5 - 10% for natural gas; 5 - 20% for fuel oil; 15 - 60% for coal; Carbon dioxide - CO 2 - is a combustion product and the content of CO 2 in a flue gas is an important indication of the combustion efficiency. Optimal content of carbon dioxide CO 2 after combustion is approximately 10% for
Environmental Impacts of Natural Gas | Union of Concerned ...
Jun 19 2014 · Natural gas is a fossil fuel though the global warming emissions from its combustion are much lower than those from coal or oil. Natural gas emits 50 to 60 percent less carbon dioxide (CO2) when combusted in a new efficient natural gas
Boiler Combustion Control and Monitoring System ...
A novel combustion control system along with gas sensors sets the opening of fuel and air inlets based on flue-gas concentrations. Continuous feedback from measurements of oxygen carbon monoxide and nitrogen oxide concentrations enable the control system to improve combustion efficiency while maintaining low carbon monoxide and nitrogen oxide emissions and allows continuous monitoring of
Because the boiler is hotter than its environment some heat will be transferred to the surroundings. Damaged or poorly installed insulation will greatly increase the potential heat losses. A reasonably well-insulated shell or water-tube boiler of 5 MW or more will lose between 0.3 and 0.5% of
Principal component of natural gas; leakage from gas wells pipelines and distribution systems: Global warming: 21: H 2 O (water vapour) Combustion of hydrogen in fuel: Localized fog Particulates (dust soot fumes) Unburned or partially burned carbon and hydrocarbons; also ash and dirt in fuel: Smog Trace elements: Impurities in fuel: Potential carcinogens