CN1221764C - Melting furnace having chalkstone out-furnace decomposition device - Google Patents
Melting furnace having chalkstone out-furnace decomposition device Download PDFInfo
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- CN1221764C CN1221764C CN 02156620 CN02156620A CN1221764C CN 1221764 C CN1221764 C CN 1221764C CN 02156620 CN02156620 CN 02156620 CN 02156620 A CN02156620 A CN 02156620A CN 1221764 C CN1221764 C CN 1221764C
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- vertical
- melting furnace
- lime stone
- lift pipe
- combustion chamber
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Abstract
The present invention relates to a slag-tapping melting furnace, particularly to a melting furnace provided with a limestone decomposing device outside the furnace. The present invention is realized in this way: the limestone decomposing device outside the furnace is arranged at the outlet of a combustion chamber of the melting furnace, and the prevent invention is composed of a vertical elevating pipe and a cyclone separator; the lower part of the vertical elevating pipe is connected with the outlet of the combustion chamber of the melting furnace, and limestone particles of which the diameter is less than 1.5mm are conveyed into the vertical elevating pipe which is connected with the outlet of the melting cyclone furnace in seeding manner via wind force and then enter into high-temperature smoke gas to be quickly heated and decomposed; if the diameter of the largest limestone particle is 1 to 1.5mm, the speed of the hot smoke inside the vertical elevating pipe is not lower than 10 meters per second; if the diameter of the largest limestone particle is 0.6 to 1mm, the speed of the hot smoke is not lower than 7 meters per second, and the dwell time of the particles inside the separator of the elevating pipe is long enough so as to guarantee the accomplishment of the decomposition process. The vertical height of the vertical elevating pipe is 6 to 12 meters, and the smoke gas and the limestone particles enter the cyclone separator so that the separation of the particles and the gas is accomplished inside the cyclone separator.
Description
Technical field
The present invention relates to a kind of slag tap ash melting furnace.
Background technology
Most of boiler fly ash all can not obtain the application of high value, often needs to throw aside, and not only occupies the farmland but also cause water body and dust pollution, is a great problem of big-and-middle-sized thermal power plant.The slag tap cyclone furnace is a kind of combustion technology of maturation, and the liquid slag of fusing is discharged with the vitreum particle after water-cooled, and is no longer water-soluble, also can secondary fly-up.Calcium enriched cyclone-furnace slag has good basic active, is good building materials raw material.At present lime stone all is to divide heat of desorption in the combustion chamber, not only consume fuel but also reduced the molten grey ability of unit volume of combustion chamber.
Summary of the invention
The object of the present invention is to provide a kind of unit volume that can improve the combustion chamber to melt grey ability, the consumption of lowering fuel and the slag tap ash melting furnace of investment.
For achieving the above object, a kind of slag tap ash melting furnace of the present invention comprises the combustion chamber, decomposer outside the outlet outer setting lime stone stove of described combustion chamber; The outer decomposer of described lime stone stove comprises vertical-lift pipe and cyclone separator; The top of described vertical-lift pipe is connected with described cyclone separator, and the bottom of described vertical-lift pipe closely is connected with the outlet of described combustion chamber, and described vertical-lift pipe bottom is provided with the inlet that enters for limestone particle; Described cyclone separator is connected with described combustion chamber by boost in pressure mechanism, and described boost in pressure mechanism is that J type valve or high temperature flapper or combustion air guide and penetrate.
Further, the form sent out with wind-force less than the described limestone particle of 1.5mm of the largest particles diameter is sent into the inlet of described vertical-lift pipe.
Further, when described lime stone maximum particle diameter was 1-1.5mm, hot cigarette speed was not less than 10m/s in the described vertical-lift pipe; When described lime stone maximum particle diameter was 0.6-1mm, hot cigarette speed was not less than 7m/s in the described vertical-lift pipe.
Further, the described limestone particle that is separated by described cyclone separator enters in the described combustion chamber through described boost in pressure mechanism.
Further, the vertical height of described vertical-lift pipe is 6-12m.
Slag tap ash melting furnace provided by the invention, its advantage is: utilized the solid thermal carriers technology to add hot-air with flue gas heat, obtained the high-temperature preheated air, more greyly melted with lower fuel consumption and less combustion chamber volume.Lime stone is decomposed outside stove in advance, significantly improve the molten grey ability of unit volume of molten ash and combustion chamber, thus the consumption and the investment of further lowering fuel.
Description of drawings
Fig. 1 is the structural representation of the ash melting furnace of the outer decomposer of band lime stone stove of the present invention.
The specific embodiment
The present invention is achieved in that as figure, decomposer outside the outlet 2 outer setting lime stone stoves of ash melting furnace combustion chamber 1, and this device mainly is made up of vertical-lift pipe 3 and cyclone separator 4.Vertical-lift pipe 3 bottoms closely are connected with the outlet 2 of ash melting furnace combustion chamber 1, with lime stone 5 particles of particle diameter less than 1.5mm, send into the vertical-lift pipe 3 that links to each other with the outlet 2 of ash melting furnace with the form that wind-force is sowed, after lime stone 5 particles enter, because of mix decomposes rapidly with high-temperature flue gas; Lime stone 5 particles had not only absorbed physics heat but also had absorbed branch analgesic, and high-temperature flue gas will be cooled off rapidly.The gas speed of vertical-lift pipe 3 is assurances that particle promotes, if lime stone 5 the largest particles diameters are 1-1.5mm, then the hot cigarette speed of vertical-lift pipe 3 is not less than 10m/s; If the maximum particle diameter of lime stone 5 is 0.6-1mm, then hot cigarette speed should be not less than 7m/s.The time of staying of lime stone 5 particles in riser 3 and separator 4 should guarantee finishing of decomposable process.The vertical height of vertical-lift pipe 3 is a 6-12 rice, and flue gas and lime stone 5 particles enter cyclone separator 4, finish separating of particle and gas in cyclone separator 4.Lime stone 5 particles are penetrated equal pressure hoisting mechanism 7 by J type valve or high temperature flapper or combustion air guiding and are entered in the combustion chamber 1, when lime stone 5 amounts that add in every standard cubic meter flue gas are no more than 250g, the flue-gas temperature of leaving cyclone separator 4 can not be lower than 850 ℃, has guaranteed the good decomposition of lime stone 5.
Claims (5)
1, a kind of slag tap ash melting furnace comprises combustion chamber (1), it is characterized in that being: decomposer outside outlet (2) the outer setting lime stone stove of described combustion chamber (1); The outer decomposer of described lime stone stove comprises vertical-lift pipe (3) and cyclone separator (4); The top of described vertical-lift pipe (3) is connected with described cyclone separator (4), the bottom of described vertical-lift pipe (3) closely is connected with the outlet (2) of described combustion chamber (1), and described vertical-lift pipe (3) bottom is provided with the inlet that enters for lime stone (5) particle; Described cyclone separator (4) is connected with described combustion chamber (1) by boost in pressure mechanism, and described boost in pressure mechanism is that J type valve or high temperature flapper or combustion air guide and penetrate.
2, according to the described slag tap ash melting furnace of claim 1, it is characterized in that being: the form that the largest particles diameter is sent out with wind-force less than described lime stone (5) particle of 1.5mm is sent into the inlet of described vertical-lift pipe (3).
3, according to the described slag tap ash melting furnace of claim 2, it is characterized in that being: when described lime stone (5) maximum particle diameter was 1-1.5mm, hot cigarette speed was not less than 10m/s in the described vertical-lift pipe (3); When described lime stone (5) maximum particle diameter was 0.6-1mm, hot cigarette speed was not less than 7m/s in the described vertical-lift pipe (3).
4, according to the described slag tap ash melting furnace of claim 2, it is characterized in that being: described lime stone (5) particle that is separated by described cyclone separator (4) enters in the described combustion chamber (1) through described boost in pressure mechanism.
5, according to the described slag tap ash melting furnace of claim 1, it is characterized in that being: the vertical height of described vertical-lift pipe (3) is 6-12m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156620 CN1221764C (en) | 2002-12-17 | 2002-12-17 | Melting furnace having chalkstone out-furnace decomposition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02156620 CN1221764C (en) | 2002-12-17 | 2002-12-17 | Melting furnace having chalkstone out-furnace decomposition device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1514163A CN1514163A (en) | 2004-07-21 |
| CN1221764C true CN1221764C (en) | 2005-10-05 |
Family
ID=34236316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02156620 Expired - Fee Related CN1221764C (en) | 2002-12-17 | 2002-12-17 | Melting furnace having chalkstone out-furnace decomposition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1221764C (en) |
-
2002
- 2002-12-17 CN CN 02156620 patent/CN1221764C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1514163A (en) | 2004-07-21 |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |