CN113237326A - Rotary kiln waste heat utilization device - Google Patents
Rotary kiln waste heat utilization device Download PDFInfo
- Publication number
- CN113237326A CN113237326A CN202110468027.3A CN202110468027A CN113237326A CN 113237326 A CN113237326 A CN 113237326A CN 202110468027 A CN202110468027 A CN 202110468027A CN 113237326 A CN113237326 A CN 113237326A
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- China
- Prior art keywords
- kiln
- water inlet
- water
- dust removal
- waste heat
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Classifications
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- 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
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/34—Arrangements of heating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a rotary kiln waste heat utilization device, which relates to the technical field of rotary kilns and comprises the following components: the kiln comprises a kiln body, a kiln head, a plurality of first water inlet pipes, a water inlet disc, a plurality of water outlet pipes and a water outlet disc, wherein a feed port and a discharge port are formed in two ends of the kiln body respectively, and a plurality of through grooves are annularly distributed on the wall of the kiln body; the kiln head is arranged at one end of the kiln body discharge port, and a smoke exhaust pipe is arranged at the top of the kiln head; the first water inlet pipes are respectively communicated with one end of the through groove; the water inlet disc is of an annular structure, a plurality of first water inlet pipes are annularly distributed on the water inlet disc, the water inlet disc is rotatably connected with a rotating ring, and a second water inlet pipe is arranged on the rotating ring; one end of each of the water outlet pipes is communicated with the other end of the through groove, and the other ends of the water outlet pipes are annularly distributed on the water outlet tray. The invention can heat the water and convey the water to other places needing hot water through the waste heat on the kiln body, thereby improving the utilization rate of the waste heat on the rotary kiln.
Description
Technical Field
The invention relates to the technical field of rotary kilns, in particular to a rotary kiln waste heat utilization device.
Background
The main equipment of the metallurgical lime calcining system is a rotary kiln, the fuel is bituminous coal, the bituminous coal is ground into pulverized coal with the fineness of about 200 meshes through a vertical mill, and the pulverized coal is blown into a combustor in the rotary kiln through a metering device through power air to be combusted. According to the calculation of a thermal theory, 8-10Nm3 of air is needed for the complete combustion of each kilogram of coal powder; the production line of 800 tons of active lime produced per day has the exhaust emission of about 200000Nm3/h per hour; the temperature of the waste gas is 160-200 ℃. At present, the waste heat on the domestic rotary kiln is not fully utilized, so that partial heat energy is wasted.
Disclosure of Invention
In view of this, the present invention provides a device for utilizing waste heat of a rotary kiln, which is used to improve the utilization of the waste heat of the rotary kiln.
Based on the above purpose, the present invention provides a rotary kiln waste heat utilization device, which comprises:
the kiln comprises a kiln body, a kiln head, a plurality of first water inlet pipes, a water inlet disc, a plurality of water outlet pipes and a water outlet disc, wherein,
the kiln comprises a kiln body and a kiln cover, wherein a feed inlet and a discharge outlet are respectively formed in two ends of the kiln body, and a plurality of through grooves are annularly distributed on the wall of the kiln body;
the kiln head is arranged at one end of the kiln body discharge port, and a smoke exhaust pipe is arranged at the top of the kiln head;
the first water inlet pipes are respectively communicated with one end of the through groove;
the water inlet disc is of an annular structure, a plurality of first water inlet pipes are annularly distributed on the water inlet disc, the water inlet disc is rotatably connected with a rotating ring, and a second water inlet pipe is arranged on the rotating ring;
one end of each of the water outlet pipes is communicated with the other end of the through groove, and the other ends of the water outlet pipes are annularly distributed on the water outlet tray.
Optionally, one end of the smoke exhaust pipe is provided with a drying part, and the drying part is used for drying the molded coal.
Optionally, the drying part comprises a drying box, a smoke exhaust port is arranged at the lower end of the drying box, a plurality of groups of support frames are arranged in the drying box, the support frames are used for placing molded coal, and a plurality of through holes are formed in the support frames.
Optionally, a plurality of condenser pipes are arranged in the drying box, one end of each condenser pipe is used for being communicated with an external water source, the other end of each condenser pipe is connected with a header pipe, and the header pipe is communicated with the water inlet pipe.
Optionally, a dust removal part is connected in series to the smoke exhaust pipe, and the dust removal part is used for reducing dust in smoke.
Optionally, dust removal portion includes the dust removal case, the dust removal case concatenates on the pipe of discharging fume, the dust removal incasement dislocation is equipped with a plurality of hang plates, the top of dust removal case is equipped with the spray pipe, the dust removal case rotates and is connected with the roof-rack, dust removal case transmission is connected with drive division, drive division is used for the drive the dust removal case rotates.
Optionally, the drive division includes the motor, be equipped with the driving gear in the axis of rotation of motor, the driving gear meshing has driven gear, driven gear cup joints on the dust removal case.
During the operation, water enters into the water inlet tray from the second inlet tube, then enters into logical groove through a plurality of first inlet tubes, carries out the heat transfer operation with the kiln body, absorbs the heat on the kiln body and supplies water and heat, and the hot water after the heating flows out through outlet pipe and play water tray, carries other hot-water-needing places.
Therefore, the device can convey the water to other places needing hot water after heating the water through the waste heat on the kiln body, and the utilization rate of the waste heat on the rotary kiln is improved.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.
FIG. 1 is a schematic structural diagram of a waste heat utilization device according to an embodiment of the present invention;
fig. 2 is a side sectional view of a kiln body according to an embodiment of the invention.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.
It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The embodiment of the invention provides a waste heat utilization device of a rotary kiln. As shown in fig. 1 to 2, a waste heat utilization device of a rotary kiln includes: the kiln comprises a kiln body 1, a kiln head 11, a plurality of first water inlet pipes 12, a water inlet disc 13, a plurality of water outlet pipes 14 and a water outlet disc 15, wherein,
the kiln comprises a kiln body 1 and a kiln cover, wherein a feed inlet 16 and a discharge outlet 17 are respectively arranged at two ends of the kiln body 1, and a plurality of through grooves 18 are annularly distributed on the wall of the kiln body 1;
the kiln head 11 is arranged at one end of a discharge hole 17 of the kiln body 1, and a smoke exhaust pipe 19 is arranged at the top of the kiln head 11;
the first water inlet pipes 12 are respectively communicated with one end of the through groove 18;
the water inlet disc 13 is of an annular structure, the first water inlet pipes 12 are annularly distributed on the water inlet disc 13, the water inlet disc 13 is rotatably connected with a rotating ring 21, and the rotating ring 21 is provided with a second water inlet pipe 2;
one end of each of the water outlet pipes 14 is communicated with the other end of the through groove 18, and the other ends are annularly distributed on the water outlet tray 15.
During operation, water enters the water inlet disc 13 from the second water inlet pipe 2, then enters the through groove 18 through the first water inlet pipes 12, exchanges heat with the kiln body 1, absorbs heat on the kiln body 1 to heat water, and heated hot water flows out through the water outlet pipe 14 and the water outlet disc 15 and is conveyed to other places needing hot water.
Therefore, the device can convey the water to other places needing hot water after heating the water through the waste heat on the kiln body 1, and the utilization rate of the waste heat on the rotary kiln is improved.
In some embodiments, one end of the smoke exhaust pipe 19 is provided with a drying part, and the drying part is used for drying the molded coal.
Optionally, the drying part comprises a drying box 31, a smoke exhaust 32 is arranged at the lower end of the drying box 31, a plurality of groups of supporting frames 33 are arranged in the drying box 31, the supporting frames 33 are used for placing molded coal, and a plurality of through holes 34 are formed in the supporting frames 33.
During operation, the moulded coal that will dry is placed on support frame 33, and the cigarette that has the heat enters into stoving case 31 from kiln head 11 through smoke exhaust pipe 19 in, carries out the stoving operation to the moulded coal in the stoving case 31, so make full use of the heat energy that contains in the cigarette, further reduced the loss of energy.
In some embodiments, a plurality of condensation pipes 41 are disposed in the drying box 31, one end of each condensation pipe 41 is used for being connected with an external water source, and the other end of each condensation pipe 41 is connected with a manifold 42, and the manifold 42 is communicated with the water inlet pipe.
Water leaves through condenser pipe 41, makes the steam in stoving case 31 can become the water droplet on condenser pipe 41 and flows down, can promote the stoving effect in stoving case 31, simultaneously, water can be by preliminary heating after condenser pipe 41, and water after preliminary heating can enter into logical groove 18 through second inlet tube 2 and further heat, can promote the heating effect to water, subsequent utilization of being convenient for.
In some embodiments, a dust removing part is connected in series to the smoke exhaust pipe 19, and the dust removing part is used for reducing dust in smoke.
Optionally, dust removal portion includes dust removal case 51, dust removal case 51 concatenates on the pipe 19 of discharging fume, dust removal case 51 with the pipe 19 of discharging fume rotates and connects, the dislocation is equipped with a plurality of hang plates 52 in the dust removal case 51, dust removal case 51's top is equipped with spray pipe 53, dust removal case 51 rotates and is connected with roof-rack 54, dust removal case 51 transmission is connected with the drive division, the drive division is used for driving dust removal case 51 rotates.
Optionally, the driving portion includes a motor 61, a driving gear 62 is disposed on a rotating shaft of the motor 61, the driving gear 62 is engaged with a driven gear 63, and the driven gear 63 is sleeved on the dust removing box 51.
Because the smoke contains more dust which is directly input into the drying part and can cause adverse effect on the molded coal, the dust removing part is designed, the smoke enters the dust removing box 51 from the bottom of the dust removing box 51, the water sprayed by the water spraying pipe 53 adsorbs the dust and falls on the inclined plate 52, meanwhile, the motor 61 drives the driving gear 62 to rotate, the driving gear 62 drives the driven gear 63 to rotate, the driven gear 63 drives the dust removing box 51 to rotate, and therefore, under the action of centrifugal force, the dust is not easy to be discharged out of the dust removing box 51 along with the smoke, and the purpose of dust removal is achieved.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (7)
1. A rotary kiln waste heat utilization device is characterized by comprising: the kiln comprises a kiln body, a kiln head, a plurality of first water inlet pipes, a water inlet disc, a plurality of water outlet pipes and a water outlet disc, wherein,
the kiln comprises a kiln body and a kiln cover, wherein a feed inlet and a discharge outlet are respectively formed in two ends of the kiln body, and a plurality of through grooves are annularly distributed on the wall of the kiln body;
the kiln head is arranged at one end of the kiln body discharge port, and a smoke exhaust pipe is arranged at the top of the kiln head;
the first water inlet pipes are respectively communicated with one end of the through groove;
the water inlet disc is of an annular structure, a plurality of first water inlet pipes are annularly distributed on the water inlet disc, the water inlet disc is rotatably connected with a rotating ring, and a second water inlet pipe is arranged on the rotating ring;
one end of each of the water outlet pipes is communicated with the other end of the through groove, and the other ends of the water outlet pipes are annularly distributed on the water outlet tray.
2. The waste heat utilization device of the rotary kiln as claimed in claim 1, wherein one end of the smoke exhaust pipe is provided with a drying part, and the drying part is used for drying molded coal.
3. The rotary kiln waste heat utilization device as claimed in claim 2, wherein the drying part comprises a drying box, a smoke outlet is arranged at the lower end of the drying box, a plurality of groups of support frames are arranged in the drying box, the support frames are used for placing molded coal, and a plurality of through holes are formed in the support frames.
4. The rotary kiln waste heat utilization device as claimed in claim 3, wherein a plurality of condensation pipes are arranged in the drying box, one ends of the condensation pipes are used for being communicated with an external water source, the other ends of the condensation pipes are connected with a main pipe, and the main pipe is communicated with the water inlet pipe.
5. The waste heat utilization device of the rotary kiln as claimed in claim 2, wherein a dust removal part is connected in series with the smoke exhaust pipe, and the dust removal part is used for reducing dust in smoke.
6. The rotary kiln waste heat utilization device according to claim 5, characterized in that the dust removal part comprises a dust removal box, the dust removal box is connected in series with the smoke exhaust pipe, a plurality of inclined plates are arranged in the dust removal box in a staggered manner, a water spray pipe is arranged at the top of the dust removal box, the dust removal box is rotatably connected with a top frame, the dust removal box is connected with a driving part in a transmission manner, and the driving part is used for driving the dust removal box to rotate.
7. The waste heat utilization device of the rotary kiln as claimed in claim 6, wherein the driving part comprises a motor, a driving gear is arranged on a rotating shaft of the motor, the driving gear is engaged with a driven gear, and the driven gear is sleeved on the dust removal box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468027.3A CN113237326A (en) | 2021-04-28 | 2021-04-28 | Rotary kiln waste heat utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468027.3A CN113237326A (en) | 2021-04-28 | 2021-04-28 | Rotary kiln waste heat utilization device |
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| CN113237326A true CN113237326A (en) | 2021-08-10 |
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| CN202110468027.3A Pending CN113237326A (en) | 2021-04-28 | 2021-04-28 | Rotary kiln waste heat utilization device |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004087601A1 (en) * | 2003-02-24 | 2004-10-14 | Posco | METHOD AND BURNER APPARATUS FOR INJECTING A PULVERIZED COAL INTO ROTARY KILNS, METHOD AND APPARATUS FOR PRODUCING CaO USING THEM |
| CN2811901Y (en) * | 2005-08-11 | 2006-08-30 | 北京东方能汇能源工程技术有限公司 | Cement rotary kiln body with surface heat energy recovery device |
| US20140366499A1 (en) * | 2012-01-23 | 2014-12-18 | Mitsubishi Materials Corporation | Chlorine bypass device |
| CN104923042A (en) * | 2015-06-01 | 2015-09-23 | 石家庄新华能源环保科技股份有限公司 | Dividing wall rotary kiln device for flue gas dehydration |
| CN106440841A (en) * | 2016-12-06 | 2017-02-22 | 丹东同合高新科技有限公司 | Exhaust gas recovery system for rotary kiln |
| CN206094883U (en) * | 2016-08-29 | 2017-04-12 | 洛阳堆金环保设备有限公司 | Rotary kiln for roasted molybdenum oxide with useless thermal utilization system |
| CN107185334A (en) * | 2017-07-27 | 2017-09-22 | 江苏丰鑫源环保集团有限公司 | A kind of ash handling equipment of coal-burning boiler |
| CN109099718A (en) * | 2018-10-24 | 2018-12-28 | 株洲火炬工业炉有限责任公司 | A kind of rotary kiln residual neat recovering system |
| CN111735314A (en) * | 2020-07-03 | 2020-10-02 | 周占铭 | Rotary kiln waste heat utilization device |
| CN112361800A (en) * | 2020-10-12 | 2021-02-12 | 新疆宝新昌佳石灰制品有限公司 | Method for drying pulverized coal by using waste heat of rotary kiln |
| CN213041045U (en) * | 2020-09-25 | 2021-04-23 | 河南红润科技铝材有限公司 | Waste heat utilization type microcrystal spherulite raw material drying device |
-
2021
- 2021-04-28 CN CN202110468027.3A patent/CN113237326A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004087601A1 (en) * | 2003-02-24 | 2004-10-14 | Posco | METHOD AND BURNER APPARATUS FOR INJECTING A PULVERIZED COAL INTO ROTARY KILNS, METHOD AND APPARATUS FOR PRODUCING CaO USING THEM |
| CN2811901Y (en) * | 2005-08-11 | 2006-08-30 | 北京东方能汇能源工程技术有限公司 | Cement rotary kiln body with surface heat energy recovery device |
| US20140366499A1 (en) * | 2012-01-23 | 2014-12-18 | Mitsubishi Materials Corporation | Chlorine bypass device |
| CN104923042A (en) * | 2015-06-01 | 2015-09-23 | 石家庄新华能源环保科技股份有限公司 | Dividing wall rotary kiln device for flue gas dehydration |
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| CN106440841A (en) * | 2016-12-06 | 2017-02-22 | 丹东同合高新科技有限公司 | Exhaust gas recovery system for rotary kiln |
| CN107185334A (en) * | 2017-07-27 | 2017-09-22 | 江苏丰鑫源环保集团有限公司 | A kind of ash handling equipment of coal-burning boiler |
| CN109099718A (en) * | 2018-10-24 | 2018-12-28 | 株洲火炬工业炉有限责任公司 | A kind of rotary kiln residual neat recovering system |
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| CN213041045U (en) * | 2020-09-25 | 2021-04-23 | 河南红润科技铝材有限公司 | Waste heat utilization type microcrystal spherulite raw material drying device |
| CN112361800A (en) * | 2020-10-12 | 2021-02-12 | 新疆宝新昌佳石灰制品有限公司 | Method for drying pulverized coal by using waste heat of rotary kiln |
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