CN201848112U - Rectifying tower for methyl carbonate production - Google Patents

Abstract

The utility model belongs to the field of chemical engineering devices and particularly relates to a rectifying tower for methyl carbonate production, comprising filler layers and liquid collecting tanks arranged on the inner wall of the tower body. The rectifying tower is characterized in that a material inlet pipe is arranged on the tower wall between the first filler layer and the second filler layer which are arranged on the rectifying tower from bottom to top; a material outlet pipe is arranged at the bottom of the liquid collecting tank between the second filler layer and the third filler layer which are arranged on the rectifying tower from bottom to top; and a material outlet pipe is arranged at the bottom of the liquid collecting tank between the third filler layer and the fourth filler layer which are arranged on the rectifying tower from bottom to top. By adopting a continuous methyl carbonate feeding device, the material feeding process is stabilized, the energy consumption is decreased, the cost is reduced and the large-scale and continuous production of methyl carbonate is realized.

Description

Distillation tower for dimethyl carbonate production

technical field

The utility model belongs to the field of chemical equipment, in particular to a rectification tower for dimethyl carbonate production.

Background technique

At present, the rectification process of dimethyl carbonate is batch production. The material is fed through the rectification tower, distilled, refluxed, and then discharged. Due to the extremely unstable discharge of this intermittent method, high energy consumption, high cost, and limited production scale, it is impossible to realize large-scale continuous production of dimethyl carbonate. Therefore need to design a kind of rectification column for the production of dimethyl carbonate that can improve the stability of feed, save production cost, realize material continuous feed and discharge.

Contents of the invention

In order to solve the above problems, the utility model provides a dimethyl carbonate rectifying tower that can realize continuous feeding.

The rectification tower for dimethyl carbonate production of the present utility model comprises a packing layer and a liquid accumulation tank located on the inner wall of the tower, and is characterized in that: the first packing layer and the second packing layer from bottom to top in the rectification tower There is a feed pipe on the tower wall between them; there is a discharge pipe at the bottom of the liquid accumulation tank between the second packing layer and the third packing layer from bottom to top in the rectification tower; There is a discharge pipe at the bottom of the liquid accumulation tank between the third packing layer and the fourth packing layer.

One end of the above-mentioned feed pipe located in the tower body is fixedly connected with an elbow, and the other end of the elbow is fixedly connected with a pipeline, the direction of the pipeline is downward, and the elbow is located in the center of the rectifying tower.

The beneficial effect of the utility model is that after adopting the above-mentioned dimethyl carbonate continuous feeding device, the feeding process is stabilized, the energy consumption is reduced, the cost is reduced, and the large-scale continuous production of dimethyl carbonate is realized .

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1-fluid tank, 2-rectification tower, 3-packing layer, 4-feed pipe, 5-discharge pipe, 6-elbow, 7-pipeline.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

The rectifying tower 2 used for the production of dimethyl carbonate of the present utility model comprises a packing layer 3 and a liquid accumulation tank 1 positioned on the inner wall of the rectifying tower 2, and is characterized in that: the first filler in the rectifying tower 2 from bottom to top A feed pipe 4 is arranged on the tower wall between layer 3 and the second packing layer 3; there is A discharge pipe 5; there is a discharge pipe 5 at the bottom of the liquid accumulation tank 1 between the third packing layer 3 and the fourth packing layer 3 in the rectification tower 2 from bottom to top.

One end of the above-mentioned feed pipe 5 located in the tower body is fixedly connected with an elbow 6 , and the other end of the elbow 6 is fixedly connected with a pipeline 7 .

After the material enters the rectification tower 2 through the feed pipe 4, it is rectified and refluxed in the rectification tower 2, and the rectified material is discharged through the discharge pipe 5 to realize simultaneous feeding and discharge.

Claims (3)

1. dimethyl carbonate production rectifying column comprises packing layer and is positioned at hydrops groove on the tower body inwall, it is characterized in that: rectifying column from bottom to top first packing layer and the tower wall between second packing layer on feed pipe is arranged; Rectifying column from bottom to top the hydrops trench bottom between second packing layer and the 3rd layer of packing layer discharge nozzle is arranged; Rectifying column from bottom to top the hydrops trench bottom between the 3rd packing layer and the 4th layer of packing layer discharge nozzle is arranged.

2. a kind of dimethyl carbonate production rectifying column as claimed in claim 1, it is characterized in that: the end that this feed pipe is positioned at tower body is fixedly connected with elbow, and the other end of elbow is fixedly connected with pipeline, and duct orientation is downward.

3. a kind of dimethyl carbonate production rectifying column as claimed in claim 1, it is characterized in that: described elbow is positioned at the center of rectifying column.

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