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CN2354091Y - Hot-blast cupola - Google Patents

Hot-blast cupola Download PDF

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Publication number
CN2354091Y
CN2354091Y CN 98236314 CN98236314U CN2354091Y CN 2354091 Y CN2354091 Y CN 2354091Y CN 98236314 CN98236314 CN 98236314 CN 98236314 U CN98236314 U CN 98236314U CN 2354091 Y CN2354091 Y CN 2354091Y
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CN
China
Prior art keywords
heat exchanger
cupola
heat exchange
layer
blast
Prior art date
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
CN 98236314
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Chinese (zh)
Inventor
陈海涛
何水兵
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Individual
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Individual
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Publication date
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Priority to CN 98236314 priority Critical patent/CN2354091Y/en
Application granted granted Critical
Publication of CN2354091Y publication Critical patent/CN2354091Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a hot-blast cupola, particularly a hot-blast cupola for smelting or melting steel slag, comprising a cupola body, a feeding port, a heat exchange blowing device and a chimney. For increasing wind temperature and prolonging the service life of the cupola, the utility model is characterized in that the heat exchange blowing device is provided with a set of heat exchangers, and the heat exchangers are positioned in a combustion chamber on the cupola body. The combustion chamber is communicated with the chimney, the heat exchangers are communicated with each other in sequence according to heat exchange blowing path, and the air ducts of the heat exchangers are distributed with a series of heat exchange ribs.

Description

Blast-heating cupola
The utility model relates to a kind of blast-heating cupola, especially the blast-heating cupola of melting or fusing slag.
At present, the blast-heating cupola that is used to melt remelted pig iron generally includes: shaft, heat exchange air-supply arrangement and chimney.Its coiled heat exchanger is positioned at chimney, obtains hot blast to improve molten iron temperature by the waste gas chemical heat.Its weak point is: pipeline is long, and dust stratification appears in maintenance difficult easily, and its wind-warm syndrome generally is difficult to reach 500 ℃.
First purpose of the present utility model is to provide a kind of blast-heating cupola, and it can utilize the waste gas chemical heat to improve wind-warm syndrome more fully.
Second purpose of the present utility model is to provide a kind of blast-heating cupola, and it can prolong furnace life and be convenient to maintenance.
The technical scheme that realizes the utility model purpose is: a kind of blast-heating cupola, especially melting or the fusing slag blast-heating cupola, comprise: shaft, charge door, heat exchange air-supply arrangement and chimney, its distinctive feature is: the heat exchange air-supply arrangement has one group of heat exchanger, this heat exchanger is positioned at the combustion chamber on the shaft, the combustion chamber is connected with chimney, is connected successively by heat exchange air-supply approach between each heat exchanger, and the air channel of heat exchanger is distributed with a series of heat exchange muscle sheets.
And, 2~4 layers on heat exchanger is set from the bottom to top, every layer is set up separately 1~5 heat exchanger, charge door is positioned at the 1st layer, blast pipe is connected with the heat exchanger of the superiors, each layer heat exchanger is communicated with the blast pipe that its discharge pipe of back is down one deck heat exchanger successively, and the discharge pipe of basecoat heat exchanger leads to burner hearth.
And heat exchanger is tubular and/or case shape, in be arranged with double wall formula air channel and winding type air channel.
And the 1st, 4 layer is the tubular heat exchanger, and the 2nd, 3 layer is case shape heat exchanger.
Perhaps, the 1st, 3 layer is the tubular heat exchanger, and the 2nd layer is case shape heat exchanger.
In the technical program, heat exchanger is positioned at the combustion chamber on the shaft, still unburnt CO gas enters the combustion chamber from shaft through the 1st layer of heat exchanger and burns away, under the suction function of the formation of the combustion chamber between charge door and the chimney (air inlet of charge door double as second-time burning), combustion air constantly enters the combustion chamber through charge door, impel still unburnt CO gas in the combustion chamber, to obtain more fully burning, it not only becomes the thermal source of heat exchange air-supply arrangement, but also reduced pollution to environment, it is long that the utility model has furnace life compared to existing technology, be convenient to maintenance, advantages such as dust stratification is few, the wind-warm syndrome that is sent to burner hearth through heat exchange can reach 500 ℃~700 ℃.
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is a kind of integrally-built cutaway view of signal the utility model.
Fig. 2 is the amplification view along Figure 1A-A place.
Fig. 3 is the expansion schematic diagram of the 2nd kind of embodiment of heat exchange air-supply arrangement.
Fig. 4 is the expansion schematic diagram of the 3rd kind of embodiment of heat exchange air-supply arrangement.
Fig. 5 is the expansion schematic diagram of the 4th kind of embodiment of heat exchange air-supply arrangement.
With reference to Fig. 1, Fig. 2, the utility model comprises at least: shaft 9, charge door 12, heat exchange air-supply arrangement and chimney 1, the heat exchange air-supply arrangement has one group of heat exchanger 4, this heat exchanger 4 is positioned at the combustion chamber 2 on the shaft 9, combustion chamber 2 is connected with chimney 1, be connected successively by heat exchange air-supply approach between each heat exchanger 4, the air channel 16,18 of heat exchanger 4 is distributed with a series of heat exchange muscle sheets 14,17.
Described heat exchanger 4 can adopt the steel plate welding to form, also can be according to the process conditions integral casting forming, or connect into heat exchanger 4 integral body again after the segmentation, branch position casting, and the 1st layer of heat exchanger 7 of the following stated preferably adopts the heat resisting cast steel casting.
Heat exchanger 4 can be provided with 2~4 layers from the bottom to top, every layer is set up separately 1~5 heat exchanger 4, charge door 12 is positioned at the 1st layer of heat exchanger 7 place, blast pipe 13 is connected with the heat exchanger 4 of the superiors, each layer heat exchanger 4 is communicated with the blast pipe 5 that its discharge pipe 5 of back is down one deck heat exchanger 4 successively, the discharge pipe 8 of basecoat heat exchanger 7 leads to burner hearth 11, and the card waist 10 of burner hearth 11 is positioned at the above fusion zone of cupola well of shaft 9 following (the card waist is meant from top to bottom the undergauge position along burner hearth).This will help to improve blast intensity, guarantee molten steel quality and prolong furnace life.
Generally, the number of plies and the quantity of setting heat exchanger can be according to type of furnace specifications, air-supply capacity and desired wind pushing temperature and decide.But suggestion under normal conditions: the 1st layer is provided with 7, the 2~4 layers every layer on 1 heat exchanger to set up 1~3 heat exchanger 4 separately also just passable.
Referring to Fig. 3~Fig. 5, heat exchanger 4 is tubular and/or case shape, is arranged with double wall formula air channel 15 and winding type air channel 18 in it.
The structure of described tubular heat exchanger 3,7 and the distribution of muscle sheet 14 are similar to flue formula heat exchanger, specifically can be referring to 91109977.8 and No. 88206918.7 patents of the applicant's power of having patented.When selecting circular cylinder body, the double wall between the inside and outside cylindrical shell of two essentially concentrics is air channel 16, is distributed with a series of heat exchange muscle sheets 14 in the air channel 16, and, in the inboard of shutoff heat exchanger annular capping 15 at two ends about in the of 3, muscle sheet 14 is set also preferably.The centre of cylindrical shell is for guiding flue gas burned flame passage 19 within it, and like this, flame constitutes the encirclement to air channel 16 from both sides, will help improving the heat exchange effect to improve wind-warm syndrome.
The profile of described case shape heat exchanger 6 can be square, cuboid, cylinder, semicylinder or other polymorphic structure, the interior alternate a series of heat exchange muscle sheets 17 of arranging of casing, have certain overlapping between every adjacent two muscle sheets 17 mutually, promptly constitute winding type air channel 18, its objective is in the limited space of casing, prolong the path that air communication crosses as far as possible and increase heat exchange area, it is heated fully.
Described the 1st, 4 layer can to select 7,3, the 2,3 layers on tubular heat exchanger for use be case shape heat exchanger 6 (see figure 3)s.
Also can be: 1st, 3 layers to select 3, the 2 layers on tubular heat exchanger for use be case shape heat exchanger 6 (see figure 1)s.

Claims (5)

1, a kind of blast-heating cupola, especially melting or the fusing slag blast-heating cupola, comprise: shaft [9], charge door [12], heat exchange air-supply arrangement and chimney [1], it is characterized in that: the heat exchange air-supply arrangement has one group of heat exchanger [4], this heat exchanger [4] is positioned at the combustion chamber [2] on the shaft [9], combustion chamber [2] is connected with chimney [1], is connected successively by heat exchange air-supply approach between each heat exchanger [4], and the air channel of heat exchanger [4] [16,18] are distributed with a series of heat exchange muscle sheets [14,17].
2, furnace cupola according to claim 1, it is characterized in that: [4] 2~4 layers on heat exchanger is set from the bottom to top, every layer is set up separately 1~5 heat exchanger [4], charge door [12] is positioned at the 1st layer, blast pipe [13] is communicated with the heat exchanger [4] of the superiors, each layer heat exchanger [4] is communicated with the blast pipe [5] that its discharge pipe of back [5] is down one deck heat exchanger [4] successively, the discharge pipe [8] of basecoat heat exchanger [7] leads to burner hearth [11], the card loin [10] of burner hearth is positioned at more than the cupola well of shaft [9], below the fusion zone.
3, furnace cupola according to claim 1 and 2 is characterized in that: heat exchanger [4] is tubular and/or case shape, is arranged with double wall formula air channel [16] and winding type air channel [18] in it.
4, furnace cupola according to claim 3, it is characterized in that: 1st, 4 layers for tubular heat exchanger [7,3], and the 2nd, 3 layer is case shape heat exchanger [6].
5, furnace cupola according to claim 3 is characterized in that: 1st, 3 layers are tubular heat exchanger [7,3], and the 2nd layer is case shape heat exchanger [6].
CN 98236314 1998-09-04 1998-09-04 Hot-blast cupola Expired - Fee Related CN2354091Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 98236314 CN2354091Y (en) 1998-09-04 1998-09-04 Hot-blast cupola

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 98236314 CN2354091Y (en) 1998-09-04 1998-09-04 Hot-blast cupola

Publications (1)

Publication Number Publication Date
CN2354091Y true CN2354091Y (en) 1999-12-15

Family

ID=33984401

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 98236314 Expired - Fee Related CN2354091Y (en) 1998-09-04 1998-09-04 Hot-blast cupola

Country Status (1)

Country Link
CN (1) CN2354091Y (en)

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee