CN203518644U - Waste heat utilization device of radiant tube thermal treatment furnace - Google Patents
Waste heat utilization device of radiant tube thermal treatment furnace Download PDFInfo
- Publication number
- CN203518644U CN203518644U CN201320608506.1U CN201320608506U CN203518644U CN 203518644 U CN203518644 U CN 203518644U CN 201320608506 U CN201320608506 U CN 201320608506U CN 203518644 U CN203518644 U CN 203518644U
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- China
- Prior art keywords
- flue gas
- radiant tube
- temperature flue
- gas
- temperature
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000002918 waste heat Substances 0.000 title abstract description 8
- 238000007669 thermal treatment Methods 0.000 title abstract 3
- 239000003546 flue gas Substances 0.000 claims abstract description 64
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 62
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 14
- 239000000779 smoke Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000003517 fume Substances 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003570 air Substances 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
A waste heat utilization device of a radiant tube thermal treatment furnace is characterized in that a normalizing or hardening furnace, a radiant tube, a high-temperature flue gas collecting branch tube, a high-temperature flue gas collecting main tube, a high-temperature flue gas conveying fan, a front smoke exhaust main tube, a nitrogen preheating heat exchanger, a combustion air preheating heat exchanger, a gas preheating heat exchanger and a rear smoke exhaust main tube are sequentially arranged on the waste heat utilization device of the radiant tube thermal treatment furnace. According to the waste heat utilization device, high temperature waste gas exhausted by the normalizing or hardening furnace is fully utilized to preheat nitrogen, air and gas, so that secondary utilization of waste heat is achieved, and heat energy emission is reduced; the temperature of fuel of the normalizing or hardening furnace is increased, the temperature of nitrogen entering the furnace is increased, and production cost is reduced. A smoke vent is not formed in the position, in a workshop, of the radiant tube, and therefore the working environment is improved.
Description
Affiliated technical field
The utility model belongs to iron and steel production equipment, is specifically related to a kind of radiant tube heat-treatment furnace residual heat using device.
Background technology
During iron and steel is produced, some product needed is heat-treated.In Heavy Plate Plant, be generally equipped with non-oxidation radiant tube warm-up mill hearth heat-treated furnace at present and complete normalizing and two kinds of technical process of quenching.Radiant tube heating furnace temperature when high temperature is even, steel plate hot process after roll marks few, become the mainstream configuration of domestic Wide and Thick Slab factory.
The technological temperature of general steel plate quenching and normalizing is: A
c3+ 30～50 ℃, for Heavy Plate Plant product, be 890～930 ℃, therefore the fire box temperature of quenching and normalizing heat-treatment furnace is 890～930 ℃.For meeting the requirement of the technological temperature of quenching and normalizing heat-treatment furnace, in heat-treatment furnace, the many radiant tubes of outfit up and down of roller-way heat.For realizing scale-free heating in stove, at body of heater length direction, evenly in stove, spray into nitrogen, in stove, take radiant heat transfer as main, the medium of burning and flue gas do not enter in stove in radiant tube, and the combustion medium of radiant tube is generally mixed gas or coke-stove gas.Radiant tube has coal gas and combustion air to enter burner combustion, utilizes the rear flue gas of burning from warm-up combustion-supporting air, after flue gas and combustion air heat exchange, by radiant tube exhaust opening, is discharged.At each radiant tube exhaust opening, gas sampling the rim of a bowl is set, the rim of a bowl and radiant tube exhaust opening are open, therefore have nature cold wind to enter.The arm of gas sampling the rim of a bowl is connected with waste gas header road, at total pipeline, waste gas is set and extracts blower fan out, extracts out by chimney and discharge outside factory building top in exhaust gas centralized.Flue-gas temperature in outlet after flue gas after radiant tube burning and combustion air heat exchange is 700～750 ℃, collects waste gas the rim of a bowl place and naturally mixes cold wind to 300 ℃ left and right by open exhaust gas entrance, and the flue gas of discharging after therefore concentrating is below 300 ℃.
The defect of prior art: steel plate hot gas treatment unit consumption is high, Plate Production cost is high; Normalizing, 700～750 ℃ of high-temperature flue gas of glowing furnace are mixed in line dispatching from the factory after cold wind, and the energy fails to make full use of; Each radiant tube exhaust opening and gas sampling the rim of a bowl are open, pollute workshop condition; Normal temperature nitrogen sprays into and in stove, causes burner hearth thermal loss.
Utility model content
The purpose of this utility model is to provide a kind of a kind of radiant tube heat-treatment furnace residual heat using device that overcomes above-mentioned prior art weak point.
The technical solution of the utility model: radiant tube heat-treatment furnace residual heat using device, design arrangement is sequentially followed successively by: normalizing or glowing furnace, radiant tube, high-temperature flue gas is collected arm, and high-temperature flue gas is collected house steward, high-temperature flue gas conveying fan, the front house steward that discharges fume, nitrogen preheating heat exchanger, combustion air preheating heat exchanger, gas preheating heat exchanger, house steward after smoke evacuation.
Normalizing or glowing furnace are heated to steel plate quenching or the normalizing temperature needing, and the steel plate requirement temperature of coming out of the stove is even; In radiant tube, there is burner, the heat that provides normalizing or glowing furnace to need; High-temperature flue gas is collected arm and is directly docked with each radiant tube exhaust opening, and high-temperature flue gas is collected to house steward; High-temperature flue gas is collected after house steward collects arm flue gas and is delivered to high-temperature flue gas conveying fan; High-temperature flue gas conveying fan provides collection flue gas and supplied flue gases that power is provided; High-temperature flue gas carries front house steward that flue gas is delivered to nitrogen preheating heat exchanger place, high-temperature flue gas is through the pre-hot nitrogen of nitrogen preheating heat exchanger, high-temperature flue gas is through combustion air preheating heat exchanger warm-up combustion-supporting air, high-temperature flue gas is through gas preheating heat exchanger preheating gas, flue gas enters the rear house steward of smoke evacuation, after smoke evacuation, house steward is connected flue gas is discharged outside factory building with chimney, and the nitrogen after preheating, air, coal gas are delivered to normalizing or glowing furnace.
Compared with prior art, the utlity model has following advantage: the first, make full use of the high-temp waste gas of normalizing or the discharge of glowing furnace radiant tube to nitrogen, air, gas preheating, realize the utilization of waste heat secondary, reduce heat energy discharge; The second, improve normalizing or glowing furnace fuel temperature, improve into stove nitrogen temperature, reduce production costs; The 3rd, radiant tube without exhaust opening, has improved working environment in workshop.
accompanying drawing and explanation
Accompanying drawing is the radiant tube heat-treatment furnace residual heat using device layout of equipment.
In figure: 1-normalizing or glowing furnace, 2-radiant tube, 3-high-temperature flue gas is collected arm, 4-high-temperature flue gas is collected house steward, 5-high-temperature flue gas conveying fan, and 6-high-temperature flue gas is carried front house steward, 7-nitrogen preheating heat exchanger, 8-combustion air preheating heat exchanger, 9-gas preheating heat exchanger, house steward after 10-smoke evacuation.
The specific embodiment
Below in conjunction with drawings and Examples, utility model is described further.
As shown in drawings, radiant tube heat-treatment furnace residual heat using device apparatus arrangement is sequentially followed successively by: normalizing or glowing furnace 1, radiant tube 2, high-temperature flue gas are collected arm 3, high-temperature flue gas is collected house steward 4, high-temperature flue gas conveying fan 5, the front house steward 6 of high-temperature flue gas conveying, nitrogen preheating heat exchanger 7, combustion air preheating heat exchanger 8, gas preheating heat exchanger 9, the rear house steward 10 of smoke evacuation.
Normalizing or glowing furnace 1 roller-way have many radiant tubes 2 up and down, the exhaust opening of radiant tube 2 is collected arm 3 with high-temperature flue gas and is directly docked, many high-temperature flue gas are collected arm 3 and are connected with high-temperature flue gas collection house steward 4, and high-temperature flue gas is collected house steward 4 and is connected with high-temperature flue gas conveying fan 5; High-temperature flue gas conveying fan 5 carries front house steward 6 to be connected with high-temperature flue gas; High-temperature flue gas is carried on front house steward 6 and is arranged nitrogen preheating heat exchanger 7, combustion air preheating heat exchanger 8, gas preheating heat exchanger 9, and high-temperature flue gas is respectively to nitrogen, combustion air, gas preheating; Gas carries front house steward to be connected with house steward 10 after smoke evacuation through gas preheating heat exchanger 9, and after smoke evacuation, house steward 10 is connected flue gas is discharged outside factory building with outer smoke evacuation chimney.
Operation instruction of the present utility model: utilize the high-temp waste gas that normalizing or glowing furnace radiant tube are discharged to heat tempering steel plate, realize the utilization of waste heat secondary, reduce production costs.Concrete using method is: on normalizing or glowing furnace 1, radiant tube 2 is housed and heats steel plate, high-temperature flue gas is collected arm 3 and directly docked with each radiant tube exhaust opening, and high-temperature flue gas is collected to house steward 4; High-temperature flue gas is collected after house steward 4 collects arm flue gas and is delivered to high-temperature flue gas conveying fan 5; High-temperature flue gas conveying fan 5 provides collection flue gas and supplied flue gases that power is provided; High-temperature flue gas carries front house steward 6 that flue gas is delivered to nitrogen preheating heat exchanger 7 places, and high-temperature flue gas is through the pre-hot nitrogen of nitrogen preheating heat exchanger 7; High-temperature flue gas is through combustion air preheating heat exchanger 8 warm-up combustion-supporting airs; High-temperature flue gas is through gas preheating heat exchanger 9 preheating gas; Flue gas enters the rear house steward 10 of smoke evacuation, and after smoke evacuation, house steward is connected flue gas is discharged outside factory building with chimney.
Nitrogen after preheating, air, coal gas are delivered to normalizing or glowing furnace.Make full use of the high-temp waste gas of normalizing or the discharge of glowing furnace radiant tube to nitrogen, air, gas preheating, realize the utilization of waste heat secondary, reduce heat energy discharge; Improve normalizing or glowing furnace fuel temperature, improve into stove nitrogen temperature, reduce production costs.
Claims (1)
1. radiant tube heat-treatment furnace residual heat using device, it is characterized in that: apparatus arrangement order is normalizing or glowing furnace successively, radiant tube, high-temperature flue gas is collected arm, and high-temperature flue gas is collected house steward, high-temperature flue gas conveying fan, the front house steward that discharges fume, nitrogen preheating heat exchanger, combustion air preheating heat exchanger, gas preheating heat exchanger, house steward after smoke evacuation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608506.1U CN203518644U (en) | 2013-09-30 | 2013-09-30 | Waste heat utilization device of radiant tube thermal treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608506.1U CN203518644U (en) | 2013-09-30 | 2013-09-30 | Waste heat utilization device of radiant tube thermal treatment furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203518644U true CN203518644U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320608506.1U Expired - Lifetime CN203518644U (en) | 2013-09-30 | 2013-09-30 | Waste heat utilization device of radiant tube thermal treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203518644U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534894A (en) * | 2015-01-07 | 2015-04-22 | 中冶华天工程技术有限公司 | Conversion and utilization system of flue gas waste heat resources |
| CN104651593A (en) * | 2014-06-24 | 2015-05-27 | 徐家成 | Device for utilizing afterheat of thermal treatment furnace |
| CN108317854A (en) * | 2018-04-09 | 2018-07-24 | 常州市亿和铝合金焊材有限公司 | A kind of environment-protecting type horizontal holding furnace |
-
2013
- 2013-09-30 CN CN201320608506.1U patent/CN203518644U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104651593A (en) * | 2014-06-24 | 2015-05-27 | 徐家成 | Device for utilizing afterheat of thermal treatment furnace |
| CN104534894A (en) * | 2015-01-07 | 2015-04-22 | 中冶华天工程技术有限公司 | Conversion and utilization system of flue gas waste heat resources |
| CN108317854A (en) * | 2018-04-09 | 2018-07-24 | 常州市亿和铝合金焊材有限公司 | A kind of environment-protecting type horizontal holding furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
|
| CX01 | Expiry of patent term |