Condenser for separating mixed xylene in petroleum

Abstract

The utility model discloses a condenser for separating mixed xylene in petroleum. The condenser comprises a rectifying tower main body, one end of the exhaust pipe is fixedly communicated with the top of the rectifying tower main body; the interior of the condensation assembly fixedly communicates with the end, away from the rectifying tower body, of the exhaust pipe; the top end of the liquid discharge pipe is fixedly communicated with the bottom of the condensation assembly; and the top of the return tank is fixedly communicated with the bottom end of the liquid discharge pipe. According to the scheme, the rectifying tower body, the exhaust pipe, the condensation assembly, the liquid discharging pipe and the backflow tank are arranged, after gas enters the condensation box from the exhaust pipe, the water inlet valve is opened, cooling liquid flows into the condensation pipe, the cooling liquid can take away the temperature of the gas when flowing through the condensation pipe, and therefore the gas is cooled and liquefied, and then the liquid flows into the liquid discharging pipe from the liquefaction hopper; and finally, the liquid enters the reflux tank, so that the cooling liquid is not in direct contact with the gas, the liquefied liquid is not mixed with the cooling liquid, the purity of the liquid is ensured, and collection and reflux are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of condenser technology, and more specifically, to a condenser for separating petroleum-mixed xylene. Background Technology

[0002] Mixed xylenes contain four isomers: p-xylene, m-xylene, o-xylene, and ethylbenzene. Based on the different volatility of these four isomers, distillation is commonly used industrially to separate o-xylene. However, existing distillation columns are inefficient at separating o-xylene, and cleaning the trays is time-consuming and labor-intensive. Therefore, there is a need to design a xylene separation device that is both highly efficient and easy to clean.

[0003] Patent document publication number CN214181850U describes a high-efficiency separation device for mixed xylene in petroleum, comprising a plate distillation column, a condenser, and a reboiler. The plate distillation column includes an outer shell and annular and circular plates arranged at intervals on the inner side of the outer shell. The outer edge of the annular plate is fixedly connected to the inner wall of the outer shell, and the center of the annular plate has a vertically penetrating channel. A liquid-passing gap is left between the outer edge of the circular plate and the outer shell. A central shaft is also provided inside the outer shell. The central shaft passes through the channel in the center of each annular plate and leaves a liquid-passing gap between the annular plate and the circular plate. The central shaft passes through the center of each circular plate and is sealed and fixedly connected to the circular plate, so that the circular plate can move down with the central shaft. At least one radial cleaning strip is provided under each plate.

[0004] However, it still has some drawbacks in actual use. For example, the condenser used in the separation device usually sends cold water into direct contact with the gas for cooling. However, the gas cooled in this way is easy to mix with the cooling water after liquefaction, which makes it inconvenient to take out the distillate.

[0005] Therefore, a condenser for separating petroleum-mixed xylene was proposed to solve the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a condenser for separating petroleum mixed xylene, so as to solve the problem that the condenser used in the prior art separation device usually sends cold water to directly contact the gas for cooling, but the gas cooled in this way is easy to mix with the cooling water after liquefaction.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a condenser for separating petroleum-mixed xylene, comprising...

[0008] Distillation column body;

[0009] An exhaust pipe, one end of which is fixedly connected to the top of the main body of the distillation column;

[0010] A condenser assembly, the interior of which is fixedly connected to the end of the exhaust pipe away from the main body of the distillation column;

[0011] A drain pipe, the top end of which is fixedly connected to the bottom of the condensation assembly;

[0012] A reflux tank, the top of which is fixedly connected to the bottom end of a drain pipe;

[0013] The condensation assembly includes a condensation box, a liquefaction hopper, a condenser tube, and a water inlet valve. The side of the condensation box is fixedly connected to the end of the exhaust pipe away from the main body of the distillation column. The liquefaction hopper is fixedly installed at the bottom of the condensation box. The condenser tube is located inside the condensation box, and its two ends are fixedly connected to the top and side of the condensation box. The water inlet valve is installed near the top of the condenser tube.

[0014] It also includes a monitoring component, which is located on top of the condensation component.

[0015] The monitoring components include a control terminal, a pressure sensor, an alarm, a pressure relief pipe, and an electronic valve. The control terminal is fixedly installed on the top of the condenser box, the pressure sensor is fixedly installed on the inner wall of the condenser box and is electrically connected to the control terminal, the bottom of the alarm is fixedly connected to the top of the condenser box and is electrically connected to the control terminal, the bottom end of the pressure relief pipe is fixedly connected to the top of the condenser box, and the electronic valve is fixedly installed in the middle of the pressure relief pipe and is electrically connected to the control terminal.

[0016] It also includes a filter screen, which is installed inside the drain pipe and is used to filter out impurities inside after the gas is liquefied.

[0017] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0018] In the above scheme, a distillation column body, an exhaust pipe, a condenser assembly, a drain pipe, and a reflux tank are provided. After the gas enters the condenser from the exhaust pipe, the water inlet valve is opened to allow the coolant to flow into the condenser. As the coolant flows through the condenser, it carries away the temperature of the gas, thereby cooling and liquefying the gas. The liquid then flows from the liquefaction hopper into the drain pipe and finally into the reflux tank. Through the above structure, the coolant does not come into direct contact with the gas, so the liquefied liquid will not mix with the coolant, ensuring the purity of the liquid and facilitating collection and reflux.

[0019] The system is equipped with a monitoring component. A pressure sensor monitors the pressure inside the condenser in real time and sends the signal to the control terminal. When the gas pressure is too high, the control terminal activates the alarm and simultaneously opens the electronic valve to release pressure through the pressure relief pipe. Through this structure, the system can promptly alert staff when the pressure is too high and begin pressure relief to avoid accidents caused by excessive pressure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the condenser assembly structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the monitoring component structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the filter structure of this utility model.

[0024] [Figure Labels]

[0025] 1. Main body of the distillation column; 2. Exhaust pipe;

[0026] 3. Condensation assembly; 31. Condensation box; 32. Liquefaction hopper; 33. Condensation tube; 34. Water inlet valve;

[0027] 4. Drain pipe; 5. Reflux tank;

[0028] 6. Monitoring components; 61. Control terminal; 62. Pressure sensor; 63. Alarm; 64. Pressure relief pipe; 65. Electronic valve;

[0029] 7. Filter screen. Detailed Implementation

[0030] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0031] As attached Figure 1 To be continued Figure 4 An embodiment of this utility model provides a condenser for separating petroleum-mixed xylene, including...

[0032] Distillation column body 1;

[0033] Exhaust pipe 2, one end of which is fixedly connected to the top of the main body 1 of the distillation column;

[0034] The condenser assembly 3 is fixedly connected to the end of the exhaust pipe 2 away from the main body of the distillation column 1.

[0035] Drain pipe 4, the top end of drain pipe 4 is fixedly connected to the bottom of condenser assembly 3;

[0036] The top of the reflux tank 5 is fixedly connected to the bottom of the drain pipe 4;

[0037] The condensing assembly 3 includes a condensing box 31, a liquefaction hopper 32, a condensing pipe 33, and a water inlet valve 34. The side of the condensing box 31 is fixedly connected to the end of the exhaust pipe 2 away from the main body of the distillation column 1. The liquefaction hopper 32 is fixedly installed at the bottom of the condensing box 31. The condensing pipe 33 is located inside the condensing box 31. Both ends of the condensing pipe 33 are fixedly connected to the top and side of the condensing box 31. The water inlet valve 34 is installed near the top of the condensing pipe 33.

[0038] It also includes a monitoring component 6, which is located on top of the condensation component 3.

[0039] The monitoring component 6 includes a control terminal 61, a pressure sensor 62, an alarm 63, a pressure relief pipe 64, and an electronic valve 65. The control terminal 61 is fixedly installed on the top of the condenser 31. The pressure sensor 62 is fixedly installed on the inner wall of the condenser 31 and is electrically connected to the control terminal 61. The bottom of the alarm 63 is fixedly connected to the top of the condenser 31 and is electrically connected to the control terminal 61. The bottom end of the pressure relief pipe 64 is fixedly connected to the top of the condenser 31. The electronic valve 65 is fixedly installed in the middle of the pressure relief pipe 64 and is electrically connected to the control terminal 61.

[0040] It also includes a filter screen 7, which is installed inside the drain pipe 4 and is used to filter out impurities inside after the gas is liquefied.

[0041] The condenser tube 33 is bent multiple times inside the condenser box 31 to prolong the contact time between the coolant and the gas, thereby improving the cooling efficiency; the filter screen 7 can filter out impurities in the liquid and improve the purity of the liquid.

[0042] The working process of this utility model is as follows: After the gas enters the condenser 31 from the exhaust pipe 2, the water inlet valve 34 is opened to allow the coolant to flow into the condenser 33. When the coolant flows through the condenser 33, it will take away the temperature of the gas, thereby cooling and liquefying the gas. Then the liquid will flow from the liquefaction hopper 32 into the drain pipe 4 and finally into the return tank 5.

[0043] Pressure sensor 62 monitors the pressure inside condenser 31 in real time and sends the signal to control terminal 61. When the gas pressure is too high, control terminal 61 activates alarm 63 to issue an alarm and simultaneously opens electronic valve 65 to release pressure through pressure relief pipe 64.

[0044] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0045] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0046] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A condenser for separating petroleum mixed xylene, characterized by comprising: Comprising a rectifying tower body (1); an exhaust pipe (2), one end of which is fixedly communicated with the top of the rectifying tower body (1); a condensing assembly (3), the inside of which is fixedly communicated with the end of the exhaust pipe (2) away from the rectifying tower body (1); a liquid discharge pipe (4), the top end of which is fixedly communicated with the bottom of the condensing assembly (3); a reflux tank (5), the top of which is fixedly communicated with the bottom end of the liquid discharge pipe (4); the condensing assembly (3) comprises a condensing box (31), a liquefaction hopper (32), a condensing pipe (33) and a water inlet valve (34), the side of the condensing box (31) is fixedly communicated with the end of the exhaust pipe (2) away from the rectifying tower body (1), the liquefaction hopper (32) is fixedly installed at the bottom of the condensing box (31), the condensing pipe (33) is arranged in the inside of the condensing box (31), both ends of the condensing pipe (33) are fixedly connected with the top and the side of the condensing box (31), and the water inlet valve (34) is installed at the top end of the condensing pipe (33).

2. The condenser for separating petroleum mixed xylene according to claim 1, characterized by It also comprises a monitoring assembly (6) arranged at the top of the condensing assembly (3).

3. The condenser for separating petroleum mixed xylene according to claim 2, characterized by the monitoring assembly (6) comprises a control terminal (61), a pressure sensor (62), an alarm (63), a pressure relief pipe (64) and an electronic valve (65), the control terminal (61) is fixedly installed at the top of the condensing box (31), the pressure sensor (62) is fixedly installed on the inner wall of the condensing box (31), the pressure sensor (62) is electrically connected with the control terminal (61), the bottom of the alarm (63) is fixedly connected with the top of the condensing box (31), the alarm (63) is electrically connected with the control terminal (61), the bottom end of the pressure relief pipe (64) is fixedly communicated with the top of the condensing box (31), the electronic valve (65) is fixedly installed at the middle of the pressure relief pipe (64), and the electronic valve (65) is electrically connected with the control terminal (61).

4. The condenser for separating petroleum mixed xylene according to claim 1, characterized by It also comprises a filter screen (7) installed in the inside of the liquid discharge pipe (4) for filtering impurities in the inside after gas liquefaction.

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