染整加工的水热循环利用

Recycle and reuse of water and heat in textile wet processing

采用以源头消减、过程控制和回收利用的技术方法,改变传统被动落后的末端治理污染控制手段。即退浆机回收PVA、丝光机回收液碱、水洗机回收余热、定形机和导热油炉高温烟气余热回收利用,以及冷却水、冷凝水回收和中水回用等。改造完成后可节约蒸汽17 288 t年/,节约用水30万m3/年,节约天然气18万m3/年,水的循环利用率80%以上。

Innovative techniques of source reduction, procedure control and recycling are used to realize water and heat balance instead of the backward conventional end-of-pipe treatment of pollution, including PVA recovery in desizing machine, alkali re- covery in mercerizing machine, heat reuse in washing machine, heat reuse of high temperature exhausted gas in stenter and conduction oil furnace, and reuse of cooling, condensate and reclaimed water. With this reformation, 17 288 tons of steam, 300 thousands m3 water and 180 thousand m3 natural gas can be saved per year, recycling utilization ratio of water can reach more than 80%.