CN108796144A - A kind of application of novel backwashing technology in blast furnace slag flushing filter tank - Google Patents
A kind of application of novel backwashing technology in blast furnace slag flushing filter tank Download PDFInfo
- Publication number
- CN108796144A CN108796144A CN201810550929.XA CN201810550929A CN108796144A CN 108796144 A CN108796144 A CN 108796144A CN 201810550929 A CN201810550929 A CN 201810550929A CN 108796144 A CN108796144 A CN 108796144A
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- CN
- China
- Prior art keywords
- backwash
- filter tank
- bottom filter
- blast furnace
- cooling tower
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a kind of application of novel backwashing technology in blast furnace slag flushing filter tank, its technological process is that the outfall sewer of heat-exchanger pump draws backwash manifold connection bottom filter tank, backwash manifold setting backwash motor-driven valve control opens and closes, when bottom filter tank needs backwash, heat-exchanger pump is closed to the cooling tower water supply valve of cooling tower, unlatching needs the corresponding backwash motor-driven valve in the bottom filter tank of backwash, with the another 1 bottom filter tank for waiting for backwash of filtering water backwashing in 1 bottom filter tank of normal work, backwash terminates to close backwash motor-driven valve, it is opened into the cooling tower water supply valve of cooling tower, one backwash cycle terminates, it uses repeatedly.This technique realizes bottom filter tank backwash progress synchronous with blast furnace slag flushing, it solves the problems, such as that flushing cinder can not be synchronized when previous bottom filter tank backwash, backwash is respectively pumped with it with flushing cinder, it is non-interference, bottom filter tank backwash cycle can be effectively solved to be limited by the blast furnace casting period, keep Handling Blast Furnace Granulated Slag more convenient, operation is more reliable.
Description
Technical field
The present invention relates to blast fumance, the application of grain slag processing-bottom filter tank method backwashing technology, this technique can be applied to
Newly-built blast furnace slag flushing bottom filter tank technique system, it can also be used to blast furnace tradition flushing cinder pond reforming technology, more specifically, it relates to one
Application of the kind novel backwashing technology in blast furnace slag flushing filter tank.
Background technology
At present Handling Blast Furnace Granulated Slag method be bottom filter method, bottom filter method and other methods difference be grain slag precipitation mode not
Together, bottom filter tank bottom of pond lays multiple rows of drainage pipe with holes, and the cobblestone of the certain grade of certain thickness, pulp water are laid above filter pipe
Into bottom filter tank, the water in pond is evacuated to cooling tower or residual neat recovering system through hot water filter pump, then pump through cold water slag flushing pump
It is delivered to blast furnace slag flushing ditch, such circulating repetition utilizes.Blast furnace granulated slag is then trapped in through filtering in the filter tank of bottom, is grabbed by overhead traveling crane
Slag is transported outward.Advantage is that filtered water relatively cleans, and outward transport grain slag transportational process is not dripped, and plant area is neatly clean.It filters method and needs in bottom
Periodically backwash filter tank, to ensure grain slag filter effect, backwash water is by cold water slag flushing pump come backwash bottom filter tank, the party at present
Once method is not problem appear to is that backwash process completes, blast furnace taps a blast furnace flushing cinder again, it will causes to conflict in time（General feelings
Backwash can all be completed within the blast furnace casting period under condition）, such case occurred in certain blast fumance, anti-for current technique
The time is washed by blast furnace casting periodic restrictions, backwash uses hot water filter pump instead not with cold water slag flushing pump, passes through and control valve is arranged
To realize the filtering and backwash in bottom filter tank.
Invention content
In order to overcome in current blast furnace bottom filter tank method grain slag treatment process, the backwash time is limited by the blast furnace casting period,
By backwash water by original flushing cinder water supply pump for making into filter heat-exchanger pump confession.The present invention is by adjusting backwash water way of supplying water, not only
It can avoid limiting the backwash time in bottom filter tank because of the blast furnace casting period, additionally it is possible to ensure the normal of a whole set of grain slag processing system
Operation, backwash water pipe arrangement is more compact, reduces capital expenditure expense.
To achieve the above object, the present invention provides the following technical solutions：
A kind of application of novel backwashing technology in blast furnace slag flushing filter tank, including bottom filter tank, electrically operated valve, heat-exchanger pump, recoil
Motor-driven valve, cooling tower water supply valve, heat exchange station, cooling tower, flushing cinder water supply pump and blast furnace casting sluice are washed, bottom filter tank passes through filtering
Pipe is connected with hot water pump intake, and by electrically operated valve come unicom control between bottom filter tank and heat-exchanger pump, hot water pump discharge is by pipe
Road main pipe unicom through cooling tower water supply valve by bottom filter tank delivery to cooling tower or heat exchange station, then is conveyed by flushing cinder water supply pump
To blast furnace casting sluice, blast furnace slag quenching water flows into bottom filter tank, and the outfall sewer of heat-exchanger pump draws backwash manifold and is connected to bottom filter tank,
Backwash manifold is connect with filtering heat-exchanger pump outfall sewer, and the backwash of bottom filter tank is synchronous with blast furnace slag flushing to be carried out.
Further, the bottom filter tank, the heat-exchanger pump that is connected to by screen pipe with bottom filter tank and installation be therebetween
The quantity of electrically operated valve is two groups, and the outfall sewer of two groups of heat-exchanger pumps draws backwash manifold and is connected to bottom filter tank, backwash manifold setting
Motor-driven valve control is backwashed to open and close.
Further, when bottom filter tank needs backwash, heat-exchanger pump is closed to the cooling tower water supply valve of cooling tower, opens and needs instead
The corresponding backwash motor-driven valve in bottom filter tank washed waits for backwash with another 1 of the filtering water backwashing in 1 bottom filter tank of normal work
Bottom filter tank, backwash terminate to close backwash motor-driven valve, are opened into the cooling tower water supply valve of cooling tower, a backwash cycle terminates.
In conclusion the present invention has the advantages that compared with prior art：
（1）The backwash of bottom filter tank and blast furnace slag flushing water pump are non-interference, the feelings to conflict with the blast furnace casting period there is no the backwash time
Condition.
（2）Bottom filter uses same group of water pump, pipe arrangement compact and reasonable to be connect compared to from flushing cinder water supply pump with backwash
Backwash water, distance is closer to investment more saves.
（3）Bottom filter tank backwash progress synchronous with blast furnace slag flushing is realized, it can not be same when solving previous bottom filter tank backwash
The problem of walking flushing cinder.
In the method grain slag treatment process of blast furnace bottom filter tank, backwash waterpipe is connected with filtering heat-exchanger pump outfall sewer, backwash
It is respectively pumped with it with flushing cinder, it is non-interference, it can effectively solve bottom filter tank backwash cycle and be limited by the blast furnace casting period, make blast furnace
Grain slag processing is more convenient, and operation is more reliable.
More clearly to illustrate the structure feature and effect of the present invention, come below in conjunction with the accompanying drawings to this hair with specific embodiment
It is bright to be described in detail.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Reference numeral：The bottoms 1- filter tank, 2- electrically operated valves, 3- heat-exchanger pumps, 4- backwash motor-driven valve, 5- cooling towers water supply valve,
6- heat exchange stations, 7- cooling towers, 8- flushing cinders water supply pump, 9- blast furnace casting sluices.
Specific implementation mode
The following further describes the technical solution of the present invention in the following with reference to the drawings and specific embodiments.
Referring to Fig. 1, a kind of application of novel backwashing technology in blast furnace slag flushing filter tank, including bottom filter tank 1, electrically operated valve
2, heat-exchanger pump 3, backwash motor-driven valve 4, cooling tower water supply valve 5, heat exchange station 6, cooling tower 7, flushing cinder water supply pump 8 and blast furnace casting punching
Slag runner 9, the bottom filter tank 1 pass through screen pipe and heat-exchanger pump 3（Entrance）It is connected, by electronic between bottom filter tank 1 and heat-exchanger pump 3
Valve 2 carrys out unicom control, the outlet of heat-exchanger pump 3 by pipeline main pipe unicom, through cooling tower water supply valve 5 by 1 delivery of bottom filter tank extremely
Cooling tower 7 or heat exchange station 6, then blast furnace casting sluice 9 is transported to by flushing cinder water supply pump 8, blast furnace slag quenching water flows into bottom filter tank 1,
So move in circles.
In order to ensure that 1 backwash of bottom filter tank synchronous with blast furnace slag flushing can carry out, in the present embodiment, bottom filter tank 1 is filtered the bottom of with
The quantity of the electrically operated valve 2 of the heat-exchanger pump 3 and installation that pond 1 is connected to by screen pipe therebetween is two groups, two groups of hot water
The outfall sewer of pump 3 draws backwash manifold and is connected to bottom filter tank 1, and the backwash manifold setting backwash control of motor-driven valve 4 opens and closes.
The present invention technological process be：
The outfall sewer of heat-exchanger pump 3 draws backwash manifold and is connected to bottom filter tank 1, and the backwash manifold setting backwash control of motor-driven valve 4 is opened
It closes, when bottom filter tank 1 needs backwash, closes heat-exchanger pump 3 to the cooling tower water supply valve 5 of cooling tower 7, unlatching needs the bottom of backwash to filter
1 corresponding backwash motor-driven valve 4 of pond is filtered with the bottom that another 1 of the filtering water backwashing in 1 bottom filter tank 1 of normal work waits for backwash
Pond 1, backwash terminate to close backwash motor-driven valve 4, are opened into the cooling tower water supply valve 5 of cooling tower 7, and a backwash cycle terminates,
It uses repeatedly.
Referring to Fig. 1, backwash manifold is connect with filtering 3 outfall sewer of heat-exchanger pump, and 1 backwash of bottom filter tank can be same with blast furnace slag flushing
Step carries out.
This technique realizes 1 backwash of bottom filter tank progress synchronous with blast furnace slag flushing, cannot when solving previous 1 backwash of bottom filter tank
The problem of enough synchronizing flushing cinder.
The technical principle that the present invention is described above in association with specific embodiment, is only the preferred embodiment of the present invention.This
The protection domain of invention is not limited merely to above-described embodiment, and all technical solutions belonged under thinking of the present invention belong to the present invention
Protection domain.Those skilled in the art would not require any inventive effort the other specific realities that can associate the present invention
Mode is applied, these modes are fallen within protection scope of the present invention.
Claims (3)
1. a kind of application of novel backwashing technology in blast furnace slag flushing filter tank, including bottom filter tank (1), electrically operated valve (2), hot water
Pump (3), backwash motor-driven valve (4), cooling tower water supply valve (5), heat exchange station (6), cooling tower (7), flushing cinder water supply pump (8) and blast furnace
Tap a blast furnace sluice (9), which is characterized in that bottom filter tank (1) is connected by screen pipe with heat-exchanger pump (3) entrance, bottom filter tank (1) with
By electrically operated valve (2) come unicom control between heat-exchanger pump (3), heat-exchanger pump (3) is exported by pipeline main pipe unicom, through on cooling tower
Water valve (5) is transported to blast furnace by bottom filter tank (1) delivery to cooling tower (7) or heat exchange station (6), then by flushing cinder water supply pump (8)
Tap a blast furnace sluice (9), and blast furnace slag quenching water flows into bottom filter tank (1), and the outfall sewer of heat-exchanger pump (3) draws backwash manifold connection bottom filter
Pond (1), backwash manifold are connect with filtering heat-exchanger pump (3) outfall sewer, and (1) backwash of bottom filter tank is synchronous with blast furnace slag flushing to be carried out.
2. a kind of application of the novel backwashing technology according to claim 1 in blast furnace slag flushing filter tank, which is characterized in that
The bottom filter tank (1), the motor-driven valve of the heat-exchanger pump (3) being connected to by screen pipe with bottom filter tank (1) and installation therebetween
The quantity of door (2) is two groups, and the outfall sewer of two groups of heat-exchanger pumps (3) draws backwash manifold connection bottom filter tank (1), and backwash manifold is set
It sets backwash motor-driven valve (4) and controls keying.
3. a kind of application of the novel backwashing technology according to claim 1 in blast furnace slag flushing filter tank, which is characterized in that
When bottom filter tank (1) needs backwash, heat-exchanger pump (3) is closed to the cooling tower water supply valve (5) of cooling tower (7), unlatching needs backwash
The corresponding backwash motor-driven valve (4) in bottom filter tank (1), with another 1 of the filtering water backwashing in 1 bottom filter tank (1) of normal work
It waits for that the bottom filter tank (1) of backwash, backwash terminate to close backwash motor-driven valve (4), is opened into the cooling tower water supply valve of cooling tower (7)
(5), a backwash cycle terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810550929.XA CN108796144A (en) | 2018-05-31 | 2018-05-31 | A kind of application of novel backwashing technology in blast furnace slag flushing filter tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810550929.XA CN108796144A (en) | 2018-05-31 | 2018-05-31 | A kind of application of novel backwashing technology in blast furnace slag flushing filter tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108796144A true CN108796144A (en) | 2018-11-13 |
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ID=64089725
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810550929.XA Pending CN108796144A (en) | 2018-05-31 | 2018-05-31 | A kind of application of novel backwashing technology in blast furnace slag flushing filter tank |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201193229Y (en) * | 2008-04-25 | 2009-02-11 | 中冶京诚工程技术有限公司 | Environment protection type blast furnace slag processing equipment by OCP method |
| CN101643803A (en) * | 2009-09-04 | 2010-02-10 | 南京钢铁股份有限公司 | Back washing technology for filtration flushing cinder simultaneously tapped from double tapholes in blast furnace bottom |
| CN102492796A (en) * | 2011-12-20 | 2012-06-13 | 青岛理工大学 | After heat heating system and method for filtering blast furnace slag flushing water by using bottom filter tank |
| CN106906320A (en) * | 2017-03-08 | 2017-06-30 | 湖北新冶钢有限公司 | Blast furnace water slag-flushing bottom of pond portion backwashing system |
-
2018
- 2018-05-31 CN CN201810550929.XA patent/CN108796144A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201193229Y (en) * | 2008-04-25 | 2009-02-11 | 中冶京诚工程技术有限公司 | Environment protection type blast furnace slag processing equipment by OCP method |
| CN101643803A (en) * | 2009-09-04 | 2010-02-10 | 南京钢铁股份有限公司 | Back washing technology for filtration flushing cinder simultaneously tapped from double tapholes in blast furnace bottom |
| CN102492796A (en) * | 2011-12-20 | 2012-06-13 | 青岛理工大学 | After heat heating system and method for filtering blast furnace slag flushing water by using bottom filter tank |
| CN106906320A (en) * | 2017-03-08 | 2017-06-30 | 湖北新冶钢有限公司 | Blast furnace water slag-flushing bottom of pond portion backwashing system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |