活性污泥作为气化用型煤粘结剂的研究 Ⅰ.污泥添加量和型煤成型条件的考察

Active sludge as coherent agent for briquette of gasification in ammonia synthesis Effect of sewage sludge additive level and modeling condition on quality of briquette

以活性污泥（以下简称为污泥）为研究对象，以合成氨厂广泛使用的白泥型煤为参照，进行了气化用型煤粘结剂的研究．结果表明，当污泥添加量为２％（干基）白泥添加量为０３％（干基）时，所制得的型煤抗压强度、跌落强度、热稳定性与白泥型煤相当．研究表明，成型压力３０ＭＰａ，烘干温度１５０℃和烘干时间２ｈ是制污泥型煤的合适工艺条件．

The cohesiveness of active sludge with coal powder was studied in order to use it as briquette which is raw material of gasification in ammonia synthesis.Briquette with white earth was taken as a reference.The results indicated that coincident beaten strength,falling strenngth annd thermal stability of the sewage sludge briquette made of 2%(dry basis)sewage sludge,0.3% white earth,and coal powered equivalent to those of white earth briquette.Modeling pressure of 30MPa,Drying temperature of 150℃ and drying time of 2h were suitable conditions for production of sewage sludge briquette.