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Dividing wall column and rectification column

A technology of dividing wall tower and dividing wall, which is applied in the field of separation equipment, can solve problems such as difficult adjustment of the gas phase ratio, and achieve the effects of avoiding fluctuations, improving production conditions, and improving production stability

Active Publication Date: 2021-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of dividing wall column, to solve the problem that the proportion of the gas phase that is sent to the pre-separation zone and the rectification zone of the side line is difficult to adjust

Method used

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  • Dividing wall column and rectification column
  • Dividing wall column and rectification column
  • Dividing wall column and rectification column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 2 As shown, there are 4 layers of slides in the adjustment area, each layer has a fan-shaped adjustment plate, and the angle of the center of each adjustment plate is 45°. When the four layers of adjustment plates are completely staggered, the minimum flow area is 0, and the gas phase channel is completely Blocked, no gas phase passing, no practical significance; when the 4 layers of regulating plates are overlapped and aligned, the maximum flow area is 75% of the cross-sectional area of ​​the fluid passage 11 (equal to the cross-sectional area of ​​the air riser 5).

[0050] The cross-sectional area of ​​the gas riser is 80% of the cross-sectional area of ​​the separation zone (40% of the cross-sectional area of ​​the overall dividing wall tower), so the adjustable area is 0%-60% of the cross-sectional area of ​​the dividing wall tower. Refer to the table below for specific adjustment methods:

[0051]

Embodiment 2

[0053] There are 6 layers of slideways in the adjustment area, each layer has 2 adjustment plates, and the center angle of each adjustment plate is 15°. When the adjustment plates are completely staggered, the gas phase channel is completely blocked, and no gas phase passes through, which has no practical significance; when the adjustment plates are rotated to overlap and align in two groups, the flow area of ​​the fluid channel is at most the sectional area of ​​the fluid channel 11 (the sectional area of ​​the air riser 5) 83.3%.

[0054] The cross-sectional area of ​​the gas riser 5 is 50% (25% of the cross-sectional area of ​​the next-wall tower) of the separation zone cross-sectional area, so the adjustable area is 0%-42% of the cross-sectional area of ​​the next-wall tower. Refer to the table below for specific adjustment methods:

[0055]

[0056] It can be seen from the above examples that by adjusting the flow regulating devices in the two separation zones, the ra...

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Abstract

The invention relates to separation equipment, and discloses a dividing wall tower and a rectification tower. The dividing wall tower includes a tower wall (2) and a dividing wall (1), and the dividing wall (1) separates the inner wall (2) from the dividing wall (2). The space is divided into two separation areas, and the separation area is provided with a liquid baffle (3), an air riser (5) and an adjustment area (9), and the adjustment area (9) is provided with a flow adjustment device, and the flow rate The adjusting device includes a fluid channel (11) and a plurality of fan-shaped adjusting plates (10) arranged in the fluid channel (11), and the plurality of adjusting plates (10) can be rotated to open or block the fluid channel (11). Through the above technical scheme, by adjusting the flow regulating devices of the two separation zones respectively, the flow rate of the gas phase passing through the two separation zones from bottom to top can be adjusted to realize the ratio adjustment of the gas phase flow rate and realize the reasonable distribution of the gas phase to better adapt to the Production conditions, to avoid fluctuations in the tower, improve production stability.

Description

technical field [0001] The invention relates to separation equipment, in particular to a dividing wall tower. Background technique [0002] The dividing wall column refers to the vertical partitions installed in the rectification tower, which divide the tower body into the upper public rectification section, the middle pre-separation area and the side line rectification area, and the lower public stripping section and four parts. Achieve effective separation of ternary component mixtures. [0003] The liquid from the common rectification section can be distributed to the pre-separation zone and the side line rectification zone relatively simply, and there is no specific distribution mechanism for the gas phase from the common stripping section, and it will not be deliberately distributed between the pre-separation zone and the side line rectification zone. A specific ratio is allocated among the distillation areas, which makes it very difficult to adjust the gas phase of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/14B01D3/32
CPCB01D3/143B01D3/14B01D3/32B01D3/324
Inventor 丁晖殿李强施昌智薛范
Owner CHINA PETROLEUM & CHEM CORP