21-10-2014, 02:25 PM
Abstracts: In Kanoria chemicals & industries ltd. , produced pentaerythritol & sodium formate , using of Acetaldehyde - (CH3CHO), Formaldehyde - (HCHO),Caustic soda - (NAOH),Formic acid -(HCOOH) by aldol & cannizzaro reaction. After Aldol reaction , Before cannizzaro reaction takes place , all mixture of feed materials is moving into vertical Heat exchanger. There we facing Choking problem in tube side of vertical Heat exchanger. For reducing choking problem we change the design of the heat exchanger. After cannizzaro reaction the mixture is passed to the Striping column , there we get pentaerythritol & sodium formate as bottom product , thane pentaerythritol & sodium formate is separated by electro dialysis section. We get pure pentaerythritol crystal foam by using vacuum crystallizer. But there we facing foaming problem in vacuum crystallizer. To minimize the foaming problems we used the different type Anti foaming agent. Ex. Alkyl sulfates, Alkyl ethoxylate Sulfates etc.