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Premier Chemicals, LLC

Jerrold E Radway

Thomas M Miller

A process for capturing undesirable combustion products produced in a high temperature combustion system. Very finely sized particles of alkaline earth carbonates or hydroxides, with or without added ground fly ash, are provided in slurry form and are injected into the high temperature zone of a furnace. The particles flash calcine to provide substantially unagglomerated particles having a particle size of less than about 0.5 microns to capture and neutralize SOx, NOx, and toxic chemicals.

Control of combustion system emissions

A process for mitigation of fouling deposits within a combustion zone, capturing of toxic metal emissions, and reduction of visible sulfur emissions attributable to sulfuric acid mist during coal combustion. SOformed during coal combustion is reduced by the addition to the coal of raw, unprocessed magnesium-containing minerals such as magnesite ore or brucite ore. The minerals are pulverized to a fine particle size and combined with pulverized coal to provide a mixture of the particles. The mixture is combusted and the ore particles calcine and decrepitate to very fine magnesium oxide particles that have a significant particle surface area. The magnesium oxide particles react with the SOproduced during combustion of the coal and also capture toxic metals to reduce the quantity of undesirable stack discharge components.

Reduction of coal-fired combustion emissions

A process for controlling both fireside ash deposits and corrosion, and fouling, corrosion, and emissions due to SOformation within a fossil-fuel-fired combustion system, such as a furnace forming part of an electrical power generating plant. A solution of a soluble magnesium compound, which can be derived from wastes, such as the bleed stream from the power plant's SOscrubber, is injected into the combustion products within the furnace in the form of a fine spray and at a point at which the temperature is sufficiently high to produce submicron-size MgO particles. The SOreacts with the MgO particles to form MgSO. Insoluble magnesium compounds can be added to the solution to produce larger (micron sized) MgO particles on thermal decomposition. The micron-sized MgO particles are deposited on furnace surfaces to reduce ash deposits and to reduce catalytic generation of SO. The boiler wastes can be reacted with other industrial process waste products to provide marketable chemicals.

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El Cajon, CA, United States of America

Jerrold E Radway