Preparation method of guanidine hydrochloride

• Main Author: FANG JIANWEN
• Format: Patent
• Language: Chinese; English
• Published: 27.04.2021
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention relates to a preparation method of a chemical product, in particular to a preparation method of guanidine hydrochloride, which comprises the following steps: a, melting, b, dissolving, c, filtering, d, dehydrating, and e, crystallizing, and the yield of the guanidine hydrochloride finished product is higher than 95%. The method has the advantages of simple reaction process, no repeated addition of raw materials, heating of the reaction kettle and subsequent purification steps, reduction of the energy consumption, reduction of the reaction time, great reduction of byproducts, and increase of the yield. 本发明涉及一种化工产品的制备方法，尤其是盐酸胍制备方法，包括下述步骤：a、熔融，b、溶解，c、过滤，d、脱水，e、结晶，盐酸胍成品产率高于95％。反应过程简单，不重复添加原料、加热反应釜以及后续的提纯步骤，同时降低能耗，减少反应时间，大大减少了副产品、提高了收率。