CN101571357A - Blocking cleaning process for COREX smelting reduction furnace dust-removal system - Google Patents
Blocking cleaning process for COREX smelting reduction furnace dust-removal system Download PDFInfo
- Publication number
- CN101571357A CN101571357A CNA2009100520984A CN200910052098A CN101571357A CN 101571357 A CN101571357 A CN 101571357A CN A2009100520984 A CNA2009100520984 A CN A2009100520984A CN 200910052098 A CN200910052098 A CN 200910052098A CN 101571357 A CN101571357 A CN 101571357A
- Authority
- CN
- China
- Prior art keywords
- valve
- open
- dust
- blanking
- whirlwind
- 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
Images
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a blocking cleaning process for a COREX smelting reduction furnace dust-removal system, which comprises blocking cleaning of a dust recycling system and heat whirlwind blocking cleaning. The blocking cleaning of the dust recycling system comprises the following steps of clearing a collection tank, clearing a TP chamber, and clearing a fluid dust bin. The heat whirlwind blocking cleaning comprises the following steps of connecting a bent pipe on a fifth valve, opening the valve, observing the blanking situation of a dustbin on a ground floor; and opening a nitrogen valve of the TP chamber to introduce nitrogen according to the requirement. Or the heat whirlwind blocking cleaning comprises the following steps: poking an accumulated material from a bypass of the bent pipe by a steel bar; then removing a corrugated tube of a hydraulic ball valve on the upper part, and poking the accumulated material from the bottom to top by the steel bar; observing the situation of the accumulated material on heat whirlwind, and when the accumulated material is lower than the lower edge of a man hole, clearing the accumulated material on a grating in the heat whirlwind by operating personnel; and closing a heat whirlwind large man hole, removing the bent pipe, and blocking a blind plate on the bent pipe. By adopting the proposal, the process can better complete the blocking cleaning work of the whole dust-removal system, and meets the production requirement. The process has the advantages of reasonable process, good blocking cleaning effect and the like.
Description
Technical field
The present invention relates to a kind of COREX fusion reducing furnace check man process, relate in particular to a kind of COREX fusion reducing furnace dust pelletizing system blocking cleaning process method.
Background technology
Cut deal branch company of Baogang Stocks Trading Co. adopts COREX ironmaking new technology, COREX (COAL REDUCTIONEXTREME) is as the term suggests this technology can directly use mill coal to produce molten iron, broken through the dependence of traditional blast furnace ironmaking STRENGTH ON COKE resource, utilize the mill coal of China's abundant greatly, the success of COREX technology and further developing, significant to the sustainable development of China's steel and iron industry.
The COREX fusion reducing furnace has advantages such as energy-saving and environmental protection, floor space are little, is the direction of following Iron industry development.
COREX fusion reducing furnace dust pelletizing system comprises that dust arrester and dust return the system of blowing, and hot whirlwind is the dust arrester of COREX stove, and its operation principle is to rely on gravity to make coal gas and dust separation.(see figure 1)
The generation coal gas that produces from gasification furnace has a lot of dust, is cooled off by cooled coal gas after dust comes out.Before reducing gas entered shaft furnace, most of dust relied on gravitational dust collection to separate by hot whirlwind.The nearly 700-850 of the temperature of these dust ℃, they are collected in the bottom of hot whirlwind, by the nitrogen band after by fluidization dust storehouse, TP chamber, dust burner and are blown into gasification furnace.
In ordinary production, what nitrogen can continue is drawn onto burner to dust from hot whirlwind, and blows to gasification furnace.Be easy to stop up but return in the system of blowing coarse granule, cause whole piece dust line to stop up at dust.All filled up dust on the dust line under these circumstances, when serious, the barrier of hot whirlwind stops up, and has been full of dust granules in the whole hot whirlwind.In order to recover normal production, must manage the dust granules that gathers in the hot whirlwind is cleared up in the dustbin of ground floor.
Hot whirlwind block clearing operation difficult point have following some:
1, the fluidised form of hot whirlwind inner accumulated heat material, dust temperature height (700-850 ℃).
2, the buildup amount is bigger in the hot whirlwind, and the buildup in the single hot whirlwind reaches 100m
3
3, operating position coal gas, nitrogen content height, the operating personnel must wear air respiratorresuscitator.
Summary of the invention
Technical problem to be solved by this invention provides a kind of effective COREX fusion reducing furnace dust pelletizing system blocking cleaning process, to satisfy the needs of normal dedusting.
The technical scheme of technical solution problem of the present invention is as follows:
A kind of COREX fusion reducing furnace dust pelletizing system blocking cleaning process is characterized in that, comprises that dust returns to blow system's block clearing and hot whirlwind block clearing,
Said dust returns the system block clearing of blowing and comprises: at first dredge collecting tank, dredge the TP chamber then, dredge fluidised form dust storehouse at last:
Said hot whirlwind block clearing comprises the steps:
(a) bend pipe at connection the 5th valve place is opened the 5th valve, observes the blanking situation of ground floor dustbin, if blanking is arranged, then shut off valve 5, open top hydraulic ball valve, bottom hydraulic ball valve, burner stop valve, open the nitrogen valve gate open nitrogen of TP chamber;
(b) if there is not blanking, then, disclose buildup, observe the blanking situation in the ground floor dustbin while disclosing with drill rod by the bypass on the bend pipe;
(c) if drill rod is disclosed and expected no longer blanking then connect nitrogen pipeline on the hot whirlwind, open the nitrogen valve, observe the blanking situation in the ground floor dustbin again; If blanking smoothly then logical nitrogen;
(d) if blanking no longer in the dustbin, then close burner stop valve, first valve, the 3rd valve, the 5th valve, open top hydraulic ball valve, bottom hydraulic ball valve, open the nitrogen valve of TP chamber, observe the blanking situation in the ground floor dustbin, if blanking is arranged then logical nitrogen;
(e) blanking no longer in the dustbin is by the time then removed the bellows of top hydraulic ball valve, discloses buildup from the bottom up with drill rod;
(f) observe the situation of buildup in the hot whirlwind by level-sensing device, when buildup is lower than the manhole lower edge by the time, open the big manhole in hot whirlwind bottom, measure hot whirlwind temperature inside with temperature-measuring gun, by the time after temperature is lower than 80 degree in the hot whirlwind, the operating personnel has dressed the anti-articles for use of labor of special use, enters the buildup on the hot whirlwind internal cleaning barrier, and will close the ionising radiation device this moment;
(g) close the big manhole of hot whirlwind, close the 5th valve, remove bend pipe, the blind plate of shutoff pipe bent position.
By adopting such scheme can finish the blocking cleaning work of whole dust-removal system preferably, meet the needs of production.Blocking cleaning process of the present invention has advantages such as technology is reasonable, good blocking cleaning effect.
Description of drawings
Fig. 1 is a COREX fusion reducing furnace dust pelletizing system fundamental diagram;
Fig. 2 is the state diagram with drill rod cleaning pipe bent position.
Fig. 3 is for clearing up the partial structurtes figure of hot whirlwind bottom with drill rod.
The specific embodiment
Further specify the present invention below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, A is the gas inlet that has dust among Fig. 1, and B is a gas exit.COREX fusion reducing furnace dust pelletizing system blocking cleaning process of the present invention, comprising that dust returns blows system's block clearing and hot two steps of whirlwind block clearing;
Said dust returns the system block clearing of blowing and comprises:
(1) mediation collecting tank 1 is by opening glasses valve 2 and ash-valve 3 is dredged;
(2) mediation TP chamber 4: open burner stop valve 5 earlier, open the nitrogen valve of TP chamber 4 again, after 20 minutes, close the nitrogen valve of TP chamber, open first valve 6, second valve 7, make dust enter dustbin 8, open the blind plate of TP chamber 4 at last and check buildup cleaning situation by collecting tank 1;
(3) mediation fluidised form dust storehouse 9: at first open bottom hydraulic ball valve 10 and burner stop valve 5, open the nitrogen valve of TP chamber 4, dust is blown in the gasification furnace, open the 3rd valve 11, the 4th valve 12 then, make the dust of failing to clear up enter dustbin 8 by collecting tank 1, the manhole of opening fluidised form dust storehouse 9 is at last checked the cleaning situation of buildup.
Said hot whirlwind block clearing comprises the steps:
(a) bend pipe 14 at connection the 5th valve 13 places is opened the 5th valve 13, observes the blanking situation of ground floor dustbin 8, if blanking is arranged, then close the 5th valve, open top hydraulic ball valve 15, bottom hydraulic ball valve 10, burner stop valve 5, open the nitrogen valve gate open nitrogen 2 hours of TP chamber 4;
(b) if there is not blanking, then, disclose buildup with drill rod 16 by the bypass on the bend pipe 14, blanking situation (as shown in Figure 2) in the limit observation ground floor dustbin 8 is disclosed with drill rod in the limit;
(c) if drill rod is disclosed and expected no longer blanking then connect nitrogen pipeline on the hot whirlwind 17, open the nitrogen valve, observe the blanking situation in the ground floor dustbin again; If blanking smoothly then logical nitrogen half an hour;
(d) if blanking no longer in the dustbin 8, then close burner stop valve 5, first valve 6, the 3rd valve 11, the 5th valve 13, open top hydraulic ball valve 15, bottom hydraulic ball valve 10, open the nitrogen valve of TP chamber 4, observe the blanking situation in the ground floor dustbin 8, if blanking is arranged then logical nitrogen 40 minutes;
(e) blanking no longer in the dustbin 8 is by the time then removed the bellows of top hydraulic ball valve 15, discloses buildup from the bottom up with drill rod 18, and bottom puts a watt of wheel plate 19 and can lead buildup on the floor.Consider personnel's safety problem, the drill rod head two ends of disclosing buildup add two handles, and the operating personnel holds handle and carries out operation.(see figure 3)
(f) observe the situation of buildups in the hot whirlwind 17 by level-sensing device, when buildup is lower than the manhole lower edge by the time, open the big manhole in hot whirlwind bottom, measure hot whirlwind temperature inside with temperature-measuring gun, by the time after temperature is lower than 80 degree in the hot whirlwind, the operating personnel has dressed the anti-articles for use of labor of special use, enters the buildup on the hot whirlwind 17 internal cleaning barriers 20, and will close the ionising radiation device this moment;
(g) close the big manhole of hot whirlwind, close the 5th valve 13, remove bend pipe 14, the blind plate of shutoff pipe bent position.
Claims (7)
1. a COREX fusion reducing furnace dust pelletizing system blocking cleaning process is characterized in that, comprise that dust returns to blow system's block clearing and hot whirlwind block clearing,
Said dust returns the system block clearing of blowing and comprises: at first dredge collecting tank (1), dredge TP chamber (4) then, dredge fluidised form dust storehouse (9) at last:
Said hot whirlwind block clearing comprises the steps:
(a) connect the bend pipe (14) that the 5th valve (13) is located, open the 5th valve (13), observe the blanking situation of ground floor dustbin (8), if blanking is arranged, then close the 5th valve, open top hydraulic ball valve (15), bottom hydraulic ball valve (10), burner stop valve (5), open the nitrogen valve gate open nitrogen of TP chamber (4);
(b) if there is not blanking, then, disclose buildup with drill rod (16) by the bypass on the bend pipe (14), observe the blanking situation in the ground floor dustbin (8) while disclosing;
(c) if drill rod (16) is disclosed and expected no longer blanking then connect nitrogen pipeline on the hot whirlwind, open the nitrogen valve, observe the blanking situation in the ground floor dustbin again; If blanking smoothly then logical nitrogen;
(d) if blanking no longer in the dustbin (8), then close burner stop valve (5), first valve (6), the 3rd valve (11), the 5th valve (13), open top hydraulic ball valve (15), bottom hydraulic ball valve (10), open the nitrogen valve of TP chamber (4), observe the blanking situation in the ground floor dustbin (8), if blanking is arranged then logical nitrogen
(e) blanking no longer in the dustbin (5) is by the time then removed the bellows of top hydraulic ball valve (15), discloses buildup from the bottom up with drill rod (18);
(f) observe the situation of the interior buildup of hot whirlwind (17) by level-sensing device, when buildup is lower than the manhole lower edge by the time, open the big manhole in hot whirlwind bottom, measure hot whirlwind temperature inside with temperature-measuring gun, by the time after temperature is lower than 80 degree in the hot whirlwind, the operating personnel has dressed the anti-articles for use of labor of special use, enters the buildup on the hot whirlwind internal cleaning barrier, and will close the ionising radiation device this moment;
(g) close the big manhole of hot whirlwind, close the 5th valve (13), remove bend pipe (14), the blind plate of shutoff pipe bent position.
2. COREX fusion reducing furnace dust pelletizing system blocking cleaning process according to claim 1, it is characterized in that, said mediation TP chamber comprises the steps: to open earlier burner stop valve (5), open the nitrogen valve of TP chamber (4) again, after 20 minutes, close the nitrogen valve of TP chamber, open first valve (6), second valve (7), make dust pass through collecting tank (1) and enter dustbin (8), open the blind plate of TP chamber (4) at last and check buildup cleaning situation;
3. COREX fusion reducing furnace dust pelletizing system blocking cleaning process according to claim 1 is characterized in that, said mediation collecting tank (1) is by opening glasses valve (2) and ash-valve (3) is dredged.
4. COREX fusion reducing furnace dust pelletizing system blocking cleaning process according to claim 1, it is characterized in that, said mediation fluidised form dust storehouse (9) comprises the steps: at first to open bottom hydraulic ball valve (10) and burner stop valve (5), open the nitrogen valve of TP chamber (4), dust is blown in the gasification furnace, open the 3rd valve (11), the 4th valve (12) then, make the dust of failing to clear up enter dustbin (8) by collecting tank (1), the manhole of opening fluidised form dust storehouse (9) is at last checked the cleaning situation of buildup.
5. COREX fusion reducing furnace dust pelletizing system blocking cleaning process according to claim 1 is characterized in that, the logical nitrogen time is 2 hours in the said step (a).
6. COREX fusion reducing furnace dust pelletizing system blocking cleaning process according to claim 1 is characterized in that, the logical nitrogen time is 30 minutes in the said step (c).
7. COREX fusion reducing furnace dust pelletizing system blocking cleaning process according to claim 1 is characterized in that, the logical nitrogen time is 40 minutes in the said step (d).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100520984A CN101571357A (en) | 2009-05-26 | 2009-05-26 | Blocking cleaning process for COREX smelting reduction furnace dust-removal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100520984A CN101571357A (en) | 2009-05-26 | 2009-05-26 | Blocking cleaning process for COREX smelting reduction furnace dust-removal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101571357A true CN101571357A (en) | 2009-11-04 |
Family
ID=41230773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100520984A Pending CN101571357A (en) | 2009-05-26 | 2009-05-26 | Blocking cleaning process for COREX smelting reduction furnace dust-removal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101571357A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118247A (en) * | 2020-01-13 | 2020-05-08 | 内蒙古赛思普科技有限公司 | Pressure monitoring and control system and method for smelting reduction furnace |
| CN112683047A (en) * | 2021-01-20 | 2021-04-20 | 武安市裕华钢铁有限公司 | Method for cleaning blockage of shaft furnace burner |
| CN113776348A (en) * | 2021-08-11 | 2021-12-10 | 广西鱼峰水泥股份有限公司 | Anti-gushing scalding preventing device for blockage clearing of cement kiln cyclone preheater |
| CN114292670A (en) * | 2021-12-31 | 2022-04-08 | 新疆八一钢铁股份有限公司 | Method for clearing dust wire of Ou metallurgical furnace |
-
2009
- 2009-05-26 CN CNA2009100520984A patent/CN101571357A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118247A (en) * | 2020-01-13 | 2020-05-08 | 内蒙古赛思普科技有限公司 | Pressure monitoring and control system and method for smelting reduction furnace |
| CN112683047A (en) * | 2021-01-20 | 2021-04-20 | 武安市裕华钢铁有限公司 | Method for cleaning blockage of shaft furnace burner |
| CN112683047B (en) * | 2021-01-20 | 2022-06-07 | 武安市裕华钢铁有限公司 | Method for cleaning blockage of shaft furnace burner |
| CN113776348A (en) * | 2021-08-11 | 2021-12-10 | 广西鱼峰水泥股份有限公司 | Anti-gushing scalding preventing device for blockage clearing of cement kiln cyclone preheater |
| CN113776348B (en) * | 2021-08-11 | 2023-10-31 | 广西鱼峰水泥股份有限公司 | Device for preventing blowout and scalding for cleaning blockage of cyclone preheater of cement kiln |
| CN114292670A (en) * | 2021-12-31 | 2022-04-08 | 新疆八一钢铁股份有限公司 | Method for clearing dust wire of Ou metallurgical furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101571357A (en) | Blocking cleaning process for COREX smelting reduction furnace dust-removal system | |
| CN101892336A (en) | Coal-gas recovering process and device of charging, equalizing and bleeding of blast furnace | |
| CN106906331A (en) | A kind of dry-method dust-removal device and method for reclaiming converter gas waste heat | |
| CN100595284C (en) | Maintaining method for blast furnace | |
| CN102927548A (en) | Afterheat recycling device and method of high temperature flue gas containing high adhesive dust | |
| CN1563791A (en) | High pressure air clearing method for treating fault of feedback appts. of circulation fluidized bed boiler | |
| CN110538517B (en) | Dry quenching primary dust removal device and dust removal method | |
| CN206872734U (en) | A kind of cork dry quenching disposable dust remover bottom coke powder surge bunker | |
| CN207034503U (en) | The anti-block system of hot dirty gas pipeline | |
| CN212293632U (en) | Blast furnace coal injection pipeline treatment and recovery device | |
| CN114292670A (en) | Method for clearing dust wire of Ou metallurgical furnace | |
| CN205473567U (en) | Arrange burnt sliding chute device dust removal structure | |
| CN206418152U (en) | A kind of blast furnace coal gun clear rifle coal powder collection bag | |
| CN112871909A (en) | Method for emptying reduction furnace of Ou metallurgical furnace | |
| Boscolo et al. | Monitoring of particulate emissions to assess the outcomes of retrofitting measures at an ironmaking plant | |
| CN102927829A (en) | Waste heat recovery device for moderate temperature flue gas containing high binding dust and method | |
| CN207210465U (en) | A kind of blast furnace flue gas coal dust classifier | |
| CN101565766B (en) | Shaft furnace emptying technique of COREX smelting reduction device | |
| CN106322371A (en) | Anti-blocking method and device for dry type slag drainage system of biomass boiler | |
| CN101700837A (en) | Device for modifying and dredging raw coal bunker | |
| CN105441612B (en) | A kind of defeated device for coal of blast furnace granular coal injection | |
| CN214407029U (en) | Iron powder recovery device for flue at top of roasting furnace | |
| CN206887044U (en) | A kind of coal chemical industry hydrogasification device | |
| CN204313654U (en) | A kind of fuel gas supply system of iron and steel smelting | |
| CN220788655U (en) | Blast furnace slag sensible heat dual-utilization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20091104 |