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乙二醛(Clyoxal)是分子结构最简单的二元醛,市场上流通的多为30％～40％的乙二醛水溶液。乙二醛是一种用途十分广泛的有机化工产品和原料,在造纸、纺织、染料、粘合剂、医药、建筑、涂料、制革、水处理、洗涤、化妆品等方面等有广泛的用途。 工业上,乙二醛的生产方法主要有乙二醇气相氧化法和乙醛氧化法两种。国内乙二醇气相氧化法的单程收率可达到85％,与国外相当,但在后处理方面,国内一般采用离子交换、减压蒸馏和活性炭脱色的方法,所得产品中醇和甲醛的含量一般都在6％～
Glyoxal (Clyoxal) is the simplest dibasic aldehyde with the most simple molecular structure. On the market, 30% to 40% aqueous glyoxal solution is circulating. Glyoxal is a widely used organic chemical product and raw material, and has a wide range of uses in papermaking, textiles, dyes, adhesives, pharmaceuticals, construction, paint, leather, water treatment, washing, cosmetics, and so on. Industrially, glyoxal production methods mainly include gas-phase oxidation of ethylene glycol and acetaldehyde oxidation. The single-pass yield of domestic ethylene glycol gas phase oxidation method can reach 85%, which is equivalent to that of foreign countries. However, in the post-processing, domestic methods such as ion exchange, vacuum distillation, and active carbon decolorization are commonly used. The content of alcohol and formaldehyde in the obtained product is generally At 6%~