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Gas phase regulating unit for dividing wall column and dividing wall column comprising gas phase regulating unit

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

Active Publication Date: 2021-04-20
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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  • Gas phase regulating unit for dividing wall column and dividing wall column comprising gas phase regulating unit
  • Gas phase regulating unit for dividing wall column and dividing wall column comprising gas phase regulating unit
  • Gas phase regulating unit for dividing wall column and dividing wall column comprising gas phase regulating unit

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specific Embodiment approach

[0056]The liquid phase from the upper tray 5 or the filler is falling over the liquid plate 11 through the falling tube 6, forming a certain liquid level, and the level height exceeds the lowest position of the extracting plate 14. The liquid phase is delivered to the liquid phase distributor 9 by pump or regulating valve, and then distributed into the lower tower plate or filler. The gas phase is upward from the lower tower plate or the filler, passes through the gas phase passage 2 on the regulator 1, and then passes through the gas phase distributor 4 to the upper tower plate 5 or filler.

[0057]When there is a need to increase the air phase flow, the air phase channel 2 on the regulator 1 is larger, and the blocking of the raised cylinder 8 is shown as the regulator 1 and the floating box 3 rises. At this time, the pressure reduction is small, gas phase The opening area of ​​the channel 2 increases, and the pressure balance is increased. For this reason, it is necessary to increas...

Embodiment 1

[0063]usefigure 1 withimage 3The structure (or process) shown is carried out.

[0064]Due to the upstream raw material fluctuating, in order to satisfy the separation requirements of the semi-wall column, the gas phase flow on the left side of the partition wall needs to increase by 10%.

[0065]t0The time FIIC-101 reading is 500m3 / h, the PDC-101 number is 1000Pa; FIIC-102 reading is 500m3 / h, the PDC-102 represented is 1000Pa; the left air phase passage exceeds the boost tube 10cm, the right gas phase passage exceeds the pump 10cm.

[0066]At this time, it is necessary to slow down the flow regulator (at this time to adjust the pump), observe the left flowmeter FIIC-101 reading, when the FIF-101 number is 550m3When / h, it is maintained for 10 minutes to start the cascade control of the FIIC-101 and the PDC-101. At this time, the PDC-101 is 970Pa, and the FIIC-102 reading is 500m.3 / h, the PDC-102 is 1000Pa; the left gas phase passage exceeds the rose cylinder 10.3cm, the right gas phase p...

Embodiment 2

[0068]usefigure 1 withimage 3The structure (or process) shown is carried out.

[0069]Due to the upstream raw material fluctuations, in order to satisfy the separation requirements of the nip column, the gas phase flow on the left side of the partition wall needs to be reduced by 20%.

[0070]t0The time FIIC-101 reading is 500m3 / h, the PDC-101 number is 1000Pa; FIIC-102 reading is 500m3 / h, the PDC-102 represented is 1000Pa; the left air phase passage exceeds the boost tube 10cm, the right gas phase passage exceeds the pump 10cm.

[0071]At this time, it needs to slowly improve the flow rate of the flow regulator (at this time to adjust the pump), observe the left flowmeter FIIC-101 reading, when the FIF-101 number reaches 400m3When / h, it is maintained for 10 minutes to start the cascade control of the FIIC-101 and the PDC-101. At this time, the number of PDC-101 is 1050Pa, and the FIIC-102 reading is 500m.3 / h, the PDC-102 represented is 1000Pa; the left gas phase passage exceeds the pum...

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Abstract

The invention relates to the technical field of rectifying towers, and discloses a gas phase regulating unit for a dividing wall column and a dividing wall column containing the gas phase regulating unit, the dividing wall column contains a column wall (13), a dividing wall (12), liquid holding plates (11) and a flow regulator (7), and a gas phase regulating unit is arranged on the upper surface of at least one liquid holding plate (11), the gas phase regulating unit comprises a gas lifting cylinder (8), an adjuster (1) and a buoyancy tank (3), the gas lifting cylinder (8) is of a hollow structure, a gas phase channel (2) is arranged in the adjuster (1), the adjuster (1) is nested in the gas lifting cylinder (8), the buoyancy tank (3) is arranged outside the gas lifting cylinder (8), and the buoyancy tank (3) and the adjuster are integrally formed. According to the invention, the gas phase ratio of the pre-separation zone and the side rectification zone of the dividing wall column can be adjusted corresponding to the liquid phase ratio.

Description

Technical field[0001]The present invention relates to the field of rectification columns, and more particularly to a gas phase adjustment unit for partitioning tower and a partition tower containing a gas phase adjustment unit.Background technique[0002]The partition tower is inserted into a vertical partition wall in the ordinary distillation tower, divided into the common distillation section, the pre-separation zone, the side line distillation region, and the common transfusion segment, wherein the partition wall of the feed is said to the side For the pre-separated zone, the sidewall side of the side line is referred to as a side line distillation area.[0003]Assuming that the boiling point of A, B, and C, in an ideal state, the pre-separation zone is separated from A and C, and the material of the pre-separated zone to the public rectification section mainly contains A and B, and there is almost no C, pre-separated zone to public. The material of the distillation section mainly c...

Claims

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Application Information

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