CN100397019C - Protection for elephant trunk of feeding, material at feed end of rotary kiln for calcining charcoal, and equipment for returning and unloading product - Google Patents
Protection for elephant trunk of feeding, material at feed end of rotary kiln for calcining charcoal, and equipment for returning and unloading product Download PDFInfo
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- CN100397019C CN100397019C CNB2005102005246A CN200510200524A CN100397019C CN 100397019 C CN100397019 C CN 100397019C CN B2005102005246 A CNB2005102005246 A CN B2005102005246A CN 200510200524 A CN200510200524 A CN 200510200524A CN 100397019 C CN100397019 C CN 100397019C
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- rotary kiln
- elephant trunk
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Abstract
The present invention discloses the protection for a feed elephant trunk at the feed end of a carbon rotary kiln and a material returning and unloading device. A burning chamber of the present invention is connected with an insulated chamber, a manhole, a discharge hole and a chute hole are arranged on the insulated chamber, and the feed end of the rotary kiln extends into the insulated chamber; the outer side of the feed end of the rotary kiln is provided with a sealing device which is connected with the end surface of the insulated chamber, and a feed chute extends into the feed end opening of the rotary kiln through the chute hole; the lower part of the discharge hole is connected with the chute, and a discharge valve is arranged below the chute and is connected with the chute. The present invention can protect the feed chute, prolong service life of the feed chute, discharge returning materials of a kiln tail in time, and prevent materials from depositing in the burning chamber. The present invention can increase running rate of a petroleum coke calcining system, and can also reduce maintenance cost.
Description
Technical field:
The present invention relates to the calciner of a kind of carbon product production Jiao of PetroChina Company Limited. and other raw material, particularly relate to a kind of configuration that is connected of feed end with its later equipment of rotary kiln.
Background technology:
Carbon-calcining rotary kiln is a large amount of is used to calcine the retard petroleum coke that contains the high heating value fugitive constituent and more fine granules is arranged.In the calcining retard petroleum coke, the temperature of burning zone is about 1200 ℃, and the flue-gas temperature of feed end is about 600 ℃.At the rotary kiln feed end, the configuration of Cai Yonging for many years is that the kiln tail of rotary kiln directly is connected with combustion chamber (crying heavy grey chamber again), is with the feed elephant trunk of water-cooling jacket to have long part to pass to sink grey chamber to enter the kiln tail.The defective of this configuration is:
(1) in the calcining petroleum coke process, part not have the fugitive constituent that burns and is burnt in the combustion chamber by the coke powder that flue gas is taken away in rotary kiln, thereby makes the temperature of combustion chamber usually about 1000 ℃ even higher.The feed elephant trunk is being subjected under the condition of hyperthermia radiation, and life cycle is shorter, needs to remove production line and overhaul and reinstall after damage, perhaps more renews part
(2) in the calcining petroleum coke process,, usually there is partial material to return out and falls into the combustion chamber from the kiln tail owing to be subjected to the restriction of calcine technology technical conditions and petroleum coke raw material quality requirements (as moisture and granularmetric composition etc.).This part material is piled up gradually in the combustion chamber, after a certain amount of, needs manually it to be drawn off from manhole.
Two kinds of above operations all need to stop kiln and stop production, and treat that system cools carries out behind normal temperature, restart calcination system then.Consequently cause the running rate of system equipment to reduce, the total output of system reduces, and increases the energy consumption that restarts, and increases the maintenance workload and the consumption of equipment.
Summary of the invention:
The objective of the invention is to: behind the carbon-calcining rotary kiln feed end, heat-proof device is set, the high-temperature flue gas of alleviating the combustion chamber prolongs feed elephant trunk service life and is convenient to drawing off of rotary kiln feed end returning charge the heat radiation of feed elephant trunk, simple in structure, invent easy to operate.
The present invention constitutes like this: it comprises combustion chamber (1), combustion chamber (1) is connected with heat-insulating room (5), manhole (6), relief hole (7) and elephant trunk hole (10) are arranged on heat-insulating room (5), rotary kiln (2) feed end stretches into heat-insulating room (5), in the outside of rotary kiln (2) feed end and what be connected with heat-insulating room (5) end face is sealing device (4), feed elephant trunk (3) stretches into the charging port of rotary kiln (2) by elephant trunk hole (10), connection elephant trunk (8) below relief hole (7), what connect under elephant trunk (8) is discharge valve (9).
Heat-insulating room (5) is that the steel of inner lining refractory is columnar structured, and length is generally 3 ~ 4 meters; Advancing of rotary kiln (2)
The material port diameter is less than the diameter of heat-insulating room (5); Be connected with ash releasing tube (11) in the bottom of sealing device (4), ash releasing tube (11) inserts elephant trunk (8).
The present invention has increased heat-insulating room (5) as changeover portion between the feed end of rotary kiln (2) and combustion chamber (1), and on heat-insulating room (5), be provided with by relief hole (7) and the elephant trunk (8) that connects thereof, the device for discharging that Weight type discharge valve (9) is formed, thereby avoid of the heat radiation of the high-temperature flue gas of combustion chamber (perhaps heavy grey chamber) to the feed elephant trunk, prolong the service life of feed elephant trunk, and make things convenient for the returning charge discharging of feed end, final purpose is to improve the running rate of calcination system, reduces maintenance cost.
This device in the operating technical process of calcining petroleum coke system is:
In normal calcination process, the flue-gas temperature that kiln tail feed end is discharged is about 600 ℃; In changeover portion, because feed elephant trunk and each part of device for discharging all are airtight installation, locate negative pressure (under little approximately-100Pa) condition at this, amount of air drawn is few outside system, not having can be for the oxygen of contained fugitive constituent in the flue gas and coke breeze burning, thereby the flue-gas temperature in changeover portion is near the flue-gas temperature of kiln tail discharge, just when flue gas arrives the combustion chamber, because toward combustion chamber supply air, just make fugitive constituent and coke powder burning in the flue gas, combustion chamber temperature is reached about 1000 ℃.
Compare with structure in the past, because the combustion chamber is far away from the feed elephant trunk, its caloradiance to the feed elephant trunk reduces greatly, it is short and be in the flue gas of changeover portion lower temperature (low more than 300 ℃ such as condition shown in Figure 1) that the feed elephant trunk is exposed to length in the flue gas in addition, thereby the residing condition of work of feed elephant trunk has greatly improved, and can prolong greatly the service life of feed elephant trunk.
In calcination process, the relief hole (7) that the material that is returned out by kiln tail feed end directly falls into heat-insulating room (5) enters elephant trunk (8).Because the diameter of heat-insulating room (5) is much larger than the diameter of kiln tail feed end, its flue gas flow rate is far below the flow velocity of kiln tail feed end, even also can fall into relief hole (7) than the burnt grain of small grain size.Like this, it is burned to have only few coke powder to be taken to the combustion chamber by flue gas, and can not deposit material at the combustion chamber collection.Sometimes, have a spot of coke powder and discharge, be connected with elephant trunk (8), make its elephant trunk that enters discharge device (8) with ash releasing tube (11) from the sealing device (4) of kiln tail.Enter the material of discharge device elephant trunk (8), arrive a certain amount of after because the effect of gravity, then discharge and enter mobile hopper and transport from the Weight type discharge valve.Because the sealing function of Weight type discharge valve when discharging and not discharging, can not suck air and enter discharge device, thereby avoided making the oxidized or combustion-supporting combustible wherein of coke wherein.
The invention has the beneficial effects as follows: both can protect the service life of feed elephant trunk, prolongation feed elephant trunk, the returning charge of kiln tail in time can have been drawn off, avoids the combustion chamber buildup again; The running rate of calcining petroleum coke system not only can be improved, maintenance cost can also be reduced.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is the A-A cutaway view of accompanying drawing 1.
The specific embodiment:
Embodiments of the invention: according to the production capacity that planning and designing are determined, design and make carbon-calcining rotary kiln 2 and combustion chamber 1 makes the charging port diameter of rotary kiln 2 less than the bore of combustion chamber 1, less than the diameter of heat-insulating room 5; It is columnar structured that heat-insulating room 5 is made as the steel of inner lining refractory, and 4 meters of length are made manhole 6, relief hole 7 and elephant trunk hole 10 on heat-insulating room 5; Heat-insulating room 5 combustion chambers 1 are connected, and the feed end of rotary kiln 2 stretches into heat-insulating room 5, and feed elephant trunk 3 stretches into the charging port of rotary kiln 2 by elephant trunk hole 10; Sealing device 4 is installed in outside at rotary kiln 2 feed ends, sealing device 4 also is connected with the end face of heat-insulating room 5 and seals, and connection elephant trunk 8 below relief hole 7 connects discharge valve 9 under elephant trunk 8, bottom at sealing device 4 connects ash releasing tube 11, incorporates ash releasing tube 11 into elephant trunk 8.
Claims (4)
1. the heat-proof device of a carbon-calcining rotary kiln feed end, it comprises combustion chamber (1), it is characterized in that: combustion chamber (1) is connected with heat-insulating room (5), manhole (6) is arranged on heat-insulating room (5), relief hole (7) and elephant trunk hole (10), rotary kiln (2) feed end stretches into heat-insulating room (5), in the outside of rotary kiln (2) feed end and what be connected with heat-insulating room (5) end face is sealing device (4), feed elephant trunk (3) stretches into the charging port of rotary kiln (2) by elephant trunk hole (10), connection elephant trunk (8) below relief hole (7), what connect under elephant trunk (8) is discharge valve (9).
2. the heat-proof device of carbon-calcining rotary kiln feed end according to claim 1 is characterized in that: heat-insulating room (5) is columnar structured for the steel of inner lining refractory, and length is 3 ~ 4 meters.
3. the heat-proof device of carbon-calcining rotary kiln feed end according to claim 1 is characterized in that: the charging port diameter of rotary kiln (2) is less than the diameter of heat-insulating room (5).
4. the heat-proof device of carbon-calcining rotary kiln feed end according to claim 1 is characterized in that: be connected with ash releasing tube (11) in the bottom of sealing device (4), ash releasing tube (11) inserts elephant trunk (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005102005246A CN100397019C (en) | 2005-09-07 | 2005-09-07 | Protection for elephant trunk of feeding, material at feed end of rotary kiln for calcining charcoal, and equipment for returning and unloading product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005102005246A CN100397019C (en) | 2005-09-07 | 2005-09-07 | Protection for elephant trunk of feeding, material at feed end of rotary kiln for calcining charcoal, and equipment for returning and unloading product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1760615A CN1760615A (en) | 2006-04-19 |
| CN100397019C true CN100397019C (en) | 2008-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005102005246A Active CN100397019C (en) | 2005-09-07 | 2005-09-07 | Protection for elephant trunk of feeding, material at feed end of rotary kiln for calcining charcoal, and equipment for returning and unloading product |
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| Country | Link |
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| CN (1) | CN100397019C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI128199B (en) * | 2015-04-10 | 2019-12-13 | Nordautomation Oy | Arrangement in a rotary kiln and method for guiding air to a rotary kiln |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133022A (en) * | 1980-03-21 | 1981-10-17 | Ishikawajima Harima Heavy Ind Co Ltd | Calcining device for powder material |
| JPH11188259A (en) * | 1997-12-26 | 1999-07-13 | Union Service:Kk | Waste activated carbon regenerator |
| US6241514B1 (en) * | 1999-09-15 | 2001-06-05 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Oxidant-driven dust recycling process and device for rotary kilns |
| CN1473784A (en) * | 2003-08-08 | 2004-02-11 | 余世华 | Large tilt rotary kiln cement calcining process and rotary kiln |
-
2005
- 2005-09-07 CN CNB2005102005246A patent/CN100397019C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56133022A (en) * | 1980-03-21 | 1981-10-17 | Ishikawajima Harima Heavy Ind Co Ltd | Calcining device for powder material |
| JPH11188259A (en) * | 1997-12-26 | 1999-07-13 | Union Service:Kk | Waste activated carbon regenerator |
| US6241514B1 (en) * | 1999-09-15 | 2001-06-05 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Oxidant-driven dust recycling process and device for rotary kilns |
| CN1473784A (en) * | 2003-08-08 | 2004-02-11 | 余世华 | Large tilt rotary kiln cement calcining process and rotary kiln |
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| Publication number | Publication date |
|---|---|
| CN1760615A (en) | 2006-04-19 |
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Owner name: GUIYANG ALUMINUM AND MAGNESIUM DESIGN INSTITUTE CO Free format text: FORMER NAME: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
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| CP03 | Change of name, title or address |
Address after: 550081 Guiyang Province, Jinyang New District, Zhu Zhu Road, No. 2 Patentee after: Guiyang Aluminum & Magnesium Design Institute Co., Ltd. Address before: 550004 No. 208, Beijing Road, Guiyang, Guizhou Patentee before: Guiyang Aluminium and Magnesium Design Inst. |