CN105110806A - Thermal radiation coating for heating furnace - Google Patents
Thermal radiation coating for heating furnace Download PDFInfo
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- CN105110806A CN105110806A CN201510610909.3A CN201510610909A CN105110806A CN 105110806 A CN105110806 A CN 105110806A CN 201510610909 A CN201510610909 A CN 201510610909A CN 105110806 A CN105110806 A CN 105110806A
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Paints Or Removers (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a thermal radiation coating for a heating furnace. The thermal radiation coating comprises the following components by weight percent: 6%-75% of a base material and an additive, 5%-29% of an adhesive, 0.5%-3% of a plasticizer and the balance of a solvent, wherein the base material and the additive are selected from five or all of zinc aluminium spinel powder, manganese aluminum spinel powder, ilmenite powder, boron carbide, ferric oxide and desilicated zirconia powder; the adhesive comprises liquid aluminium dihydrogen phosphate and liquid magnesium dihydrogen phosphate. The coating has the following advantages: the working temperature range is large, the coating can be used at the temperature of over 1400 DEG C, and the highest using temperature can reach nearly 2000 DEG C; the coating is applicable to various substrates, and the adhesive force to the substrates is strong; the coating is applicable to acid and alkali multiple atmospheres, good in long-term durability and strong in anti-thermal shock bearing capacity; the thermal efficiency of energy utilization is improved, the temperature of the substrates covered by the coating is decreased, and the coating is good in abrasion and corrosion resistance, has little influence on the environment, and is convenient to use.
Description
Technical field
The present invention relates to a kind of process furnace coating, more precisely, relate to a kind of high emissivity coating that can improve furnace thermal efficiency, can be applicable to the process furnace of oil, chemical industry, metallurgy industry.
Background technology
Process furnace coating is applied in a lot of industry; it can be used in the heat absorbent surface of various industrial furnace as refractory materials; utilize coating to the principle of thermal-radiating high-absorbility and high emissivity; improve High Temperature Furnaces Heating Apparatus kiln lining body to the absorption of furnace flame heat; improve the heat exchange conditions of burner hearth, body of heater is dispelled the heat and declines, add the thermo-efficiency of energy utilization; to burner hearth substrate material, there is good provide protection simultaneously, extend stove work-ing life, reduce maintenance workload.In addition, by strengthening Radiative heat transfer in furnace, the homogeneity of temperature field in furnace and the heating quality of heated object can also be improved.
Process furnace coating is made up of high temperature resistant base-material, high emissivity additive and tackiness agent usually.Normally used high temperature resistant base-material has zirconium white, zirconium silicate, aluminum oxide, pure aluminium silicate, silicon-dioxide etc.High emissivity additive is most typical is transition metal oxide, such as, and chromic oxide (Cr
2o
3), cobalt oxide (CoOx), ferric oxide (Fe
2o
3) and nickel oxide (NiO).In some coating, high temperature resistant base-material and high emissivity additive are same material.
Following factor should be considered: under high temperature, there is metastable high emissivity during the design of process furnace coating; Suitable particle size; With the thermal expansion matching of matrix, mechanical bond, chemical binding; The hot properties of coating, erosion resistance and wear resistance; There are good sticking power and rheological under normal temperature, are easy to construction; Finally also have the cost of coating, if the cost of coating is far away higher than the energy recovery of plan, so this coating is without any economic implications.
Have developed the process furnace coating of multiple formulations and purposes at present both at home and abroad.But when application of paints is to higher temperature, or when carrying out work for a long time under multicomponent atmosphere, the performance of coating can be subject to great impact, coating efficiencies declines and even lost efficacy.
Summary of the invention
The object of this invention is to provide one in temperature more than 1400 DEG C, to work under multicomponent atmosphere for a long time, be easy to construct (spray gun can be used to spray), economical and practical high-emissivity ceramic paint.This coating can be applicable to oil, chemical industry, metallurgical furnace kiln, and can improve the thermo-efficiency of stove.
Following technical scheme is adopted: a kind of process furnace coating, is characterized in that: comprise base-material, additive, tackiness agent, softening agent and solvent for realizing object of the present invention, wherein:
Described base-material and additive be selected from gahnite powder, manganese-aluminium spinelle powder, ilmenite powder, norbide, ferric oxide, five kinds of desiliconization zirconium powder or all;
Described tackiness agent is made up of liquid phosphoric acid aluminum dihydrogen, liquid phosphoric acid dihydro magnesium.
Preferably, described softening agent is selected from yellow starch gum and/or carboxymethyl cellulose.
Preferably, described solvent be selected from silicon sol, water one or both.
Preferably, the weight percent of described base-material and additive is 5%-78%, and the weight percent of tackiness agent is 5%-30%, and the weight percent of softening agent is 0.5%-3%, and surplus is solvent.
Preferably, described high emissivity additive is nano material.
Coating of the present invention contains gahnite powder, makes the emittance not only improving coating, and coating can use for a long time in acid-basicity atmosphere.Additive of the present invention is nano material, and specific surface area is large, and the ability absorbing various photon is strong, further increases the emittance of coating.Coating of the present invention is made by Powdered base-material and additive, softening agent, liquid adhesive and solvent, when low temperature brushing or spray to stove matrix on or on metallic conduit, by using after 100 DEG C of dryings, construct simple and convenient.Coating of the present invention can use at the temperature more than 1400 DEG C, and maximum operation (service) temperature can reach nearly 2000 DEG C.In addition, high-emissivity ceramic paint of the present invention is applicable to various matrix, to the strong adhesion of matrix, be applicable to soda acid multicomponent atmosphere, long-term durability is good, heat shock resistance ability to bear is strong, improve energy utilization thermo-efficiency, reduce substrate temperature, wear-resisting and good corrosion resistance, little to environmental influence, easy to use.
Embodiment
For the technique effect easy to understand making technical problem to be solved by this invention, the technical scheme taked, obtain, existing the present invention is further illustrated in conjunction with the embodiments.
Embodiment 1 gahnite powder 20%, manganese-aluminium spinelle powder 15%, ilmenite powder 10%, norbide 5%, ferric oxide 3%, desiliconization zirconium powder 2%, tackiness agent 25%, yellow starch gum 0.5%, all the other are solvent, and fully mixing can obtain coating of the present invention.
Embodiment 2
Gahnite powder 30%, manganese-aluminium spinelle powder 5%, ilmenite powder 10%, norbide 5%, ferric oxide 3%, desiliconization zirconium powder 2%, tackiness agent 25%, yellow starch gum 0.5%, all the other are solvent, and fully mixing can obtain coating of the present invention.
Embodiment 3
Gahnite powder 25%, manganese-aluminium spinelle powder 10%, ilmenite powder 10%, norbide 5%, ferric oxide 3%, desiliconization zirconium powder 2%, tackiness agent 25%, yellow starch gum 0.5%, all the other are solvent, and fully mixing can obtain coating of the present invention.
Abrasion loss is tested:
Get the sample that the various embodiments described above obtain respectively, on spray refractory standard sample, and be heated to 1400 DEG C of sintering, and get control sample respectively and do not carry out spray treatment. adopt normal temperature wear resistant instrument to detect.After tested, the weighted average loss after the sample wearing and tearing of spraying sample is 0.5%, and the contrast exemplar quality average loss do not sprayed is 5.5%, so, through contrast test, use the resistance to abrasion of the test sample of coating higher about 11 times than not spraying sample.
Each raw material cited by the present invention can realize the present invention, does not enumerate at this; The bound value of each raw material of the present invention, and its interval value, can realize the present invention, not enumerate at this.
Claims (2)
1. a process furnace heat radiation coating, is characterized in that described coating is made up of following component: gahnite powder 20%, manganese-aluminium spinelle powder 15%, ilmenite powder 10%, norbide 5%, ferric oxide 3%, desiliconization zirconium powder 2%, tackiness agent 25%, yellow starch gum 0.5%, all the other are solvent; Described tackiness agent is made up of by weight 1:1 mixing liquid phosphoric acid aluminum dihydrogen and liquid dihydro magnesium; The density of liquid phosphoric acid aluminum dihydrogen is between 1.1-1.46, and the density of liquid phosphoric acid dihydro magnesium is between 1.1-1.35.
2. a kind of process furnace heat radiation coating according to claim 1, is characterized in that: described solvent be selected from siloxane solvent, water one or both.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524263.8A CN103525142B (en) | 2013-10-31 | 2013-10-31 | A kind of process furnace heat radiation coating |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310524263.8A Division CN103525142B (en) | 2013-10-31 | 2013-10-31 | A kind of process furnace heat radiation coating |
Publications (1)
| Publication Number | Publication Date |
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| CN105110806A true CN105110806A (en) | 2015-12-02 |
Family
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510615732.6A Pending CN105198456A (en) | 2013-10-31 | 2013-10-31 | Thermal radiation paint |
| CN201510610909.3A Pending CN105110806A (en) | 2013-10-31 | 2013-10-31 | Thermal radiation coating for heating furnace |
| CN201310524263.8A Active CN103525142B (en) | 2013-10-31 | 2013-10-31 | A kind of process furnace heat radiation coating |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510615732.6A Pending CN105198456A (en) | 2013-10-31 | 2013-10-31 | Thermal radiation paint |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310524263.8A Active CN103525142B (en) | 2013-10-31 | 2013-10-31 | A kind of process furnace heat radiation coating |
Country Status (1)
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| CN (3) | CN105198456A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029191A (en) * | 2007-03-30 | 2007-09-05 | 孟中 | Nano-thermal-insulating coating and its production |
| CN102584280A (en) * | 2012-01-18 | 2012-07-18 | 赵凯 | Nano ceramic coating with high emissivity |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723707B (en) * | 2009-11-24 | 2012-12-26 | 南京工业大学 | Preparation method of high-temperature-resistant anti-infrared thermal radiation energy-saving coating |
| CN102815918A (en) * | 2011-06-10 | 2012-12-12 | 上海建冶科技工程股份有限公司 | Environment-friendly fireproof coating and preparation method thereof |
| CN102585571B (en) * | 2012-01-12 | 2013-11-27 | 广东新劲刚新材料科技股份有限公司 | Infrared energy-saving coating with anti-corrosion and anti-coking functions and preparation method thereof |
-
2013
- 2013-10-31 CN CN201510615732.6A patent/CN105198456A/en active Pending
- 2013-10-31 CN CN201510610909.3A patent/CN105110806A/en active Pending
- 2013-10-31 CN CN201310524263.8A patent/CN103525142B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029191A (en) * | 2007-03-30 | 2007-09-05 | 孟中 | Nano-thermal-insulating coating and its production |
| CN102584280A (en) * | 2012-01-18 | 2012-07-18 | 赵凯 | Nano ceramic coating with high emissivity |
Non-Patent Citations (1)
| Title |
|---|
| 陈建康 等: ""高温节能涂料及其在大型罩式炉上的应用"", 《节能技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103525142A (en) | 2014-01-22 |
| CN105198456A (en) | 2015-12-30 |
| CN103525142B (en) | 2015-11-04 |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151202 |
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| RJ01 | Rejection of invention patent application after publication |