CN102743929A - Novel gravity deduster ash unloading device - Google Patents
Novel gravity deduster ash unloading device Download PDFInfo
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- CN102743929A CN102743929A CN201210217310XA CN201210217310A CN102743929A CN 102743929 A CN102743929 A CN 102743929A CN 201210217310X A CN201210217310X A CN 201210217310XA CN 201210217310 A CN201210217310 A CN 201210217310A CN 102743929 A CN102743929 A CN 102743929A
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- ash
- ball valve
- blast furnace
- ash unloading
- unloading ball
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Abstract
The invention discloses a novel gravity deduster ash unloading device. From top to bottom, the lower end of a gravity deduster is orderly provided with: a first pneumatic ash unloading ball valve, a second pneumatic ash unloading ball valve, a corrugated expander, a rigid feeder, a transition tube, a spiral ash conveying machine and a bypass emergency ash unloading device. The first pneumatic ash unloading ball valve and the second pneumatic ash unloading ball valve input coal gas ash into the rigid feeder through the corrugated expander. The coal gas ash is then precipitated by the transition tube and output by the spiral ash conveying machine. The bypass emergency ash unloading device is used for guaranteeing normal ash unloading when the spiral ash conveying machine breaks down in a blast furnace production process. By means of the mode, the invention can avoid forced blast furnace blowing-down accidents caused by short disc deashing valve using time, severely worn sealing surface and untight sealing, and has the advantages of good sealing performance, long service life, simple and practical maintenance, high system reliability, no need for blast furnace blowing-down, as well as small breakdown probability, thus ensuring normal production of the blast furnace.
Description
Technical field
The present invention relates to dedusting of blast furnace gas device field, particularly relate to a kind of novel gravitational precipitator ash-discharging device.
Background technology
Along with modern society to the environmental requirement increasingly stringent; Dust pelletizing system is also in continuous development, its main development trend: the one, and dry dedusting technology replaces the wet dedusting technology, and the dry method dust kind is various; Advantage is outstanding; When having practiced thrift a large amount of hydroelectric resources, reduced the equipment occupation of land, be the direction of following dedusting technology development; The 2nd, pulse blowing bag type dust precipitator is in the extensive use of industry-by-industry, and pulse blowing bag type dust precipitator also is a kind of of dry method dust, and it can keep high dust-collecting efficiency and running rate for a long time, and automaticity is high, is prone to repair and maintenance, good operational environment simultaneously.
Gravitational precipitator is a kind of of mechanical precipitator; Also be most widely used a kind of cleaner in the present dedusting of blast furnace gas system, dust-cleaning principle: coal gas is behind the ingress pipe of center, because air-flow turns to suddenly; Flow velocity reduces suddenly; Dust granule in the coal gas is deposited to the deduster bottom under inertia force and gravity effect, thereby reaches the dedusting of blast furnace gas effect, improves gas quality.Usually gravitational precipitator can go out the dust granule of degranulation greater than 30 μ m, and efficiency of dust collection can reach 80% ~ 85%, and the outlet dust content of gas can be reduced to 2 ~ 3g/m
3
The ash-discharging device of gravitational precipitator also is the visual plant of dedusting of blast furnace gas system, breaks down to cause blast furnace because of gas leak causes the fault damping down, brings greater loss to production.Existing gravitational precipitator ash exhauster is that bottom ash discharging hole is provided with a disc type soot cleaning valve and the spiral ash machine that is arranged on the soot cleaning valve bottom; Utilize soot cleaning valve regularly to emit and be deposited on the coal gas ash that the mouth of pipe is shunk in the deduster bottom; Soot cleaning valve adopts electric controlled hoist to carry out transmission through steel wire rope; Steel wire rope promotes soot cleaning valve control stick afterbody through pulley, during valve opening, and the hoist engine boom hoist cable; During valve closing, hoist engine loosens steel wire rope, leans on the valve counterweight to make valve gap compress valve seat.Soot cleaning valve is sent to the coal gas ash in a pair of helical blade in relative rotation of spiral ash machine, and the coal gas ash is along with the rotation of blade is advanced, also constantly water spray cooling when advancing, the coal gas ash in propelling by moistening cooling the flying upward of dust when eliminating discharging.
But because disc type soot cleaning valve sealing surface wear is very fast, service life is shorter, and reliability is lower; For corresponding accident emergency equipment is set, so in a single day the ash-discharging device equipment fault takes place, must handle by damping down with regard to whole blast furnace system in the existing simultaneously ash-discharging device, security is low.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of novel gravitational precipitator ash-discharging device, can avoid heavy wear, the poorly sealed generation that causes the compelled damping down accident of blast furnace occurring because of disc type soot cleaning valve short sealing surface service time.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of novel gravitational precipitator ash-discharging device is provided; Be equipped with successively from top to bottom in the gravitational precipitator lower end: the first pneumatic Unloading ball valve, the second pneumatic Unloading ball valve, bellow expander, rigidity batcher, transitional cylinder and spiral ash machine; Said first, second pneumatic Unloading ball valve is input to the rigidity batcher with the coal gas ash through bellow expander, exports through spiral ash machine through said transitional cylinder post precipitation again.
In preferred embodiment of the present invention, said gravitational precipitator lower end also is provided with the emergent ash-discharging device of a bypass, comprises the 3rd pneumatic Unloading ball valve and the 4th pneumatic Unloading ball valve.
In preferred embodiment of the present invention, the said first pneumatic Unloading ball valve is a normally open.
The invention has the beneficial effects as follows: the present invention has favorable sealing property, and life cycle is long, safeguards simplely, and system reliability is high, does not need blast furnace staying, and the probability that breaks down is less, has guaranteed the ordinary production of blast furnace.
Description of drawings
Fig. 1 is the structural representation of existing gravitational precipitator ash-discharging device;
Fig. 2 is the structural representation of a kind of novel gravitational precipitator ash-discharging device of the present invention;
The mark of each parts is following in the accompanying drawing: 1, gravitational precipitator, 2, the disc type soot cleaning valve, 3, spiral ash machine; 4, the first pneumatic Unloading ball valve, 5, the second pneumatic Unloading ball valve, 6, the emergent ash-discharging device of bypass; 61, the 3rd pneumatic Unloading ball valve, the 62, the 4th pneumatic Unloading ball valve, 7, bellow expander; 8, rigidity batcher, 9, transitional cylinder.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1; Existing gravitational precipitator ash-discharging device comprises: the disc type soot cleaning valve 2 and the spiral ash machine 3 that is arranged on soot cleaning valve 2 bottoms that are arranged on gravitational precipitator 1 bottom ash discharging hole; The coal gas ash that utilizes soot cleaning valve 2 regularly to emit to be deposited in the deduster 1, soot cleaning valve 2 is sent to spiral ash machine 3 back outputs with the coal gas ash.
See also Fig. 2; The embodiment of the invention comprises from top to bottom successively: the pneumatic Unloading ball valve of the pneumatic Unloading ball valve of gravitational precipitator 1, first 4, second 5, the emergent ash-discharging device 6 of bypass, bellow expander 7, rigidity batcher 8, transitional cylinder 9 and spiral ash machine 3; First pneumatic Unloading ball valve 4, the second pneumatic Unloading ball valve 5 is input to rigidity batcher 8 with the coal gas ash through bellow expander 7, exports through spiral ash machine 3 through transitional cylinder 9 post precipitations again.
Further, the emergent ash-discharging device 6 of bypass comprises the 3rd pneumatic Unloading ball valve 61 and the 4th pneumatic Unloading ball valve 62, and what be used for when spiral ash machine 3 breaks down assurance blast furnace production process normally unloads ash.
Further, the first pneumatic Unloading ball valve 4 is a normally open, and the probability that system breaks down is less, and significantly improve the service life of system, guaranteed the ordinary production of blast furnace.
Further; The second pneumatic Unloading ball valve 5 is for putting grey control valve; When the second pneumatic Unloading ball valve 5 or rigidity batcher 8 in use go wrong when needing to change; Close the first pneumatic Unloading ball valve 4 and cut off the electricity supply, under the situation of damping down not, change the second pneumatic Unloading ball valve 5, increased the reliability of system works.
Be different from prior art; The present invention adopts two pneumatic Unloading ball valves to replace original disc type soot cleaning valve 2; Rigidity batcher 8 is installed below two billiard ball valves; To unload gas powder separation in the grey process and the continuity of unloading ash through 8 controls of rigidity batcher, to change conveniently in order guaranteeing to overhaul simultaneously, above batcher 8, install bellow expander 7 additional; The increase of the emergent ash-discharging device 6 of bypass is guaranteed when spiral ash machine 3 breaks down normally to unload ash in the assurance blast furnace production process.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (3)
1. novel gravitational precipitator ash-discharging device; It is characterized in that; Be equipped with successively from top to bottom in the gravitational precipitator lower end: the first pneumatic Unloading ball valve, the second pneumatic Unloading ball valve, bellow expander, rigidity batcher, transitional cylinder and spiral ash machine; Said first, second pneumatic Unloading ball valve is input to the rigidity batcher with the coal gas ash through bellow expander, exports through spiral ash machine through said transitional cylinder post precipitation again.
2. a kind of novel gravitational precipitator ash-discharging device according to claim 1 is characterized in that, said gravitational precipitator lower end also is provided with the emergent ash-discharging device of a bypass, comprises the 3rd pneumatic Unloading ball valve and the 4th pneumatic Unloading ball valve.
3. a kind of novel gravitational precipitator ash-discharging device according to claim 1 is characterized in that the said first pneumatic Unloading ball valve is a normally open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210217310XA CN102743929A (en) | 2012-06-28 | 2012-06-28 | Novel gravity deduster ash unloading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210217310XA CN102743929A (en) | 2012-06-28 | 2012-06-28 | Novel gravity deduster ash unloading device |
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| Publication Number | Publication Date |
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| CN102743929A true CN102743929A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201210217310XA Pending CN102743929A (en) | 2012-06-28 | 2012-06-28 | Novel gravity deduster ash unloading device |
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| CN (1) | CN102743929A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148616A (en) * | 2016-08-26 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of blast furnace gas dust collector unloads dirt device |
| CN106247362A (en) * | 2016-10-12 | 2016-12-21 | 南京凯盛开能环保能源有限公司 | The ash bucket monitoring material position of a kind of accumulatingdust and emergent ash-discharging device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101230410A (en) * | 2008-02-21 | 2008-07-30 | 上海泰山除尘设备有限公司 | Blast furnace gas impulse blowing purification dust removal system adapted for multiple volumes |
| CN201127872Y (en) * | 2007-11-23 | 2008-10-08 | 青岛钢铁控股集团有限责任公司 | Gravity force dust removing and cleaning equipment |
| EP2123778A1 (en) * | 2008-04-23 | 2009-11-25 | China Steel Corporation | Flue dust discharging method and system |
| CN202671558U (en) * | 2012-06-28 | 2013-01-16 | 郭丰亮 | Ash discharging device with plurality of ash discharging ball valves |
-
2012
- 2012-06-28 CN CN201210217310XA patent/CN102743929A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201127872Y (en) * | 2007-11-23 | 2008-10-08 | 青岛钢铁控股集团有限责任公司 | Gravity force dust removing and cleaning equipment |
| CN101230410A (en) * | 2008-02-21 | 2008-07-30 | 上海泰山除尘设备有限公司 | Blast furnace gas impulse blowing purification dust removal system adapted for multiple volumes |
| EP2123778A1 (en) * | 2008-04-23 | 2009-11-25 | China Steel Corporation | Flue dust discharging method and system |
| CN202671558U (en) * | 2012-06-28 | 2013-01-16 | 郭丰亮 | Ash discharging device with plurality of ash discharging ball valves |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148616A (en) * | 2016-08-26 | 2016-11-23 | 山东钢铁股份有限公司 | A kind of blast furnace gas dust collector unloads dirt device |
| CN106148616B (en) * | 2016-08-26 | 2018-07-31 | 山东钢铁股份有限公司 | A kind of blast furnace gas dust collector unloads dirt device |
| CN106247362A (en) * | 2016-10-12 | 2016-12-21 | 南京凯盛开能环保能源有限公司 | The ash bucket monitoring material position of a kind of accumulatingdust and emergent ash-discharging device and method |
| CN106247362B (en) * | 2016-10-12 | 2018-06-22 | 南京凯盛开能环保能源有限公司 | A kind of ash bucket monitoring material position of accumulatingdust and emergent ash-discharging device and method |
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Application publication date: 20121024 |