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河北桃园农药有限公司采用自己开发的氰化钠法新工艺建成了年产200吨(100%有效成分)百草枯中试装置。近日,该新工艺和中试装置通过了由河北省科委组织的鉴定。该公司采用氯甲烷与吡啶成盐、氰化钠催化偶联和氧化三步合成百草枯新工艺,与金属钠法相比,工艺简单,易于操作,生产工艺安全。经检测,产品纯度高,收率高,达到同类产品国际先进水平。废水经处理后,可达到排放标准,该工艺投资少,成本低。为满足应用需要,专家建议尽快投入生产。
Hebei Taoyuan Pesticide Co., Ltd. has established a paraquat pilot plant with an annual output of 200 tons (100% active ingredient) using its own sodium cyanide process. Recently, the new process and pilot plant passed the appraisal organized by the Hebei Provincial Science and Technology Commission. The company uses parachloromethane and pyridine salt, sodium cyanide catalyzed coupling and oxidation of three new synthetic paraquat process, compared with the metal sodium method, the process is simple, easy to operate, production process safety. After testing, the product has high purity and high yield, reaching the international advanced level of similar products. After the waste water is treated, it can meet the emission standards. The process has low investment and low cost. In order to meet the application needs, experts recommend that they be put into production as soon as possible.