CN214991310U - Coke cooling device for delaying coking - Google Patents
Coke cooling device for delaying coking Download PDFInfo
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- CN214991310U CN214991310U CN202120396664.XU CN202120396664U CN214991310U CN 214991310 U CN214991310 U CN 214991310U CN 202120396664 U CN202120396664 U CN 202120396664U CN 214991310 U CN214991310 U CN 214991310U
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Abstract
The application discloses coke cooling device of delayed coking relates to delayed coking coke tower technical field, has solved among the prior art coke tower's coke cooling device and to the unsatisfactory volatile content higher in the pitch coke that leads to of steam stripping effect of delayed coking device coke tower, the problem of miscella product output decline. The device comprises a superheated steam pipe network, a water injection pipeline, a first coke tower, a second coke tower, a fractionating tower and an oil-gas separation device; the superheated steam pipe network is respectively communicated with the first coke tower and the second coke tower and is used for feeding superheated steam into the first coke tower and the second coke tower; the water injection pipeline is communicated with the first coke tower and the second coke tower and is used for sending oil gas generated after the first coke tower and/or the second coke tower are/is stopped into the oil-gas separation device; the first coke tower and the second coke tower are respectively communicated with the oil-gas separation device and the fractionating tower. After the device is adopted, the volatile component in the asphalt coke is efficiently reduced, and the yield of the mixed oil product is greatly improved.
Description
Technical Field
The application relates to the technical field of delayed coking coke drums, in particular to a delayed coking cold coke device.
Background
The coke towers of the delayed coking device are in discontinuous switching production, when one coke tower which is not filled with coke is in a normal production process, the other coke tower which is filled with coke is in a coke cooling, coke cutting or preheating state, wherein the coke cooling process is subjected to small steam blowing, large steam blowing, small water supply and large water supply processes, the small steam blowing is firstly cooled to 410 ℃, then the large steam blowing is carried out for cooling to 390 ℃, then the steam blowing is switched to the coke cooling water, the coke cooling water amount is gradually increased, and finally the coke is cooled to 80 ℃ to reach the coke cutting condition.
At present, saturated steam is generally adopted in the existing coke cooling process to strip a coke tower of a delayed coking device, the saturated steam is only 170 ℃, the temperature is low, and the stripping effect is not ideal, so that more oil products are remained in asphalt coke in the coke tower, and the content of volatile components in the asphalt coke is high.
SUMMERY OF THE UTILITY MODEL
The embodiment of this application is through providing a coke cooling device of delayed coking, and the coke cooling device of coke tower among the prior art to delayed coking device coke tower's steam stripping effect unsatisfactory, and then lead to remaining oil in the pitch coke in the coke tower more, and volatile content is higher in the pitch coke, the problem of miscella product output decline.
The embodiment of the utility model provides a coke cooling device of delayed coking, include: the system comprises a superheated steam pipe network, a water injection pipeline, a first coke tower, a second coke tower, a fractionating tower and an oil-gas separation device;
the superheated steam pipe network is respectively communicated with the first coke tower and the second coke tower and is used for sending superheated steam to the first coke tower and the second coke tower;
the water injection pipeline is communicated with the first coke tower and the second coke tower and is used for sending oil gas generated after the first coke tower and/or the second coke tower are/is stopped to the oil-gas separation device;
the first coke tower and the second coke tower are respectively communicated with the oil-gas separation device and the fractionating tower.
Furthermore, a first hand valve and a second hand valve are arranged on the superheated steam pipe net;
the first hand valve and the second hand valve are connected in parallel, and the diameter of a pipeline connected with the two ends of the first hand valve is larger than that of a pipeline connected with the two ends of the second hand valve.
Furthermore, at least one expansion bend is arranged on the superheated steam pipe network.
Further, the first coke drum and the second coke drum are both in communication with a dirty oil line;
a first oil throwing special valve and a second oil throwing special valve are arranged on the dirty oil pipeline;
the first oil slinger special valve is used for controlling the sump oil discharge of the first coke tower;
the second oil slinger valve is used for controlling the sump oil discharge of the second coke tower.
Further, the first coke drum and the second coke drum are switched by a four-way valve;
and a first isolating valve is arranged between the first coke tower and the four-way valve, and a second isolating valve is arranged between the second coke tower and the four-way valve.
Furthermore, a water drain valve and a water injection valve are arranged on the water injection pipeline, and the output end of the water drain valve and the output end of the water injection valve are communicated with the water injection pipeline together.
Furthermore, the water injection pipeline is communicated with the superheated steam pipe network, and a first water injection and steam injection main valve and a second water injection and steam injection main valve are further arranged on the water injection pipeline;
the first water injection and steam injection main valve is used for controlling water and steam to take away oil gas generated by the first coke tower;
and the second water injection and steam injection main valve is used for controlling water and steam to carry away oil gas generated by the second coke tower.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
the embodiment of the utility model provides a pair of coke cooling device of delayed coking lets in superheated steam through the superheated steam pipe network to this coke cooling device, and superheated steam blows vapour for a short time and blows vapour greatly to whole system again, blows in oil gas and steam and carries out oil-gas separation in the oil-gas separation device. Adopt the utility model discloses coke cooling device of delayed coking, the efficient has reduced the volatile matter in the pitch burnt, has improved the output of miscella product greatly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a coke cooling device for delayed coking provided in an embodiment of the present application.
Icon: 1. an oil-gas separation device; 2. a superheated steam pipe network; 21. a dehydration guide shower valve; 22. expansion bending; 23. a first hand valve; 24. a second hand valve; 3. a first coke drum; 31. a first block valve; 4. a second coke drum; 41. a second block valve; 5. a four-way valve; 6. a water injection line; 61. a water drain valve; 62. a water injection valve; 63. a first water injection and steam injection main valve; 64. a second water injection and steam injection main valve; 7. a fractionating column; 8. a dirty oil line; 81. a first oil slinger valve; 82. the second gets rid of the special valve of oil.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the embodiment of the present invention provides a coke cooling device for delayed coking, including: the system comprises a superheated steam pipe network 2, a water injection pipeline 6, a first coke tower 3, a second coke tower 4, a fractionating tower 7 and an oil-gas separation device 1; the superheated steam pipe network 2 is respectively communicated with the first coke tower 3 and the second coke tower 4 and is used for feeding superheated steam into the first coke tower 3 and the second coke tower 4; the water injection pipeline 6 is communicated with the first coke tower 3 and the second coke tower 4 and is used for sending oil gas generated after the first coke tower 3 and/or the second coke tower 4 are/is stopped to the oil-gas separation device 1; the first coke drum 3 and the second coke drum 4 are both communicated with the oil-gas separation device 1 and the fractionating tower 7, respectively.
During the coke cutting, namely when the coke of the first coke drum 3 reaches a certain height, the feeding is required to be switched to the second coke drum 4, and the first coke drum 3 is subjected to coke cooling operation; when the coke in the second coke drum 4 reaches a certain height, the feeding is switched to the first coke drum 3, and the second coke drum 4 is subjected to coke cooling operation.
Firstly, the oil gas in the tower is subjected to small steam blowing, the oil gas is driven out and enters a fractionating tower 7, then large steam blowing and cooling water injection are carried out, the oil gas and the steam generated by the coke tower enter an oil-gas separation device 1 (a venting cooling tower) for oil-gas separation, the oil enters the fractionating tower 7 for fractionation, and the water vapor is condensed and recovered to a sewage treatment system.
The embodiment of the utility model provides a pair of coke cooling device of delayed coking lets in superheated steam through the superheated steam pipe network 2 to this coke cooling device, and superheated steam blows vapour for a short time and blows vapour greatly to whole system again, blows in oil gas and steam and carries out oil-gas separation in the oil-gas separation device 1. Adopt the utility model discloses coke cooling device of delayed coking, because superheated steam's temperature is up to 300 ℃, is favorable to driving out the volatile component in the burnt, the efficient has reduced the volatile component in the pitch burnt, has improved the output of miscella product greatly, improves the oil yield.
In this embodiment, the pipelines of the oil-gas separation device 1, which are respectively communicated with the first coke tower 3 and the second coke tower 4, are further provided with control valves for respectively controlling oil gas in the first coke tower 3 and the second coke tower 4 to enter the oil-gas separation device 1; the fractionating tower 7 is further provided with control valves on the pipelines respectively communicated with the first coke tower 3 and the second coke tower 4, and the oil gas in the first coke tower 3 and the second coke tower 4 is respectively controlled to enter the fractionating tower 7.
Referring to fig. 1, the superheated steam pipe network 2 is provided with a first hand valve 23 and a second hand valve 24; the first hand valve 23 and the second hand valve 24 are connected in parallel, and the diameter of the pipeline connected to the two ends of the first hand valve 23 is larger than that of the pipeline connected to the two ends of the second hand valve 24.
In this embodiment, when small steam blows, the first hand valve 23 is closed, the second hand valve 24 is opened, the opening degree of the valve is controlled by the pressure at the top of the coke tower, and at the same time, the first water injection and steam injection main valve 63 or the second water injection and steam injection main valve 64 is opened, so that oil gas is driven out by small steam blows and enters the fractionating tower 7. When the steam is blown greatly, the second hand valve 24 is closed, the first hand valve 23 is opened, the opening degree of the valve is controlled through the pressure on the top of the coke tower, meanwhile, the second water injection steam injection main valve 64 or the first water injection steam injection main valve 63 is opened, the residual oil gas is driven out through the steam blowing greatly, and the oil gas is separated from the oil gas in the emptying cooling tower, in addition, water is injected into the pipeline, and the residual oil gas is completely driven into the emptying cooling tower.
In practical application, at least one expansion bend 22 is further provided on the superheated steam pipe network 2, and fig. 1 shows a schematic diagram of two expansion bends.
In this embodiment, the superheated steam pipe network 2 is provided with the expansion bend 22 to prevent the pipe from deforming due to expansion with heat and contraction with cold, thereby ensuring the process safety.
As shown in fig. 1, both the first coke drum 3 and the second coke drum 4 are in communication with a dirty oil line 8; a first oil slinger valve 81 and a second oil slinger valve 82 are arranged on the sewage pipeline 8; the first oil slinger valve 81 is used for controlling the sump oil discharge of the first coke drum 3; the second slinger valve 82 is used to control the dirty oil discharge of the second coke drum 4.
In this embodiment, specifically, when the dirty oil in the first coke tower 3 needs to be discharged, the first oil slinger valve 81 is opened, the first water injection and steam injection main valve 63 is closed, and the dirty oil in the first coke tower 3 is recovered to the oil slinger tank along the dirty oil pipeline 8; when the dirty oil in the second coke tower 4 needs to be discharged, the second oil slinger valve 82 is opened, the second water injection and steam injection main valve 64 is closed, and the dirty oil in the second coke tower 4 is recycled to the oil slinger tank along the dirty oil pipeline 8.
Referring to fig. 1, the first coke drum 3 and the second coke drum 4 are switched by a four-way valve 5; a first block valve 31 is provided between the first coke drum 3 and the four-way valve 5, and a second block valve 41 is provided between the second coke drum 4 and the four-way valve 5.
In this embodiment, when the first coke drum 3 is switched to the second coke drum 4, the first blocking valve 31 is closed, the second blocking valve 41 is opened, the four-way valve 5 feeds the coke to the second coke drum 4, the second coke drum 4 performs coke formation operation, and at this time, the first coke drum 3 performs coke cooling operation; when second coke tower 4 switches to first coke tower 3, close second block valve 41, open first block valve 31, feed to first coke tower 3 through cross valve 5, first coke tower 3 carries out the operation of green coke, and at this moment, second coke tower 4 carries out the operation of cold coke.
As shown in fig. 1, a water discharge valve 61 and a water injection valve 62 are provided in the water injection line 6, and an output end of the water discharge valve 61 and an output end of the water injection valve 62 are commonly communicated with the water injection line 6.
In this embodiment, when blowing greatly, need cool off the water injection, inject water into water injection pipeline 6 through water injection valve 62, make the separation that oil gas can be abundant to guarantee completely catch up into in the unloading cooling tower with remaining oil gas.
As shown in fig. 1, the water injection pipeline 6 is communicated with the superheated steam pipe network 2, and the water injection pipeline 6 is further provided with a first water injection and steam injection main valve 63 and a second water injection and steam injection main valve 64; the first water injection and steam injection main valve 63 is used for controlling water and steam to carry away oil gas generated by the first coke tower 3; the second water injection and steam injection main valve 64 is used for controlling water and steam to carry away oil and gas generated by the second coke tower 4.
In this embodiment, the first water injection and steam injection main valve 63 and the second water injection and steam injection main valve 64 are specifically arranged on the pipeline after the superheated steam pipe network and the water injection pipeline 6 are combined, when coke is stopped, water injection and oil gas are simultaneously opened, steam can bring water into the pipeline, and because the steam temperature is higher, the oil gas is driven into the emptying cooling tower through volatilization of the water.
In addition, the superheated steam pipe network 2 of this embodiment is further provided with a dehydration shower valve 21, and the dehydration shower valve 21 is arranged at the lowest point of the superheated steam pipe network 2 and used for discharging the residual liquid in the pipeline after the process is finished.
The various embodiments in this specification are described in an incremental manner, with each embodiment being implemented without limitation to this application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.
Claims (7)
1. A cold coke device for delayed coking, comprising: a superheated steam pipe network (2), a water injection pipeline (6), a first coke tower (3), a second coke tower (4), a fractionating tower (7) and an oil-gas separation device (1);
the superheated steam pipe network (2) is respectively communicated with the first coke tower (3) and the second coke tower (4) and is used for feeding superheated steam to the first coke tower (3) and the second coke tower (4);
the water injection pipeline (6) is communicated with the first coke tower (3) and the second coke tower (4) and is used for feeding oil gas generated after the first coke tower (3) and/or the second coke tower (4) are/is stopped into the oil-gas separation device (1);
the first coke tower (3) and the second coke tower (4) are respectively communicated with the oil-gas separation device (1) and the fractionating tower (7).
2. A delayed coking cold coke device according to claim 1, characterized in that the superheated steam pipe network (2) is provided with a first hand valve (23) and a second hand valve (24);
the first hand valve (23) and the second hand valve (24) are connected in parallel, and the diameter of a pipeline connected with the two ends of the first hand valve (23) is larger than that of a pipeline connected with the two ends of the second hand valve (24).
3. A delayed coking cold coke device according to claim 2, characterized in that the superheated steam network (2) is also provided with at least one expansion bend (22).
4. A cold coke unit for delayed coking according to claim 1, characterized in that both the first coke drum (3) and the second coke drum (4) are in communication with a sewage line (8);
a first oil slinger valve (81) and a second oil slinger valve (82) are arranged on the sewage pipeline (8);
the first oil slinger valve (81) is used for controlling the sump oil discharge of the first coke tower (3);
the second hydro slinger valve (82) is used to control the dirty oil discharge of the second coke drum (4).
5. A cold coke device for delayed coking according to claim 1, characterized in that the first coke drum (3) and the second coke drum (4) are switched by a four-way valve (5);
a first isolating valve (31) is arranged between the first coke tower (3) and the four-way valve (5), and a second isolating valve (41) is arranged between the second coke tower (4) and the four-way valve (5).
6. The coke cooling device for delayed coking according to claim 1, characterized in that a water drain valve (61) and a water filling valve (62) are arranged on the water filling pipeline (6), and the output end of the water drain valve (61) and the output end of the water filling valve (62) are communicated with the water filling pipeline (6) together.
7. The delayed coking cold coke device according to claim 6, characterized in that the water injection line (6) is communicated with the superheated steam pipe network (2), and a first water injection steam injection main valve (63) and a second water injection steam injection main valve (64) are further arranged on the water injection line (6);
the first water injection and steam injection main valve (63) is used for controlling water and steam to carry away oil gas generated by the first coke tower (3);
the second water injection and steam injection main valve (64) is used for controlling water and steam to carry away oil gas generated by the second coke tower (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120396664.XU CN214991310U (en) | 2021-02-23 | 2021-02-23 | Coke cooling device for delaying coking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120396664.XU CN214991310U (en) | 2021-02-23 | 2021-02-23 | Coke cooling device for delaying coking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113004923A (en) * | 2021-04-15 | 2021-06-22 | 山东京阳科技股份有限公司 | Subsequent treatment process for joint coking reaction |
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2021
- 2021-02-23 CN CN202120396664.XU patent/CN214991310U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113004923A (en) * | 2021-04-15 | 2021-06-22 | 山东京阳科技股份有限公司 | Subsequent treatment process for joint coking reaction |
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