Control of Styrene Decolorization in Styrene Extraction Equipment
The crude styrene obtained from cracking gasoline extraction is yellow in color,and two decolorization methods of nitric acid and organic acid are mainly used in industry.Nitric acid decolorization utilizes the oxidation reaction between nitric acid and the coloring substance in crude styrene,and then achieves the decolorization of crude styrene through alkali neutralization,water washing and distillation.The chromaticity of styrene directly affects the grading of refined styrene.The mixer is the main site for the decolorization of crude styrene in the styrene extraction device.In order to achieve the required decolorization effect of crude styrene,effective control is needed from the aspects of the concentration of decolorizing agent nitric acid,decolorization temperature,and operation of the decolorization site.In this article,several aspects affecting the decolorization of crude styrene were analyzed,and explained,certain operational suggestions were put forward for controlling several aspects affecting the decolorization effect of styrene extraction equipment.
NETL
NSTL
万方数据
维普
