CN2098659U - Gas-material heat exchanger used in dry rotary kiln - Google Patents
Gas-material heat exchanger used in dry rotary kiln Download PDFInfo
- Publication number
- CN2098659U CN2098659U CN 91216667 CN91216667U CN2098659U CN 2098659 U CN2098659 U CN 2098659U CN 91216667 CN91216667 CN 91216667 CN 91216667 U CN91216667 U CN 91216667U CN 2098659 U CN2098659 U CN 2098659U
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- China
- Prior art keywords
- gas
- kiln
- rotary kiln
- heat exchanger
- material heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model relates to a gas-material heat exchanger used in dry rotary kiln which is suitable for a cement dry rotary kiln whose tail part has a suspended pre-heater. A gas-material heat exchanger which is installed on the decomposition zone of the carbonate of the cement dry rotary kiln comprises a kiln body, lining bricks and material carrier composed of a multi-head spiral body. The utility model can add the heat exchange areas between the gas and the material walls, and the materials can be heated uniformly.
Description
The utility model relates to the gas material heat-exchange device in a kind of dry-process rotory kiln, is particularly useful for the cement dry method rotary kiln of suspension preheater suspended preheater.
Rotary kiln is the heat treated a kind of common equipments of mineral, such as the burning till of clinker, the sintering of senior aluminium vanadine grog, and the dead roasting of senior magnesia, and steel-making is all carried out in dry-process rotory kiln with the preparation of active lime is general.But the contact area in dry-process rotory kiln between high-temperature gas and the material to be processed is very limited, heat transfer between the gas-solid, mass transfer rate are very slow, the temperature difference between the gas-solid two-phase is very big, usually greater than 400 ℃, the maximum temperature difference is 700 ℃, the kiln discharge gas temperature is too high, and the thermal efficiency of kiln is on the low side, the energy consumption height of system, yields poorly.The existing practice is to set up very high suspended preheater at the kiln tail, but to how improving the efficient of rotary kiln itself, lacks deep research.
The purpose of this utility model is to manage to improve the thermal efficiency and the reaction efficiency of rotary kiln self, makes it to form more rational coupling with the suspended preheater of kiln tail and the cooler of kiln hood, thereby the hear rate of system is reduced, and output improves.
The purpose of this utility model is achieved in that the carbonate decomposition band in rotary kiln sets up the gas material heat-exchange device that the band glassware of a multi-head spiral shape of making by kiln shell, lining brick with the material that high-temperature-resistant and anti-corrosion peels off is formed.Make the contact area of gas material increase by 1.6 times, heat exchange area increases by 1.4 times between the material wall, thereby makes the heating rate of material improve 1.4 times at least.Under identical flame temperature, set up the gas material heat-exchanger rig in this kiln, the maximum temperature of material is raise 100 ℃ than dry method hollow kiln, and the temperature of kiln discharge gas also will reduce more than 100 ℃, so just makes the efficient of kiln improve than hollow kiln, output increases.
Below in conjunction with accompanying drawing gas material heat-exchange device of the present utility model is described:
Fig. 1 is that the utility model is installed in the diagram in the rotary kiln.
Fig. 2 is the schematic diagram that is the concrete installation of band glassware in rotary kiln of multi-head spiral shape of the present utility model.
Fig. 3 is the high temperature resistant anti-strip block structure that is used for making helical form band glassware.
Gas material heat-exchange device 1 of the present utility model can be assemblied in the carbonate decomposition band of the dry method cement rotary kiln 3 of band suspended preheater (or preheater decomposer) 2, and its installation length is different because of the structure and the handled material characteristic of concrete kiln, is 5-20 rice.
Gas material heat-exchange device 1 of the present utility model is by kiln shell 4, and the band glassware 6 that lining brick 5 on the kiln shell and block are contained on the lining brick 5 constitutes.Block structure block the multi-head spiral body 7 in carbonate decomposition band of band glassware 6 for peeling off with high-temperature-resistant and anti-corrosion.A number of multi-head spiral body 7 is minimum to be more than 8.
It is trapezoidal 8 that the cross section of block structure of the multi-head spiral body 7 of band glassware can be selected, and the first half of itself and the contacted trapezoidal side of material (promptly promoting material side) is an arc 9.
The utility model has the advantage of: the gas material heat-exchange device that is the multi-head spiral shape both can increase the heat exchange area between the gas material, can increase again the heat exchange area between the material wall; And when it rotates together with the kiln body, can stir and promote material and travel forward, make material energy thermally equivalent.
Claims (3)
1, the gas material heat-exchange device in the dry-process rotory kiln formed of a kind of kiln shell (4), lining brick (5) by rotary kiln, it is characterized in that this device also comprises band glassware (6), the multi-head spiral body (7) that is built on the lining brick (5) of this band glassware (6) by the carbonate decomposition band in rotary kiln is formed.
2, device as claimed in claim 1, a number that it is characterized in that said multi-head spiral body (7) are more than 8, and the length of band glassware (6) is 5-20 rice.
3, according to claim 1,2 described devices, it is characterized in that said conveyor screw (7) is to be built into the block structure that high-temperature-resistant and anti-corrosion peels off, the cross section of this block structure is trapezoidal (8), and the first half of itself and the contacted trapezoidal side of material is arc (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91216667 CN2098659U (en) | 1991-06-25 | 1991-06-25 | Gas-material heat exchanger used in dry rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91216667 CN2098659U (en) | 1991-06-25 | 1991-06-25 | Gas-material heat exchanger used in dry rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2098659U true CN2098659U (en) | 1992-03-11 |
Family
ID=4924521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91216667 Expired - Lifetime CN2098659U (en) | 1991-06-25 | 1991-06-25 | Gas-material heat exchanger used in dry rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2098659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058536A (en) * | 2012-11-26 | 2013-04-24 | 石家庄新华能源环保科技股份有限公司 | Heat-accumulation dividing-wall heating rotary kiln device |
-
1991
- 1991-06-25 CN CN 91216667 patent/CN2098659U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058536A (en) * | 2012-11-26 | 2013-04-24 | 石家庄新华能源环保科技股份有限公司 | Heat-accumulation dividing-wall heating rotary kiln device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |