城市多气源天然气互换性的基准气选择方法研究  

Study on Selection Methods of Adjustment Gas for Chinese Urban Natural Gas Interchangeability

作　　者：张杨竣[1] 秦朝葵[1] 

机构地区：[1]同济大学机械工程学院,201804

出　　处：《城市燃气》2012年第9期18-24,共7页Urban Gas

摘　　要：随着我国天然气的发展,城市多气源化,多气源天然气互换性问题越来越严重。基于此本文提出了一种选择合适的基准气以应对多气源的互换问题。以广东省9种气源为例,先对所有气源在不同基准气情况下进行AGA和Weaver指数理论计算,预测各自的互换情况。通过理论预测,当选择华白数值位于所有气源华白数的60%位置的粤西LNG2作为基准气时,与其他气源置换不会引起严重的互换问题。为了验证理论预测的正确性,通过对17台代表性的样本灶,以粤西LNG2为基准气进行初状态调节后,分别对9种气源根据国标规定进行性能响应测试。实验结果显示80%的样本在气源互换时均不会出现严重的互换问题,所选用的粤西LNG2可以作为基准气来应对广东省出现的多气源互换情况。With the development of natural gas industry in China, more and more cities introduce natural gas from different sources to improve supply reliability. Accordingly interchangeability problem begin to emerge. In this paper a new approach was put forward to define a suitable ＂reference gas＂ , with reference to which gases of different compositions can be interchangeable. By means of AGA and Weaver Indices, calculations were made to analyze the interehangeability between natural gases from 9 sources in Guangdong Province. Results show that Yuexi LNG2, whose Wobbe index falls in the middle of Richest and Leanest, seems to be a good candidate. Experiments were carried out to test the percentage of qualified efficiency and CO emission, according to Chinese National standard. It turned out 80% of sampled gas cookers can maintain and 80% gas sources can be interchangeable when Yuexi LNG2 is defined as the reference gas.

关 键 词：天然气 互换性 基准气 AGA指数 Weaver指数 

分 类 号：TU996[建筑科学—供热、供燃气、通风及空调工程]