CN1012736B - Process and apparatus for cooling loading installation of shaft furnace - Google Patents
Process and apparatus for cooling loading installation of shaft furnaceInfo
- Publication number
- CN1012736B CN1012736B CN88101377.3A CN88101377A CN1012736B CN 1012736 B CN1012736 B CN 1012736B CN 88101377 A CN88101377 A CN 88101377A CN 1012736 B CN1012736 B CN 1012736B
- Authority
- CN
- China
- Prior art keywords
- collector
- annular
- water
- tank
- cage
- 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.)
- Expired
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 11
- 238000009434 installation Methods 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000004744 fabric Substances 0.000 claims abstract description 6
- 239000002826 coolant Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 6
- 210000001364 upper extremity Anatomy 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 23
- 239000000428 dust Substances 0.000 abstract description 13
- 239000011261 inert gas Substances 0.000 abstract 1
- 230000001007 puffing effect Effects 0.000 abstract 1
- 239000012809 cooling fluid Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/20—Arrangements of devices for charging
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to reduce the dust and dirt infiltrating into the liquid of cooling loop in the shaft furnace cloth flume drive unit, the inert gases and burner gas of the purifying blast furnace is puffing into the loop in the state of the gas pressure is higher than the pressure at the internal of furnace and lower than the water pressure injected into the loop.
Description
The present invention relates to the method and apparatus of cooling loading installation of shaft furnace.This device is comprising that one that a fixedly charging line that vertically is arranged in the furnace roof center, one delimit around the coaxial fixed housing that is installed in described sleeve outside of the coaxial mounted turnbarrel of described charging line, with by this cartridges sides is the cyclic chamber substantially, and this chamber is by separating with shaft furnace inside with turnbarrel all-in-one-piece rotation cage but do not completely cut off; One is hinged on the cloth skewed slot of rotation on the cage, one and is used for making sleeve and cage as the loading device of individual around the drive unit of stove and the rotation of charging line vertical axis, use an annular supply tank that is fixed on the turnbarrel upper limb, slide in its coaxial outer wall and the coaxial grooves of inwall on last shaft collar, have at least an entrance of cooling water pipe to pass shaft collar and feed annular water tank; The spiral coil cooling tube that several rhizospheres are arranged around the rotation cage, each cooling tube links to each other with described annular water tank with conduit; An annular collector and the conduit that is connected each serpentine tube and collector that is fixed on the shell is so that water flows between annular water tank and collector by described conduit and serpentine tube.
Patent document EP-B1-116 provides the first kind of such liquid-cooling equipment that is used for loading installation of shaft furnace in 142.Though in this known cooling devices, adopted various preventive measures and device, but it is found that, although dust and dirt are measured little but are finally still penetrated among the cooling liqs, also find the most of dirt that enters through the feed-tank upper limb or from the center charging line or from annular chamber surrounding around the rotation cage.These dirts are deposited on the sectional area that has reduced serpentine tube in the serpentine tube widely.This not only reduced cooling fluid cycling rate, increased sedimentary danger, and owing to formation of deposits insulation layer reduced cooling power.
The objective of the invention is to improve above-mentioned known liquid-cooling equipment, so that reduce dust and dirt infiltration cooling loop.
For realizing this purpose, the invention provides a kind of liquid cooling method, its essential characteristic is rare gas element or purifies the pressure of blast furnace furnace gas in being higher than stove, is lower than under the situation of pressure of the water that injects water tank and sprays into annular feed-tank.
This jet flow stream has obtained double effects.In fact, because the pressure on the water tank liquid levels is higher than the pressure in the stove, thereby has prevented or reduced the gas that is loaded with dust at least and infiltrated water tank.In addition,, thereby increased head, that is to say that the cycling rate of serpentine tube has increased, thereby cooling performance is better and reduced and form sedimentary danger in the serpentine tube because on the liquid level of water coolant, produced certain pressure.
As a kind of assist measure,, infiltrate annular chamber surrounding and reduced the gas that is loaded with dust owing to used collector as the liquid barrier between stove and the annular chamber surrounding.In addition, from the gas of stove,,, be forced through the water curtain that is used for washing gas and separates out solia particle by after the described liquid barrier no matter what.
Have settling tank in cooling loop, the solia particle in the cooling fluid is precipitated so that reuse these cooling fluids, it is favourable doing like this.
For realizing that the device that this method provides is characterised in that, annular feed-tank divides airduct to be connected with the pressurized gas pipeline by gas.The rotation cage preferably has the bottom that extends collector under the periphery and forms the gas labyrinth channel with the inwall of collector.
According to most preferred embodiment, have a circle nozzle in the shell on collector, these nozzles all produce one jet towards the fan out of rotation cage periphery, so that form a successive water curtain on collector.
This collector preferably links to each other with first bin of settling tank, and second bin of first bin and this settling tank separates with the vertical clapboard that a bottom from settling tank extends top; Second bin links to each other with water coolant water filling water source and recirculation loop.
Other characteristics of the present invention and feature, hereinafter just clearer in conjunction with corresponding accompanying drawing reading to the detailed description of embodiment, wherein:
Fig. 1 is total synoptic diagram of the refrigerating unit of the sort of type set forth of above-mentioned patent document, comprising improvement part of the present invention;
Fig. 2 is the thin portion sectional view of cooling fluid feed-tank;
Fig. 3 is the thin portion sectional view of cooling fluid collector;
Fig. 4 is the liquid curtain view that forms on collector.
Fig. 1 schematically shows the drive unit of loading installation of shaft furnace cloth skewed slot, and the liquid-cooling equipment of the sort of type that is provided in the above-mentioned file is provided this shaft furnace.
This device consists essentially of two sleeve gear devices 14 and 16, is used for making sleeve 18 around shaft furnace central shaft rotation respectively, so that cloth skewed slot (not shown) is around the rotation of shaft furnace longitudinal center line, and is used for regulating angle between this skewed slot and the longitudinal center line.See Fig. 2 with rolling bearing 22,28() realize the transmission of motion and the supporting of motor element in known manner, the application's case will not set forth in detail to this.
The chamber 26 of an annular has been determined together with turnbarrel 18 in the side of shell 24, and this annular chamber separates with shaft furnace inside by means of the cage 30 of skewed slot, and this cage and turnbarrel 18 are made one.
As known liquid-cooling equipment, spiral coil cooling tube 32 is equipped with in the outside of rotation cage 30, avoids cage 30 by conduction or radiation heat to be passed to other element-for example pass to bearing and gear.Each spiral coil cooling tube 32 links to each other with the annular feed-tank 40 that is fixed on sleeve 18 tops by linking conduit 38, thereby serpentine tube rotates around vertical axis together with feed-tank.
As known cooling devices, water coolant flows into the spherical collector of arranging around rotation cage 30 bottoms 60 by gravity through serpentine tube 32.Water coolant flow back into conduit 54 from collector 60 through settling tank 80, pumping installation 82, self-purging formula strainer 84 and cooling loop 86, supplies with annular feed-tank 40.About the details of cooling loop and the more fully information of mode of operation, can consult above-mentioned patent document EP-B1-0,116,142.
As shown in Figure 2, the upper limb of feed-tank 40 when motion not be welded to shell 24 on the coaxial circles annular groove 46,48 of last shaft collar 44 contact.Water tank 40 is sent in the circular channel 52 of water coolant in last shaft collar 44, the (see figure 1) and water-supply pipe 54 communicates with circular channel 52.
As shown in Figure 2, the slit design between the upper limb of water tank 40 and the groove 46,48 becomes the labyrinth form, so that minimizing gas and dust enter the danger that water tank 40 causes the pressure-losses of following sealed gas.Although there are these labyrinth type slits to form, people can find, the dust that the gas that rises in the stove brings still can infiltrate water tanks 40 through sleeve 18.
According to the present invention, with the blast furnace furnace gas of rare gas element or purification, for example nitrogen sprays into water tank through one or more pipe 56 under pressure, reduces the danger that dust is invaded water tank with this.A little more than the pressure in the blast furnace but be lower than under the condition of pressure of the water in the inlet pipe 54, spray into this gas, prevent that promptly gas from invading water tanks by groove 46 and 48 and not hindering water coolant again and enter water tank 40.This pressurized gas enters water tank through the annular gas-distribution pipe 58 of porous wall.
The present invention also provides a kind of method that dust is invaded annular chamber surrounding 26 that reduces, and this method also is suitable for limiting dust and enters water tank 40, avoids depositing dust on gear and bearing.In fact, between turnbarrel and stationary housing 24, certainly existed the circular clearance.Pressure surge in the stove has produced a kind of suction function between this gap is in chamber 26 and stove so, and this just impels a spot of gas that is loaded with dust to feed chamber 26.
In order to overcome this shortcoming, it is the orthogonal circular groove that collector 60 is designed to the cross section, is contained in the housing 24.The lower rim of rotation cage 30 has a vertical periphery 62, and the preglabellar field that this periphery is crossed collector 60 extends the bottom of collector 60, but does not contact with collector 60.Between the limit of collector 60 inwalls and rotation cage 30, form passage on the one hand; Interdict the periphery 62 of cages on the other hand again with the plectane 64 of a cage 30.In cage 30 rotary courses, motion in the groove 66 of plectane 64 on the inwall of collector 60.Therefore, the labyrinth that is formed by the shape of this passage and plectane 64 and groove 66 hinders gas and dust enters collector 60 in stove.In addition, may provide a kind of a kind of measure that is used for guaranteeing the liquid levels minimum level in the collector 60 again, the lower rim of periphery 62 is positioned among the liquid, between stove inside and chamber 26, form a liquid barrier whereby.
As a kind of assist measure, in an effective embodiment, a circle nozzle 68 is arranged above the outward flange of collector 60, water coolant is seen Fig. 1 through the arm 72(of master loop) spray by nozzle.As shown in Figure 4, each nozzle 68 all produces one wide fan spray towards periphery 62.Therefore, all the net effect of nozzle 68 may form a successive water curtain, covers whole collector, and guarantees to purify effectively any gas that enters collector 60 by the labyrinth.
Collector 60 is by pipeline 74 (see figure 1) that links to each other with settling tank 80.This settling tank is extended top from the bottom vertical clapboard 92 is separated into two bins 88 and 90.Be imported into storehouse 88 from the water of collector 60, solia particle can be deposited to the bottom in storehouse in storehouse 88, and the water after the clarification is only crossed dividing plate 92 just can enter second bin 90.Bin 90 links to each other with the water-supply pipe 94 that replenishes the water that is evaporated toward the loop water filling.Water 80 bottom is extracted out through the pond with pumping installation 82, and gets back to cooling loop through filter 84 in known manner.Two storehouses 88,90 of settling tank 80 can emptying by one group of valve 96, needs so in the time of particularly will removing solid sediment from storehouse 88.
What also need emphasize is that improvement provided by the present invention can easily be used for patent document EP-B1-0, the existing apparatus of type described in 116,142.
Claims (8)
1, the method that is used for cooling loading installation of shaft furnace, comprising a fixedly charging line (20) that vertically is arranged in the furnace roof center, one around the coaxial mounted turnbarrel of described charging line (20) (18), the coaxial shell (24) of described sleeve (18) outside and the substantially annular chamber (26) of delimiting by this cartridges sides of being installed in, this chamber (26) by and turnbarrel (18) all-in-one-piece rotation cage (30) separate with shaft furnace inside but isolated, a cloth skewed slot that is hinged on the rotation cage (30), one is used for making sleeve (18) and cage (30) as the loading device of individual around the drive unit of the vertical axis rotation of stove and charging line (20), use an annular feed-tank (40) that is fixed on turnbarrel (18) upper limb, its co-axial outer wall and the inwall coaxial grooves (46 on last shaft collar (44), 48) slide in, have at least an entrance of cooling water pipe (54) to pass shaft collar (44) and feed annular water tank (40), the spiral coil cooling tube that several rhizospheres are arranged around rotation cage (30), each cooling tube links to each other with described annular water tank (40) with conduit (38), an annular collector (60) and the conduit that is connected each serpentine tube and described collector (60) that is fixed on the shell (24), so that water flows between annular water tank (40) and collector (60) by described conduit and serpentine tube, to cool off this loading device, present method is characterised in that rare gas element or purifies the pressure of blast furnace furnace gas in being higher than stove, be lower than under the situation of pressure of the water that injects water tank (40) and spray into annular water tank (40).
2, in accordance with the method for claim 1, it is characterized in that collector (60) is as the liquid barrier between stove and the annular chamber surrounding (26).
3, in accordance with the method for claim 2, it is characterized in that gas from stove is forced through the continuous water curtain above the collector (60) after by described liquid barrier.
4,, it is characterized in that water coolant finishes purification in settling tank (80) according to any described method of claim 1 to 3.
5, the device of cooling loading installation of shaft furnace, comprising a fixedly charging line (20) that vertically is arranged in the furnace roof center, one around the coaxial mounted turnbarrel of described charging line (20) (18), the coaxial shell (24) of described sleeve (18) outside and the substantially annular chamber (26) of delimiting by this cartridges sides of being installed in, this chamber (26) by and turnbarrel (18) all-in-one-piece rotation cage (30) separate with shaft furnace inside but isolated, one is hinged on rotation cage (30), on the cloth skewed slot, one is used for making sleeve (18) and cage (30) as the loading device of individual around the drive unit of the vertical axis rotation of stove and charging line (20), use an annular feed-tank (40) that is fixed on turnbarrel (18) upper limb, its co-axial outer wall and the inwall coaxial grooves (46 on last shaft collar (44), 48) slide in, have at least an entrance of cooling water pipe (54) to pass shaft collar (44) and feed annular water tank (40), the spiral coil cooling tube that several rhizospheres are arranged around rotation cage (30), each cooling tube links to each other with described annular water tank (40) with conduit (38), an annular collector (60) and the conduit that is connected each serpentine tube and described collector (60) that is fixed on the shell (24), so that water flows between annular water tank (40) and collector (60) by described conduit and serpentine tube, to cool off this loading device, it is characterized in that annular feed-tank (40) is connected by the pipeline (56) that gas divides airduct (58) and at least one to feed rare gas element or purification blast furnace furnace gas.
6, according to the described device of claim 5, it is characterized in that rotating cage (30) has the bottom that extends collector (60) under the periphery (62) and forms the gas labyrinth channel with the inwall of collector.
7, according to the described device of claim 6, it is characterized in that having in the shell (24) on collector (60) a circle nozzle (68), each nozzle all produces one jet towards the fan out of rotation cage (30) periphery (62), so that form a successive water curtain on collector (60).
8, according to the described device of claim 6, it is characterized in that collector (60) links to each other with first bin (88) of settling tank (80), second bin (90) of first bin and this settling tank (80) separates with a vertical clapboard (92) that extends top from the settling tank bottom, and second bin (90) links to each other with water coolant water filling water source and water coolant recirculation loop.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU86818 | 1987-03-24 | ||
| LU86818A LU86818A1 (en) | 1987-03-24 | 1987-03-24 | METHOD AND DEVICE FOR COOLING A LOADING INSTALLATION OF A TANK OVEN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN88101377A CN88101377A (en) | 1988-10-05 |
| CN1012736B true CN1012736B (en) | 1991-06-05 |
Family
ID=19730891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88101377.3A Expired CN1012736B (en) | 1987-03-24 | 1988-03-23 | Process and apparatus for cooling loading installation of shaft furnace |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP2832350B2 (en) |
| CN (1) | CN1012736B (en) |
| DE (1) | DE3809533C2 (en) |
| FR (1) | FR2613052B1 (en) |
| GB (1) | GB2202616B (en) |
| IT (1) | IT1216032B (en) |
| LU (1) | LU86818A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU90179B1 (en) * | 1997-11-26 | 1999-05-27 | Wurth Paul Sa | Method for cooling a charging device of a shaft furnace |
| LU90794B1 (en) * | 2001-06-26 | 2002-12-27 | Wurth Paul Sa | Loading device of a shaft furnace |
| EP1801241A1 (en) * | 2005-12-23 | 2007-06-27 | Paul Wurth S.A. | A rotary charging device for a shaft furnace equipped with a cooling system |
| KR101614870B1 (en) * | 2015-02-27 | 2016-04-22 | 주식회사 포스코 | Apparatus for removing sediment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5339842B2 (en) * | 1974-05-29 | 1978-10-24 | ||
| JPS58183922A (en) * | 1982-04-21 | 1983-10-27 | Isao Minagawa | Method and apparatus for removing environmentally pollutive dust |
| LU84520A1 (en) * | 1982-12-10 | 1984-10-22 | Wurth Paul Sa | COOLING DEVICE FOR A LOADING INSTALLATION OF A TANK OVEN |
| LU84521A1 (en) * | 1982-12-10 | 1984-10-22 | Wurth Paul Sa | COOLING DEVICE FOR A LOADING INSTALLATION OF A TANK OVEN |
-
1987
- 1987-03-24 LU LU86818A patent/LU86818A1/en unknown
-
1988
- 1988-03-09 IT IT8819702A patent/IT1216032B/en active
- 1988-03-18 FR FR888803503A patent/FR2613052B1/en not_active Expired
- 1988-03-21 GB GB8806656A patent/GB2202616B/en not_active Expired - Lifetime
- 1988-03-22 DE DE3809533A patent/DE3809533C2/en not_active Expired - Fee Related
- 1988-03-23 JP JP63070833A patent/JP2832350B2/en not_active Expired - Lifetime
- 1988-03-23 CN CN88101377.3A patent/CN1012736B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| LU86818A1 (en) | 1988-11-17 |
| GB2202616A (en) | 1988-09-28 |
| JPS63259005A (en) | 1988-10-26 |
| GB2202616B (en) | 1990-08-15 |
| IT8819702A0 (en) | 1988-03-09 |
| FR2613052A1 (en) | 1988-09-30 |
| FR2613052B1 (en) | 1989-12-29 |
| DE3809533A1 (en) | 1988-10-06 |
| CN88101377A (en) | 1988-10-05 |
| GB8806656D0 (en) | 1988-04-20 |
| JP2832350B2 (en) | 1998-12-09 |
| DE3809533C2 (en) | 1996-10-02 |
| IT1216032B (en) | 1990-02-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |