Feeding pipeline structure from xylenol tower to intermittent tower

Abstract

The utility model discloses a feeding pipeline structure from a xylenol tower to an intermittent tower, which comprises a 3.5-xylenol tower, an intermittent tower, a 2.4-xylenol tower, a feeding pipe and a feeding pump, the 3.5-xylenol tower is connected in series with the intermittent tower and the 2.4-xylenol tower through the feeding pipe, and the feeding pump is fixedly connected at the front end of the feeding pipe. According to the utility model, the 2.4-xylenol tower and the intermittent tower are connected in series and transformed, and the intermittent tower is used for producing 3.5-xylenol, so that the yield can be prevented from being influenced, and the price drop loss caused by mixed phenol production can be reduced.

Description

Technical Field

[0001] The utility model relates to a feed pipeline structure from a xylenol tower to an intermittent tower. Background Art

[0002] During the crude phenol refining process, due to the high operating temperature of the 3,5-dimethylphenol tower and the presence of substances such as benzenesulfonic acid in the heavy components, the lower tower body of the 3,5-dimethylphenol tower was severely corroded, and leakage occurred in the reboiler inlet and outlet pipelines and tower walls.

[0003] When the 3.5-xymethylphenol tower is shut down for maintenance, mixed xymethylphenols are produced through the 2.4-xymethylphenol tower. However, the price of mixed phenols is relatively low, and the high load of the 2.4 tower will cause certain product losses and reduce the yield. Utility Model Content

[0004] The utility model aims to provide a feed pipeline structure from a xylenol tower to an intermittent tower to solve the above technical problems.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A feed pipeline structure from a xylenol tower to an intermittent tower comprises a 3.5-xylenol tower, an intermittent tower, a 2.4-xylenol tower, a feed pipe and a feed pump. The 3.5-xylenol tower is connected in series with the intermittent tower and the 2.4-xylenol tower through the feed pipe, and the feed pump is fixedly connected to the front end of the feed pipe.

[0007] Based on the above technical solution, the 3,5-dimethylphenol tower includes a tower shell, a tower top A, a reboiler, a drying pipe, and a drying fan. The tower top A is fixedly connected above the tower shell, the reboiler is fixedly connected below the tower top A, the drying pipe is fixedly connected to the tower top A and the right side of the reboiler, and the drying fan is fixedly connected below the right side of the drying pipe.

[0008] Based on the above technical solution, the 2,4-dimethylphenol tower includes a tower top B, a reaction bin, and a tower bottom. The tower top B is fixedly connected to the reaction bin below, and the tower bottom is fixedly connected to the bottom of the reaction bin.

[0009] Compared with the prior art, the utility model has the following advantages: the utility model utilizes the intermittent tower to produce 3,5-dimethylphenol by connecting the 2,4-dimethylphenol tower in series with the intermittent tower, thereby avoiding affecting the yield and reducing the price drop loss caused by producing mixed phenol. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the appearance structure of the utility model.

[0011] Figure 2 This is a schematic diagram of the structure of the 3,5-dimethylphenol tower of the utility model.

[0012] Figure 3 This is a schematic diagram of the structure of the 2.4-dimethylphenol tower of the utility model.

[0013] In the figure: 1. 3.5-xylenol tower, 2. intermittent tower, 3. 2.4-xylenol tower, 4. feed pipe, 5. feed pump, 6. tower shell, 7. tower top A, 8. reboiler, 9. drying tube, 10. drying fan, 11. tower top B, 12. reaction chamber, 13. tower kettle. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1-3 As shown, a feed pipeline structure from a xylenol tower to an intermittent tower includes a 3.5-xylenol tower 1, an intermittent tower 2, a 2.4-xylenol tower 3, a feed pipe 4, and a feed pump 5. The 3.5-xylenol tower 1 is connected in series with the intermittent tower 2 and the 2.4-xylenol tower 3 through the feed pipe 4, and the feed pump 5 is fixedly connected to the front end of the feed pipe 4.

[0016] The 3,5-dimethylphenol tower 1 includes a tower shell 6, a tower top A7, a reboiler 8, a drying pipe 9, and a drying fan 10. The tower top A7 is fixedly connected to the top of the tower shell 6, the reboiler 8 is fixedly connected to the bottom of the tower top A7, the drying pipe 9 is fixedly connected to the right side of the tower top A7 and the reboiler 8, and the drying fan 10 is fixedly connected to the bottom right side of the drying pipe 9.

[0017] The 2,4-dimethylphenol tower 3 includes a tower top B11, a reaction bin 12, and a tower bottom 13. The reaction bin 12 is fixedly connected below the tower top B11, and the tower bottom 13 is fixedly connected to the bottom of the reaction bin 12.

[0018] The working principle of the utility model is as follows: after the 3.5-tower is decommissioned, a pipeline from the 2.4-tower to the intermittent tower is newly added, the operating parameters of the intermittent tower are adjusted, and an operating mode of continuous feeding from the tower bottom, continuous extraction from the tower top, and intermittent discharge from the tower bottom is adopted. The intermittent tower is used to produce 3.5-tower xylenol, which can ensure the normal output and quality of this product.

[0019] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A feed pipeline structure from a xylenol tower to an intermittent tower, comprising a 3.5-xylenol tower (1), an intermittent tower (2), a 2.4-xylenol tower (3), a feed pipe (4), and a feed pump (5), characterized in that: The 3,5-dimethylphenol tower (1), the intermittent tower (2) and the 2,4-dimethylphenol tower (3) are connected in series via a feed pipe (4), and the feed pump (5) is fixedly connected to the front end of the feed pipe (4).

2. A feed pipeline structure from a xylenol tower to an intermittent tower according to claim 1, characterized in that: The 3,5-dimethylphenol tower (1) comprises a tower shell (6), a tower top A (7), a reboiler (8), a drying pipe (9), and a drying fan (10). The tower top A (7) is fixedly connected to the top of the tower shell (6), the reboiler (8) is fixedly connected to the bottom of the tower top A (7), the drying pipe (9) is fixedly connected to the right side of the tower top A (7) and the reboiler (8), and the drying fan (10) is fixedly connected to the bottom of the right side of the drying pipe (9).

3. A feed pipeline structure from a xylenol tower to an intermittent tower according to claim 1, characterized in that: The 2,4-dimethylphenol tower (3) comprises a tower top B (11), a reaction chamber (12), and a tower bottom (13). The reaction chamber (12) is fixedly connected below the tower top B (11), and the tower bottom (13) is fixedly connected to the bottom of the reaction chamber (12).

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