CN102798285A - Internal cooling device of oxidized pellet shaft furnace - Google Patents
Internal cooling device of oxidized pellet shaft furnace Download PDFInfo
- Publication number
- CN102798285A CN102798285A CN2012103021903A CN201210302190A CN102798285A CN 102798285 A CN102798285 A CN 102798285A CN 2012103021903 A CN2012103021903 A CN 2012103021903A CN 201210302190 A CN201210302190 A CN 201210302190A CN 102798285 A CN102798285 A CN 102798285A
- Authority
- CN
- China
- Prior art keywords
- cooling
- shaft furnace
- ajutage
- air feed
- collection wind
- 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.)
- Granted
Links
Images
Landscapes
- Furnace Details (AREA)
Abstract
The invention provides an internal cooling device of an oxidized pellet shaft furnace, comprising a cooling zone shell of the pellet shaft furnace, wherein a plurality of primary cooling air supply branch tubes are uniformly arranged on the circumferential ring of the upper part of the sidewall of the cooling zone shell; a plurality of secondary cooling air supply branch tubes are uniformly arranged on the circumferential ring of the lower part of the sidewall of the cooling zone shell; each of the primary cooling air supply branch tubes and each of the secondary cooling air supply branch tubes are connected with an air blower via pipelines; a cooling air collection beam is installed in the cooling zone shell between the primary cooling air supply branch tubes and the secondary cooling air supply branch tubes; a plurality of air collection holes are formed in the bottom surface of the cooling air collection beam; both ends of the cooling air collection beam are connected with an air collection main tube via pipelines; and the air collection main tube is connected with a negative-pressure fan. According to the invention, the ore discharge temperature of the pellet shaft furnace can be effectively reduced, the service life of equipment can be prolonged, and the heat carried by pellet ores can be recycled simultaneously.
Description
Technical field
The present invention relates to a kind of acid pellet shaft furnace, the built-in cooling device of specifically a kind of acid pellet shaft furnace.
Background technology
In acid pellet shaft furnace production process; After the pellet heat exchange that cooling air that blasts in the shaft furnace salband and roasting are good heats up, mix, on shaft furnace oven dry bed, realize the drying of going into the stove green-ball, warm moisture about 8.5% with shaft furnace combustion chamber gas-fired product; For guaranteeing integrality into the stove green-ball; High-temperature gas flow and temperature to through oven dry bed have the requirement of strict process operating duty, thereby the cooling air quantity that blasts the acid pellet shaft furnace needs strict control, cause the good pellet of roasting can't with the abundant heat exchange of cooling air; Finally cause palletizing shaft furnace ore discharge temperature up to more than～600 ℃; Hot pellet all constitutes bigger harm to discaling roll, discharger and the follow-up transporting equipment of acid pellet shaft furnace, and pellet sensible heat nature approach exhaustion can't be recycled its heat simultaneously.
Summary of the invention
The purpose of this invention is to provide the built-in cooling device of a kind of acid pellet shaft furnace, it can effectively reduce palletizing shaft furnace ore discharge temperature, prolongs the service life of equipment, can recycle the heat that pellet carries simultaneously.
The present invention is for realizing above-mentioned purpose; Realize through following technical scheme: comprise palletizing shaft furnace salband housing; Border, salband housing sidewall top evenly is provided with a plurality of air feed arms that once cool off, and border, salband housing sidewall bottom evenly is provided with a plurality of secondary cooling air feed arms, and each once cools off the air feed arm and all is connected with air blast through pipeline with secondary cooling air feed arm; Once cool off in the salband housing between air feed arm and the secondary cooling air feed arm cooling Ji Fengliang is installed; Cooling collection wind soffit is provided with a plurality of collection wind hole, and cooling collection Feng Liang two ends all are connected with collection wind house steward through pipeline, and collection wind house steward is connected with negative-pressure air fan.Each once cool off the air feed arm all with once cool off to spare airduct and be connected; Each secondary cooling air feed arm all is connected with the even airduct of secondary cooling; Once even airduct of cooling and the even airduct of secondary cooling all are circulating lines, and once the even airduct of cooling all is connected with air blast through pipeline with the even airduct of secondary cooling.Once the even airduct horizontal direction both sides of cooling are connected with second ajutage with first ajutage respectively; The even airduct horizontal direction both sides of secondary cooling are connected with the 4th ajutage with the 3rd ajutage respectively; First ajutage, second ajutage, the 3rd ajutage and the 4th ajutage all are connected with the header pipe, the last installation of header pipe air blast.Collection wind house steward goes up sack cleaner is installed.Cooling collection wind beam outer wall is enclosed with refractory layer.Cooling collection wind top surface of the beam is provided with cooling collection wind beam protective layer, and cooling collection wind beam protective layer is positive pentagonal prism type, and positive one of them rectangular surfaces of pentagonal prism is connected with cooling collection wind top surface of the beam, and the width of rectangular surfaces equates with cooling collection wind top surface of the beam width.
The invention has the advantages that: can be on the basis that does not increase oven dry bed place high-temperature gas flow; Be multiplied cooling air quantity with the pellet heat exchange effectively reduces palletizing shaft furnace ore discharge temperature, prolongs the service life of equipment; Can recycle the heat that pellet carries simultaneously; Pellet and cooling air heat exchange are abundant, and cooling Ji Fengliang does not directly contact with pellet, can not receive pellet collision, friction etc.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is the A-A sectional structure sketch map of Fig. 1.
The specific embodiment
The built-in cooling device of a kind of acid pellet shaft furnace of the present invention; Comprise palletizing shaft furnace salband housing 1; Salband housing 1 side wall upper part border evenly is provided with a plurality of air feed arms 2 that once cool off; Salband housing 1 lower sidewall border evenly is provided with a plurality of secondary cooling air feed arms 3; Respectively once cool off air feed arm 2 and all be connected with air blast 4 through pipeline with secondary cooling air feed arm 3, once cool off to install in the salband housing 1 between air feed arm 2 and the secondary cooling air feed arm 3 and cool off collection wind beam 5, cooling collection wind beam 5 bottom surfaces are provided with a plurality of collection wind hole 6; Cooling collection wind beam 5 two ends all are connected with collection wind house steward 15 through pipeline, and collection wind house steward 15 is connected with negative-pressure air fan 7.Once cool off air feed arm 2 and in palletizing shaft furnace salband housing 1, feed cooling air simultaneously with secondary cooling air feed arm 3; Rise to oven dry after the cooling air that cools off once that air feed arm 2 feeds and the pellet heat exchange and bed carry out drying, preheating going into the stove green-ball; Behind the secondary cooling air and pellet heat exchange that secondary cooling air feed arm 3 feeds, from the collection wind hole 6 entering cooling collection wind beams 5 of cooling collection wind beam 5 bottom surfaces, and through collection wind house steward 15 collections; Being convenient to heat transmission equipment reclaims the heat of high-temperature gas; The present invention is on the basis that is not increasing oven dry bed place's high-temperature gas flow, and the cooling air quantity with the pellet heat exchange of can being multiplied effectively reduces palletizing shaft furnace ore discharge temperature; Actual measurement through after a while can be known: after adopting the present invention; Palletizing shaft furnace ore discharge temperature can be reduced to 100 ℃-150 ℃, can not constitute harm to discaling roll, discharger and the follow-up transporting equipment and the miscellaneous equipment of acid pellet shaft furnace, can significantly prolong the service life of equipment.
The present invention is even in order to ensure the wind supply quantity of each air feed arm; Can once cool off air feed arm 2 all is connected with the even airduct 8 of cooling once at each; Each secondary cooling air feed arm 3 all is connected with the even airduct 9 of secondary cooling; Once the even airduct 8 of cooling all is circulating lines with the even airduct 9 of secondary cooling, and once the even airduct 8 of cooling all is connected with air blast 4 through pipeline with the even airduct 9 of secondary cooling.The pressure that once the even airduct 8 of cooling and the even airduct 9 of secondary cooling can balanced each air feed arms makes cooling air feed salband housing 1 uniformly, guarantees the abundant heat exchange of pellet and cooling air.
The present invention is even for the wind supply quantity of further guaranteeing each air feed arm; Can adopt following structure: once the even airduct 8 horizontal direction both sides of cooling are connected with second ajutage 11 with first ajutage 10 respectively; The even airduct 9 horizontal direction both sides of secondary cooling are connected with the 4th ajutage 13 with the 3rd ajutage 12 respectively; First ajutage 10, second ajutage 11, the 3rd ajutage 12 all are connected with header pipe 14 with the 4th ajutage 13, and air blast 4 is installed on the header pipe 14.Once cool off even airduct 8 and can guarantee that with the mode of air intake of even airduct 9 employing both sides while of secondary cooling pressure is average in the even airduct circulating line everywhere, make cooling air feed salband housing 1 more uniformly, further guarantee the abundant heat exchange of pellet and cooling air.
The present invention is in order to prevent that cooling off the impurity that contains in the hot blast of collection wind beam 5 collections gets into heat-exchanger rig, can install sack cleaner 16 on collection wind house steward 15.
The present invention can be enclosed with refractory layer 18 at cooling collection wind beam 5 outer walls in order to improve the heat resistance of cooling collection wind beam 5.
The present invention damages in receiving pellet collision, friction process for a long time in order to prevent cooling collection wind beam 5; Can cooling collection wind beam protective layer 17 be set at cooling collection wind beam 5 end faces; Cooling collection wind beam protective layer 17 is positive pentagonal prism type; Positive one of them rectangular surfaces of pentagonal prism is connected with cooling collection wind beam 5 end faces, and the width of rectangular surfaces equates with cooling collection wind beam 5 end face width.The collection wind beam protective layer 17 of positive pentagonal prism shape can be shunted the pellet that cooling collection wind beam 5 tops fall to both sides; The pellet that the shunting back vertically falls can not contact with cooling collection wind beam 5; Prevent that cooling collection wind beam 5 receives pellet collision, friction damage, helps prolonging the service life of equipment.
Claims (6)
1. built-in cooling device of acid pellet shaft furnace; Comprise palletizing shaft furnace salband housing (1); It is characterized in that: salband housing (1) side wall upper part border evenly is provided with a plurality of air feed arms (2) that once cool off; Salband housing (1) lower sidewall border evenly is provided with a plurality of secondary cooling air feed arms (3); Respectively once cool off air feed arm (2) and all be connected with air blast (4) through pipeline with secondary cooling air feed arm (3), once cool off to install in the salband housing (1) between air feed arm (2) and the secondary cooling air feed arm (3) and cool off Ji Fengliang (5), cooling Ji Fengliang (5) bottom surface is provided with a plurality of collection wind holes (6); Cooling Ji Fengliang (5) two ends all are connected with collection wind house steward (15) through pipeline, and collection wind house steward (15) is connected with negative-pressure air fan (7).
2. the built-in cooling device of a kind of acid pellet shaft furnace according to claim 1; It is characterized in that: each once cool off air feed arm (2) all with once cool off to spare airduct (8) and be connected; Each secondary cooling air feed arm (3) all is connected with the even airduct (9) of secondary cooling; Once even airduct (8) of cooling and the even airduct (9) of secondary cooling all are circulating lines, and once the even airduct (8) of cooling all is connected with air blast (4) through pipeline with the even airduct (9) of secondary cooling.
3. the built-in cooling device of a kind of acid pellet shaft furnace according to claim 2; It is characterized in that: once even airduct (8) the horizontal direction both sides of cooling are connected with second ajutage (11) with first ajutage (10) respectively; Even airduct (9) the horizontal direction both sides of secondary cooling are connected with the 4th ajutage (13) with the 3rd ajutage (12) respectively; First ajutage (10), second ajutage (11), the 3rd ajutage (12) and the 4th ajutage (13) all are connected with header pipe (14), and header pipe (14) goes up air blast (4) is installed.
4. the built-in cooling device of a kind of acid pellet shaft furnace according to claim 2 is characterized in that: collection wind house steward (15) goes up sack cleaner (16) is installed.
5. the built-in cooling device of a kind of acid pellet shaft furnace according to claim 1 is characterized in that: cooling Ji Fengliang (5) outer wall is enclosed with refractory layer (18).
6. according to claim 1 or the built-in cooling device of 5 described a kind of acid pellet shaft furnaces; It is characterized in that: cooling Ji Fengliang (5) end face is provided with cooling collection wind beam protective layer (17); Cooling collection wind beam protective layer (17) is positive pentagonal prism type; Positive one of them rectangular surfaces of pentagonal prism is connected with cooling Ji Fengliang (5) end face, and the width of rectangular surfaces equates with cooling Ji Fengliang (5) end face width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302190.3A CN102798285B (en) | 2012-08-23 | 2012-08-23 | Internal cooling device of oxidized pellet shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302190.3A CN102798285B (en) | 2012-08-23 | 2012-08-23 | Internal cooling device of oxidized pellet shaft furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102798285A true CN102798285A (en) | 2012-11-28 |
| CN102798285B CN102798285B (en) | 2014-10-22 |
Family
ID=47197492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210302190.3A Active CN102798285B (en) | 2012-08-23 | 2012-08-23 | Internal cooling device of oxidized pellet shaft furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102798285B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3836131A (en) * | 1973-12-26 | 1974-09-17 | Mildrex Corp | Apparatus for cooling a moving bed of solid, gas permeable particles |
| CN2301690Y (en) * | 1997-05-22 | 1998-12-23 | 南京钢铁集团有限公司 | Internal secondary cooling device for shaft furnace |
| CN201942616U (en) * | 2011-02-17 | 2011-08-24 | 刘义务 | Internal combustion and beam type vertical lime kiln |
| CN202853336U (en) * | 2012-08-23 | 2013-04-03 | 济钢集团国际工程技术有限公司 | Oxidation pallet shaft furnace internally-arranged cooling device |
-
2012
- 2012-08-23 CN CN201210302190.3A patent/CN102798285B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3836131A (en) * | 1973-12-26 | 1974-09-17 | Mildrex Corp | Apparatus for cooling a moving bed of solid, gas permeable particles |
| CN2301690Y (en) * | 1997-05-22 | 1998-12-23 | 南京钢铁集团有限公司 | Internal secondary cooling device for shaft furnace |
| CN201942616U (en) * | 2011-02-17 | 2011-08-24 | 刘义务 | Internal combustion and beam type vertical lime kiln |
| CN202853336U (en) * | 2012-08-23 | 2013-04-03 | 济钢集团国际工程技术有限公司 | Oxidation pallet shaft furnace internally-arranged cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102798285B (en) | 2014-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101857383B (en) | Beam limekiln | |
| CN104913652B (en) | A kind of method of Shaft Furnace Pelletizing Process grog waste heat recovery and device thereof | |
| CN104501548A (en) | Penetration type hot air drying furnace | |
| CN106225487A (en) | A kind of vertical cooling of agglomerates of sintered pellets and sintering waste heat utilization system | |
| CN101988148B (en) | Energy-saving stainless steel wire hydrogen retreat furnace | |
| CN202350302U (en) | Rice husk combustion hot-blast stove | |
| CN202054875U (en) | Energy-saving annealing furnace | |
| CN103063044B (en) | Rotary hearth furnace smoke waste heat utilization system and rotary hearth furnace fume afterheat Application way | |
| CN203274477U (en) | Whole-heating jacket of external heating rotary furnace | |
| CN103335514A (en) | Rotary kiln device provided with energy recovery equipment | |
| CN202853336U (en) | Oxidation pallet shaft furnace internally-arranged cooling device | |
| CN102798285A (en) | Internal cooling device of oxidized pellet shaft furnace | |
| CN203671903U (en) | Four-stroke-type coal-fired hot air furnace | |
| CN103234206B (en) | Recycling method and recycling device of fire coal high temperature flue gas | |
| CN202938611U (en) | High-efficiency energy-saving environment-friendly vertical type hot-air stove | |
| CN205448287U (en) | Many fuel heat pipe indirect heating hot -blast furnace | |
| CN103471240A (en) | Temperature controlled type hot-blast stove | |
| CN208983854U (en) | A kind of compound kiln of splitlevel energy conservation | |
| CN205980817U (en) | System is used multipurposely to vertical cooling of sintering and pelletizing and sintering waste heat | |
| CN105466008B (en) | Multi fuel heat pipe indirect-heating hot air stove | |
| CN202630586U (en) | Vertical type drying machine with externally-arranged hot blast heater | |
| CN104880091B (en) | Energy saving and environment friendly new-type annular kiln | |
| CN213335593U (en) | Steam treatment system for shaft furnace burden gallery | |
| CN204694089U (en) | Annular kiln modified node method | |
| CN102095192A (en) | Lignite combustion boiler of power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |