原料质量对产品的影响-单氰胺质量变化导致苯基胍颜色发黄

The influence of raw material quality on product-The yellow color of phenylguanidine is caused by the change of mononitramine quality

摘要

苯基胍产品由原来的白色，变成现在的黄色。通过对苯基胍生产的设备设施、工艺路线、工艺控制，原辅料四个方面进行分析苯基胍产品发黄的原因。在排除工艺路线、工艺控制问题后，重点将在实验室将试剂苯胺、活性炭、单氰胺与工厂大批量采购的苯胺、活性炭、单氰胺原料生成的苯基胍做对比，识别苯基胍产品发黄的原因。通过对试验结果分析以及厂家的走访发现，原料单氰胺的产地以及生成单氰胺的原料厂家均发生了变化，导致单氰胺原料的纯度、杂质发生了变化，从而使苯基胍的产品发生质变。本文也为其他化学品生产过程中不合格产品原因分析提供了思路。

Abstract

The phenylguanidine product has changed from its original white color to the current yellow color. This study analyzes the reasons for the yellowing of phenylguanidine products by examining four aspects: production equipment and facilities, process routes, process control, and raw materials. After ruling out issues related to process routes and process control, the focus will be on comparing the phenylguanidine produced using reagents such as aniline, activated carbon, and monomethylamine in the laboratory with those produced using large-scale purchased raw materials from the factory. The analysis of experimental results and visits to manufacturers reveal that changes have occurred in both the origin of the monomethylamine raw material and the supplier of the monomethylamine, leading to variations in the purity and impurities of the monomethylamine raw material. This has resulted in a qualitative change in the phenylguanidine product. This paper also provides insights for analyzing the causes of substandard products in other chemical production processes.

关键词

苯基胍 / 单氰胺 / 发黄

Key words

phenylguanidine / monomethylamine / yellowing

参考文献

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