Study on natural gas interchangeability discriminant method

This paper reviewed the research progress of natural gas interchangeability in European and American countries and regions, and summarized that the commonly used gas interchangeability methods in the world, which are AGA Bulletin 36 method, Weaver indices method in US, Delbourg method in France, Dutton Diagram method in UK, ect. These methods are all developed for atmospheric combustion, with respective applicability and limitation. In China, the town gas was categorized and defined by composition according to France Delbourg interchangeability method in 1982. The paper also summarized the research and progress on gas interchangeability in recent years in China, and indicated that with the diversification of the fuel gas terminal equipments, the desirable and scientific gas interchangeability indices and gas distribution control parameters could be studied and chosen according to the specific gas combustion equipment, and based on the difference of mixed modes of gas and air when burning.