Fuel System

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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Guide to Alternative Fuels

Guide to Alternative Fuels

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