低压乏汽如何增压？

日期： 2022-06-28 作者：晟德亿编辑

蒸汽的输送和使用都是重高压到低压阶梯式下降的，这也符合用能的原则。蒸汽在管道末端时其压力、温度到不到生产要求被称为乏汽。乏汽没有用途，如何利用这部分乏汽呢？

现有的设备有压缩机和热泵引射器两种，压缩机使乏汽压缩消耗电能较大，采用的比较少。现在使用热泵引射器增压较为广泛，热能损失少。蒸汽增压改造可以单独使用热泵引射器或者配合冷凝水密闭回收闪蒸系统使用。

蒸汽增压器现在用的最多的是蒸汽喷射泵：或称蒸汽热泵、喷射器、射流泵、热泵引射器。技术原理：利用高压工作流体的喷射作用来输送流体的泵。由喷嘴、混合室和扩大管等构成。为了使两种流体能够充分混合，在真空室后面有一混合室。操作时，工作流体以很高的速度由喷嘴喷出，在真空室形成低压，使被输送液体吸入真空室，然后进入混合室。在混合室中高能量的工作流体和低能量的被输送液体充分混合，使能量相互交换，速度也逐渐一致，从喉管进入扩散室，速度放慢，静压力回升，达到输送蒸汽的目的。

用汽管道或者设备末端的低品质蒸汽（又称为乏汽）因为自身温度、压力无法满足生产需求从而进行增压改造，可以根据主管道蒸汽参数和用汽管道蒸汽参数，设计生产热泵引射器使低品质蒸汽通过增压、提温达到工艺生产要求。具体改造方案由节能服务公司根据用户实际情况进行设计改造。

上一篇：低压蒸汽乏汽如何回收？下一篇：低压乏（废）蒸汽再利用，提高节能收益

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蒸汽余热回收主要有以下两种方案：

一、蒸汽引射器蒸汽增压闪蒸设备密闭冷凝水回收装置焓差补偿式扩容净化回收器蒸汽引射提温升压余热回收ORC发电蒸汽节能湖南汽水分离器哪家好超大排量疏水器蒸汽发生器可以节能吗？疏水阀减温减压装置冷凝水回收闪蒸罐装置蒸汽减温减压装置系统晟德亿

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