CN215335812U - Coke drum special valve system with steam injection and flow stabilization functions - Google Patents
Coke drum special valve system with steam injection and flow stabilization functions Download PDFInfo
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- CN215335812U CN215335812U CN202121247180.5U CN202121247180U CN215335812U CN 215335812 U CN215335812 U CN 215335812U CN 202121247180 U CN202121247180 U CN 202121247180U CN 215335812 U CN215335812 U CN 215335812U
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- 239000000571 coke Substances 0.000 title claims abstract description 80
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 22
- 230000006641 stabilisation Effects 0.000 title claims abstract description 11
- 238000011105 stabilization Methods 0.000 title claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000013072 incoming material Substances 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000002010 green coke Substances 0.000 abstract description 7
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011331 needle coke Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Coke Industry (AREA)
Abstract
The utility model relates to a coke tower special valve system with the functions of steam injection and flow stabilization, which comprises a first coke tower, a second coke tower, a heating furnace incoming material pipeline, a low-pressure steam pipe network and a regulating valve group, wherein oil-gas passages at the tops of the first coke tower and the second coke tower are communicated and connected to an emptying tower and a fractionating tower, the heating furnace incoming material pipeline is connected with a four-way valve, the left end of the four-way valve is connected with the first coke tower through a first coke tower feeding valve, the right end of the four-way valve is connected with the second coke tower through a second coke tower feeding valve, the low-pressure steam pipe network is respectively connected with the first coke tower feeding valve, the four-way valve and the second coke tower feeding valve through a regulating valve group consisting of a flowmeter, a fifth valve, a sixth regulating valve, a seventh valve, an eighth valve and a ninth valve through a tenth valve, an eleventh valve and a twelfth valve, and the utility model has reasonable design, simple structure and easy modification, the problem of current coke tower special valve steam injection flow fluctuation great, seriously influence the stability of green coke quality is solved.
Description
Technical Field
The utility model relates to the technical field of petrochemical industry, in particular to a coke tower special valve system with the function of steam injection and flow stabilization.
Background
The main raw material for producing the needle coke is medium-temperature pitch which is a coal tar deep processing byproduct, refined pitch is prepared by pretreatment, sedimentation and extraction, then the refined pitch is sent into a delayed coking unit as a raw material, green coke is prepared in a coke tower through a series of complex cracking and condensation reactions, the feeding temperature of the coke tower has great influence on the quality of the green coke, and if a stable green coke product is to be obtained, the feeding temperature of the coke tower must be ensured to be less fluctuant and is generally required to be stabilized at +/-1 ℃; on the premise that the outlet temperature of the heating furnace is certain, factors influencing the feeding temperature of the coke drum mainly have the pipeline heat insulation effect and the stability of protecting the steam injection quantity of the steam by special valves such as a four-way valve, a feeding valve and the like.
Because the gas consumption of the delayed coking device is unstable, the pressure fluctuation of a steam main pipe network is large, generally between 0.65 MPa and 0.95MPa, and the fluctuation of the steam injection flow of the special valve steam is large, so that the maximum fluctuation of the feeding temperature of a coke tower is +/-5 ℃, and the stability of the coke quality is seriously influenced.
Disclosure of Invention
The utility model provides a special valve system of a coke tower with the function of stabilizing steam injection flow, which aims to solve the problems that the fluctuation of steam injection flow of the special valve of the coke tower is large, the maximum fluctuation of the feeding temperature of the coke tower is +/-5 ℃, and the stability of coke quality is seriously influenced.
In order to solve the problems, the technical scheme of the utility model is as follows:
a coke tower special valve system with steam injection and flow stabilization functions comprises a first coke tower, a second coke tower, a heating furnace incoming material pipeline and a low-pressure steam pipe network, wherein oil and gas passages on the tops of the first coke tower and the second coke tower are communicated and connected to an emptying tower and a fractionating tower, the heating furnace incoming material pipeline is connected to a four-way valve, the left end of the four-way valve is connected with the first coke tower through a first coke tower feeding valve, the right end of the four-way valve is connected with the second coke tower through a second coke tower feeding valve, the low-pressure steam pipe network is respectively connected to the first coke tower feeding valve through a tenth valve, the four-way valve through an eleventh valve and the second coke tower feeding valve through a twelfth valve, and the coke tower special valve system further comprises a regulating valve group;
the regulating valve group comprises a flow meter, a fifth valve, a sixth regulating valve and a seventh valve, and the low-pressure steam pipe network is connected with the tenth valve, the eleventh valve and the twelfth valve sequentially through the flow meter, the fifth valve, the sixth regulating valve and the seventh valve.
Further, the sixth regulating valve is a pneumatic regulating valve.
Further, a bypass steam line is arranged between the downstream of the seventh valve and the upstream of the fifth valve, and a ninth valve is arranged on the bypass steam line.
Furthermore, a steam branch line is further arranged between the sixth regulating valve and the fifth valve, and an eighth valve is arranged on the steam branch line.
Further, the fifth valve, the seventh valve, the eighth valve, the ninth valve, the tenth valve, the eleventh valve and the twelfth valve are gate valves.
Through the technical scheme, the utility model has the beneficial effects that: the flowmeter can real-time supervision low pressure steam pipe network's flow and feed back to the sixth governing valve, and the sixth governing valve is pneumatic control valve, can be according to the automatic accuse steam injection flow of feedback of flowmeter, even the great fluctuation of steam pressure can not cause the great fluctuation of steam injection volume yet, and bypass steam pipeline and steam branch make things convenient for the maintenance and the maintenance of sixth governing valve. The utility model has reasonable design, simple structure and easy modification, the modified special valve of the coke tower has stable low-pressure steam consumption, the feeding temperature of the coke tower can meet the requirement of controlling +/-1 ℃, the stability of the green coke quality is improved, and the problems that the maximum fluctuation of the feeding temperature of the coke tower is +/-5 ℃ and the stability of the green coke quality is seriously influenced because the steam injection flow fluctuation of the special valve of the existing coke tower is large are solved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The reference numbers in the drawings are as follows: a is a first coke drum, B is a second coke drum, 1 is a first coke drum feed valve, 2 is a first coke drum feed valve, 3 is a four-way valve, 4 is a flowmeter, 5 is a fifth valve, 6 is a sixth regulating valve, 7 is a seventh valve, 8 is an eighth valve, 9 is a ninth valve, 10 is a tenth valve, 11 is an eleventh valve, and 12 is a twelfth valve.
Detailed Description
The utility model is further described with reference to the following figures and detailed description:
as shown in fig. 1, a coke drum special valve system with steam injection and flow stabilization functions comprises a first coke drum a, a second coke drum B, a heating furnace incoming material pipeline and a low-pressure steam pipe network, wherein oil and gas passages at the tops of the first coke drum a and the second coke drum B are communicated and connected to an emptying tower and a fractionating tower, the heating furnace incoming material pipeline is connected to a four-way valve 3, the left end of the four-way valve 3 is connected with the first coke drum a through a first coke drum feeding valve 1, the right end of the four-way valve 3 is connected with the second coke drum B through a second coke drum feeding valve 2, and the low-pressure steam pipe network is respectively connected to the first coke drum feeding valve 1 through a tenth valve 10, the four-way valve 3 through an eleventh valve 11, and the second coke drum feeding valve 2 through a twelfth valve 12.
The coke tower special valve system also comprises a regulating valve group; the regulating valve group comprises a flow meter 4, a fifth valve 5, a sixth regulating valve 6 and a seventh valve 7, a low-pressure steam pipe network sequentially passes through the flow meter 4, the fifth valve 5, the sixth regulating valve 6 and the seventh valve 7 and is then respectively connected with a tenth valve 10, an eleventh valve 11 and a twelfth valve 12, the sixth regulating valve 6 is a pneumatic regulating valve, a bypass steam pipeline is arranged between the downstream of the seventh valve 7 and the upstream of the fifth valve 5, a ninth valve 9 is arranged on the bypass steam pipeline, a steam branch line is further arranged between the sixth regulating valve 6 and the fifth valve 5, an eighth valve 8 is arranged on the steam branch line, and the fifth valve 5, the seventh valve 7, the eighth valve 8, the ninth valve 9, the tenth valve 10, the eleventh valve 11 and the twelfth valve 12 are gate valves.
When in operation, the low-pressure steam pipe network is connected with the first coke tower feeding valve, the four-way valve and the second coke tower feeding valve through the regulating valve group consisting of the flow meter, the fifth valve, the sixth regulating valve, the seventh valve, the eighth valve and the ninth valve respectively through the tenth valve, the eleventh valve and the twelfth valve, the flow meter can monitor the flow of the low-pressure steam pipe network in real time and feed back the flow to the sixth regulating valve, the sixth regulating valve is a pneumatic regulating valve and can automatically control the steam injection flow according to the feedback of the flow meter, even if the steam pressure fluctuates greatly, the steam injection flow can not fluctuate greatly, a bypass steam pipeline and a steam branch line facilitate the overhaul and maintenance of the sixth regulating valve, the utility model has reasonable design, simple structure and easy transformation, the low-pressure steam consumption of the special valve of the coke tower is stable, the stability of the green coke quality is improved, and the problem that the steam injection flow of the existing special valve of the coke tower fluctuates greatly, further causing the problem that the feeding temperature of the coke tower fluctuates by +/-5 ℃ to the maximum extent and seriously affecting the stability of the coke quality.
The detailed description of the present invention is provided in conjunction with the accompanying drawings, but the above description is not intended to limit the present invention, and it is within the scope of the disclosure that various equivalent or equivalent modifications or substitutions may be made to the technical solution of the present invention without departing from the spirit of the present invention.
Claims (5)
1. A coke tower special valve system with steam injection and flow stabilization functions comprises a first coke tower (A), a second coke tower (B), a heating furnace incoming material pipeline and a low-pressure steam pipe network, wherein oil and gas passages at the tops of the first coke tower (A) and the second coke tower (B) are communicated and connected to an emptying tower and a fractionating tower, the coke tower special valve system is characterized in that the heating furnace incoming material pipeline is connected to a four-way valve (3), the left end of the four-way valve (3) is connected with the first coke tower (A) through a first coke tower feeding valve (1), the right end of the four-way valve (3) is connected with the second coke tower (B) through a second coke tower feeding valve (2), the low-pressure steam pipe network is respectively connected to the first coke tower feeding valve (1) through a tenth valve (10), the four-way valve (3) through an eleventh valve (11) and the second coke tower feeding valve (2) through a twelfth valve (12), the coke drum port system further comprises a regulating valve bank;
the regulating valve group comprises a flow meter (4), a fifth valve (5), a sixth regulating valve (6) and a seventh valve (7), and the low-pressure steam pipe network is respectively connected with a tenth valve (10), an eleventh valve (11) and a twelfth valve (12) through the flow meter (4), the fifth valve (5), the sixth regulating valve (6) and the seventh valve (7) in sequence.
2. The coke drum valve system with steam injection and flow stabilization function of claim 1, characterized in that the sixth regulating valve (6) is a pneumatic regulating valve.
3. The coke drum valve system with steam injection and flow stabilization functions of claim 1, characterized in that a bypass steam line is provided between the downstream of the seventh valve (7) and the upstream of the fifth valve (5), and a ninth valve (9) is provided on the bypass steam line.
4. The coke drum valve system with steam injection and flow stabilization functions of claim 1, characterized in that a steam branch line is further arranged between the sixth regulating valve (6) and the fifth valve (5), and an eighth valve (8) is arranged on the steam branch line.
5. The coke drum valve system with steam injection and flow stabilization functions of claim 1, wherein the fifth valve (5), the seventh valve (7), the eighth valve (8), the ninth valve (9), the tenth valve (10), the eleventh valve (11) and the twelfth valve (12) are gate valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121247180.5U CN215335812U (en) | 2021-06-04 | 2021-06-04 | Coke drum special valve system with steam injection and flow stabilization functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121247180.5U CN215335812U (en) | 2021-06-04 | 2021-06-04 | Coke drum special valve system with steam injection and flow stabilization functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215335812U true CN215335812U (en) | 2021-12-28 |
Family
ID=79551074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121247180.5U Active CN215335812U (en) | 2021-06-04 | 2021-06-04 | Coke drum special valve system with steam injection and flow stabilization functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215335812U (en) |
-
2021
- 2021-06-04 CN CN202121247180.5U patent/CN215335812U/en active Active
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| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 467400 Shang Jiu Wu Zhen Fang Zhuang Cun Bai Yi Tang natural village north, Baofeng County, Pingdingshan City, Henan Province Patentee after: Pingdingshan Xuyang New Materials Co.,Ltd. Country or region after: China Address before: 467400 Shang Jiu Wu Zhen Fang Zhuang Cun Bai Yi Tang natural village north, Baofeng County, Pingdingshan City, Henan Province Patentee before: Pingdingshan Xuyang Xingyu New Material Co.,Ltd. Country or region before: China |