Chimney internal cylinder space pressure difference be greater than 1KPa, can prevent the smoke spillage in chimney internal cylinder into chimney interlayer completely,
Chimney be can control from further corroding；The ammonia being passed through in chimney can neutralize the flue gas at chimney internal cylinder corrosion hole
In acidic materials, prevent corrosion hole further deteriorate expansion.
In the present embodiment, the observation vent window of chimney outer cylinder is the plastic-steel structure glass material of tolerable 10KPa pressure, institute
It states and is sealed processing with the clay of UV resistant at the installation gap of observation vent window, it is ensured that chimney interlayer pressure is in 10KPa
When observation vent window do not loosen.The observation vent window of plastic-steel structure glass material both can be convenient feelings inside observation chimney
Condition, and can guarantee to observe the intensity of vent window.
In the present embodiment, pressure-measuring instrument is set at the observation vent window at 50m, 100m, 150m and 200m height,
The solar-powered transmission signal of pressure-measuring instrument.The setting of pressure-measuring instrument, convenient in monitoring chimney interlayer
Pressure, to ensure that the pressure energy in chimney interlayer maintains 10KPa.
In the present embodiment, the chimney bottom is provided with the doorframe structure of tolerable 10KPa pressure, the doorframe structure
Inleakage is less than 10 m3/min.2-6 venthole and a sliding door are provided on the doorframe structure, the venthole is used
In connection supply air line, the sliding door is passed in and out for inspection personnel.A length of 50-500mm of the venthole, the venthole
Width be 50-500mm.A height of 1000mm-1500mm of the sliding door, the width of the sliding door are 500mm-1000mm.
Embodiment 6.
A kind of method of power plant sleeve-type chimney control corrosion rate leakage in the present embodiment, first uses the clay of UV resistant
As filler to gap is sealed processing between other building structure at chimney top, flue adapter, it is ensured that chimney outer cylinder
Tightness, and to filler carry out consolidation process, make filler can tolerate 10KPa pressure；In a manner of air blower air-supply,
The pressure of chimney interlayer space is set to maintain 10KPa, at this point, chimney internal cylinder when the pressure of chimney interlayer space is greater than flue gas emission
The pressure difference in the chimney internal cylinder space when pressure in space, the chimney interlayer space and flue gas emission is greater than 1KPa；Meanwhile
Cyclohexylamine is passed through in chimney interlayer.When the pressure of chimney interlayer space maintains 10KPa, chimney interlayer space and flue gas emission
When the pressure difference in chimney internal cylinder space be greater than 1KPa, can prevent smoke spillage in chimney internal cylinder to chimney interlayer completely
In, it can control chimney from further corroding；The ring amine being passed through in chimney can neutralize at chimney internal cylinder corrosion hole
Acidic materials in flue gas prevent corrosion hole from further deteriorating expansion.
In the present embodiment, the observation vent window of chimney outer cylinder is the plastic-steel structure glass material of tolerable 10KPa pressure, institute
It states and is sealed processing with the clay of UV resistant at the installation gap of observation vent window, it is ensured that chimney interlayer pressure is in 10KPa
When observation vent window do not loosen.The observation vent window of plastic-steel structure glass material both can be convenient feelings inside observation chimney
Condition, and can guarantee to observe the intensity of vent window.
In the present embodiment, pressure-measuring instrument is set at the observation vent window at 50m, 100m, 150m and 200m height,
The solar-powered transmission signal of pressure-measuring instrument.The setting of pressure-measuring instrument, convenient in monitoring chimney interlayer
Pressure, to ensure that the pressure energy in chimney interlayer maintains 10KPa.
In the present embodiment, the chimney bottom is provided with the doorframe structure of tolerable 10KPa pressure, the doorframe structure
Inleakage is less than 10 m3/min.2-6 venthole and a sliding door are provided on the doorframe structure, the venthole is used
In connection supply air line, the sliding door is passed in and out for inspection personnel.A length of 50-500mm of the venthole, the venthole
Width be 50-500mm.A height of 1000mm-1500mm of the sliding door, the width of the sliding door are 500mm-1000mm.
Claims (6)
1. a kind of method of power plant sleeve-type chimney control corrosion rate leakage, which is characterized in that with the clay of UV resistant, elasticity
Rubber or plastics as filler, by chimney outer cylinder chimney top, be filled sealing at flue adapter, and to filler
Consolidation process is carried out to ensure that filler does not loosen under the pressure of 10KPa, it is ensured that the tightness of chimney outer cylinder；To chimney
Interlayer provides pressure, the pressure in chimney internal cylinder space when the pressure of chimney interlayer space being made to be greater than flue gas emission, the chimney folder
The pressure difference in sheaf space and chimney internal cylinder space when flue gas emission is greater than 1KPa, the observation vent window of the chimney 50m,
Pressure-measuring instrument, the solar-powered transmission signal of pressure-measuring instrument, institute are set at 100m, 150m and 200m height
The doorframe structure that chimney bottom is provided with tolerable 10KPa pressure is stated, is provided with 2-6 venthole and one on the doorframe structure
A sliding door, the venthole are passed in and out for connecting supply air line, the sliding door for inspection personnel, the length of the venthole
For 50-500mm, the width of the venthole is 50-500 mm；Meanwhile volatile alkaline substance is passed through in interlayer.
2. the method for power plant sleeve-type chimney control corrosion rate leakage according to claim 1, which is characterized in that by logical
The mode for entering compressed air, nitrogen cylinder gas supply or air blower air-supply makes the pressure of chimney interlayer space maintain 10KPa.
3. the method for power plant sleeve-type chimney control corrosion rate leakage according to claim 1, which is characterized in that described to wave
Hair property alkaline matter is ammonia or ring amine.
4. the method for power plant sleeve-type chimney control corrosion rate leakage according to claim 1, which is characterized in that outside chimney
The observation vent window of cylinder is the plastic-steel structure glass material of tolerable 10KPa pressure.
5. the method for power plant sleeve-type chimney control corrosion rate leakage according to claim 1, which is characterized in that the door
The inleakage of mount structure is less than 10 m3/min。
6. the method for power plant sleeve-type chimney control corrosion rate leakage according to claim 1, which is characterized in that described to push away
A height of 1000 mm -1500 mm of sliding door, the width of the sliding door are 500 mm -1000 mm.
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| CN201710893386.7A CN107860014B (en) | 2017-09-28 | 2017-09-28 | A kind of method of power plant sleeve-type chimney control corrosion rate leakage |
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| CN201710893386.7A CN107860014B (en) | 2017-09-28 | 2017-09-28 | A kind of method of power plant sleeve-type chimney control corrosion rate leakage |
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| CN107860014B true CN107860014B (en) | 2019-04-02 |
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