CN108504850A - A kind of waste-heat recoverer for bell type annealing furnace - Google Patents
A kind of waste-heat recoverer for bell type annealing furnace Download PDFInfo
- Publication number
- CN108504850A CN108504850A CN201810530861.9A CN201810530861A CN108504850A CN 108504850 A CN108504850 A CN 108504850A CN 201810530861 A CN201810530861 A CN 201810530861A CN 108504850 A CN108504850 A CN 108504850A
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- China
- Prior art keywords
- heat
- convection
- transfer portion
- heat transfer
- waste
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-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
- C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The invention discloses a kind of waste-heat recoverers for bell type annealing furnace, need the product annealed to be placed in the accommodation space of annealing furnace internal-lining, waste-heat recoverer includes radiation heat transfer portion and heat convection portion；Radiation heat transfer portion is arranged in the outside of liner, there is the gap flowed for air between radiation heat transfer portion and liner, the bottom and top of liner are respectively arranged with water knockout drum and water collector, and radiation heat transfer portion has the first heat exchanger tube that multiple both ends are separately connected water knockout drum and water collector；The outside in radiation heat transfer portion is arranged in heat convection portion, one heat convection portion has a convection space, convection space is arranged to, its top is connect by tedge with water collector, its bottom is connect by feed pipe with water knockout drum, its internal second heat exchanger tube with connection tedge and feed pipe, gap is connected to by circulating fan with the inside of convection space, so that hot-air flows to convection space.The present invention can make full use of the thermal energy of annealing, achieve energy-saving and emission reduction purposes.
Description
Technical field
The present invention relates to heat energy utilization fields, more particularly to a kind of waste-heat recoverer for bell type annealing furnace.
Background technology
Cold-strip steel needs to anneal to strip into bell type annealing furnace after completing to roll.The mode of annealing is
Metal is heated slowly to about 600~800 DEG C or so of temperature, then keeps enough time, is then cooled to often with Reasonable Speed
Temperature.Annealing purpose is to reduce the hardness of strip, improves its machinability；Eliminate residual stress, stable dimensions, reduce deformation with
Crackle tendency；Crystal grain thinning adjusts tissue, eliminates tissue defects.In annealing process, strip will release a large amount of heat.It is existing
There is this partial heat in technology to be all directly lost in workshop, while causing heat waste, also improve the temperature in workshop,
It is degrading working environment.
Invention content
The technical problem to be solved in the present invention is to provide a kind of waste-heat recoverers for bell type annealing furnace, are saved with reaching
The energy, the purpose for reducing discharge bring good economic benefit and social effect to cut down expenses for enterprise.
In order to solve the above-mentioned technical problem, the technical scheme is that：
A kind of waste-heat recoverer for bell type annealing furnace needs the product annealed to be placed in the accommodation space of annealing furnace internal-lining
In, the waste-heat recoverer includes radiation heat transfer portion and heat convection portion；The radiation heat transfer portion is arranged in the outer of the liner
Side has the gap flowed for air, the bottom and top difference of the liner between the radiation heat transfer portion and the liner
It is provided with water knockout drum and water collector, there are multiple both ends to be separately connected the water knockout drum and the water collector in the radiation heat transfer portion
The first heat exchanger tube；The outside in the radiation heat transfer portion is arranged in the heat convection portion, and a heat convection portion has
One convection space, the convection space are arranged to, and top is connect by tedge with the water collector, and bottom passes through water supply
Pipe is connect with the water knockout drum, internal second heat exchanger tube with the connection tedge and the feed pipe, the gap
It is connected to the inside of the convection space by circulating fan, so that hot-air flows to the convection space.
Preferably, the radiation heat transfer portion is centered around the circumferential direction of the liner, the inner surface in the radiation heat transfer portion, described
The inner surface of water knockout drum and the water collector, the liner outer surface collectively form an enclosure space flowed for air,
The enclosure space is connected to by the circulating fan with the inside of the convection space.
Preferably, second heat exchanger tube is coiled pipe.
Preferably, there are multiple heat convection portions in the outside in the radiation heat transfer portion.
Preferably, the water knockout drum is connect by feed pipe with external water source, and the water collector is by steam outlet pipe and uses heat
Device connects.
Compared with prior art, the beneficial effects of the present invention are：It is fully returned by radiation heat transfer portion and heat convection portion
The heat in annealing process is received, to provide energy, such as acid with thermal process with the hot water or steam generated for other of product
Wash, degreasing, the techniques such as coating, boiler is substituted, to reach final goal that is energy saving, reducing discharge, to be saved for enterprise
Spending, brings good economic benefit and social effect.
Description of the drawings
Some specific embodiments that the invention will be described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic diagram of the waste-heat recoverer for bell type annealing furnace of one embodiment of the invention.
Meaning in figure represented by each symbol is as follows：
1- strips；2- liners；3- radiation heat transfers portion；The first heat exchanger tubes of 4-；5- heat convections portion；6- tedges；7- supplies water
Pipe；8- water knockout drums；9- feed pipes；10- water collectors；11- steam outlet pipes.
Specific implementation mode
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but does not constitute limitation of the invention.In addition, disclosed below
The each embodiment of the present invention in involved technical characteristic can be combined with each other as long as they do not conflict with each other.
It is strip 1 in the present embodiment as shown in Figure 1, needing the product annealed, the receiving for being placed in annealing furnace internal-lining 2 is empty
Between in.The distributed heat of annealing cooling is transmitted to outside by 2 wall of liner.Therefore, 2 wall surface of liner institute use should be heat conduction
The high material of coefficient.The present invention includes mainly radiation heat transfer portion 3 and heat convection portion for the waste-heat recoverer of bell type annealing furnace
5.Wherein, radiation heat transfer portion 3 is arranged in the outside of the liner 2, and heat convection portion 5 is arranged in the outside in radiation heat transfer portion 3.
The bottom and top of liner 2 are respectively arranged with water knockout drum 8 and water collector 10.Water knockout drum 8 passes through feed pipe 9 and outside
Water source connects, for distributing external water source to heat exchanger tube.Water collector 10 is connect by steam outlet pipe 11 with thermal, with generation
Hot water or steam provide the techniques such as energy, such as pickling, degreasing, coating with thermal process for other of product.Radiation heat transfer portion 3
The first heat exchanger tube 4 of the water knockout drum 8 and the water collector 10 is separately connected with multiple both ends.Radiation heat transfer portion 3 and liner 2
Wall surface between there is gap flow for air, mainly pass through the biography of radiation realization heat between radiation heat transfer portion 3 and liner 2
It passs.Water in first heat exchanger tube 4 reaches water collector 10 after the heating.In the embodiment shown in fig. 1, radiation heat transfer portion 3 surrounds
In the circumferential direction of the liner 2, to reach the maximum heat exchange area in radiation heat transfer portion 3.The inner surface in radiation heat transfer portion 3, described point
The inner surface of hydrophone 8 and the water collector 10, the liner 2 to collectively form the closing that one flows for air empty for outer surface
Between.In other embodiments, radiation heat transfer portion 3 is centered around circumferential direction and the top of the liner 2.The outlet position of first heat exchanger tube 4
Center in 3 top of radiation heat transfer portion, so that the first heat exchanger tube 4 has maximum heat exchange area.
The radiation heat transfer portion 3 outside can there are one or multiple heat convection portions 5.Any one convection current is changed
Hot portion 5 all has there are one convection space.The convection space is arranged to, and top is connect by tedge 6 with water collector 10,
Bottom is connect by feed pipe 7 with water knockout drum 8, internal second heat exchanger tube with connection tedge 6 and feed pipe 7.Moreover,
Gap between radiation heat transfer portion 3 and liner 2 is connected to by circulating fan with the inside of convection space, so that hot-air flows
To the convection space, and cool air reflux opposite after heat convection is to gap.In the embodiment shown in fig. 1, convection current is changed
The quantity in hot portion 5 is two.The inner surface in radiation heat transfer portion 3, the inner surface of the water knockout drum 8 and the water collector 10, institute
It states the enclosure space that the outer surface of liner 2 collectively forms to be connected to the inside of convection space by circulating fan, so that heat is empty
Flow of air is to the convection space, and cool air reflux opposite after heat convection is to gap.And in order to increase heat exchange area,
Enhance the mobility of hot-air, the second heat exchanger tube uses coiled pipe.
To sum up, waste-heat recoverer of the invention passes through in radiation heat transfer portion 3 and the fully recycling annealing process of heat convection portion 5
Heat, reduce workshop temperature, improve workshop condition while recycle thermal energy, replace existing boiler to reach the mesh of energy-saving and emission-reduction
's.Waste-heat recoverer can provide energy for other of product with the hot water of generation or steam with thermal process, such as pickling, de-
The techniques such as fat, coating substitute boiler, to reach final goal that is energy saving, reducing discharge, to cut down expenses for enterprise,
Bring good economic benefit and social effect.
Embodiments of the present invention are explained in detail above in association with attached drawing, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (5)
1. a kind of waste-heat recoverer for bell type annealing furnace needs the product annealed to be placed in the accommodation space of annealing furnace internal-lining
In, which is characterized in that the waste-heat recoverer includes radiation heat transfer portion and heat convection portion；The radiation heat transfer portion is arranged in institute
The outside of liner is stated, there is the gap flowed for air, the bottom of the liner between the radiation heat transfer portion and the liner
Be respectively arranged with water knockout drum and water collector with top, the radiation heat transfer portion have multiple both ends be separately connected the water knockout drum and
First heat exchanger tube of the water collector；The outside in the radiation heat transfer portion, a convection current is arranged in the heat convection portion
There is heat exchanging part a convection space, the convection space to be arranged to, and top is connect by tedge with the water collector, bottom
Portion is connect by feed pipe with the water knockout drum, internal to have the second heat exchange for connecting the tedge and the feed pipe
Pipe, the gap are connected to by circulating fan with the inside of the convection space, so that hot-air flows to the convection current sky
Between.
2. a kind of waste-heat recoverer for bell type annealing furnace according to claim 1, which is characterized in that the radiation is changed
Hot portion is centered around the circumferential direction of the liner, the inner surface in the radiation heat transfer portion, the water knockout drum and the water collector it is interior
Surface, the liner outer surface collectively form an enclosure space flowed for air, the enclosure space passes through the cycle
Wind turbine is connected to the inside of the convection space.
3. a kind of waste-heat recoverer for bell type annealing furnace according to claim 2, which is characterized in that described second changes
Heat pipe is coiled pipe.
4. a kind of waste-heat recoverer for bell type annealing furnace according to any one of claim 1-3, which is characterized in that
There are multiple heat convection portions in the outside in the radiation heat transfer portion.
5. a kind of waste-heat recoverer for bell type annealing furnace according to claim 1, which is characterized in that the water knockout drum
It is connect with external water source by feed pipe, the water collector is connect by steam outlet pipe with thermal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810530861.9A CN108504850A (en) | 2018-05-29 | 2018-05-29 | A kind of waste-heat recoverer for bell type annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810530861.9A CN108504850A (en) | 2018-05-29 | 2018-05-29 | A kind of waste-heat recoverer for bell type annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108504850A true CN108504850A (en) | 2018-09-07 |
Family
ID=63402057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810530861.9A Pending CN108504850A (en) | 2018-05-29 | 2018-05-29 | A kind of waste-heat recoverer for bell type annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108504850A (en) |
-
2018
- 2018-05-29 CN CN201810530861.9A patent/CN108504850A/en active Pending
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