描述
酒精又称乙醇,在我国有几千年的生产历史。当今,乙醇已成为一种重要的基础化工原料,可用于合成乙醛、乙醚、醋酸乙酯等的基本有机原料,是制造农药、医药、橡胶、塑料、人造纤维、洗涤剂和香水等的原料。乙醇又是一种重要的溶剂,大量应用于油漆、医药、染料、油脂等工业部门。当然,它还是配制饮用酒和医药上的杀菌剂的原料。
乙醇的工业生产方法主要有两类,即以糖类、淀粉和水解纤维素等碳水化合物为原料的发酵法和以乙烯为原料的水合法。发酵法是一种较老的生产方法,但在我国仍是乙醇生产的主要方法。现以淀粉原料为例,将原料粉碎后加水蒸煮糊化得糊精,再加入霉菌的培养物——糖化剂使糊精转化为糖。再加入酒精酵母,利用酵母产生的各种酶(主要是酒化酶),在30℃左右和无氧的条件下把糖转化为酒精和二氧化碳。
产品广泛应用于:电力、石油、矿井提升、港口、供热、燃气、供水、污水处理、冶金、造纸、纺织、化工、水利等现代化工业领域!
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