A kind of energy-saving industrial furnace
Technical field
The present invention relates to a kind of energy-saving industrial furnace.
Background technology
Industrial furnace is the highly energy-consuming equipment in numerous energy consumption equipment, its energy consumption account for enterprise's energy consumption 10%~
70%, have is the most.As a example by electronics industry stove, its energy consumption accounts for the 30% of electron trade energy consumption;Pottery,
The stove energy consumption of glass production enterprise, accounts for the 50% of enterprise's energy consumption, and have is the highest.
Owing to being affected by factors such as product processes, organization of production, stove structure, stove matrix materials, industrial furnace
Efficiency of utilization relatively low.If the plate glass stove thermal efficiency is about 36%, the thermal efficiency of tunnel cave is the most only 25%
~30%, the heat loss of kiln car accounts for 30%, and kiln body is dispelled the heat 8%~10%.Therefore, the energy-conservation latent of industrial furnace how is promoted
Power is permanent important topic.
Summary of the invention
It is an object of the invention to provide a kind of energy-saving industrial furnace, the furnace foundation body of this stove can reduce by stove to
The heat of the outer heat conduction loss of stove, and efficiency of utilization can be improved.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of energy-saving industrial furnace, including furnace foundation body, furnace foundation body uses heat resistance fiber, refractory brick or micro Nano material;Described
The outer wall of furnace foundation body is coated with combination type heat insulating coating, and the inwall of furnace foundation body is coated with infra-red radiation energy-saving coating;Described combination
Formula heat insulation coating comprises and is arranged in order the inside holding coating of coating, middle heat insulation coating and external thermal insulation coating from inside to outside;
Inside holding coating is based on weight/mass percentage composition, including following composition: 10~38% fly ash float, 7~24% zirconium oxide gas
Gel, 11~23% Kaolin, 5~13% bentonite, 3~12% sepiolite fibre, 9~20% zirconium colloidal sol, 0.5~2% dispersant,
0.2~2% coalescents, 0.5~1% wetting agent, 0.2~1% thickening agent, 0.5~1% defoamer;8~15% deionized water;
Middle heat insulation coating is based on weight/mass percentage composition, including following composition: 11~32% hollow ceramic microspheres, 8~23% aluminium oxide
Aeroge, 9~21% mica powder, 6~14% bentonite, 4~14% ceramic fibre, 8~18% Alumina gel, 0.5~2% dispersant,
0.2~2% coalescents, 0.5~1.5% wetting agent, 0.1~2% thickening agent, 0.5~1.5% defoamer;7~15% deionized water;
External thermal insulation coating is based on weight/mass percentage composition, including following composition: 8~35% hollow glass micropearl, 3~18% silicon oxide gas
Gel, 6~20% Pulvis Talci, 0.5~8% bentonite, 3~10% quartz fibre, 4~16% Ludox, 5~9% aluminium dihydrogen phosphate,
3~6% waterglass, 0.5~3% dispersant, 0.1~2% coalescents, 0.5~2% wetting agent, 0.1~3% thickening agent, 0.1~
3% defoamer and 5~12% deionized water;
Described infra-red radiation energy-saving coating is based on weight/mass percentage composition, including following composition: 3~8% Al doping SiC Yu C adulterate
SiO2Compound material, 2~6% silicon boride, 2~5% titanium boride, 2~4% zirconium boride, 2~4% lanthanum boride, 3~7% boron carbide, 5~
13% carborundum, 1~3% yttrium carbide, 1~5% molybdenum disilicide, 1~5% tungsten silicide, 1~5% zirconium diboride, 4~16% silicon oxide,
2~5% ferrum oxide, 1~3% copper oxide, 1~5% manganese oxide, 1~3% chromium oxide, 1~3% cobalt oxide, 1~7% Kaolin, 2~8%
Boron glass powder, 1~5% bentonite, 4~18% Ludox, 2~7% Alumina gel, 1~5% aluminium dihydrogen phosphate, 1~2% dispersant, 5~
11% deionized water.
Above-mentioned all coating materials are the most prepared according to respective ratio mix homogeneously.
Described inside holding coating can heatproof 1700 DEG C, middle heat insulation coating can heatproof 1100 DEG C, external thermal insulation coating can
Heatproof 600 DEG C, it is achieved different levels, the insulation of different temperatures section.
Further, the thickness of described infra-red radiation energy-saving coating is 0.1~3.6mm.
Further, the thickness of described combination type heat insulating coating is 0.6~32mm, wherein inside holding coating thickness, in
Heat insulation coating is 0.2~15mm with the thickness of external thermal insulation coating.
The invention has the beneficial effects as follows, application strengthening radiant heat transfer combines the power-saving technology of thermodynamics insulation, bag
Include the infrared high radiotechnology of the high temperature resistant infrared radiating coating of wall in furnace foundation body, furnace foundation external wall combination type heat insulating coating
Thermal insulation technology, coating can be attached to inwall and the outer wall of furnace foundation body for a long time, have energy-conservation, do not fall off, do not ftracture, improve product
The feature such as quality, environmental protection;Furnace foundation external wall combination type heat insulating coating, by different levels interior, domestic and abroad, different temperatures section
Heat insulation coating, effectively furnace foundation body is preferably minimized by the heat of heat conduction loss outside stove by stove;Wall in furnace foundation body
With the high temperature resistant infrared radiating coating of micro nano structure, form the structure of densification at stove inwall, and effectively penetrate into furnace foundation body
In material, at high temperature there is infrared high radiant rate, can will be intercepted by the radiations heat energy and furnace outer wall that are radiated stove inwall in stove
The conduction of heat heat returned, effective re-radiation is to the product in stove;Thus substantially increase efficiency of utilization.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the enlarged partial sectional view of the present invention.
Detailed description of the invention
Embodiment one
Shown in Fig. 1 Yu Fig. 2, the present invention provides a kind of energy-saving industrial furnace, and including furnace foundation body 2, furnace foundation body 2 is internal is stove
Thorax 1, furnace foundation body 2 uses heat resistance fiber, refractory brick or micro Nano material;The outer wall of described furnace foundation body 2 is coated with combination type heat insulating
Coating 4, the inwall of furnace foundation body 2 is coated with infra-red radiation energy-saving coating 3;Described combination type heat insulating coating 4 comprises and depends on from inside to outside
Inside holding coating 6, middle heat insulation coating 7 and the external thermal insulation coating 8 of secondary arrangement coating;
Inside holding coating 6 is based on weight/mass percentage composition, including following composition: 24% fly ash float, 15% zirconia aerogels,
16% Kaolin, 9% bentonite, 8% sepiolite fibre, 11% zirconium colloidal sol, 0.5% dispersant, 0.5% coalescents, 1% wetting agent, 1%
Thickening agent, 1% defoamer and 13% deionized water;
Middle heat insulation coating 7 is based on weight/mass percentage composition, including following composition: 13% hollow ceramic microspheres, 15% alumina aerogels,
21% mica powder, 6% bentonite, 9% ceramic fibre, 17% Alumina gel, 1% dispersant, 2% coalescents, 1.5% wetting agent, 1% thickening
Agent, 0.5% defoamer and 13% deionized water;
External thermal insulation coating 8 is based on weight/mass percentage composition, including following composition: 22% hollow glass micropearl, 17% silica aerogel,
13% Pulvis Talci, 3% bentonite, 6% quartz fibre, 16% Ludox, 8% aluminium dihydrogen phosphate, 5% waterglass, 1.5% dispersant, 1%
Coalescents, 0.5% wetting agent, 1% thickening agent, 1% defoamer and 5% deionized water;
Infra-red radiation energy-saving coating 3 is based on weight/mass percentage composition, including following composition: 8% Al doping SiC Yu C doping SiO2's
Compound material, 4% silicon boride, 3% titanium boride, 3% zirconium boride, 2% lanthanum boride, 4% boron carbide, 6% carborundum, 1% yttrium carbide, 1% 2 silicon
Change molybdenum, 1% tungsten silicide, 1% zirconium diboride, 16% silicon oxide, 2% ferrum oxide, 2% copper oxide, 3% manganese oxide, 1% chromium oxide, 1% oxygen
Change cobalt, 3% Kaolin, 5% boron glass powder, 4% bentonite, 15% Ludox, 3% Alumina gel, 2% aluminium dihydrogen phosphate, 2% dispersant and
7% deionized water.The mean diameter of infra-red radiation energy-saving coating 3 composition is below 0.5 μm.
Above-mentioned all coating materials are the most prepared according to respective ratio mix homogeneously, are sprayed at stove with brush or machine after preparing
The inside and outside wall of kiln matrix 2.
The thickness of inside holding coating 6 is 0.2mm, the thickness of middle heat insulation coating 7 is 0.2mm, and the thickness of external thermal insulation coating 8 is
0.2mm;The thickness of infra-red radiation energy-saving coating 3 is 1mm.
Through test, the high temperature resistant infrared radiating coating of stove inwall of the present embodiment radiance when 1500 DEG C of operating temperatures is
0.95, the thermal conductivity of furnace outer wall combination type heat insulating coating is 0.032 W/ (m K).
Embodiment two
The present embodiment is identical with the basic structure of embodiment one, and difference is:
Inside holding coating 6 is based on weight/mass percentage composition, including following composition: 17% fly ash float, 19% zirconia aerogels,
17% Kaolin, 5% bentonite, 5% sepiolite fibre, 18% zirconium colloidal sol, 0.5% dispersant, 2% coalescents, 0.5% wetting agent,
0.5% thickening agent, 0.5% defoamer and 15% deionized water;
Middle heat insulation coating 7 is based on weight/mass percentage composition, including following composition: 19% hollow ceramic microspheres, 16% alumina aerogels,
13% mica powder, 10% bentonite, 10% ceramic fibre, 16% Alumina gel, 0.5% dispersant, 1% coalescents, 0.5% wetting agent, 2%
Thickening agent, 1% defoamer and 11% deionized water;
External thermal insulation coating 8 is based on weight/mass percentage composition, including following composition: 17% hollow glass micropearl, 16% silica aerogel,
18% Pulvis Talci, 3.4% bentonite, 9% quartz fibre, 8% Ludox, 7% aluminium dihydrogen phosphate, 6% waterglass, 0.5% dispersant,
0.1% coalescents, 1% wetting agent, 1.5% thickening agent, 1.5% defoamer and 11% deionized water;
Infra-red radiation energy-saving coating 3 is based on weight/mass percentage composition, including following composition: 5% Al doping SiC Yu C doping SiO2's
Compound material, 5% silicon boride, 2% titanium boride, 2% zirconium boride, 2% lanthanum boride, 5% boron carbide, 7% carborundum, 3% yttrium carbide, 5% 2 silicon
Change molybdenum, 5% tungsten silicide, 3% zirconium diboride, 10% silicon oxide, 5% ferrum oxide, 2% copper oxide, 3% manganese oxide, 1% chromium oxide, 1% oxygen
Change cobalt, 2% Kaolin, 2% boron glass powder, 1% bentonite, 11% Ludox, 3% Alumina gel, 1% aluminium dihydrogen phosphate, 2% dispersant and
11% deionized water.The mean diameter of infra-red radiation energy-saving coating 3 composition is below 1 μm.
Above-mentioned all coating materials are the most prepared according to respective ratio mix homogeneously, are sprayed at stove with brush or machine after preparing
The inside and outside wall of kiln matrix 2.
The thickness of inside holding coating 6 is 15mm, the thickness of middle heat insulation coating 7 is 2mm, and the thickness of external thermal insulation coating 8 is
15mm;The thickness of infra-red radiation energy-saving coating 3 is 3.6mm.
Through test, the high temperature resistant infrared radiating coating of stove inwall of the present embodiment radiance when 1700 DEG C of operating temperatures is
0.96, the thermal conductivity of furnace outer wall combination type heat insulating coating is 0.028 W/ (m K).
Embodiment three
The present embodiment is identical with the basic structure of embodiment one, and difference is:
Inside holding coating 6 is based on weight/mass percentage composition, including following composition: 10% fly ash float, 24% zirconia aerogels,
23% Kaolin, 5% bentonite, 6% sepiolite fibre, 20% zirconium colloidal sol, 2% dispersant, 0.2% coalescents, 0.6% wetting agent,
0.2% thickening agent, 1% defoamer and 8% deionized water;
Middle heat insulation coating 7 is based on weight/mass percentage composition, including following composition: 11% hollow ceramic microspheres, 14% alumina aerogels,
19% mica powder, 10% bentonite, 14% ceramic fibre, 18% Alumina gel, 2% dispersant, 2% coalescents, 1% wetting agent, 0.5% increasing
Thick dose, 1.5% defoamer and 7% deionized water;
External thermal insulation coating 8 is based on weight/mass percentage composition, including following composition: 8% hollow glass micropearl, 18% silica aerogel,
20% Pulvis Talci, 8% bentonite, 3% quartz fibre, 15% Ludox, 9% aluminium dihydrogen phosphate, 3% waterglass, 1% dispersant, 1% film forming
Auxiliary agent, 0.5% wetting agent, 3% thickening agent, 2% defoamer and 8.5% deionized water;
Infra-red radiation energy-saving coating 3 is based on weight/mass percentage composition, including following composition: 6% Al doping SiC Yu C doping SiO2's
Compound material, 6% silicon boride, 5% titanium boride, 3% zirconium boride, 4% lanthanum boride, 3% boron carbide, 5% carborundum, 2% yttrium carbide, 1% 2 silicon
Change molybdenum, 3% tungsten silicide, 2% zirconium diboride, 13% silicon oxide, 4% ferrum oxide, 1% copper oxide, 1% manganese oxide, 1% chromium oxide, 1% oxygen
Change cobalt, 2% Kaolin, 4% boron glass powder, 3% bentonite, 18% Ludox, 3% Alumina gel, 3% aluminium dihydrogen phosphate, 1% dispersant and
5% deionized water.The mean diameter of infra-red radiation energy-saving coating 3 composition is below 0.5 μm.
Above-mentioned all coating materials are the most prepared according to respective ratio mix homogeneously, are sprayed at stove with brush or machine after preparing
The inside and outside wall of kiln matrix 2.
The thickness of inside holding coating 6 is 1mm, the thickness of middle heat insulation coating 7 is 15mm, and the thickness of external thermal insulation coating 8 is
0.3mm;The thickness of infra-red radiation energy-saving coating 3 is 0.3mm.
Through test, the high temperature resistant infrared radiating coating of stove inwall of the present embodiment radiance when 1500 DEG C of operating temperatures is
0.89, the thermal conductivity of furnace outer wall combination type heat insulating coating is 0.030 W/ (m K).
Embodiment four
The present embodiment is identical with the basic structure of embodiment one, and difference is:
Inside holding coating 6 is based on weight/mass percentage composition, including following composition: 38% fly ash float, 7% zirconia aerogels, 12%
Kaolin, 13% bentonite, 3% sepiolite fibre, 9% zirconium colloidal sol, 2% dispersant, 1% coalescents, 1% wetting agent, 1% thickening agent,
1% defoamer and 12% deionized water;
Middle heat insulation coating 7 is based on weight/mass percentage composition, including following composition: 22% hollow ceramic microspheres, 8% alumina aerogels,
15% mica powder, 14% bentonite, 12% ceramic fibre, 8% Alumina gel, 1% dispersant, 0.2% coalescents, 1.3% wetting agent, 2%
Thickening agent, 1.5% defoamer and 15% deionized water;
External thermal insulation coating 8 is based on weight/mass percentage composition, including following composition: 30% hollow glass micropearl, 3% silica aerogel,
10% Pulvis Talci, 7% bentonite, 8% quartz fibre, 14% Ludox, 5% aluminium dihydrogen phosphate, 4% waterglass, 0.5% dispersant,
0.5% coalescents, 2% wetting agent, 1% thickening agent, 3% defoamer and 12% deionized water;
Infra-red radiation energy-saving coating 3 is based on weight/mass percentage composition, including following composition: 5% Al doping SiC Yu C doping SiO2's
Compound material, 5% silicon boride, 4% titanium boride, 4% zirconium boride, 3% lanthanum boride, 7% boron carbide, 8% carborundum, 3% yttrium carbide, 3% 2 silicon
Change molybdenum, 5% tungsten silicide, 3% zirconium diboride, 11% silicon oxide, 3% ferrum oxide, 2% copper oxide, 5% manganese oxide, 2% chromium oxide, 2% oxygen
Change cobalt, 1% Kaolin, 2% boron glass powder, 2% bentonite, 4% Ludox, 7% Alumina gel, 1% aluminium dihydrogen phosphate, 1% dispersant and 7%
Deionized water.The mean diameter of infra-red radiation energy-saving coating 3 composition is below 0.5 μm.
Above-mentioned all coating materials are the most prepared according to respective ratio mix homogeneously, are sprayed at stove with brush or machine after preparing
The inside and outside wall of kiln matrix 2.
The thickness of inside holding coating 6 is 7.6mm, the thickness of middle heat insulation coating 7 is 0.2mm, and the thickness of external thermal insulation coating 8 is
0.2mm;The thickness of infra-red radiation energy-saving coating 3 is 1.8mm.
Through test, the high temperature resistant infrared radiating coating of stove inwall of the present embodiment radiance when 1700 DEG C of operating temperatures is
0.94, the thermal conductivity of furnace outer wall combination type heat insulating coating is 0.031 W/ (m K).
Embodiment five
The present embodiment is identical with the basic structure of embodiment one, and difference is:
Inside holding coating 6 is based on weight/mass percentage composition, including following composition: 12% fly ash float, 23% zirconia aerogels,
21% Kaolin, 6% bentonite, 12% sepiolite fibre, 13% zirconium colloidal sol, 0.5% dispersant, 1% coalescents, 0.5% wetting agent,
1% thickening agent, 1% defoamer and 9% deionized water;
Middle heat insulation coating 7 is based on weight/mass percentage composition, including following composition: 32% hollow ceramic microspheres, 9% alumina aerogels,
9% mica powder, 13% bentonite, 4% ceramic fibre, 13% Alumina gel, 1.9% dispersant, 2% coalescents, 1% wetting agent, 0.1% increasing
Thick dose, 1% defoamer and 14% deionized water;
External thermal insulation coating 8 is based on weight/mass percentage composition, including following composition: 35% hollow glass micropearl, 7% silica aerogel,
6% Pulvis Talci, 4% bentonite, 10% quartz fibre, 4% Ludox, 9% aluminium dihydrogen phosphate, 5% waterglass, 3% dispersant, 2% film forming
Auxiliary agent, 2% wetting agent, 2% thickening agent, 1% defoamer and 10% deionized water;
Infra-red radiation energy-saving coating 3 is based on weight/mass percentage composition, including following composition: 7% Al doping SiC Yu C doping SiO2's
Compound material, 2% silicon boride, 3% titanium boride, 3% zirconium boride, 3% lanthanum boride, 6% boron carbide, 9% carborundum, 2% yttrium carbide, 2% 2 silicon
Change molybdenum, 2% tungsten silicide, 1% zirconium diboride, 4% silicon oxide, 3% ferrum oxide, 3% copper oxide, 2% manganese oxide, 2% chromium oxide, 1% oxygen
Change cobalt, 7% Kaolin, 8% boron glass powder, 4% bentonite, 13% Ludox, 2% Alumina gel, 2% aluminium dihydrogen phosphate, 1% dispersant and
8% deionized water.The mean diameter of infra-red radiation energy-saving coating 3 composition is below 0.3 μm.
Above-mentioned all coating materials are the most prepared according to respective ratio mix homogeneously, are sprayed at stove with brush or machine after preparing
The inside and outside wall of kiln matrix 2.
The thickness of inside holding coating 6 is 5.4mm, the thickness of middle heat insulation coating 7 is 10mm, and the thickness of external thermal insulation coating 8 is
7.6mm;The thickness of infra-red radiation energy-saving coating 3 is 0.1mm.
Through test, the high temperature resistant infrared radiating coating of stove inwall of the present embodiment radiance when 1600 DEG C of operating temperatures is
0.86, the thermal conductivity of furnace outer wall combination type heat insulating coating is 0.029W/ (m K).
Embodiment six
The present embodiment is identical with the basic structure of embodiment one, and difference is:
Inside holding coating 6 is based on weight/mass percentage composition, including following composition: 27% fly ash float, 10% zirconia aerogels,
11% Kaolin, 11% bentonite, 7% sepiolite fibre, 15% zirconium colloidal sol, 1% dispersant, 1% coalescents, 1% wetting agent, 1% increasing
Thick dose, 1% defoamer and 14% deionized water;
Middle heat insulation coating 7 is based on weight/mass percentage composition, including following composition: 25% hollow ceramic microspheres, 23% alumina aerogels,
10% mica powder, 8% bentonite, 7% ceramic fibre, 15% Alumina gel, 1% dispersant, 0.5% coalescents, 0.5% wetting agent, 0.5%
Thickening agent, 0.5% defoamer and 9% deionized water;
External thermal insulation coating 8 is based on weight/mass percentage composition, including following composition: 26% hollow glass micropearl, 10% silica aerogel,
17% Pulvis Talci, 0.5% bentonite, 9% quartz fibre, 10% Ludox, 9% aluminium dihydrogen phosphate, 6% waterglass, 3% dispersant, 0.3%
Coalescents, 1% wetting agent, 0.1% thickening agent, 0.1% defoamer and 7% deionized water;
Infra-red radiation energy-saving coating 3 is based on weight/mass percentage composition, including following composition: 3% Al doping SiC Yu C doping SiO2's
Compound material, 3% silicon boride, 4% titanium boride, 3% zirconium boride, 3% lanthanum boride, 5% boron carbide, 13% carborundum, 3% yttrium carbide, 3% 2 silicon
Change molybdenum, 3% tungsten silicide, 5% zirconium diboride, 4% silicon oxide, 5% ferrum oxide, 2% copper oxide, 1% manganese oxide, 3% chromium oxide, 3% oxygen
Change cobalt, 2% Kaolin, 2% boron glass powder, 5% bentonite, 9% Ludox, 5% Alumina gel, 5% aluminium dihydrogen phosphate, 1% dispersant and 5%
Deionized water.The mean diameter of infra-red radiation energy-saving coating 3 composition is below 0.2 μm.
Above-mentioned all coating materials are the most prepared according to respective ratio mix homogeneously, are sprayed at stove with brush or machine after preparing
The inside and outside wall of kiln matrix 2.
The thickness of inside holding coating 6 is 4.4mm, the thickness of middle heat insulation coating 7 is 7.6mm, and the thickness of external thermal insulation coating 8 is
8mm;The thickness of infra-red radiation energy-saving coating 3 is 2.5mm.
Through test, the high temperature resistant infrared radiating coating of stove inwall of the present embodiment radiance when 1600 DEG C of operating temperatures is
0.92, the thermal conductivity of furnace outer wall combination type heat insulating coating is 0.030W/ (m K).
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction;Appoint
What those of ordinary skill in the art, without departing under technical solution of the present invention ambit, may utilize the side of the disclosure above
Technical solution of the present invention is made many possible variations and modification by method and technology contents, or the equivalence being revised as equivalent variations is real
Execute example.Therefore, every content without departing from technical solution of the present invention, according to the technical spirit of the present invention, above example is done
Any simple modification, equivalent, equivalence change and modify, all still fall within technical solution of the present invention protection in the range of.