CN204711189U - A kind of dewaxing device of fuel heating - Google Patents
A kind of dewaxing device of fuel heating Download PDFInfo
- Publication number
- CN204711189U CN204711189U CN201520265353.4U CN201520265353U CN204711189U CN 204711189 U CN204711189 U CN 204711189U CN 201520265353 U CN201520265353 U CN 201520265353U CN 204711189 U CN204711189 U CN 204711189U
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- CN
- China
- Prior art keywords
- burner hearth
- dewaxing
- mullite
- top board
- fuel heating
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- 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.)
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Abstract
The utility model provides the dewaxing device of a kind of fuel heating, feature is that it adopts without the full brick structure of flue, bottom it and side is mullite brick, its hollow is burner hearth, and workpiece is placed on guipure, advances in the middle of burner hearth, described burner hearth bottom arranged on left and right sides is respectively provided with a nozzle, described guipure is placed on a carborundum base plate, is provided with mullite top board above described burner hearth, is provided with heat-insulation layer outside described mullite top board.This technical scheme improves dewaxing effect, especially to nickelic product, and shortens the dewaxing time, improves sintering furnace production capacity, reduces production cost and decreases environmental pollution.
Description
Technical field
The utility model relates to process for dewaxing and the device of the heating of a kind of fuel.
Background technology
Dewaxing in powder metallurgical technique refers to be fallen the lubricant burn off in powder compact, if do not have complete burn off to fall, product introduction high temperature sintering district, then may bring split as area carbon, product are crack, the mass defect such as hot strength is low.The mode of electrical heating that what the powder metallurgy firing equipment that China has now adopted mostly is dewaxing, this kind of mode mode efficiency comparison that dewaxes is low.The trend of current domestic powder-product is more and more high-end change, and complicated nickelic product gets more and more, and dewaxing difficulty is increasing, and manufacturing enterprise has found a problem in sintering furnace practical process, dewaxes exactly not thorough.This supervises the dewaxing systems of our development of new more.
Utility model content
In view of this, the dewaxing device that the utility model provides a kind of fuel to heat, is intended to promote dewaxing effect, especially to nickelic product, and shortens the dewaxing time, improve sintering furnace production capacity, reduces production cost and reduces environmental pollution.
Technical solution of the present utility model is: a kind of dewaxing device of fuel heating, be characterised in that, it adopts without the full brick structure of flue, and bottom it and side is mullite brick, and its hollow is burner hearth, workpiece is placed on guipure, advance in the middle of burner hearth, described burner hearth bottom arranged on left and right sides is respectively provided with a nozzle, and described guipure is placed on a carborundum base plate, be provided with mullite top board above described burner hearth, outside described mullite top board, be provided with heat-insulation layer.
Preferably, the dewaxing device of above-mentioned a kind of fuel heating, wherein said heat-insulation layer is heat-preservation cotton.
Preferably, the dewaxing device of above-mentioned a kind of fuel heating, the symmetrical setting of wherein said nozzle.
Preferably, the dewaxing device of above-mentioned a kind of fuel heating, wherein said burner hearth is left and right symmetrical structure, and burner hearth both sides and described nozzle corresponding position are the tilted shape of left and right symmetry, for gas flow guiding, described mullite top board is a symmetrical gusseted shape.
Preferably, the dewaxing device of above-mentioned a kind of fuel heating, wherein said mullite top board corner angle is 140
0.
Technique effect of the present utility model is mainly reflected in: pass into the oxidizing atmosphere directly contact lubricated dose in burner hearth in the utility model through nozzle, dewaxing effect significantly promotes, especially to nickelic product, shorten the dewaxing time simultaneously, the bearing capacity that meshbeltfurnace unit length guipure is allowed significantly promotes, the production capacity of sintering furnace is increased, in actual use, production capacity comparatively passes by increase one times nearly, and fast dewaxing section shortens greatly than electrical heating dewaxing segment length in the past in sintering furnace, decrease guipure length, in a disguised form provide cost savings, in addition, lubricant Thorough combustion, the flue gas of fire door reduces, reduce environmental pollution.
Accompanying drawing explanation
Fig. 1: the utility model structural representation.
In figure, the implication of each Reference numeral is: 1-dewaxing device, 2-nozzle, 3-carborundum base plate, 4-guipure, 5-mullite top board, 6-heat-insulation layer.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail, is easier to make technical solutions of the utility model understand and grasp.
A kind of process for dewaxing of fuel heating, it is using paraffin gas as heating medium, and after fully mixing with the ratio of 20:1 ~ 30:1 with air, burn and transforming, temperature is passed into not higher than in the burner hearth of the fast dewaxing device of 550 DEG C through nozzle, carry out radiation heating dewaxing to pressed compact, the gas after described conversion in access equipment mainly consists of CO
2, CO, H
2o, H
2, N
2, its dew point is about+40 ~+50 DEG C, and during described pressed compact dewaxing, pressed compact temperature is 425 DEG C ~ 540 DEG C, and its reactive chemistry formula is
C
MH
N+H
2O+CO
2+O
2+N
2→CO+H
2+(H
2O+CO
2+O
2+N
2)+C 。
Wherein said paraffin gas is propane, and described propane and air mixture ratio are 25:1.
As shown in Figure 1, a kind of dewaxing device 1 of fuel heating, it adopts without the full brick structure of flue, and bottom it and side is mullite brick, and its hollow is burner hearth, workpiece is placed on guipure 4, advance in the middle of burner hearth, burner hearth bottom arranged on left and right sides is respectively provided with a nozzle 2, and guipure 4 is placed on a carborundum base plate 3, be provided with mullite top board 5 above burner hearth, outside mullite top board 5, be provided with heat-insulation layer 6.
Wherein, heat-insulation layer 6 is heat-preservation cotton, in addition, the symmetrical setting of nozzle 2, and burner hearth is left and right symmetrical structure, burner hearth both sides and nozzle 2 corresponding position are the tilted shape of left and right symmetry, for gas flow guiding, mullite top board 5 is in a symmetrical gusseted shape, and particularly, mullite top board corner angle is 140
0.Mixed gas is sprayed into by nozzle and burns, and oxidizing atmosphere is sprayed onto product surface through convolution, carries out fast dewaxing reaction.
The oxidizing atmosphere directly contact lubricated dose in burner hearth is passed into through nozzle, dewaxing effect significantly promotes, especially to nickelic product, shorten the dewaxing time simultaneously, the bearing capacity that meshbeltfurnace unit length guipure is allowed significantly promotes, the production capacity of sintering furnace is increased, in actual use, production capacity comparatively passes by increase one times nearly, and in sintering furnace, fast dewaxing section shortens greatly than electrical heating dewaxing segment length in the past, decrease guipure length, in a disguised form provide cost savings, in addition, lubricant Thorough combustion, the flue gas of fire door reduces, and reduces environmental pollution.
By describing above and can finding out, this technical scheme improves dewaxing effect, especially to nickelic product, and shortens the dewaxing time, improves sintering furnace production capacity, reduces production cost and decreases environmental pollution.
Above technical solutions of the utility model are described in detail; cited is only typical exemplary applications; it is to be understood that; by to the combination of same or similar technical characteristic and replacement; can form multiple specific embodiments, these schemes all drop within protection domain of the present utility model.
Claims (5)
1. the dewaxing device with fuel heating, be characterised in that, it adopts without the full brick structure of flue, and bottom it and side is mullite brick, and its hollow is burner hearth, workpiece is placed on guipure, advance in the middle of burner hearth, described burner hearth bottom arranged on left and right sides is respectively provided with a nozzle, and described guipure is placed on a carborundum base plate, be provided with mullite top board above described burner hearth, outside described mullite top board, be provided with heat-insulation layer.
2. the dewaxing device of a kind of fuel heating according to claim 1, it is characterized in that, described heat-insulation layer is heat-preservation cotton.
3. the dewaxing device of a kind of fuel heating according to claim 1 and 2, is characterized in that, the symmetrical setting of described nozzle.
4. the dewaxing device of a kind of fuel heating according to claim 3, it is characterized in that, described burner hearth is left and right symmetrical structure, and burner hearth both sides and described nozzle corresponding position are the tilted shape of left and right symmetry, for gas flow guiding, described mullite top board is a symmetrical gusseted shape.
5. the dewaxing device of a kind of fuel heating according to claim 4, it is characterized in that, described mullite top board corner angle is 140
0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520265353.4U CN204711189U (en) | 2015-04-29 | 2015-04-29 | A kind of dewaxing device of fuel heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520265353.4U CN204711189U (en) | 2015-04-29 | 2015-04-29 | A kind of dewaxing device of fuel heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204711189U true CN204711189U (en) | 2015-10-21 |
Family
ID=54310218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520265353.4U Expired - Fee Related CN204711189U (en) | 2015-04-29 | 2015-04-29 | A kind of dewaxing device of fuel heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204711189U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801711A (en) * | 2015-04-29 | 2015-07-29 | 宁波依司特加热设备有限公司 | Dewaxing method and dewaxing device heated by fuel |
-
2015
- 2015-04-29 CN CN201520265353.4U patent/CN204711189U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801711A (en) * | 2015-04-29 | 2015-07-29 | 宁波依司特加热设备有限公司 | Dewaxing method and dewaxing device heated by fuel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |