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A gas phase regulating unit for the next tower and a next tower with a gas -containing regulating unit

A technology of adjusting unit and dividing wall column, applied in the field of rectification column, can solve the problems such as difficulty in adjusting the gas phase ratio

Active Publication Date: 2022-08-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention is to solve the problem that the gas phase ratio of the pre-separation zone and the side line rectification zone in the dividing wall column is difficult to adjust

Method used

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  • A gas phase regulating unit for the next tower and a next tower with a gas -containing regulating unit
  • A gas phase regulating unit for the next tower and a next tower with a gas -containing regulating unit
  • A gas phase regulating unit for the next tower and a next tower with a gas -containing regulating unit

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0056] The liquid phase from the upper tray 5 or the packing falls on the liquid holding plate 11 through the downcomer 6 to form a certain liquid level, and the liquid level height exceeds the lowest position of the downcomer plate 14 . The liquid phase is transported to the liquid phase distributor 9 through a pump or regulating valve, and then distributed to the lower tray or packing. The gas phase rises from the lower tray or packing, passes through the gas lift cylinder 8, passes through the gas phase channel 2 on the regulator 1, and then enters the upper tray 5 or packing through the gas distributor 4.

[0057] When it is necessary to increase the gas flow rate on one side, the opening area of ​​the gas phase channel 2 on the regulator 1 is larger, and a few are blocked by the gas lift cylinder 8, which shows that the regulator 1 and the floating tank 3 rise, and the pressure drop decreases and the gas phase The opening area of ​​the channel 2 increases, and the gas flo...

Embodiment 1

[0063] use figure 1 and image 3 The structures (or processes) shown are performed.

[0064] Due to the fluctuation of upstream raw materials, in order to meet the separation requirements of the dividing wall column, the gas flow rate on the left side of the dividing wall needs to be increased by 10%.

[0065] t 0 At the moment FIC-101 reads 500m 3 / h, PDC-101 reading is 1000Pa; FIC-102 reading is 500m 3 / h, the indication of PDC-102 is 1000Pa; the left gas phase channel exceeds the gas lift cylinder by 10cm, and the right gas phase channel exceeds the gas lift cylinder by 10cm.

[0066] At this time, it is necessary to slowly reduce the flow of the flow regulator (at this time, the adjustment pump), and observe the reading of the left flowmeter FIC-101. When the FIC-101 reading reaches 550m 3 / h, maintain for 10 minutes, and start the cascade control of FIC-101 and PDC-101. At this time, the reading of PDC-101 is 970Pa, and the reading of FIC-102 is 500m 3 / h, the indi...

Embodiment 2

[0068] use figure 1 and image 3 The structures (or processes) shown are performed.

[0069] Due to the fluctuation of upstream raw materials, in order to meet the separation requirements of the dividing wall column, the gas flow rate on the left side of the dividing wall needs to be reduced by 20%.

[0070] t 0 At the moment FIC-101 reads 500m 3 / h, PDC-101 reading is 1000Pa; FIC-102 reading is 500m 3 / h, the indication of PDC-102 is 1000Pa; the left gas phase channel exceeds the gas lift cylinder by 10cm, and the right gas phase channel exceeds the gas lift cylinder by 10cm.

[0071] At this time, it is necessary to slowly increase the flow rate of the flow regulator (at this time, the adjustment pump), and observe the reading of the left flowmeter FIC-101. When the FIC-101 reading reaches 400m 3 / h, maintain for 10 minutes, and start the cascade control of FIC-101 and PDC-101. At this time, the reading of PDC-101 is 1050Pa, and the reading of FIC-102 is 500m 3 / h, th...

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Abstract

The invention relates to the technical field of rectification towers, and discloses a gas phase regulating unit for a dividing wall column and a dividing wall column containing a gas phase regulating unit. The dividing wall column contains a column wall (13), a dividing wall (12), a holding wall A liquid plate (11), a flow regulator (7), a gas-phase regulating unit is provided on the upper surface of at least one of the liquid-holding plates (11), and the gas-phase regulating unit contains a gas lift cylinder (8), a regulator (1) and a floating box (3), the air lift cylinder (8) is a hollow structure, a gas phase channel (2) is provided in the regulator (1), and the regulator (1) is nested in the air lift cylinder (8) Inside, the floating box (3) is arranged outside the air lift cylinder (8), and the floating box (3) is connected with the regulator (1) to form an integrated structure. The invention can realize that the gas phase ratio of the pre-separation zone and the side rectification zone of the partition wall column is adjusted corresponding to the liquid phase ratio.

Description

technical field [0001] The invention relates to the technical field of rectification towers, in particular to a gas phase regulating unit for a dividing wall column and a dividing wall column containing the gas phase regulating unit. Background technique [0002] The dividing wall column is to insert a vertical dividing wall into the ordinary rectifying column, and the rectifying column is divided into a common rectifying section, a pre-separation section, a side rectifying section and a common stripping section. For the pre-separation zone, the side of the separation wall drawn from the sideline is called the sideline rectification zone. [0003] Assuming that the boiling points of A, B, and C increase in turn, ideally, A and C are separated in the pre-separation zone, and the materials from the pre-separation zone to the common rectifying section mainly contain A and B and almost no C. The material in the distillation section mainly contains B and C, and almost does not c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/14B01D3/32B01D3/42
Inventor 丁晖殿李强王皓薛范
Owner CHINA PETROLEUM & CHEM CORP