CN201842816U - Delayed coking heating furnace with L-shaped furnace tube hangers - Google Patents
Delayed coking heating furnace with L-shaped furnace tube hangers Download PDFInfo
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- CN201842816U CN201842816U CN2010205636909U CN201020563690U CN201842816U CN 201842816 U CN201842816 U CN 201842816U CN 2010205636909 U CN2010205636909 U CN 2010205636909U CN 201020563690 U CN201020563690 U CN 201020563690U CN 201842816 U CN201842816 U CN 201842816U
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- boiler tube
- furnace
- radiation chamber
- hung
- chamber
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Abstract
The utility model relates to a delayed coking heating furnace with L-shaped furnace tube hangers, which comprises a furnace body, a convection chamber, a radiation chamber, furnace tubes and burners, and is characterized by also comprising at least one pair of symmetric L-shaped furnace tube hangers; the convection chamber is arranged above the radiation chamber, and convection furnace tubes are horizontally lined in the longitudinal direction in the convection chamber; the L-shaped furnace tube hangers are arranged in the middle part of the radiation chamber, divide the radiation chamber into two symmetric areas and are provided with the furnace tubes along the vertical direction and the horizontal direction, and the inner wall of the radiation chamber is also provided with the furnace tubes which are horizontally lined; and the burners are arranged at the bottom of the radiation chamber and are uniformly arranged along the axial direction of the furnace tubes of the radiation chamber. Under the premise of not changing the overall structure of a traditional coking furnace, the delayed coking furnace with the L-shaped furnace tube hangers adds the furnace tubes in the middle and at the bottom of the coking furnace hearth through the L-shaped furnace tube hangers, not only overcomes the stress damage caused by thermal expansion displacement in the vertical direction of the furnace tube hangers, but also improves the treatment capability.
Description
Technical field
The utility model relates to a kind of process furnace, particularly is used to heat the delay coking heating furnace that the L shaped boiler tube of having of mink cell focus is hung in the refining of petroleum.
Background technology
Delayed coking is a kind of oil secondary processing technology, is meant that the mink cell focus with poor hydrogen is a raw material, carries out the thermally splitting and the condensation reaction of the degree of depth, the technology of process gas, gasoline, diesel oil, wax oil and coke at high temperature (about 500 ℃).So-called postpone to be meant that heating is warming up to the pyrogenic reaction temperature rapidly through process furnace with coking oil (stock oil and turning oil), green coke not in reaction boiler tube carries out pyrogenic reaction again and enter coke drum, so delayed action is arranged, is called the delayed coking technology.
Because crude oil in China generally lays particular stress on, and the wax content height, the yield of diesel oil is low, and the diesel oil distillate yield of domestic crude oil is than on average low 5～7 percentage points of external crude oil.In addition, because China's oil refining enterprise secondary processing is all based on catalytic cracking, diesel and gasoline ratio low (delayed coking is 1.94, and catalytic cracking is 0.56), so delayed coking is to solve diesel and gasoline ratio imbalance between supply and demand, the effective way of increasing output of diesel oil.
After the neutron level gage came into operation, greatly improved in the utilized space of coke drum, and coking furnace has become " bottleneck " of the whole device amount of carrying.How under the constant condition of furnace binding, finish newly-increased processing tasks, reduce facility investment, be one and both urgently presented real requirement again.At present coking furnace expand can technological transformation one be adopt convection tubes as radiator tube to enlarge the radiative transfer area, but the little effective rate of utilization of convection tubes heat transfer coefficient is not high, the 2nd, utilize the existing bigger characteristics of single side radiation process furnace burner hearth volume, set up boiler tube at burner hearth bottom, this method can to a certain degree improve the radiative transfer area, but because the burner hearth bottom space is limited, the bottom is set up the boiler tube radical and is restricted.
Summary of the invention
Technical problem to be solved by this invention is that a kind of delay coking heating furnace that L shaped boiler tube is hung that has will be provided, make under the constant prerequisite of body of heater overall structure, set up boiler tube in coking furnace burner hearth centre and bottom simultaneously, overcome boiler tube and hang stress rupture due to the vertical direction thermal expansion displacement, improve treatment capacity, reduce funnel temperature.
The present invention solves the technical scheme that its technical problem takes:
A kind of have a delay coking heating furnace that L shaped boiler tube is hung, and comprises body of heater, convection chamber, radiation chamber, boiler tube, burner, it is characterized in that also comprising that at least one pair of symmetrically arranged L type boiler tube hangs; Convection chamber is arranged on the top of radiation chamber, convection coil is horizontally arranged on vertically in the convection chamber; L type boiler tube is hung and is arranged on the radiation chamber middle part, and radiation chamber is divided into two symmetrical regions, and L shaped boiler tube is hung along its vertical direction and horizontal direction boiler tube is installed, and horizontal boiler tube also is installed on the radiation chamber inwall; Burner is positioned at the radiation chamber bottom, the axially evenly setting of radiation chamber boiler tube.Horizontal boiler tube is housed; Burner is positioned at the radiation chamber bottom, the axially evenly setting of radiation chamber boiler tube.
It is right that the quantity that above-mentioned boiler tube is hung is preferably 3-12, along axially evenly being provided with of boiler tube in the radiation chamber.
Boiler tube is hung and is cast member, adopts bottom support or top braces.
It is 0～6 that L type boiler tube is hung the boiler tube number that is laid the bottom.
The utility model is under the constant prerequisite of traditional coking furnace overall structure, hang the while by L type boiler tube and set up boiler tube in coking furnace burner hearth centre and bottom, not only overcome boiler tube and hung stress rupture due to the vertical direction thermal expansion displacement, and improved treatment capacity.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure, the 1-convection chamber, the 2-body of heater, 3-L shape boiler tube is hung, 4-radiation chamber, 5-boiler tube, 6-chimney, 7-burner.
Embodiment
Describe concrete structure of the present invention in detail below in conjunction with drawings and Examples.
Below describe and only represent the specific embodiment of the present invention,, and do not limit the invention just for further the present invention will be described.
The utility model mainly by body of heater 2, convection chamber 1, radiation chamber 4, boiler tube 5, L shaped boiler tube hang 3, burner 7 and chimney 6 etc. form.Convection chamber is arranged on the top of radiation chamber, horizontal 17 row's convection coils in the convection chamber, convection coil useful length 11382mm.The high 8252mm in radiation chamber bottom, the wide 4590mm in bottom, the high 1060mm of oblique top, the wide 1870mm in top, furnace superintendent 11382mm.Original 46 boiler tubes of radiation chamber (one way), wherein oblique top portion is 7,31 of bottoms, 8 of shield tubes (2 row).Now oblique top portion is kept to 4, the bottom is kept to 16, shield tube still is 8, newly-increased L shaped boiler tube is hung 4 pairs, every pair contains and L shapedly hangs 2, along axially evenly being provided with of radiating furnace tube, singly to hanging vertical direction 30 radiating furnace tubes is installed, horizontal direction is installed 4 radiating furnace tubes, and the total radical of radiation chamber one way boiler tube increases to 62.The radiation chamber bottom axially evenly is provided with 32 of Φ 470mm burners (2 row) along radiating furnace tube, and 2 row's burner spacings are 1500mm.With transform before compare this novel coking furnace treatment capacity and increased by 15%, realized under the constant prerequisite of body of heater overall structure, improving treatment capacity.
Claims (5)
1. one kind has the delay coking heating furnace that L shaped boiler tube is hung, and comprises body of heater, convection chamber, radiation chamber, boiler tube, burner, it is characterized in that also comprising that at least one pair of symmetrically arranged L type boiler tube hangs; Convection chamber is arranged on the top of radiation chamber, convection coil is horizontally arranged on vertically in the convection chamber; L type boiler tube is hung and is arranged on the radiation chamber middle part, and radiation chamber is divided into two symmetrical regions, and L shaped boiler tube is hung along its vertical direction and horizontal direction boiler tube is installed, and horizontal boiler tube also is installed on the radiation chamber inwall; Burner is positioned at the radiation chamber bottom, the axially evenly setting of radiation chamber boiler tube.
2. according to claim 1 have a delay coking heating furnace that L shaped boiler tube is hung, and it is characterized in that the quantity that boiler tube is hung is that 3-12 is right, along axially evenly being provided with of boiler tube in the radiation chamber.
3. according to claim 1 and 2 have a delay coking heating furnace that L shaped boiler tube is hung, and it is characterized in that boiler tube is hung to adopt bottom support or top braces.
4. as claimed in claim 1 or 2 have a delay coking heating furnace that L shaped boiler tube is hung, and it is characterized in that it is 0～6 that L type boiler tube is hung the boiler tube number that is laid the bottom.
5. according to claim 1 have a delay coking heating furnace that L shaped boiler tube is hung, and it is characterized in that boiler tube is hung to be cast member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205636909U CN201842816U (en) | 2010-10-15 | 2010-10-15 | Delayed coking heating furnace with L-shaped furnace tube hangers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205636909U CN201842816U (en) | 2010-10-15 | 2010-10-15 | Delayed coking heating furnace with L-shaped furnace tube hangers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201842816U true CN201842816U (en) | 2011-05-25 |
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ID=44037712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205636909U Expired - Lifetime CN201842816U (en) | 2010-10-15 | 2010-10-15 | Delayed coking heating furnace with L-shaped furnace tube hangers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201842816U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944667A (en) * | 2012-10-30 | 2013-02-27 | 中国石油化工股份有限公司 | Double-reactor coking raw material evaluation system |
| CN104140841A (en) * | 2013-05-07 | 2014-11-12 | 中国石化工程建设有限公司 | An ethylene cracking furnace |
-
2010
- 2010-10-15 CN CN2010205636909U patent/CN201842816U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944667A (en) * | 2012-10-30 | 2013-02-27 | 中国石油化工股份有限公司 | Double-reactor coking raw material evaluation system |
| CN104140841A (en) * | 2013-05-07 | 2014-11-12 | 中国石化工程建设有限公司 | An ethylene cracking furnace |
| CN104140841B (en) * | 2013-05-07 | 2016-05-11 | 中国石化工程建设有限公司 | A kind of ethane cracking furnace |
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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: 20110525 |
|
| CX01 | Expiry of patent term |