CN110195877A - The inexpensive steel liner chimney anticorrosion lining offset plate and method that service life is 30 years - Google Patents
The inexpensive steel liner chimney anticorrosion lining offset plate and method that service life is 30 years Download PDFInfo
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- CN110195877A CN110195877A CN201910365502.7A CN201910365502A CN110195877A CN 110195877 A CN110195877 A CN 110195877A CN 201910365502 A CN201910365502 A CN 201910365502A CN 110195877 A CN110195877 A CN 110195877A
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- Prior art keywords
- chimney
- offset plate
- corrosion
- service life
- years
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
-
- 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
- F23J13/02—Linings; Jackets; Casings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chimneys And Flues (AREA)
Abstract
It both can solve facing rubber the present invention relates to one kind and steel surface obtain good bonding, ensure enough adhesive strengths, it is suitble to the natural vulcanization technique of line with rubber construction on site again, meet height at 200 meters or more, 10 meters of diameter or more chimney constructions and the condition being safely operated in chimney level-one, the inexpensive steel liner chimney anticorrosion lining offset plate and method that service life is 30 years, wall liner pastes flexible rubber lining in chimney steel shell, it can not only solve current titanium composite panel weld stress to concentrate, anti-corrosion defect caused by the stress corrosion of foam glass brick brickwork joint, and solve the corrosion-resistant of whole glass steel aseptic technic, service life and fire safety hidden danger, and cost is cheap.Because the unique elastomeric property of rubber material and corrosion resistance have the stress for absorbing chimney shaking initiation and corrosive media to two kinds of performances of corrosion of chimney steel shell, anti-corrosion security performance of the chimney in shaking ensure that.
Description
Technical field
It both can solve facing rubber the present invention relates to one kind and steel surface obtain good bonding, it is ensured that enough bondings are strong
Degree, and it is suitble to the natural vulcanization technique of line with rubber construction on site, meet the different industrial chimney requirements for anticorrosion of desulfurization environmental requirement,
Especially height is at 200 meters or more, and 10 meters of diameter or more chimney constructions and under conditions of the safe operation of chimney level-one use the longevity
Inexpensive steel liner chimney anticorrosion lining offset plate and method of the life for 30 years, belong to industrial chimney corrosion protective lining offset plate manufacturing field.
Background technique
Industrial gas emission system is the smoke stack emission by different height mostly into atmosphere, these exhaust gas include
The flue gas or dust generated in coal-burning boiler, oil burning boiler, gas fired-boiler, biomass boiler and industrial production.These exhaust gas
In containing largely to nuisances such as the sulfur dioxide of air environmental pollution, sulfur trioxide, carbon dioxide, nitrogen oxides, chlorides
Matter causes seriously to pollute to atmospheric environment, such as acid rain, haze.Early stage flue gas is in line to atmosphere, this period through chimney
Belonging to dry flue system, the smoke discharging temperature of coal-fired power plant is about between 90~140 DEG C, substantially without moisture in flue gas,
Mordant diluted acid will not be formed, it is not serious to the corrosion of inner wall of stack, inside lining fire resistant anticorrosive brick is mostly used greatly
Anticorrosion technique.With the arrival in desulfurization epoch, radical change is had occurred in the working environment of chimney, and flue gas is after desulfurization, row
Contain a large amount of moisture in flue gas in the flue of cigarette, these moisture can be with residual corrosive media (S, CI, F, N in flue gas
Deng) strong caustic acid is formed, such as: dilute sulfuric acid, hydrochloric acid, hydrofluoric acid diluted acid generate flue inner wall (shell) greatly rotten
Erosion, and corrosion rate is exceedingly fast.This severe corrosive environment is mainly manifested in following aspects:
(1) flue-gas temperature is low, and corrosive medium is strong (forming dilute sulfuric acid after SO2, SO3 condensation)；
(2) when flue-gas temperature < acid dew point, condensation acid solution is trickled downwards along walling of flue, is during which evaporated repeatedly, is trickled, in chimney
Wall is chronically at the saturation soaking state of acid, causes to corrode；
(3) flue internal pressure > external pressure, the inside anti-corrosion lining infiltration of flue gas, aggravation corrosion diffusion；
(4) corrosion rate is fast, and corrosion rate is accumulated with runing time to be risen, and greatly shortens the service life of chimney.
Many cases show that the Anticorrosion of desulfuration chimney has seriously affected unit safety operation, have been desulfurization epoch cigarettes
The trouble of the mind of gas exhaust system corrosion.Thus, for this problem, extensive grind is expanded to inner wall of stack anti-corrosion
Study carefully and is inquired into industrial application.Conclude current desulfuration chimney inner wall anti-corrosive technology and the most popular and most viable technical side of technique
Case is broadly divided into three kinds:
The first: denier lining in titanium composite panel steel, feature are cost height, are widely considered to be a kind of anticorrosion put things right once and for all
Technical solution.But there is corrosion phenomenon after actually applying 3-5.It mainly cannot be completely eliminated and make welding process in chimney
The stress collection of middle titanium composite panel commissure neutralizes stress corrosion, thus weld corrosion is caused to leak.
Second: foam glass brick lining, price is also more expensive, and external is relatively early, is a kind of more traditional to prevent
Etching process technology.But it also causes to leak and corrode because being up to for chimney waves the stress cracking for equally existing brickwork joint.
The third: whole glass steel winds chimney, just starts to apply.The purpose of this technology is primarily to solve above-mentioned two
The existing leakage of kind of technology and corrosion default and develop, but still undesirable, mainly manufacturing environment is seriously polluted, fire prevention peace
Full hidden danger is big, and the safe life of material needs to be investigated (because the ageing properties of glass-reinforced plastic material are not so good as the aging of other anti-corrosion materials
Performance is good, and manufacturing cost is higher in addition.This technology is short using time glue, and the about 2-3 year has had corrosion to seep during this period
Leak phenomenon.
Other schemes are also just like corrosion-inhibiting coating, such as brushing glass flake aseptic technic.All there are different journeys in these schemes
The technological deficiency of degree is not able to satisfy 30 years design requirements corroded safely of flue gas, is not suitable with the tall and big of chimney and (usually highly reaches
200 meters or more) and operation shake design feature.It is very easy to that chimney stress collection is caused to neutralize stress corrosion cause anti-corrosion early stage mistake
Effect.The factor of chimney anticorrosion failure is varied, material, technique and structural etc. is likely to that anti-corrosion is caused to fail.But it is young
Carefully probe into the root of anti-corrosion failure, it is clear that it is not corrosion-resistant and cause to be more than material itself.It should say, above-mentioned aseptic technic is with regard to it
All there is extraordinary anti-corrosion ability for the corrosion resistance for the every kind of material selected itself, this anti-corrosion can be resisted completely
Medium.It however is not preferably, to fail to reach design requirement in practical applications.Its reason is entangled all because of the knot of chimney Gao Er great
Structure feature determines that it will necessarily be shaken in operation, the medium mechanical function of vibration and stress collection causes anti-corrosion to fail.Cause
This, is not difficult to obtain that solving the scientific scheme of chimney anticorrosion failure is both to reduce, absorb and dissolve the destruction of these stress,
To obtain good and lasting anti-corrosion effect.
Summary of the invention
Purpose of design: avoiding the shortcoming in background technique, and designing a kind of both can solve facing rubber and obtain with steel surface
Obtain good bonding, it is ensured that enough adhesive strengths, and it is suitble to the natural vulcanization technique of line with rubber construction on site, meet height and exists
200 meters or more, 10 meters of diameter or more chimney constructions and chimney level-one safe operation condition, service life be 30 years it is low at
This steel liner chimney anticorrosion lining offset plate and method.
Design scheme: the aseptic technic of wall liner patch flexible rubber lining in chimney steel shell can not only solve current
Anti-corrosion defect caused by titanium composite panel weld seam, the stress corrosion in foam glass brick gap and stress are concentrated, and solve entirety
The corrosion-resistant and fire safety hidden danger of Corrosion Protection of Fiber Reinforced Plastics technology, and cost is cheap.Because of unique high-elastic of rubber material
Performance and corrosion resistance have two kinds of corrosion of the stress for absorbing chimney shaking initiation and corrosive media to chimney steel shell
Performance ensure that (compared with the background art, anti-corrosion security performance of the chimney in shaking, manufacturing cost substantially reduce
30% or more is reduced at instinct), service life fully meets chimney design requirement 30 years.In order to realize purpose of design of the invention,
This invention takes following technical schemes:
1) technical solution of high performance anticorrosive rubber lining formula and lining offset plate is filtered out, it may be assumed that
This invention takes following technical schemes: selecting the butyl rubber ageing-resistant, corrosion resistance is fabulous.And it is equipped with efficiently anti-
Aging auxiliary agent, vulcanization accelerator additive, tackifier etc., specific formula is as follows:
Butyl rubber 100
Strengthening helping agent 60
Softening agent 10
Tackifier 50
Vulcanizing agent 4.5
Antioxidant A 2
Anti-aging agent B 1.5
Promotor 1.5
Good bonding is obtained to solve facing rubber and steel surface, it is ensured that enough adhesive strengths.It is had in facing rubber
Increase the material suitably with enough increase adhesive strengths, what is selected in this formula is phenol aldehyde type tackifier, and makes its dosage
Reach 50 parts or more.
2) line with rubber and sulfuration process for adapting to chimney scene anticorrosive construction are had developed, that is, uses and is suitble to line with rubber on site
The natural vulcanization technique of construction.It can implement line with rubber anti-corrosion at the scene, once construction is completed to come into operation, without heating vulcanization
The specific technique of this rubber lining.Because the construction of industrial chimney it is universal remote, it is tall and big (its general height 200 meters with
On, 10 meters of diameter or more), scene can not implement traditional logical steam press cure technique.The operation of chimney is a level security again
It is required that projected life reaches 30 years.Combination by butyl rubber and natural vulcanization binomial technology is guarantee construction safety, and anti-corrosion can
The core technology leaned on.
Compared with the background technology, the present invention, first is that solving current titanium composite panel aseptic technic, foam glass brick anti-corrosion skill
Anti-corrosion defect caused by the stress corrosion of art weld seam and stress are concentrated；Second is that solving the corrosion-resistant of whole glass steel aseptic technic
With fire safety hidden danger；Third is that cost is cheap.
Specific embodiment
Embodiment 1: a kind of low-cost long-life chimney anticorrosion lining offset plate with 30 years service life, it is characterized in that weight
Measure part:
100 parts of butyl rubber
60 parts of strengthening helping agent
10 parts of softening agent
50 parts of tackifier
4.5 parts of vulcanizing agent
2 parts of antioxidant A
1.5 parts of anti-aging agent B
1.5 parts of promotor
It is 229.5 parts total.
The tackifier are phenol aldehyde type tackifier and tret reaches 50 parts or more.
The antioxidant A refers to ketone amines antioxidants；The anti-aging agent B refers to paraphenylenediamine's class anti-aging agent；The promotion
Agent refers to thiazole accelerator；The corrosion protective lining offset plate adapts to chimney scene without heating vulcanization anticorrosive construction.
The corruption lining offset plate acid-resistant corrosion can be in 20% H2SO4Under the conditions of cold cycling 30 times, flawless, bubble, gas
Hole and peeling phenomenon；Heat-proof aging function is under the conditions of 93 DEG C × 168h, flawless, bubble, stomata and peeling phenomenon；Hardness/
Shore A is in 20% H2SO4Under the conditions of cold cycling 30 times, 40~90 degree；With the adhesive strength (KN/m) of steel plate, wherein not invading
Acid moieties >=3.5, pickling part >=2.0.
The corrosion protective lining offset plate is 60% H when test(ing) medium2SO4When, × 28d and 93 DEG C, which is impregnated, × at 23 DEG C impregnates 28d
Under the conditions of, mass change Δ W, % are ± 2 and ± 5 respectively；When test(ing) medium is concentration 150g/L, with HCI adjusting pH value to 4
CaCl2When solution, × impregnating 28d and 93 DEG C × at 23 DEG C, under the conditions of impregnating 28d, mass change Δ W, % are -2~+6 respectively
With -2~+6；When test(ing) medium HCI, which adjusts pH value, arrives deionized water (2), immersion of × impregnating 28d and 93 DEG C × at 23 DEG C
Under the conditions of 28d, mass change Δ W, % are -2~+5 and -2~+10 respectively.
65 ± 5 Shao Er A of corrosion protective lining offset plate hardness, tensile strength >=7 MPa, elongation at break >=250%, it is inner with
The adhesive strength of steel >=5 kN/m, age hardness variation+2 in 70 DEG C × 168 hours are spent, tensile strength decline+2.4%, under elongation
Drop -7.6%, 0.4 mm of Akron abrasion3。
Embodiment 2: on the basis of embodiment 1, a kind of height is at 200 meters or more, 10 meters of diameter or more chimney anticorrosions linings
In offset plate processing method, outside (1) sulphur removal agent, sizing compound formula documented by claim 1 is pressed into certain charging sequence: raw rubber
→ reinforcing agent → tackifier → softening agent → promotor is uniformly mixed in rubber internal mixer, after 24 hours are parked after discharging, so
The film of 8 X 12mm of certain shapes is made in the back mixing in rubber mixing mill of after vulcanization agent；(2) it is squeezed out with Rubber Extruder
The film of 1000mm width, thickness can adjust between 2-4mm according to actual requirement；(3) to wanting corrosion-resistant chimney inner surface
Carry out mechanical derusting；(4) it is cut at chimney anticorrosion scene according to chimney shape setting-out, then lining, which is attached to, has been subjected to mechanical derusting
The inner surface of chimney, after roller compacting, flattening.
It is to be understood that: although above-described embodiment retouches mentality of designing of the invention detailed text of contrasting
It states, but these verbal descriptions, only the simple text of mentality of designing of the present invention is described, rather than to mentality of designing of the present invention
Limitation, any combination, increase or modification without departing from mentality of designing of the present invention falls within the protection scope of the present invention.
Claims (10)
1. the inexpensive steel liner chimney anticorrosion lining offset plate that a kind of service life is 30 years, it is characterized in that parts by weight:
100 parts of butyl rubber
60 parts of strengthening helping agent
10 parts of softening agent
50 parts of tackifier
4.5 parts of vulcanizing agent
2 parts of antioxidant A
1.5 parts of anti-aging agent B
1.5 parts of promotor.
2. the inexpensive steel liner chimney anticorrosion lining offset plate that service life according to claim 1 is 30 years, feature
Be: the tackifier are phenol aldehyde type tackifier and tret reaches 50 parts or more.
3. the inexpensive steel liner chimney anticorrosion lining offset plate that service life according to claim 1 is 30 years, feature
Be: the antioxidant A refers to ketone amines antioxidants.
4. the inexpensive steel liner chimney anticorrosion lining offset plate that service life according to claim 1 is 30 years, feature
Be: the anti-aging agent B refers to paraphenylenediamine's class anti-aging agent.
5. the inexpensive steel liner chimney anticorrosion lining offset plate that service life according to claim 1 is 30 years, feature
Be: the promotor refers to thiazole accelerator.
6. the inexpensive steel liner chimney anticorrosion lining offset plate that service life according to claim 1 is 30 years, feature
Be: the corrosion protective lining offset plate adapts to chimney scene without heating vulcanization anticorrosive construction.
7. the inexpensive steel liner chimney anticorrosion lining offset plate that service life according to claim 1 is 30 years, feature
Be: the corruption lining offset plate acid-resistant corrosion can be in 20% H2SO4Under the conditions of cold cycling 30 times, flawless, bubble, stomata and
Peeling phenomenon；Heat-proof aging function is under the conditions of 93 DEG C × 168h, flawless, bubble, stomata and peeling phenomenon；Hardness/Shore
A is in 20% H2SO4Under the conditions of cold cycling 30 times, 40~90 degree, the adhesive strength (KN/m) with steel plate, wherein not invading acid moieties
>=3.5, pickling part >=2.0.
8. the inexpensive steel liner chimney anticorrosion lining offset plate that service life according to claim 1 is 30 years, feature
Be: the corrosion protective lining offset plate is 60% H when test(ing) medium2SO4When, × 28d and 93 DEG C, which is impregnated, × at 23 DEG C impregnates 28d condition
Under, mass change Δ W% is ± 2 and ± 5 respectively；When test(ing) medium is concentration 150g/L, with HCI adjusting pH value to 4
CaCl2When solution, × impregnating 28d and 93 DEG C × at 23 DEG C, under the conditions of impregnating 28d, mass change Δ W, % are -2~+6 respectively
With -2~+10；When test(ing) medium HCI, which adjusts pH value, arrives deionized water (2), immersion of × impregnating 28d and 93 DEG C × at 23 DEG C
Under the conditions of 28d, mass change Δ W% is -2~+5 and -2~+10 respectively.
9. the inexpensive steel liner chimney anticorrosion lining offset plate that service life according to claim 1 is 30 years, feature
It is: 65 ± 5 Shao Er A of corrosion protective lining offset plate hardness, tensile strength >=7 MPa, elongation at break >=250%, lining and steel
Adhesive strength >=5 kN/m, 70 DEG C × 168 hours+2 degree of age hardness variation, tensile strength decline+2.4%, elongation decline-
7.6%, 0.4 mm of Akron abrasion3。
10. a kind of height is at 200 meters or more, 10 meters of diameter or more chimney anticorrosion facing rubber board processing methods, it is characterized in that:
(1) outside sulphur removal agent, sizing compound formula documented by claim 1 is pressed into certain charging sequence raw rubber → reinforcing agent → increasing
Stick → softening agent → promotor is uniformly mixed in rubber internal mixer, and after 24 hours are parked after discharging, then plus vulcanizing agent exists
The adhesive tape of 8 X 12mm of certain shapes is made in back mixing in rubber mixing mill；
(2) film of 1000mm width is squeezed into Rubber Extruder, thickness can be adjusted between 2-4mm according to actual requirement
It is whole；
(3) to want corrosion-resistant chimney inner surface carry out mechanical derusting；
(4) it is cut at chimney anticorrosion scene according to chimney shape setting-out, then lining is attached to the interior of the chimney for having been subjected to mechanical derusting
Surface, after roller compacting, flattening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365502.7A CN110195877A (en) | 2019-05-01 | 2019-05-01 | The inexpensive steel liner chimney anticorrosion lining offset plate and method that service life is 30 years |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365502.7A CN110195877A (en) | 2019-05-01 | 2019-05-01 | The inexpensive steel liner chimney anticorrosion lining offset plate and method that service life is 30 years |
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| Publication Number | Publication Date |
|---|---|
| CN110195877A true CN110195877A (en) | 2019-09-03 |
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ID=67752330
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910365502.7A Pending CN110195877A (en) | 2019-05-01 | 2019-05-01 | The inexpensive steel liner chimney anticorrosion lining offset plate and method that service life is 30 years |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB189901878A (en) * | 1899-01-26 | 1899-07-08 | Albert Lindel Lawton | Improvements in Methods of and Apparatus for Preserving Fruit, Vegetable, Grain, and the like. |
| CN101891993A (en) * | 2010-07-06 | 2010-11-24 | 重庆大众防腐有限公司 | Fluoropolymer organic lining anticorrosive material for chimney, flue and other pipelines and containers and construction method thereof |
| CN102140191A (en) * | 2011-03-04 | 2011-08-03 | 杭州顺豪橡胶工程有限公司 | High-wear resistance skirt rubber material for reconstruction of conveyer belt on damage site and skirt on-site reconstruction method |
| CN102168859A (en) * | 2010-11-26 | 2011-08-31 | 重庆大众防腐有限公司 | Anticorrosion structure for concrete flue and chimney joint of brick lining chimney and anticorrosion treatment method |
| CN205897175U (en) * | 2016-01-18 | 2017-01-18 | 杭州顺豪橡胶工程有限公司 | Coal fired power plant flue gas desulfurization concrete chimney inner wall anticorrosion structure |
-
2019
- 2019-05-01 CN CN201910365502.7A patent/CN110195877A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB189901878A (en) * | 1899-01-26 | 1899-07-08 | Albert Lindel Lawton | Improvements in Methods of and Apparatus for Preserving Fruit, Vegetable, Grain, and the like. |
| CN101891993A (en) * | 2010-07-06 | 2010-11-24 | 重庆大众防腐有限公司 | Fluoropolymer organic lining anticorrosive material for chimney, flue and other pipelines and containers and construction method thereof |
| CN102168859A (en) * | 2010-11-26 | 2011-08-31 | 重庆大众防腐有限公司 | Anticorrosion structure for concrete flue and chimney joint of brick lining chimney and anticorrosion treatment method |
| CN102140191A (en) * | 2011-03-04 | 2011-08-03 | 杭州顺豪橡胶工程有限公司 | High-wear resistance skirt rubber material for reconstruction of conveyer belt on damage site and skirt on-site reconstruction method |
| CN205897175U (en) * | 2016-01-18 | 2017-01-18 | 杭州顺豪橡胶工程有限公司 | Coal fired power plant flue gas desulfurization concrete chimney inner wall anticorrosion structure |
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