A tower top temperature cascade control device for a bromoalkane rectifying tower

Abstract

The utility model discloses a kind of tower top temperature cascade control devices for bromoalkane rectifying column, including rectifying column, the top of the rectifying column is close to the edge of one side and is provided with temperature table, the top center of the rectifying column is connected with gas pipeline, the outer surface of the one side of gas pipeline is close to the edge of bottom and is connected with short pipe along horizontal direction.This utility model, by adopting the mode of circulating water, when the gas generated by bromoalkane is condensed, circulating water can better condense water by flowing through condenser, so that the refrigeration effect of condenser can be better to achieve optimum, when tower top temperature is too high or too low, by adjusting one of gas valve, reflux valve, water inlet valve and backwater valve, the temperature of rectifying column tower top can be controlled, so that cascade control can be better realized, and the tower top temperature of rectifying column can be better controlled.

Description

Technical Field

[0001] This utility model relates to the field of brominated alkane distillation column technology, and in particular to a cascade control device for the top temperature of a brominated alkane distillation column. Background Technology

[0002] A brominated alkane distillation column is a device for distilling brominated alkanes. It can better distill brominated alkanes, thereby achieving gas-liquid separation and improving the purity of the product.

[0003] In existing brominated alkane distillation columns, the temperature at the top of the column is controlled by a condenser and circulating water. Because this control method uses parallel connections, it's impossible to regulate the top temperature of the distillation column by adjusting a single device. This significantly increases the workload for operators. Furthermore, controlling the top temperature through multiple devices leads to extreme temperature instability, resulting in products that fail to meet purity requirements and increasing production costs. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cascade control device for the top temperature of a brominated alkane distillation column.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cascade temperature control device for the top of a brominated alkane distillation column, comprising a distillation column, a thermometer installed near one edge of the top of the distillation column, a gas pipeline connected to the center of the top of the distillation column, a short pipe connected horizontally along one side of the outer surface of the gas pipeline near the bottom edge, a pressure gauge installed near one end edge of the top of the short pipe, a shut-off valve installed on the side of the top of the short pipe near the pressure gauge, a gas valve installed at the center of the top of the gas pipeline, a condenser connected to one end of the gas pipeline, a reflux pipe connected to the center of the bottom of the condenser, and a reflux valve installed at the center of the top of the reflux pipe.

[0006] As a further description of the above technical solution:

[0007] A circulating water inlet pipe is connected to the center of one side of the outer surface of the condenser.

[0008] As a further description of the above technical solution:

[0009] An inlet valve is provided at the center of the outer surface of one side of the circulating water inlet pipe.

[0010] As a further description of the above technical solution:

[0011] A circulating water return pipe is connected to the center of the outer surface of the other side of the condenser.

[0012] As a further description of the above technical solution:

[0013] A return water valve is provided on one side of the outer surface of the circulating return water pipe near one edge.

[0014] As a further description of the above technical solution:

[0015] One end of the circulating water inlet pipe is connected to a circulating pump, and a water tank is fixed to the bottom of the circulating pump.

[0016] As a further description of the above technical solution:

[0017] The bottom end of the circulating water return pipe extends into the interior of the water tank.

[0018] As a further description of the above technical solution:

[0019] A water pipe is connected to the center of the bottom of the circulating pump, and the bottom end of the water pipe extends into the interior of the water tank.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] 1. In this utility model, by adopting cascade control, the temperature at the top of the distillation column can be better controlled by adjusting a single device, thereby making the temperature control more stable, so that the manufactured product can achieve better purity and improve the production yield.

[0022] 2. In this utility model, by using circulating water, when condensing the gas produced by bromoalkane, the circulating water flowing through the condenser can better condense the water, thereby achieving the best cooling effect of the condenser. When the temperature at the top of the column is too high or too low, the temperature at the top of the distillation column can be controlled by adjusting one of the gas valve, reflux valve, inlet valve, and return valve, thereby achieving better cascade control and better control of the top temperature of the distillation column. Attached Figure Description

[0023] Figure 1 This is a front view of the top section of a distillation column for a cascade temperature control device for a brominated alkane distillation column proposed in this utility model.

[0024] Figure 2 This is a front view of the condenser portion of a cascade temperature control device for the top temperature of a brominated alkane distillation column proposed in this utility model.

[0025] Figure 3This is a front view of the water tank portion of a cascade temperature control device for the top temperature of a brominated alkane distillation column proposed in this utility model.

[0026] In the diagram: 1. Distillation column; 2. Thermometer; 3. Gas pipeline; 4. Shut-off valve; 5. Short pipe; 6. Pressure gauge; 7. Gas valve; 8. Condenser; 9. Reflux valve; 10. Reflux pipe; 11. Circulating water inlet pipe; 12. Water inlet valve; 13. Circulating pump; 14. Water tank; 15. Return water valve; 16. Circulating return water pipe; 17. Water pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1-3 This utility model provides an embodiment of a cascade temperature control device for the top of a brominated alkane distillation column, comprising a distillation column 1, a thermometer 2 installed near one edge of the top of the distillation column 1, a gas pipe 3 connected to the center of the top of the distillation column 1, a short pipe 5 horizontally connected to one side of the outer surface of the gas pipe 3 near the bottom edge, a pressure gauge 6 installed near one end edge of the top of the short pipe 5, a shut-off valve 4 installed on the side of the top of the short pipe 5 near the pressure gauge 6, a gas valve 7 installed at the center of the top of the gas pipe 3, a condenser 8 connected to one end of the gas pipe 3, a reflux pipe 10 connected to the center of the bottom of the condenser 8, and a reflux valve 9 installed at the center of the top of the reflux pipe 10. The cascade control allows for better control of the temperature at the top of the distillation column 1. Adjusting a device controls the temperature at the top of distillation column 1, thereby achieving greater temperature stability and ensuring higher purity of the produced product, thus improving production yield. By using circulating water, the condenser 8 effectively condenses the water during the condensation of the bromoalkane gas, optimizing its cooling effect. When the top temperature is too high or too low, adjusting one of the following valves—gas valve 7, reflux valve 9, inlet valve 12, or return valve 15—allows for better control of the top temperature of distillation column 1, enabling cascade control and improved temperature management.

[0029] A circulating water inlet pipe 11 is connected to the center of one side of the outer surface of the condenser 8. A water inlet valve 12 is installed at the center of one side of the outer surface of the circulating water inlet pipe 11. A circulating water return pipe 16 is connected to the center of the other side of the outer surface of the condenser 8. A return water valve 15 is installed near one end of the outer surface of one side of the circulating water return pipe 16. A circulating pump 13 is connected to one end of the circulating water inlet pipe 11. The circulating pump 13 is a 380-volt chemical pump. A water tank 14 is fixed to the bottom of the circulating pump 13. The bottom end of the circulating water return pipe 16 extends into the interior of the water tank 14. A water pipe 17 is connected to the center of the bottom of the circulating pump 13. The bottom end of the water pipe 17 extends into the interior of the water tank 14.

[0030] Working principle: When distilling bromoalkane, in order to control the temperature of the distillation process, the condenser 8 can be adjusted by regulating one of the following valves: gas valve 7, reflux valve 9, water inlet valve 12, and water return valve 15. This allows for better control of the top temperature of the distillation column 1, facilitating temperature control of the bromoalkane distillation and resulting in a higher purity of the manufactured product.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 device for overhead temperature cascade control of a bromoalkane rectification column, comprising a rectification column (1), characterized in that: A thermometer (2) is installed at the top of the distillation column (1) near one edge. A gas pipe (3) is connected to the center of the top of the distillation column (1). A short pipe (5) is connected horizontally to the outer surface of one side of the gas pipe (3) near the bottom edge. A pressure gauge (6) is installed at the top of the short pipe (5) near one edge. A shut-off valve (4) is installed on the side of the top of the short pipe (5) near the pressure gauge (6). A gas valve (7) is installed at the center of the top of the gas pipe (3). A condenser (8) is connected to one end of the gas pipe (3). A reflux pipe (10) is connected to the center of the bottom of the condenser (8). A reflux valve (9) is installed at the center of the top of the reflux pipe (10).

2. A top temperature cascade control device for a bromoalkane rectification column according to claim 1, characterized in that: A circulating water inlet pipe (11) is connected to the center of one side of the outer surface of the condenser (8).

3. A top temperature cascade control device for a bromoalkane rectification column according to claim 2, characterized in that: A water inlet valve (12) is provided at the center of the outer surface of one side of the circulating water inlet pipe (11).

4. The overhead temperature cascade control apparatus for a bromoalkane rectification column according to claim 1, characterized by: A circulating water return pipe (16) is connected to the center of the outer surface of the other side of the condenser (8).

5. A top temperature cascade control device for a bromoalkane rectification column according to claim 4, characterized in that: A return valve (15) is provided on one side of the outer surface of the circulating return water pipe (16) near one end edge.

6. A top temperature cascade control device for a bromoalkane rectification column according to claim 3, characterized in that: One end of the circulating water inlet pipe (11) is connected to a circulating pump (13), and a water tank (14) is fixed at the bottom of the circulating pump (13).

7. The cascade temperature control device for the top of a brominated alkane distillation column according to claim 4, characterized in that: The bottom end of the circulating return water pipe (16) extends into the interior of the water tank (14).

8. The cascade temperature control device for the top of a brominated alkane distillation column according to claim 6, characterized in that: The bottom center of the circulating pump (13) is connected to a water pipe (17), and the bottom end of the water pipe (17) extends into the interior of the water tank (14).

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