WO2002040601A1 - Materiau de revetement a rayonnement thermique a base d'oxyde de titane - Google Patents
Materiau de revetement a rayonnement thermique a base d'oxyde de titane Download PDFInfo
- Publication number
- WO2002040601A1 WO2002040601A1 PCT/JP2001/009932 JP0109932W WO0240601A1 WO 2002040601 A1 WO2002040601 A1 WO 2002040601A1 JP 0109932 W JP0109932 W JP 0109932W WO 0240601 A1 WO0240601 A1 WO 0240601A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- titanium oxide
- furnace
- reduced
- reduced titanium
- coating
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
Definitions
- the present invention relates to increasing the radiant heat transfer in an industrial heating furnace by forming a coating by coating or coating the inner wall surface of the furnace.
- coatings and coating materials that increase the radiant heat transfer in the furnace by applying or coating them on the inner wall surface of industrial heating furnaces are coatings and coating materials based on silicon carbide (SiC).
- SiC silicon carbide
- the paint to the substrate a Kuromai Bok (C r 2 0 3), Koti ring material is known. The latter has been granted a patent under Japanese Patent No. 1 480 360.
- the former coating and coating material based on silicon carbide works effectively up to a furnace temperature of 800 ° C, but from the temperature above this temperature, silicon carbide is whitened by thermal oxidation and radiated. Energy absorption and emissivity drop rapidly and lose their effectiveness.
- titanium oxide and reduced titanium oxide are used as base materials for paints and coating materials.
- the present invention utilizes the physical properties of titanium oxide and reduced titanium oxide and their changes.
- the properties of titanium oxide and reduced titanium oxide will be described in detail.
- the oxygen partial pressure in the furnace becomes extremely low when the temperature in the furnace reaches a high temperature of 1000 ° C or more. If the oxygen partial pressure is lowered at a high temperature furnace, two oxygen atoms of the titanium oxide (Ti0 2) in the crystal, detached from the system, titanium dioxide is changed to the reduction of titanium oxide. heat
- Ti0 Ti 2 0 3 + o 2 T
- the reduced titanium oxide can be represented by T 0,
- Ti0 2 crystals Ti 4+ 0 2 2 - a.
- Ti is one-electron reduced from Ti 4 + 3 + occurs, as a result, the TiO sigma was originally insulators, changes in n-type semiconductor. Therefore, the reduced titanium oxide is conductive.
- FIG. 1A shows light absorption and transmittance of rutile single crystal (TiO 2 ) and reduced titanium oxide.
- Table ⁇ shows the properties of reduced oxidized titanium. Table (1). Physical properties of reduced titanium oxide
- TiO 2 were mixed Ti and Ti0 2 in stoichiometric top, in an inert gas, if fired at 1600 ° C, but becomes TiO, since there is no Me metal in the furnace, TiO does not generate.
- Ti0 2 is, C0 2 or, H 2 Kiri ⁇ is reduced to Ti 3 0 5 at 800 to 1200 ° C.
- composition of the two-phase coexistence also referred to as multiphase
- T i 4 0 7 the compositions of these two phases coexist and most black opaque ⁇ Li, absorption of energy - the highest emissivity.
- the Ti0 2 Metal particles or supporting the oxides, or to dough flops chemical equivalent, when heating the high charge of the metal ions are generated, by substituting Ti 4 + of Ti0 2 in the crystal Color appears and energy absorption increases.
- the colors that appear depend on the type of metal.
- the element Ti exists entirely on the earth's surface in an oxidized state.
- the three raw materials used for titanium are ilmenite ore, rutile ore, and anatase ore. Engages with oxide and does not exist as pure titanium.
- Irumenai DOO Although there is a difference by origin, its major component Ti0 2 is accounted for 0% YakuRyo, rest is FeO, Fe0 3, SiO z, Cr 2 0 3, MnO, oxides such as Al 2 0 3 Is mixed.
- Rutile contains Ti0 2 5% or more completion, the outer, FeO, Si0 2, Al 2 0 3, MgO,
- Oxides such as ZrO 2 , etc. are mixed. Illuminate exhibits a black color, and rutile exhibits a blue-black color.
- raw ores are directly used as a base material of the present invention by being powdered.
- 11 2 Kiri ⁇ heated in air in a furnace at 800 ⁇ 1200 ° C tighten changing the reduction of titanium oxide to the substrate of the present invention.
- Titanium ⁇ slag (tan slug) is reduced by being exposed to high heat in a blast furnace and can be used as a base material of the present invention without any modification.
- Titanium oxide is the most physically and chemically stable substance.
- Other similar semiconductor material except for the titanium oxide emissions for example, Succoth Oko selenide force Doniumu (CdSe), etc. dinitrogen oxide Saibu (Nb 2 0 5), both upon absorption of high energy, autolysis It has been known.
- This phenomenon is common to oxide semiconductors. The semiconductor absorbs more energy than its band gap, and the holes (H +) after electrons are removed by an excitation reaction cause self-erosion. To get up. However, strangely enough, titanium oxide alone does not erode.
- Titanium oxide is not attacked by acids, bases, and organic solvents, and is well-wet but not soluble in water.
- the furnace material In a furnace at a high temperature and full of various gas components, the furnace material is eroded as the reaction proceeds and the surface of the furnace material is reduced. Titanium oxide adsorbs H 2 and CO 2 well. H 2 and C0 2 adsorbed on the surface of the titanium oxide in the high temperature furnace, instead act as Motozai (electron donor), allowed to change the reduction titanium oxide Ti0 2. Therefore, the reduced titanium oxide shows strong corrosion resistance (Corrosion resistance).
- the key point of the present invention lies in the discovery of a phenomenon that when titanium oxide (except for TiO) is applied and coated on the inner wall surface of an industrial heating furnace, radiant heat energy is significantly increased.
- titanium oxide except for TiO
- the reaction mechanism in which this phenomenon appears in a high-temperature furnace is extremely complicated, and it is not easy to fully understand this. Absent.
- radicals active species are generated on the surface of the reduced titanium oxide3 ) , and the reactants and products in the furnace undergo a chain-radical reaction.
- One of the secondary effects of the present invention is that the exhaust gas temperature at the gas exhaust port is significantly reduced.
- This phenomenon charge transfer transition to metals ⁇ reducing adsorbed on the surface of titanium oxide C0 2 (or NO and N0 2), i.e., the ligand for operation 5), C0 2 oxidation dissociation occurs, that in but get explanation, this phenomenon, i.e., nothing but the reduction of C0 2 emissions.
- analysis of exhaust gas by gas chromatography is currently underway, and as soon as the analysis data is available, it will be supplemented and submitted with a correction procedure.
- the reaction between oxygen and a metal is generally an oxidation reaction, that is, extraction of an electron, whereas a ligand system donates an electron.
- the former is called oxidation, and the latter is called Oxygenation.
- titanium oxide that has already been reduced is used, so that it is most preferable in the practice of the present invention.
- titanium slag is low cost.
- Titanium * Slag may be quenched or slowly cooled when removed from the furnace.If quenched in an inert gas, complete reduced titanium oxide with an oxygen-defective structure is obtained, but slowly cooled in air. Then, some changes to T i 0 2 captures oxygen in the crystal.
- the particle size of the titanium oxide serving as the base material of the present invention becomes a problem.
- absorption, reflection and transmission of infrared energy by reduced titanium oxide have a large particle size dependence. It is important to select a particle size that can absorb near infrared energy to the maximum.
- the base material is titanium and slag, and the components are as shown in Table (2).
- Table (2) Crush the titanium and slag listed in Table (2) to adjust the particle size distribution to 0.8 to 3 ⁇ , and prepare a paint and coating material composition containing a binder and an inorganic adhesive. Li, by the case connexion, the addition of small amounts of Kuromai bets (C r 2 0 3) and silica (S i 0 2).
- a l 2 0 3, S i 0 2, C r 2 0 3, is a spinel-type compound is formed at a high temperature of the furnace wall surfaces, bonding strength and adhesion becomes stronger.
- S i 0 2 a binder, because of the high thermal expansion, requiring that the amount is appropriate.
- the coating composition consisting of titanium, slag, binder, and inorganic adhesive.
- the coating material composition is finally suspended and dispersed in an aqueous solution to finish the slurry.
- the mixing ratio between the aqueous solution and the solid component is 50:50.
- the work of forming the coating film and coating film on the furnace wall surface is mainly performed by a spraying method using a spray gun, but in some cases, a water plasma spraying method, which is one of the coating methods, may be used. it can.
- the coating film is formed by spraying with a spray gun, bake by applying heat at 150 to 180 ° C. No baking step is required when forming a film by thermal spraying.
- the present invention can be immediately applied to an industrial heating furnace, and the effect thereof appears as a remarkable fuel saving effect. Second, it can significantly reduce carbon dioxide emissions from industrial heating furnaces.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
- Paints Or Removers (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002543601A JP4096736B2 (ja) | 2000-11-15 | 2001-11-14 | 酸化チタン系熱放射性塗料 |
KR1020037006363A KR100658569B1 (ko) | 2000-11-15 | 2001-11-14 | 산화티타늄계 열방사성 도료 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000386121 | 2000-11-15 | ||
JP2000-386121 | 2000-11-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002040601A1 true WO2002040601A1 (fr) | 2002-05-23 |
Family
ID=18853270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/009932 WO2002040601A1 (fr) | 2000-11-15 | 2001-11-14 | Materiau de revetement a rayonnement thermique a base d'oxyde de titane |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4096736B2 (ja) |
KR (1) | KR100658569B1 (ja) |
WO (1) | WO2002040601A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010504378A (ja) * | 2006-09-21 | 2010-02-12 | ウーデ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 改善された加熱特性を有するコークス炉 |
JP2010515645A (ja) * | 2007-01-11 | 2010-05-13 | チバ ホールディング インコーポレーテッド | 顔料混合物 |
CN102447021A (zh) * | 2010-10-08 | 2012-05-09 | 中科半导体科技有限公司 | 半导体钛晶医疗保健芯片的制造方法 |
DE112017004063B4 (de) | 2016-08-12 | 2022-06-02 | Istanbul Teknik Universitesi | Verfahren zur Herstellung einer Dickbeschichtung mit schichtweisem Aufbau |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100734709B1 (ko) * | 2006-02-07 | 2007-07-02 | 카요코 소라 | 적외활성피막 |
CN104151875B (zh) * | 2014-07-10 | 2015-10-28 | 池州市英派科技有限公司 | 一种强度增强的表面改性纳米二氧化钛及其制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57109868A (en) * | 1980-12-27 | 1982-07-08 | Tatsuo Miyake | Heat radiation paint |
JPS6217021A (ja) * | 1985-07-12 | 1987-01-26 | Otsuka Chem Co Ltd | 還元酸化チタンの製法 |
EP0244776A2 (en) * | 1986-05-09 | 1987-11-11 | General Electric Company | Emissive coating for X-ray target |
JP2000018586A (ja) * | 1998-06-26 | 2000-01-18 | Masuo Hikosaka | 暖 炉 |
US6037289A (en) * | 1995-09-15 | 2000-03-14 | Rhodia Chimie | Titanium dioxide-based photocatalytic coating substrate, and titanium dioxide-based organic dispersions |
-
2001
- 2001-11-14 JP JP2002543601A patent/JP4096736B2/ja not_active Expired - Lifetime
- 2001-11-14 KR KR1020037006363A patent/KR100658569B1/ko not_active IP Right Cessation
- 2001-11-14 WO PCT/JP2001/009932 patent/WO2002040601A1/ja not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57109868A (en) * | 1980-12-27 | 1982-07-08 | Tatsuo Miyake | Heat radiation paint |
JPS6217021A (ja) * | 1985-07-12 | 1987-01-26 | Otsuka Chem Co Ltd | 還元酸化チタンの製法 |
EP0244776A2 (en) * | 1986-05-09 | 1987-11-11 | General Electric Company | Emissive coating for X-ray target |
US6037289A (en) * | 1995-09-15 | 2000-03-14 | Rhodia Chimie | Titanium dioxide-based photocatalytic coating substrate, and titanium dioxide-based organic dispersions |
JP2000018586A (ja) * | 1998-06-26 | 2000-01-18 | Masuo Hikosaka | 暖 炉 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010504378A (ja) * | 2006-09-21 | 2010-02-12 | ウーデ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 改善された加熱特性を有するコークス炉 |
JP2010515645A (ja) * | 2007-01-11 | 2010-05-13 | チバ ホールディング インコーポレーテッド | 顔料混合物 |
CN102447021A (zh) * | 2010-10-08 | 2012-05-09 | 中科半导体科技有限公司 | 半导体钛晶医疗保健芯片的制造方法 |
DE112017004063B4 (de) | 2016-08-12 | 2022-06-02 | Istanbul Teknik Universitesi | Verfahren zur Herstellung einer Dickbeschichtung mit schichtweisem Aufbau |
Also Published As
Publication number | Publication date |
---|---|
KR20040043097A (ko) | 2004-05-22 |
KR100658569B1 (ko) | 2006-12-15 |
JP4096736B2 (ja) | 2008-06-04 |
JPWO2002040601A1 (ja) | 2004-03-25 |
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