What is the advantage of using flue gas inside a boiler? Explanation: Using flue gas to heat up the water tubes reduces the greenhouse effect indirectly by making use of its heat to turn the water in water tubes into steam . This will be used in steam power plant to rotate the turbine and to produce electricity.
What is the importance of analysis of flue gas?
Flue gas analysis will give you an indication of whether or not you are achieving maximum possible carbon combustion in your fuel . You can also analyse your flue gas in order to determine environmental impact and whether you are maintaining compliance with local emissions regulations.
What is flue gas used for?
9.4 Flue gas
Combustion is used primarily for heat by changing the potential chemical energy of the fuel to thermal energy . This occurs in a fossil fuel-fired power plant, a home furnace, or an automobile engine. Combustion is also used as a means of destruction for our unwanted materials.
Does flue gas include water?
The boiler flue is essentially the boiler’s chimney, but instead of smoke and soot being channelled away from the inside of the home, it’s mainly carbon dioxide and water vapour that’s emitted.
What is flue gas treatment?
Flue gas treatment, a process designed to reduce the amount of pollutants emitted from the burning of fossil fuels at an industrial facility, a power plant, or another source . ... If left untreated, flue gas from power plants, industrial facilities, and other sources can substantially affect local and regional air quality.
What is the difference between flue gas and fuel gas?
Flue gas is the gas exiting to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boiler or steam generator. Quite often, the flue gas refers to the combustion exhaust gas produced at power plants.
How do you get rid of flue gas?
In wet scrubbing systems, the flue gas normally passes first through a fly ash removal device , either an electrostatic precipitator or a wet scrubber (not shown here), and then into the SO 2 spray tower absorber, where it reacts with an alkaline reagent.
How do you analyze flue gases?
Flue Gas Analysis is performed by inserting a probe into the flue of the furnace, boiler, etc., between the last heat exchanger and draft diverter or any source of make-up air that could enter the flue that did not pass through the combustion process. This is known as ‘in-situ’ testing.
How do you calculate flue gas?
Total amount of dry flue gas per 1 kg wood = 4.872 m3. Therefore % CO2 = 0.97/4.872 = 19.91 assuming stoichiometric combustion (0 % O2). For 20 % excess air = 16.6 % CO2 For 40 % excess air = 14.2 % CO2 For 50 % excess air = 13.27.
What is the temperature of flue gas?
The typical furnace outlet temperature of flue gases is usually around 1200 °C which will decreases gradually along the pathway of heat transfer, while the temperature of the flue gases going to stack is around 150 °C.
Is it normal to smell gas from boiler flue?
The smell of gas is actually added in as a safety feature because gas itself is odourless. ... So what they were smelling was the unburnt chemical that was coming from the flue. This is actually fairly normal .
What is the ideal CO2 content of flue gas?
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 natural gas and approximately 13% for lighter oils .
Is boiler flue gas harmful?
Boiler flues are a crucial part of your heating system. ... If your boiler isn’t burning the gas correctly, carbon monoxide could be produced too. Boilers are made to be safe, and these gases shouldn’t harm you . However, a blocked flue can mean the gases become trapped in your home, causing you to breathe them in.
How effective is flue gas scrubbing?
Approximately 85% of the flue gas desulfurization units installed in the US are wet scrubbers, 12% are spray dry systems, and 3% are dry injection systems. removal efficiencies (greater than 90%) are achieved by wet scrubbers and the lowest (less than 80%) by dry scrubbers.
What is the purpose of flue gas desulfurization?
Flue gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO2) from flue gases produced from industrial combustion at petrol refineries , chemical manufacturing industries, mineral ore processing plants, and power stations to name a few.
What makes up flue gas?
Depending on the process, the fuel used and efficiency, flue gases can consist of nitrogen, carbon dioxide, trace amounts of oxygen and water vapor , and environmentally sensitive pollutants such as sulfur oxides, nitrogen oxide, carbon monoxide and particulates.
