Crude benzene condenser array and working method thereof

Abstract

The invention discloses a crude benzene condenser array and a working method thereof.The crude benzene condenser array comprises a condenser array body, the condenser array body is composed of a plurality of condensers which are distributed in a linear array mode and parallel to one another, each condenser comprises a cold water pipe and a spiral condensation pipe, and the condensation pipes are arranged in the cold water pipe in the length direction; the two ends of the outer wall of the cold water pipe are communicated with a cooling water inlet and a hot water outlet respectively, the front end and the rear end of the cold water pipe are connected with a front end cover and a rear end cover respectively, a steam inlet and a distillate outlet are formed in the axis of the front end cover and the axis of the rear end cover respectively, and the two ends of the spiral condensation pipe are communicated with the steam inlet and the distillate outlet respectively. In the condensers distributed in an array mode, the sides, close to each other, of the ends, close to the cooling water inlet, of any two adjacent cold water pipes are communicated through communicating pipes, and electromagnetic valves are arranged in the communicating pipes. The two adjacent condensers can be matched with each other in the working process, and when one circulating cooling device breaks down, the circulating cooling device does not need to be shut down immediately for maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of crude benzene condensation and cooling, and more specifically to a crude benzene condenser array and a working method thereof. Background Art

[0002] The crude benzene condensing device is a key equipment for recovering and treating the crude benzene generated in the coking process. The most common crude benzene condensing device is to pass the cooling water generated by the circulating cooling device into a huge cooling tank to quickly cool down the condenser tube. The existing improved condensing device is to pass the cooling water generated by the circulating cooling device into multiple cooling tanks arranged in parallel to quickly cool down the condenser tube, which effectively improves the efficiency of crude benzene condensation. However, when the circulating cooling device fails, it is necessary to stop the cooling operation immediately and overhaul the entire circulating cooling device, thereby interrupting the crude benzene condensation process, thereby affecting the progress of the previous and subsequent related production processes. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a crude benzene condenser array and a working method thereof. By arranging a connecting pipe and a liquid exchange box between two adjacent condensers in the condenser array, the two adjacent condensers can cooperate with each other during the working process. Through the circulating cooling device connected to each condenser, when a circulating cooling device connected to a condenser fails, the cooling water in other adjacent condensers can enter the failed condenser through the connecting pipe and the liquid exchange box, thereby ensuring the normal progress of the crude benzene condensation process.

[0004] Technical solution: To achieve the above-mentioned purpose, a crude benzene condenser array and a working method thereof of the present invention include a condenser array, which is composed of a plurality of condensers distributed along a linear array and arranged in parallel with each other, each condenser including a cold water pipe and a spiral condenser tube, the condenser tube is in the cold water pipe along the length direction, and the outer walls of the cold water pipe are connected at both ends with a cooling water inlet and a hot water outlet respectively, the front and rear ends of the cold water pipe are connected with a front cover and a rear cover respectively, the front cover and the rear cover are provided with a steam inlet and a distillate outlet at their axis respectively, and the two ends of the spiral condenser tube are connected with the steam inlet and the distillate outlet respectively; in the plurality of condensers distributed in the array, any two adjacent cold water pipes are connected at one end close to the cooling water inlet by a connecting pipe, and each connecting pipe is provided with a solenoid valve.

[0005] Furthermore, in several array-distributed condensers, any three consecutive adjacent cold water pipes are respectively recorded as the first cold water pipe, the second cold water pipe and the third cold water pipe, and the first cold water pipe, the second cold water pipe and the third cold water pipe contain the first cooling water chamber, the second cooling water chamber and the third cooling water chamber respectively; the connecting pipe between the first cold water pipe and the second cold water pipe is recorded as the first connecting pipe, and the connecting pipe between the third cold water pipe and the second cold water pipe is recorded as the second connecting pipe, the middle section of the first cold water pipe and the middle section of the second cold water pipe are connected on one side close to each other through a first liquid exchange box, and the middle section of the third cold water pipe and the middle section of the second cold water pipe are connected on one side close to each other through a second liquid exchange box; the first cold water pipe, the second cold water pipe and the third cold water pipe are respectively provided with a first hot water outlet, a second hot water outlet and a third hot water outlet, and the first hot water outlet, the second hot water outlet and the third hot water outlet are respectively connected with a first throttle, a second throttle and a third throttle with adjustable flow.

[0006] Furthermore, the first liquid exchange box is a box structure extending along the length direction of the first cold water pipe or the second cold water pipe, and a first rotating body is arranged in the first liquid exchange box. When the first rotating body rotates, the first cooling water chamber and the second cooling water chamber undergo periodic liquid exchange under the rotation of the first rotating body.

[0007] The second liquid exchange box is a box structure extending along the length direction of the second cold water pipe or the third cold water pipe. A second rotating body is arranged in the second liquid exchange box. When the second rotating body rotates, the second cooling water chamber and the third cooling water chamber undergo periodic liquid exchange under the rotation of the second rotating body.

[0008] Furthermore, a first column cavity is provided in the first liquid exchange box along the length direction, the axis of the first column cavity is parallel to the axis of the first cold water pipe or the second cold water pipe, and the two sides of the first column cavity are connected to the first cooling water cavity and the second cooling water cavity respectively;

[0009] The first rotating body includes a first central axis, which is coaxial with the axis center of the first column cavity, and the first left fan-shaped column and the first right fan-shaped column are symmetrically connected in the extension direction on both sides of the first central axis, and the upper and lower sides between the first left fan-shaped column and the first right fan-shaped column respectively form a first upper fan-shaped exchange column cavity and a first lower fan-shaped exchange column cavity, and the outer diameter of the complete cylinder formed by the first left fan-shaped column, the first right fan-shaped column, the first upper fan-shaped exchange column cavity and the first lower fan-shaped exchange column cavity is the same as the inner diameter of the first column cavity or has a clearance fit.

[0010] Furthermore, in the initial state, the outer arc surface of the first left fan-shaped column and the outer arc surface of the first right fan-shaped column are respectively facing the first cooling water chamber side and the second cooling water chamber side, and the upper parts of the outer arc surface of the first left fan-shaped column and the outer arc surface of the first right fan-shaped column are slidingly matched with the inner wall of the first column cavity, and the lower parts of the outer arc surface of the first left fan-shaped column and the outer arc surface of the first right fan-shaped column are slidingly matched with the inner wall of the first column cavity.

[0011] Furthermore, a first left mounting groove and a first right mounting groove are respectively opened at the center of the outer arc surface of the first left fan-shaped column and the outer arc surface of the first right fan-shaped column, and a first temperature sensor group and a second temperature sensor group are respectively installed in the first left mounting groove and the first right mounting groove. In an initial state, the first temperature sensor detects the temperature in the first cooling water chamber, and the second temperature sensor group detects the temperature in the second cooling water chamber.

[0012] Furthermore, a second column cavity is provided in the second liquid exchange box along the length direction, the axis of the second column cavity is parallel to the axis of the second cold water pipe or the third cold water pipe, and the two sides of the second column cavity are connected to the second cooling water cavity and the third cooling water cavity respectively;

[0013] The second rotating body includes a second central axis, which is coaxial with the axis center of the second column cavity. The second left fan-shaped column and the second right fan-shaped column are symmetrically connected in the extension direction on both sides of the second central axis. The upper and lower sides between the second left fan-shaped column and the second right fan-shaped column respectively form a second upper fan-shaped exchange column cavity and a second lower fan-shaped exchange column cavity. The outer diameter of the complete cylinder formed by the second left fan-shaped column, the second right fan-shaped column, the second upper fan-shaped exchange column cavity and the second lower fan-shaped exchange column cavity is the same as or has a clearance fit with the inner diameter of the second column cavity.

[0014] Furthermore, in the initial state, the outer arc surface of the second left fan-shaped column and the outer arc surface of the second right fan-shaped column are respectively facing the two sides of the second cooling water chamber and the two sides of the second cooling water chamber, and the upper parts of the outer arc surface of the second left fan-shaped column and the outer arc surface of the second right fan-shaped column are slidingly matched with the inner wall of the second column cavity, and the lower parts of the outer arc surface of the second left fan-shaped column and the outer arc surface of the second right fan-shaped column are slidingly matched with the inner wall of the second column cavity.

[0015] Furthermore, a second left mounting groove and a second right mounting groove are respectively opened at the center of the outer arc surface of the second left fan-shaped column and the outer arc surface of the second right fan-shaped column, and a third temperature sensor group and a fourth temperature sensor group are respectively installed in the second left mounting groove and the second right mounting groove. In the initial state, the third temperature sensor detects the temperature in the second cooling water chamber, and the fourth temperature sensor group detects the temperature in the third cooling water chamber.

[0016] Furthermore, the control system controls the first liquid exchange box and the second liquid exchange box to work alternately. When a fault occurs in the second circulating cooling device connected to the second cold water pipe, the temperature of the cooling water in the second cooling water chamber rises. At this time, the second solenoid valve is in a closed state, and the control system controls the first solenoid valve to change from a closed state to a connected state, so that the cooling water in the first cooling water chamber enters the second cooling water chamber through the first connecting pipe. By adjusting the first throttle connected to the first hot water outlet of the first cold water pipe and the second throttle connected to the second hot water outlet of the second cold water pipe, the flow rates of the cooling water in the first cold water pipe and the second cold water pipe are made the same; then, the power of the first circulating cooling device connected to the first cold water pipe is increased, and the output power of the driving device is set according to the difference between the temperatures detected by the first temperature sensor group and the second temperature sensor group, and the driving device drives the first central axis to rotate;

[0017] After a period of time, the temperatures in the first cold water pipe and the second cold water pipe detected by the first temperature sensor and the second temperature sensor are basically the same, but there is still a difference between the temperature in the second cold water pipe detected by the third temperature sensor in the second liquid exchange box and the temperature in the third cold water pipe detected by the fourth temperature sensor. If the temperature in the second cold water pipe detected by the third temperature sensor is higher than the temperature in the third cold water pipe detected by the fourth temperature sensor, it is necessary to continue to increase the power of the first circulating cooling device connected to the first cold water pipe. If the temperature in the second cold water pipe detected by the third temperature sensor is lower than the temperature in the third cold water pipe detected by the fourth temperature sensor, it is necessary to reduce the power of the first circulating cooling device connected to the first cold water pipe, so as to finally make the temperatures in the first cold water pipe, the second cold water pipe and the third cold water pipe equal.

[0018] Beneficial effect: A crude benzene condenser array and a working method thereof of the present invention, by arranging a connecting pipe and a liquid exchange box between two adjacent condensers in the condenser array, can enable the two adjacent condensers to cooperate with each other during the working process, and through the circulating cooling device connected to each condenser accordingly, when a circulating cooling device connected to a condenser fails, the cooling water in other adjacent condensers can enter the failed condenser through the connecting pipe and the liquid exchange box, thereby ensuring the normal progress of the crude benzene condensation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the condenser group of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of each condenser of the present invention;

[0021] Figure 3 is a schematic diagram of the array distribution of the condenser array of the present invention;

[0022] Figure 4 It is a cross-sectional view of the assembly of the first liquid exchange box and the first cold water pipe and the second cold water pipe of the present invention;

[0023] Figure 5 is a cross-sectional view of the first liquid exchange box of the present invention in an initial state;

[0024] Figure 6 It is a cross-sectional view of the first central axis of the first liquid exchange box of the present invention after rotating for one rotation cycle;

[0025] Figure 7 A cross-sectional view of the second liquid exchange box of the present invention in an initial state DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] As attached Figures 1 to 7 As shown, a crude benzene condenser array and a working method thereof, comprising a condenser array, such as Figure 3 As shown, the condenser array is composed of a number of condensers distributed along a straight line array and arranged in parallel with each other, such as Figure 2 As shown, each condenser includes a cold water pipe 2 and a spiral condensing pipe 3. The condensing pipe 3 is inside the cold water pipe 2 along the length direction. The condensing pipe 3 is coaxially fixed at the center of the cold water pipe 2. The outer wall of the cold water pipe 2 is connected at both ends with a cooling water inlet 21 and a hot water outlet 22. The cooling water inlet 21 and the hot water outlet 22 are located on the same side of the cold water pipe 2, and the cooling water inlet 21 and the hot water outlet 22 are symmetrically arranged relative to the center point of the length direction of the cold water pipe 2. The cooling water inlet 21 is connected to the cooling water output end of the circulating cooling device, and the hot water outlet 22 is connected to the hot water input end of the circulating cooling device. The front and rear ends of the cold water pipe are respectively connected with a front cover 5 and a rear cover 6, and the cooling water inlet 21 is located at Near the front end cover 5, the hot water outlet 22 is located near the rear end cover 6, and a steam inlet 51 and a distillate outlet 52 are respectively provided at the axis of the front end cover 5 and the rear end cover 6. Both ends of the spiral condenser 3 are respectively connected to the steam inlet 51 and the distillate outlet 52. A number of array-distributed condensers are connected to a number of circulating cooling devices, and the several circulating cooling devices are independent of each other, and each condenser is connected to a circulating cooling device respectively; in the number of array-distributed condensers, any two adjacent cold water pipes 2 are connected to each other at one end close to the cooling water inlet 21 through a connecting pipe 41, and each connecting pipe 41 is provided with a solenoid valve, and the solenoid valve is in a closed state in the initial state.

[0028] like Figure 2As shown, the cooling water transported from the cooling water output end of the circulating cooling device to the cold water pipe 2 through the cooling water inlet 21 exchanges heat with the crude benzene vapor introduced into the condenser 3 through the steam inlet 51, and the crude benzene vapor is liquefied and discharged from the distillate outlet 52 of the condenser. The temperature of the cooling water in the cold water pipe increases and is discharged from the hot water outlet 22. The hot water discharged from the hot water outlet 22 enters the circulating cooling device again through the hot water input end of the circulating cooling device, and after being cooled by the cooling system in the circulating cooling device, it is once again transported from the cooling water output end of the circulating cooling device to the cold water pipe 2 through the cooling water inlet 21. Among the condensers distributed in a plurality of arrays, when one of the circulating cooling devices connected to any two adjacent condensers fails, the solenoid valve in the connecting pipe 41 connecting the above two condensers is controlled by the control system to change from a closed state to a connected state, so that the cooling water in the condenser of the circulating cooling device that is not faulty enters the condenser of another circulating cooling device that has a fault through the connecting pipe 41.

[0029] like Figure 1As shown, in a plurality of array-distributed condensers, any three consecutive adjacent cold water pipes 2 are respectively recorded as the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c, and the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c form a condenser group, and the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c contain the first cooling water cavity 23a, the second cooling water cavity 23b and the third cooling water cavity 23c respectively; the connecting pipe between the first cold water pipe 2a and the second cold water pipe 2b is recorded as the first connecting pipe 41a, and the first connecting pipe 41a contains the first cooling water cavity 23a, the second cooling water cavity 23b and the third cooling water cavity 23c. The electromagnetic valve set is recorded as the first electromagnetic valve, the connecting pipe between the third cold water pipe 2c and the second cold water pipe 2b is recorded as the second connecting pipe 41b, and the electromagnetic valve set in the second connecting pipe 41b is recorded as the second electromagnetic valve. When the circulating cooling device connected to the second cold water pipe 2b fails, the cooling water cooled by the second circulating cooling device cannot enter the second condensing chamber 23b, and the water temperature of the cooling water in the second condensing chamber 23b rises. At this time, the control system controls the first electromagnetic valve and the second electromagnetic valve to change from a closed state to a connected state, so that the first cold water pipe 2b is connected to the second cold water pipe 2c. The cooling water in the first cooling water chamber 23a of the water pipe 2a enters the second cooling water chamber 23b of the second cooling water pipe 2b through the first connecting pipe 41a, and the cooling water in the third cooling water chamber 23c of the third cooling water pipe 2c enters the second cooling water pipe 2b through the second connecting pipe 41b. However, due to the uneven heat exchange of the cooling water in the first cooling water pipe 2a and the second cooling water pipe 2b, the heat exchange of the cooling water in the third cooling water pipe 2c and the second cooling water pipe 2b is also uneven, and the path of the cooling water in the first cooling water pipe 2a flowing through the first cooling water pipe 2a is different from that in the first cooling water pipe 2c. The paths of the cooling water in 2a flowing through the second cold water pipe 2b are different, and the paths of the cooling water in the third cold water pipe 2c flowing through the third cold water pipe 2c are different from the paths of the cooling water in the third cold water pipe 2c flowing through the second cold water pipe 2b, resulting in a large difference in temperature between the first cold water pipe 2a and the third cold water pipe 2c and the second cold water pipe 2b, and the flow rates of the cooling water in the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c are also different, which will further increase the temperature difference between the first cold water pipe 2a and the third cold water pipe 2c and the second cold water pipe 2b.

[0030] In order to solve the above problems, Figure 1As shown, the middle section of the first cold water pipe 2a and the middle section of the second cold water pipe 2b are connected on one side close to each other through the first liquid exchange tank 42a, and the middle section of the third cold water pipe 2c and the middle section of the second cold water pipe 2b are connected on one side close to each other through the second liquid exchange tank 42b. When the circulating cooling device connected to the second condenser 2b fails, the water temperature of the cooling water in the second condensing chamber 23b rises, and the control system controls the first liquid exchange tank 42a and the second liquid exchange tank 42b to start, and the second cooling water chamber 23b exchanges heat with the first cooling water chamber 23a and the third cooling water chamber 23c respectively; the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c are respectively provided with a first hot water outlet 22a, a second hot water outlet 22b and a third hot water outlet 22c, and the first hot water outlet 22a, the second hot water outlet 22b and the third hot water outlet 22c are all connected with a first throttle, a second throttle and a third throttle with adjustable flow. By adjusting the first throttle, the second throttle and the third throttle, the flow rates of cold water in the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c can be made equal, thereby avoiding the temperature difference between the first cold water pipe 2a and the second cold water pipe 2b or the second condenser pipe 2b and the third cold water pipe 2c caused by different flow rates.

[0031] like Figure 1 As shown, the first liquid exchange box 42a is a box structure extending along the length direction of the first cold water pipe 2a or the second cold water pipe 2b. Figure 4 As shown, a first rotating body is disposed in the first liquid exchange box 42a. When the first rotating body rotates, the first cooling water chamber 23a and the second cooling water chamber 23b undergo periodic liquid exchange under the rotation of the first rotating body.

[0032] like Figure 4 As shown, a first column cavity 421a is arranged in the first liquid exchange box 42a along the length direction, the axis of the first column cavity 421a is parallel to the axis of the first cold water pipe 2a or the second cold water pipe 2b, and the two sides of the first column cavity 421a are respectively connected to the first cooling water cavity 23a and the second cooling water cavity 23b; the first rotating body includes a first central axis 425a, the first central axis 425a is coaxial with the axis of the first column cavity 421a, the first central axis 425a rotates periodically, and the angle rotated by the first central axis 425a in each rotation cycle is 90°, and the period of liquid exchange between the first cooling water cavity 23a and the second cooling water cavity 23b under the rotation of the first rotating body is twice the rotation period of the first central axis 425a; the first central axis 425a is drivingly connected to the first driving device.

[0033] like Figure 5As shown, the first central axis 425a is symmetrically connected to the first left sector column 422a and the first right sector column 423a in the extension direction on both sides, and the outer arc surface of the first left sector column 422a and the outer arc surface of the first right sector column 423a are fixedly installed with a sealing gasket 430. In the cross section of the first liquid exchange box 42a, the upper and lower sides between the first left sector column 422a and the first right sector column 423a respectively form a first upper sector exchange column cavity 424a with a fan-shaped cross section and a first lower sector exchange column cavity 426a with a fan-shaped cross section. 23a, the cross-sectional fan-shaped surface areas of the first upper fan-shaped exchange column cavity 424a and the first lower fan-shaped exchange column cavity 426a are equal, and the cross-sectional fan-shaped surface areas of the first left fan-shaped column 422a and the first right fan-shaped column 423a are larger than the cross-sectional fan-shaped surface areas of the first upper fan-shaped exchange column cavity 424a and the first lower fan-shaped exchange column cavity 426a, and the outer diameter of the complete cylinder formed by the first left fan-shaped column 422a, the first right fan-shaped column 423a, the first upper fan-shaped exchange column cavity 424a and the first lower fan-shaped exchange column cavity 426a is the same as or has a clearance fit with the inner diameter of the first column cavity 421a.

[0034] like Figure 5 As shown, in the initial state, the outer arc surface of the first left fan-shaped column 422a and the outer arc surface of the first right fan-shaped column 423a are respectively facing the first cooling water chamber 23a and the second cooling water chamber 23b, and the upper parts of the outer arc surface of the first left fan-shaped column 422a and the outer arc surface of the first right fan-shaped column 423a are slidingly matched with the inner wall of the first column cavity 421a, and the lower parts of the outer arc surface of the first left fan-shaped column 422a and the outer arc surface of the first right fan-shaped column 423a are slidingly matched with the inner wall of the first column cavity 421a. In this state, the first upper fan-shaped exchange column cavity 424a and the first lower fan-shaped exchange column cavity 426a are in a relatively static state.

[0035] like Figure 5As shown, a first left mounting groove 427a and a first right mounting groove 428a are respectively provided at the center of the outer arc surface of the first left sector column 422a and the outer arc surface of the first right sector column 423a, and a first temperature sensor group 420 and a second temperature sensor group 429 are respectively installed in the first left mounting groove 427a and the first right mounting groove 428a. In the initial state, the first temperature sensor 420 detects the temperature in the first cooling water chamber 23a, and the second temperature sensor group 429 detects the temperature in the second cooling water chamber 23b. The first central axis 425a rotates twice The first temperature sensor group 420 and the second temperature sensor group 429 can respectively detect the temperature in the first cooling water chamber 23a and the second cooling water chamber 23b at this time. For example, after the first central axis rotates for two rotation cycles, the first temperature sensor group 420 faces the second cooling water chamber 23b, and the second temperature sensor group 429 faces the first cooling water chamber 23a. At this time, the first temperature sensor group 420 detects the temperature in the second cooling water chamber 23b, and the second temperature sensor group 429 detects the temperature in the first cooling water chamber 23a.

[0036] like Figure 4 As shown, the second liquid exchange box 42b is a box structure extending along the length direction of the second cold water pipe 2b or the third cold water pipe 2c. A second rotating body is arranged in the second liquid exchange box 42b. When the second rotating body rotates, the second cooling water chamber 23b and the third cooling water chamber 23c undergo periodic liquid exchange under the rotation of the second rotating body.

[0037] like Figure 4 As shown, a second column cavity 421b is arranged in the second liquid exchange box 42b along the length direction, the axis of the second column cavity 421b is parallel to the axis of the second cold water pipe 2b or the third cold water pipe 2c, and the two sides of the second column cavity 421b are respectively connected to the second cooling water chamber 23b and the third cooling water chamber 23c; the second rotating body includes a second central axis 425b, the second central axis 425b is coaxial with the axis of the second column cavity 421b, the second central axis 425b rotates periodically, and the angle rotated by the second central axis 425b in each rotation cycle is 90°, and the period of liquid exchange between the second cooling water chamber 23b and the third cooling water chamber 23c under the rotation of the second rotating body is twice the rotation period of the second central axis 425b; the second central axis 425b is drivingly connected to the second driving device.

[0038] like Figure 7As shown, the second central axis 425b is symmetrically connected to the second left sector column 422b and the second right sector column 423b in the extension direction on both sides, and the outer arc surface of the second left sector column 422b and the outer arc surface of the second right sector column 423b are fixedly installed with a sealing gasket 430. In the cross section of the second liquid exchange box 42b, the upper and lower sides between the second left sector column 422b and the second right sector column 423b respectively form a second upper sector exchange column cavity 424b with a fan-shaped cross section and a second lower sector exchange column cavity 426b with a fan-shaped cross section. The second left sector column 422b and the second right sector column 423b are connected to the second liquid exchange box 42b. The cross-sectional fan-shaped surface areas of the second upper fan-shaped exchange column cavity 424b and the second lower fan-shaped exchange column cavity 426b are equal, and the cross-sectional fan-shaped surface areas of the second left fan-shaped column 422b and the second right fan-shaped column 423b are larger than the cross-sectional fan-shaped surface areas of the second upper fan-shaped exchange column cavity 424b and the second lower fan-shaped exchange column cavity 426b. The outer diameter of the complete cylinder formed by the second left fan-shaped column 422b, the second right fan-shaped column 423b, the second upper fan-shaped exchange column cavity 424b and the second lower fan-shaped exchange column cavity 426b is the same as or has a clearance fit with the inner diameter of the second column cavity 421b.

[0039] like Figure 7 As shown, in the initial state, the outer arc surface of the second left fan-shaped column 422b and the outer arc surface of the second right fan-shaped column 423b are respectively facing the two sides of the second cooling water chamber 23b and the two sides of the third cooling water chamber 23c, and the upper parts of the outer arc surface of the second left fan-shaped column 422b and the outer arc surface of the second right fan-shaped column 423b are slidingly matched with the inner wall of the second column cavity 421b, and the lower parts of the outer arc surface of the second left fan-shaped column 422b and the outer arc surface of the second right fan-shaped column 423b are slidingly matched with the inner wall of the second column cavity 421b. In this state, the second upper fan-shaped exchange column cavity 424b and the second lower fan-shaped exchange column cavity 426b are in a relatively static state.

[0040] like Figure 7As shown, a second left mounting groove 427b and a second right mounting groove 428b are respectively provided at the center of the outer arc surface of the second left sector column 422b and the outer arc surface of the second right sector column 423b, and a second temperature sensor group 420 and a third temperature sensor group 429 are respectively installed in the second left mounting groove 427b and the second right mounting groove 428b. In the initial state, the second temperature sensor 420 detects the temperature in the second cooling water chamber 23b, and the third temperature sensor group 429 detects the temperature in the third cooling water chamber 23c. The second central axis 425b rotates twice During a cycle, the second temperature sensor group 420 and the third temperature sensor group 429 can respectively detect the temperatures in the second cooling water chamber 23b and the third cooling water chamber 23c at this time. For example, after the second central axis rotates for two rotation cycles, the second temperature sensor group 420 faces the third cooling water chamber 23c, and the third temperature sensor group 429 faces the second cooling water chamber 23b. At this time, the second temperature sensor group 420 detects the temperature in the third cooling water chamber 23c, and the third temperature sensor group 429 detects the temperature in the second cooling water chamber 23b.

[0041] Since the first liquid exchange tank 42a and the second liquid exchange tank 42b have the same structure and the same working process, the working process of the first liquid exchange tank 42a and the second liquid exchange tank 42b is mainly described below by taking the first liquid exchange tank 42a as an example. The working principle of the first liquid exchange tank 42a is as follows:

[0042] like Figure 5 As shown, when the circulating cooling device connected to the second cold water pipe 2b fails, the cooling water after being cooled by the second circulating cooling device cannot enter the second condensing chamber 23b, and the cooling water temperature in the second condensing chamber 23b will rise sharply; at this time, the second temperature sensor group 429 sends the collected temperature data in the second condensing chamber 23b to the control system, and the first temperature sensor group 420 sends the collected temperature data in the first condensing chamber 23a to the control system, and the control system starts the driving device, and the driving device drives the first central axis 425a to rotate, and the control system sets the speed at which the driving device drives the first central axis 425a to rotate according to the temperature difference detected by the first temperature sensor group 420 and the second temperature sensor group 429. The larger the temperature difference detected by the first temperature sensor group 420 and the second temperature sensor group 429, the faster the speed at which the driving device drives the first central axis 425a to rotate. It is assumed that in the initial state, there is no liquid in the first upper fan-shaped exchange column chamber 424a and the first lower fan-shaped exchange column chamber 426a.

[0043] like Figure 5As shown, when the first central axis 425 rotates for one cycle, the first left sector column 422a and the first right sector column 423a rotate by an angle of 90°, the outer arc surface of the first left sector column 422a is connected with the lower end of the inner wall of the first column cavity 421a and slides together, the outer arc surface of the first right sector column 423a is connected with the upper end of the inner wall of the first column cavity 421a and slides together, the first upper sector exchange column cavity 424a is connected with the second cooling water cavity 23b, and the second cooling water cavity 23 The cooling water in b fills up the first upper fan-shaped exchange column chamber 424a, and the cooling water that fills up the first upper fan-shaped exchange column chamber 424a rotates together with the first upper fan-shaped exchange column chamber 424a; the first lower fan-shaped exchange column chamber 426a is connected with the first cooling water chamber 23a, and the cooling water in the first cooling water chamber 23a fills up the first lower fan-shaped exchange column chamber 426a, and the cooling water that fills up the first lower fan-shaped exchange column chamber 426a rotates together with the first lower fan-shaped exchange column chamber 426a.

[0044] like Figure 6 As shown, after the first central axis 425 rotates for two cycles, the first left sector column 422a and the first right sector column 423a rotate by an angle of 180°, the outer arc surface of the first left sector column 422a faces the first cooling water chamber 23a, and the outer arc surface of the first right sector column 423a faces the second cooling water chamber 23b. At this time, the positions of the first lower sector exchange column chamber 426a and the first upper sector exchange column chamber 424a are interchanged relative to the initial state, that is, the first lower sector exchange column chamber 426a is located at the first Above the upper fan-shaped exchange column chamber 424a, the first lower fan-shaped exchange column chamber 426a and the first upper fan-shaped exchange column chamber 424a are again in a relatively sealed state, and the cooling water in the second cooling water chamber 23b that is filled with the first upper fan-shaped exchange column chamber 424a is still in the enclosed space formed again by the first upper fan-shaped exchange column chamber 424a; the cooling water in the first cooling water chamber 23a that is filled with the first lower fan-shaped exchange column chamber 426a is still in the enclosed space formed again by the first lower fan-shaped exchange column chamber 426a.

[0045] After the first central axis 425 rotates three cycles, the first left sector column 422a and the first right sector column 423a rotate at an angle of 270°, the outer arc surface of the first left sector column 422a is connected to the upper end of the inner wall of the first column cavity 421a and slides together, the outer arc surface of the first right sector column 423a is connected to the lower end of the inner wall of the first column cavity 421a and slides together, the first upper sector exchange column cavity 424a is connected to the first cooling water cavity 23a, the cooling water of the second cooling water cavity 23b filled in the first upper sector exchange column cavity 424a is mixed with the cooling water in the first cooling water cavity 23a, and the temperature is neutralized, and the mixed first cooling water cavity 23a The cooling water in fills the first upper fan-shaped exchange column chamber 424a, and the cooling water filling the first upper fan-shaped exchange column chamber 424a rotates together with the first upper fan-shaped exchange column chamber 424a; the first lower fan-shaped exchange column chamber 426a is connected to the second cooling water chamber 23b, and the cooling water of the first cooling water chamber 23a filled in the first lower fan-shaped exchange column chamber 426a is mixed with the cooling water in the second cooling water chamber 23b, and the temperature is neutralized, and the mixed cooling water in the second cooling water chamber 23b fills the first lower fan-shaped exchange column chamber 426a, and the cooling water filling the first lower fan-shaped exchange column chamber 426a rotates together with the first lower fan-shaped exchange column chamber 426a.

[0046] After the first central axis 425 rotates four cycles, the first left sector column 422a and the first right sector column 423a rotate by an angle of 360°, the outer arc surface of the first left sector column 422a faces the second cooling water chamber 23b, and the outer arc surface of the first right sector column 423a faces the first cooling water chamber 23a. At this time, the positions of the first lower sector exchange column chamber 426a and the first upper sector exchange column chamber 424a are consistent with the initial state, that is, the first lower sector exchange column chamber 426a is located at the first upper sector exchange column chamber 424a. Below the exchange column chamber 424a, the first lower fan-shaped exchange column chamber 426a and the first upper fan-shaped exchange column chamber 424a are again in a relatively sealed state, and the first cooling water chamber 23a that is filled with the cooling water of the first upper fan-shaped exchange column chamber 424a is still in the enclosed space formed again by the first upper fan-shaped exchange column chamber 424a; the second cooling water chamber 23b that is filled with the cooling water of the first lower fan-shaped exchange column chamber 426a is still in the enclosed space formed again by the first lower fan-shaped exchange column chamber 426a.

[0047] The first central axis 425 rotates for more cycles and the entire process of the above four cycles is repeated in sequence, so that the cooling water in the first cooling water chamber 23a and the second cooling water chamber 23b are exchanged, so that the temperatures in the first cooling water chamber 23a and the second cooling water chamber 23b tend to be the same.

[0048] Taking the condenser group composed of the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c as an example, a working method of a crude benzene condenser array of the present invention is briefly introduced; the control system controls the first liquid exchange box 42a connected to the first cold water pipe 2a and the second cold water pipe 2b and the second liquid exchange box 42b connected to the third cold water pipe 2c and the second cold water pipe 2b to work alternately, that is, when the first liquid exchange box 42a is working, the second liquid exchange box 42b is not working, when the temperature data in the second cooling water chamber 23b transmitted to the control system by the second temperature sensor 429 rises in a short time and is higher than the temperature in the first cooling water chamber 23a transmitted to the control system by the first temperature sensor 420, the control system determines that the second circulating cooling device connected to the second cold water pipe 2b has a fault, and the cooling water after cooling by the second circulating cooling device cannot enter the second condensing chamber 23b, and the water temperature of the cooling water in the second condensing chamber 23b rises. At this time, the second solenoid valve is still in a closed state, and the temperature of the cooling water in the third cooling water chamber 23c will be changed. As a reference value for subsequent adjustment, the control system controls the first solenoid valve to change from a closed state to a connected state, so that the cooling water in the first cooling water chamber 23a of the first cold water pipe 2a enters the second cooling water chamber 23b of the second cold water pipe 2b through the first connecting pipe 41a, and the flow rate of the cooling water in the first cold water pipe 2a and the second cold water pipe 2b is made the same by adjusting the first throttle connected to the first hot water outlet of the first cold water pipe 2a and the second throttle connected to the second hot water outlet of the second cold water pipe 2b; then, the power of the first circulating cooling device connected to the first cold water pipe 2a is increased to make the temperature of the cooling water after cooling by the first circulating cooling device lower; then, according to the difference between the temperatures of the first cold water pipe and the second cold water pipe detected by the first temperature sensor group 420 and the second temperature sensor group 429 respectively, the output power of the driving device is set, and then the control system starts the driving device, and the driving device drives the first central shaft 425a to rotate, and the greater the output power of the set driving device, the faster the rotation speed of the first central shaft 425a is;

[0049] After a period of time, the temperatures in the first cold water pipe 2a and the second cold water pipe 2b detected by the first temperature sensor 420 and the second temperature sensor 429 are basically the same, but there is still a gap between the temperature in the second cold water pipe 2b detected by the third temperature sensor 431 in the second liquid exchange box 24b and the temperature in the third cold water pipe 2c detected by the fourth temperature sensor 432. If the temperature in the second cold water pipe 2b detected by the third temperature sensor 431 is higher than the temperature in the third cold water pipe 2c detected by the fourth temperature sensor 432, it is necessary to continue to increase the power of the first circulating cooling device connected to the first cold water pipe 2a. If the temperature in the second cold water pipe 2b detected by the third temperature sensor 431 is lower than the temperature in the third cold water pipe 2c detected by the fourth temperature sensor 432, it is necessary to reduce the power of the first circulating cooling device connected to the first cold water pipe 2a, so as to finally make the temperatures in the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c equal.

[0050] By using a temperature sensor with higher sensitivity, the temperature error values ​​in the first cold water pipe 2a, the second cold water pipe 2b and the third cold water pipe 2c in this solution can be further reduced.

[0051] The above are preferred embodiments of the present invention. It should be pointed out that a person skilled in the art may make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A crude benzene condenser array, characterized in that: The invention comprises a condenser array, wherein the condenser array is composed of a plurality of condensers distributed in a linear array and arranged in parallel with each other, each of the condensers comprises a cold water pipe (2) and a spiral condenser pipe (3), wherein the condenser pipe (3) is arranged in the cold water pipe (2) along the length direction, and the outer wall of the cold water pipe (2) is connected at both ends thereof with a cooling water inlet (21) and a hot water outlet (22), respectively, and the front and rear ends of the cold water pipe are connected with a front cover (5) and a rear cover (6), respectively, and the axis of the front cover (5) and the rear cover (6) are respectively provided with a steam inlet (51) and a distillate outlet (52), and the two ends of the spiral condenser pipe (3) are connected with the steam inlet (51) and the distillate outlet (52), respectively; in the plurality of condensers distributed in the array, the sides of any two adjacent cold water pipes (2) close to the cooling water inlet (21) are connected to each other through a connecting pipe (41), and each connecting pipe (41) is provided with a solenoid valve.

2. A crude benzene condenser array according to claim 1, characterized in that: In the condensers distributed in a plurality of arrays, any three consecutive adjacent cold water pipes (2) are respectively recorded as a first cold water pipe (2a), a second cold water pipe (2b) and a third cold water pipe (2c); the first cold water pipe (2a), the second cold water pipe (2b) and the third cold water pipe (2c) respectively contain a first cooling water cavity (23a), a second cooling water cavity (23b) and a third cooling water cavity (23c); the connecting pipe between the first cold water pipe (2a) and the second cold water pipe (2b) is recorded as a first connecting pipe (41a); the connecting pipe between the third cold water pipe (2c) and the second cold water pipe (2b) is recorded as a second connecting pipe (41b); the first cold water pipe (2 The middle section of the first cold water pipe (2a) and the side of the middle section of the second cold water pipe (2b) close to each other are connected through a first liquid exchange box (42a), and the middle section of the third cold water pipe (2c) and the side of the middle section of the second cold water pipe (2b) close to each other are connected through a second liquid exchange box (42b); the first cold water pipe (2a), the second cold water pipe (2b) and the third cold water pipe (2c) are respectively provided with a first hot water outlet (22a), a second hot water outlet (22b) and a third hot water outlet (22c); the first hot water outlet (22a), the second hot water outlet (22b) and the third hot water outlet (22c) are respectively connected with a first throttle, a second throttle and a third throttle capable of adjusting flow.

3. A crude benzene condenser array according to claim 2, characterized in that: The first liquid exchange box (42a) is a box structure extending along the length direction of the first cold water pipe (2a) or the second cold water pipe (2b), and a first rotating body is arranged in the first liquid exchange box (42a). When the first rotating body rotates, the first cooling water chamber (23a) and the second cooling water chamber (23b) undergo periodic liquid exchange under the rotation of the first rotating body. The second liquid exchange box (42b) is a box structure extending along the length direction of the second cold water pipe (2b) or the third cold water pipe (2c). A second rotating body is arranged in the second liquid exchange box (42b). When the second rotating body rotates, the second cooling water chamber (23b) and the third cooling water chamber (23c) undergo periodic liquid exchange under the rotation of the second rotating body.

4. A crude benzene condenser array according to claim 3, characterized in that: A first column cavity (421a) is provided in the first liquid exchange box (42a) along the length direction, the axis of the first column cavity (421a) is parallel to the axis of the first cold water pipe (2a) or the second cold water pipe (2b), and the two sides of the first column cavity (421a) are respectively connected to the first cooling water cavity (23a) and the second cooling water cavity (23b); The first rotating body includes a first central axis (425a), which is coaxial with the axis of the first column cavity (421a), and the first left fan-shaped column (422a) and the first right fan-shaped column (423a) are symmetrically connected in the extension direction on both sides of the first central axis (425a), and the upper and lower sides between the first left fan-shaped column (422a) and the first right fan-shaped column (423a) respectively form a first upper fan-shaped exchange column cavity (424a) and a first lower fan-shaped exchange column cavity (426a), and the outer diameter of the complete cylinder formed by the first left fan-shaped column (422a), the first right fan-shaped column (423a), the first upper fan-shaped exchange column cavity (424a) and the first lower fan-shaped exchange column cavity (426a) is the same as or has a clearance fit with the inner diameter of the first column cavity (421a).

5. A crude benzene condenser array according to claim 4, characterized in that: In the initial state, the outer arc surface of the first left fan-shaped column (422a) and the outer arc surface of the first right fan-shaped column (423a) are respectively oriented toward the first cooling water chamber (23a) and the second cooling water chamber (23b), and the upper parts of the outer arc surface of the first left fan-shaped column (422a) and the outer arc surface of the first right fan-shaped column (423a) are slidably matched with the inner wall of the first column chamber (421a), and the lower parts of the outer arc surface of the first left fan-shaped column (422a) and the outer arc surface of the first right fan-shaped column (423a) are slidably matched with the inner wall of the first column chamber (421a).

6. A crude benzene condenser array according to claim 4, characterized in that: A first left mounting groove (427a) and a first right mounting groove (428a) are respectively provided at the center of the outer arc surface of the first left fan-shaped column (422a) and the outer arc surface of the first right fan-shaped column (423a), and a first temperature sensor group (420) and a second temperature sensor group (429) are respectively installed in the first left mounting groove (427a) and the first right mounting groove (428a). In an initial state, the first temperature sensor (420) detects the temperature in the first cooling water chamber (23a), and the second temperature sensor group (429) detects the temperature in the second cooling water chamber (23b).

7. The crude benzene condenser array according to claim 3, characterized in that: A second column cavity (421b) is provided in the second liquid exchange box (42b) along the length direction, the axis of the second column cavity (421b) is parallel to the axis of the second cold water pipe (2b) or the third cold water pipe (2c), and the two sides of the second column cavity (421b) are respectively connected to the second cooling water cavity (23b) and the third cooling water cavity (23c); The second rotating body comprises a second central axis (425b), the second central axis (425b) is coaxial with the axis of the second column cavity (421b), the second left fan-shaped column (422b) and the second right fan-shaped column (423b) are symmetrically connected in the extension direction on both sides of the second central axis (425b), the upper and lower sides between the second left fan-shaped column (422b) and the second right fan-shaped column (423b) respectively form a second upper fan-shaped exchange column cavity (424b) and a second lower fan-shaped exchange column cavity (426b), the outer diameter of the complete cylinder jointly formed by the second left fan-shaped column (422b), the second right fan-shaped column (423b), the second upper fan-shaped exchange column cavity (424b) and the second lower fan-shaped exchange column cavity (426b) is the same as or has a clearance fit with the inner diameter of the second column cavity (421b).

8. A crude benzene condenser array according to claim 7, characterized in that: In the initial state, the outer arc surface of the second left fan-shaped column (422b) and the outer arc surface of the second right fan-shaped column (423b) are respectively oriented toward the two sides of the second cooling water chamber (23b) and the two sides of the second cooling water chamber (23b), and the upper parts of the outer arc surface of the second left fan-shaped column (422b) and the outer arc surface of the second right fan-shaped column (423b) are slidably matched with the inner wall of the second column chamber (421b), and the lower parts of the outer arc surface of the second left fan-shaped column (422b) and the outer arc surface of the second right fan-shaped column (423b) are slidably matched with the inner wall of the second column chamber (421b).

9. The crude benzene condenser array according to claim 7, characterized in that: A second left mounting groove (427b) and a second right mounting groove (428b) are respectively provided at the center of the outer arc surface of the second left fan-shaped column (422b) and the outer arc surface of the second right fan-shaped column (423b), and a third temperature sensor group (431) and a fourth temperature sensor group (432) are respectively installed in the second left mounting groove (427b) and the second right mounting groove (428b). In an initial state, the third temperature sensor (431) detects the temperature in the second cooling water chamber (23b), and the fourth temperature sensor group (432) detects the temperature in the third cooling water chamber (23c).

10. The working method of a crude benzene condenser array according to claim 1, characterized in that: The control system controls the first liquid exchange box (42a) and the second liquid exchange box (42b) to work alternately. When a second circulating cooling device connected to the second cold water pipe (2b) fails, the temperature of the cooling water in the second cooling water chamber (23b) rises. At this time, the second solenoid valve is in a closed state, and the control system controls the first solenoid valve to change from a closed state to a connected state, so that the cooling water in the first cooling water chamber (23a) enters the second cooling water chamber (23b) through the first connecting pipe (41a). By adjusting the first cold water pipe (2a), the cooling water in the second cooling water chamber (23b) is cooled. A first throttle connected to the first hot water outlet (22a) of the first cold water pipe (2b) and a second throttle connected to the second hot water outlet (22b) of the second cold water pipe (2b) are connected to make the flow rate of cooling water in the first cold water pipe (2a) and the second cold water pipe (2b) the same; then the power of the first circulating cooling device connected to the first cold water pipe (2a) is increased, and the output power of the driving device is set according to the difference between the temperatures detected by the first temperature sensor group (420) and the second temperature sensor group (429), and the driving device drives the first central shaft (425a) to rotate; After a period of time, the temperatures in the first cold water pipe (2a) and the second cold water pipe (2b) detected by the first temperature sensor (420) and the second temperature sensor (429) are substantially the same, but there is still a difference between the temperature in the second cold water pipe (2b) detected by the third temperature sensor (431) in the second liquid exchange box (24b) and the temperature in the third cold water pipe (2c) detected by the fourth temperature sensor (432). If the temperature in the second cold water pipe (2b) detected by the third temperature sensor (431) is higher than that in the fourth temperature sensor (432), the temperature in the third cold water pipe (2c) detected by the fourth temperature sensor (432) is greater than that in the fourth cold water pipe (2c). 2) If the temperature in the third cold water pipe (2c) detected by the third temperature sensor (431) is lower than the temperature in the third cold water pipe (2c) detected by the fourth temperature sensor (432), it is necessary to reduce the power of the first circulating cooling device connected to the first cold water pipe (2a), and finally make the temperatures in the first cold water pipe (2a), the second cold water pipe (2b) and the third cold water pipe (2c) equal.

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