摘要：

研究了水下加热方式、雾化喷嘴数量及给水含氧质量浓度对除氧器除氧性能的影响规律。对于所研究的除氧方式，试验结果表明：在一定给水流量和给水过冷度下，除氧器均能在初步除氧阶段将给水加热至饱和状态，说明该除氧器对给水的加热性能良好；给水流量为13.5 t/h时，单喷嘴雾化除氧效果略优于4喷嘴雾化除氧效果；当分别以蒸汽、热水作为除氧热源时，一定给水含氧质量浓度下，热水加热除氧效果优于蒸汽加热除氧效果。

关键词: 热力除氧, 除氧性能, 喷嘴, 水下加热

Abstract:

The influences of underwater heating modes, the number of spray nozzles and mass concentration of feed-water containing oxygen on the deoxidizing performance of the deaerator are studied.According to the studied deoxidization mode, the experimental results show that the feed water can be heated to saturated state in the preli-minary deoxidizing stage, at definite flow rate and super-cooling degree.It indicates that the heating capacity of the deaerator for feed water is good.When the feed water flow rate is 13.5 t/h, the deoxidizing performance of the single nozzle pulverization is a little higher than that of the one with four nozzles.When steam and hot water are used as deoxidizing heat sources, with definite mass concentration of feed water containing oxygen, the deoxidizing effect of the deaerator heated by hot water is better than that of the deaerator heated by steam.

Key words: thermal deaerator, deoxidizing performance, nozzle, underwater heating

中图分类号: 

• X703.1