Method for separating dichloropropanol from dichloropropanol hydrochloric acid solution through alkane azeotrope agent
A technology of dichloropropanol hydrochloric acid and dichloropropanol, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry and other directions, can solve the problems of pollution, waste of resources, environment, complicated operation procedures, etc., and achieves high purity, The effect of low recovery rate and simple operation
Active Publication Date: 2019-01-04
SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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The invention discloses a method for separating dichloropropanol from a dichloropropanol hydrochloric acid solution through an alkane azeotrope agent. The method specifically comprises the following steps: adding the alkane azeotrope agent which is subjected to azeotropy with water to a dichloropropanol hydrochloric acid water solution; heating until the system reaches azeotropy; rectifying and cooling to separate a hydrochloric acid solution and the alkane azeotrope agent from a rectified component; distilling the non-rectified components under normal pressure to obtain high-purity dichloropropanol; and recycling the alkane azeotrope agent. The method is simple to operate; the complicated operation of extracting in a plurality of times is avoided; the separation efficiency is high; the cost is low; all materials can be recycled; the raw material utilization rate is high; and the environmental pollution is reduced.
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