CN102679301A - Energy-saving roller-hearth continuous kiln waste heat boiler - Google Patents
Energy-saving roller-hearth continuous kiln waste heat boiler Download PDFInfo
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- CN102679301A CN102679301A CN2012101305243A CN201210130524A CN102679301A CN 102679301 A CN102679301 A CN 102679301A CN 2012101305243 A CN2012101305243 A CN 2012101305243A CN 201210130524 A CN201210130524 A CN 201210130524A CN 102679301 A CN102679301 A CN 102679301A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses an energy-saving roller-hearth continuous kiln waste heat boiler, which comprises a smoke pipe 1, a drum 2, heat exchange tubes 3, down pipes 4 and header pipes 5, wherein the smoke pipe 1 is positioned in the drum 2; the heat exchange tubes 3 have an L shape so as to be close to a steel pipe as much as possible; the lower parts of the heat exchange tubes 3 are respectively connected with the left and right header pipes 5, and the upper parts of the heat exchange tubes 3 are connected with the drum 2; the lower parts of the down pipes 4 are respectively connected with the left and right header pipes 5, and the upper parts of the down pipes 4 are connected with the drum 2; and thermal insulating layers 6 are arranged on the outer sides of the drum 2 and the heat exchange tubes 3 and at the peripheries of the down pipes 4 and the header pipes 5. Two kinds of heat energy, namely high-temperature smoke heat energy and radiating heat energy of the steel pipe, can be simultaneously exchanged into steam to serve as steam for production of the steel pipes and domestic steam; and moreover, the tapping temperature of the steel pipe is reduced, the secondary oxidation loss is reduced, and the outer surface quality of a product is improved.
Description
Technical field
The present invention relates to a kind of heat-treatment furnace, continous way using residual heat from kiln furnace boiler at the bottom of particularly a kind of energy-conservation forming roll.
Background technology
Products such as existing steel pipe, steel plate and band steel; The positive annealing furnace of continous way comprises heating clamber, moist closet and furnace roller at the bottom of the roller that uses in process of production; Heating clamber links to each other with moist closet, and furnace roller is installed in heating clamber and the moist closet through the outer bearing block of furnace wall, is furnace roof above the furnace wall; Be furnace bottom below, flue arranged at the tail end of moist closet.Products such as steel pipe, steel plate and band steel after heating clamber high temperature Fast Heating and moist closet insulation, are directly come out of the stove and in air, are cooled off in roller-hearth continuous annealing furnace, and the high-temperature flue gas in heating clamber and the moist closet is directly discharged through flue.Its weak point is: the temperature when products such as steel pipe, steel plate and band steel are directly come out of the stove after annealing or normalizing up to 800 ℃ about, cause great amount of high-temperature heat energy to be released in the atmosphere, cause the worker laboring environment that just anneals poor; Simultaneously; Products such as steel pipe, steel plate and band steel are just being annealed when coming out of the stove air cooling about 800 ℃; Iron in its superficial layer will carry out chemical reaction and produce secondary oxidation with airborne oxidizing gas (for example oxygen, steam), and behind the product secondary oxidations such as steel pipe, steel plate and band steel, its surface generates the thicker secondary oxidation iron sheet of one deck; Influenced the pickling speed of products such as steel pipe, steel plate and band steel, the consumption of sulfuric acid when having increased pickling; If the secondary oxidation iron sheet is thicker during product annealing such as fished pipe, steel plate and band steel, just not only can causes the loss of steel, but also can reduce the outer surface quality of products such as steel pipe, steel plate and band steel.
In addition, the annealing furnace high-temperature flue gas overwhelming majority of the prior art is to adopt air heat exchanger to carry out UTILIZATION OF VESIDUAL HEAT IN, and air heat exchanger heat exchange weak effect; And can only the high-temperature flue gas about 750 ℃ be reduced to about 500 ℃; Still have a large amount of heat energy not to be fully used in its flue gas, and products such as steel pipe, steel plate and band steel need steam heated in process of production, produce steam through coal-fired (gas) boiler; Need to consume a large amount of energy; This not only had been unfavorable for that enterprise reduced production costs but also wasted the national energy resource, also caused environmental pollution, worsened workman's working condition.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art, and continous way using residual heat from kiln furnace boiler at the bottom of a kind of energy-conservation forming roll is provided, so that high temperature heat and the high-temperature flue gas energy recovery after the product annealing such as steel pipe, steel plate and band steel is produced as steam; Replace producing in the enterprise steam boiler; Thereby be national energy savings, reduce environmental pollution, improve workman's working condition; Reduce the production cost of enterprise, improve economic benefit of enterprises.
Technical scheme of the present invention is: continous way using residual heat from kiln furnace boiler at the bottom of a kind of energy-conservation forming roll, comprise drum, heat-exchange tube, down-comer and collecting box pipe, and water inlet pipe, water level meter pipe and inspection manhole are arranged on the drum; Blow-off pipe is arranged at the bottom; The top of heat-exchange tube and down-comer is connected with drum, and the bottom is connected with left and right sides collecting box pipe respectively, and collection case blow-off pipe is arranged at left and right sides collecting box pipe bottom; There is heat-insulation layer in the outside of drum and heat-exchange tube, and the periphery of down-comer and collecting box pipe has heat-insulation layer.
Technical scheme of the present invention also can be: continous way using residual heat from kiln furnace boiler at the bottom of a kind of energy-conservation forming roll; Comprise smoke pipe, drum, heat-exchange tube, down-comer and collecting box pipe, smoke pipe is positioned at drum, and water inlet pipe, water level meter pipe and inspection manhole are arranged on the drum; Blow-off pipe is arranged at the bottom; The top of heat-exchange tube and down-comer is connected with drum, and the bottom is connected with left and right sides collecting box pipe respectively, and collection case blow-off pipe is arranged at left and right sides collecting box pipe bottom; There is heat-insulation layer in the outside of drum and heat-exchange tube, and the periphery of down-comer and collecting box pipe has heat-insulation layer.
Two rows totally four before and after down-comer divided, two down-comers about front-seat and back row respectively has, and the bottom of left and right sides down-comer is connected with left and right sides collecting box pipe respectively, and top all is connected with drum.
Heat-exchange tube is divided into plurality of rows from front to back, and every row is the six roots of sensation altogether, and wherein the bottom of three heat-exchange tubes is connected with left collecting box pipe, and the bottom of other three heat-exchange tubes is connected with right collecting box pipe, and the top of six roots of sensation heat-exchange tube all is connected with drum.
Heat-exchange tube is shaped as L shaped, so that absorb waste heat near thermal source as much as possible.
Waste heat boiler of the present invention can exchange two kinds of heat energy of radiant heat energy of products such as high-temperature flue gas heat energy and steel pipe, steel plate and band steel simultaneously and be produced as steam; The tapping temperature of products such as steel pipe, steel plate and band steel can be controlled at about 250 ℃; High-temperature flue gas heat energy is most of to be recycled; Make most of recovery of energy consumption heat energy of positive annealing furnace be produced as steam, supply the process steam and the life of products such as steel pipe, steel plate and band steel to use steam, improved the heat recovery rate of stove; Simultaneously, the reduction of product tapping temperatures such as steel pipe, steel plate and band steel has also reduced the secondary oxidation scaling loss, has improved the outer surface quality of product.
The present invention be not only applicable to produce products such as steel pipe, steel plate and band steel positive annealing furnace, also be applicable to the kiln of firing various ceramic products.
Be example to produce steel pipe below, detailed content of the present invention further described in conjunction with the figure and the specific embodiment.
Description of drawings
Fig. 1 has the structural representation of smoke pipe waste heat boiler for the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 does not have the structural representation of smoke pipe waste heat boiler for the present invention;
Fig. 4 is the right view of Fig. 3.
The specific embodiment
Embodiment one:
Like Fig. 1, shown in 2: continous way using residual heat from kiln furnace boiler at the bottom of a kind of energy-conservation forming roll that smoke pipe arranged, comprise smoke pipe 1, drum 2, heat-exchange tube 3, down-comer 4 and collecting box pipe 5, smoke pipe 1 is positioned at drum 2; Water inlet pipe 21, water level meter pipe 22 and inspection manhole 23 are arranged on the drum 2, and blow-off pipe 24 is arranged at the bottom, and being shaped as of heat-exchange tube 3 is L shaped; So that as much as possible near steel pipe; Heat-exchange tube 3 is divided into plurality of rows from front to back, and every row is the six roots of sensation altogether, and wherein the bottom of three heat-exchange tubes 3 is connected with left collecting box pipe 5; The bottom of other three heat-exchange tubes 3 is connected with right collecting box pipe 5, and the top of six roots of sensation heat-exchange tube 3 all is connected with drum 2; 4 fens front and back two of down-comer are arranged totally four, two down-comers 4 about front-seat and back is arranged and respectively had, and the bottom of left and right sides down-comer 4 is connected with left and right sides collecting box pipe 5 respectively, and top all is connected with drum 2; Collection case blow-off pipe 51 is arranged at left and right sides collecting box pipe 5 bottoms, and there is heat-insulation layer 6 in the outside of drum 2 and heat-exchange tube 3, and the periphery of down-comer 4 and collecting box pipe 5 has heat-insulation layer 6.
High-temperature flue gas in heating clamber and the moist closet is discharged through the flue of waste heat boiler tail end after the UTILIZATION OF VESIDUAL HEAT IN through the smoke pipe 1 in the waste heat boiler again; Meanwhile, the steel pipe that comes out from moist closet is on through the waste heat recovery section time, comes out of the stove after the heat of the steel pipe of temperature about up to 800 ℃ is absorbed by the drum 2 of waste heat boiler and heat-exchange tube 3 (tapping temperature can be controlled at about 250 ℃); Water in the drum 2 flows into collecting box pipe 5 through down-comer 4; Water in the collecting box pipe 5 flow back in the drum 2 after in heat-exchange tube 3, absorbing heat and heating up again, and so heat exchange is carried out in circulation; Constantly produce steam; Cooling pull out in the steel pipe's production process pickling process heating usefulness, need not to produce steam through coal-fired (gas) boiler, practice thrift a large amount of energy.
Embodiment two:
Like Fig. 3, shown in 4: continous way using residual heat from kiln furnace boiler at the bottom of a kind of energy-conservation forming roll that does not have a smoke pipe, comprise drum 2, heat-exchange tube 3, down-comer 4 and collecting box pipe 5, water inlet pipe 21, water level meter pipe 22 and inspection manhole 23 are arranged on the drum 2; Blow-off pipe 24 is arranged at the bottom; Being shaped as of heat-exchange tube 3 is L shaped, so that as much as possible near steel pipe, heat-exchange tube 3 is divided into plurality of rows from front to back; Every row is the six roots of sensation altogether; Wherein the bottom of three heat-exchange tubes 3 is connected with left collecting box pipe 5, and the bottom of other three heat-exchange tubes 3 is connected with right collecting box pipe 5, and the top of six roots of sensation heat-exchange tube 3 all is connected with drum 2; 4 fens front and back two of down-comer are arranged totally four, two down-comers 4 about front-seat and back is arranged and respectively had, and the bottom of left and right sides down-comer 4 is connected with left and right sides collecting box pipe 5 respectively, and top all is connected with drum 2; Collection case blow-off pipe 51 is arranged at left and right sides collecting box pipe 5 bottoms, and there is heat-insulation layer 6 in the outside of drum 2 and heat-exchange tube 3, and the periphery of down-comer 4 and collecting box pipe 5 has heat-insulation layer 6; The left and right sides collecting box pipe 5 of heat recovery boiler is located on the furnace wall of waste heat recovery section.
The steel pipe that comes out from moist closet is on through the waste heat recovery section time; The heat of the steel pipe of temperature about up to 800 ℃ is come out of the stove (tapping temperature can be controlled at about 250 ℃) after being absorbed by the drum 2 of waste heat boiler and heat-exchange tube 3, and the water in the drum 2 flow into collecting box pipes 5 through down-comers 4, and the water in the collecting box pipe 5 absorb heat heat-exchange tube 3 in after the intensification; Flow back into again in the drum 2; So heat exchange is carried out in circulation, constantly produces steam, cooling pull out in the steel pipe's production process the pickling process heating use; Need not to produce steam, practice thrift a large amount of energy through coal-fired (gas) boiler.
Claims (9)
1. continous way using residual heat from kiln furnace boiler at the bottom of the energy-conservation forming roll is characterized in that comprising drum, heat-exchange tube, down-comer and collecting box pipe, and water inlet pipe, water level meter pipe and inspection manhole are arranged on the drum; Blow-off pipe is arranged at the bottom; The top of heat-exchange tube and down-comer is connected with drum, and the bottom is connected with left and right sides collecting box pipe respectively, and collection case blow-off pipe is arranged at left and right sides collecting box pipe bottom; There is heat-insulation layer in the outside of drum and heat-exchange tube, and the periphery of down-comer and collecting box pipe has heat-insulation layer.
2. continous way using residual heat from kiln furnace boiler is characterized in that also comprising smoke pipe at the bottom of the energy-conservation forming roll according to claim 1, and smoke pipe is positioned at drum.
3. continous way using residual heat from kiln furnace boiler at the bottom of the energy-conservation forming roll according to claim 1 and 2; It is characterized in that down-comer divides totally four of front and back two rows; Two down-comers about front-seat and back row respectively has, the bottom of left and right sides down-comer is connected with left and right sides collecting box pipe respectively, and top all is connected with drum.
4. continous way using residual heat from kiln furnace boiler at the bottom of the energy-conservation forming roll according to claim 1 and 2; It is characterized in that heat-exchange tube is divided into plurality of rows from front to back; Every row is the six roots of sensation altogether; Wherein the bottom of three heat-exchange tubes is connected with left collecting box pipe, and the bottom of other three heat-exchange tubes is connected with right collecting box pipe, and the top of six roots of sensation heat-exchange tube all is connected with drum.
5. continous way using residual heat from kiln furnace boiler at the bottom of the energy-conservation forming roll according to claim 3; It is characterized in that heat-exchange tube is divided into plurality of rows from front to back; Every row is the six roots of sensation altogether; Wherein the bottom of three heat-exchange tubes is connected with left collecting box pipe, and the bottom of other three heat-exchange tubes is connected with right collecting box pipe, and the top of six roots of sensation heat-exchange tube all is connected with drum.
6. continous way using residual heat from kiln furnace boiler at the bottom of the energy-conservation forming roll according to claim 1 and 2, it is L shaped to it is characterized in that heat-exchange tube is shaped as, so that absorb waste heat near thermal source as much as possible.
7. continous way using residual heat from kiln furnace boiler at the bottom of the energy-conservation forming roll according to claim 3, it is L shaped to it is characterized in that heat-exchange tube is shaped as, so that absorb waste heat near thermal source as much as possible.
8. continous way using residual heat from kiln furnace boiler at the bottom of the energy-conservation forming roll according to claim 4, it is L shaped to it is characterized in that heat-exchange tube is shaped as, so that absorb waste heat near thermal source as much as possible.
9. continous way using residual heat from kiln furnace boiler at the bottom of the energy-conservation forming roll according to claim 5, it is L shaped to it is characterized in that heat-exchange tube is shaped as, so that absorb waste heat near thermal source as much as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101305243A CN102679301A (en) | 2012-04-28 | 2012-04-28 | Energy-saving roller-hearth continuous kiln waste heat boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101305243A CN102679301A (en) | 2012-04-28 | 2012-04-28 | Energy-saving roller-hearth continuous kiln waste heat boiler |
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| Publication Number | Publication Date |
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| CN102679301A true CN102679301A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101305243A Pending CN102679301A (en) | 2012-04-28 | 2012-04-28 | Energy-saving roller-hearth continuous kiln waste heat boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014172898A1 (en) * | 2013-04-26 | 2014-10-30 | 衡阳市丁点儿工业炉节能有限公司 | Energy-saving continuous roller hearth bright normalising and annealing furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174402A (en) * | 1984-02-17 | 1985-09-07 | 株式会社ササクラ | Small-sized heat pipe type once-through boiler |
| CN2757017Y (en) * | 2004-12-03 | 2006-02-08 | 李占民 | High energy saving radiation type single tubular boiler |
| CN2783206Y (en) * | 2005-04-16 | 2006-05-24 | 李焕昌 | Coal boiler with wave beam radiation and focusing reflection heat conduction |
| CN201163151Y (en) * | 2008-01-19 | 2008-12-10 | 焦作煤业(集团)鑫珠春工业有限责任公司 | Residual heat utilization apparatus of gangue brick tunnel kiln |
| CN202691997U (en) * | 2012-04-28 | 2013-01-23 | 衡阳市丁点儿工业炉节能有限公司 | Energy-saving roller-hearth continuous kiln waste heat recovery boiler |
-
2012
- 2012-04-28 CN CN2012101305243A patent/CN102679301A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174402A (en) * | 1984-02-17 | 1985-09-07 | 株式会社ササクラ | Small-sized heat pipe type once-through boiler |
| CN2757017Y (en) * | 2004-12-03 | 2006-02-08 | 李占民 | High energy saving radiation type single tubular boiler |
| CN2783206Y (en) * | 2005-04-16 | 2006-05-24 | 李焕昌 | Coal boiler with wave beam radiation and focusing reflection heat conduction |
| CN201163151Y (en) * | 2008-01-19 | 2008-12-10 | 焦作煤业(集团)鑫珠春工业有限责任公司 | Residual heat utilization apparatus of gangue brick tunnel kiln |
| CN202691997U (en) * | 2012-04-28 | 2013-01-23 | 衡阳市丁点儿工业炉节能有限公司 | Energy-saving roller-hearth continuous kiln waste heat recovery boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014172898A1 (en) * | 2013-04-26 | 2014-10-30 | 衡阳市丁点儿工业炉节能有限公司 | Energy-saving continuous roller hearth bright normalising and annealing furnace |
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Application publication date: 20120919 |