CN202938632U - Energy-saving core rod preheating furnace heat-supply device - Google Patents

Energy-saving core rod preheating furnace heat-supply device Download PDF

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Publication number
CN202938632U
CN202938632U CN2012206503636U CN201220650363U CN202938632U CN 202938632 U CN202938632 U CN 202938632U CN 2012206503636 U CN2012206503636 U CN 2012206503636U CN 201220650363 U CN201220650363 U CN 201220650363U CN 202938632 U CN202938632 U CN 202938632U
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CN
China
Prior art keywords
core rod
air
preheating furnace
furnace
rod preheating
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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 - Fee Related
Application number
CN2012206503636U
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Chinese (zh)
Inventor
杨景烽
李晓
李谦
梁春魁
李维军
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Beris Engineering and Research Corp
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Beris Engineering and Research Corp
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Priority to CN2012206503636U priority Critical patent/CN202938632U/en
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Publication of CN202938632U publication Critical patent/CN202938632U/en
Expired - Fee Related legal-status Critical Current
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The utility model discloses an energy-saving core rod preheating furnace heat-supply device which comprises an air heat exchanger (3) and a mixed air cooler (4). An inlet of the air heat exchanger (3) is communicated with a flue gas outlet of an annular heating furnace (1) and fluid of an annular heating furnace combustion fan (2), an outlet of the air heat exchanger (3) is connected with a hot air pipe (8) and a smoke discharging pipe (7), the hot air pipe (8) is respectively connected with a combustion air inlet of the annular heating furnace (1) and a core rod preheating furnace (5), and the mixed air cooler (4) is arranged on the hot air pipe (8) connected with the core rod preheating furnace (5). The production requirements can be met only by utilizing part of waste heat of high-temperature flue gas, a furnace body and pipes are simple, one-time investment is small, surplus waste gas is not generated, low-altitude discharge can be achieved, the influence on production working conditions of the annular heating furnace is small, and automatic control can be achieved to the largest extent.

Description

A kind of energy-conservation core rod preheating furnace heating plant
Technical field
The utility model relates to a kind of core rod preheating furnace heating plant, relates in particular to a kind of energy-saving core rod preheating furnace heating plant.
Background technology
When pipe mill replacement of products with new ones specification, one group of new plug front needs of coming into operation could be dropped into rolling through preheating, need to carry out dehydrogenation after chromate treatment of core rod, need after heating, aligning to be annealed heat treatment before plug aligning, so core rod preheating furnace there is extremely important effect in whole tube rolling production.Therefore plug heating process characteristics are discontinuous cyclings, and furnace temperature is low, the Control for Kiln Temperature required precision is strict, require that core rod preheating furnace must be equipped with flexibly, the furnace atmosphere of temperature control system and low thermal inertia fast and accurately.
Current domestic core rod preheating furnace has several modes such as electrical heating, rotary heating furnace flue gas and various gas heatings on heat-supplying mode.
Adopt the electric heater heat supply to have the advantages such as easy temperature control system, operating condition is good, pollution-free, converter life is long, shortcoming is once to invest with the production run cost highlyer, and electric heating element easily damages.
Adopt rotary heating furnace flue gas plug easily the annular-heating furnace pressure to be exerted an influence, when annular-heating furnace output, exhaust gas volumn, flue-gas temperature change, the core rod preheating furnace temperature is wayward, when rotary heating furnace stops production, to affect the use of core rod preheating furnace, disturb rhythm of production.If rotary heating furnace fuel does not belong to clean fuel, the impurity content in flue gas can be higher, affects mandrel surface fineness, makes troubles directly to follow-up graphite coating.And core rod preheating furnace completes after heat exchange for environmental requirement, flue gas is low-altitude discharged directly, dynamic system of pipeline is required complicated.
Although it is ripe that the mode of gas heating has been tending towards, but Comparatively speaking, the difficult point that gas heating has existed the interior temperature homogeneity of stove and temperature accuracy to control will have supporting combustion control system simultaneously, and disposable input and later maintenance expense all increase greatly.And produce a large amount of fume emissions, and causing environmental pollution, energy waste, be not suitable for batch production.
Summary of the invention
The utility model proposes a kind of shortcoming of avoiding above-mentioned several traditional core rod preheating furnace heating plants, can meet again the energy-saving core rod preheating furnace heating plant of the actual applying working condition of plug simultaneously.
The concrete technical scheme of a kind of energy-conservation core rod preheating furnace heating plant of the present utility model is:
A kind of energy-conservation core rod preheating furnace heating plant, comprise air heat exchanger and mix air-cooler, the entrance of air heat exchanger is communicated with the exhanst gas outlet of rotary heating furnace and rotary heating furnace combustion fan fluid, the outlet of air heat exchanger and hot-air duct and smoke discharging pipe join, hot-air duct joins with combustion air entrance and the core rod preheating furnace of rotary heating furnace respectively, mixes air-cooler and is arranged on the hot-air duct joined with core rod preheating furnace.
Further, the end of the hot-air duct joined with core rod preheating furnace is provided with the hot-air jet pipe, and the hot-air jet pipe is evenly arranged in the body of heater both sides of core rod preheating furnace.
Further, be arranged on the upper surface of the hot-air jet pipe of core rod preheating furnace body of heater both sides higher than the chassis of core rod preheating furnace inside, and lower than heated plug.
Further, the body of heater top of core rod preheating furnace is provided with exhaust outlet.
Further, the smoke discharging pipe joined with the outlet of air heat exchanger is connected with chimney.
Energy-conservation core rod preheating furnace heating plant of the present utility model, when meeting technological requirement, is compared with electrically heated mode, has an one-time investment low, and maintenance cost is low, the advantage of energy-conserving and environment-protective; Compare with the gas heating mode, do not have gas leakage, blast, the shortcoming of smoke emissioning pollution, investment and maintenance cost are also much lower; Compare with the mode of the direct preheating of flue gas, the operating mode impact of rotary heating furnace is wanted to little many.
In addition, energy-conservation core rod preheating furnace heating plant of the present utility model has effectively been avoided the deficiency of existing core rod preheating furnace heating plant, hot air temperature can be preheating to 400 ~ 450 degree, can at short notice plug be preheating to the temperature of technological requirement fully, while pipeline control system simple and flexible, easily be automated control, after air heat exchanger, the changes in flow rate of hot-air does not exert an influence to the rotary heating furnace furnace pressure, can make the rotary heating furnace steady operation, the hot-air of the complete plug of preheating can be realized low-altitude discharged, does not have the problem of environmental pollution.
The accompanying drawing explanation
The process chart that Fig. 1 is energy-conservation core rod preheating furnace heating plant of the present utility model;
The structural representation that Fig. 2 is the core rod preheating furnace in the utility model.
The specific embodiment
In order better to understand the purpose of this utility model, structure and function, below in conjunction with accompanying drawing, a kind of energy-conservation core rod preheating furnace heating plant of the present utility model is done to further detailed description.
As shown in Figure 1, energy-conservation core rod preheating furnace heating plant of the present utility model comprises air heat exchanger 3 and mixes air-cooler 4, wherein, the entrance of air heat exchanger 3 is communicated with exhanst gas outlet and rotary heating furnace combustion fan 2 fluids of rotary heating furnace 1, and the outlet of air heat exchanger 3 is joined with hot-air duct 8 and smoke discharging pipe 7.
Rotary heating furnace 1 produces high-temperature flue gas, the flue joined through the exhanst gas outlet with rotary heating furnace 1 arrives air heat exchanger 3, and high-temperature flue gas carries out heat exchange with the cold air that enters air heat exchanger 3 from rotary heating furnace combustion fan 2 in air heat exchanger 3.After heat exchange, from the temperature of the high-temperature flue gas of rotary heating furnace 1, descend, the smoke discharging pipe 7 through joining with air heat exchanger 3 outlets enters chimney 6, enters atmosphere.From the cold air of rotary heating furnace combustion fan 2, by the high-temperature flue gas preheating, temperature rises to 400 ~ 450 degree, becomes hot-air, and enters hot-air duct 8.
Referring to Fig. 1, hot-air duct 8 joins with combustion air entrance and the core rod preheating furnace 5 of rotary heating furnace 1 respectively, the most of combustion air as rotary heating furnace 1 of the hot-air of discharging from air heat exchanger 3, only have fraction to arrive core rod preheating furnace 5, for the plug preheating.In addition, on the hot-air duct 8 joined with core rod preheating furnace 5, also be provided with and mix air-cooler 4, to realize hot-air, enter the adjustment of stokehold.
As shown in Figure 2, the end of the hot-air duct 8 joined with core rod preheating furnace 5 is provided with hot-air jet pipe 9, hot-air jet pipe 9 is evenly arranged in the body of heater both sides of core rod preheating furnace 5, for sending into core rod preheating furnace 5 from the hot-air of mixing after cold wind of hot-air duct 8, in order to be plug 11 heating, make the plug temperature reach technological requirement temperature (80 ~ 120 ℃).In addition, for reaching better pre-heat effect, the location optimization of the hot-air jet pipe 9 in the utility model is higher than the position of chassis 10 upper surfaces in core rod preheating furnace 5, and lower than the position of heated plug 11.
Further, because the stove endogenous pyrogen is the air through heat exchange, not the flue gas of burning, so direct low-altitude discharged.For example, in the present embodiment, the body of heater top of core rod preheating furnace 5 is provided with exhaust outlet 12, and the exhaust outlet 12 that the hot blast bloated can arrange on furnace roof is directly discharged.
With respect to traditional core rod preheating furnace technique, energy-conservation core rod preheating furnace heating plant of the present utility model has only utilized the part of waste heat of high-temperature flue gas just to meet production requirement, energy-conserving and environment-protective, stove body and pipeline are relatively simple, and one-time investment is little, can not produce unnecessary waste gas, can realize low-altitude discharged, furnace atmosphere is easy to control, trickle on the impact of rotary heating furnace production status, can at utmost realize automation control.
Abovely by specific embodiment, the utility model is further described; but it should be understood that; here concrete description; should not be construed as the restriction to essence of the present utility model and scope; the one of ordinary skilled in the art, reading the various modifications of after this specification, above-described embodiment being made, belongs to the scope that the utility model is protected.

Claims (5)

1. an energy-conservation core rod preheating furnace heating plant, it is characterized in that, comprise air heat exchanger (3) and mix air-cooler (4), the entrance of air heat exchanger (3) is communicated with exhanst gas outlet and rotary heating furnace combustion fan (2) fluid of rotary heating furnace (1), the outlet of air heat exchanger (3) is joined with hot-air duct (8) and smoke discharging pipe (7), hot-air duct (8) joins with combustion air entrance and the core rod preheating furnace (5) of rotary heating furnace (1) respectively, mixing air-cooler (4) is arranged on the hot-air duct (8) joined with core rod preheating furnace (5).
2. energy-conservation core rod preheating furnace heating plant according to claim 1, it is characterized in that, the end of the hot-air duct (8) joined with core rod preheating furnace (5) is provided with hot-air jet pipe (9), and hot-air jet pipe (9) is evenly arranged in the body of heater both sides of core rod preheating furnace (5).
3. energy-conservation core rod preheating furnace heating plant according to claim 2, it is characterized in that, be arranged on the upper surface of hot-air jet pipe (9) inner chassis (10) higher than core rod preheating furnace (5) of core rod preheating furnace (5) body of heater both sides, and lower than heated plug (11).
4. energy-conservation core rod preheating furnace heating plant according to claim 3, is characterized in that, the body of heater top of core rod preheating furnace (5) is provided with exhaust outlet (12).
5. energy-conservation core rod preheating furnace heating plant according to claim 1, is characterized in that, the smoke discharging pipe (7) joined with the outlet of air heat exchanger (3) is connected with chimney (6).
CN2012206503636U 2012-11-30 2012-11-30 Energy-saving core rod preheating furnace heat-supply device Expired - Fee Related CN202938632U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012206503636U CN202938632U (en) 2012-11-30 2012-11-30 Energy-saving core rod preheating furnace heat-supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012206503636U CN202938632U (en) 2012-11-30 2012-11-30 Energy-saving core rod preheating furnace heat-supply device

Publications (1)

Publication Number Publication Date
CN202938632U true CN202938632U (en) 2013-05-15

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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103540732A (en) * 2013-10-24 2014-01-29 中冶南方(武汉)威仕工业炉有限公司 Device and method for recycling flue gas waste heat of radiant-tube roller-hearth heat treatment furnace
CN108817092A (en) * 2018-07-12 2018-11-16 江苏常宝普莱森钢管有限公司 A kind of process and its device of plug soaking

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103540732A (en) * 2013-10-24 2014-01-29 中冶南方(武汉)威仕工业炉有限公司 Device and method for recycling flue gas waste heat of radiant-tube roller-hearth heat treatment furnace
CN108817092A (en) * 2018-07-12 2018-11-16 江苏常宝普莱森钢管有限公司 A kind of process and its device of plug soaking
CN108817092B (en) * 2018-07-12 2020-04-07 江苏常宝普莱森钢管有限公司 Process method and device for core rod soaking

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CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130515

Termination date: 20171130