Methane exchanges with atmosphere

Methane gas is burned completely with 20 percent excess air at approximately atmospheric pressure. Both the methane and the air enter the furnace at 25°C saturated with water vapor, and the flue gases leave the furnace at 1,600°C. The flue gases then pass through a heat exchanger from which they emerge at 40 C. On the basis of I mol of methane, how much heat is lost from the furnace, and how much heat is transferred in the heat exchanger ... 

Internal Sources and Atmospheric Exchange of Methane. Methane is produced by specialized groups of obligate anaerobic bacteria (22, 23). The formation of methane as a metabolic product results either from the microbial reduction of CO2 with molecular H2, or via the fermentation of acetic acid. More structurally complex substrates may also serve as electron acceptors/donors, but the end result of methanogenesis is to produce methane and CO2 as end products (23). 

In the case of methane, the charge exchange reactions produce CHx. These ions through multistep reactions lead to the formation of C2H2. This process is very efficient, and it is known in the literature that methane can efficiently be converted in to acetylene in the spark discharge xmder atmospheric pressure plasma conditions (Leutner Stokes, 1961 Yao et al., 2002). It indicates that even though it is started with methane, most of the methane will be converted in to acetylene under our plasma conditions. The acetylene produced in the... 

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