概述了硝酸的生产过程和硝酸尾气的治理方法，对各种治理方法的原理进行了阐述，同时对其优缺点进行了分析和比较。通过对国内硝酸尾气的治理技术现状分析，指出针对我国老厂的NOx治理，化学吸收法具有一定优势，提出了一种尿素还原吸收-活性炭吸附联合脱硝工艺的初步技术路线。%The production process of nitric acid and treatment methods for nitric acid tail gas were reviewed, the different principles of various treatment methods for nitric acid tail gas were analyzed, and their advantages and disadvantages were compared. By analyzing the domestic present situation, it was point out that chemical absorption method had very good prospect, especially for old factories. At last, a combined technical route for denitrification process was put forward.
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