利用含硫化氢尾气一步法合成脒基硫脲的研究

Study of Synthesisizing Guanylthiourea from Tail Gas Containing H_2S by One-step Method

采用硫化氢尾气和双氰胺直接反应，一步合成脒基硫脲。考察了温度，时间等对反应的影响。反应温度80℃-82℃，反应时间1．5h，产率可达90％。

Guanylthiourea is prepared from gas tail containing HS and dicyanodiamide by one-step method. The effection temperature and reaction time on reactinn are examined. The temperature between 80℃-82℃ ,reaction time 1.5 h,The yield of guanylthiourea is 90%.