CN1182200A - Burning system for rotary cement kiln - Google Patents
Burning system for rotary cement kiln Download PDFInfo
- Publication number
- CN1182200A CN1182200A CN96120636A CN96120636A CN1182200A CN 1182200 A CN1182200 A CN 1182200A CN 96120636 A CN96120636 A CN 96120636A CN 96120636 A CN96120636 A CN 96120636A CN 1182200 A CN1182200 A CN 1182200A
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- China
- Prior art keywords
- air
- cement
- fuel
- rotary kiln
- burner
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/125—Fuels from renewable energy sources, e.g. waste or biomass
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The said burning system consists of burner, kiln head, blower with inlet pipe and outlet pipe, cement clinker cooling machine and other parts. In the said system, air is heated by cement clinker to become hot air, which, together with fuel, is sprayed by burner to form flame. The present invention makes it possible to use low-grade fuel, such as anthracite, brown coal and coal gangue, in rotary cement kiln, and this expands its fuel source. The present invention also facilitates ignition, raise flame temperature and stability, so that it is suitable for various kinds of rotary cement kilns.
Description
The present invention relates to a kind of combustion system that is used for cement rotary kiln.
The combustion system of existing cement rotary kiln, no matter adopt the burner of what pattern, the air that ejects through burner all is directly to take from the normal temperature atmosphere.The shortcoming of such combustion system is, simultaneously eject with fuel through burner, the air of supplying with fuel combustion is directly from the normal temperature atmosphere, temperature was lower when these air entered rotary kiln, generally be lower than 100 ℃, be difficult for catching fire after causing fuel to enter rotary kiln, the flame temperature that forms after catching fire is lower, flame holding is poor, and the adjustability of flame profile is bad.Particularly (inferior fuel means that the fuel low heat valve is lower when the burning inferior fuel, or be difficult for lighting, flame is difficult for stable fuel during burning, as anthracite, brown coal, gangue etc.), even can put out a fire, flame instability, flame temperature are lower than the problems such as temperature of calcined by rotary kiln working condition requirement.Existing cement rotary kiln combustion system can not use inferior fuel effectively.
The objective of the invention is to develop a kind of new combustion systems,, enlarge the fuel source of cement rotary kiln, the stability of flame when improving fuel combustion to solve the problem that cement rotary kiln can not effectively use inferior fuel.
Accompanying drawing is an operation principle schematic diagram of the present invention.
As shown in drawings, the present invention is by cement rotary kiln 1, flame 2, and burner 3, Cement Clinker 4, Cement rotary kiln kiln hood 5, hot-air 6, fan outlet airduct 7, blower fan 8, blower fan import airduct 9, fuel Carrier pipe 10, fuel 11, cement clinker cooler 12, normal temperature clinker 13, normal temperature air 14 Deng composition.
The present invention is when work, and air and clinker flow in the pipeline of cement clinker cooler 12 and cement rotary kiln 1 composition, and the flow direction of air is opposite with the direction of motion of clinker, shown in arrow among the figure.By convection current, radiation, with thermaltransmission modes such as heat conduction, heat passes to the lower air of temperature from the higher clinker of temperature, detailed process is, when normal temperature air 14 process cement clinker coolers 12 and cement rotary kiln kiln hood 5, by 4 heating of high-temperature cement grog, become hot-air 6, high-temperature cement grog 4 is cooled to normal temperature clinker 13 by air simultaneously, the result is that air is heated by clinker, temperature constantly raises, become hot-air 6 by normal temperature air 14, clinker is cooled off by air, and temperature constantly reduces, become normal temperature clinker 13 by high-temperature cement grog 4, for different cement rotary kiln production lines, air is heated degree and inequality when going out cement kiln kiln hood 5, and the temperature range of hot-air is between 200 ℃～800 ℃.Under the effect of blower fan, hot-air 6 is drawn out of from cement clinker cooler 12 or cement rotary kiln kiln hood 5, the position of extracting hot blast is according to the temperature of the required hot blast of reality selected (position of extracting hot blast 6 among the figure is an illustrated position), higher from the hot blast temperature that kiln hood extracts, the hot blast temperature of arranging the end extraction of unloading clinker from cooler is lower.Hot blast arrives burner 3 through blower fan import airduct 9 and outlet airduct 7, and simultaneously, fuel 11 also is admitted to burner 3 through fuel-supply pipe 10.Hot-air 6 sprays into cement rotary kiln 1 with fuel 11 simultaneously through burner 3.In cement rotary kiln 1, fuel 11 burnings form flame 2, calcination of cement clinker.
Key problem in technology of the present invention is: the air that process burner and fuel spray simultaneously is the hot-air that heated through clinker, rather than directly take from the normal temperature air of atmosphere, hot-air has guaranteed that inferior fuel can in time reach ignition temperature, light and smooth combustion, improved the temperature of flame.
The present invention can solve the problem that present cement rotary kiln can not use inferior fuel, makes inferior fuel (as anthracite, brown coal, gangue etc.) become the available fuel of cement rotary kiln, enlarges the fuel source of cement rotary kiln; Can make fuel ignition easy, improve the temperature and the stability of flame.The present invention is widely used in various types of cement rotary kilns.
Claims (1)
- A kind of combustion system with cement rotary kiln, it is characterized in that: described combustion system is by cement rotary kiln, flame, burner, the high-temperature cement grog, the cement rotary kiln kiln hood, hot-air, blower fan outlet airduct, blower fan, blower fan import airduct, fuel-supply pipe, fuel, cement clinker cooler, the normal temperature clinker, compositions such as normal temperature air, wherein, when normal temperature air process cement clinker cooler and cement rotary kiln kiln hood, become hot-air after the heating of high-temperature cement grog, burner is extracted and sent into to the Hot air quilt blower fan out, simultaneously, fuel also is admitted to burner, hot-air and fuel spray into the cement rotary kiln burning simultaneously through burner, form flame, the air that sprays into cement rotary kiln simultaneously through burner and fuel in the described combustion system is not directly from the normal temperature air of atmosphere, but the hot-air of normal temperature air after through the heating of high-temperature cement grog.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120636A CN1182200A (en) | 1996-11-13 | 1996-11-13 | Burning system for rotary cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120636A CN1182200A (en) | 1996-11-13 | 1996-11-13 | Burning system for rotary cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1182200A true CN1182200A (en) | 1998-05-20 |
Family
ID=5126473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96120636A Pending CN1182200A (en) | 1996-11-13 | 1996-11-13 | Burning system for rotary cement kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1182200A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110958A (en) * | 2013-04-19 | 2014-10-22 | 天瑞集团水泥有限公司 | Method and device for supplying primary air for kiln head of cement kiln |
| CN104704309A (en) * | 2012-10-08 | 2015-06-10 | 乔治洛德方法研究和开发液化空气有限公司 | Process and apparatus for improving the combustion of secondary fuel in a rotary kiln and process for retrofitting a rotary kiln with a burner assembly |
-
1996
- 1996-11-13 CN CN96120636A patent/CN1182200A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104704309A (en) * | 2012-10-08 | 2015-06-10 | 乔治洛德方法研究和开发液化空气有限公司 | Process and apparatus for improving the combustion of secondary fuel in a rotary kiln and process for retrofitting a rotary kiln with a burner assembly |
| CN104704309B (en) * | 2012-10-08 | 2017-07-14 | 乔治洛德方法研究和开发液化空气有限公司 | Method for the method and apparatus of the burning that improves in rotary kiln secondary fuel and for reequiping rotary kiln using burner assembly |
| CN104110958A (en) * | 2013-04-19 | 2014-10-22 | 天瑞集团水泥有限公司 | Method and device for supplying primary air for kiln head of cement kiln |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |