CN104372980A - Corrosion-resistant chimney lining structure and corrosion-resistant method for chimney - Google Patents
Corrosion-resistant chimney lining structure and corrosion-resistant method for chimney Download PDFInfo
- Publication number
- CN104372980A CN104372980A CN201410621111.4A CN201410621111A CN104372980A CN 104372980 A CN104372980 A CN 104372980A CN 201410621111 A CN201410621111 A CN 201410621111A CN 104372980 A CN104372980 A CN 104372980A
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- Prior art keywords
- chimney
- corrosion
- resistant
- original
- lining structure
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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
-
- 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
- E04H12/02—Structures made of specified materials
-
- 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
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
Abstract
The invention discloses a corrosion-resistant chimney lining structure and a corrosion-resistant method for a chimney. The chimney is a corrosion-resistant chimney newly built or a single cylinder chimney under construction. The corrosion-resistant chimney lining structure structurally comprises a reinforced concrete cylinder, a heat preserving layer and a glass reinforced plastic inner lining in sequence from outside to inside. The glass reinforced plastic inner lining is of a vitrification foaming brick lining structure, and is made of light vitrification foaming bricks, and the whole glass reinforced plastic inner lining forms an independent smoke exhausting structure. The parts except the inner lining are of bearing structures. A built single cylinder chimney can be improved in a corrosion-resistant mode, the method for separating smoke and an original chimney is adopted, the original chimney is arranged to be of a bearing structure, and a vitrification foaming brick inner lining structure is additionally arranged on the innermost layer of the original chimney. The original chimney and acid liquid are completely separated, the original chimney is not corroded, the bearing burden of the original chimney can be reduced, and the corrosion-resistant chimney lining structure is beneficial for saving labor for construction.
Description
Technical field
The present invention relates to chimney anticorrosion field, particularly relate to a kind of method of etch-proof chimney lining structure and chimney anticorrosion erosion.
Background technology
Current flue gas desulfur device system complex, need corrosion-resistant region area large, anticorrosion inefficacy post-etching speed is fast.After desulfurization, flue-gas temperature is low, and upper draft is little, and flow velocity is slow, and easily produce flue gas and assemble, in fume gas condensation liquid, the content of acid is lower, and low concentration acid solution is stronger than the corrosivity of high concentration acid solution.Also contain chloride and fluoride except containing except sulfuric acid and sulfurous acid in smoke condensate, the existence of these materials will improve corrosivity greatly.For these reasons, corresponding anticorrosion facility or corrosion-resistant coating must be set in chimney.For inner liner, require crack resistence, antiseep, resistance to acid solution.In the prior art, the main types of chimney is single-drum chimney and sleeve or multicylinder stack.Because its structure is different, the anticorrosive measure of single-drum chimney and sleeve or multicylinder stack employing is also just different.Common single-drum chimney liner is generally loam brick, refractory brick or acid resisting brick etc. and adds acid-resisting pouring material or acid resisting mortar and build by laying bricks or stones and form, or forms by acid-resisting pouring material is integrated poured, forms corrosion-resistant coating by acid resisting material.Common single-drum chimney liner is generally loam brick, refractory brick or acid resisting brick etc. and adds acid-resisting pouring material or acid resisting mortar and build by laying bricks or stones and form, or form by acid-resisting pouring material is integrated poured, corrosion-resistant coating is formed by acid resisting material, under wet flue gas condition after desulfurization, the concentration of sulfuric acid generally below 5%, the i.e. saturable acid resistant adhesive mortar corrosion-resistant coating about 2.5 years greatly, thus structural destruction is caused to chimney.Use vitreous foamed brick can improve the corrosion resistance of chimney as the liner of chimney, improve high temperature resistant, antifatigue, the aging-resistant performance of chimney.
The invention provides a kind of cheap, single-drum chimney anti-corrosion structure that anticorrosion ability is good, and a kind of single-drum chimney Anticorrosion Construction method that engineering time is short, the anti-corrosion structure of particularly old single-drum chimney transformation.
Summary of the invention
The object of the invention is the deficiency overcoming the existence of above-mentioned prior art, provides a kind of method of etch-proof chimney lining structure and chimney anticorrosion erosion.Have non-leakage, by force corrosion-resistant, the feature that hot property is good, the temperature difference that the abnormal operating mode that can adapt to completely to discharge fume produces, vitreous foamed brick inner lining structure can not be caused ftracture, the load-bearing burden of original chimney can be alleviated, and be conducive to construction saving man-hour.
The object of the invention is to be achieved through the following technical solutions:
First aspect; the invention provides a kind of method of etch-proof chimney lining structure and chimney anticorrosion erosion; its chimney is newly-built Anti-corrosive chimney or is building single-drum chimney; its structure comprises from outside to inside successively: steel concrete cylindrical shell, insulation layer, frp lining; described frp lining its adopt vitreous foamed brick inner lining structure; material adopts light vitreous foamed brick, and entirety forms independently smoke discharging structure, and except described frp lining, part is only load-carrying members.
Described newly-built Anti-corrosive chimney, its constructure scheme routinely technique is built, and only original for prior art chimney anticorrosion erosion internal layer is replaced to vitreous foamed brick liner.
Second aspect, the present invention also can carry out anticorrosion transformation to built single-drum chimney, and it adopts the method for being separated with original chimney by flue gas, and original chimney is set to load-carrying members, sets up vitreous foamed brick inner lining structure at the innermost layer of original chimney.
Described single-drum chimney, its remodeling method comprises the steps:
(1) first pretreatment is carried out to the inwall of single-drum chimney;
(2) inwall after the pre-treatment sets up vitreous foamed brick inner lining structure, and concrete technology is as follows:
A removes chimney bracket place part liner, bracket part is exposed, so that the segmentation of vitreous foamed brick liner is supported on bracket;
B carries out preservative treatment to bracket place: also exposed completely by light vitreous foamed brick parcel bracket.
Owing to have employed above technical scheme, comparatively prior art is compared, and the present invention has the following advantages:
(1) flue gas and original chimney separate by vitreous foamed brick inner lining structure, and original chimney is only load-carrying members, and no longer with smoke contacts, flue gas only contacts with vitreous foamed brick inner lining structure.Because vitreous foamed brick has non-leakage, by force corrosion-resistant, therefore by original chimney and acid solution completely isolated, original chimney can not be corroded;
(2) vitreous foamed brick material itself is by force corrosion-resistant, also can not be fallen by acid liquid corrosion within several years more than ten years, and therefore it does not need frequent shutdowns to change anticorrosive;
(3) because vitreous foamed brick composite material hot property is good, the temperature difference that the abnormal operating mode that can adapt to completely to discharge fume produces, can not cause vitreous foamed brick inner lining structure to ftracture;
(4) due to vitreous foamed brick high-strength light and designability good, as frp lining structure smoke evacuation inner core use time, the load-bearing burden of original chimney can be alleviated, and be conducive to construction save man-hour.
Accompanying drawing explanation
Fig. 1 is that the present invention newly makes Anti-corrosive chimney schematic diagram.
Fig. 2 is structural representation after the transformation of old chimney.
Wherein, Fig. 1: 1-steel concrete cylindrical shell, 2-insulation layer, 3-frp lining.
Fig. 2: 4-original chimney, 5-vitreous foamed brick inner lining structure.
Detailed description of the invention
Below in conjunction with specific embodiment and Figure of description, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make certain adjustments and improvements.These all belong to protection scope of the present invention.
Embodiment 1:
First aspect; the invention provides a kind of method of etch-proof chimney lining structure and chimney anticorrosion erosion; its chimney is newly-built Anti-corrosive chimney or is building single-drum chimney; its structure comprises from outside to inside successively: steel concrete cylindrical shell 1, insulation layer 2, frp lining 3; described frp lining 3 its adopt vitreous foamed brick inner lining structure; material adopts light vitreous foamed brick, and entirety forms independently smoke discharging structure, and except described frp lining 3, part is only load-carrying members.
Described newly-built Anti-corrosive chimney, its constructure scheme routinely technique is built, and only original for prior art chimney anticorrosion erosion internal layer is replaced to vitreous foamed brick liner.
For newly-built Anti-corrosive chimney, the innermost layer of chimney uses vitreous foamed brick inner lining structure, and form independently smoke discharging structure, except described liner, part is only load-carrying members.Material mainly a kind of light vitreous foamed brick of vitreous foamed brick inner lining structure.
Above technology does not change build process, so its construction is simple; Newly-built chimney, after coal-burning power plant runs 1 year, has no obvious evidence of corrosion and crack.Chimney of the present invention is after increase vitreous foamed brick liner, and anticorrosion ability improves greatly, and its anticorrosion ability is that person of ordinary skill in the field is difficult to expect.
Embodiment 2:
The present invention also can carry out anticorrosion transformation to built single-drum chimney, and it adopts the method for being separated with original chimney 4 by flue gas, and original chimney 4 is set to load-carrying members, sets up vitreous foamed brick inner lining structure 5 at the innermost layer of original chimney 4.
Described single-drum chimney, its remodeling method comprises the steps:
(1) first pretreatment is carried out to the inwall of single-drum chimney;
(2) inwall after the pre-treatment sets up vitreous foamed brick inner lining structure, and concrete technology is as follows:
A removes chimney bracket place part liner, bracket part is exposed, so that the segmentation of vitreous foamed brick liner is supported on bracket;
B carries out preservative treatment to bracket place: also exposed completely by light vitreous foamed brick parcel bracket.
The method comprises separates flue gas and original chimney 4, and original chimney 4 is only load-carrying members, sets up vitreous foamed brick inner lining structure 5 at the innermost layer of original chimney 4.
Claims (3)
1. the method for an etch-proof chimney lining structure and chimney anticorrosion erosion; it is characterized in that: its chimney is newly-built Anti-corrosive chimney or is building single-drum chimney; its structure comprises from outside to inside successively: steel concrete cylindrical shell, insulation layer, frp lining; described frp lining its adopt vitreous foamed brick inner lining structure; material adopts light vitreous foamed brick; entirety forms independently smoke discharging structure, and except described vitreous foamed brick liner, part is only load-carrying members.
2. the method for a kind of etch-proof chimney lining structure as claimed in claim 1 and chimney anticorrosion erosion; it is characterized in that: the present invention also can carry out anticorrosion transformation to built single-drum chimney; it adopts the method for being separated with original chimney by flue gas; original chimney is set to load-carrying members, sets up vitreous foamed brick inner lining structure at the innermost layer of original chimney.
3. the method for a kind of etch-proof chimney lining structure as claimed in claim 2 and chimney anticorrosion erosion, it is characterized in that: described single-drum chimney, its remodeling method comprises the steps:
(1) first pretreatment is carried out to the inwall of single-drum chimney;
(2) inwall after the pre-treatment sets up vitreous foamed brick inner lining structure, and concrete technology is as follows:
A removes chimney bracket place part liner, bracket part is exposed, so that the segmentation of vitreous foamed brick liner is supported on bracket;
B carries out preservative treatment to bracket place: also exposed completely by light vitreous foamed brick parcel bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410621111.4A CN104372980A (en) | 2014-11-07 | 2014-11-07 | Corrosion-resistant chimney lining structure and corrosion-resistant method for chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410621111.4A CN104372980A (en) | 2014-11-07 | 2014-11-07 | Corrosion-resistant chimney lining structure and corrosion-resistant method for chimney |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104372980A true CN104372980A (en) | 2015-02-25 |
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|---|---|---|---|
| CN201410621111.4A Pending CN104372980A (en) | 2014-11-07 | 2014-11-07 | Corrosion-resistant chimney lining structure and corrosion-resistant method for chimney |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465808A (en) * | 2016-01-13 | 2016-04-06 | 北京恺岚一方科技发展有限公司 | Corrosion control system for reinforced concrete single-cylinder chimney after wet desulfurization and manufacturing method of corrosion control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3367075A (en) * | 1966-06-24 | 1968-02-06 | Pennsalt Chemical Corp | Corrosion-proof liner for chimney outer wall |
| CN102269417A (en) * | 2011-08-09 | 2011-12-07 | 张蕊 | Anticorrosive chimney and anticorrosive method for chimney |
-
2014
- 2014-11-07 CN CN201410621111.4A patent/CN104372980A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3367075A (en) * | 1966-06-24 | 1968-02-06 | Pennsalt Chemical Corp | Corrosion-proof liner for chimney outer wall |
| CN102269417A (en) * | 2011-08-09 | 2011-12-07 | 张蕊 | Anticorrosive chimney and anticorrosive method for chimney |
Non-Patent Citations (2)
| Title |
|---|
| 邢克勇: "关于单筒式烟囱湿法脱硫改造的思考", 《武汉大学学报（工学版）》 * |
| 陈镜伊: "轻质玻化陶瓷砖复合防腐方案在单筒钢筋混凝土脱硫烟囱改造工程中的应用", 《电力建设》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465808A (en) * | 2016-01-13 | 2016-04-06 | 北京恺岚一方科技发展有限公司 | Corrosion control system for reinforced concrete single-cylinder chimney after wet desulfurization and manufacturing method of corrosion control system |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Wenyuan Inventor after: Hu Xiaohuan Inventor before: Li Qilong Inventor before: Zhu Wenyuan Inventor before: Kong Hui |
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| CB03 | Change of inventor or designer information | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150225 |
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| WD01 | Invention patent application deemed withdrawn after publication |