从技术专利角度介绍了直接法制备HCN主要工艺路线的研究成果,并从HCN工艺路线的技术特点、安全性、经济性等方面进行了初步对比分析.%This paper introduces the research results of the main technical routes of HCN from the perspective of technology patents, and makes a preliminary comparative analysis from the technical characteristics, safety, economy and other aspects of the HCN process route.
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