Divided Wall Column Concept

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11/24/13 Sumiju Plant Engineering Co., Ltd. - Equipment for Distillation and Extraction

www.spe.shi.co.jp/en/distill1.html

Comparative Example of Initial/Running Costs Between Conventional 2-Column System

and Divided Wall Column regarding the Actual High-Purity Ethyl Acetate Producing

Installation*

* • Amount o f feed: 2,200kg/h • Product purity: 99.99wt% • Column diameter: 1,100mm •

 Number of theoretical stages: 50

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11/24/13 Sumiju Plant Engineering Co., Ltd. - Equipment for Distillation and Extraction

www.spe.shi.co.jp/en/distill1.html

Divided Wall Column Delivery Record

 Number of installations 21

Column diameter  150A (min.) - ID 3,600mm (max.)

Column height 5,300mm (min.) - 40,000mm (max.)

 Number of theoretical stages 20 (min.) - 65 (max.)

Operating pressure normal pressure - vacuum (0.4kPa)

Operating temperature 80ºC-250ºC *temperature at the bot tom of the column

Process  petro chemist ry, oleochemistry, fatty series

Pilot Test

Actual liquid tes ts using the pilot test equipment can be conducted to confirm applicability of 

the Divided Wall Column and reliability of scaling up to actual industrial installations.

Overview of Test Installation Specifications

Method operational method of continuous distillation

Distillation tower 

specifications

150A x SFLOW® "700G" (specific surface area: 700m2/m3)

 Number of theoretical stages (9 theoretical stages ) x 4BED (equivalent to

a total of 36 theoretical stages) wetted part: SUS316

Operating

 pressure1.33kPaA - normal pressure operation

Heat source heat ing medium oil

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