CN2828056Y - Bas cloth bag dust removing system for blast furnace - Google Patents
Bas cloth bag dust removing system for blast furnace Download PDFInfo
- Publication number
- CN2828056Y CN2828056Y CN 200520130149 CN200520130149U CN2828056Y CN 2828056 Y CN2828056 Y CN 2828056Y CN 200520130149 CN200520130149 CN 200520130149 CN 200520130149 U CN200520130149 U CN 200520130149U CN 2828056 Y CN2828056 Y CN 2828056Y
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- dust
- bag
- gas
- cloth
- blast furnace
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Abstract
The utility model relates to a cloth bag dust removing system for blast furnace gas. The raw gas generated from a blast furnace (1) and a gravity dust remover (2) enters a dust removing box body (4) with a cloth bag through an inlet glasses valve (3), and the gas which removes dust enters a TRT turbine pressure difference generating system (17) through a regulating valve (10), an outlet glasses valve (11) and a pressure reducing valve group (15), then enters a cleaning tower (19), and finally enters a comprehensive pipe network of a plant region. Meanwhile, when the dust in the cloth-bag box body is removed, the utility model uses a reverse blower to pump the gas from a gas purifying pipe so as to make a timing cycle and reverse blow of a cloth-bag chamber according to the presetting time, and the clean gas or the nitrogen gas is used for blowing the dust which is discharged from the cloth-bag chamber to a large dust bin at definite time. The utility model has the advantages of low investment and small land occupation. The utility model can improve gas quality and temperature after dust removal, and improve TRT generating capacity.
Description
Technical field
The utility model relates to blast furnace gas bag-type dust removing system, is particularly useful for the dedusting of blast furnace gas that the blast furnace heat size is big in the metallurgy industry, roof pressure is high.
Background technology
At present the dust-removal system of blast furnace gas mainly is divided into two kinds of wet method and dry method.Wherein wet dedusting water loss is big, need carry out water treatment and contaminate environment, and operation is also inconvenient, is abandoned by Steel Plant gradually.Dry method dust can be divided into electric precipitation and bag-type dust, and wherein electric precipitation entire operation system requirements is very harsh, the danger coefficient height.Therefore, bag-type dust becomes the most rising dust collecting process system.Bag-type dust is not only simple, convenient, and can reduce the production run expense, reduces production energy consumption; The recovery and the utilization ratio of secondary energy be can improve simultaneously, huge economy and environmental benefit produced.Bag-type dust can be divided into action of low-voltage pulse dedusting and big two kinds of methods of cloth bag blowback dedusting again, the dry method dust of Steel Plant's employing both at home and abroad all is the Low Voltage Impulse Method that is applicable to small furnace, low roof pressure, for the blast furnace gas bag-type dust removing system of big heat size and high roof pressure on the whole, its technology is also immature, and effect is also unsatisfactory.
Summary of the invention
The purpose of this utility model is to provide a kind of blast furnace gas bag-type dust removing system, comprise blast furnace 1, gravitational precipitator 2, inlet glasses valve 3, dust-removal cloth-bag chamber body 4, outlet glasses valve 11, reducing valve group 15, TRT turbine differential pressure power generation system 17, clean tower 19, back blowing machine 7 links to each other with dust-removal cloth-bag casing 4 by the pure qi (oxygen) pipeline.
A plurality of cloth bags of a kind of blast furnace gas bag-type dust removing system of the utility model distribute ringwise, and all there is glasses valve 20 gangway of every single dust-removal cloth-bag chamber body, and in parallel with filter tap 5 and back-flushing valve 6 respectively.
The utlity model has following advantage: blast furnace gas bag-type dust removing system than pulsed cloth bag dry method have that single casing is big, quantity is lacked, single cloth bag diameter is big and long, and the few advantage of cloth bag in the casing.As etc. the scale blast furnace adopt, big cloth bag blowback dry method has investment than pulsed cloth bag dry method and saves 58%, takes up an area of 53% the advantage of saving.Can improve gas quality and temperature after the dedusting, improve the TRT generated energy, produce huge environment and economic benefit.
Description of drawings
Fig. 1 is the utility model blast furnace gas bag-type dust removing system schema;
Fig. 2 is that the single dust-removal cloth-bag casing of the utility model blast furnace gas bag-type dust removing system filters view;
Fig. 3 is the single dust-removal cloth-bag casing of a utility model blast furnace gas bag-type dust removing system sectional view;
Fig. 4 is the single dust-removal cloth-bag casing of a utility model blast furnace gas bag-type dust removing system blowback view;
Specific embodiments
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 1, the blast furnace gas that contains a large amount of dust that is come out by blast furnace 1 enters gravitational precipitator 2 and carries out rough dusting, raw gas through rough dusting is entered by dust-removal cloth-bag chamber body 4 bottoms by inlet glasses valve 3, filter tap 5 unlatchings this moment, back-flushing valve 6 is closed, and cloth bag adopts the great circle tubular, dust-laden coal gas is through the cloth bag filtration, go out from the cloth bag side, discharge via vapor pipe, dust is delayed at the internal surface of cloth bag; Coal gas after dust removal process through reducing valve group 15, enters TRT17 turbine differential pressure power generation system by variable valve 10, outlet glasses valve 11 again; Finally incorporate plant area's comprehensive pipe network into by cleaning tower 19 at last from the coal gas that TRT comes out.When dust-removal cloth-bag casing deashing, filter tap 5 cuts out, back-flushing valve 6 is opened, according to the predefined time, utilize back blowing machine 7 to extract coal gas from the pure qi (oxygen) pipeline, blowback coal gas enters cloth bag chamber 4, and the dust that is attached on the filter bag internal surface is eliminated under the inverted draft effect down, utilize the power of purified gas or nitrogen that dust is blown in the big grey storehouse 12 and fall into ash bucket, blowback dust-laden coal gas enters the raw gas pipeline once more.When using the defeated ash of coal gas, valve 13 is closed, and valve 14 is opened; Otherwise when using the defeated ash of nitrogen, valve 14 is closed, and valve 13 is opened.
When the single dust-removal cloth-bag casing of a kind of blast furnace gas bag-type dust removing system of the utility model entered the blowback state, other casing was at the filtration state; And the blowback casing can be in order one by one, circulation is carried out.
Claims (2)
1. blast furnace gas bag-type dust removing system, comprise blast furnace (1), gravitational precipitator (2), inlet glasses valve (3), dust-removal cloth-bag chamber body (4), outlet glasses valve (11), reducing valve group (15), TRT turbine differential pressure power generation system (17), clean tower (19), it is characterized in that: back blowing machine (7) links to each other with dust-removal cloth-bag casing (4) by the pure qi (oxygen) pipeline.
2, according to the described blast furnace gas bag-type dust removing system of claims, it is characterized in that: a plurality of cloth bags distribute ringwise, and all there is glasses valve (20) gangway of every single dust-removal cloth-bag chamber body, and in parallel with filter tap (5) and back-flushing valve (6) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130149 CN2828056Y (en) | 2005-10-26 | 2005-10-26 | Bas cloth bag dust removing system for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130149 CN2828056Y (en) | 2005-10-26 | 2005-10-26 | Bas cloth bag dust removing system for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2828056Y true CN2828056Y (en) | 2006-10-18 |
Family
ID=37079614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520130149 Expired - Lifetime CN2828056Y (en) | 2005-10-26 | 2005-10-26 | Bas cloth bag dust removing system for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2828056Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140562A (en) * | 2011-03-02 | 2011-08-03 | 柳州钢铁股份有限公司 | Dry deduster for blast furnace gas |
| CN103305645A (en) * | 2013-07-11 | 2013-09-18 | 重庆钢铁(集团)有限责任公司 | Blast furnace gas purification system |
| CN104275053A (en) * | 2014-10-28 | 2015-01-14 | 攀钢集团攀枝花钢钒有限公司 | Blowback dust removal method for TRT dry dust removal system |
| CN110218828A (en) * | 2019-07-15 | 2019-09-10 | 湖北申昙环保新材料有限公司 | Blast furnace gas purification method |
-
2005
- 2005-10-26 CN CN 200520130149 patent/CN2828056Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140562A (en) * | 2011-03-02 | 2011-08-03 | 柳州钢铁股份有限公司 | Dry deduster for blast furnace gas |
| CN103305645A (en) * | 2013-07-11 | 2013-09-18 | 重庆钢铁(集团)有限责任公司 | Blast furnace gas purification system |
| CN103305645B (en) * | 2013-07-11 | 2015-10-14 | 重庆钢铁(集团)有限责任公司 | Blast furnace coal gas purification system |
| CN104275053A (en) * | 2014-10-28 | 2015-01-14 | 攀钢集团攀枝花钢钒有限公司 | Blowback dust removal method for TRT dry dust removal system |
| CN104275053B (en) * | 2014-10-28 | 2016-11-09 | 攀钢集团攀枝花钢钒有限公司 | Blowback dust collection method for TRT dry dust removal system |
| CN110218828A (en) * | 2019-07-15 | 2019-09-10 | 湖北申昙环保新材料有限公司 | Blast furnace gas purification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061018 |
|
| EXPY | Termination of patent right or utility model |