用于甲醇羰基化制醋酸的提纯方法及装置
By adjusting the feed ratio between the finished product tower and the stripping tower, the separation efficiency of the stripping tower can be precisely controlled, solving the problem of high propionic acid content in acetic acid products. This achieves efficient and environmentally friendly acetic acid purification, reduces production costs, and increases acetic acid yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING ZEHUA CHEM ENG
- Filing Date
- 2025-03-17
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing methanol carbonylation method for preparing acetic acid, the acetic acid product has a high propionic acid content, which leads to increased acetic acid production costs and makes it difficult to meet market demand for lower propionic acid content.
By adjusting the feed ratio between the product column and the stripping column, the feed rate of the stripping column can be precisely controlled, thereby improving the separation efficiency of the stripping column, reducing the reflux flow of the product column, decreasing the propionic acid content in acetic acid, and optimizing the composition of the mixed acid.
It significantly reduced the propionic acid impurity content in acetic acid products, improved the purity and yield of acetic acid products, reduced utility consumption, and enhanced production economic efficiency.
Smart Images
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