CN109028119A - A kind of anti-corrosion chimney and its construction method of installation - Google Patents
A kind of anti-corrosion chimney and its construction method of installation Download PDFInfo
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- CN109028119A CN109028119A CN201810879768.9A CN201810879768A CN109028119A CN 109028119 A CN109028119 A CN 109028119A CN 201810879768 A CN201810879768 A CN 201810879768A CN 109028119 A CN109028119 A CN 109028119A
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- chimney
- reinforced plastic
- glass reinforced
- inner cylinder
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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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Chimneys And Flues (AREA)
Abstract
A kind of anti-corrosion chimney and its construction method of installation, in the above chimney internal cylinder part of 26.5m absolute altitude, setting installation glass reinforced plastic inner cylinder installs import ceramics vitrified brick or brushing import glue additional in the following inner steel cylinder of chimney of 26.5m absolute altitude and horizontal flue.Construction method of installation are as follows: remove the steel inner cylinder that anti-corrosion function has been lost in original chimney and corrosion-proof lining layer, mending chimney appurtenances defect, then inside concrete chimney, on dust stratification platform, in conjunction with former chimney and adjunct structure, in suitable absolute altitude, carrying platform is set, a piece self-supporting glass reinforced plastic inner cylinder is installed, is reserved with certain interval with chimney outer wall after installation, is convenient to current check chimney operating condition.The present invention has the adaptability of powerful corrosion resistance and various soda acids, climate change；Construction period is short, and cost of investment is low.
Description
Technical field
Industrial and mining enterprises' infrastructure of the present invention field, more particularly, to a kind of anti-corrosion chimney and its construction method of installation.
Background technique
Currently, industrial and mining enterprises use Limestone-gypsum Wet Flue Gas Desulfurization Process technique with desulfurizer, flue gas is wet after wet desulphurization
Degree increases, temperature reduces, and easily condenses in the inner wall of chimney, in flue gas after the dissolution of remaining sulfur trioxide, forms corrosivity very
Strong dilute sulfuric acid solution.Therefore desulfurization fume is generally viewed as "high" chemical attack medium, belongs to strong corrosive flue gas grade.Flue gas
In other than containing SO2, SO3 and its corresponding dilute sulfuric acid, dilute sulfurous acid, be also situated between containing deep-etchings such as a certain number of HF, HCL
Matter, the presence of fluoride or chloride further improves the degree of corrosion in smoke condensate.It is washed away in operation by flue gas
And the variation of temperature, it causes individual glass blocks to fall off, gap increasing between crackle or glass block, steel inner cylinder is caused locally to be corroded
And leakage phenomenon occurs.
Currently, there are mainly four types of chimney anticorrosion erosion schemes:
1) it installs glass reinforced plastic inner cylinder scheme additional: removing the glass brick lining and steel inner cylinder for having lost anti-corrosion function, add inside chimney
Fill a glass reinforced plastic inner cylinder.Glass reinforced plastic is with its easy-to-use machine-shaping, the advantages such as corrosion resistance is strong, the light intensity of density is big in petrochemical industry
Industry is widely applied.The disadvantage is that needing unit in charge of construction and the technical staff of profession, manufacture, the installation of glass reinforced plastic are carried out special
Industryization construction.High temperature resistance is not so good as titanium plate, cannot operate above for a long time in glass transforming temperature (about 121 DEG C or more).
Frictional resistance is small, needs to consider in design the collection and discharge of acid rain.
2) it pastes import foamed glass brick scheme: removing glass brick lining, steel inner cylinder surface defect is repaired, in whole steel
The inner surface of cylinder pastes import foamed glass brick (Bin Gaode foamed glass brick).Advantage is that domestic implementation engineering achievement is more, is applied
The work period is short, and product producer is more, and price is low, and the domestic personnel for being engaged in the technical solution and unit in charge of construction are more, and threshold is lower.It lacks
Point is that domestic foamed glass brick field man is more, and the good and bad jumbled together, and the product of inferior quality is more, and being easy to happen to adulterate influences construction quality；
To in work progress glue and brick joint process require high, be easy to happen that quality is out of control, and the country has occurred and that a lot of cigarettes in construction
The case of the latter just leakage that puts into operation is transformed in chimney.
3) steel inner cylinder adds fiber-reinforced polymer corrosion-proof lining scheme: the glass brick lining for having lost anti-corrosion function is removed,
There is the fiber-reinforced polymer erosion resistant coating of enough heatproofs, Corrosion Protection, steel in steel inner cylinder inner surface integral spray 2.0mm
Inner cylinder outer surface is kept the temperature.Advantage is integral seamless gap, and corrosion resistant performance is good, easy for construction, and toolability is good, with titanium plate and Bin Gao
Moral glass block compares, at low cost, short construction period.The disadvantage is that high-low temperature resistant circulation impact performance is poor, wear-resisting property is low, construction
Technology controlling and process can be followed with inspection without standard, and there are certain contingency, high-altitude quality control on construction is difficult.
4) titanium steel composite board inner cylinder scheme: removing the glass block and steel inner cylinder for having lost anti-corrosion function, creates self-supporting titanium
Steel composite board inner cylinder, wherein titanium layer thickness is not less than 1.2mm, and steel inner cylinder outer surface is kept the temperature.Advantage is that titanium plate has centainly
Anti-corrosion ability, the titanium film of installation after funnel inner wall can be subjected to acidic flue gas effect for a long time, and to unit operating condition and cigarette
Gas temperature change is insensitive.The disadvantage is that the technology difficulty of construction is very big, and high altitude operation is needed, is easy to appear some welding and asks
Topic, during installing lifting, titanium layer may be faced with scratch, collision-deformed risk, these defects will give the safety of chimney
Operation brings hidden danger.The titanium plate weld seam of one chimney is up to tens kilometers, inevitably there is flaw or omission in work progress, makes
At corrosion failure from now on.The process requirement is to the safety and quality strict control, long construction period, and material in work progress
Expect that cost is high.
Summary of the invention
The purpose of the present invention is overcoming the defect of technology existing for existing anti-corrosion chimney, in reference glass reinforced plastic inner cylinder scheme
On the basis of, the anti-corrosion chimney and its construction method of installation of a kind of unique structure are provided.
Technical solution of the present invention is accomplished in that
A kind of anti-corrosion chimney and its construction method of installation, in the above chimney internal cylinder part of 26.5m absolute altitude, setting installation glass reinforced plastic
Inner cylinder, glass reinforced plastic inner cylinder sectional making, every section of 5-7m, every section of successively lifting splicing, connector is hand paste process；In 26.5m absolute altitude
Following inner steel cylinder of chimney and horizontal flue install import ceramics vitrified brick or brushing import glue additional, form telescopic glass reinforced plastic inner cylinder
Structure.Construction method of installation are as follows: remove the steel inner cylinder that anti-corrosion function has been lost in original chimney and corrosion-proof lining layer, mending chimney
Appurtenances defect, then inside concrete chimney, on dust stratification platform, in conjunction with former chimney and adjunct structure, suitable
Carrying platform is arranged in absolute altitude, installs a self-supporting glass reinforced plastic inner cylinder, can be pre-formed on ground, is then being lifted into inside
Assembling forms one, is reserved with certain interval with chimney outer wall after installation, is convenient to current check chimney operating condition.?
26.5m is with up to 210m absolute altitude glass reinforced plastic inner cylinder wall thickness, using scheme (30-12 ㎜) is thinned step by step, lower part is thick, and top is thin, to subtract
Light load-bearing burden, assembles, it can be ensured that stability at tower structure.
It using glass fabric and vinyl ester resin, is pasted and is operated by hand, sealed between modular glass steel arc plate
Connection gap form a glass reinforced plastic inner cylinder corrosion-resistant, being fully sealed thus inside existing concrete chimney.
To solve the problems, such as chimney rain, acid rain collection and discharge tube are installed in chimney.
To prevent high temperature from catching fire, high temp glass scale anticorrosion is used in chimney gas approach high-temperature region；Pacify in Flue duct design
Fill fire-fighting spraying water system；Increase the high running protection measure of flue-gas temperature.
The present invention has following remarkable result:
1, the above chimney of 26.5m absolute altitude corrodes more serious part, can improve unit property safe and reliable to operation using glass-reinforced plastic material,
It solves the problems, such as the corrosion leakage of inner steel cylinder of chimney, installs the glass reinforced plastic inner cylinder anti-corrosion safe operating life in respect of 30 years or more in advance additional,
Thoroughly solve the problems, such as that chimney lining leaks after may insure chimney transformation.Glass-reinforced plastic material has light weight, intensity height, resistance toization
Learn burn into insulated heat, resistance to TRANSIENT HIGH TEMPERATURE ablation, the advantages that intensity and shape designability are strong.It is de- to be particularly suitable for coal-burning power plant
The Wet chimney service condition of GGH is not added in sulphur.
2, glass reinforced plastic smoke exhaust barrel sectional making, every section of 5-7m, every section of successively lifting splicing, connector is hand paste process, can be with
It is pre-formed on ground, then one is formed being lifted into assembled inside；With powerful corrosion resistance and various soda acids, gas
Wait the adaptability of variation；Construction period is short, and cost of investment is low, longer compared with the products service life such as titanium alloy steel inner cylinder.
3, import ceramics vitrified brick or import glue, import bottom are used with lower stack and horizontal flue anti-corrosion in 26.5m absolute altitude
Apply technology.When guaranteeing anticorrosion ability, material cost and construction cost are low, economical and practical.
Detailed description of the invention
Fig. 1 is installation schematic diagram of the invention.
In figure: 1- hoisting platform, 2- suspender, 3- fiber glass reinforced plastic chimney section, 4- mixed mud outer tube wall, the dedicated steel hoop of 5-, 6-
Dedicated steel hoop support connected unit, 7- glass reinforced plastic inner cylinder, 8-26.5 meters of elevation lines, 9- ceramics vitrified brick sleeve, 10- flue gas enter
Mouthful, 11- lifting appliance.
Specific embodiment
A specific embodiment of the invention is as follows:
A kind of anti-corrosion chimney and its construction method of installation, in the above chimney internal cylinder part of 26.5m absolute altitude, setting installation glass reinforced plastic
Inner cylinder 7, glass reinforced plastic inner cylinder sectional making, every section of 5-7m, every section of successively lifting splicing, connector is hand paste process；In 26.5m absolute altitude
Following inner steel cylinder of chimney and horizontal flue install import ceramics vitrified brick additional, form ceramics vitrified brick sleeve 9；It can also brushing import glue
Instead of forming telescopic glass reinforced plastic inner cylinder structure.
Specific installation process is as follows:
1. removing the steel inner cylinder and corrosion-proof lining layer for having lost anti-corrosion function, mending chimney appurtenances defect, then in coagulation
Inside native chimney, on dust stratification platform, glass reinforced plastic inner cylinder is installed, to form telescopic glass reinforced plastic inner cylinder structure.The glass reinforced plastic
Fig. 1 is shown in the installation of inner cylinder 7 and concrete outer tube wall 4 and ceramics vitrified brick sleeve 9.
2. removing existing steel inner cylinder and corrosion-proof lining:
1) the existing steel inner cylinder and corrosion-proof lining for having lost anti-corrosion function are removed；
2) dust stratification platform is removed, and the steel platform of suspension glass reinforced plastic inner cylinder is set in chimney top；
3. repairing, reinforcing existing concrete chimney inner surface and attached steel construction and attachment；
4. the dedicated steel hoop for installing fixed glass reinforced plastic inner cylinder supports connecting platform 6 inside concrete chimney；
5. the draft design of fiber glass reinforced plastic chimney:
1) 2 months before chimney starts anticorrosion transformation, according to location wind load, snow load and earthquake load, according to chimney
Specific structure size carries out the draft design of glass reinforced plastic inner cylinder；
2) content of draft design includes: the wall thickness of glass reinforced plastic inner cylinder each section, the size of steel hoop and installation site, glass reinforced plastic
Inner tube installation mode and only rolling, supporting way etc..
6. the processing and fabricating of glass reinforced plastic inner cylinder:
1) interim processing workshop as the case may be, is set up.The workshop need to have incubation and thermal insulation function and internal relative humidity tune
Save function；
2) in workshop, according to the requirement of design drawing, modular glass steel stack section；
3) production finishes, through examining qualified fiber glass reinforced plastic chimney section, puts and carries out natural curing on place smooth near the scene；
4) the fiber glass reinforced plastic chimney section for partially needing to carry out secondary operation, near fiber glass reinforced plastic chimney processing workshop, according to drawing
It is required that carrying out secondary operation；
5) according to foregoing routine, processing and fabricating and the natural curing of fiber glass reinforced plastic chimney section are gradually carried out, until completion of processing is whole
Component；
6) while carrying out the processing of foregoing glass steel stack section, the requirement according to design drawing is also needed, carries out fiber glass reinforced plastic chimney
The work such as production, the anti-corrosion of support steel structure needed for installing；
7) production of fiber glass reinforced plastic chimney section and secondary operation, fiber glass reinforced plastic chimney the support production and anti-corrosion of steel construction, it is necessary
Steel construction is removed, is carried out before the completion of steel structure support part repairing construction inside concrete chimney, can satisfy lifting progress and wants
It asks.
7. the installation of concrete chimney lifting facility suitable for reading:
1) suitable for reading in concrete chimney, set up glass reinforced plastic inner cylinder hoisting platform 1；
2) in the suitable position in chimney two sides, excavation foundation pours the earth anchor of lifting facility, one of them is for installing volume
Machine is raised, another is used to install the lifting appliance 11 of glass reinforced plastic inner cylinder；
3) it, by chimney hanging apparatus suitable for reading, is then arrived since hoist engine using the wirerope with enough bearing capacitys
Glass reinforced plastic inner cylinder up to the chimney other end lifts starting point, is fixed on earth anchor.
8. the installation of fiber glass reinforced plastic chimney:
1) good operational procedure is installed successively by lowest part, secondary bottom glass steel stack section by Special-purpose hanger according to schedule
It is standby, it is suitable for reading from concrete chimney, it is sent into concrete chimney, section alignment up and down is then carried out by special hoisting equipment；
2) connection of fiber glass reinforced plastic chimney: by dedicated steel hoop 5, adjacent 2 section fiber glass reinforced plastic chimney section is connected；
3) after reaching bearing strength to previous fiber glass reinforced plastic chimney section connector, it is sent into next section fiber glass reinforced plastic chimney section immediately, into
The linked operation of row fiber glass reinforced plastic chimney section；
4) in the position of design, glass reinforced plastic inner cylinder is installed and only shakes device；
5) it is repeated in the operation of aforementioned four steps, is finished until all connecting bed rearrangement fiber glass reinforced plastic chimney, then cigarette is installed
The auxiliary equipments such as chimney rainhat suitable for reading；
6) installation glass reinforced plastic inner cylinder and flue connecting portion；
7) ambient temperature situations are regarded, natural curing 7~14 days, then can be come into operation.
Claims (3)
1. a kind of anti-corrosion chimney, which is characterized in that in the above chimney internal cylinder part of 26.5m absolute altitude, setting installation glass reinforced plastic
Cylinder, glass reinforced plastic inner cylinder sectional making, every section of 5-7m, every section of successively lifting splicing, connector is hand paste process；26.5m absolute altitude with
Lower stack steel inner cylinder and horizontal flue install import ceramics vitrified brick or brushing import glue additional, form telescopic glass reinforced plastic inner cylinder knot
Structure.
2. anti-corrosion chimney as described in claim 1, it is characterised in that: in 26.5m up to 210m absolute altitude glass reinforced plastic inner cylinder
Wall thickness uses from 30-12 ㎜ and scheme is thinned step by step, and lower part is thick, and top is thin, assembles at tower structure.
3. a kind of construction method of installation of anti-corrosion chimney, which is characterized in that the installation process is as follows: 1) removing
Lose the steel inner cylinder and corrosion-proof lining layer of anti-corrosion function, mending chimney appurtenances defect, then inside concrete chimney, product
On grey platform, glass reinforced plastic inner cylinder is installed, to form telescopic glass reinforced plastic inner cylinder structure；
2) existing steel inner cylinder and corrosion-proof lining are removed:
(1) the existing steel inner cylinder and corrosion-proof lining for having lost anti-corrosion function are removed；
(2) dust stratification platform is removed, and the steel platform of suspension glass reinforced plastic inner cylinder is set in chimney top；
3) it repairs, reinforce existing concrete chimney inner surface and attached steel construction and attachment；
4) in concrete chimney interior design height, installation Steel Supporting Platform is to meeting new requirement；
5) draft design of fiber glass reinforced plastic chimney:
(1) 2 months before chimney starts anticorrosion transformation, according to location wind load, snow load and earthquake load, according to chimney
Specific structure size carries out the draft design of glass reinforced plastic inner cylinder；
(2) content of draft design includes: the wall thickness of glass reinforced plastic inner cylinder each section, the size of steel hoop and installation site, glass
Steel inner cylinder mounting means and only rolling, supporting way；
6) processing and fabricating of glass reinforced plastic inner cylinder:
(1) as the case may be, interim processing workshop is set up, which need to have incubation and thermal insulation function and internal relative humidity tune
Save function；
(2) in workshop, according to the requirement of design drawing, modular glass steel stack section；
(3) production finishes, is examined qualified fiber glass reinforced plastic chimney section, puts progress nature on place smooth near the scene and supports
Shield；
(4) the fiber glass reinforced plastic chimney section for partially needing to carry out secondary operation, near fiber glass reinforced plastic chimney processing workshop, according to drawing
It is required that carrying out secondary operation；
(5) according to foregoing routine, processing and fabricating and the natural curing of fiber glass reinforced plastic chimney section are gradually carried out, until completion of processing is whole
Component；
(6) while carrying out the processing of foregoing glass steel stack section, the requirement according to design drawing is also needed, carries out fiber glass reinforced plastic chimney
The work such as production, the anti-corrosion of support steel structure needed for installing；
(7) production of fiber glass reinforced plastic chimney section and secondary operation, fiber glass reinforced plastic chimney the support production and anti-corrosion of steel construction, it is necessary
Steel construction is removed, is carried out before the completion of steel structure support part repairing construction inside concrete chimney, can satisfy lifting progress and wants
It asks；
7) installation of concrete chimney lifting facility suitable for reading:
(1) near concrete chimney is suitable for reading, the top lifting facility for glass reinforced plastic inner cylinder installation is set up；
(2) in the suitable position in chimney two sides, excavation foundation pours the earth anchor of lifting facility, one of them is for installing
Hoist engine, another is used to install the lifting point fixed equipment of glass reinforced plastic inner cylinder；
(3) using the wirerope with enough bearing capacitys, since hoist engine, by chimney hanging apparatus suitable for reading, then
The glass reinforced plastic inner cylinder for reaching the chimney other end lifts starting point, is fixed on earth anchor；
8) installation of fiber glass reinforced plastic chimney:
(1) good operational procedure is installed successively by lowest part, secondary bottom glass steel stack section by Special-purpose hanger according to schedule
It is standby, it is suitable for reading from concrete chimney, it is sent into concrete chimney, section alignment up and down is then carried out by special hoisting equipment；
(2) connection of fiber glass reinforced plastic chimney: by dedicated steel hoop, adjacent 2 section fiber glass reinforced plastic chimney section is connected；
(3) after reaching bearing strength to previous fiber glass reinforced plastic chimney section connector, it is sent into next section fiber glass reinforced plastic chimney section immediately, into
The linked operation of row fiber glass reinforced plastic chimney section；
(4) in the position of design, glass reinforced plastic inner cylinder is installed and only shakes device；
(5) it is repeated in the operation of aforementioned four steps, is finished until all connecting bed rearrangement fiber glass reinforced plastic chimney, then cigarette is installed
The auxiliary equipments such as chimney rainhat suitable for reading；
(6) installation glass reinforced plastic inner cylinder and flue connecting portion；
(7) ambient temperature situations are regarded, natural curing 7~14 days, then can be come into operation.
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| CN201810879768.9A CN109028119A (en) | 2018-08-03 | 2018-08-03 | A kind of anti-corrosion chimney and its construction method of installation |
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| CN201810879768.9A CN109028119A (en) | 2018-08-03 | 2018-08-03 | A kind of anti-corrosion chimney and its construction method of installation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631065A (en) * | 2018-12-27 | 2019-04-16 | 上海辰鸣电力工程有限公司 | A kind of flue duct retrofit method and its anticorrosion structure |
| CN110159057A (en) * | 2019-05-24 | 2019-08-23 | 中国二十二冶集团有限公司 | Technological transformation workshop chimney construction method of installation |
| CN110206376A (en) * | 2019-06-10 | 2019-09-06 | 江苏新大高空工程有限公司 | Chimney transformation inner cylinder hanging apparatus and working method |
| CN114234219A (en) * | 2021-12-22 | 2022-03-25 | 希斯芮烟囱科技(连云港)有限公司 | Method for manufacturing brick steel composite assembled chimney steel inner cylinder |
| CN114482679A (en) * | 2022-01-17 | 2022-05-13 | 中国能源建设集团广东省电力设计研究院有限公司 | Reinforced concrete chimney with self-supporting inner cylinder and construction method thereof |
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| CN114234219A (en) * | 2021-12-22 | 2022-03-25 | 希斯芮烟囱科技(连云港)有限公司 | Method for manufacturing brick steel composite assembled chimney steel inner cylinder |
| CN114482679A (en) * | 2022-01-17 | 2022-05-13 | 中国能源建设集团广东省电力设计研究院有限公司 | Reinforced concrete chimney with self-supporting inner cylinder and construction method thereof |
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Application publication date: 20181218 |
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