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Dividing wall rectifying tower

A divide-wall rectification tower and rectification tower technology, applied in the field of new divide-wall rectification tower, can solve problems affecting wide application, lack of design method, operation and control scheme, etc., and achieve the effect of easy operation and control

Active Publication Date: 2013-01-16
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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AI Technical Summary

Problems solved by technology

Although the dividing wall tower has the above-mentioned remarkable advantages, it has been a long time since the concept of the dividing wall tower was proposed in the 1930s to its successful industrial application, which is mainly due to the lack of reliable design methods and feasible operations. and control schemes, thus affecting its wide application

Method used

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing, divide-wall rectification column of the present invention is described in detail:

[0035] Such as figure 1 As shown, a dividing plate 11 is arranged longitudinally in the middle of the dividing wall rectification column, and the rectifying column is divided into the bottom combination zone, the tower top combination zone, the feed side of the divider wall zone and the side line output side of the divider wall zone . The liquid mid-stage reflux distribution system includes flow meters 7 and 10 , flow regulating valves 8 and 9 , mid-stage reflux buffer tank 16 , mid-stage reflux pump 17 and liquid level gauge 18 . The rising gas distribution control system at the bottom of the tower includes gas distributors 2 and 3, differential pressure gauges 5 and 6, and a computer control system 4.

[0036] After the raw material to be separated is preheated to a certain temperature, it enters the vaporization section on the feed sid...

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Abstract

The invention discloses a dividing wall rectifying tower. In the rectifying tower, a spliter plate is arranged along the vertical direction of the tower, and the inner space of the rectifying tower is divided into a tower top combination zone, a dividing wall zone charging side, a dividing wall zone delivery side and a tower bottom combination zone. The rectifying tower also comprises a liquid intermediate section reflux distribution system and a tower bottom rising gas distribution control system. The dividing wall rectifying tower can be used to flexibly adjust liquid reflux distribution ratio and gas distribution ratio at the two sides of the spliter plate of the dividing wall tower, thus achieving an ideal product separation effect.

Description

[0001] technical field [0002] The invention relates to a novel dividing wall rectification tower. [0003] Background technique [0004] Distillation technology is the most widely used unit operation in the chemical industry. Although it has many advantages, it is also a part of high energy consumption and investment in the industrial process. In chemical industry and other industries, its energy consumption accounts for the total energy consumption of the whole process. more than half. Therefore, the thermodynamic efficiency of the rectification column can be improved by designing a new column structure to reduce energy consumption. The most representative one is the dividing wall column, which refers to setting a vertical partition inside the rectification tower to divide the rectification tower into the top section, the bottom section, the feed section and the middle side line separated by the partition There are four main parts in the product extraction section. Ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01D3/42
Inventor 高景山齐慧敏杨秀娜廖昌建李经纬
Owner CHINA PETROLEUM & CHEM CORP
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