Reducing sulfur gas emissions resulting from the burning of carbonaceous fuels

Abstract From the Canadian patent

A process of burning coal by adding liquid and/or powder sorbents prior to combustion captures sulfur and other undesirable compounds in non-reactive ceramic-like form after the combustion phase. The process involves addition of multiple element alkali powders and/or sorbents preferably containing oxidizing anions such as nitrates and nitrites preferably based on calcium. In various embodiments the remediation materials, when applied in a complex powder and/or liquid containing multiple elements result in higher sulfur capture than the materials would otherwise achieve on an individual basis. In a preferred embodiment the sorbents contain elements that minimize or lower the melting point of …