CN108251586A - A kind of blast furnace gas cloth bag dedusting process - Google Patents
A kind of blast furnace gas cloth bag dedusting process Download PDFInfo
- Publication number
- CN108251586A CN108251586A CN201711492441.8A CN201711492441A CN108251586A CN 108251586 A CN108251586 A CN 108251586A CN 201711492441 A CN201711492441 A CN 201711492441A CN 108251586 A CN108251586 A CN 108251586A
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- China
- Prior art keywords
- gas
- blast furnace
- purified gas
- bag
- dedusting
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
Abstract
The present invention provides a kind of blast furnace gas cloth bag dedusting process, includes the following steps：(1) the waste blast furnace gas come out from blast furnace is become into half purified gas through gravitational precipitator；(2) half purified gas feeding moisture absorption apparatus is subjected to moisture absorption processing to it；(3) coal gas after moisture absorption is passed through into temperature controller；(4) half purified gas in step (3) is sent into bag filter and carries out further dedusting, then through the power generation of TRT equipment or reducer unit become low pressure, low temperature the clean coal gas of band chlorion, into chlorine purifier；(5) by after the dechlorinated device dechlorination of purified gas, become clean coal gas, subsequently into gaspipe network, for users to use.Dehumidification device is increased in the technique of the present invention, can guarantee efficiency of dust collection；Bag filter uses fiberglass needled mat dedusting filtering bag, adapts to the dry method dust processing under hot environment；In addition, the chlorine purifier in technique can wash chlorion therein, the corrosion that corrosive goods confrontation coal gas is effectively prevent to be responsible for.
Description
Technical field
The present invention relates to dust settling pocket technique field more particularly to a kind of blast furnace gas cloth bag dedusting process.
Background technology
With the development of steel and iron industry, create medium and small blast furnace and generally use blast furnace gas dry dusting；Some large blast furnaces
Newly-built or enlarging also has the trend using blast furnace gas dry dusting.Compared with wet dedusting, blast furnace gas dry dusting is not only
Simplify process system, the process problem for fundamentally solving secondarily polluted water and sludge, also with gas recovery physical thermal,
Water-saving, economize on electricity good result.And cooperation dry type TRT can rationally utilize gas heat, significantly improve power generation level.Country
Explicit order supports this energy-saving and emission-reduction, environmentally protective technology path.
But can not be ignored be chlorion in coal gas after cooling content it is higher, very strong acidity is presented in coal gas, right
There are serious corrosion phenomenons for the equipment such as gas piping, the valve of outlet system；If encounter low temperature coal gas or temperature not
Suitable blast furnace gas can also influence dust removing effects.
Invention content
The present invention is exactly to be directed to more than technical problem, provides a kind of blast furnace gas cloth bag dedusting process.
The present invention to achieve the above object, using following technical scheme：A kind of blast furnace gas cloth bag dedusting process, including with
Lower step：
(1) rough dusting is carried out to the waste blast furnace gas come out from blast furnace through gravitational precipitator, so that it becomes half purified gas；
(2) half purified gas obtained in step (1) is sent into moisture absorption apparatus, double of purified gas carries out dehumidification treatments；
(3) half purified gas after dehumidifying is made into the control of its temperature at 100-250 DEG C by temperature controller；
(4) half purified gas obtained in step (3) is sent into bag filter and carries out further dedusting, become clean coal
Gas, then through TRT equipment power generation or reducer unit become low pressure, low temperature the clean coal gas of band chlorion, into chlorine purifier；
(5) after dechlorinated device dechlorination, become clean coal gas, subsequently into gaspipe network, for users to use.
It is equipped in the moisture absorption apparatus except wet layer, except being equipped with hygroscopic agent in wet layer.
The hygroscopic agent is any one in silica gel, aluminium oxide, molecular sieve, calcium oxide or calcium chloride.
Dust-removal cloth-bag used in the bag filter is fiberglass needled mat dedusting filtering bag.
The beneficial effects of the invention are as follows：Dehumidification device is increased in technique provided by the invention, can guarantee efficiency of dust collection；Cloth
Bag dust collector uses fiberglass needled mat dedusting filtering bag, adapts to the dry method dust processing under hot environment；In addition, in technique
Chlorine purifier can wash chlorion therein, effectively prevent corrosive goods confrontation coal gas be responsible for corrosion.
Specific embodiment
With reference to embodiment, the invention will be further described：
A kind of blast furnace gas cloth bag dedusting process, includes the following steps：
(1) rough dusting is carried out to the waste blast furnace gas come out from blast furnace through gravitational precipitator, so that it becomes half purified gas；
(2) half purified gas obtained in step (1) is sent into moisture absorption apparatus, double of purified gas carries out dehumidification treatments；
(3) half purified gas after dehumidifying is made into the control of its temperature at 100-250 DEG C by temperature controller；
(4) half purified gas obtained in step (3) is sent into bag filter and carries out further dedusting, become clean coal
Gas, then through TRT equipment power generation or reducer unit become low pressure, low temperature the clean coal gas of band chlorion, into chlorine purifier；
(5) after dechlorinated device dechlorination, become clean coal gas, subsequently into gaspipe network, for users to use.
It is equipped in the moisture absorption apparatus except wet layer, except being equipped with hygroscopic agent in wet layer.
The hygroscopic agent is any one in silica gel, aluminium oxide, molecular sieve, calcium oxide or calcium chloride.
Dust-removal cloth-bag used in the bag filter is fiberglass needled mat dedusting filtering bag.
A kind of 1 blast furnace gas cloth bag dedusting process of embodiment, includes the following steps：
(1) rough dusting is carried out to the waste blast furnace gas come out from blast furnace through gravitational precipitator, so that it becomes half purified gas；
(2) half purified gas obtained in step (1) is sent into moisture absorption apparatus, double of purified gas carries out dehumidification treatments；
(3) half purified gas after dehumidifying is made into the control of its temperature at 100 DEG C by temperature controller；
(4) half purified gas obtained in step (3) is sent into bag filter and carries out further dedusting, become clean coal
Gas, then through TRT equipment power generation become low pressure, low temperature the clean coal gas of band chlorion, into chlorine purifier；
(5) after dechlorinated device dechlorination, become clean coal gas, subsequently into gaspipe network, for users to use.
It is equipped in the moisture absorption apparatus except wet layer, except being equipped with hygroscopic agent in wet layer.
The hygroscopic agent is silica gel.
Dust-removal cloth-bag used in the bag filter is fiberglass needled mat dedusting filtering bag.
A kind of 2 blast furnace gas cloth bag dedusting process of embodiment, includes the following steps：
(1) rough dusting is carried out to the waste blast furnace gas come out from blast furnace through gravitational precipitator, so that it becomes half purified gas；
(2) half purified gas obtained in step (1) is sent into moisture absorption apparatus, double of purified gas carries out dehumidification treatments；
(3) half purified gas after dehumidifying is made into the control of its temperature at 250 DEG C by temperature controller；
(4) half purified gas obtained in step (3) is sent into bag filter and carries out further dedusting, become clean coal
Gas, then through reducer unit become low pressure, low temperature the clean coal gas of band chlorion, into chlorine purifier；
(5) after dechlorinated device dechlorination, become clean coal gas, subsequently into gaspipe network, for users to use.
It is equipped in the moisture absorption apparatus except wet layer, except being equipped with hygroscopic agent in wet layer.
The hygroscopic agent is calcium chloride.
Dust-removal cloth-bag used in the bag filter is fiberglass needled mat dedusting filtering bag.
Above example is to the present invention have been described in detail, it is clear that present invention specific implementation is not limited by aforesaid way
System, as long as employing the various improvement of inventive concept and technical scheme of the present invention progress or not improved directly applying to it
Its occasion, within protection scope of the present invention.
Claims (4)
1. a kind of blast furnace gas cloth bag dedusting process, which is characterized in that include the following steps：
(1) rough dusting is carried out to the waste blast furnace gas come out from blast furnace through gravitational precipitator, so that it becomes half purified gas；
(2) half purified gas obtained in step (1) is sent into moisture absorption apparatus, double of purified gas carries out dehumidification treatments；
(3) half purified gas after dehumidifying is made into the control of its temperature at 100-250 DEG C by temperature controller；
(4) half purified gas obtained in step (3) is sent into bag filter and carries out further dedusting, become purified gas, so
By TRT equipment power generation or reducer unit become low pressure, low temperature the clean coal gas of band chlorion, into chlorine purifier；
(5) after dechlorinated device dechlorination, become clean coal gas, subsequently into gaspipe network, for users to use.
2. a kind of blast furnace gas cloth bag dedusting process according to claim 1, which is characterized in that set in the moisture absorption apparatus
Have except wet layer, except being equipped with hygroscopic agent in wet layer.
3. a kind of blast furnace gas cloth bag dedusting process according to claim 2, which is characterized in that the hygroscopic agent is silicon
Any one in glue, aluminium oxide, molecular sieve, calcium oxide or calcium chloride.
A kind of 4. blast furnace gas cloth bag dedusting process according to claim 1, which is characterized in that the bag filter institute
Dust-removal cloth-bag is fiberglass needled mat dedusting filtering bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492441.8A CN108251586A (en) | 2017-12-30 | 2017-12-30 | A kind of blast furnace gas cloth bag dedusting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492441.8A CN108251586A (en) | 2017-12-30 | 2017-12-30 | A kind of blast furnace gas cloth bag dedusting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108251586A true CN108251586A (en) | 2018-07-06 |
Family
ID=62724711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711492441.8A Pending CN108251586A (en) | 2017-12-30 | 2017-12-30 | A kind of blast furnace gas cloth bag dedusting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108251586A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439827A (en) * | 2018-12-06 | 2019-03-08 | 东北大学 | A kind of blast furnace raw gas heats up dust pelletizing system online |
| CN113372965A (en) * | 2021-06-28 | 2021-09-10 | 中晶环境科技股份有限公司 | Blast furnace gas desulfurization process |
-
2017
- 2017-12-30 CN CN201711492441.8A patent/CN108251586A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439827A (en) * | 2018-12-06 | 2019-03-08 | 东北大学 | A kind of blast furnace raw gas heats up dust pelletizing system online |
| CN113372965A (en) * | 2021-06-28 | 2021-09-10 | 中晶环境科技股份有限公司 | Blast furnace gas desulfurization process |
| CN113372965B (en) * | 2021-06-28 | 2024-05-28 | 中晶环境科技股份有限公司 | Desulfurization process for blast furnace gas |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180706 |