Method for preparing ultra high-purity alcohol compound

Abstract

The invention discloses a method using adsorption to remove microscale metallic cation and non-metallic anion in alcohol compound, adopting surface oxidation active carbon that is disposed by oxidant as adsorbent, getting ultra-pure alcohol compound after contact adsorpting alcohol compound and surface oxidation active carbon, the mentioned alcohol compound is liquefied alcohol compound in common temperature and pressure. This method is easy to operate, convenience, safe and clean to prepare, compared with resinous exchange method, the treatment effect is homologous to resinous exchange method, the purity velocity and efficiency are higher than resinous exchange method, the dried surface oxidation active carbon would not bring new moisture for alcohol compound.

Description

technical field [0001] The invention relates to a method for purifying alcoholic compounds, in particular to a method for removing trace metal cations and non-metallic anions in alcoholic compounds by an adsorption method. Background technique [0002] High-purity alcohol compounds are miscible with water, have a low boiling point, and are volatile. They are cleaning agents used on a large scale in the production process of integrated circuits, wafers, printed circuit boards, and precision components. High-purity alcohol compounds mainly include low-carbon chain alcohols such as methanol, ethanol, and isopropanol. The global annual demand is hundreds of thousands of tons, and the domestic market also has a scale of tens of thousands of tons. [0003] At present, the commonly used purification techniques for preparing ultra-clean and high-purity reagents at home and abroad mainly include rectification, distillation, sub-boiling distillation, isothermal distillation, vacuum di...

AI Technical Summary

Problems solved by technology

For example, using absolute ethanol with a water content of 0.05% to treat the undried gel-type anion-cation exchange resin with a moisture content of 5%, the gel-type anion-cation exchange resin that has been dried at 80°C for 2 hours is treated The moisture content of the final product reaches 2%, and the product treated with the gel-type anion exchange resin after drying at 100°C for 2 hours still has 0.5% moisture, and as the resin dries, the exchange effect of the resin will decline rapidly , adversely affect production efficiency

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