瓦斯发电余热利用项目中管壳式换热器的设计

Design of Shell-and-tube Heat Exchanger in Waste Heat Refrigeration Project of Coal-bed Methane Power Generation

利用ASPEN EDR软件设计管壳式换热器能省去大量的手工计算过程,提高换热器设计者的效率。以低浓度瓦斯发电项目余热利用局部工艺为例,叙述了使用ASPEN EDR软件设计和校核管壳式换热器的通用方法。由于热流介质是具有爆炸危险性的低浓度煤层气,该换热器除了满足换热、压降等一般要求外,还必须采取抑阻爆措施来保证换热器的安全性。

Using ASPEN EDR software to design the shell-and-tube heat exchanger can save a lot of manual calculation process and improve the efficiency of the heat exchanger＇s designer. The general method for designing and verifying the shelland-tube heat exchanger by ASPEN EDR software was described in this paper by taking the local process of the low-concentration gas power generation project as the example. Since the heat flux medium is the low-concentration coal-bed methane having high explosive hazard,besides meeting the requirements of the heat exchange and pressure drop of the heat exchanger,correspouding explosion suppression measures must be taken to ensure its safety.