CN111270031A - Blast furnace diffuses raw coke oven gas purifier - Google Patents
Blast furnace diffuses raw coke oven gas purifier Download PDFInfo
- Publication number
- CN111270031A CN111270031A CN201910347560.7A CN201910347560A CN111270031A CN 111270031 A CN111270031 A CN 111270031A CN 201910347560 A CN201910347560 A CN 201910347560A CN 111270031 A CN111270031 A CN 111270031A
- Authority
- CN
- China
- Prior art keywords
- water
- pipe
- raw gas
- blast furnace
- steam
- 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.)
- Pending
Links
- 239000000571 coke Substances 0.000 title description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 238000005406 washing Methods 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims abstract description 6
- 238000011001 backwashing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 239000003034 coal gas Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
A blast furnace raw gas emission purification device is suitable for the application fields of blast furnace iron making and the like. Comprises a raw gas inlet, a washing tower, a nozzle, a communicating pipe, a steam-water separation tower, a demister, a clean gas emptying pipe, a drain pipe, a water collecting tank, a circulating pipe, a circulating pump, a demister backwashing pipe, a water injection pipe and a blow-off pipe. The blast furnace diffuses raw gas to pass through the washing tower, water is used for washing and purifying, then the steam-water separation is completed in the steam-water separation tower, and dust contained in the raw gas enters water, so that the aim of purifying the raw gas is fulfilled.
Description
Technical Field
The patent relates to a blast furnace diffuses raw coke oven gas purifier, is applicable to application fields such as blast furnace ironmaking.
Background
In the current blast furnace iron-making production process, coal gas (commonly called as raw gas) containing a large amount of dust is generated in the processes of opening a furnace, damping down and the like of the blast furnace, and the coal gas cannot be recovered due to unqualified components and can only be discharged to the air through a blast furnace top diffusing pipe. The production and operation characteristics of the blast furnace can not avoid the emission of raw gas, thereby causing dust pollution of the atmosphere.
When the blast furnace is stopped, besides the raw gas diffused through the top of the blast furnace, part of the high-temperature raw gas is discharged to the air through the backflow stop air pipe, and the dust pollution of the atmosphere is also caused.
As the number of blast furnaces in China is large, along with the stricter and stricter environmental protection requirements, the blast furnace raw gas is difficult to accept by directly discharging into the atmosphere without being treated. In some areas, raw gas is prohibited from being directly diffused, but the blast furnace ironmaking process cannot be completely replaced, and a method for purifying and treating raw gas is urgently needed to solve the problem.
Disclosure of Invention
The patent provides a blast furnace raw coke oven gas purification unit, through carrying out purification treatment to raw coke oven gas, makes the coal gas dust reduce to discharging again after reaching standard, has avoided a large amount of dust pollution, also eliminates the visual pollution of blast furnace when raw coke oven gas diffuses simultaneously.
The invention comprises a raw gas inlet 1, a washing tower 2, a nozzle 3, a communicating pipe 4, a steam-water separation tower 5, a demister 6, a clean gas emptying pipe 7, a drain pipe 8, a water collecting tank 9, a circulating water pipe 10, a circulating pump 11, a demister backwashing pipe 12, a water injection pipe 13 and a sewage discharge pipe 14.
Raw gas enters a washing tower 2 through a gas inlet 1, a nozzle 3 is arranged in the washing tower for spraying water, so that raw gas and water are fully contacted in the washing tower 2 to form steam-water mixed fluid, dust carried in the raw gas enters water to complete a washing process, the steam-water mixed fluid enters a steam-water separation tower 5 through a communicating pipe 4, a demister 6 is arranged in the steam-water separation tower 5, the steam-water mixed fluid is subjected to steam-water separation when passing through the demister 6 and is separated into clean gas and water, the clean gas is discharged through a clean gas emptying pipe 7, the water enters a water collecting tank 9 through a drain pipe 8 at the lower part of the steam-water separation tower under the action of gravity, and the water is pressurized through a circulating pipe 10 by a circulating pump 11 and then is sent to the nozzle 3 for re-.
When the water is used for the first time or the amount of the washing water is insufficient, new water is injected into the system through the water injection pipe 13. The sewage is discharged through the sewage discharge pipe 14.
In summary, the invention has the advantages that:
1) the raw gas is washed by a water washing method, and the dust emission amount in the final clean gas can be controlled by a water amount adjusting method, so that the emission standard can be reached;
2) the temperature of the raw coke oven gas can be rapidly reduced by utilizing the characteristic of maximum specific heat capacity of water, so that the difficulty of subsequent treatment is reduced;
3) the water discharged by the water discharge pipe 8 can be recycled, and the water content of the clean gas is reduced by the demister 6, so that the consumption of new water of the system is reduced;
4) the nozzle 3 sprays water downwards to realize the sufficient contact of gas and water, and meanwhile, through the optimized design, the resistance loss of the fluid can be reduced.
Drawings
Fig. 1 is a schematic diagram of the present invention, wherein a raw gas inlet 1, a washing tower 2, a nozzle 3, a communicating pipe 4, a steam-water separation tower 5, a demister 6, a clean gas emptying pipe 7, a drain pipe 8, a water collecting tank 9, a circulating water pipe 10, a circulating pump 11, a demister back flushing pipe 12, a water injection pipe 13 and a drain pipe 14.
Detailed Description
FIG. 1 is an embodiment of the present invention. As shown in the figure 1, the invention comprises a raw coke oven gas inlet 1, a washing tower 2, a nozzle 3, a communicating pipe 4, a steam-water separation tower 5, a demister 6, a clean gas emptying pipe 7, a drain pipe 8, a water collecting tank 9, a circulating water pipe 10, a circulating pump 11, a demister back flushing pipe 12, a water injection pipe 13 and a drain pipe 14.
A raw gas pipeline is connected with a gas inlet 1, raw gas enters a washing tower 2, a nozzle 3 sprays water, raw gas and water are fully contacted in the washing tower 2 to finish a washing process, a steam-water mixed fluid enters a steam-water separation tower 5 through a communicating pipe 4, steam-water separation is finished when the steam-water separation tower 5 passes through a demister 6 and is separated into clean gas and water, the clean gas is discharged through a clean gas emptying pipe 7, water enters a water collecting tank 9 through a drain pipe 8 at the lower part of the steam-water separation tower under the action of gravity, and the water is pressurized through a circulating pump 11 through a circulating water pipe 10 and then is sent to the nozzle 3 to be sprayed again and recycled.
When the water is used for the first time or the amount of the washing water is insufficient, new water is injected into the system through the water injection pipe 13. The sewage is discharged through the sewage discharge pipe 14.
The blast furnace raw gas purification device provided by the invention has various embodiments, and the attached drawings are only used for explanation and are not used for limitation of the patent. The present invention is not substantially modified in view of the above-described circumstances, and is within the scope of the present invention.
Claims (3)
1. A blast furnace diffused raw gas purification device comprises a raw gas inlet 1, a washing tower 2, a nozzle 3, a communicating pipe 4, a steam-water separation tower 5, a demister 6, a clean gas emptying pipe 7, a drain pipe 8, a water collecting tank 9, a circulating water pipe 10, a circulating pump 11, a demister backwashing pipe 12, a water injection pipe 13 and a drain pipe 14.
2. According to the description of claim 1, the patent provides a method for purifying raw gas emitted from a blast furnace: and (3) carrying out water-steam separation on the raw gas after the raw gas is washed by water spraying to complete the purification of the raw gas.
3. The method provided by the patent is not only suitable for purifying the blast furnace top raw gas, but also suitable for purifying the hot blast stove backflow damping-down raw gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347560.7A CN111270031A (en) | 2019-04-28 | 2019-04-28 | Blast furnace diffuses raw coke oven gas purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910347560.7A CN111270031A (en) | 2019-04-28 | 2019-04-28 | Blast furnace diffuses raw coke oven gas purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111270031A true CN111270031A (en) | 2020-06-12 |
Family
ID=70995259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910347560.7A Pending CN111270031A (en) | 2019-04-28 | 2019-04-28 | Blast furnace diffuses raw coke oven gas purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111270031A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004125330A (en) * | 2002-10-04 | 2004-04-22 | Jfe Steel Kk | Cleaning method and device for blast furnace gas |
| CN201493049U (en) * | 2009-03-20 | 2010-06-02 | 张勇 | Waste gas purifying device |
| CN102350179A (en) * | 2011-07-15 | 2012-02-15 | 攀钢集团攀枝花钢钒有限公司 | Flue gas washing unit |
| CN203507793U (en) * | 2013-11-06 | 2014-04-02 | 安徽同兴环保工程股份有限公司 | Device for simultaneously removing sulfur dioxide and nitrogen oxide from coke oven flue gas |
| CN203954959U (en) * | 2013-12-11 | 2014-11-26 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of flue gas pre-wash system |
| CN207006205U (en) * | 2017-06-19 | 2018-02-13 | 唐山金沙燃烧热能股份有限公司 | Large-scale chimney sprays residual neat recovering system |
| CN107803111A (en) * | 2017-12-07 | 2018-03-16 | 北京兴晟科技有限公司 | A kind of desulfuration absorbing tower mist eliminator flushing water system for recycling |
| CN108686492A (en) * | 2017-04-12 | 2018-10-23 | 中国石油化工股份有限公司 | Flue-gas dust-removing and desulfurization tower and dust-collecting sulfur-removing method |
| CN208295935U (en) * | 2018-06-20 | 2018-12-28 | 亚太森博（山东）浆纸有限公司 | Slurry factory stench processing system |
| CN210065816U (en) * | 2019-04-28 | 2020-02-14 | 北京中北欧瑞智工程技术有限公司 | Blast furnace diffuses raw coke oven gas purifier |
-
2019
- 2019-04-28 CN CN201910347560.7A patent/CN111270031A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004125330A (en) * | 2002-10-04 | 2004-04-22 | Jfe Steel Kk | Cleaning method and device for blast furnace gas |
| CN201493049U (en) * | 2009-03-20 | 2010-06-02 | 张勇 | Waste gas purifying device |
| CN102350179A (en) * | 2011-07-15 | 2012-02-15 | 攀钢集团攀枝花钢钒有限公司 | Flue gas washing unit |
| CN203507793U (en) * | 2013-11-06 | 2014-04-02 | 安徽同兴环保工程股份有限公司 | Device for simultaneously removing sulfur dioxide and nitrogen oxide from coke oven flue gas |
| CN203954959U (en) * | 2013-12-11 | 2014-11-26 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of flue gas pre-wash system |
| CN108686492A (en) * | 2017-04-12 | 2018-10-23 | 中国石油化工股份有限公司 | Flue-gas dust-removing and desulfurization tower and dust-collecting sulfur-removing method |
| CN207006205U (en) * | 2017-06-19 | 2018-02-13 | 唐山金沙燃烧热能股份有限公司 | Large-scale chimney sprays residual neat recovering system |
| CN107803111A (en) * | 2017-12-07 | 2018-03-16 | 北京兴晟科技有限公司 | A kind of desulfuration absorbing tower mist eliminator flushing water system for recycling |
| CN208295935U (en) * | 2018-06-20 | 2018-12-28 | 亚太森博（山东）浆纸有限公司 | Slurry factory stench processing system |
| CN210065816U (en) * | 2019-04-28 | 2020-02-14 | 北京中北欧瑞智工程技术有限公司 | Blast furnace diffuses raw coke oven gas purifier |
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