CN201485071U - Pneumatic ash conveying system for blast furnace gas by dry dedusting method - Google Patents
Pneumatic ash conveying system for blast furnace gas by dry dedusting method Download PDFInfo
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- CN201485071U CN201485071U CN2009200483425U CN200920048342U CN201485071U CN 201485071 U CN201485071 U CN 201485071U CN 2009200483425 U CN2009200483425 U CN 2009200483425U CN 200920048342 U CN200920048342 U CN 200920048342U CN 201485071 U CN201485071 U CN 201485071U
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Abstract
The utility model relates to a pneumatic ash conveying system for blast furnace gas by the dry dedusting method, which mainly solves the technical problems of the prior ash conveying system that because the gas source is single, the ash conveying pipe is easy to block, dust flies during ash discharging and the service life of the ash conveying bend is short. The ash conveying system comprises a nitrogen conveying branch and a gas conveying branch which are connected in parallel, an ash conveying control valve is connected at the output end of the nitrogen conveying branch and a gas conveying branch after being connected in parallel, the output end of the ash conveying control valve is connected with a big ash bin through a pipeline, and a deduster cylinder is connected on the pipeline between the ash conveying control valve and the big ash bin through an ash conveying bend; the deduster cylinder is connected with the ash conveying bend through an ash bucket, a lower ash discharging electric ball valve, an ash discharging pneumatic bell valve and an upper ash discharging electric ball valve in sequence, and the top of the big ash bin is connected with a low-pressure clean gas pipe through a gas recovery control valve. The system has the advantages that the reliability is improved, the purified high-pressure blast furnace gas is fully utilized, and the consumption of the external gas source for ash conveying is fundamentally reduced.
Description
Technical field
The utility model relates to a kind of blast furnace gas dry dusting Pneumatic ash conveying system, this system has improved the reliability of ash-transmission system, and made full use of and purified back high pressure blast furnace gas, fundamentally reduce defeated grey extraneous source of the gas consumption, special defeated grey wear-resistant bend, flow process is short, occupy that space is little, operating charges and capex is low, non-environmental-pollution.
Background technology
The defeated grey technology of dedusting of blast furnace gas is perfect day by day along with the dust collecting process development.How early stage blast furnace dust mixes wet back with water spray transfers out gas mud with the scraper plate machine, and this technology is open type, and muddy water pollutes surrounding environment, and the smell of volatilization is extremely unpleasant.This Pneumatic ash conveying technology is the totally-enclosed system, and the pollution of fundamentally stopping the secondary dust has improved operating environment.
The blast furnace dust pneumatic conveying process is to use nitrogen as defeated grey medium in the gas dust removal system that uses at present, utilize the defeated ash of blast-furnace top gas recovery on a small quantity, for example: Chinese patent application CN95207152.5 " Blast Furnace Gas Pressure Pneumatic Ash Device ", comprise coal gas ash conveying pipe, bag dust collector, intermediate bin, big grey storehouse, control cock and nitrogen pipeline.Its flow process is: utilize the pressure energy of blast furnace gas self, be carrier, be transported in the concentrated big grey storehouse by this device and go with the clear height producer gas, coal gas is got back to again in the low-pressure gas system and is gone after reducing pressure through secondary filtration.Be deposited on the ash in the big grey storehouse, enter a humidification mixing plant after, ash is discharged with the wetability form, constitutes coal gas overbottom pressure Pneumatic ash conveying with this.But this mode is just utilized and is purified blast furnace gas as single source of the gas, when the blast furnace roof pressure is unusual, is prone to the ash pipeline latch up phenomenon, influences dust pelletizing system safety, influences blast furnace production; And this ash conveying device finally can only pass through humidification mixing plant ash discharge, and this ash discharge mode is for opening wide mode, and during the discharging plaster, contaminated environment during the humidifier fault, also has the secondary dust to pollute.Defeated grey elbow is protected disposal, and the life-span is short.
The utility model content
The purpose of this utility model provides a kind of blast furnace gas dry dusting ash air-transport system, solves mainly that source of the gas that existing ash-transmission system exists is single to cause ash pipeline to stop up and technical matters such as ash discharge airborne dust and defeated grey elbow service life is low easily.
Technical solutions of the utility model are: a kind of blast furnace gas dry dusting ash air-transport system, carry branch road and coal gas to carry branch road and connect by nitrogen, and the defeated grey control cock of output termination after connecing, defeated grey control cock mouth connects big grey storehouse by pipeline, connects the dust exhaustor cylindrical shell by defeated grey elbow on pipeline between defeated grey control cock and the big grey storehouse.Nitrogen is carried a route nitrogen tube, nitrogen storage gas tank, nitrogen pressure regulating valve group and nitrogen control cock to be connected in series successively and is formed, coal gas carries a route high pressure clean coal tracheae, control valve for coal gas, coal gas pressure regulating valve group to be connected in series successively and to form, the dust exhaustor cylindrical shell successively by ash bucket, bottom unload grey electrical ball valve, unload grey pneumatic clock valve, top unloads grey electrical ball valve and is connected with defeated grey elbow, big Hui Cang top connects low pressure clean coal tracheae by reclaiming control valve for coal gas.
Big Hui Cang top also is provided with explosion venting valve and diffuses valve, in the big grey storehouse bag-type dust clean-up device is set, and in bottom, big grey storehouse humidifier ash hole and dry ash ash hole is set.
Described defeated grey elbow is the threeway that connects bend pipe in the straight tube, and port is fixed with flange, and the ash pipeline lined ceramics adds the cartridge plate cover, is filled with wear-resisting cement layer in the steel plate cover.
When blast furnace normally moves, high pressure blast furnace gas pressure stability after will purifying by coal gas pressure regulating valve group is at 0.08～0.1Mpa, the dust that utilizes this coal gas will unload from the bf bag filter dedusting as propulsion source, deliver to through pneumatic carrier and to deposit ash-storing bin, the ash storehouse is long-pending when a certain amount of, gas ash is drained into special-use vehicle transport processing; When the blast furnace roof pressure is unusual, utilize the nitrogen that is adjusted to constant pressure through Pneumatic ash conveying Guan Zhida ash storehouse.Dedusting and purifying device is equipped with at big Hui Cang top, and the clear height producer gas that enters grey storehouse advances the high coal house steward of low pressure through dedusting, is able to recycle.
The beneficial effects of the utility model are to have improved the Pneumatic ash conveying system stability, and the pollution of fundamentally stopping the secondary dust has improved operating environment; When the utility model ash-transmission system normally moves at blast furnace, carry dust with the clear height producer gas, when the blast furnace normal pressure, carry dust with nitrogen, the defeated grey source of the gas of two-way is standby each other, guarantees safety, the reliability of bag dust collector.Defeated grey elbow, the ash pipeline lined ceramics, outer cast steel system cement protecting sleeve strengthens abrasive resistance, effectively improves its life-span.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the big grey chamber structure scheme drawing of the utility model
Fig. 3 is the defeated grey elbow structure scheme drawing of the utility model
Among the figure: 1-nitrogen tube, 2-nitrogen storage gas tank, 3-nitrogen pressure regulating valve group, 4-nitrogen control cock, 5-coal gas pressure regulating valve group, 6-control valve for coal gas, 7-high pressure clean coal tracheae, 8-fails grey control cock, and 9-fails grey elbow, 10-unloads on top grey electrical ball valve, and 11-unloads grey pneumatic clock valve, and 12-unloads the bottom grey electrical ball valve, the 13-ash bucket, 14-dust exhaustor cylindrical shell, 15-ash conveying pipe, the big grey storehouse of 16-, 17-reclaims control valve for coal gas, 18-low pressure clean coal tracheae, the 19-explosion venting valve, 20-diffuses valve, 21-bag-type dust clean-up device, 22-humidifier ash hole, 23-dry ash ash hole, 24-steel plate cover, the wear-resisting cement layer of 25-, 26-flange.
The specific embodiment
With reference to Fig. 1, a kind of blast furnace gas dry dusting ash air-transport system, carry branch road and coal gas to carry branch road and connect by nitrogen, and the defeated grey control cock 8 of output termination after connecing, defeated grey control cock mouth connects big grey storehouse 16 by ash conveying pipe 15, connects dust exhaustor cylindrical shell 14 by defeated grey elbow 9 on pipeline between defeated grey control cock 8 and the big grey storehouse 16.Nitrogen is carried a route nitrogen tube i, nitrogen storage gas tank 2, nitrogen pressure regulating valve group 3 and nitrogen control cock 4 to be connected in series successively and is formed, coal gas carries a route high pressure clean coal tracheae 7, control valve for coal gas 6, coal gas pressure regulating valve group 5 to be connected in series successively and to form, dust exhaustor cylindrical shell 14 successively by ash bucket 13, bottom unload grey electrical ball valve 12, unload grey pneumatic clock valve 11, top unloads grey electrical ball valve 10 and is connected with defeated grey elbow 9,16 tops, big grey storehouse connect low pressure clean coal tracheaes 18 by reclaiming control valve for coal gas 17.The nitrogen source of the gas is delivered to nitrogen storage gas tank 2 by nitrogen tube 1, and gas source is delivered to control valve for coal gas 6 by high pressure clean coal tracheae 7.
The blast furnace roof pressure is just often opened control valve for coal gas 6, and chain standby nitrogen control cock 4 of closing defeated grey usefulness is utilized the defeated ash of purified gas.Concrete steps: at first gas pressure is stabilized in 0.08～0.1Mpa by coal gas pressure regulating valve group 5, open control valve for coal gas 6, open defeated grey control cock 8, open successively that the bottom is unloaded grey electrical ball valve 10, unloaded grey pneumatic clock valve 11, grey electrical ball valve 12 is unloaded on top, and gas ash is delivered to ash conveying pipe 15.
Close control valve for coal gas 6 when the blast furnace roof pressure is unusual, the standby nitrogen control cock 4 of the defeated grey usefulness of chain unlatching is utilized the defeated ash of nitrogen.Concrete steps: at first nitrogen pressure is stabilized in 0.08～0.1Mpa by nitrogen pressure regulating valve group 3, open control valve for coal gas 6, open defeated grey valve 8, open successively that the bottom is unloaded grey electrical ball valve 10, unloaded grey pneumatic clock valve 11, grey electrical ball valve 12 is unloaded on top, and gas ash is delivered to ash conveying pipe 15.
With reference to Fig. 2, big Hui Cang top also is provided with explosion venting valve 19 and diffuses valve 20, in the big grey storehouse bag-type dust clean-up device 21 is set, and in bottom, big grey storehouse humidifier ash hole 22 and dry ash ash hole 23 is set.Blast furnace dust enters in the cylindrical shell of big grey storehouse by ash conveying pipe 15, mixing coal gas (nitrogen) that gas ash enters big grey storehouse through excessive grey storehouse bag-type dust clean-up device 21, if coal gas (nitrogen) dustiness after purifying is qualified then to enter low pressure clean coal tracheae 18 by purified gas recovery valve 17 and is used, if coal gas (nitrogen) the dustiness nonconformity after purifying then diffuses valve 20 emptying by big grey storehouse.When gas ash reached a certain amount of in the big grey storehouse, gas ash entered in the airtight tank car from dry ash ash hole 23; During airtight tank car fault,, enter bulk cement truck from humidifier ash hole 22.
With reference to Fig. 3, described defeated grey elbow is the threeway that connects bend pipe in the straight tube, and port is fixed with flange 26, and the ash conveying pipe lined ceramics adds cartridge plate cover 24, is filled with wear-resisting cement layer 25 in the steel plate cover.
Claims (3)
1. blast furnace gas dry dusting ash air-transport system, it is characterized in that: carry branch road and coal gas to carry branch road and connect by nitrogen, and the defeated grey control cock of output termination after connecing, defeated grey control cock mouth connects big grey storehouse by pipeline, connects the dust exhaustor cylindrical shell by defeated grey elbow on pipeline between defeated grey control cock and the big grey storehouse; Nitrogen is carried a route nitrogen tube, nitrogen storage gas tank, nitrogen pressure regulating valve group and nitrogen control cock to be connected in series successively and is formed, coal gas carries a route high pressure clean coal tracheae, control valve for coal gas, coal gas pressure regulating valve group to be connected in series successively and to form, the dust exhaustor cylindrical shell successively by ash bucket, bottom unload grey electrical ball valve, unload grey pneumatic clock valve, top unloads grey electrical ball valve and is connected with defeated grey elbow, big Hui Cang top connects low pressure clean coal tracheae by reclaiming control valve for coal gas.
2. a kind of blast furnace gas dry dusting ash air-transport system according to claim 1, it is characterized in that: big Hui Cang top also is provided with explosion venting valve and diffuses valve, in the big grey storehouse bag-type dust clean-up device is set, humidifier ash hole and dry ash ash hole is set in bottom, big grey storehouse.
3. a kind of blast furnace gas dry dusting ash air-transport system according to claim 1, it is characterized in that: described defeated grey elbow is the threeway that connects bend pipe in the straight tube, and port is fixed with flange, the ash pipeline lined ceramics, add the cartridge plate cover, in the steel plate cover, be filled with wear-resisting cement layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200483425U CN201485071U (en) | 2009-09-04 | 2009-09-04 | Pneumatic ash conveying system for blast furnace gas by dry dedusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200483425U CN201485071U (en) | 2009-09-04 | 2009-09-04 | Pneumatic ash conveying system for blast furnace gas by dry dedusting method |
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| CN201485071U true CN201485071U (en) | 2010-05-26 |
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| CN2009200483425U Expired - Fee Related CN201485071U (en) | 2009-09-04 | 2009-09-04 | Pneumatic ash conveying system for blast furnace gas by dry dedusting method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398783A (en) * | 2011-07-06 | 2012-04-04 | 孙家鼎 | Tooth rope type pulverized fuel ash conveying system |
| CN103241550A (en) * | 2013-05-09 | 2013-08-14 | 交城义望铁合金有限责任公司 | Pneumatic ash conveying system |
| CN103723519A (en) * | 2013-12-30 | 2014-04-16 | 陕西大唐新能电力设计有限公司 | Coal ash collecting and delivery method |
| CN105674254A (en) * | 2014-11-20 | 2016-06-15 | 中建材创新科技研究院有限公司 | Cleaning ash discharge and recycle system for fluidized bed combustion boiler |
| CN107513592A (en) * | 2017-08-15 | 2017-12-26 | 广西华锐钢铁工程设计咨询有限责任公司 | Grey technique and device are unloaded in mechanical totally-enclosed with pressure |
| CN109022656A (en) * | 2018-10-09 | 2018-12-18 | 马鞍山钢铁股份有限公司 | A kind of blast furnace gas dry dusting ash-transmission system |
| CN109266797A (en) * | 2018-09-07 | 2019-01-25 | 武汉钢铁有限公司 | Precipitator dust reclaim utilizes system |
| CN110950103A (en) * | 2019-12-26 | 2020-04-03 | 浙江菲达环保科技股份有限公司 | Train charging devices of environmental protection |
| CN112173718A (en) * | 2020-09-30 | 2021-01-05 | 安徽维嵩生产力促进有限公司 | Automatic pulse creeping type concentrated phase pneumatic conveying system for whole pipe system |
| CN113606372A (en) * | 2021-08-05 | 2021-11-05 | 宝武集团鄂城钢铁有限公司 | Knife gate valve |
-
2009
- 2009-09-04 CN CN2009200483425U patent/CN201485071U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398783A (en) * | 2011-07-06 | 2012-04-04 | 孙家鼎 | Tooth rope type pulverized fuel ash conveying system |
| CN103241550A (en) * | 2013-05-09 | 2013-08-14 | 交城义望铁合金有限责任公司 | Pneumatic ash conveying system |
| CN103723519A (en) * | 2013-12-30 | 2014-04-16 | 陕西大唐新能电力设计有限公司 | Coal ash collecting and delivery method |
| CN105674254A (en) * | 2014-11-20 | 2016-06-15 | 中建材创新科技研究院有限公司 | Cleaning ash discharge and recycle system for fluidized bed combustion boiler |
| CN107513592A (en) * | 2017-08-15 | 2017-12-26 | 广西华锐钢铁工程设计咨询有限责任公司 | Grey technique and device are unloaded in mechanical totally-enclosed with pressure |
| CN109266797A (en) * | 2018-09-07 | 2019-01-25 | 武汉钢铁有限公司 | Precipitator dust reclaim utilizes system |
| CN109022656A (en) * | 2018-10-09 | 2018-12-18 | 马鞍山钢铁股份有限公司 | A kind of blast furnace gas dry dusting ash-transmission system |
| CN110950103A (en) * | 2019-12-26 | 2020-04-03 | 浙江菲达环保科技股份有限公司 | Train charging devices of environmental protection |
| CN112173718A (en) * | 2020-09-30 | 2021-01-05 | 安徽维嵩生产力促进有限公司 | Automatic pulse creeping type concentrated phase pneumatic conveying system for whole pipe system |
| CN113606372A (en) * | 2021-08-05 | 2021-11-05 | 宝武集团鄂城钢铁有限公司 | Knife gate valve |
| CN113606372B (en) * | 2021-08-05 | 2024-01-19 | 宝武集团鄂城钢铁有限公司 | Dry dust removal system |
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Legal Events
| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20170904 |