CN202945253U - Device for recovering constant-pressure gas discharged on top of blast furnace - Google Patents
Device for recovering constant-pressure gas discharged on top of blast furnace Download PDFInfo
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- CN202945253U CN202945253U CN2012205767285U CN201220576728U CN202945253U CN 202945253 U CN202945253 U CN 202945253U CN 2012205767285 U CN2012205767285 U CN 2012205767285U CN 201220576728 U CN201220576728 U CN 201220576728U CN 202945253 U CN202945253 U CN 202945253U
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- equalizing
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- Filtering Of Dispersed Particles In Gases (AREA)
- Blast Furnaces (AREA)
Abstract
The utility model relates to a device for recovering constant-pressure gas discharged on the top of a blast furnace. The device is characterized in that a pipe for recovering discharged constant-pressure raw gas is arranged between a loading tank and dust chambers arranged on the lower parts of at least two dry bag-type gas dust removal boxes, a valve group for controlling the on and off of the pipe for recovering the discharged constant-pressure raw gas is arranged on the pipe for recovering the discharged constant-pressure raw gas, a pipe for recovering purified gas is arranged between a main purified-gas pipe and gas purification chambers arranged on the upper part of the dust removal boxes, a valve group for controlling the on and off of the pipe for recovering the purified gas is arranged on the pipe for recovering the purified gas; the valve group for controlling the on and off of the pipe for recovering the discharged constant-pressure raw gas comprises a first gas cut-off valve, a first gas bind-plate valve and a first sealing butterfly valve or a second sealing butterfly valve, the gas outlet end of the first sealing butterfly valve or the second sealing butterfly is communicated with the inlet end of a second gas bind-plate valve, the pipe for recovering the discharged constant-pressure raw gas is connected with a gas discharge pipe so as to be communicated with the loading tank. The device has the advantages that gas energy and investment for capital construction are saved and environmental pollution is avoided and operation stability is high.
Description
Technical field
The utility model relates to a kind of a kind of blast furnace top pressure-equalizing bleeding gas recovering device in metallurgical gases recovery and the use of Environmental-protecting dust-removing technical field.
Background technology
Furnace top even pressure coal gas diffusion technique in existing blast furnace production process, many employings all press coal gas directly sky diffused technique or set up independently dry-method dust removal of coal gas recovery system, technical having the following disadvantages:
1, contaminate environment.When sky is diffused, discharging dust-laden coal gas, caused atmosphere, noise pollution to environment.
2, waste energy.When being diffused, causes in sky the coal gas energy dissipation.
Set up independently dry-method dust removal of coal gas recovery system, increase investment, operation stability is poor.
The utility model content
The purpose of this utility model is utilized technique with regard to being to provide a kind of existing blast furnace gas drying bag dust removing device system of utilizing as the filtered and recycled of blast furnace roof charger pan pressure-equalizing and discharging coal gas, during the release of blast furnace roof charger pan coal gas diffusion, pass through valve operation, the pressure-equalizing and discharging raw gas enters the coal gas dry method dust-remover casing, recycling dust-removing box cloth bag filters dust-laden coal gas, after filtering, coal gas enters gas main, reaches to recycle the blast furnace top pressure-equalizing bleeding gas recovering device that requires.
Solution of the present utility model is such:
The utility model is to be provided with pressure-equalizing and discharging raw gas recovery channel between charger pan and coal gas dry-method bag-type dust collecting lower box dirt air chamber, installs on pressure-equalizing and discharging raw gas recovery channel and controls the valve group of diffusing raw gas recovery channel break-make; Be provided with the purified gas recovery channel between the air-purifying chamber of the top of purified gas house steward and dust-removing box, the valve group of controlling break-make is installed on the purified gas recovery channel.
Retrieving arrangement also comprises following technical scheme more specifically:
Described coal gas dry-method bag-type dust collecting casing is at least two.
The valve group of described control emission coal gas recovery tube break-make comprises the first gas stop valve, the first coal gas blank-plate valve, the first sealed butterfly valve or the second sealed butterfly valve.
The outlet side of described the first sealed butterfly valve or the second sealed butterfly valve is the inlet end that is communicated with the second coal gas blank-plate valve.
The coal gas diffusion pipe first line of a couplet on described charger pan is connected to Y-junction, and described pressure-equalizing and discharging raw gas recovery channel is to be connected to the coal gas diffusion pipe, thereby is communicated with charger pan.
Control on-off valve group is installed on described purified gas recovery channel comprises the 3rd coal gas blank-plate valve, the second gas stop valve.
The utility model has the advantages that:
(1) the gas saving energy.Shaft furnace charging tank coal gas to after the sky discharging, by recycling after Bag filter, has not reclaimed the energy;
(2) avoid environmental pollution.The blast furnace bucket emission coal gas is avoided environment is caused topsoil, noise pollution after recycling.
(3) save initial cost.All considering in the blast furnace gas dry dusting design has the overhaul reserve casing, utilizes existing blast furnace gas dry dusting casing, does not need to aim at the blast furnace out-spreading coal-gas recovering and utilizes and newly-built dust-removing box, saves the fund input in early stage.
(4) operation stability is high.Utilize 2 casings of blast furnace gas dry dusting to reclaim emission coal gas, under the prerequisite that guarantees casing cloth bag temperature, 2 casings recovery emission coal gas that regularly hockets.In actual motion, wherein 1 casing reclaims emission coal gas, and another 1 is dropped into the dedusting of blast furnace gas explained hereafter, guarantees the steady running of dust-removal cloth-bag.
Description of drawings
Accompanying drawing is used for explaining the utility model.
Accompanying drawing 1 is traditional blast furnace top pressure-equalizing bleeding gas process and device schematic diagram thereof.
Accompanying drawing 2 is retrieving arrangement schematic diagram of the present utility model.
Embodiment
In the present embodiment accompanying drawing, each parts detail is as follows:
1, blast-furnace body, 2, charger pan, 3, hopper, 4, the coal gas equalizing valve, 5, the coal gas diffusion pipe, 6, to empty diffusion valve, 7, the first gas stop valve, 8, pressure-equalizing and discharging raw gas recovery channel, 9, the first coal gas blank-plate valve, 10, the first sealed butterfly valve, 11, the second sealed butterfly valve, 12, blast furnace half purified gas house steward, 13, the 3rd sealed butterfly valve, 14, the second coal gas blank-plate valve, 15, the coal gas dry-method bag-type dust collecting casing, 16, the purified gas recovery channel, 17, the 3rd coal gas blank-plate valve, 18, the second gas stop valve, 19, the purified gas house steward, 20, dry method dust casing diffusion valve, 21, the 4th coal gas blank-plate valve, 22, the 4th sealed butterfly valve, 23, high pressure purified gas house steward, 24, blast furnace gas ascending pipe, 25, the coal gas gravitational precipitator.
The retrieving arrangement of the present embodiment, be provided with pressure-equalizing and discharging raw gas recovery channel 8 between charger pan 2 and two coal gas dry-method bag-type dust collecting casing 15 bottom dirt air chambers, install on pressure-equalizing and discharging raw gas recovery channel 8 and control the valve group of diffusing raw gas recovery channel break-make.The valve group of described control emission coal gas recovery tube break-make comprises the first gas stop valve 7, the first coal gas blank-plate valve 9, the first sealed butterfly valve 10, the second sealed butterfly valve 11; The outlet side of described the first sealed butterfly valve 10 or the second sealed butterfly valve 11 is the inlet ends that are communicated with the second coal gas blank-plate valve 14.
For avoiding opening too much hole on charger pan 2, therefore, coal gas diffusion pipe 5 first line of a couplet of the present embodiment on described charger pan 2 are connected to Y-junction, and described pressure-equalizing and discharging raw gas recovery channel 8 is to be connected to coal gas diffusion pipe 5, thereby are communicated with charger pan 2; Coal gas diffusion pipe 5 outlet sides can be to be connected to pressure-equalizing and discharging raw gas recovery channel 8, can be also by 6 pairs of atmosphere emptying of gas bleeding valve
blast furnace roof charger pan 2 has coal gas diffusion pipe 5 to reach empty diffusion valve 6, coal gas diffusion pipe 5 is connected pressure-equalizing and discharging raw gas recovery channel 8, pressure-equalizing and discharging raw gas recovery channel 8 is connected dry-method bag-type dust collecting casing 15 bottoms, purified gas recovery channel 16 is arranged at dry-method bag-type dust collecting casing 15 tops, purified gas recovery channel 16 is connected purified gas house steward 19, all pressures coal gas in charger pan 2 enters dry-method bag-type dust collecting casing 15 bottom dirt air chambers through pressure-equalizing and discharging raw gas recovery channel 8, after filtering, purified gas enters purified gas house steward 19 through purified gas recovery channel 16 again, the first gas stop valve 7 is installed on pressure-equalizing and discharging raw gas recovery channel 8, the first coal gas blank-plate valve 9, the first sealed butterfly valve 10, the second sealed butterfly valve 11, the outlet side of described the first sealed butterfly valve 10 or the second sealed butterfly valve 11 is the inlet ends that are communicated with the second coal gas blank-plate valve 14, the 3rd coal gas blank-plate valve 17 of controlling the coal gas break-make is installed on purified gas recovery channel 16, the second gas stop valve 18.
The outlet side of described pressure-equalizing and discharging raw gas recovery channel 8 is connected to the bottom dirt air chamber of dust-removing box 15, is connected to dust-removing box 15 and can solves dust coal gas filtration problem; Purified gas recovery channel 16 is the top air-purifying chambers that are connected to dust-removing box 15; The outlet side of purified gas recovery channel 16 is connected to purified gas house steward 19, is connected to purified gas house steward 19 and can solves the pollution problem that atmosphere emptying discharging is brought; The valve group of described control purified gas recovery channel break-make is the 3rd coal gas blank-plate valve 17, the second gas stop valve 18.
The present embodiment is the recovery process that adopts two coal gas dry-method bag-type dust collecting devices, therefore, also comprise step: pressure-equalizing and discharging raw gas recovery channel 8 is communicated with and is communicated with simultaneously two coal gas dry-method bag-type dust collecting casings, 15 bottom dirt air chambers, under the prerequisite that guarantees casing cloth bag temperature, two casings recovery emission coal gas that regularly hockets.
Install on opening pressure-equalizing and discharging raw gas recovery channel 8 and control when diffusing the valve group of raw gas recovery channel break-make, keeping gas stop valve 7 keeps closing, all the other valve groups are all opened, when top charging tank 2 needs the coal gas release, then the trip valve 7 that turns on the gas-fire is communicated with charger pan 2 and coal gas dry-method bag-type dust collecting casing 15 bottom dirt air chambers.
the operating process of the present embodiment is: see accompanying drawing 2, close the 3rd sealed butterfly valve 13 and the 4th sealed butterfly valve 22 that coal gas dry-method bag-type dust collecting casing 15 is imported and exported, stopping casing cloth bag blast furnace gas filters, open the first coal gas blank-plate valve 9 on the raw gas recovery channel, the first sealed butterfly valve 10 and the second coal gas blank-plate valve 14, then open the 3rd coal gas blank-plate valve 17 and the second gas stop valve 18 on the purified gas recovery channel, carry out the casing release, when top charging tank 2 needs the coal gas release, open the first gas stop valve 7, raw gas is by coal gas diffusion pipe 5 and pressure-equalizing and discharging raw gas recovery channel 8, enter coal gas dry-method bag-type dust collecting casing 15, purified gas after filtration enters purified gas house steward 19 by purified gas recovery channel 16, realize the recovery of the interior pressure-equalizing and discharging coal gas of charger pan 2.
Claims (6)
1. blast furnace top pressure-equalizing bleeding gas recovering device, it is characterized in that being provided with pressure-equalizing and discharging raw gas recovery channel (8) between charger pan (2) and coal gas dry-method bag-type dust collecting casing (15) bottom dirt air chamber, control the valve group of diffusing raw gas recovery channel break-make upper installation of pressure-equalizing and discharging raw gas recovery channel (8); Be provided with purified gas recovery channel (16) between the top air-purifying chamber of purified gas house steward (19) and dust-removing box (15), in the upper valve group of controlling break-make of installing of purified gas recovery channel (16).
2. according to claim 1 for the blast furnace top pressure-equalizing bleeding gas recovering device, it is characterized in that described coal gas dry-method bag-type dust collecting casing (15) is at least two.
3. according to claim 1 for the blast furnace top pressure-equalizing bleeding gas recovering device, it is characterized in that the valve group of described control emission coal gas recovery tube break-make comprises the first gas stop valve (7), the first coal gas blank-plate valve (9), the first sealed butterfly valve (10) or the second sealed butterfly valve (11).
4. according to claim 3 for the blast furnace top pressure-equalizing bleeding gas recovering device, the outlet side that it is characterized in that described the first sealed butterfly valve (10) or the second sealed butterfly valve (11) is the inlet end that is communicated with the second coal gas blank-plate valve (14).
5. according to claim 1 for the blast furnace top pressure-equalizing bleeding gas recovering device, it is characterized in that coal gas diffusion pipe (5) first line of a couplet on described charger pan (2) is connected to Y-junction, described pressure-equalizing and discharging raw gas recovery channel (8) is to be connected to coal gas diffusion pipe (5), thereby is communicated with charger pan (2).
6. the device for blast furnace top pressure-equalizing bleeding coal-gas recovering technique according to claim 1, is characterized in that the upper control on-off valve group of installing of described purified gas recovery channel (16) comprises the 3rd coal gas blank-plate valve (17), the second gas stop valve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205767285U CN202945253U (en) | 2012-11-05 | 2012-11-05 | Device for recovering constant-pressure gas discharged on top of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205767285U CN202945253U (en) | 2012-11-05 | 2012-11-05 | Device for recovering constant-pressure gas discharged on top of blast furnace |
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| Publication Number | Publication Date |
|---|---|
| CN202945253U true CN202945253U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205767285U Expired - Fee Related CN202945253U (en) | 2012-11-05 | 2012-11-05 | Device for recovering constant-pressure gas discharged on top of blast furnace |
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| CN (1) | CN202945253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925603A (en) * | 2012-11-05 | 2013-02-13 | 柳州钢铁股份有限公司 | Process and device for recycling pressure-equalizing diffusion gas at blast furnace top |
-
2012
- 2012-11-05 CN CN2012205767285U patent/CN202945253U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925603A (en) * | 2012-11-05 | 2013-02-13 | 柳州钢铁股份有限公司 | Process and device for recycling pressure-equalizing diffusion gas at blast furnace top |
| CN102925603B (en) * | 2012-11-05 | 2015-06-03 | 柳州钢铁股份有限公司 | Process and device for recycling pressure-equalizing diffusion gas at blast furnace top |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20161105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |