Title:
How to remove dioxane from a constituent
Document Type and Number:
Japanese Patent JP5909030
Kind Code:
B2
Abstract:
Apparatus and processes for removing dioxane from a composition, e.g., an ethoxylated fatty alcohol sulfate paste, utilize an evaporator having an inlet chamber and one or more heated channels. The process includes the step of heating the composition at a location upstream of the flow restriction to a temperature above the flashing temperature of water at a pressure of the channel inlet and applying a pressure to the heated composition to avoid such flashing. The process further includes the step of passing the pressurized, heated composition through the evaporator. The process can further include injecting a vapor into the channel. The purified, concentrated product can be diluted with water to a desired concentration.
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Inventors:
Walter A. Jessup
Burton Brooks
W-Blood Sheets
Burton Brooks
W-Blood Sheets
Application Number:
JP2015535871A
Publication Date:
April 26, 2016
Filing Date:
October 07, 2013
Export Citation:
Assignee:
The Chemison Corporation
International Classes:
C11D1/29; B01D1/22; C07C303/44; C07C305/10; C11D11/00
Foreign References:
| WO2005087909A1 | ||||
| WO2002081381A1 | ||||
| WO1995014660A1 | ||||
| US5723433 | ||||
| US4285881 | ||||
| EP0645445A1 | ||||
| DE3343802A1 |
Attorney, Agent or Firm:
Axis International Patent Business Corporation