斯那姆氨汽提尿素装置蒸汽冷凝液系统改造

REVAMPING OF STEAM CONDENSATE SYSTEM OF SNAM AMMONIA STRIPPING UREA PLANT

尿素装置和三聚氰胺系统联运后,三聚氰胺返回尿素的工艺碳铵液造成尿素系统水碳比增高,尿素转化率下降,中、低压系统负荷增加,蒸汽冷凝液系统超温超压。针对存在问题对尿素蒸汽冷凝液系统进行改造,改造后实现了效益的最大化。

After urea plant and melamine system are put into joint operation, the melamine process ammonium carbonate recycled to urea increased water/carbon ratio of urea system, resulting in the decrease of urea conversion, load increases of medium and low pressure systems, as well as temperature and pressure exceeding of steam condensate system. Aimed at the existed problem, urea steam condensate system was revamped. After the revamp, the profits are optimized.