CN104109407A - Inorganic anti-radiation coating for lining of radiation chamber of ethylene cracking furnace and preparation method of inorganic anti-radiation coating - Google Patents
Inorganic anti-radiation coating for lining of radiation chamber of ethylene cracking furnace and preparation method of inorganic anti-radiation coating Download PDFInfo
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- CN104109407A CN104109407A CN201410370688.2A CN201410370688A CN104109407A CN 104109407 A CN104109407 A CN 104109407A CN 201410370688 A CN201410370688 A CN 201410370688A CN 104109407 A CN104109407 A CN 104109407A
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Abstract
The invention discloses an inorganic anti-radiation coating for a lining of a radiation chamber of an ethylene cracking furnace. The inorganic anti-radiation coating comprises the following components in parts by weight: 15-20 parts of cobalt oxide, 1-10 parts of zirconium oxide, 3-10 parts of aluminum oxide, 1-5 parts of silica powder, 8-12 parts of silicon carbide, 3-7 parts of chromium oxide, 0-8 parts of manganese oxide, 0-5 parts of carborundum, 2-10 parts of sodium silicate, 5-8 parts of aluminum dihydrogen phosphate, 1-5 parts of quartz powder, 1-5 parts of feldspar powder, 10-15 parts of phosphorus pentoxide, 0-3 parts of chrome iron ores, 0-2 parts of zircon sand, 0-1 part of cerium oxide, 1-4 parts of graphite powder, 0.5-1.0 part of boron oxide and 0.1-0.5 part of carclazyte, wherein the particle of each solid component is not smaller than 350 meshes. The invention also discloses a preparation method of the inorganic anti-radiation coating for the lining of the radiation chamber of the ethylene cracking furnace. By using the inorganic anti-radiation coating disclosed by the invention, the high temperature resistance and thermal shock resistance of the coating can be effectively improved, the utilization ratio of radiant energy can be increased, and the binding force of the coating and the lining material of the cracking furnace can be enhanced.
Description
Technical field
The invention belongs to counter radiation inorganic paint technology, especially relate to counter radiation inorganic paint that a kind of ethane cracking furnace radiation chamber liner uses and preparation method thereof.
Background technology
Industrial furnace is China big power consumer, account for the 25-40% of total energy consumption, and the evenly heat efficiency of stove is only 30% left and right, and Industrial Stoves thermo-efficiency is low is domestic and international ubiquitous problem.At present, radiation paint, as a power-saving technology in stove, applies energy-conservation radiation paint at inner lining of kiln, and kiln furnace heat is radiated on heated product as much as possible, will make full use of energy, to reach energy-conservation object.
Conventionally, the process furnace that ceramics, petrochemical industry are used adopts aluminium-silica fireproof material more, and these material thermal shock resistances are poor, wear no resistance, and easily embrittlement comes off, and when furnace heating-up is heated, amount of heat is absorbed and scatters and disappears, and capacity usage ratio is extremely low.
In recent years, energy-saving high-temperature-resistant radiation inorganic paint has been widely recognized in the application of kiln, but application on ethane cracking furnace is not too successful, and reason is that pyrolyzer fire box temperature is too high, over 1200 ℃; There is the operating mode that fire box temperature frequently rises suddenly and plunges in pyrolyzer on the other hand, and coating easily occurs be full of cracks, comes off in this process, affects result of use and work-ing life.
Therefore, the utilization ratio of raising coating resistance to elevated temperatures, thermal shock resistance, increasing radiating capacity, enhancing coating and pyrolyzer inner lining material bonding force are the current technical problem underlying that will solve.
Summary of the invention
Technical problem to be solved by this invention is to provide counter radiation inorganic paint that a kind of ethane cracking furnace radiation chamber liner uses and preparation method thereof, can effectively improve coating resistance to elevated temperatures, thermal shock resistance, increasing radiating capacity utilization ratio, strengthen coating and pyrolyzer inner lining material bonding force.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
On the one hand, the counter radiation inorganic paint that a kind of ethane cracking furnace radiation chamber liner is used, its composition and parts by weight are: cobalt oxide 15-20 part, zirconium white 1-10 part, aluminum oxide 3-10 part, silica flour 1-5 part, silicon carbide 8-12 part, chromic oxide 3-7 part, manganese oxide 0-8 part, silicon carbide 0-5 part, water glass 2-10 part, aluminium dihydrogen phosphate 5-8 part, silica powder 1-5 part, Feldspar Powder 1-5 part, Vanadium Pentoxide in FLAKES 10-15 part, chromite 0-3 part, zircon sand 0-2 part, cerium oxide 0-1 part, Graphite Powder 99 1-4 part, boron oxide 0.5-1.0 part, carclazyte 0.1-0.5 part, wherein, the granularity of each solid ingredient is not less than 350 orders.
As a preferred version, its composition and parts by weight are: 18 parts of cobalt oxides, 7 parts of zirconium whites, 9 parts, aluminum oxide, 2.5 parts of silica flours, 10 parts, silicon carbide, 4 parts, chromic oxide, 3.5 parts of manganese oxide, 3 parts, silicon carbide, 6 parts of water glass, 7.5 parts of aluminium dihydrogen phosphates, 3 parts of silica powders, 3 parts of Feldspar Powders, 13 parts of Vanadium Pentoxide in FLAKESs, 3 parts of chromites, 1 part of zircon sand, 1 part of cerium oxide, 2 parts, graphite, 0.5 part of boron oxide, 0.2 part of carclazyte, wherein, the granularity of each solid ingredient is not less than 350 orders.
As another preferred version, its composition and parts by weight are: 19 parts of cobalt oxides, 4 parts of zirconium whites, 5 parts, aluminum oxide, 3 parts of silica flours, 12 parts, silicon carbide, 6 parts, chromic oxide, 4 parts of manganese oxide, 4 parts, silicon carbide, 5 parts of water glass, 5 parts of aluminium dihydrogen phosphates, 4 parts of silica powders, 3 parts of Feldspar Powders, 16 parts of Vanadium Pentoxide in FLAKESs, 2 parts of chromites, 0.6 part of zircon sand, 0.6 part of cerium oxide, 3.5 parts, graphite, 0.7 part of boron oxide, 0.3 part of carclazyte, wherein, the granularity of each solid ingredient is not less than 350 orders.
On the other hand, a kind of preparation method of the counter radiation inorganic paint of using as ethane cracking furnace radiation chamber liner, component proportion by above-mentioned arbitrary counter radiation inorganic paint is prepared burden, and through the reaction of polishing, soak, heat, stirring, mixing, filtration, barrelling, obtains product.
Counter radiation inorganic paint that ethane cracking furnace radiation chamber liner of the present invention is used and preparation method thereof, has the following advantages as follows:
1, thermal shock resistance is good, thermo-efficiency is high, with inner lining of kiln bonding strength large, particularly material there is quite high emittance, can improve the distribution of high radiant-energy spectrum, greatly improved the utilization ratio of radiating capacity.
2, there is good antioxidant property, can kiln inside and heating unit be provided and be adequately protected, reach objects such as extending fire proof material of furnace lining and heating unit life-span
3, less investment, instant effect, not needing that stove matrix is carried out to special transformation just can normal construction, and nonpoisonous and tasteless, non-corrosiveness, and Social benefit and economic benefit all will be very considerable.
Embodiment
The counter radiation inorganic paint that a kind of ethane cracking furnace radiation chamber liner of the present invention is used, its composition and parts by weight are: cobalt oxide 15-20 part, zirconium white 1-10 part, aluminum oxide 3-10 part, silica flour 1-5 part, silicon carbide 8-12 part, chromic oxide 3-7 part, manganese oxide 0-8 part, silicon carbide 0-5 part, water glass 2-10 part, aluminium dihydrogen phosphate 5-8 part, silica powder 1-5 part, Feldspar Powder 1-5 part, Vanadium Pentoxide in FLAKES 10-15 part, chromite 0-3 part, zircon sand 0-2 part, cerium oxide 0-1 part, Graphite Powder 99 1-4 part, boron oxide 0.5-1.0 part, carclazyte 0.1-0.5 part, wherein, the granularity of each solid ingredient is not less than 350 orders.
In said components proportioning, cobalt oxide plays catalyzer in high temperature resistant radiation paint, zirconium white is done additive and is used in coating, its melt temperature is about 2900 ℃, can improve viscosity of material and expand the temperature range that viscosity changes, there is good thermostability, when its content is 2%-3%, can improve material freedom from cracking performance; Also, because its unreactiveness is large, therefore can improve stability of material and acid and alkali-resistance ability, can also play the effect of opacifying agent.The internal surface area that aluminum oxide is every gram is up to hundreds of square metres, and active high absorption capacity is strong, does fire retardant, sorbent material, catalyzer and support of the catalyst in coating.Add the coating of titanium oxide, bright in luster, opacifying power is high, and strong coloring force can play a protective role to the physical stability of medium.Particularly added phosphoric acid salt, silicate can strengthen physical strength and the sticking power of paint film, prevented crackle, prevented that ultraviolet ray and moisture from seeing through, and extends the paint film life-span.
In addition; counter radiation inorganic paint of the present invention also has good antioxidant property; silicon carbide has very high intensity and good antioxidant property; at high temperature indeformable; can increase antioxidant property and the scour resistance of refractory materials; can kiln inside and heating unit be provided and be adequately protected, reach objects such as extending fire proof material of furnace lining and heating unit life-span.
As a preferred version, counter radiation inorganic paint of the present invention, its composition and parts by weight are specially: 18 parts of cobalt oxides, 7 parts of zirconium whites, 9 parts, aluminum oxide, 2.5 parts of silica flours, 10 parts, silicon carbide, 4 parts, chromic oxide, 3.5 parts of manganese oxide, 3 parts, silicon carbide, 6 parts of water glass, 7.5 parts of aluminium dihydrogen phosphates, 3 parts of silica powders, 3 parts of Feldspar Powders, 13 parts of Vanadium Pentoxide in FLAKESs, 3 parts of chromites, 1 part of zircon sand, 1 part of cerium oxide, 2 parts, graphite, 0.5 part of boron oxide, 0.2 part of carclazyte, wherein, the granularity of each solid ingredient is not less than 350 orders.
As another preferred version, counter radiation inorganic paint of the present invention, its composition and parts by weight are specially: 19 parts of cobalt oxides, 4 parts of zirconium whites, 5 parts, aluminum oxide, 3 parts of silica flours, 12 parts, silicon carbide, 6 parts, chromic oxide, 4 parts of manganese oxide, 4 parts, silicon carbide, 5 parts of water glass, 5 parts of aluminium dihydrogen phosphates, 4 parts of silica powders, 3 parts of Feldspar Powders, 16 parts of Vanadium Pentoxide in FLAKESs, 2 parts of chromites, 0.6 part of zircon sand, 0.6 part of cerium oxide, 3.5 parts, graphite, 0.7 part of boron oxide, 0.3 part of carclazyte, wherein, the granularity of each solid ingredient is not less than 350 orders.
The preparation method of a kind of counter radiation inorganic paint of using as ethane cracking furnace radiation chamber liner of the present invention, to adopt to prepare burden by the component proportion of above-mentioned arbitrary counter radiation inorganic paint, and successively through polishing, soak, heat the steps such as reaction, stirring, mixing, filtration, barrelling, finally obtain counter radiation inorganic paint product of the present invention.
Following examples are used for illustrating the present invention, yet the present invention can not be interpreted as and only comprise following examples.
Embodiment mono-
Coating composition proportioning:
18 parts of cobalt oxides, 7 parts of zirconium whites, 9 parts, aluminum oxide, 2.5 parts of silica flours, 10 parts, silicon carbide, 4 parts, chromic oxide, 3.5 parts of manganese oxide, 3 parts, silicon carbide, 6 parts of water glass, 7.5 parts of aluminium dihydrogen phosphates, 3 parts of silica powders, 3 parts of Feldspar Powders, 13 parts of Vanadium Pentoxide in FLAKESs, 3 parts of chromites, 1 part of zircon sand, 1 part of cerium oxide, 2 parts, graphite, 0.5 part of boron oxide, 0.2 part of carclazyte, each solid ingredient granularity is not less than 350 orders.
Preparation method:
By above-mentioned recipe ratio row batching, through polish, soak, heat reaction, stirring, mixing, filtration, barrelling must this coating products.
After testing, the physicals of this coating products is as follows:
Thermal shock resistance: press JB/T3648.1-1994 standard, under 1200 ℃ * air cooling condition, be not less than 15 times.
Refractoriness: press GB/T7322-2007 standard, be not less than 1800 ℃.
Volume density: press YB/T5200-1993 standard, under 110 ℃ * 24h condition, 2.56g/cm
3.
Line velocity of variation: press GB/T5988-2007 standard, at 1450 ℃ * 3h, bury under carbon condition+0.4%.
Embodiment bis-
Coating composition proportioning:
19 parts of cobalt oxides, 4 parts of zirconium whites, 5 parts, aluminum oxide, 3 parts of silica flours, 12 parts, silicon carbide, 6 parts, chromic oxide, 4 parts of manganese oxide, 4 parts, silicon carbide, 5 parts of water glass, 5 parts of aluminium dihydrogen phosphates, 4 parts of silica powders, 3 parts of Feldspar Powders, 16 parts of Vanadium Pentoxide in FLAKESs, 2 parts of chromites, 0.6 part of zircon sand, 0.6 part of cerium oxide, 3.5 parts, graphite, 0.7 part of boron oxide, 0.3 part of carclazyte, each solid ingredient granularity is not less than 350 orders.
By above-mentioned recipe ratio row batching, through polish, soak, heat reaction, stirring, mixing, filtration, barrelling must this coating products.
After testing, the physicals of this coating products is as follows:
Thermal shock resistance: press JB/T3648.1-1994 standard, under 1200 ℃ * air cooling condition, be not less than 16 times.
Refractoriness: press GB/T7322-2007 standard, be not less than 1850 ℃.
Volume density: press YB/T5200-1993 standard, under 110 ℃ * 24h condition, 2.55g/cm
3.
Line velocity of variation: press GB/T5988-2007 standard, at 1450 ℃ * 3h, bury under carbon condition+0.4%.
The prepared counter radiation inorganic paint of embodiment mono-, two is coated in to body of heater for testing inner, use temperature is the pyroprocessing of 1100 ℃, 1200 ℃, 1300 ℃ and 1400 ℃.Its spraying method, employing pressurized air is power, spray pressure is 1.0-1.5kg.f/c ㎡, coating thickness≤1.0 millimeter.
Heat emissivity coefficient test-results is as following table:
| ? | Be not coated with body of heater | Embodiment 1 | Embodiment 2 |
| 1100 ℃ of heat emissivity coefficients | 0.33 | 0.92 | 0.93 |
| 1200 ℃ of heat emissivity coefficients | 0.34 | 0.93 | 0.93 |
| 1300 ℃ of heat emissivity coefficients | 0.34 | 0.95 | 0.97 |
| 1400 ℃ of heat emissivity coefficients | 0.35 | 0.97 | 0.97 |
As can be seen from the results, adopt counter radiation inorganic paint of the present invention to be coated with, the heat emissivity coefficient of furnace lining inwall can be brought up to ε=0.92～0.97 by ε=0.33～0.35, greatly strengthen radiative transfer effect in stove, under comparatively high temps, the change of heat emissivity coefficient is more obvious.
Energy-saving effect before and after counter radiation inorganic paint spraying of the present invention is compared as follows table:
| Before use | After use |
| Date | Treatment capacity | Funnel temperature | Fire box temperature | Date | Treatment capacity | Funnel temperature | Fire box temperature |
| 8.22 | 25T/h | 172℃ | 1280℃ | 12.29 | 27T/h | 153℃ | 1230℃ |
| 8.21 | 25T/h | 176℃ | 1282℃ | 12.28 | 27T/h | 149℃ | 1227℃ |
| 8.20 | 25T/h | 178℃ | 1296℃ | 12.27 | 27T/h | 151℃ | 1233℃ |
| On average | 25T/h | 175.3℃ | 1286℃ | On average | 27T/h | 151℃ | 1230℃ |
As can be seen from the table, spray after counter radiation inorganic paint of the present invention, radiation chamber fire box temperature has reduced by 56 ℃, and funnel temperature has reduced by 24.3 ℃, has reached good effects of energy saving and emission reduction.And after counter radiation inorganic paint of the present invention is coated in stove, use several months surface still intact, do not occur that crackle, nothing come off, refractory fiber furnace lining is played a very good protection, extended its work-ing life, effect is very remarkable.
But, those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, to the variation of the above embodiment, modification, all will drop within the scope of claims of the present invention.
Claims (4)
1. the counter radiation inorganic paint that ethane cracking furnace radiation chamber liner is used, it is characterized in that, its composition and parts by weight are: cobalt oxide 15-20 part, zirconium white 1-10 part, aluminum oxide 3-10 part, silica flour 1-5 part, silicon carbide 8-12 part, chromic oxide 3-7 part, manganese oxide 0-8 part, silicon carbide 0-5 part, water glass 2-10 part, aluminium dihydrogen phosphate 5-8 part, silica powder 1-5 part, Feldspar Powder 1-5 part, Vanadium Pentoxide in FLAKES 10-15 part, chromite 0-3 part, zircon sand 0-2 part, cerium oxide 0-1 part, Graphite Powder 99 1-4 part, boron oxide 0.5-1.0 part, carclazyte 0.1-0.5 part, wherein, the granularity of each solid ingredient is not less than 350 orders.
2. the counter radiation inorganic paint that ethane cracking furnace radiation chamber liner according to claim 1 is used, it is characterized in that, its composition and parts by weight are: 18 parts of cobalt oxides, 7 parts of zirconium whites, 9 parts, aluminum oxide, 2.5 parts of silica flours, 10 parts, silicon carbide, 4 parts, chromic oxide, 3.5 parts of manganese oxide, 3 parts, silicon carbide, 6 parts of water glass, 7.5 parts of aluminium dihydrogen phosphates, 3 parts of silica powders, 3 parts of Feldspar Powders, 13 parts of Vanadium Pentoxide in FLAKESs, 3 parts of chromites, 1 part of zircon sand, 1 part of cerium oxide, 2 parts, graphite, 0.5 part of boron oxide, 0.2 part of carclazyte, wherein, the granularity of each solid ingredient is not less than 350 orders.
3. the counter radiation inorganic paint that ethane cracking furnace radiation chamber liner according to claim 1 is used, it is characterized in that, its composition and parts by weight are: 19 parts of cobalt oxides, 4 parts of zirconium whites, 5 parts, aluminum oxide, 3 parts of silica flours, 12 parts, silicon carbide, 6 parts, chromic oxide, 4 parts of manganese oxide, 4 parts, silicon carbide, 5 parts of water glass, 5 parts of aluminium dihydrogen phosphates, 4 parts of silica powders, 3 parts of Feldspar Powders, 16 parts of Vanadium Pentoxide in FLAKESs, 2 parts of chromites, 0.6 part of zircon sand, 0.6 part of cerium oxide, 3.5 parts, graphite, 0.7 part of boron oxide, 0.3 part of carclazyte, wherein, the granularity of each solid ingredient is not less than 350 orders.
4. the preparation method of a counter radiation inorganic paint of using as ethane cracking furnace radiation chamber liner, it is characterized in that, component proportion by the counter radiation inorganic paint as in claim 1-3 any one is prepared burden, and through the reaction of polishing, soak, heat, stirring, mixing, filtration, barrelling, obtains product.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273451A (en) * | 2015-11-13 | 2016-01-27 | 江苏宇恒电气有限公司 | Anti-corrosion coating for surface of low-voltage bus duct |
| CN105754385A (en) * | 2016-05-06 | 2016-07-13 | 河南省特种设备安全检测研究院新乡分院 | Anti-radiation anti-corrosion coating and preparation method thereof |
| CN105802288A (en) * | 2016-05-06 | 2016-07-27 | 河南省特种设备安全检测研究院新乡分院 | Heat-resistant radiation protective paint and preparation method thereof |
| CN105885479A (en) * | 2016-05-06 | 2016-08-24 | 河南省特种设备安全检测研究院新乡分院 | High-temperature resistant anti-radiation paint and preparation method thereof |
| CN109385120A (en) * | 2018-09-30 | 2019-02-26 | 上海乐恒石油化工集团有限公司 | Aeroge high temperature resistant radiates inorganic coating |
| CN112209727A (en) * | 2020-09-02 | 2021-01-12 | 珠海弘德表面技术有限公司 | Ceramic coating for heating surface of power plant boiler and preparation method thereof |
| CN112251052A (en) * | 2020-10-27 | 2021-01-22 | 上海载坤环保新材料科技有限公司 | High-temperature-resistant heat-preservation dry powder functional film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760058A (en) * | 2010-02-01 | 2010-06-30 | 张春雨 | High-temperature counter radiation resistant inorganic coating and preparation method thereof |
-
2014
- 2014-07-30 CN CN201410370688.2A patent/CN104109407A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760058A (en) * | 2010-02-01 | 2010-06-30 | 张春雨 | High-temperature counter radiation resistant inorganic coating and preparation method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273451A (en) * | 2015-11-13 | 2016-01-27 | 江苏宇恒电气有限公司 | Anti-corrosion coating for surface of low-voltage bus duct |
| CN105754385A (en) * | 2016-05-06 | 2016-07-13 | 河南省特种设备安全检测研究院新乡分院 | Anti-radiation anti-corrosion coating and preparation method thereof |
| CN105802288A (en) * | 2016-05-06 | 2016-07-27 | 河南省特种设备安全检测研究院新乡分院 | Heat-resistant radiation protective paint and preparation method thereof |
| CN105885479A (en) * | 2016-05-06 | 2016-08-24 | 河南省特种设备安全检测研究院新乡分院 | High-temperature resistant anti-radiation paint and preparation method thereof |
| CN105754385B (en) * | 2016-05-06 | 2018-05-29 | 河南省特种设备安全检测研究院新乡分院 | Radiation protection anticorrosive paint and preparation method thereof |
| CN105885479B (en) * | 2016-05-06 | 2018-05-29 | 河南省特种设备安全检测研究院新乡分院 | High temperature resistant radiation shielding coating and preparation method thereof |
| CN105802288B (en) * | 2016-05-06 | 2018-05-29 | 河南省特种设备安全检测研究院新乡分院 | High-temperature resistant anti-corrosive radiation shielding coating and preparation method thereof |
| CN109385120A (en) * | 2018-09-30 | 2019-02-26 | 上海乐恒石油化工集团有限公司 | Aeroge high temperature resistant radiates inorganic coating |
| CN112209727A (en) * | 2020-09-02 | 2021-01-12 | 珠海弘德表面技术有限公司 | Ceramic coating for heating surface of power plant boiler and preparation method thereof |
| CN112251052A (en) * | 2020-10-27 | 2021-01-22 | 上海载坤环保新材料科技有限公司 | High-temperature-resistant heat-preservation dry powder functional film |
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