Abstract: Emissions of mercury, NOx, and/or SOx are reduced by enzyme treating coal before combustion, optionally with further treatment of the coal with certain non-bromine containing powder sorbents. y using the steps together, mercury can be reduced by 40% or more, and NOx by 20% or more. Advantageously, no bromine is introduced with the remediation steps.

Abstract: Emissions of mercury, NOx, and/or SOx are reduced by enzyme treating coal before combustion, optionally with further treatment of the coal with certain non-bromine containing powder sorbents. y using the steps together, mercury can be reduced by 40% or more, and NOx by 20% or more. Advantageously, no bromine is introduced with the remediation steps.

Abstract: Powder components containing calcium, alumina, silica, iron, magnesium, and a halogen sorbent are used in combination during coal combustion to produce environmental benefits. Sorbents are added to the coal ahead of combustion and/or are added into the flame or downstream of the flame. The alkalinity and chlorine of the powder is minimized in order to mitigate unwanted fouling, especially when used with sub-bituminous and lignite coals.

Abstract: The present invention is a method for determining the optimum operating practice for an industrial process. The methodology includes a combination of process control steps and data analysis techniques to investigate responses to controlled “black box” process inputs, e.g., coal and air feeds for coal-fired furnaces in the case studies above. A unique time-dependent perturbation is applied to individual process feed streams to give a signature in the data that permits the filtering and detection of various measured responses, e.g., continuous emission monitor readings for NOx, SO2, CO2, CO, and opacity for regulated electric utility furnaces. The perturbation is implemented using the plant control system. Individual control signal set points are perturbed for each piece of equipment supplying process inputs of interest. As a result, complex commercial processes can be evaluated for optimization without changing the normal configuration of the system.

Abstract: A device for optimizing coal-air proportions entering a furnace is disclosed. The invention generally comprises a burner nozzle having two ends and an outer tube forming a perimeter of the burner nozzle; an entry spool having a rear wall and defining an inlet port at one of the ends of the burner nozzle; an inner tube formed within the burner nozzle; an annular blade chamber defined between the outer tube and the inner tube; and, a blade formed within the blade chamber configured as an extension of the rear wall of the entry spool, the blade twisted to form a spiral around the inner tube, wherein fuel particles can be separated from a primary air stream and collected on the blade to form a coal-concentrated stream for entry into the furnace. As a result, three separate streams are injected into the furnace, thereby minimizing NOx through the concentration of solid fuel.