工业用蒸汽节能降耗装置

日期： 2022-09-26 作者：晟德亿编辑

很多用户的蒸汽管网都是在逐年不断扩建的过程中形成的，管道也是不断增加和连接的，所以往往会出现很多复杂的问题，有时无法考虑周全，只能“两害相权取其轻”。

蒸汽输送的关键是减少“泄漏”和保证蒸汽品质。在实际生产中，很多企业忽视了蒸汽品质的保证，因为很难准确预测和控制管道中蒸汽的状态，很难达到蒸汽消耗点的实际压力和饱和度。

蒸汽输送管网的有效节能措施如下：
1、确保蒸汽管道的流量：
由于管道内蒸汽流量过高，蒸汽压降会增大，用汽点的蒸汽品质也会相应降低，终会消耗更多的蒸汽。相反，如果管内流速过低，凝结速度会加快，热损失也会增加。
解决方法：根据实际工况的工艺要求严格计算蒸汽流量，然后根据压力、流量、流速等参数计算出相应的管径，并选择匹配的阀门，或者直接根据下表选择管道。
2、尽量减少蒸汽管道的散热；
所有蒸汽管表面、法兰、阀门等。应该绝缘以减少辐射损失。
另外，如果不是很有必要，主管道尽量用大主管道向车间输送蒸汽，不要过早的分成几个小管道，因为大管道散热面积更小，散热更少，所以尽量用大管道输送蒸汽。
比如，在相同压力下，1根DN150蒸汽管的输送能力和4根DN80管差不多，但4根DN80管的散热损失是DN150管的2.5倍。
3、排水干管的正确设计：
A.蒸汽总管沿管长平均每隔30-50m设置疏水点；管道的低点、转弯处和末端也应设置疏水点；
B.如果排水点或管道设计错误，冷凝水不能及时排出，会造成严重的水锤冲击，损坏阀门、管道、弯头、设备等。，并降低后续换热器的换热效率。

c、主排水管，需要在管道上做一个集水井，然后连接小口径的排水管道，让冷凝水顺利落入集水井，再通过疏水阀排出。否则如果没有集水井，很多时候冷凝水降不下来，会继续被蒸汽直接推开，造成后端蒸汽湿度大，水锤等问题。

更多蒸汽系统节能知识可关注“晟德亿蒸汽节能”！

上一篇：蒸汽系统冷凝水余热回收改造方案下一篇：蒸汽排空气阀在工业蒸汽系统中有哪些作用？

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热门标签更多

蒸汽排气阀蒸汽发生器选购注意事项密闭冷凝水回收装置减温减压装置工业蒸汽系统在蒸汽换热后存在高温冷凝水、低品质蒸汽、乏汽等余热未回收的问题闪蒸罐汽水分离器蒸汽发生器热泵化工、石化、食品等企业换热设备产生的高温冷凝水闪蒸系统再返回用汽设备进行换热生产。

二、在锅炉连排废水后端安装焓差补偿式扩容净化蒸汽调节阀彻底解决了锅炉连排损失问题。

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