CN201737956U - Recycling device for gas in blast-furnace charging and uniform-pressure diffusing process - Google Patents
Recycling device for gas in blast-furnace charging and uniform-pressure diffusing process Download PDFInfo
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- CN201737956U CN201737956U CN2010202367703U CN201020236770U CN201737956U CN 201737956 U CN201737956 U CN 201737956U CN 2010202367703 U CN2010202367703 U CN 2010202367703U CN 201020236770 U CN201020236770 U CN 201020236770U CN 201737956 U CN201737956 U CN 201737956U
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- gas
- purified gas
- half purified
- furnace
- pipeline
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- Y02W30/54—
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a recycling device for gas in the blast-furnace charging and uniform-pressure diffusing process, which comprises a blast-furnace discharging tank, a diffusing pipeline connected with the blast-furnace discharging tank, a furnace-top gas sound-eliminating cyclone dust remover and a semi-purified gas pressurizing system. The furnace-top gas sound-eliminating cyclone dust remover and the semi-purified gas pressurizing system are respectively connected with the diffusing pipeline. The recycling device is characterized in that: a cut-off valve is arranged at the top part of the furnace-top gas sound-eliminating cyclone dust remover, and a semi-purified gas outlet arranged at the upper part of the furnace-top gas sound-eliminating cyclone dust remover is connected with a semi-purified gas purifying system. With the advantages of simple equipment and easy operation, the recycling device not only effectively recycles harmful gases in the blast-furnace charging and uniform-pressure diffusing process, but also reduces the discharging of greenhouse gases; therefore, the recycling device has economical and social benefits.
Description
Technical field
The utility model belongs to a kind of blast furnace gas draining technology field, particularly relates to a kind of gas recovering device of shaft furnace charging pressure-equalizing and discharging process.
Background technology
Will in State of Blast Furnace, constantly pack in the blast furnace production process agglomerate, natural fast ore deposit, assorted ore deposit and coke, and blast furnace is a high temperature and high pressure containers, the material of being packed in the stove by furnace roof normal pressure system has a non-pressurized converting system of high pressure, this converting system be by furnace roof the unlatching of big upper bell is set or do not have upper and lower seal valve switch in the upper and lower batch can of bell furnace roof by the feeding system interlocking automatically controlled and programing system realize.The working system of hopper and blanking tank be in the stove during cloth blanking tank hopper be pressurized to when equating with furnace pressure, open lower seal valve and baiting valve and bell, material is distributed in the stove, behind the intact material of cloth great bell baiting valve and lower seal valve are closed tight, the blanking tank internal pressure is drained into and the atmosphere equal pressure, all the time be under normal pressure (at the barometric point) state blanking tank that material packed at last batch can or elevating hopper, close material loading valve and upper sealing valve behind the charged, then pressurising in blanking tank or the big hopper again, pressurising is with half purified gas or nitrogen.When the batch can row pressure is diffused, coal gas in the blanking tank and nitrogen etc. all diffuse in the atmosphere through stock gas noise reduction tornado dust collector top by diffusing pipeline and valve, and the low amounts of dust that coal gas noise reduction tornado dust collector in top reclaim is blown into blanking tank once more in the pressurising process, this diffuses process and has not only wasted the energy, but also has caused serious pollution.Blast furnace gas is a kind of low-calorie gas energy, and is toxic and harmful.For example produce 5000000 tons of pig iron factories per year for one, only this item diffused the about 5000-7500 ten thousand stere of blast furnace gas in 1 year, and the calorific value of every cubic metre of blast furnace gas is greatly about 3300Kj/m
3About, wherein main component is: CO, CO
2, N
2, H
2Deng, wherein combustiblecomponents CO accounts for 22-28%, CO
2Content accounts for 18-23%, N
2Account for 54%, H
2With other component content seldom.The concrete Technology that also not do not reclaim of the whole world up to now at the coal gas of charging of blast furnace system pressure-equalizing and discharging process, this gas recovery of diffusing is had energy recovery and the dual function that reduces environmental pollution, also is the great innovation problem that the blast furnace ironmaking worker carries out energy-saving and emission-reduction.
Summary of the invention
The purpose of this utility model is the deficiency that exists in the above-mentioned existing production technique, provide a kind of simple in structure, the gas recovering device of the shaft furnace charging pressure-equalizing and discharging process of easy handling, it can carry out recycling with the coal gas that produces in the shaft furnace charging pressure-equalizing and discharging process effectively, improve environmental protection, and guarantee that the shaft furnace charging system pressure is stable, safe and reliable.
The purpose of this utility model realizes by following technical proposals:
The gas recovering device of shaft furnace charging pressure-equalizing and discharging process of the present utility model, comprise the blast furnace blanking tank, the tank connected pipeline that diffuses of blast furnace blanking therewith, diffuse stock gas noise reduction tornado dust collector and half purified gas pressurising pipeline and nitrogen pressurising pipeline that pipeline connects respectively therewith, it is characterized in that being provided with trip valve at the top of described stock gas noise reduction tornado dust collector, be provided with half purified gas air outlet on described stock gas noise reduction tornado dust collector top, this half purified gas air outlet is connected with half purified gas purification system, described half purified gas purification system is by the half purified gas gas pipe line that is connected with half purified gas air outlet, be arranged on half purified gas trip valve on this half purified gas gas pipe line, the sack cleaner that is connected with described half purified gas outlet pipe, the purified gas gas pipe line that connects of sack cleaner blowing mouth therewith, be arranged on the purified gas trip valve on the purified gas gas pipe line, the unloading valve that connects of sack cleaner cinder-discharging port therewith, ash pipeline and electrical control cubicles are formed, described purified gas gas pipe line is connected with gaspipe network, described ash pipeline is connected with fume recovery system, described half purified gas trip valve, the purified gas trip valve is connected with the electrical control cubicles of unloading valve with half purified gas purification system.
Compared with prior art, the beneficial effects of the utility model are: owing to set up trip valve and a cover half purified gas purification system in the shaft furnace charging pressure-equalizing and discharging process of the present utility model on furnace roof whirlwind sound damper, make and originally diffuse diffusing in the atmosphere, reach qualified back being used as power purified gas is sent into gaspipe network by furnace top pressure with the further smart dedusting of coal gas.The utility model is simple in structure, and easy handling is convenient to safeguard and is installed; Not only reclaim charging, equalizing effectively and diffused obnoxious flavour in the process, but also reduced the discharging of greenhouse gases, alleviated environmental stress, had great economic benefit and social benefit.
The utility model is when carrying out coal-gas recovering to the charging, equalizing process of diffusing, and the operation of the cloth of furnace roof is identical with original schedule of operation, and coal gas carries out in closed system in the removal process, safety, reliable.
Description of drawings
Fig. 1 is the structural representation of the gas recovering device of shaft furnace charging pressure-equalizing and discharging process of the present utility model.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with embodiment.
As shown in Figure 1, the gas recovering device of shaft furnace charging pressure-equalizing and discharging process of the present utility model, comprise blast furnace blanking tank 2, blast furnace blanking tank 2 connects therewith diffuses pipeline 4, diffuse stock gas noise reduction tornado dust collector 5 and half purified gas pressurising pipeline 9 and nitrogen pressurising pipeline 10 that pipeline 4 connects respectively therewith, it is characterized in that being provided with trip valve 6 at the top of described stock gas noise reduction tornado dust collector 5, be provided with half purified gas air outlet 7 on described stock gas noise reduction tornado dust collector 5 tops, this half purified gas air outlet 7 is connected with half purified gas purification system, described half purified gas purification system is by the half purified gas gas pipe line 8 that is connected with half purified gas air outlet 7, be arranged on half purified gas trip valve 15 on this half purified gas gas pipe line 8, the sack cleaner 14 that is connected with described half purified gas gas pipe line 8, the purified gas gas pipe line 12 that connects of sack cleaner air outlet therewith, be arranged on the purified gas trip valve 11 on the purified gas gas pipe line 12, the unloading valve 16 that connects of sack cleaner cinder-discharging port therewith, ash pipeline 17 and electrical control cubicles are formed, described purified gas gas pipe line 12 is connected with gaspipe network 13, described ash pipeline 17 is connected with fume recovery system 18, described half purified gas trip valve 15, purified gas trip valve 12 is connected with the electrical control cubicles of unloading valve 16 with half purified gas purification system.Technological process of the present utility model is: from the raw gas of shaft furnace charging system blanking tank 2 pressure-equalizing and dischargings through diffusing pipeline 4, enter stock gas noise reduction tornado dust collector 5, close the trip valve 6 that is arranged on stock gas noise reduction tornado dust collector 5, open half purified gas trip valve 15, half purified gas that raw gas forms behind stock gas noise reduction tornado dust collector 5 rough dustings, this half purified gas enters sack cleaner 14 through half purified gas gas pipe line 8 and half purified gas trip valve 15.Pipe network trip valve 11 turns on the gas-fire, purified gas after the sack cleaner 14 smart dedustings enters gaspipe network 13 through purified gas gas pipe line 12, use for the user, utilize again and be transported to fume recovery system 18 through cinder-discharging port, unloading valve 16 and ash conveying pipe 17 by the dust that sack cleaner 14 captures.
Number in the figure 19 is diffused valve for sack cleaner.Be mainly used in the sack cleaner maintenance.
Principle of work of the present utility model is: go up batch can 3 and be pressurized to when equating with the State of Blast Furnace internal pressure when the cloth in State of Blast Furnace of blanking tank 2, open baiting valve and lower seal valve 1, material is distributed in the stove, behind the intact material of cloth baiting valve and lower seal valve 1 are closed, pressure in the blanking tank 2 is drained to the atmosphere equal pressure, be discharged in the stock gas noise reduction tornado dust collector 5 through diffusing pipeline 4 from the raw gas of blanking tank 2 pressure-equalizing and dischargings, close the trip valve 6 that is arranged on stock gas noise reduction tornado dust collector top this moment, this trip valve 6 has been blocked diffusing of coal gas effectively, it is entered be arranged on stock gas noise reduction tornado dust collector back half purified gas purification system, half purified gas purification system is started working, this half purified gas enters sack cleaner 14 through half purified gas outlet pipe 8 and half purified gas trip valve 15, pipe network trip valve 11 turns on the gas-fire, purified gas after the sack cleaner 14 smart dedustings enters gaspipe network 13 through purified gas gas pipe line 12, use for the user, and the dust that is captured by sack cleaner 14 is through cinder-discharging port, unloading valve 16 and ash conveying pipe 17 are transported to fume recovery system 18 and utilize.Because half purified gas trip valve 15 of the present utility model, purified gas trip valve 12 are connected with the independent electrical control cubicles of unloading valve 16 with half purified gas purification system, this half purified gas purification system can realize that machine side and remote double are to operation supervise and control.
Adopt the retrieving arrangement of coal gas of the present utility model, reduced effectively, reduced Greenhouse effect, realized the double benefit of energy-saving and emission-reduction atmospheric pollution.With 2580m
3The blast furnace production technique is an example: produce 2100000 tons of meters of the pig iron per year, a 2580m
3Blast furnace per hour diffuses 13～14 times, diffuses raw gas amount 1,496 ten thousand m at every turn
3, diffusing blast furnace gas every year is 2132 * 104m
3, as adopt the coal-gas recovering technology of shaft furnace charging pressure-equalizing and discharging process of the present utility model, and can reduce the about 533-640t of coal gas quantity discharged every year, be recoverable facility investment about 8-10 month, can create about more than 200 ten thousand yuan of economic benefit every year.
Claims (1)
1. the gas recovering device of a shaft furnace charging pressure-equalizing and discharging process, comprise the blast furnace blanking tank, the tank connected pipeline that diffuses of blast furnace blanking therewith, diffuse stock gas noise reduction tornado dust collector and half purified gas pressurising pipeline and nitrogen pressurising pipeline that pipeline connects respectively therewith, it is characterized in that being provided with trip valve at the top of described stock gas noise reduction tornado dust collector, be provided with half purified gas air outlet on described stock gas noise reduction tornado dust collector top, this half purified gas air outlet is connected with half purified gas purification system, described half purified gas purification system is by the half purified gas gas pipe line that is connected with half purified gas blowing mouth, be arranged on half purified gas trip valve on this half purified gas gas pipe line, the sack cleaner that is connected with described half purified gas outlet pipe, the purified gas gas pipe line that connects of sack cleaner air outlet therewith, be arranged on the purified gas trip valve on the purified gas gas pipe line, the unloading valve that connects of sack cleaner cinder-discharging port therewith, ash pipeline and electrical control cubicles are formed, described purified gas gas pipe line is connected with gaspipe network, described ash pipeline is connected with fume recovery system, described half purified gas trip valve, the purified gas trip valve is connected with the electrical control cubicles of unloading valve with half purified gas purification system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202367703U CN201737956U (en) | 2010-06-25 | 2010-06-25 | Recycling device for gas in blast-furnace charging and uniform-pressure diffusing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202367703U CN201737956U (en) | 2010-06-25 | 2010-06-25 | Recycling device for gas in blast-furnace charging and uniform-pressure diffusing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201737956U true CN201737956U (en) | 2011-02-09 |
Family
ID=43553239
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202367703U Expired - Fee Related CN201737956U (en) | 2010-06-25 | 2010-06-25 | Recycling device for gas in blast-furnace charging and uniform-pressure diffusing process |
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|---|---|
| CN (1) | CN201737956U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892336A (en) * | 2010-06-25 | 2010-11-24 | 鞍山亨通高炉设备工程技术有限公司 | Coal-gas recovering process and device of charging, equalizing and bleeding of blast furnace |
| CN104263866A (en) * | 2014-09-28 | 2015-01-07 | 中冶华天南京工程技术有限公司 | System and process for purifying and utilizing equalized diffuse gas of blast furnace top charging bucket |
| CN107419049A (en) * | 2017-08-01 | 2017-12-01 | 中冶焦耐(大连)工程技术有限公司 | A kind of DRI shaft furnace raw material tower pernicious gas releasing method |
-
2010
- 2010-06-25 CN CN2010202367703U patent/CN201737956U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892336A (en) * | 2010-06-25 | 2010-11-24 | 鞍山亨通高炉设备工程技术有限公司 | Coal-gas recovering process and device of charging, equalizing and bleeding of blast furnace |
| CN104263866A (en) * | 2014-09-28 | 2015-01-07 | 中冶华天南京工程技术有限公司 | System and process for purifying and utilizing equalized diffuse gas of blast furnace top charging bucket |
| CN107419049A (en) * | 2017-08-01 | 2017-12-01 | 中冶焦耐(大连)工程技术有限公司 | A kind of DRI shaft furnace raw material tower pernicious gas releasing method |
| CN107419049B (en) * | 2017-08-01 | 2022-12-13 | 中冶焦耐(大连)工程技术有限公司 | Method for diffusing harmful gas in direct reduced iron shaft furnace raw material tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Anshan Hengtong Valve Co. Ltd. Assignor: Anshan Hengtong Blast Furnace Equipment Engineering Technology Co., Ltd. Contract record no.: 2012210000042 Denomination of utility model: Recycling device for gas in blast-furnace charging and uniform-pressure diffusing process Granted publication date: 20110209 License type: Exclusive License Record date: 20120313 |
|
| 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: 20110209 Termination date: 20170625 |