CN204358751U - A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric - Google Patents
A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric Download PDFInfo
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- CN204358751U CN204358751U CN201420817884.5U CN201420817884U CN204358751U CN 204358751 U CN204358751 U CN 204358751U CN 201420817884 U CN201420817884 U CN 201420817884U CN 204358751 U CN204358751 U CN 204358751U
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Abstract
The utility model relates to a kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric, be made up of several woven composite bed arranged in periodic structure, the woven composite bed in each cycle is formed successively by base cloth layer, fibrage and top layer mould, base cloth layer is corrosion resistant polytetrafluoroethylene floor, fibrage is the polyester fiber layer containing polytetrafluoroethylene (PTFE), and top layer film is polyfluortetraethylefilm film coated.Compared with prior art, the utility model efficiently solves chimney seriously corroded, smoke evacuation system safety, stable operation can also be reached simultaneously, PTFE base cloth has good corrosion resistance, effect that Ji Bu also plays in fabric " reinforcing bar ", can improve the brute force of fabric and can reduce initial cost.
Description
Technical field
The utility model relates to coal-fired flue-gas blowdown stack corrosion-resistant field, especially relates to a kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric.
Background technology
Flue gas desulfurization on coal-burning boiler great majority in recent years, and be wet desulphurization more than 90%, current China major part wet desulfurization system does not establish GGH, after wet desulphurization, the water capacity of neat stress increases greatly, the exhaust gas temperature of Wet chimney is generally at about 50-60 DEG C, and in neat stress, the content of water vapour reaches saturation state and relative humidity (RH) is 100% at such a temperature.The dew-point temperature of neat stress is within the scope of 90-120 DEG C, and neat stress temperature is starkly lower than flue gas dew point, and therefore the inwall condensation of Wet chimney is very serious forms a large amount of condensate liquid, generally can shape H in chimney condensate liquid
2sO
3, H
2sO
4deng inorganic acid, pH value is at about 1-2, and sulfuric acid concentration can reach 60%, has very strong corrosivity, thus there is certain etching problem to desulphurization system follow-up equipment chimney.Nonmetallic materials and the large class of metal material two is mainly contained at present for Wet chimney corrosion-resistant material.It is nonmetallic materials that China adopts more at present, comprise Inorganic Non-metallic Materials as anti-corrosion brick, borosilicate glass foamed brick etc. with macromolecular material as glass resin flake etc., its antiseptic effect is undesirable.
Due to chimney be the important equipment requirement of power plant and boiler with running, the same to life-span, adopt more effective fabric Wet chimney anticorrosion with the reliability improving whole system, stability and operational efficiency, therefore exploitation obtains coal-fired flue-gas blowdown stack corrosion-proof lining fabric just becomes technical problem now urgently to be resolved hurrily.
Utility model content
The purpose of this utility model be exactly in order to overcome above-mentioned prior art exist defect and provide a kind of chimney anticorrosion special inner lining fabrics, coal-fired flue-gas blowdown stack seriously corroded is solved to reach, the problem that initial cost is larger, reaches the object reducing investment of equipment, improve the stability of a system simultaneously.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric, is made up of several woven composite bed arranged in periodic structure,
The woven composite bed in each cycle is formed successively by base cloth layer, fibrage and top layer mould,
Described base cloth layer is corrosion resistant polytetrafluoroethylene floor,
Described fibrage is the polyester fiber layer containing polytetrafluoroethylene (PTFE),
Described top layer film is polyfluortetraethylefilm film coated.
Described woven composite bed is formed by the top layer mould, fibrage and the base cloth layer that set gradually from top to bottom are woven, or by the base cloth layer set gradually from top to bottom, fibrage, top layer mould is woven forms.
Described woven composite bed is at least provided with one deck.
Described woven composite bed is provided with layer 2-4, and in woven composite bed, the order that stacks of each layer structure can be identical, also can be contrary.
Polytetrafluoroethylene (PTFE) containing 10-20wt% in described polyester fiber layer.
Woven in described polyester fiber layer have polytetrafluoroethylene (PTFE).
Compared with prior art, the utility model efficiently solves chimney seriously corroded, smoke evacuation system safety, stable operation can also be reached simultaneously, PTFE base cloth has good corrosion resistance, effect that Ji Bu also plays in fabric " reinforcing bar ", can improve the brute force of fabric and can reduce initial cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model in embodiment 1.
In figure, 1-base cloth layer, 2-fibrage, 3-top layer film.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment 1
A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric, its structure as shown in Figure 1, the woven composite bed arranged in periodic structure by two is formed, the woven composite bed in each cycle is by base cloth layer 1, fibrage 2 and top layer mould 3 successively woven formation, in the present embodiment, in the composite bed on upper strata, be followed successively by top layer mould 3, fibrage 2 and base cloth layer 1 from top to bottom, in the composite bed of lower floor, be followed successively by base cloth layer 1, fibrage 2, top layer mould 3 from top to bottom.Wherein, top layer film 3 is polyfluortetraethylefilm film coated, the woven polytetrafluoroethylene (PTFE) having 10wt% in polyester fiber layer.Base cloth layer 1 is corrosion resistant polytetrafluoroethylene floor.
Polyfluortetraethylefilm film coated has very strong corrosion resistance, and the anti-corrosion material rotproofness used than current chimney anticorrosion is good.There is on the basis of polytetrafluoroethylene (PTFE)+polyester fiber layer low cost intensity height and corrosion resistant feature; Tetrafluoroethene base cloth has good corrosion resistance, and effect that Ji Bu also plays in fabric " reinforcing bar ", can improve the brute force of fabric.
Embodiment 2
A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric, the woven composite bed being periodic structure setting by one deck is formed, and woven composite bed is by base cloth layer, fibrage and top layer mould successively woven formation.
Embodiment 3
A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric, the woven composite bed arranged in periodic structure layer by layer by three is formed, and every layer of woven composite bed is by base cloth layer, fibrage and top layer mould woven formation successively from top to bottom.
Embodiment 4
A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric, the woven composite bed arranged in periodic structure layer by layer by three is formed, and every layer of woven composite bed is by top layer mould, fibrage and base cloth layer woven formation successively from top to bottom.
Claims (5)
1. a coal-fired flue-gas blowdown stack corrosion-proof lining fabric, is characterized in that, this inner lining fabrics is made up of several woven composite bed arranged in periodic structure,
The woven composite bed in each cycle is formed successively by base cloth layer, fibrage and top layer mould,
Described base cloth layer is corrosion resistant polytetrafluoroethylene floor,
Described fibrage is the polyester fiber layer containing polytetrafluoroethylene (PTFE),
Described top layer film is polyfluortetraethylefilm film coated.
2. a kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric according to claim 1, it is characterized in that, described woven composite bed is formed by the top layer mould, fibrage and the base cloth layer that set gradually from top to bottom are woven.
3. a kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric according to claim 1, is characterized in that, described woven composite bed by the base cloth layer set gradually from top to bottom, fibrage, top layer mould is woven forms.
4. a kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric according to claim 1, it is characterized in that, described woven composite bed is at least provided with one deck.
5. a kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric according to claim 1, it is characterized in that, described woven composite bed is provided with layer 2-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420817884.5U CN204358751U (en) | 2014-12-22 | 2014-12-22 | A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420817884.5U CN204358751U (en) | 2014-12-22 | 2014-12-22 | A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204358751U true CN204358751U (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420817884.5U Active CN204358751U (en) | 2014-12-22 | 2014-12-22 | A kind of coal-fired flue-gas blowdown stack corrosion-proof lining fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204358751U (en) |
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2014
- 2014-12-22 CN CN201420817884.5U patent/CN204358751U/en active Active
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