CN203159544U - High-temperature oil-gas anti-coking device for delayed coking device - Google Patents
High-temperature oil-gas anti-coking device for delayed coking device Download PDFInfo
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- CN203159544U CN203159544U CN 201320125576 CN201320125576U CN203159544U CN 203159544 U CN203159544 U CN 203159544U CN 201320125576 CN201320125576 CN 201320125576 CN 201320125576 U CN201320125576 U CN 201320125576U CN 203159544 U CN203159544 U CN 203159544U
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- pipe
- oil gas
- oil
- coking
- coking device
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Abstract
The utility model relates to a high-temperature oil-gas anti-coking device for a delayed coking device. The high-temperature oil-gas anti-coking device is arranged on an oil-gas outlet pipe arranged on the top of a coke tower of a coking device, and is characterized by comprising an annular pipe which is sleeved on the oil-gas outlet pipe and is provided with an oil inlet, wherein the annular pipe is supported on the oil-gas outlet pipe through a plurality of branch pipes; the upper ends of the branch pipes are communicated with the annular pipe; the lower ends of the branch pipes are communicated with the oil-gas outlet pipe; and furthermore, distances are reserved between the lower ends of the branch pipes and the lower end of the oil-gas outlet pipe. Compared with the prior art, the high-temperature oil-gas anti-coking device has the advantages that the high-temperature oil-gas anti-coking device can uniformly spray quenching oil into the oil-gas outlet pipe through the annular pipe and the branch pipes to reduce the temperature of high-temperature oil-gas and avoid coking; any dead angle is avoided; and the on-stream period of the device can be effectively prolonged. The anti-coking device can be applied to a new device and can be used for improving an old device; and furthermore, the anti-coking device is very convenient to modify and has a good application prospect.
Description
Technical field
The utility model relates to a kind of delayed coking unit, specifically refers to a kind of delayed coking unit high-temperature oil gas anti-coking device.
Background technology
Delay coking process has been widely used in refining of petroleum enterprise as important heavy oil upgrading technology.Implement the used major equipment of this delay coking process at present coking heater, coke drum, emptying tower, high-pressure hydraulic pump, coke pit, cold-cut coke water pot and separation column etc. are arranged, coke drum wherein is the stock oil that receives after the coking heater heating, carry out cracking and condensation reaction within it, the high-temperature oil gas that produces enters into separation column from the outlet pipe of the cat head of coke drum, in this process, high-temperature oil gas is coking in the outlet pipe of cat head easily.Like this, duration of service one is long, and coking material stops up this outlet pipe easily, and then will cause that the pressure drop of coke drum raises, and finally causes device to be stopped work.Obviously, such defective will have a strong impact on long period, the safe operation of device, and influence the device economic benefit.
The utility model content
Technical problem to be solved in the utility model is the present situation at prior art, provides a kind of delayed coking unit that effectively prevents coking in the outlet pipe and can guarantee the long-term works better of equipment with high-temperature oil gas anti-coking device.
The utility model solves the problems of the technologies described above the technical scheme that adopts: this delayed coking unit high-temperature oil gas anti-coking device, be installed on the oil gas vent pipe of coke drum cat head of coker, it is characterized in that: comprise the ring pipe that is enclosed within on the described oil gas vent pipe and has oil-in, this ring pipe is supported on the described oil gas vent pipe by a plurality of take-off pipes, and the upper end of each described take-off pipe is communicated with described ring pipe, the lower end of each described take-off pipe is communicated with described oil gas vent pipe, and simultaneously the lower end of the lower end of each described take-off pipe and described oil gas vent pipe is separated with distance between also.
Preferably, the lower end of the lower end of each described take-off pipe and described oil gas vent pipe distance at interval is 200mm～300mm.
The lower end of preferred each described take-off pipe and the lower end of described oil gas vent pipe distance at interval are 250mm.
The quantity of the take-off pipe in the such scheme can arrange according to scale and the concrete needs of device, and preferably, described take-off pipe has four, and is circumferentially uniform along described oil gas vent pipe respectively.
Angle between each take-off pipe and the oil gas vent pipe also can design as the case may be, and the angle between preferred described take-off pipe and the oil gas vent pipe is 30 °.
The distance of the described oil gas vent pipe of the lower end distance upper end of described take-off pipe is 1000～1500mm.
The distance of the described oil gas vent pipe of the lower end distance upper end of preferred described take-off pipe is 1300mm.
Compared with prior art, the utility model can spray quenching oil equably by to ring pipe and each take-off pipe in the oil gas vent pipe, to reduce the high-temperature oil gas temperature, avoids coking, and does not have the dead angle, effectively the on-stream time of extension fixture.Anti-coking device provided by the utility model not only can be applicable to new device, and can be used for the transformation of old device, and transforms very conveniently, has a good application prospect.
Description of drawings
Fig. 1 uses the partial schematic diagram of state for the utility model embodiment;
Fig. 2 is the floor map of the utility model embodiment;
Fig. 3 is the vertical view of Fig. 2.
Embodiment
Describe in further detail below in conjunction with the utility model of accompanying drawing embodiment.
As shown in Figure 1 to Figure 3, this high-temperature oil gas anti-coking device that is installed on the oil gas vent pipe 4 of cat head of coke drum 3 of delayed coking unit comprises:
Take-off pipe 2 has many, evenly distributes along the girth of ring pipe 1, is the supporting tube of ring pipe 1, and its upper port is communicated with the inner chamber of ring pipe, and its lower port is welded on the oil gas vent pipe and is communicated with the inner chamber of oil gas vent pipe 4; Take-off pipe 2 has four in the present embodiment, and the angle between each take-off pipe 2 and the oil gas vent tubular axis line is 30 °, the distance of the following end distance oil gas vent pipe lower end of each take-off pipe 2 is 250mm, and the distance on the last end distance oil gas vent pipe top of each take-off pipe is 1300mm.
The principle of work of this high-temperature oil gas anti-coking device is as follows:
Coke drum when operation, send into quenching oil from oil-in 11 to ring pipe in 1, the quenching oil that enters ring pipe evenly sprays in the oil gas vent pipe 4 from each take-off pipe 2, reduces the temperature of high-temperature oil gas in the oil gas vent pipe.
After using this anti-coking device, can effectively avoid coking in the high-temperature oil gas outlet pipe, thereby prolong the cycle of operation of coke drum.
Claims (7)
1. a delayed coking unit is with high-temperature oil gas anti-coking device, be installed on the oil gas vent pipe of coke drum cat head of coker, it is characterized in that: comprise the ring pipe that is enclosed within on the described oil gas vent pipe and has oil-in, this ring pipe is supported on the described oil gas vent pipe by a plurality of take-off pipes, and the upper end of each described take-off pipe is communicated with described ring pipe, the lower end of each described take-off pipe is communicated with described oil gas vent pipe, and simultaneously the lower end of the lower end of each described take-off pipe and described oil gas vent pipe is separated with distance between also.
2. delayed coking unit according to claim 1 is with high-temperature oil gas anti-coking device, and it is characterized in that: the distance at the interval, lower end of the lower end of each described take-off pipe and described oil gas vent pipe is 200mm～300mm.
3. delayed coking unit according to claim 2 is with high-temperature oil gas anti-coking device, and it is characterized in that: the distance at the interval, lower end of the lower end of each described take-off pipe and described oil gas vent pipe is 250mm.
4. according to claim 1 or 2 or 3 described delayed coking units high-temperature oil gas anti-coking device, it is characterized in that: described take-off pipe has four, and is circumferentially uniform along described oil gas vent pipe respectively.
5. delayed coking unit according to claim 4 is with high-temperature oil gas anti-coking device, and it is characterized in that: the angle between described take-off pipe and the oil gas vent pipe is 30 °.
6. delayed coking unit according to claim 5 is characterized in that with high-temperature oil gas anti-coking device the distance of the described oil gas vent pipe of the lower end distance upper end of described take-off pipe is 1000～1500mm.
7. delayed coking unit according to claim 6 is characterized in that with high-temperature oil gas anti-coking device the distance of the described oil gas vent pipe of the lower end distance upper end of described take-off pipe is 1300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125576 CN203159544U (en) | 2013-03-19 | 2013-03-19 | High-temperature oil-gas anti-coking device for delayed coking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125576 CN203159544U (en) | 2013-03-19 | 2013-03-19 | High-temperature oil-gas anti-coking device for delayed coking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203159544U true CN203159544U (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320125576 Expired - Lifetime CN203159544U (en) | 2013-03-19 | 2013-03-19 | High-temperature oil-gas anti-coking device for delayed coking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203159544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105733648A (en) * | 2014-12-08 | 2016-07-06 | 中国石油天然气股份有限公司 | Delayed coking high-temperature oil-gas line anti-coking device and method |
-
2013
- 2013-03-19 CN CN 201320125576 patent/CN203159544U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105733648A (en) * | 2014-12-08 | 2016-07-06 | 中国石油天然气股份有限公司 | Delayed coking high-temperature oil-gas line anti-coking device and method |
| CN105733648B (en) * | 2014-12-08 | 2017-12-05 | 中国石油天然气股份有限公司 | A kind of Delayed coking high temperature oil-gas line anti-coking method |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |