Formaldehyde was prepared by using semifinished methanol as raw material.This method can save energy of distillation and simplify operation,reduce cost of production and advanced econcmi creturns.

• 采用粗甲醇直接为原料生产甲醛,就可以节省精馏能耗,简化操作,降低生产成本,达到提高经济效益的目的。