CN103604297B - Regenerative industrial furnace and convection radiation wall thereof - Google Patents
Regenerative industrial furnace and convection radiation wall thereof Download PDFInfo
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- CN103604297B CN103604297B CN201310603555.0A CN201310603555A CN103604297B CN 103604297 B CN103604297 B CN 103604297B CN 201310603555 A CN201310603555 A CN 201310603555A CN 103604297 B CN103604297 B CN 103604297B
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Abstract
The invention relates to a regenerative industrial furnace and a convection radiation wall thereof. The convection radiation wall made of a high-temperature-resistant material is located between two-side furnace mouths and comprises hill-type protruding peaks, valleys among the peaks, a foothill below the valleys and a base below the foothill. The peaks have height and width capable of blocking direct airflow between the two-side furnace mouths, more than two hemispheres are regularly distributed on wall surfaces of the two-side furnace mouths face to face on two sides of the convection radiation wall, the diameter and height of each hemisphere is 15-50mm, and spacing between peaks of the hemispheres is 1-2 times the diameter of each hemisphere which accounts for 35-80% of the wall surface per unit. By the convection radiation wall made of a wall structure and the material which can improve heat transfer effect of convention radiation, convection and radiation heat transfer of high-temperature furnace gas in the furnace can be increased, media mixing and flue gas flow in the furnace can be improved, heating uniformity of workpieces can be improved, heating energy consumption can be lowered, and heat efficiency of a hearth can be improved.
Description
Technical field
The present invention relates to heat-accumulating industrial furnace and equipment, more particularly, the invention particularly relates to the flow-disturbing in a kind of heat-accumulating industrial furnace and stove thereof and heat-transfer equipment.
Background technology
At present, heat-accumulating industrial furnace be the regenerator utilizing both sides external come warm-up combustion-supporting air or simultaneously preheating gas fuel to realize the Novel industrial kiln of high-temperature air combustion promoter.Heat-accumulating industrial furnace kiln generally adopts the smoke evacuation of clearance-type furnace side, pulsed burning, therefore, easily produces furnace pressure fluctuation; Meanwhile, due to the breaking of heat storage in the different regenerator that is in operation, harden degree varies, thus impact smoke evacuation resistance and blast change, so that the resistance of the different gas channel in both sides is also uneven; Therefore, high-temperature furnace gas in heat-accumulating industrial furnace not mainly traditional heating stove along the skewness in furnace superintendent direction, but simultaneously also along the pressure of stove cross direction also in uneven distribution, increase from fire door furnace pressure fluctuation from the near to the remote, these cause furnace flame and high-temperature furnace gas skewness all further.
At present, due to above reason, all there are the following problems for most of recuperative heater namely: fuel and combustion air mix bad, combustion medium and high-temperature furnace gas are directly taken away by opposite smoke evacuation fire door, abundant release heat is not had on flame is multi-direction in stove, through thermal testing, in flue gas, there are higher combustible component and oxygen to exist simultaneously.Show aborning: one is that energy consumption is high, and two is that in stove, workpiece heat is uneven.
Summary of the invention
For the above-mentioned shortcoming of prior art, the object of the invention is to provide a kind of heat-accumulating industrial furnace convection radiation wall and device, its tool has the following advantages: adopt the wall body structure and material that improve convection current radiant heat transfer effect, convection current and the radiant heat transfer of furnace high-temperature furnace gas can be increased, thus improve medium mixing and flow of flue gas in stove, improve heated parts uniformity, reduce heating energy consumption, improve the burner hearth thermal efficiency.
For this reason, one of technical solution of the present invention is a kind of heat-accumulating industrial furnace convection radiation wall, it is located at both sides and respectively has more than 2 fire doors and in the corresponding one by one heat-accumulating industrial furnace of both sides fire door, and described convection radiation wall is made up of high temperature resistant material, it is between the fire door of both sides, and it comprises the mountain peak of chevron projection, the foot of the hill below peak-to-peak mountain valley, mountain, mountain valley, the base portion below the foot of the hill; Described mountain peak has the height and width that intercept straight-through air-flow between the fire door of both sides, except base portion, on the metope of both sides fire door faced by convection radiation wall both sides, all rule is distributed with the hemisphere of more than 2, hemispheroidal diameter and be highly 15-50mm, spacing between hemisphere summit is 1-2 times of sphere diameter, and hemisphere ratio shared by unit metope is 35-80%.
By the experiment of a large amount of novelty, high temperature resistant material convection radiation wall of the present invention takes the metope in the face of both sides fire door can intercept height/wide structure, in addition the characteristic diameter of straight-through air-flow and the novelty flow-disturbing hemisphere of height between the fire door of both sides, thus can very simple structure improve, improve the heat-transfer effect of convection current radiation, the convection current of high-temperature furnace gas in stove and radiant heat transfer can be increased, thus effectively improve inner flue gas of the stove mobility and medium mixing uniformity, improve the heating uniformity of workpiece, reduce heating energy consumption, improve the burner hearth thermal efficiency.
For the flow-disturbing of the convection radiation wall structure that improves further, heat transfer, radiation effect, convection radiation wall of the present invention comprises following configuration aspects and improves:
Described convection radiation wall is located at the middle part that between heat-accumulating industrial furnace 2 side, stove is wide; The edge, highest and lowest of the aspect ratio both sides fire door on described mountain peak all exceeds 80-120mm, the width on described mountain peak than the most left of both sides fire door and rightmost edges all wide go out 80-120mm.
Whole body of wall height is 1.5-3.0 times of described base portion height.
For the flow-disturbing of the convection radiation wall structure that improves further, heat transfer, radiation effect, convection radiation wall of the present invention comprises the improvement of following material and configuration aspects:
Described hemispheroidal material is mullite, Al in its component
2o
3weight rate is not less than 56%.
In the central wall body thickness of the convection radiation wall of the spacing between bottom the hemisphere on the metope of both sides for 100-900mm.
The material of described center body of wall comprises high-alumina brick, Al in high-alumina brick component
2o
3weight rate is not less than 48%.
Described hemisphere surface has also sintered high radiant rate black matrix coating, and it comprises the component of following weight rate meter: SiC:45% ~ 65%, ZrO
2: 10% ~ 15%, SiO
2: 10% ~ 25%, silicic acid anhydride 3% ~ 5%, sodium metasilicate 10% ~ 20%.
The thickness of described black matrix coating is 1.5-3.5mm.
Above-mentioned mullite material, high-alumina brick material meet GB/T2988-2012, ASTM-AM28 regulation.
Correspondingly, another technical solution of the present invention is a kind of heat-accumulating industrial furnace adopting heat-accumulating industrial furnace convection radiation wall described above, heat-accumulating industrial furnace comprises body of heater front end, body of heater rear end, furnace roof, furnace bottom, respectively has the both sides of more than 2 fire doors, the fire door of both sides is corresponding one by one, and described convection radiation wall is made up of high temperature resistant material, it is between the fire door of both sides, and it comprises the mountain peak of chevron projection, the foot of the hill below peak-to-peak mountain valley, mountain, mountain valley, the base portion below the foot of the hill; Described mountain peak has the height and width that intercept straight-through air-flow between the fire door of both sides, except base portion, on the metope of both sides fire door faced by convection radiation wall both sides, all rule is distributed with the hemisphere of more than 2, hemispheroidal diameter and be highly 15-50mm, spacing between hemisphere summit is 1-2 times of sphere diameter, and hemisphere ratio shared by unit metope is 35-80%.
By the experiment of a large amount of novelty, heat-accumulating industrial furnace of the present invention adopts above-mentioned high temperature resistant material convection radiation wall, this convection radiation wall takes the metope in the face of both sides fire door can intercept the height/wide structure of straight-through air-flow between the fire door of both sides, in addition diameter and highly special hemisphere turbulence construction, thus can very simple structure improve, improve the heat-transfer effect of convection current radiation, increase convection current and the radiant heat transfer of heat-accumulating industrial furnace furnace high-temperature furnace gas of the present invention, thus effectively improve inner flue gas of the stove mobility and medium mixing uniformity, improve the heating uniformity of workpiece, reduce heating energy consumption, improve the burner hearth thermal efficiency.
For promoting the UTILIZATION OF VESIDUAL HEAT IN of stove further, improve flow-disturbing, heat transfer, radiation effect in stove, Ben Mingfa heat-accumulating industrial furnace comprises the improvement of following convection radiation wall material and configuration aspects simultaneously:
The fire door of described both sides is all connected with waste heat regenerator; Described convection radiation wall is located at the middle part that between heat-accumulating industrial furnace 2 side, stove is wide; The edge, highest and lowest of the aspect ratio both sides fire door on described mountain peak all exceeds 80-120mm, the width on described mountain peak than the most left of both sides fire door and rightmost edges all wide go out 80-120mm; Described hemispheroidal material is mullite, Al in its component
2o
3weight rate is not less than 56%; Described hemisphere surface has also sintered high radiant rate black matrix coating, and it comprises the component of following weight rate meter: SiC:45% ~ 65%, ZrO
2: 10% ~ 15%, SiO
2: 10% ~ 25%, silicic acid anhydride 3% ~ 5%, sodium metasilicate 10% ~ 20%.
Trial production shows: convection radiation wall of the present invention and heat-accumulating industrial furnace, burner hearth thermal efficiency 5-10% can be improved, reduce the stove unit consumption more than 5% of steel rolling heating, improve the quality of hot-working workpiece in stove, reduce workpiece burn out rate to 0.1-0.5%, reduce the heat time 5% of workpiece in stove; Thus enhance productivity and economic benefit comprehensively.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structure schematic front view of heat-accumulating industrial furnace of the present invention and convection radiation wall embodiment.
Fig. 2 is the schematic side view of Fig. 1.
Fig. 3 is the broken section schematic perspective view of Fig. 1.
Fig. 4 is the schematic perspective view of convection radiation wall embodiment partial structurtes of the present invention.
Fig. 5 is the physical dimension schematic diagram of convection radiation wall embodiment of the present invention.
Fig. 6 is the schematic side view of Fig. 5.
Detailed description of the invention
As Fig. 1-6, shown in be respectively heat-accumulating industrial furnace of the present invention and and the structural representation of convection radiation wall embodiment different visual angles.This heat-accumulating industrial furnace embodiment comprises body of heater front end 11, body of heater rear end 12, furnace roof 13, furnace bottom 14, respectively has the both sides of 8 fire doors 15, and the fire door of both sides is corresponding one by one, and the fire door of described both sides is all connected with waste heat regenerator 16; The middle part that stove is wide between heat-accumulating industrial furnace 2 side is provided with convection radiation wall 20; Camber line in figure and straight arrows represent multiple air flow and thermal-radiating direction.
Described convection radiation wall 20 is made up of high temperature resistant material, and it is located at both sides and respectively has more than 2 fire doors and the wide middle part of stove of the corresponding one by one heat-accumulating industrial furnace of both sides fire door; It is between both sides fire door 15, and it comprises the mountain peak 21 of chevron projection, the mountain valley 22 between mountain peak 21, the foot of the hill 23 in mountain valley less than 22, the base portion 24 at the foot of the hill less than 23; Described mountain peak 21 has the height H 3 and width L1 that intercept straight-through air-flow between both sides fire door 15, the width in mountain valley 22 is L2, except base portion 24, on the metope of both sides fire door 15 faced by convection radiation wall 20 both sides, all rule is distributed with the hemisphere 30 of more than 2, the diameter of hemisphere 30 and be highly 15-50mm, spacing between hemisphere 30 summit is 1-2 times of sphere diameter, and hemisphere 30 ratio shared by unit metope is 35-80%.The material of described hemisphere 30 is mullite, Al in its component
2o
3weight rate is not less than 56%.
The height H 3 on described mountain peak all exceeds 80-120mm than the edge, highest and lowest of both sides fire door 15, the width L1 on described mountain peak than the most left of both sides fire door 15 and rightmost edges all wide go out 80-120mm.
Whole body of wall height H 1+H2+H3 is 1.5-3.0 times of described base portion height H 1.
In the central wall body thickness b1 of the convection radiation wall of the spacing between bottom the hemisphere 30 on the metope of both sides for 100-900mm.
The material of described center body of wall comprises the high-alumina brick at middle part 25, Al in high-alumina brick component
2o
3weight rate is not less than 48%.
Described hemisphere 30 surface also sinters the high radiant rate black matrix coating that thickness is 1.5-3.5mm, and it comprises the component of following weight rate meter: SiC:45% ~ 65%, ZrO
2: 10% ~ 15%, SiO
2: 10% ~ 25%, silicic acid anhydride 3% ~ 5%, sodium metasilicate 10% ~ 20%.
Claims (10)
1. a heat-accumulating industrial furnace convection radiation wall, it is located at both sides and respectively has more than 2 fire doors and in the corresponding one by one heat-accumulating industrial furnace of both sides fire door, it is characterized in that: described convection radiation wall is made up of high temperature resistant material, it is between the fire door of both sides, and it comprises the mountain peak of chevron projection, the foot of the hill below peak-to-peak mountain valley, mountain, mountain valley, the base portion below the foot of the hill; Described mountain peak has the height and width that intercept straight-through air-flow between the fire door of both sides, except base portion, on the metope of both sides fire door faced by convection radiation wall both sides, all rule is distributed with the hemisphere of more than 2, hemispheroidal diameter and be highly 15-50mm, spacing between hemisphere summit is 1-2 times of sphere diameter, and hemisphere ratio shared by unit metope is 35-80%.
2. heat-accumulating industrial furnace convection radiation wall as claimed in claim 1, is characterized in that: described convection radiation wall is located at the middle part that between heat-accumulating industrial furnace 2 side, stove is wide; The edge, highest and lowest of the aspect ratio both sides fire door on described mountain peak all exceeds 80-120mm, the width on described mountain peak than the most left of both sides fire door and rightmost edges all wide go out 80-120mm.
3. heat-accumulating industrial furnace convection radiation wall as claimed in claim 1, is characterized in that: whole body of wall height be the 1.5-3.0 of described base portion height doubly.
4. heat-accumulating industrial furnace convection radiation wall as claimed in claim 1, is characterized in that: described hemispheroidal material is mullite, Al in its component
2o
3weight rate is not less than 56%.
5. heat-accumulating industrial furnace convection radiation wall as claimed in claim 1, is characterized in that: in the central wall body thickness of the convection radiation wall of the spacing between bottom the hemisphere on the metope of both sides for 100-900mm.
6. heat-accumulating industrial furnace convection radiation wall as claimed in claim 5, is characterized in that: the material of described center body of wall comprises high-alumina brick, Al in high-alumina brick component
2o
3weight rate is not less than 48%.
7. heat-accumulating industrial furnace convection radiation wall as claimed in claim 1, it is characterized in that: described hemisphere surface has also sintered high radiant rate black matrix coating, it comprises the component of following weight rate meter: SiC:45% ~ 65%, ZrO
2: 10% ~ 15%, SiO
2: 10% ~ 25%, silicic acid anhydride 3% ~ 5%, sodium metasilicate 10% ~ 20%.
8. heat-accumulating industrial furnace convection radiation wall as claimed in claim 7, is characterized in that: the thickness of described black matrix coating is 1.5-3.5mm.
9. one kind adopts the heat-accumulating industrial furnace of heat-accumulating industrial furnace convection radiation wall as described in one of claim 1-8, heat-accumulating industrial furnace comprises body of heater front end, body of heater rear end, furnace roof, furnace bottom, respectively has the both sides of more than 2 fire doors, the fire door of both sides is corresponding one by one, it is characterized in that: described convection radiation wall is made up of high temperature resistant material, it is between the fire door of both sides, and it comprises the mountain peak of chevron projection, the foot of the hill below peak-to-peak mountain valley, mountain, mountain valley, the base portion below the foot of the hill; Described mountain peak has the height and width that intercept straight-through air-flow between the fire door of both sides, except base portion, on the metope of both sides fire door faced by convection radiation wall both sides, all rule is distributed with the hemisphere of more than 2, hemispheroidal diameter and be highly 15-50mm, spacing between hemisphere summit is 1-2 times of sphere diameter, and hemisphere ratio shared by unit metope is 35-80%.
10. heat-accumulating industrial furnace as claimed in claim 9, is characterized in that: the fire door of described both sides is all connected with waste heat regenerator; Described convection radiation wall is located at the middle part that between heat-accumulating industrial furnace 2 side, stove is wide; The edge, highest and lowest of the aspect ratio both sides fire door on described mountain peak all exceeds 80-120mm, the width on described mountain peak than the most left of both sides fire door and rightmost edges all wide go out 80-120mm; Described hemispheroidal material is mullite, Al in its component
2o
3weight rate is not less than 56%; Described hemisphere surface has also sintered high radiant rate black matrix coating, and it comprises the component of following weight rate meter: SiC:45% ~ 65%, ZrO
2: 10% ~ 15%, SiO
2: 10% ~ 25%, silicic acid anhydride 3% ~ 5%, sodium metasilicate 10% ~ 20%.
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|---|---|---|---|
| CN201310603555.0A CN103604297B (en) | 2013-11-25 | 2013-11-25 | Regenerative industrial furnace and convection radiation wall thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310603555.0A CN103604297B (en) | 2013-11-25 | 2013-11-25 | Regenerative industrial furnace and convection radiation wall thereof |
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| CN103604297A CN103604297A (en) | 2014-02-26 |
| CN103604297B true CN103604297B (en) | 2015-04-29 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2299291Y (en) * | 1997-03-19 | 1998-12-02 | 葛世名 | High infrared continuous type radiation furnace |
| JP2005207663A (en) * | 2004-01-22 | 2005-08-04 | Fuji Electric Systems Co Ltd | Induction heating type dry distillation furnace |
| CN201032382Y (en) * | 2007-04-26 | 2008-03-05 | 武汉钢铁(集团)公司 | Plate-type ceramic heat accumulator |
| CN202118953U (en) * | 2011-05-25 | 2012-01-18 | 浙江工业大学 | Solid fuel energy-saving environmentally-friendly fireplace |
| CN103388864A (en) * | 2013-08-20 | 2013-11-13 | 孙永强 | Efficient high-strength radiating plate |
| CN203572224U (en) * | 2013-11-25 | 2014-04-30 | 宝钢集团广东韶关钢铁有限公司 | Convection radiation wall for heat accumulating type industrial furnace and heat accumulating type industrial furnace |
-
2013
- 2013-11-25 CN CN201310603555.0A patent/CN103604297B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2299291Y (en) * | 1997-03-19 | 1998-12-02 | 葛世名 | High infrared continuous type radiation furnace |
| JP2005207663A (en) * | 2004-01-22 | 2005-08-04 | Fuji Electric Systems Co Ltd | Induction heating type dry distillation furnace |
| CN201032382Y (en) * | 2007-04-26 | 2008-03-05 | 武汉钢铁(集团)公司 | Plate-type ceramic heat accumulator |
| CN202118953U (en) * | 2011-05-25 | 2012-01-18 | 浙江工业大学 | Solid fuel energy-saving environmentally-friendly fireplace |
| CN103388864A (en) * | 2013-08-20 | 2013-11-13 | 孙永强 | Efficient high-strength radiating plate |
| CN203572224U (en) * | 2013-11-25 | 2014-04-30 | 宝钢集团广东韶关钢铁有限公司 | Convection radiation wall for heat accumulating type industrial furnace and heat accumulating type industrial furnace |
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