CN104061579A - Titanium alloy chimney - Google Patents
Titanium alloy chimney Download PDFInfo
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- CN104061579A CN104061579A CN201310084629.4A CN201310084629A CN104061579A CN 104061579 A CN104061579 A CN 104061579A CN 201310084629 A CN201310084629 A CN 201310084629A CN 104061579 A CN104061579 A CN 104061579A
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- chimney
- titanium alloy
- titanium sheet
- titanium
- resistance
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Abstract
A titanium alloy chimney is applicable to various fields of power generation, chemical metallurgy, cement kilns, heat supply and the like and resists highly corrosive flue gases after desulfurization and denitrification, the titanium alloy thickness is designed to be 2 mm, inclined edge cutting and grinding are performed on a titanium sheet and the titanium sheet is welded with ordinary carbon steel with splicing and welding technologies, the characteristics of a titanium alloy can be guaranteed, the cost can be reduced, various sizes can be designed and produced as required, and the chimney has the higher economic benefit; through a series of bending tests, shearing tests and tensile tests, the chimney is high in quality, good in shock resistance and durability, unlimited in operation temperature, small in diameter, low in exhaust resistance, simple in production process, safe in working system, excellent in quality control, minimum in maintenance cost and great in social benefit. A specific implementation method comprises the steps as follows: inclined edge cutting and grinding are performed on the titanium sheet and the titanium sheet is welded with the carbon steel with the splicing technology.
Description
Affiliated technical field:
The present invention relates to after the denitration of boiler smoke desulfurization such as all kinds of generatings, chemical industry metallurgical, cement kiln, heat supply; the flue gas that contains ammonium hydrogen sulfate and dilute sulfuric acid liquid enters flue or chimney; under low temperature condition, (60-80 degree Celsius) can effectively resist its very strong corrosivity; and wear-resistant; thereby extend the service life of flue or chimney; reduce maintenance cost, reduce the new material of shutting down risk.
Background technology:
In recent years, haze, airborne dust weather are frequently attacked, and meet with bad weather impact, and air quality obviously declines.Its major pollutants are sulfur dioxide, oxynitrides etc., and country has put into effect the control index of strict nitrogen oxide, force the coal-fired enterprise desulphurization denitrations such as power plant, chemical industry metallurgical.
After denitration desulfurization, the hydrogen sulfate ammonia that the reaction of ammonia and sulfur trioxide generates has very strong corrosivity, is the goo of " nasal mucus " shape in the environment of 180～200 DEG C of temperature, very easily adheres to the dust adherent corrosion in flue gas, and SO in coal fuel
2and SO
3generate dilute sulfuric acid with the water and steam in flue gas, have very strong corrosivity, the flue gas that contains dilute sulfuric acid liquid can be dirty along flue or chimney wall.
Current known pipeline is that reinforcing bar and concrete are made, there is the gas of severe corrosive and liquid runs down flue or chimney wall downward, by flue surface and then to structure permeating corrosion, until be seeped into outer wall, penetrant structure body completely, make concrete become opaque, loose, corrosion of the reinforcing steel leaks, rotten fracture, makes flue or chimney well damage, and long-time rear power plant is forced to stop production, keeps in repair, causes a large amount of losses, serious meeting causes chimney to collapse, and consequence is very serious.
Because having, intensity is high, corrosion resistance good, heat resistance high is widely used in every field for titanium alloy.Compared with general titanium alloy, the great advantage of titanium aluminide is high-temperature behavior good (maximum operation (service) temperature is respectively 816 and 982 DEG C), oxidation resistance is strong, creep-resistant property good and lightweight (density only for nickel base superalloy 1/2), make chimney with it, can overcome flue gas and the liquid of deep-etching after denitration desulfurization completely, current domestic use be titanium plate, but cost is very expensive, so that a lot of enterprise abandons using titanium alloy as chimney.
Summary of the invention
The technical problem solving: titanium alloy chimney has great acidproof resistance to corrosion, quality is hard, is anti-corrosion property gas after denitrating flue gas desulfurization, the extraordinary a kind of material of liquid, and the problem facing is at present that anti-corrosive properties and inexpensive property can not possess simultaneously.Titanium alloy chimney provided by the invention can reduce production costs reaching height corrosion-resistant simultaneously, has height feasibility and applicability.
The technical solution adopted for the present invention to solve the technical problems is: be 2 millimeters by the Thickness Design of titanium alloy, adopt splicing and solder technology, carrying out titanium sheet hypotenuse cuts to touch with ordinary carbon steel and welds together, can ensure the characteristic of titanium alloy, can reduce costs again, be the fine selection of denitration desulfurization duct.
Advantage and beneficial effect that compared to the prior art the present invention had are: high anti-corrosive properties, cheap construction cost, easily welding procedure, duration is short, adhesive force is good, can design as required production various sizes, there is larger economic benefit, this product is through a series of crooked test, shearing test, extension test, high-quality ensures, good shock resistance, durability, unlimited operating temperature, diameter is little and exhaust resistance is little, simple production process, the work system of safety, quality control is good, minimum maintenance cost, there is great social benefit.
Brief description of the drawings
Below in conjunction with drawings and Examples, the technology of the present invention is further illustrated.
Fig. 1 is the picture of titanium alloy chimney of the present invention.
Fig. 2 is picture bending in titanium alloy chimney fabrication schedule of the present invention.
Fig. 3 is that titanium alloy chimney of the present invention is fixed and spliced map.
Detailed description of the invention
The present invention adopts splicing process, and hypotenuse cuts titanium sheet, welds together with carbon steel, and the mechanical test carrying out has: crooked test, shearing test, extension test, and concrete work progress divides the following steps:
1, carbon steel sheet cutting;
2, titanium sheet being carried out to hypotenuse cuts;
3, splicing is fixing;
4, seam weldering titanium sheet and steel plate;
5, inspection.
Claims (3)
1. a chimney, be applicable to after the denitration of boiler smoke desulfurization such as all kinds of generatings, chemical industry metallurgical, cement kiln, heat supply, contain the severe corrosive flue gas such as ammonium hydrogen sulfate and dilute sulfuric acid liquid and enter chimney, it is characterized in that: use titanium alloy material, low cost fabrication chimney, effectively resists the severe corrosive of flue gas.
2. chimney according to claim 1, it is characterized in that: intensity is high, corrosion resistance good, heat resistance is high, can design as required production various sizes, there is good shock resistance, durability, unlimited operating temperature, diameter is little and exhaust resistance is little, simple production process, duration are short.
3. chimney according to claim 1, is characterized in that: adopt splicing, hypotenuse cuts titanium sheet (thickness 2mm), welds together with carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310084629.4A CN104061579A (en) | 2013-03-18 | 2013-03-18 | Titanium alloy chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310084629.4A CN104061579A (en) | 2013-03-18 | 2013-03-18 | Titanium alloy chimney |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104061579A true CN104061579A (en) | 2014-09-24 |
Family
ID=51549423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310084629.4A Pending CN104061579A (en) | 2013-03-18 | 2013-03-18 | Titanium alloy chimney |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104061579A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736303A (en) * | 2017-01-22 | 2017-05-31 | 山东宏济堂制药集团济南阿胶制品有限公司 | A kind of donkey-hide gelatin boils the production technology with golden pot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201487975U (en) * | 2009-07-28 | 2010-05-26 | 陈宏亮 | Novel anticorrosive structure of titanium alloy chimney |
| CN201593795U (en) * | 2009-11-20 | 2010-09-29 | 马伸 | Sealed lining antiseptic structure of wet chimney |
| US20110136423A1 (en) * | 2009-12-04 | 2011-06-09 | Qun Xia | Large Diameter FRP Flues In Large Diameter Chimneys |
| CN102661075A (en) * | 2012-05-24 | 2012-09-12 | 上海德昊化工有限公司 | Sectional chimney with single-barrel concrete structure and method for manufacturing sectional chimney |
-
2013
- 2013-03-18 CN CN201310084629.4A patent/CN104061579A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201487975U (en) * | 2009-07-28 | 2010-05-26 | 陈宏亮 | Novel anticorrosive structure of titanium alloy chimney |
| CN201593795U (en) * | 2009-11-20 | 2010-09-29 | 马伸 | Sealed lining antiseptic structure of wet chimney |
| US20110136423A1 (en) * | 2009-12-04 | 2011-06-09 | Qun Xia | Large Diameter FRP Flues In Large Diameter Chimneys |
| CN102661075A (en) * | 2012-05-24 | 2012-09-12 | 上海德昊化工有限公司 | Sectional chimney with single-barrel concrete structure and method for manufacturing sectional chimney |
Non-Patent Citations (2)
| Title |
|---|
| 张爽: "镍基及钛合金在湿法脱硫钢烟囱防腐中的应用", 《电力建设》, vol. 26, no. 9, 30 September 2005 (2005-09-30), pages 62 - 64 * |
| 邓同喜: "钛-钢复合板焊接问题浅析", 《金属加工》, no. 6, 30 March 2008 (2008-03-30), pages 59 - 60 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106736303A (en) * | 2017-01-22 | 2017-05-31 | 山东宏济堂制药集团济南阿胶制品有限公司 | A kind of donkey-hide gelatin boils the production technology with golden pot |
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| DD01 | Delivery of document by public notice |
Addressee: Beijing Sino-South Asia & Pacific Environment Science Technology Co., Ltd. Document name: Deemed not to require novelty, wide term notice |
|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Sino-South Asia & Pacific Environment Science Technology Co., Ltd. Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention |
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| DD01 | Delivery of document by public notice |
Addressee: Beijing Sino-South Asia & Pacific Environment Science Technology Co., Ltd. Document name: the First Notification of an Office Action |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Sino-South Asia & Pacific Environment Science Technology Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140924 |