尼龙66连续聚合耗热量分析

Heat consumption analysis for nylon 66 continuous polymerization process

分析了五大器式尼龙66连续聚合中各单元设备的耗热量,主要是工艺热量消耗和热损失。计算表明每吨产品的工艺耗热量为3．78×106kJ／h,其中蒸发水分所消耗的热量约70％以上。提出了节能措施: 提高设备保温层的保温质量,采用热阻大的保温材料;对蒸发盐液产生的蒸汽回收利用;采用新的盐液蒸发方式,可大大降低盐蒸发的蒸汽消耗量。

The heat consumption of each unit was analyzed for nylon 66 five-reactor continuous polymerization process, primarily including process heat consumption and heat waste. The process heat consumption was 3.78× 10^6 kJ/h for one ton of products, among them the heat for water evaporation accounting for above 70%. Some measures to save energy were proposed, such as improving the quality of heat insulator, using heat insulation material with high thermal resistance, recycling the vapor produced from saline solution evaporation, adopting a new method of saline solution evaporation that can considerably reduce the heat consumption in saline solution evaporation.