Incinerator for complete oxidation of impurities in a gas stream
First Claim
1. A device for oxidizing materials in a gas stream, comprising:
- a combustion chamber in said device, said device and said combustion chamber both having a top and a bottom, said device further having a gas outlet and being adapted to operate in conjunction with means applying negative pressure to said outlet;
means for introducing process gas and a source of fuel into the top of said combustion chamber;
means for introducing oxygen carrying gas into the top of said combustion chamber;
means for mixing said oxygen carrying gas with said process gas and fuel so that said mixture can burn in said combustion chamber to form an exhaust gas;
means for directing said mixture outwardly toward the wall of said combustion chamber as it is burning;
means for permitting said gas to exit from the bottom of said combustion chamber; and
means for directing said gas from said combustion chamber out of the outlet of said device.
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Accused Products
Abstract
A device for oxidizing gaseous materials, comprising a combustion chamber, wherein the device and the combustion chamber both have a top and a bottom, the device further having a gas outlet and being adapted to operate in conjunction with means applying negative pressure to the outlet, means for introducing process gas and a source of fuel into the top of the combustion chamber, means for effecting heat exchange between oxygen-containing gas and the combustion chamber to preheat the oxygen-containing gas, means for introducing the preheated gas into the top of the combustion chamber, means for mixing the preheated gas with the process gas and fuel so that the mixture can burn in the combustion chamber to form an exhaust gas, means for permitting the gas to exit from the bottom of the combustion chamber, means for diluting the exhaust with air to form a flue gas, and means for directing the flue gas from the bottom of the combustion chamber out of the outlet of the device. The heat exchanger may concentrically surround the combustion chamber, and the preheated oxygen-carrying gas may swirl in a first direction as it enters the combustion chamber, there to be mixed with process gas and fuel swirling in the opposite direction. Means may be provided for removing particulate materials from the combustion chamber. Also disclosed is a method for incinerating materials in a gas stream using the disclosed incinerator.
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Citations
26 Claims
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1. A device for oxidizing materials in a gas stream, comprising:
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a combustion chamber in said device, said device and said combustion chamber both having a top and a bottom, said device further having a gas outlet and being adapted to operate in conjunction with means applying negative pressure to said outlet; means for introducing process gas and a source of fuel into the top of said combustion chamber; means for introducing oxygen carrying gas into the top of said combustion chamber; means for mixing said oxygen carrying gas with said process gas and fuel so that said mixture can burn in said combustion chamber to form an exhaust gas; means for directing said mixture outwardly toward the wall of said combustion chamber as it is burning; means for permitting said gas to exit from the bottom of said combustion chamber; and means for directing said gas from said combustion chamber out of the outlet of said device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for oxidizing materials in a gas stream, comprising:
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a combustion chamber in said device, said device and said combustion chamber having a top and a bottom and a vertical axis; a preheater chamber located radially outside of said combustion chamber adapted to preheat oxygen-containing gas; a mixing zone at the top of said combustion chamber; means for introducing oxygen-containing gas into said preheater chamber; means for introducing oxygen-containing gas from said preheater, fuel, and impurity-containing process gas into said mixing zone; a first swirler for swirling said oxygen-carrying gas entering said mixing zone in a first direction; a second swirler for swirling said process gas entering said mixing zone in a second direction; an opening at the bottom of the combustion chamber through which exhaust gas can exit said chamber; and means for removing accumulations of particulate products of combustion from said incinerator. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for oxidizing materials in a gas stream comprising the steps of:
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introducing fuel and process gas into a combustion chamber, said chamber having walls; introducing preheated oxygen/carrying gas into said combustion chamber and mixing it with said fuel and process gas to form a burning mixture; directing said burning mixture outwardly toward a wall of said combustion chamber as it is burning and forming an exhaust gas which exits said combustion chamber; preheating said oxygen carrying gas prior to its entry into said combustion chamber with heat from said oxidation of said fuel; and mechanically scraping accumulated solid combustion products from the walls of said chamber. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification