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US 6,322,356 B1Granted
Pollution abatement reactor system having nonprismatic structured media
AssigneeDurr Environmental, Inc.
InventorsAjay Gupta, Joseph Klobucar
Life of this patent
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AssigneeDurr Environmental, Inc.
InventorsAjay Gupta, Joseph Klobucar
Estimating the term…
An apparatus for treating gaseous pollutants in an air stream such as a regenerative thermal oxidizer or a selective catalytic reduction system, including a reaction chamber wherein the reaction media bed within the chamber comprises a plurality of nonprismatic ceramic blocks each having end faces, side faces and a chamfered face extending at an angle relative to the side faces of the blocks. The ceramic blocks are stacked in end-to-end and side-to-side relation within the reaction chamber and the ceramic blocks each include spaced parallel passages extending through the end and chamfered faces. The chamfered faces of adjacent blocks form voids between the blocks promoting turbulent gas flow through the voids and equalizing the pressure within the reaction chamber. The ceramic blocks may be symmetrical, wherein only a portion of the gas flows into the voids between the blocks and the remainder flows through the channels through the end faces or the ceramic blocks may be nonsymmetrical, wherein the chamfered faces are located vertically opposite an end face, such that all of the gas flowing through the reaction chamber flows through the gas passages into the voids between the blocks at alternative levels.
An apparatus for treating gas having entrained pollutants including at least one reaction chamber substantially filled with a reaction media bed, said reaction media bed receiving gas to be treated therethrough, said reaction media bed comprising a plurality of generally rectangular ceramic blocks each having opposed end faces, generally parallel side faces and generally parallel gas passages extending through said blocks through said end faces, said ceramic blocks stacked in side-to-side and end-to-end relation within said reaction chamber with said gas passages through said end faces generally coaxially aligned forming a reaction media bed of ceramic blocks with a portion of said gas flowing through said media bed through said gas passages, and said ceramic blocks further including chamfered edge faces extending at an angle between at least one of said side faces and each of said opposed end faces having gas passages extending therethrough, said chamfered edge faces thereby providing gas flow through said chamfered edge faces and between said ceramic blocks equalizing the gas pressure within said reaction chamber.
A regenerative thermal oxidizer including at least two heat exchange chambers each having heat exchange media therein and a combustion chamber communicating with said heat exchange chambers, one of said heat exchange chambers periodically receiving gas to be treated which flows through said one of said heat exchange chambers into said combustion chamber thereby treating said gas and the treated gas then flowing through the other of said heat exchange chambers thereby heating the heat exchange media in said other of said heat exchange chambers, said heat exchange media comprising a plurality of generally rectangular ceramic heat exchange blocks each having opposed end faces generally parallel, side faces and generally aligned gas passages extending through said ceramic heat exchange blocks through said end faces, said ceramic heat exchange blocks stacked in side-to-side and end-to-end relation within each of said heat exchange chambers with said gas passages through said end faces generally coaxially aligned forming a bed of ceramic heat exchange blocks in said heat exchange chambers with all of said gas flowing through said bed through said gas passages, and said ceramic heat exchange blocks further including chamfered surfaces extending at an angle relative to at least one of said side faces and each of said opposed end faces having an area equal to at least 20 percent of the area of said end faces and said gas passages extending through said chamfered surfaces, thereby providing gas flow through said chamfered surfaces and between said heat exchange blocks to equalize the gas pressure within said heat exchange chambers.
An apparatus for removing gaseous pollutants in an air stream including at least one reaction chamber substantially filled with a reaction media bed, said reaction media bed receiving gas therethrough, said reaction media bed comprising a plurality of generally rectangular ceramic blocks each having opposed end faces and generally parallel side faces, said ceramic blocks being of approximately the same length measured between said end faces and stacked in end-to-end and side-to-side relation forming a bed of said ceramic blocks within said reaction chamber, said ceramic blocks including chamfered faces extending at an angle relative to at least one of said side faces and each of said opposed end faces, and generally parallel gas passages extending through said ceramic blocks through said end and chamfered faces with said gas passages through said end faces substantially coaxially aligned, and said chamfered faces of said ceramic blocks being substantially aligned within said reaction chamber defining voids between said stacked ceramic blocks, and said gas passing through said gas passages through said chamfered face into said voids and circulating between said ceramic blocks substantially equalizing the gas pressure within said reaction chamber.
An apparatus for treating gas having entrained pollutants including at least one reaction chamber substantially filled with a reaction media bed, said reaction media bed receiving gas to be treated therethrough, said reaction media bed comprising a plurality of generally rectangular ceramic blocks each having opposed end faces, generally parallel side faces and generally parallel gas passages extending through said blocks through said end faces, said ceramic blocks stacked in side-to-side and end-to-end relation within said reaction chamber forming a plurality of stacked courses of ceramic blocks, each of said ceramic blocks including chamfered faces extending from a side face to each of said end faces forming chamfered faces adjacent each of said end faces with said chamfered faces aligned with an end face in an adjacent course of said stacked ceramic blocks, thereby providing gas flow through said chamfered faces and between said ceramic blocks equalizing the gas pressure within said reaction chamber.
Dependencies are inferred from the claim text.