CN103438721A - Technology for recycling waste heat of kiln head of rotary cement kiln - Google Patents
Technology for recycling waste heat of kiln head of rotary cement kiln Download PDFInfo
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- CN103438721A CN103438721A CN2013101890491A CN201310189049A CN103438721A CN 103438721 A CN103438721 A CN 103438721A CN 2013101890491 A CN2013101890491 A CN 2013101890491A CN 201310189049 A CN201310189049 A CN 201310189049A CN 103438721 A CN103438721 A CN 103438721A
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- chimney
- exhaust duct
- waste heat
- air inlet
- waste
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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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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a waste-heat utilization technology in cement industry, in particular to a technology for recycling waste heat of a kiln head of a rotary cement kiln. A device related to the technology comprises an exhaust duct, a chimney and cooling fans. The cooling fans are provided with an air inlet; the end of the exhaust duct is communicated with the chimney; the exhaust duct near the chimney is connected in parallel with a waste air recirculating pipeline; the waste air recirculating pipeline extend to the cooling fans and is communicated with the air inlet. Thus, wasted heat at ordinary times is recycled, so that the temperature of waste gas of a high-temperature section and a low-temperature section in an AQC waste heat boiler can rise, the generating capacity is increased, and not only is energy saved but also benefits are brought to enterprises.
Description
technical field
The present invention relates to cement industry UTILIZATION OF VESIDUAL HEAT IN technology, relate in particular to a kind of cement rotary kiln kiln hood waste heat reutilization technology.
Background technology
Grate-cooler extracts natural wind in grate-cooler through a plurality of cooling blowers, and the waste gas hot blast obtained through the inner heat exchange of grate-cooler is through high temperature section and middle-temperature section in the corresponding AQC of the entering into waste heat boiler of expansion chamber.The waste gas hot blast is after the inner heat exchange of AQC waste heat boiler, and in the AQC bottom combustion gas lingering remnants of past customs, the waste gas lingering remnants of past customs is transported to chimney and finally is discharged in atmosphere through exhaust duct.The temperature of the waste gas lingering remnants of past customs that discharge AQC waste heat boiler bottom is up to 90 ℃, and the waste gas lingering remnants of past customs has been carried a large amount of heats and discharged from chimney, has caused a large amount of wastes of energy.
summary of the invention
The objective of the invention is, in order to solve the problem of a large amount of waste heat wastes of cement rotary kiln, provides a kind of cement rotary kiln kiln hood waste heat reutilization technology, makes the waste heat of waste obtain again utilizing, and has increased the cogeneration amount, to enterprise, has brought benefit.
The technical solution adopted in the present invention is as follows:
Lingering remnants of past customs recirculating system refers to carries out parallel connection by many cooling blowers of an exhaust duct of exhaust blower chimney and supply grate-cooler cooling air, concrete scheme is: a kind of cement rotary kiln kiln hood waste heat reutilization technology, related device comprises exhaust duct, chimney, cooling blower, air inlet is arranged on cooling blower, the exhaust duct terminal is communicated with chimney, going out lingering remnants of past customs recirculation conduit near parallel connection on the exhaust duct of chimney, lingering remnants of past customs recirculation conduit extends to the cooling blower place and is communicated with air inlet.
Described lingering remnants of past customs recirculation conduit is one, at its end parallel branch, goes out a plurality of air feed arms, and each air feed arm is connected with the air inlet of each cooling blower respectively, and the air inlet of each cooling blower also is provided with the natural wind entrance.
Before and after transformation, a line reduced parameter is as follows:
2, before and after the transformation, the two wires reduced parameter is as follows:
From above contrast, find out: due to what extract, be the hot blast that temperature is higher, in the situation that it is a lot of to guarantee that higher secondary air temperature kiln hood grate-cooler increases with air quantity, particularly kiln head exhaust fan draws wind to strengthen (by 60Hz, mentioning 85Hz), and the waste heat flow increases, and generated energy increases.The heat of waste has obtained utilization again at ordinary times, can make the EGT of the interior high temperature section of AQC waste heat boiler and low-temperature zone raise, and has increased generated energy, has not only saved the energy and has brought benefit to enterprise again.
The accompanying drawing explanation
Accompanying drawing 1 is apparatus structure schematic diagram used in the present invention.
In figure, 1. chimney, 2. exhaust duct, a 3. exhaust blower, 4. lingering remnants of past customs recirculation conduit, 5. air feed arm, 6. cooling blower, 7. natural wind entrance, 8. grate-cooler, 9. expansion chamber, 11.AQC waste heat boiler.
The specific embodiment
A kind of cement rotary kiln kiln hood waste heat reutilization technology, related device comprises exhaust duct 2, chimney 1, cooling blower 6, on cooling blower 6, air inlet is arranged, exhaust duct 2 terminals are communicated with chimney 1, going out a lingering remnants of past customs recirculation conduit 4 near parallel connection on the exhaust duct of chimney, lingering remnants of past customs recirculation conduit 4 extends to the cooling blower place, go out a plurality of air feed arms 5 at its end parallel branch, each air feed arm 5 is connected with the air inlet of each cooling blower 6 respectively, and the air inlet of each cooling blower also is provided with natural wind entrance 7.
Claims (2)
1. a cement rotary kiln kiln hood waste heat reutilization technology, related device comprises exhaust duct, chimney, cooling blower, air inlet is arranged on cooling blower, the exhaust duct terminal is communicated with chimney, it is characterized in that: going out lingering remnants of past customs recirculation conduit near parallel connection on the exhaust duct of chimney, lingering remnants of past customs recirculation conduit extends to the cooling blower place and is communicated with air inlet.
2. a kind of cement rotary kiln kiln hood waste heat reutilization technology as claimed in claim 1, it is characterized in that described lingering remnants of past customs recirculation conduit is one, go out a plurality of air feed arms at its end parallel branch, each air feed arm is connected with the air inlet of each cooling blower respectively, and the air inlet of each cooling blower also is provided with the natural wind entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101890491A CN103438721A (en) | 2013-05-21 | 2013-05-21 | Technology for recycling waste heat of kiln head of rotary cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101890491A CN103438721A (en) | 2013-05-21 | 2013-05-21 | Technology for recycling waste heat of kiln head of rotary cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103438721A true CN103438721A (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101890491A Pending CN103438721A (en) | 2013-05-21 | 2013-05-21 | Technology for recycling waste heat of kiln head of rotary cement kiln |
Country Status (1)
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| CN (1) | CN103438721A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197047A (en) * | 2016-08-27 | 2016-12-07 | 洛阳麦德陶粒有限公司 | A kind of ceramisite sintered cooled exhaust gas utilizes device |
| CN111380365A (en) * | 2019-01-01 | 2020-07-07 | 将乐金牛水泥有限公司 | Heat energy recycling device of grate cooler |
| CN111792859A (en) * | 2020-07-24 | 2020-10-20 | 天津水泥工业设计研究院有限公司 | Cement production system capable of reducing heat loss of surface of kiln cylinder and heat enthalpy loss of residual wind without kiln head |
| CN114152101A (en) * | 2021-12-09 | 2022-03-08 | 青阳县迎春炉料有限公司 | Energy-saving and consumption-reducing device for furnace and kiln and energy-saving and consumption-reducing method thereof |
-
2013
- 2013-05-21 CN CN2013101890491A patent/CN103438721A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197047A (en) * | 2016-08-27 | 2016-12-07 | 洛阳麦德陶粒有限公司 | A kind of ceramisite sintered cooled exhaust gas utilizes device |
| CN111380365A (en) * | 2019-01-01 | 2020-07-07 | 将乐金牛水泥有限公司 | Heat energy recycling device of grate cooler |
| CN111792859A (en) * | 2020-07-24 | 2020-10-20 | 天津水泥工业设计研究院有限公司 | Cement production system capable of reducing heat loss of surface of kiln cylinder and heat enthalpy loss of residual wind without kiln head |
| CN111792859B (en) * | 2020-07-24 | 2022-04-29 | 天津水泥工业设计研究院有限公司 | Cement production system capable of reducing heat loss of surface of kiln cylinder and heat enthalpy loss of residual wind without kiln head |
| CN114152101A (en) * | 2021-12-09 | 2022-03-08 | 青阳县迎春炉料有限公司 | Energy-saving and consumption-reducing device for furnace and kiln and energy-saving and consumption-reducing method thereof |
| CN114152101B (en) * | 2021-12-09 | 2023-11-17 | 青阳县迎春炉料有限公司 | Energy-saving and consumption-reducing device for kiln and energy-saving and consumption-reducing method thereof |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131211 |