CN202041078U - Single-row single-face deep-drawing pressure reduction furnace with double radiation chambers and horizontal tubes for pressure reduction - Google Patents
Single-row single-face deep-drawing pressure reduction furnace with double radiation chambers and horizontal tubes for pressure reduction Download PDFInfo
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- CN202041078U CN202041078U CN2011200189068U CN201120018906U CN202041078U CN 202041078 U CN202041078 U CN 202041078U CN 2011200189068 U CN2011200189068 U CN 2011200189068U CN 201120018906 U CN201120018906 U CN 201120018906U CN 202041078 U CN202041078 U CN 202041078U
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Abstract
The utility model relates to a single-row single-face deep-drawing pressure reduction furnace with double radiation chambers and horizontal tubes for pressure reduction. The radiation chamber A and the radiation chamber B are in the same box type structures and placed parallelly and horizontally; radiation furnace tubes are horizontally arranged on the lateral walls of the radiation chambers along box type inner walls; combustors are evenly arranged at the bottom of each radiation chamber in a vertically and upwardly combusting manner; a convection chamber in a box type structure is symmetrically erected at the tops of the radiation chamber A and the radiation chamber B; the bottom of the convection chamber is communicated with the radiation chambers through a transition section so that flue gas of the radiation chamber A and the radiation chamber B can evenly and symmetrically enter the convection chamber; convection furnace tubes in finned tube structures are horizontally arranged in the convection chamber; and a chimney is positioned in the middle of the top of the convection chamber. As the heating furnace is in the structure, the average heat intensity of the radiation furnace tubes can be improved, the highest heat intensity of the furnace tubes can be reduced, the coking trend of oil in tubes can be decreased, the operation cycle of the pressure reduction furnace in pressure-reduction deep drawing of a pressure reduction device can be prolonged, the yield of oil products can be improved, and product quality can be ensured. Besides, the pressure reduction furnace has the advantages of simple structure, high flexibility, high practicability and the like.
Description
Technical field
The utility model relates to the vacuum distillation apparatus vacuum furnace structure of petroleum chemical industry, particularly single row of tubes single face biradial chamber lying pipe decompression deep drawing vacuum furnace structure.
Background technology
In recent years, imported crude oil is more and more heavier, how the heavy crude deep processing, reduces or does not go out fuel oil, allows the benefit of heaviness crude oil give full play of, and becomes the key of problem.
Decompression deep drawing remarkable in economical benefits: decompression deep drawing operation can effectively reduce the residual oil yield, improve the carbon residue and the density of decompression residuum, give full play to the operation ability of decompression deep drawing device, improve light oil yield, reduce the fuel oil yield, improve the high value added product yield.
One of core technology of decompression deep drawing technology is exactly the design of vacuum furnace.At present, domestic most of vacuum furnace outlet temperature is mostly below 400 ℃, the vacuum furnace outlet temperature of having only the minority device is between 400～405 ℃, 500 ℃ of former constituent contents are generally more than 5% in the decompression residuum, serious in more than 10%, the cut point temperature of decompressed wax oil is generally below 530 ℃, and is the highest below 560 ℃, the decompressed wax oil of Germany MIRO decompressor is when the cut point temperature reaches 605 ℃, and carbon residue still keeps 1.7% level.This shows that the extracting rate that improves decompressor has big potentiality.
Along with the raising of decompression deep drawing vacuum furnace outlet temperature, how to reduce the coking trend of oil product in the vacuum furnace boiler tube, become the key of the problem of decompression deep drawing vacuum furnace design.Adopt the lying pipe structure, base burning device combustion technology, can effectively improve the uniformity in interior flue-gas temperature field of burner hearth and flow field, improve the evenly heat intensity of boiler tube, reduce high-heat strength, can obtain in the boiler tube oil product flow pattern preferably simultaneously, when treating capacity changes in 60%～120 scope, still can obtain desirable fluid flow pattern, avoid occurring disadvantageous flow patterns such as liquid throttling; Adopt dual horizontal box type structure, but the number of tube passes of flexible arrangement boiler tube, and rationally the pressure of oil product falls in the control valve, shortens the time of staying of oil product in pipe, reduces the possibility of coking.
The utility model content
The purpose of this utility model provides a kind of single single face biradial chamber lying pipe decompression deep drawing vacuum furnace, under the prerequisite that satisfies the technological requirement thermal discharge, the coking of oil product in avoiding managing, improve the outlet temperature of decompression deep drawing vacuum furnace,, improve the temperature of vacuum furnace boiler tube outlet by on vacuum furnace, taking specific structural measure, prevent oil product coking in the boiler tube under higher temperature, improve light oil yield, reduce the fuel oil yield, improve the high value added product yield.
Lying pipe decompression deep drawing vacuum furnace in single single face biradial described in the utility model chamber is made up of radiation chamber A and radiation chamber B, convection cell, burner, radiating furnace tube, convection coil and a chimney of two same structures; The radiation chamber A of two same structures and radiation chamber B are case structure, parallel horizontal positioned; Radiating furnace tube is horizontally disposed on the radiation chamber side wall along box inwall; Burner is evenly arranged in the bottom of radiation chamber in the mode of burning vertically upward; Convection cell is a case structure, and symmetry is erected at the top of radiation chamber A and radiation chamber B, and the bottom is communicated with radiation chamber by changeover portion, makes the flue gas of radiation chamber A and radiation chamber B can enter convection cell symmetrically; Convection coil is a fin tube structure, and is horizontally disposed in convection cell; Chimney is positioned at the convection cell crown center.
The operation principle of single single face biradial described in the utility model chamber lying pipe decompression deep drawing vacuum furnace: fuel is emitted elevated temperature heat by the burner combustion that is positioned at the bottom of each box radiation chamber, by single single side radiation mode, heat transferred is positioned at box along the horizontally disposed radiating furnace tube of furnace wall, high-temperature flue gas is by being radiated the changeover portion of convection current then, arrive convection cell, wash away convection coil equably, by the convection heat transfer' heat-transfer by convection mode, the heat transferred convection coil, satisfy the heat of process unit needs.
The application of a kind of single single face biradial chamber lying pipe decompression deep drawing vacuum furnace:
Radiating furnace tube is horizontally disposed in each box radiation chamber inside along box radiation chamber furnace wall, horizontally disposed, burner burns vertically upward, hot flue gas is because draft is upwards mobile, be full of high-temperature flue gas in the burner hearth, give the radiation chamber boiler tube heat radiation, the high-temperature flue gas that each radiation chamber comes out enters convection cell symmetrically.This structure can be arranged the number of tube passes of heating furnace tube neatly, and under the situation of same single side radiation, it is more even to make that boiler tube is heated, and flow pattern is desirable more in the pipe, more compact structure.
The utility model heating furnace can satisfy that treating capacity changes greatly, oil product outlet temperature height, oil product are difficult for the requirement that coking, operation cycle are grown in the pipe.
The utility model possesses following beneficial effect:
1, under the same process heat burden requirement, adopt this structure, the pressure that can reduce oil product falls.
2, the oil product flow pattern still can obtain desirable flow pattern in the pipe when treating capacity changes greatly;
3, boiler tube is heated more evenly, and the evenly heat intensity of raising has reduced maximum heat intensity, avoids oil product because hot-spot and coking;
4, the flexibility of stringing is bigger.But flexible arrangement 2 tube sides, 4 tube sides, 8 tube sides etc.
5, the body of heater height reduces more, and more compact structure is reasonable.
The utility model has adopted a kind of rational decompression deep drawing vacuum furnace structure, has both satisfied the process heat burden requirement, and the outlet temperature that has improved the vacuum furnace oil product has reduced the possibility of oil coke again.This is a kind of structure at present domestic decompression deep drawing vacuum furnace design, and thermal discharge is big, simple in structure, small investment, construction are easy, but the workshop burst make, but also characteristics such as site operation have good application prospects in the heating stove equipment of oil refining apparatus.
Description of drawings
The single single face biradial of Fig. 1 chamber lying pipe decompression deep drawing vacuum furnace structural representation.
The single single face biradial of Fig. 2 chamber lying pipe decompression deep drawing vacuum furnace structural representation.
The single single face biradial of Fig. 3 chamber lying pipe decompression deep drawing vacuum furnace boiler tube arrangement schematic diagram.
The single single face biradial of Fig. 4 chamber lying pipe decompression deep drawing vacuum furnace radiation chamber structural representation
The single single face biradial of Fig. 5 chamber lying pipe decompression deep drawing vacuum furnace convection cell structural representation
Wherein: 1 burner, 2 radiating furnace tubes, 3 changeover portions, 4 convection coils, 5 radiation chamber A, 6 radiation chamber B, 7 convection cells, 8 chimneys
The specific embodiment
Single single face biradial described in the utility model chamber lying pipe decompression deep drawing vacuum furnace is made up of radiation chamber A5 and radiation chamber B6, convection cell 7, burner 1, radiating furnace tube 2, convection coil 4 and a chimney 8 of two same structures; The radiation chamber of two same structures is a case structure, parallel horizontal positioned; 96 radiating furnace tubes divide two box radiation chamber 4 tube sides horizontally disposed in radiation chamber along box radiation chamber inwall both sides attached wall; The burning burner is installed in the bottom of radiation chamber at the bottom of 16 in the mode of burning vertically upward; Convection cell 7 is a case structure, the top that is erected at radiation chamber A5 and radiation chamber B6 of symmetry, and the bottom is communicated with radiation chamber by changeover portion 3, makes the flue gas of two box radiation chambers can enter convection cell 7 symmetrically; Convection coil is 12 rows, and the fin tube structure of 8 pipes of every row is horizontally disposed in convection cell; Chimney 8 is positioned at convection cell 7 crown centers.
Claims (1)
1. a single single face biradial chamber lying pipe decompression deep drawing vacuum furnace is made up of radiation chamber A and radiation chamber B, convection cell, burner, radiating furnace tube, convection coil and a chimney of two same structures; It is characterized in that: the radiation chamber A of two same structures and radiation chamber B are case structure, parallel horizontal positioned; Radiating furnace tube is horizontally disposed on the radiation chamber side wall along box inwall; Burner is evenly arranged in the bottom of radiation chamber in the mode of burning vertically upward; Convection cell is a case structure, and symmetry is erected at the top of radiation chamber A and radiation chamber B, and the bottom is communicated with radiation chamber by changeover portion, makes the flue gas of radiation chamber A and radiation chamber B can enter convection cell symmetrically; Convection coil is a fin tube structure, and is horizontally disposed in convection cell; Chimney is positioned at the convection cell crown center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200189068U CN202041078U (en) | 2011-01-20 | 2011-01-20 | Single-row single-face deep-drawing pressure reduction furnace with double radiation chambers and horizontal tubes for pressure reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200189068U CN202041078U (en) | 2011-01-20 | 2011-01-20 | Single-row single-face deep-drawing pressure reduction furnace with double radiation chambers and horizontal tubes for pressure reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202041078U true CN202041078U (en) | 2011-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200189068U Expired - Lifetime CN202041078U (en) | 2011-01-20 | 2011-01-20 | Single-row single-face deep-drawing pressure reduction furnace with double radiation chambers and horizontal tubes for pressure reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202041078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242888A (en) * | 2013-04-25 | 2013-08-14 | 中国寰球工程公司 | Horizontal double-sided radiation vacuum furnace for vacuum deep cut of heavy crude oil |
-
2011
- 2011-01-20 CN CN2011200189068U patent/CN202041078U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242888A (en) * | 2013-04-25 | 2013-08-14 | 中国寰球工程公司 | Horizontal double-sided radiation vacuum furnace for vacuum deep cut of heavy crude oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |
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| CX01 | Expiry of patent term |