Method of and apparatus for reducing sulfur in combustion gases

Gas separation: processes – With control responsive to sensed condition – Electric or electrostatic field

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95 13, 95 61, 96 19, 96 27, 110342, 110345, 42218604, 42324405, 431 8, B03C 3013

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active

057953678

ABSTRACT:
A method for reducing the sulfur content in combustion gases from burning coal includes the steps of applying opposite electrostic charges to fuel particles and to reaction particles, and mixing the oppositely charged particles prior to combustion to facilitate the formation of sulfur compounds from sulfur in the fuel upon combustion of the fuel, to thereby reduce the sulfur content in the combustion gases. The reaction particles are preferably a carbonate such as CaCO.sub.3 and MgCO.sub.3. The apparatus for implementing the method includes a first pneumatic line for conveying fuel particles, and a first electrostatic charging device for applying an electrostatic charge to the fuel particles conveyed in the line; and a second pneumatic line for conveying carbonate particles, and a second electrostatic charging device for applying an electrostatic charge to the carbonate particles conveyed in the line that is opposite in polarity to the charge applied to the fuel particles. The first pneumatic line and the second outlet line are electrically insulated from each other but outletting to a chamber in sufficiently close proximity to allow the fuel particles and carbonate particles to mix prior to combustion.

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