The amount of fuel fired is usually set to control the process fluid exit temperature (or steam pressure in the case of boilers). A simple control system risks ' overshoot'. This is due to the time lag between increased fuel firing and the increase in process fluid temperature. There is therefore a period when excess fuel is fired. Proper tuning of the controls avoids this problem.
Apart from hydrogen, the fuel producing the least CO2 is methane - the main component of natural gas. Unlike most fuel oils, acid gas dew point corrosion is not a problem for natural gas and so there is no imposed bottom limit to stack temperature.
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Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.