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Controlled Splitting of Liquid Reflux in Dividing Wall Columns

A technology of dividing wall column and liquid reflux, applied in distillation regulation/control, separation/purification of carbonyl compounds, fractional distillation, etc., can solve problems such as increasing cost

Active Publication Date: 2022-06-21
UOP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excess acetone in the net side draw aqueous stream and net side draw organic stream would require additional treatment to remove the excess acetone and / or loss of acetone and / or increase the cost of disposal or further processing of the stream containing the excess acetone

Method used

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  • Controlled Splitting of Liquid Reflux in Dividing Wall Columns
  • Controlled Splitting of Liquid Reflux in Dividing Wall Columns

Examples

Experimental program
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no. 1 approach

[0033] The first embodiment is a process comprising a divided wall column 10 having a feed side 14 and a product side 16, wherein the feed side includes an inlet for feed stream 12, and wherein the product side includes an inlet for liquid Product line outlet for side draw stream 18; wherein liquid reflux stream 27 from first active distillation tray 26 above dividing wall 20 forms or may form two liquid phases, wherein the two liquid phases of the reflux stream pass through any Means separation, wherein the reflux stream 29 comprising mainly the aqueous phase is directed integrally to the product side of the dividing wall, and the reflux stream 32 comprising mainly the organic phase is split into streams 34 and 36, wherein the stream 34 is directed as reflux to the product side, and stream 36 is directed as reflux to the feed side, wherein for the split phase streams, the flow distributed to the product side relative to the feed side is controlled.

[0034] A second embodimen...

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Abstract

The present invention relates to fractional distillation techniques for producing purified phenol and acetone products. More specifically, the present invention relates to fractional distillation techniques for the production of crude acetone and crude phenol streams using a dividing wall column designed to remove cumene, alpha-methylstyrene and water.

Description

[0001] claim of priority [0002] This application claims priority to US Application No. 16 / 368,310, filed March 28, 2019, which in turn claims priority to US Provisional Application No. 62 / 650,170, filed March 29, 2018, which is incorporated in its entirety. into this article. technical field [0003] The present invention relates to fractional distillation techniques for producing purified phenol products. More specifically, the present invention relates to fractional distillation techniques for producing crude acetone and crude phenol streams using a dividing wall column designed to remove cumene, alpha-methylstyrene and cumene from the product side of the wall. water. Background technique [0004] Phenol is produced via air oxidation of cumene to cumene hydrogen peroxide (CHP), followed by acid-catalyzed cleavage of the latter to phenol and acetone, and is referred to as CHP decomposition. The decomposition of CHP is a very exothermic reaction, which is usually carrie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/14C07C45/82C07C39/04
CPCC07C37/74B01D3/141B01D3/42B01D3/4233C07C39/04C07C37/52B01D2257/7027
Inventor 拉塞尔·C·舒尔茨查德·A·威廉姆斯詹姆斯·W·哈里斯尼康吉·马努拜·帕特尔
Owner UOP LLC
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