直硝法和双加压间硝法生产浓硝酸对比分析

Comparative Analysis to Direct Process and Dual-pressure Indirect Process for Concentrated Nitric Acid Production

浓硝酸是一种重要的化工产品和原料。综述了制造浓硝酸的直硝法和间硝法的方法,讨论了它们的工艺流程和技术特点。重点讨论了直硝法和间硝法的操作工艺参数选择对投资规模和消耗定额的影响。最后将两种方法进行了经济技术对比分析,指出双加压间硝法将是以后生产浓硝酸的主要方法。

Concentrated nitric acid is an important chemical product and raw material. The methods of producing concentrated nitric acid by Direct Process and Indirect Process are summarized and their process flow and technical characteristics are discussed here. The key discussion also includes the influence to investment scale and consumption ration resulting from the celection of operating process parameters for the Direct Process and Indirect Process. Finally the comparative analysis to the two methods in term of economy and technology and the conclusion that the dual pressure process would be the main method in the future concentrated nitric acid production are made.