甘蔗糖厂汽凝水除糖新工艺研究

New Technique of Sugar-removing from the Condensate in Sugarcane Mills

关键词:  汽凝水  反渗透  (火用)分析  甘蔗糖厂

Key words:  condensate  reverse osmosis  exergy analysis  sugarcane mills

摘要:

为了解决甘蔗糖厂二效汽凝水除糖不稳定、不彻底的问题,采用新的工艺方法即反渗透技术对二效汽凝水进行深度处理后作为锅炉补给用水的实验研究。实验结果表明:反渗透系统脱盐率能够稳定在87.28%左右,含糖量低于10mg·L^-1,出水水质稳定,完全达到中压锅炉补充给水水质标准。该工艺在经济上可行且经济效益显著。

Abstract:

In order to solve the problem that the sugar can not be removed stably and completely from the second effect condensate in sugarcane mills, the paper puts forward a new technique, namely reverse osmosis. The condensate of evaporator with the second effect has been treated carefully by reverse osmosis treatment technology, and has been applied to boiler water recycling. The results show that after the treatment, the conductivity removal rate of reverse osmosis system is stabilized about 87.28%, the sugar content is lower than 10 mg·L^-1 and the effluent water quality is stable. The effluent water quality has completely reached the standards of the medium pressure boiler supply water. Exergy analysis reveals that the technique is not only feasible in economy but also has good economic profit.