Oct 01, 2018 · Mercury is an important pollutant emitted from coal-fired power plants. Elemental mercury (Hg 0) is harder to be removed than oxidized mercury (Hg 2+) and particulate bound mercury (Hg p) in the flue gas at back-end of furnace.In this study, a method based on computational intelligence was proposed to enhance Hg 0 removal efficiency. It was realized by improving the transformation …
Jul 19, 2007 · The Mercu-RE process involves the following steps: capturing 10 μg/m 3 of Hg for 24 h from 100,000 actual cubic feet per minute (ACFM) of flue gas at 300–400 °F; taking one sorbent module off-line; regenerating the off-line sorbent module for 8 h at 600–700 °F by passing a hot purge gas through the module, thereby creating a highly concentrated mercury stream; capturing the mercury contained in the purge gas; putting the sorbent module back on-line; and shipping the recovered mercury
Abstract. Gaseous elemental and total (elemental + oxidized) mercury (Hg) in the flue gas from a coal-fired boiler was measured by a modified ultraviolet (UV) spectrometer. Challenges to Hg measurement were the spectral interferences from other flue gas components and that UV measures only elemental Hg. To eliminate interference from flue gas components, a cartridge filled with gold-coated sand removed elemental Hg from a flue gas …
Calculator: Flue Gas Analysis | Thermodyne Boilers
Flue gas treatment for CO capture
The losses caused by the sensible heat of flue gases can be calculated as: m& i φ L 3 = m& fuel ⋅ ∑ ⋅ hi (11) i m& fuel where m& fuel is the fuel mass flow [kg/s], m& i the mass flow of a flue gas component, and hi the specific enthalpy of a flue gas component (e.g. CO2) [kJ/kg].
Flue Gas Analysis Calculations. Flue gases are formed on combustion of air with fuel in the presence of heat. Combustion of fuel release flue gases which is a mixture of Carbon Dioxide, Carbon Monoxide, Sulfur Dioxide, H 2 O Vapor, Nitrogen or Nitro-Oxides, Oxygen and ash particles. The quantity of flue gases is also calculated using stoichiometry calculation when air reacts with the fuel.
During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury (Hg0) vapor in the high temperature regions of coal-fired boilers. As the flue gas is cooled, a series of complex reactions begin to convert Hg0 to ionic mercury (Hg2+) compounds and/or Hg