CN104003685B - A kind of low-temp desulfurization chimney lining anti-corrosion method and acidproof jetting material - Google Patents

A kind of low-temp desulfurization chimney lining anti-corrosion method and acidproof jetting material Download PDF

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Publication number
CN104003685B
CN104003685B CN201410193204.1A CN201410193204A CN104003685B CN 104003685 B CN104003685 B CN 104003685B CN 201410193204 A CN201410193204 A CN 201410193204A CN 104003685 B CN104003685 B CN 104003685B
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powder
acidproof
chimney
jetting material
electromagnetism
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CN104003685A (en
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霍利强
章荣会
皮艳灵
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Beijing Associating Rong Great Building Materials Co Ltd
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Beijing Associating Rong Great Building Materials Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chimneys And Flues (AREA)

Abstract

A kind of low-temp desulfurization chimney lining anti-corrosion method and acidproof jetting material, belong to chimney lining technical field of anticorrosion.Acidproof jetting material is made up of the electromagnetism aggregate that gives up, glass-cermic powder, nanometer grade silica micro mist, modification sodium silicate, ethylene glycol, furane resin, powder: liquid=10:3 ~ 10:2, and powder and liquid separately store; Sintering metal composite bolt, titanium silk and plug-in antiseptic wire netting form one-piece construction, chimney sleeve lining organo-silicone rubber resin carries out sealing treatment, adopt during the construction technology of wet injection and add a small amount of furane resin, furane resin are evenly distributed on particle surface, in jetting material solidification process, organic resin migrates to surface, the fine and close acidproof impervious film of one deck is formed on hardenite surface again with after certain density dilute sulphuric acid acidifying, stop the acid solution such as dilute sulphuric acid, dilute hydrochloric acid to be infiltrated in jetting material, and then form overall composite chimney inside lining anti-corrosive working lining; This combined anti-corrosion layer improves the globality of chimney, and the effect of the alternating thermal stress produced under withstanding moisture gradient, flue gas pressures effect, when adding desulfurization fault, compensate for the shortcoming of current each protective system.

Description

A kind of low-temp desulfurization chimney lining anti-corrosion method and acidproof jetting material
Technical field
The present invention relates to a kind of low-temp desulfurization chimney lining anti-corrosion method and acidproof jetting material, belong to chimney lining technical field of anticorrosion.
Background technology
Current domestic flue gas desulfurization more than 90% adopts wet desulfurizing process, and great majority do not have heat exchanger (GGH) equipment.Flue-gas temperature after wet desulphurization is between 40-50 DEG C, although SO 2be removed more than 90%, but SO 3sweetening effectiveness is very low, is no more than 20%.When 40-50 DEG C, SO 3, the gas such as HCL, HF below its dew-point temperature, form H 2sO 4, HCL, HF, HNO 3etc. corrodibility acid solution; Under moisture gradient and flue gas pressures dual function, the acid of formation has very strong perviousness and corrodibility, affects the weather resistance of chimney structure.During this external desulfurizer fault, flue-gas temperature is generally at 120-170 DEG C, and the alternating thermal stress that this alternation of wetting and drying and high and low temperature alternative produce is the important factor that chimney anticorrosion lost efficacy.
Current desulfuration chimney inside lining anti-corrosive scheme mainly adopts structure formations such as pasting foam vitrified tile, glass reinforced plastic, titanium steel plate; The aspect such as wear resistance, thermostability, impermeability because of domestic foam vitrified tile can not meet the environment for use of current chimney complexity; Glass reinforced plastic passes through certain technological forming by glass fibre and resin, in use procedure, temperature can not exceed the softening temperature using resin, if desulfurization is more than 30 minutes fault-time, with regard to needing, cooling process is carried out to the gas entering chimney, destroying to avoid glass fibre reinforced plastic structure; Titanium steel plate liner does structure by steel plate, and titanium plate does preservative coat, and the two can not directly melting welding, and the melting welding of titanium layer is by the element pollution such as oxygen, hydrogen nitrogen, carbon in environment, and the risk existed in installation process is also the anticorrosion hidden danger of chimney lining always.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of low-temp desulfurization chimney lining anti-corrosion method.
A kind of low-temp desulfurization chimney lining anti-corrosion method, containing following steps;
Mix step, acidproof jetting material, is made up of useless electromagnetism aggregate, glass-cermic powder, nanometer grade silica micro mist, modification sodium silicate, ethylene glycol, furane resin, powder: liquid=10:3 ~ 10:2,
Concrete proportion scale is as follows:
Powder component (in weight proportion):
Liquid ingredient (in weight proportion):
Modification sodium silicate 70 ~ 94;
Hexylene glycol 4 ~ 20;
Furane resin 2 ~ 10;
Before spray, powder and liquid separately store;
Sintering metal composite bolt, titanium silk and plug-in antiseptic wire netting form one-piece construction, and chimney sleeve lining organo-silicone rubber resin carries out sealing treatment, forms overall composite chimney inside lining anti-corrosive working lining;
A small amount of furane resin are added time shaping, furane resin are evenly distributed on particle surface, in jetting material solidification process, organic resin migrates to surface, form the fine and close acidproof impervious film of one deck with after certain density dilute sulphuric acid acidifying on hardenite surface again, stop the acid solution such as dilute sulphuric acid, dilute hydrochloric acid to infiltrate in jetting material;
Adopt the technique of wet injection, acidproof jetting material of constructing.
A kind of acidproof jetting material, be made up of powder and liquid, powder and liquid comprise useless electromagnetism aggregate, glass-cermic powder, nanometer grade silica micro mist, modification sodium silicate, ethylene glycol, furane resin respectively, powder: liquid=10:3 ~ 10:2, and concrete proportion scale is as follows:
Powder component (in weight proportion):
Liquid ingredient (in weight proportion):
Modification sodium silicate 70 ~ 94;
Hexylene glycol 4 ~ 20;
Furane resin 2 ~ 10.
Advantage of the present invention:
Utilize wet injection technique, in conjunction with sintering metal composite bolt, titanium silk with compensate for the destruction of various STRESS VARIATION to chimney lining material in current chimney lining protective system through the overall composite anti-corrosive scheme that antiseptic wire netting is formed and cause the weakness of anticorrosion inefficacy.
Make use of renewable resource to give up electromagnetism, and improve wear resistance and the acid resistance of jetting material.
Nanometer grade silica micro mist is utilized to improve intensity and the compactness of jetting material.
Utilization adds furane resin and the impermeability of spray is improved.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: a kind of acidproof jetting material, be made up of powder and liquid, powder and liquid comprise useless electromagnetism aggregate, glass-cermic powder, nanometer grade silica micro mist, modification sodium silicate, ethylene glycol, furane resin respectively, powder: liquid=10:3 ~ 10:2, and concrete proportion scale is as follows:
Powder component (in weight proportion):
Liquid ingredient (in weight proportion):
A kind of acidproof, wear-resisting, impervious jetting material, sintering metal composite bolt, titanium silk and plug-in antiseptic wire netting form one-piece construction, and chimney sleeve lining organo-silicone rubber resin carries out sealing treatment, forms overall composite chimney inside lining anti-corrosive working lining.Its object is intended to solve low temperature acid corrosion-resistant, difference variation causes the anticorrosion Problem of Failure of chimney lining.
A kind of acidproof, wear-resisting, impervious jetting material in the present invention is the useless electromagnetism utilizing compact structure, water-intake rate very little, makes that several particles does aggregate, this kind of electromagnetism aggregate is the high technology ceramics that high temperature burns till, main chemical compositions AL through fragmentation 2o 320 ~ 40%, SiO 240% ~ 70%, there is fabulous thermostability and acid resistance, make waste material re-use simultaneously.
The present invention also utilizes nanometer grade silica to improve the polymerization degree of modified water glass cured article, and the product after making it solidify is finer and close, improves its intensity and impermeability.
The present invention adds a small amount of furane resin when utilizing shaping, furane resin are evenly distributed on particle surface, in jetting material solidification process, organic resin migrates to surface, form the fine and close acidproof impervious film of one deck with after certain density dilute sulphuric acid acidifying on hardenite surface again, stop the acid solution such as dilute sulphuric acid, dilute hydrochloric acid to be infiltrated in jetting material.
The present invention utilizes the construction technology jetting material of wet injection, and the structure of spray body is finer and close, the bolt hole defect that when spray technique eliminates casting and constructing, formwork supporting plate bolt used causes, and reduces the risk that chimney anticorrosion lost efficacy.
The present invention also utilizes the structure of metal bolts and ceramic bolt compound, prevents metal bolts protection against corrosion, the more main muscle of bonding titanium mesh-like, through antiseptic wire, is combined into corrosion resistant metal construction, improves the integrally-built security of chimney anticorrosion.
Embodiment 2: a kind of low-temp desulfurization chimney lining anti-corrosion method, containing following steps;
Mix step, acidproof jetting material, be made up of useless electromagnetism aggregate, glass-cermic powder, nanometer grade silica micro mist, modification sodium silicate, ethylene glycol, furane resin, the two ratio is: powder: liquid=10:3 ~ 10:2,
Concrete proportion scale is as follows:
Powder component (in weight proportion):
Liquid ingredient (in weight proportion):
Modification sodium silicate 94;
Hexylene glycol 4;
Furane resin 2;
Before spray, powder and liquid separately store;
Sintering metal composite bolt, titanium silk and plug-in antiseptic wire netting form one-piece construction, and chimney sleeve lining organo-silicone rubber resin carries out sealing treatment, forms overall composite chimney inside lining anti-corrosive working lining;
A small amount of furane resin are added time shaping, furane resin are evenly distributed on particle surface, in jetting material solidification process, organic resin migrates to surface, form the fine and close acidproof impervious film of one deck with after certain density dilute sulphuric acid acidifying on hardenite surface again, stop the acid solution such as dilute sulphuric acid, dilute hydrochloric acid to infiltrate in jetting material;
Adopt the construction technology jetting material of wet injection.
Embodiment 3: a kind of low-temp desulfurization chimney lining anti-corrosion method, containing following steps;
Mix step, acidproof jetting material is made up of the electromagnetism aggregate that gives up, glass-cermic powder, nanometer grade silica micro mist, modification sodium silicate, ethylene glycol, furane resin, and the two ratio is: powder: liquid=10:3 ~ 10:2,
Concrete proportion scale is as follows:
Powder component (in weight proportion):
Liquid ingredient (in weight proportion):
Modification sodium silicate 70;
Hexylene glycol 20;
Furane resin 10;
Before spray, powder and liquid separately store;
Sintering metal composite bolt, titanium silk and plug-in antiseptic wire netting form one-piece construction, and chimney sleeve lining organo-silicone rubber resin carries out sealing treatment, forms overall composite chimney inside lining anti-corrosive working lining;
A small amount of furane resin are added time shaping, furane resin are evenly distributed on particle surface, in jetting material solidification process, organic resin migrates to surface, form the fine and close acidproof impervious film of one deck with after certain density dilute sulphuric acid acidifying on hardenite surface again, stop the acid solution such as dilute sulphuric acid, dilute hydrochloric acid to infiltrate in jetting material;
Adopt the construction technology jetting material of wet injection.
Embodiment 4: a kind of low-temp desulfurization chimney lining anti-corrosion method, containing following steps;
Mix step, acidproof jetting material is made up of the electromagnetism aggregate that gives up, glass-cermic powder, nanometer grade silica micro mist, modification sodium silicate, ethylene glycol, furane resin, and the two ratio is: powder: liquid=10:3 ~ 10:2,
Concrete proportion scale is as follows:
Powder component (in weight proportion):
Liquid ingredient (in weight proportion):
Modification sodium silicate 84;
Hexylene glycol 1;
Furane resin 5;
Before spray, powder and liquid separately store;
Sintering metal composite bolt, titanium silk and plug-in antiseptic wire netting form one-piece construction, and chimney sleeve lining organo-silicone rubber resin carries out sealing treatment, forms overall composite chimney inside lining anti-corrosive working lining;
A small amount of furane resin are added time shaping, furane resin are evenly distributed on particle surface, in jetting material solidification process, organic resin migrates to surface, form the fine and close acidproof impervious film of one deck with after certain density dilute sulphuric acid acidifying on hardenite surface again, stop the acid solution such as dilute sulphuric acid, dilute hydrochloric acid to infiltrate in jetting material;
Adopt the construction technology jetting material of wet injection.
The main chemical compositions of useless electromagnetism aggregate and powder: AL 2o 320 ~ 40%, SiO 240% ~ 70%.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.

Claims (2)

1. an acidproof jetting material, it is characterized in that being made up of powder and liquid, comprise useless electromagnetism aggregate, glass-cermic powder, nanometer grade silica micro mist, modification sodium silicate, ethylene glycol, furane resin, Fen Ti ﹕ liquid=10 ﹕ 3 ~ 10 ﹕ 2, concrete proportion scale is as follows:
Powder component is in weight proportion:
Useless electromagnetism aggregate 40 ~ 60;
Useless electromagnetism powder 0 ~ 15;
Glass-cermic powder 20 ~ 35;
Nanometer titanium dioxide silicon powder 2 ~ 20;
Solidifying agent 3 ~ 8;
Wetting dispersing agent 0.05 ~ 0.2;
Defoamer 0.05 ~ 0.3;
Liquid ingredient is in weight proportion:
Modification sodium silicate 70 ~ 94;
Ethylene glycol 4 ~ 20;
Furane resin 2 ~ 10;
Described electromagnetism is the high technology ceramics that high temperature burns till, and main chemical compositions is AI 2o 320 ~ 40%, SiO 240% ~ 70%.
2. the acidproof jetting material of one according to claim 1, is characterized in that proportion scale is as follows:
Powder component is in weight proportion:
Useless electromagnetism aggregate 50;
Useless electromagnetism powder 10;
Glass-cermic powder 23;
Nanometer titanium dioxide silicon powder 12;
Solidifying agent 5;
Wetting dispersing agent 0.1;
Defoamer 0.2;
Liquid ingredient is in weight proportion:
Modification sodium silicate 82;
Ethylene glycol 12;
Furane resin 6.
CN201410193204.1A 2014-05-08 2014-05-08 A kind of low-temp desulfurization chimney lining anti-corrosion method and acidproof jetting material Active CN104003685B (en)

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Publication number Priority date Publication date Assignee Title
CN107244931A (en) * 2017-05-31 2017-10-13 长兴华悦耐火材料厂 A kind of cement kiln lining self-bonding wet type gunning refractory
CN110231060A (en) * 2018-03-26 2019-09-13 蔚来汽车有限公司 The measuring device and method of small space moist gradient

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565551A (en) * 1978-11-02 1980-05-17 Gen Signal Corp Film composition
JPS6022973A (en) * 1983-07-19 1985-02-05 Mitsubishi Heavy Ind Ltd Lining material
CN101367637A (en) * 2007-08-13 2009-02-18 江西铜业集团公司 Method of preparing composite material
CN102898775A (en) * 2012-08-28 2013-01-30 石家庄世易糠醛糠醇有限公司 Preparation method for furan resin material for corrosion resistance and high temperature resistance chimney
CN102979351A (en) * 2012-12-03 2013-03-20 刘桂荣 Method for corrosion resistance of rigid and flexible type composite integral casting material inner lining of wet chimney of thermal power plant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5565551A (en) * 1978-11-02 1980-05-17 Gen Signal Corp Film composition
JPS6022973A (en) * 1983-07-19 1985-02-05 Mitsubishi Heavy Ind Ltd Lining material
CN101367637A (en) * 2007-08-13 2009-02-18 江西铜业集团公司 Method of preparing composite material
CN102898775A (en) * 2012-08-28 2013-01-30 石家庄世易糠醛糠醇有限公司 Preparation method for furan resin material for corrosion resistance and high temperature resistance chimney
CN102979351A (en) * 2012-12-03 2013-03-20 刘桂荣 Method for corrosion resistance of rigid and flexible type composite integral casting material inner lining of wet chimney of thermal power plant

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Inventor after: Huo Liqiang

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