CN113637494B - Coke tower wall temperature control device and method based on feeding rate - Google Patents
Coke tower wall temperature control device and method based on feeding rate Download PDFInfo
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- CN113637494B CN113637494B CN202111124917.9A CN202111124917A CN113637494B CN 113637494 B CN113637494 B CN 113637494B CN 202111124917 A CN202111124917 A CN 202111124917A CN 113637494 B CN113637494 B CN 113637494B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
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Abstract
The invention provides a device and a method for controlling the wall temperature of a coke tower based on a feeding rate, wherein a plurality of lateral feeding holes are uniformly distributed and arranged around a central feeding hole in the circumferential direction, so that lateral feeding can slowly rise along the wall of the coke tower, the temperature distribution of all parts of the wall of the coke tower is uniform, and the problems that the temperature of the wall of the coke tower is uneven due to more concentrated temperature at the center in the coke tower and the coke tower is deflected too much are avoided; meanwhile, the problem that a large amount of gas phase is rushed up from a central area originally is solved; whether the coke drum is inclined or not is monitored through the electronic level meter, the temperature change of each area of the inner cavity of the coke drum is monitored through the temperature sensor, and the opening and closing angles of valve ports of electronic feed valves of the lateral feed ports on the two sides of the coke drum are roughly controlled according to data collected by the electronic level meter; the valve port opening and closing angle of the lateral feed inlet electronic feed valve on the two sides of the coke drum is accurately controlled according to data collected by the temperature sensor, so that the problems of uneven temperature and overlarge deflection of the coke drum can be further solved.
Description
Technical Field
The invention relates to the technical field of integrated circuit testing, in particular to a device and a method for controlling the wall temperature of a coke tower based on a feeding rate.
Background
The coke tower is the core equipment of the coking device, the cracking and condensation coking reaction of coking is carried out in the coke tower, the coke tower is the reactor of the coking device, and high-temperature residual oil is pressurized and injected into the coke tower through external equipment during working, so that the coking and decoking work is carried out. The original feeding mode of 12 ten thousand needles of coke is central tube feeding, the center of a bottom flange of a bottom cover machine is vertically upward through a feeding tube with phi 200, and the coke tower is directly fed, and the feeding mode brings three defects: 1. causing the flow velocity in the central area of the coke drum to be too high, and affecting the quality of the condensed coke. 2. The gas phase loading of the central gas phase passage of the coke drum is excessive. 3 the temperature of the center in the coke tower is more concentrated to cause uneven temperature of the tower wall and overlarge deflection of the coke tower. For solving the problem in the coke drum production, need improve coke drum feed mode to comparatively concentrate the temperature that causes the tower wall temperature inequality to solving the interior center of coke drum tower, the too big problem of coke drum incline.
Disclosure of Invention
The present invention provides a device and a method for controlling the wall temperature of a coke drum based on a feeding rate, which are used for solving the technical problems.
The present invention provides a coke drum wall temperature control device based on a feed rate, which comprises:
at least three side feed inlets are circumferentially and uniformly distributed at the bottom of the coke drum, the side feed inlets are obliquely communicated with the inner cavity of the coke drum along the same direction, and electronic feed valves are arranged on the side feed inlets;
the temperature sensors are uniformly distributed on the wall of the coke drum in the circumferential direction and used for detecting the temperature of the area of the inner cavity of the coke drum, and the temperature sensors are arranged between two adjacent lateral feed inlets and have the same distance with the wall of the coke drum between the two adjacent lateral feed inlets;
the electronic level gauge is arranged on the wall of the coke tower and used for monitoring whether the coke tower is inclined or not;
and the control module is in communication connection with the electronic level gauge, the electronic feed valve and the temperature sensor respectively and is used for controlling the opening and closing of the electronic feed valve according to signals collected by the electronic level gauge and the temperature sensor.
The present invention also provides a coke drum wall temperature method based on feed rate, comprising the steps of:
monitoring data collected by an electronic level meter and a temperature sensor in real time;
judging whether the coke drum is inclined or not and the inclined direction according to data acquired by the electronic level meter, and respectively controlling the opening and closing angles of valve ports of the electronic feed valves of the lateral feed inlets on the two sides of the coke drum according to the inclined direction of the coke drum;
monitoring the temperature change of each region in the inner cavity of the coke drum according to data acquired by the temperature sensor, and controlling the opening and closing angle of a valve port of the electronic feed valve of the lateral feed port of the temperature sensor in the feeding direction according to the temperature change of each region.
According to the device and the method for controlling the temperature of the wall of the coke tower based on the feeding rate, a plurality of lateral feeding holes are uniformly distributed and arranged on the periphery of a central feeding hole in the circumferential direction, so that lateral feeding can slowly rise along the wall of the coke tower, all parts of the temperature of the wall of the coke tower are uniformly distributed, and the problems that the temperature of the center in the coke tower is concentrated and is easily diffused to the wall of the coke tower to cause uneven temperature of the wall of the coke tower and the coke tower is deflected too much in a central feeding mode are avoided; meanwhile, a low-temperature area is prevented from being formed near the tower wall inside the tower body, the synchronous coking reaction with the center of the tower is ensured, the light component gas phase generated by the reaction is dispersed, and the problem that a large amount of gas phase is uprushed from the center area originally is solved. Whether the coke drum is inclined or not is monitored through the electronic level meter, the temperature change of each area of the inner cavity of the coke drum is monitored through the temperature sensor, and the opening and closing angles of valve ports of electronic feed valves of the lateral feed ports on the two sides of the coke drum are roughly controlled according to data collected by the electronic level meter; the valve port opening and closing angle of the lateral feed inlet electronic feed valve on the two sides of the coke tower is accurately controlled according to data collected by the temperature sensor, so that the problem that the coke tower is deflected too much due to uneven temperature of each area of the tower wall of the coke tower can be further solved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a partial cross-sectional view of a coke drum wall temperature control device based on feed rate in accordance with an embodiment of the present invention;
FIG. 2 is a bottom view of a coke drum wall temperature control device based on feed rate in accordance with an embodiment of the present invention;
FIG. 3 is a block flow diagram of a method for controlling the wall temperature of a coke drum based on feed rate in accordance with an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The invention provides a coke drum wall temperature control device based on a feeding rate, which comprises a side feeding hole 112, an electronic feeding valve, a temperature sensor 13, an electronic level meter 14 and a control module 15.
As shown in fig. 1 and 2, a central feed port 111 is disposed in the center of the bottom 11 of the coke drum 1, three lateral feed ports 112 are uniformly distributed in the circumferential direction around the central feed port 111 and near the wall 12 of the coke drum, the lateral feed ports 112 are all communicated with the inner cavity of the coke drum 1 along the same direction, and the lateral feed ports 112 are all provided with electronic feed valves. When feeding enters the coke drum 1 through the central feeding hole 111 and the lateral feeding hole 112, three lateral feeds can slowly rise along the drum wall 12, so that the temperature distribution of the drum wall 12 is uniform, the problem that the temperature of the center in the coke drum 1 is concentrated by only adopting a central feeding mode, the temperature of the drum wall 12 is uneven when being diffused to the drum wall 12, and the coke drum 1 is deflected too much is solved. Meanwhile, a low-temperature area is prevented from being formed near the tower wall 12 in the tower body, the synchronous coking reaction with the center of the tower is ensured, the light component gas phase generated by the reaction is dispersed, and the problem that a large amount of gas phase is uprushed from the center area originally is solved. Specifically, as shown in fig. 1, the bottom 11 of the coke drum 1 includes an inner peripheral portion 101 and an outer peripheral portion 102, the outer peripheral portion 102 is a bucket-shaped structure, a smaller diameter end of the outer peripheral portion 102 is connected to the inner peripheral portion 101, a larger diameter end is connected to the wall 12 of the coke drum, and an intersecting horizontal line of the outer peripheral portion 102 has an angle difference of 30 °, as shown in fig. 2, the central feed port 111 is disposed at a central position of the inner peripheral portion 101, the bottom 11 of the coke drum 1 is circumferentially and uniformly distributed with a first lateral feed port 112a, a second lateral feed port 112b and a third lateral feed port 112c around the central feed port 111, the first lateral feed port 112a, the second lateral feed port 112b and the third lateral feed port 112c are disposed on the outer peripheral portion 102, and the lateral feed ports 112 are disposed in communication with the inner cavity of the coke drum 1 at an angle from bottom to top, preferably, the lateral feed port 112 is disposed to communicate with the inner cavity of the coke drum from bottom to top at an angle of 120 ° with respect to the bottom 11 of the coke drum in the horizontal direction.
Further, for further making the lateral feeding and the central feeding mix more evenly, as shown in fig. 1, the middle cover plate of the bottom 11 of the coke tower 1 is arranged towards the inner cavity of the tower body in an inwards concave manner, so that a negative pressure turbulence area is easily formed in the inwards concave area of the middle cover plate during the lateral feeding, the lateral feeding and the central feeding mix more evenly, a reaction environment similar to a homogeneous phase is formed, and meanwhile, because the feeding pressure at the center is large, the upward thrust inertia of the material is large, and after the concave structure is formed, the negative pressure and the turbulence are formed, and the upward thrust pressure of the central feeding is reduced.
Three temperature sensors 13 are uniformly distributed on the wall 12 of the coke tower 1 in the circumferential direction, the temperature sensors 13 are arranged between the two adjacent lateral feed inlets 112 and have the same distance with the wall 12 between the two adjacent lateral feed inlets 112, and the temperature sensors 13 are used for detecting the temperature of the area of the inner cavity of the coke tower 1. As shown in fig. 2, a first temperature sensor 131, a second temperature sensor 132 and a third temperature sensor 133 are uniformly distributed on the wall 12 of the coke drum 1, and the first temperature sensor 131 is disposed between the first lateral feed opening 112a and the second lateral feed opening 112b and is equidistant from the wall 12 between the first lateral feed opening 112a and the second lateral feed opening 112 b; the second temperature sensor 132 is arranged between the second lateral feed opening 112b and the third lateral feed opening 112c, and is equidistant from the tower wall 12 between the second lateral feed opening 112b and the third lateral feed opening 112 c; the third temperature sensor 133 is disposed between the third lateral inlet 112c and the first lateral inlet 112a, and has the same distance with the column wall 12 between the third lateral inlet 112c and the first lateral inlet 112 a.
As shown in fig. 1, the electronic level 14 is disposed on the coke drum wall 12, and the electronic level 14 can visually monitor whether the coke drum 1 is tilted.
The control module 15 is respectively in communication connection with the electronic level gauge 14, the electronic feed valve and the temperature sensor 13, the signal input end of the control module is in communication connection with the electronic level gauge 14 and the temperature sensor 13, and the signal output end of the control module is in communication connection with the electronic feed valve. The control module 15 monitors whether the coke drum 1 is inclined or not through the electronic level meter 14, monitors the temperature change of each area in the inner cavity of the coke drum 1 through the temperature sensor 13, and controls the opening and closing of the electronic feeding valve according to signals collected by the electronic level meter 14 and the temperature sensor 13.
Specifically, electronic level meter 14 passes through control module 15 and all side direction feed inlet 112's electronic feed valve communication connection, control module 15 is according to the data that electronic level meter 14 detected, and the electronic feed valve that the corresponding control set up side direction feed inlet 112 on different positions opens and shuts, opens and shuts through controlling electronic feed valve to control side direction feed rate, thereby realize the temperature of the inside near tower wall 12 region of adjusting tower body, and then avoid tower wall 12 uneven temperature to cause the too big problem of coke tower 1 skew.
The temperature sensor 13 is arranged between two adjacent lateral feed inlets 112, and is in communication connection with the electronic feed valve of the lateral feed inlet 112 of the two adjacent lateral feed inlets 112, the feeding direction of which faces the temperature sensor, through the control module 15, and the control module 15 controls the electronic feed valve of the lateral feed inlet 112 of the two adjacent lateral feed inlets 112, the feeding direction of which faces the temperature sensor, to open and close according to the temperature sensor 13 arranged between two adjacent lateral feed inlets 112; the electronic feed valve is controlled to be opened and closed to control the lateral feed rate, so that the temperature of the area near the tower wall 12 in the tower body is adjusted, and the problem that the coke tower 1 is deflected too much due to uneven temperature of the tower wall 12 is further solved. Specifically, the first temperature sensor 131 controls the electronic feed valve of the first lateral feed port 112a through the control module 15; the second temperature sensor 132 controls the electronic feed valve of the second side feed port 112b through the control module 15; the third temperature sensor 133 controls the electronic feed valve of the third lateral feed port 112c through the control module 15.
According to the above apparatus for controlling the wall temperature of a coke drum based on a feeding rate, the present invention further provides a method for controlling the wall temperature of a coke drum based on a feeding rate, which is implemented by using the apparatus for controlling the wall temperature of a coke drum based on a feeding rate, as shown in fig. 3, the method for controlling the wall temperature of a coke drum based on a feeding rate comprises the following steps:
s1, monitoring data collected by the electronic level meter 14 and the temperature sensor 13 in real time, monitoring whether the coke drum 1 is inclined or not according to the electronic level meter 14, and monitoring the temperature change of each area in the inner cavity of the coke drum 1 according to the temperature sensor 13.
S2, judging whether the coke tower 1 is inclined or not and the inclination direction according to the data collected by the electronic level gauge 14, and respectively controlling the opening and closing angles of the valve ports of the electronic feed valves of the side feed ports 112 at the two sides of the coke tower 1 according to the inclination direction of the coke tower 1. The specific operation is as follows:
the control module 15 receives data collected by the electronic level gauge 14, monitors whether the coke drum 1 inclines or not according to the received data, judges the inclination direction of the coke drum 1 according to the data collected by the electronic level gauge 14 when the coke drum 1 inclines, controls the opening and closing angle of the valve port of the electronic feed valve arranged on the side of the inclined side of the coke drum 1, and controls the electronic feed valve arranged on the side of the inclined side of the coke drum 1, wherein the angle of the electronic feed valve arranged on the side of the inclined side of the coke drum 112 is reduced.
S3, judging the temperature change of each area in the inner cavity of the coke tower 1 according to the data collected by the temperature sensor 13, and controlling the opening and closing angle of the valve port of the electronic feed valve of the side feed port 112 of the temperature sensor in the feeding direction according to the temperature change of each area. The specific operation is as follows:
the control module 15 receives and counts data collected by the temperature sensors 13, makes a temperature change curvature table according to the counted data, compares the temperature change curvatures of all the temperature sensors 13 with a preset temperature change curvature threshold value when the coke drum 1 is not inclined, and correspondingly adjusts the opening and closing angles of the valve ports of the electronic feed valves of the lateral feed ports 112 of the temperature sensors, which are oriented to the feed directions corresponding to the temperature sensors 13, according to the curvature differences.
Specifically, the control module 15 roughly controls the opening and closing angle of the valve port of the electronic feed valve of the side feed inlet 112 at two sides of the coke drum 1 according to the data collected by the electronic level meter 14; and the opening and closing angle of the valve port of the electronic feed valve of the side feed inlet 112 at two sides of the coke tower 1 is accurately controlled according to the data collected by the temperature sensor 13.
When the coke tower 1 is inclined, firstly, the inclined position of the coke tower 1 is judged according to the data collected by the electronic level gauge 14, the opening and closing angle of the valve port of the electronic feed valve of the lateral feed port 112 arranged on the inclined side of the coke tower 1 is controlled to be increased, and the angle of the electronic feed valve of the lateral feed port 112 arranged on the side opposite to the inclined direction of the coke tower 1 is controlled to be decreased. Then, the opening and closing angle of the valve port of the electronic feed valve of the feed port 112 on the two sides of the coke drum 1 is finely adjusted according to the data collected by the temperature sensor 13, that is, the temperature change curvature of the temperature sensor 13 arranged on the inclined side of the coke drum 1 is controlled to be larger than the temperature change curvature of the temperature sensor 13 arranged on the side opposite to the inclined direction of the coke drum 1.
However, the coke drum 1 side feed is always less than the center feed, preferably the ratio of the side feed to the center feed is 4: 6.
According to the coke tower wall temperature device and method based on the feeding rate, a plurality of lateral feeding holes 112 are uniformly distributed in the circumferential direction around a central feeding hole 111, so that lateral feeding can slowly rise along the tower wall 12, the temperature distribution of each part of the tower wall 12 is uniform, and the problems that the temperature of the inner center of a coke tower 1 is concentrated and is easily diffused to the tower wall 12 to cause uneven temperature of the tower wall 12 and the coke tower 1 is deflected too much in a central feeding mode are avoided; meanwhile, a low-temperature area is prevented from being formed near the tower wall 12 in the tower body, the synchronous coking reaction with the center of the tower is ensured, the light component gas phase generated by the reaction is dispersed, and the problem that a large amount of gas phase is uprushed from the center area originally is solved. Whether the coke tower 1 is inclined or not is monitored through the electronic level meter 14, the temperature change of each area in the inner cavity of the coke tower 1 is monitored and monitored through the temperature sensor 13, and the opening and closing angles of valve ports of the electronic feed valves of the side feed ports 112 at two sides of the coke tower 1 are roughly controlled according to data collected by the electronic level meter 14; the opening and closing angle of the valve port of the electronic feed valve of the lateral feed inlet 112 at two sides of the coke tower 1 is accurately controlled according to the data collected by the temperature sensor 13, so that the problems that the temperature of each area of the wall 12 of the coke tower is uneven and the coke tower 1 is deflected too much can be further solved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A coke drum wall temperature control apparatus based on feed rate, comprising:
at least three side feed inlets are circumferentially and uniformly distributed at the bottom of the coke drum, the side feed inlets are obliquely communicated with the inner cavity of the coke drum along the same direction, and electronic feed valves are arranged on the side feed inlets;
the temperature sensors are uniformly distributed on the wall of the coke drum in the circumferential direction and used for detecting the temperature of the area of the inner cavity of the coke drum, and the temperature sensors are arranged between two adjacent lateral feed inlets and have the same distance with the wall of the coke drum between the two adjacent lateral feed inlets;
the electronic level gauge is arranged on the wall of the coke tower and used for monitoring whether the coke tower is inclined or not;
and the control module is in communication connection with the electronic level gauge, the electronic feed valve and the temperature sensor respectively and is used for controlling the opening and closing of the electronic feed valve according to signals collected by the electronic level gauge and the temperature sensor.
2. The apparatus of claim 1, wherein the bottom of the coke drum comprises an inner peripheral portion and an outer peripheral portion, the outer peripheral portion has a bucket-shaped structure, the outer peripheral portion has a smaller diameter end connected to the inner peripheral portion and a larger diameter end connected to the wall of the coke drum, the outer peripheral portion has an angle difference of 30 ° with respect to a horizontal line intersecting the outer peripheral portion, the center of the bottom of the coke drum has a central inlet disposed at a central position of the inner peripheral portion, and the lateral inlets are disposed at the outer peripheral portion.
3. The feed rate based coke drum wall temperature control apparatus of claim 1 wherein the lateral feed inlet is disposed in bottom-to-top communication with the coke drum interior.
4. The apparatus of claim 3, wherein the lateral inlet is disposed to communicate with the inner cavity of the coke drum from bottom to top at an angle of 120 ° with respect to the bottom of the coke drum.
5. The feed rate based coke drum wall temperature control apparatus of claim 1, wherein the temperature sensor disposed between adjacent two lateral feed openings is communicatively connected to the electronic feed valve of the lateral feed opening of the adjacent two lateral feed openings facing the temperature sensor in the feeding direction by the control module.
6. A method for controlling a wall temperature of a coke drum using the apparatus for controlling a wall temperature of a coke drum according to a feed rate of any one of claims 1 to 5, comprising the steps of:
monitoring data collected by an electronic level meter and a temperature sensor in real time;
judging whether the coke drum is inclined or not and the inclined direction according to data acquired by the electronic level meter, and respectively controlling the opening and closing angles of valve ports of the electronic feed valves of the lateral feed inlets on the two sides of the coke drum according to the inclined direction of the coke drum;
monitoring the temperature change of each region in the inner cavity of the coke drum according to data acquired by the temperature sensor, and controlling the opening and closing angle of a valve port of the electronic feed valve of the lateral feed port of the temperature sensor in the feeding direction according to the temperature change of each region.
7. The method as claimed in claim 6, wherein the controlling the opening and closing angles of the valve ports of the electronic inlet valves of the lateral inlet ports on both sides of the coke drum according to the inclination direction of the coke drum comprises:
according to the inclination direction of the coke drum, the opening and closing angle of a valve port of the electronic feed valve of the lateral feed port arranged on the inclined side of the coke drum is controlled to be increased, and the angle of the electronic feed valve of the lateral feed port arranged on the side opposite to the inclination direction of the coke drum is controlled to be decreased.
8. The method of claim 6, wherein the temperature variation of each region of the inner cavity of the coke drum is determined according to the data collected by the temperature sensor, and the opening and closing angle of the valve port of the electronic feed valve of the side inlet facing the temperature sensor is controlled according to the temperature variation of each region; the method specifically comprises the following steps:
collecting and counting data of the temperature sensor;
making a temperature change curve table according to the statistical data;
comparing the temperature change curvature of all the temperature sensors with a preset temperature change curvature threshold, and correspondingly adjusting the opening and closing angle of a valve port of the electronic feed valve, facing the lateral feed inlet of the temperature sensor, of the feed direction corresponding to the temperature sensors according to the curvature difference.
9. The method of claim 6, wherein when the coke drum is tilted, the opening/closing angle of the valve port of the electronic inlet valve at the side inlet of the coke drum is roughly controlled according to the data collected by the electronic level; then accurately controlling the opening and closing angles of the valve ports of the electronic feed valves of the lateral feed inlets on the two sides of the coke tower according to data acquired by the temperature sensors; that is, the temperature change curvature of the temperature sensor installed on the inclined side of the coke drum is controlled to be larger than the temperature change curvature of the temperature sensor installed on the opposite side of the inclined direction of the coke drum.
10. The feed rate based coke drum wall temperature process of claim 6, wherein the coke drum side feed is less than the center feed.
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