CN102343697B - Anticorrosive and wear-resistant material for spraying zones of desulfurization towers - Google Patents
Anticorrosive and wear-resistant material for spraying zones of desulfurization towers Download PDFInfo
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- CN102343697B CN102343697B CN2011103074978A CN201110307497A CN102343697B CN 102343697 B CN102343697 B CN 102343697B CN 2011103074978 A CN2011103074978 A CN 2011103074978A CN 201110307497 A CN201110307497 A CN 201110307497A CN 102343697 B CN102343697 B CN 102343697B
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- 239000000463 material Substances 0.000 title claims abstract description 53
- 238000006477 desulfuration reaction Methods 0.000 title abstract description 9
- 230000023556 desulfurization Effects 0.000 title abstract description 9
- 238000005507 spraying Methods 0.000 title abstract 3
- 239000002245 particle Substances 0.000 claims abstract description 54
- 239000000919 ceramic Substances 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 37
- 229920001567 vinyl ester resin Polymers 0.000 claims abstract description 34
- 239000011521 glass Substances 0.000 claims abstract description 19
- 239000012779 reinforcing material Substances 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 59
- 239000003082 abrasive agent Substances 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 13
- 230000003009 desulfurizing effect Effects 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 abstract description 17
- 239000003546 flue gas Substances 0.000 abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 12
- 230000007797 corrosion Effects 0.000 abstract description 8
- 239000002253 acid Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000012856 packing Methods 0.000 abstract 5
- 239000003365 glass fiber Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000003487 anti-permeability effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000003260 anti-sepsis Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
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- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses an anticorrosive and wear-resistant material for the spraying zones of desulfurization towers. The material comprises an impermeable material, a reinforcing material and a wear-resistant material, wherein the impermeable material mainly comprises vinyl ester resin added with glass flakes; the reinforcing material mainly comprises vinyl ester resins, glass fiber cloth and glass fiber chopped strand mats; the wear-resistant material mainly comprises vinyl ester resin added with wear-resistant ceramic packing particles; and the wear-resistant ceramic packing particles can be divided into packing I, packing II and packing III mixed in certain proportion. The material disclosed by the invention has the advantages of low difficulty in construction, low cost, good anticorrosive effect, good wear-resistant performance, convenience in application and maintenance, and capability of effectively preventing the damage from an external force and an internal stress and resisting the corrosion of acid liquor or the erosion of flue gas, effectively resolving the problems of erosion, wear and damage of the wear-resistant material easily occurring in spraying zones of desulfurization towers, prolonging the service life of an anticorrosive layer, and greatly reducing the maintenance cost.
Description
Technical field
The present invention relates to the industrial antisepsis Material Field, particularly a kind of anti-corrosion material for desulfurizing tower.
Background technology
Along with national energy-saving, reduce discharging the enforcement of strategic objective, thermal power plant or heating boiler all need to carry out the flue gas desulfurization purification, and smoke processing system in desulphurization system (absorption tower etc.), flue gas carry and exhaust system (flue), chimney all must carry out preservative treatment.Flue gas after desulfurization, although the content of the sulfur dioxide in flue gas greatly reduce,, the method for washing is to removing sulfur trioxide effect a small amount of in flue gas bad.Due to through wet desulphurization, smoke moisture increases, temperature reduces, and flue gas very easily, in the inwall dewfall of chimney, after in flue gas, remaining sulfur trioxide dissolves, forms the very strong dilute sulfuric acid solution of corrosivity.At present, the material for acidproof corrosion has a lot.But, due to a large amount of flow at high speed flue gases being arranged in the desulfurizer running, and with granular solid matter, to anticorrosive coat wash away, wear and tear quite serious; In addition, in service on absorption tower, the gypsum slurries in spray zone is to washing away of some position etc., and conventional anticorrosive coat will be washed attenuate in general several days, and perforation is leaked soon, causes the out of service of desulphurization plant.
In prior art, for the wear-resisting zone of needs, a kind of scheme is that lining pastes the protective layer of acid-proof ceramic tile+binding agent as anti-corrosion material, this scheme exist difficulty of construction greatly, the weak point while taking a lot of work; Another kind of scheme is to utilize APC hybridized polymer+polytetrafluoroethylene (PTFE) to do the anti-corrosion material protective layer; its construction is simpler; but there is the bad defect of serviceability; the APC hybridized polymer has certain antiseptic effect; but wear-resisting poor effect; by polytetrafluoroethylene (PTFE), do protective layer, but, because tetrafluoroethene is difficult sticky, hard-to-weld material, be difficult to fixedly play a protective role.Also having a kind of scheme is to use alloy material, but alloy material is very expensive, also is difficult to secondary operations, is difficult for promoting.
Therefore, for some position of desulfurizer, the existing strong corrosivity in zone, serious erosive wear is arranged again, design that a kind of cost is lower, easy construction, existing good decay resistance, the anti-corrosion material that has again resistance to erosion, abrasion resistance properties is very important.
Summary of the invention
The purpose of this invention is to provide a kind of desulfurizing tower spray district corrosion-proof wear-resistant material, its difficulty of construction is little, with low cost, favorable anti-corrosion effect, anti-wear performance is good, the life-span is long, easy to maintenance, can prevent effectively that external force, internal stress from destroying and resisting acid liquid corrosion or sweep of gases.
In order to reach above purpose, the present invention adopts following technical scheme:
A kind of desulfurizing tower spray district corrosion-proof wear-resistant material is characterized in that: comprise three layers of seepage resistant material, reinforcing material and high-abrasive materials, wherein:
Seepage resistant material mainly adds glass flake by vinyl ester resin and forms;
Reinforcing material mainly consists of vinyl ester resin and glass fabric, glass chopped strand mats;
High-abrasive material mainly adds the wear-resistant ceramic filler particles by vinyl ester resin and forms;
High-abrasive material vinyl ester resin wherein: wear-resistant ceramic filler particles=1:1.8～2.1.
In anti-corrosion material, what play corrosion-resistant effect is mainly resin, and wear-resistant and flushing resistance be arranged, must rely on wherein filler and special formula.According to external pertinent literature and case, wear resistant filler commonly used has: ceramic particle, carborundum, schmigel etc., mainly selected ceramic particle herein.
The match ratio of high-abrasive material is extremely crucial, and the ratio of resin is too high, and its anti-wear performance does not reach the highest; The ratio of resin is too low, and the abrasion resistant particles ratio is too high, and anti-wear performance can increase, but its anti-permeability performance reduces again; In addition, the specification of abrasion resistant particles, size, shape that comprises particle diameter etc. all can affect anti-permeability performance.
As preferably, in high-abrasive material, usage ratio is vinyl ester resin: wear-resistant ceramic filler particles=1:2.
Described wear-resistant ceramic filler particles is divided into filler I, filler II and filler III, and the filler I is 40 purpose ceramic particles, and is spherical in shape; The filler II is 100 purpose ceramic particles, and is spherical in shape; The filler III is 160 purpose ceramic particles, and is spherical in shape;
Filler I: filler II: filler III=15:70:15.
Filler I, filler II and filler III are filled a prescription according to this specification ratio, and the anticorrosion antiwear layer compactness of formation, wearability are better, and grating is effective, can fully resist washing away of the erosion of acid solution and acid solution, acid gas, particle.Impermeability, wearability, fine corrosion resistance, workability are also good.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of desulfurizing tower spray provided by the invention district corrosion-proof wear-resistant material, difficulty of construction is little, with low cost, favorable anti-corrosion effect, anti-wear performance are good, external force, internal stress destruction be can effectively prevent and acid liquid corrosion or sweep of gases resisted, and use and keep in repair also very convenient, can effectively solve the anti-corrosion material that desulfurizing tower spray district is prone to most washes away and wear-out failure, extend anticorrosive coat service life, can reduce to a great extent maintenance cost.
The specific embodiment
Below in conjunction with the specific embodiment, foregoing invention content of the present invention is described in further detail.
But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, make various replacements and change, all should comprise within the scope of the invention.
Comparative Examples:
Desulfurizing tower spray district corrosion-proof wear-resistant material, comprise three layers of seepage resistant material, reinforcing material and high-abrasive materials, wherein:
Seepage resistant material mainly adds glass flake by vinyl ester resin and forms;
Reinforcing material mainly consists of vinyl ester resin and glass fabric, glass chopped strand mats;
High-abrasive material mainly adds the wear-resistant ceramic filler particles by vinyl ester resin and forms;
High-abrasive material, mainly add the wear-resistant ceramic filler particles by vinyl ester resin and form; High-abrasive material vinyl ester resin wherein: wear-resistant ceramic filler particles=1:2.Its filler I: filler II: filler III=1:1:1, the filler I is 40 purpose ceramic particles, and is spherical in shape; The filler II is 100 purpose ceramic particles, and is spherical in shape; The filler III is 160 purpose ceramic particles, and is spherical in shape.
The experiment proved that, desulfurization operation is after 1 year, shutdown inspection, and spray district, absorption tower anticorrosion antiwear layer material is after acid solution, flue gas, particle wash away and corrode 1 year, and corrosion resistance is relatively good, and the contour structures of integral material does not almost change.But wearability and compactness have slight change, and surface has tiny uneven.This explanation ceramic particle size is improper, oarse-grained on the high side, short grained on the low side.
Embodiment 1:
Desulfurizing tower spray district corrosion-proof wear-resistant material, comprise three layers of seepage resistant material, reinforcing material and high-abrasive materials, wherein:
Seepage resistant material mainly adds glass flake by vinyl ester resin and forms;
Reinforcing material mainly consists of vinyl ester resin and glass fabric, glass chopped strand mats;
High-abrasive material mainly adds the wear-resistant ceramic filler particles by vinyl ester resin and forms;
High-abrasive material, mainly add the wear-resistant ceramic filler particles by vinyl ester resin and form; High-abrasive material vinyl ester resin wherein: wear-resistant ceramic filler particles=1:1.8.Its filler I: filler II: filler III=15:70:15, the filler I is 40 purpose ceramic particles, and is spherical in shape; The filler II is 100 purpose ceramic particles, and is spherical in shape; The filler III is 160 purpose ceramic particles, and is spherical in shape.
The experiment proved that, desulfurization operation is after 1 year, shutdown inspection, and spray district, absorption tower anticorrosion antiwear layer material is after acid solution, flue gas, particle wash away and corrode 1 year, and the contour structures of integral material has slight change, and stream pendant phenomenon is arranged; Material thickness is front the same with use.Corrosion resistance, wearability and the compactness excellence of anti-corrosion material are described, the ceramic particle size is suitable, but fluent material (vinyl ester resin) ratio is bigger than normal slightly.
Embodiment 2:
Desulfurizing tower spray district corrosion-proof wear-resistant material, comprise three layers of seepage resistant material, reinforcing material and high-abrasive materials, wherein:
Seepage resistant material mainly adds glass flake by vinyl ester resin and forms;
Reinforcing material mainly consists of vinyl ester resin and glass fabric, glass chopped strand mats;
High-abrasive material mainly adds the wear-resistant ceramic filler particles by vinyl ester resin and forms;
High-abrasive material, mainly add the wear-resistant ceramic filler particles by vinyl ester resin and form; High-abrasive material vinyl ester resin wherein: wear-resistant ceramic filler particles=1:2.Its filler I: filler II: filler III=15:70:15, the filler I is 40 purpose ceramic particles, and is spherical in shape; The filler II is 100 purpose ceramic particles, and is spherical in shape; The filler III is 160 purpose ceramic particles, and is spherical in shape.
The experiment proved that, desulfurization operation is after 2 years, shutdown inspection, spray district, absorption tower anticorrosion antiwear layer material is after acid solution, flue gas, particle wash away and corrode 2 years, the contour structures of integral material does not almost change, material thickness, surface smoothness is basic with use front the same.Corrosion resistance, wearability and the compactness excellence of anti-corrosion material are described, the ceramic particle size is suitable; Fluent material (vinyl ester resin) and solid material (ceramic particle) ratio are suitable.
Embodiment 3:
Desulfurizing tower spray district corrosion-proof wear-resistant material, comprise three layers of seepage resistant material, reinforcing material and high-abrasive materials, wherein:
Seepage resistant material mainly adds glass flake by vinyl ester resin and forms;
Reinforcing material mainly consists of vinyl ester resin and glass fabric, glass chopped strand mats;
High-abrasive material mainly adds the wear-resistant ceramic filler particles by vinyl ester resin and forms;
High-abrasive material, mainly add the wear-resistant ceramic filler particles by vinyl ester resin and form; High-abrasive material vinyl ester resin wherein: wear-resistant ceramic filler particles=1:2.1.Its filler I: filler II: filler III=15:70:15, the filler I is 40 purpose ceramic particles, and is spherical in shape; The filler II is 100 purpose ceramic particles, and is spherical in shape; The filler III is 160 purpose ceramic particles, and is spherical in shape.
The experiment proved that, desulfurization operation is after 2 years, shutdown inspection; spray district, absorption tower anticorrosion antiwear layer material washes away erosion after 2 years through acid solution, flue gas, particle; the contour structures of integral material almost and does not change, and material thickness is substantially front the same with use, but surface ceramic material protrusion phenomenon is obvious.Corrosion resistance, wearability and the compactness excellence of anti-corrosion material are described, the ceramic particle size is suitable, but solid material (ceramic particle) ratio is bigger than normal slightly.
Claims (1)
1. desulfurizing tower spray district corrosion-proof wear-resistant material is characterized in that: comprise three layers of seepage resistant material, reinforcing material and high-abrasive materials, wherein:
Seepage resistant material mainly adds glass flake by vinyl ester resin and forms;
Reinforcing material mainly consists of vinyl ester resin and glass fabric, glass chopped strand mats;
High-abrasive material mainly adds the wear-resistant ceramic filler particles by vinyl ester resin and forms;
Wherein in high-abrasive material, usage ratio is vinyl ester resin: wear-resistant ceramic filler particles=1:1.8～2.1;
?Described wear-resistant ceramic filler particles is divided into filler I, filler II and filler III, and the filler I is 40 purpose ceramic particles, and is spherical in shape; The filler II is 100 purpose ceramic particles, and is spherical in shape; The filler III is 160 purpose ceramic particles, and is spherical in shape;
Filler I: filler II: filler III=15:70:15.
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| CN2011103074978A CN102343697B (en) | 2011-10-12 | 2011-10-12 | Anticorrosive and wear-resistant material for spraying zones of desulfurization towers |
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| CN102343697B true CN102343697B (en) | 2013-11-20 |
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| CN102877682B (en) * | 2012-09-13 | 2014-07-02 | 成都龙之泉科技股份有限公司 | Anticorrosion device of thermal power chimney |
| CN103061252A (en) * | 2012-12-28 | 2013-04-24 | 张庆彬 | Anti-corrosion material for piers of sea-crossing bridge |
| CN103112223B (en) * | 2013-02-28 | 2015-04-08 | 北京中能建源科技开发有限公司 | Chimney protective layer and setting method thereof in chimney |
| CN105499034A (en) * | 2015-12-30 | 2016-04-20 | 山东瑞嘉通风环保科技有限公司 | Internal corrosion resistant treatment process of desulfurization tower |
| CN106947366A (en) * | 2016-03-11 | 2017-07-14 | 魏明烜 | A kind of thermosetting ceramic resin corrosion-proof wear-resistant material |
| CN107224858A (en) * | 2016-03-23 | 2017-10-03 | 上海建冶科技工程股份有限公司 | The wear-and corrosion-resistant technique of wet desulphurization equipment |
| CN106497347A (en) * | 2016-10-28 | 2017-03-15 | 安徽新大陆特种涂料有限责任公司 | A kind of fiber reinforced vinyl base plexiglas flake mortar and preparation method thereof |
| CN106752964B (en) * | 2017-01-24 | 2019-02-26 | 江苏肯创环境科技股份有限公司 | A kind of graphene abrasion resistant fire blocking anti-corrosive powder paint and preparation method thereof |
| CN107213703B (en) * | 2017-08-04 | 2019-08-06 | 山东恒科环保设备有限公司 | Efficient desulfurizing tower |
| CN108863217A (en) * | 2018-07-10 | 2018-11-23 | 合沐佳成都新材料有限公司 | A kind of inorganic porcelain tendre and preparation method thereof |
| CN111085098A (en) * | 2020-01-02 | 2020-05-01 | 神华国能集团有限公司 | Wear-resistant additive material, anti-corrosion material, material preparation method and desulfurization system |
| CN117157152A (en) * | 2021-04-07 | 2023-12-01 | 基伊埃工程技术股份有限公司 | Rotary atomizer |
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| JP3426863B2 (en) * | 1996-08-08 | 2003-07-14 | 三菱重工業株式会社 | Axial fan for flue gas desulfurization equipment |
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