Patents Assigned to Noxso Corporation
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Patent number: 6113870Abstract: Process and apparatus which increase the concentration of NO.sub.x in an off-gas stream of heated air carrying NO.sub.x removed or desorbed from sorbent, feed the off-gas stream into NO.sub.x reduction apparatus, or to nitrogen by-product producing apparatus, and maintain the volume of the off-gas stream substantially constant as the NO.sub.x concentration is being increased.Type: GrantFiled: November 17, 1995Date of Patent: September 5, 2000Assignee: Noxso CorporationInventors: John Leo Haslbeck, Warren Tzu Ma, James Brown Black, III
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Patent number: 5997823Abstract: Processes and apparatus for removing acid gases from hot flue gases utilizing a slurry consisting of water, calcium chloride and at least one absorbing agent selected from a group consisting of calcium oxides, magnesium oxides, calcium hydroxides, magnesium hydroxides, alkali metal oxides, alkali metal hydroxides, and alkali metal carbonates, introducing the slurry into the rising stream of hot flue gas to absorb the acid gas into the water and thereafter to react the absorbed acid gas with the absorption agent and thereafter to evaporate the water to produce dry solids comprising reaction products and unreacted absorption agents suspended in the flue gas. The calcium chloride reduces the water vapor pressure of the slurry to reduce the rate at which the water evaporates so as to increase the rate at which the acid gas is absorbed into the water before the water evaporates.Type: GrantFiled: August 18, 1997Date of Patent: December 7, 1999Assignee: Noxso CorporationInventor: John L. Haslbeck
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Patent number: 5428907Abstract: A downcomer including a tubular member oriented vertically and extending downwardly from a fluidized grid and including a lower portion provided with an inclined opening formed at a first angle with respect to the tubular member, and a flapper valve including an upper portion and a lower portion formed at a second angle with respect to the upper valve portion, the upper portion of the flapper valve is mounted pivotally to the tubular member at a position to normally place the lower portion of the flapper valve in engagement with and closing the inclined opening.Type: GrantFiled: August 3, 1994Date of Patent: July 4, 1995Assignee: NOXSO CorporationInventors: John L. Haslbeck, Carroll H. Sherman, Scott M. Harkins
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Patent number: 5383955Abstract: Removal NO.sub.x and SO.sub.x from the flue gas utilizing a transport line adsorber through which sorbent is transported by pressurized flue gas to cause the sorbent to absorb NO.sub.x and SO.sub.x from the flue gas while the flue gas is transporting the sorbent particles through the transport line adsorber. A plurality of interconnected cyclones may be utilized to contact sorbent saturated with NO.sub.x and SO.sub.x removed from the flue gas with a heated gas to heat the sorbent and remove the NO.sub.x from the sorbent and separate the sorbent and the heated gas to produce an off stream of heated gas carrying the removed NO.sub.x away; the heated gas and gravity combine to pass the sorbent through the plurality of cyclones and which cyclones are positioned vertically and successively downwardly with respect to each other. A plurality of interconnected cyclones is also utilized to contact heated sorbent having the NO.sub.x and SO.sub.Type: GrantFiled: December 13, 1993Date of Patent: January 24, 1995Assignee: Noxso CorporationInventors: Lewis G. Neal, Warren Ma, Min-Yan Chang, Qian Zhou, Carmo J. Pereira, Karl W. Plumlee, Jean W. Beeckman
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Patent number: 5302188Abstract: Removal of NO.sub.x and SO.sub.x from flue gas utilizing a transport line adsorber through which sorbent is transported by pressurized flue gas to cause the sorbent to adsorb NO.sub.x and SO.sub.x from the flue gas while the flue gas is transporting the sorbent through the transport line adsorber A plurality of interconnected cyclones is utilized to contact sorbent saturated with NO.sub.x and SO.sub.x removed from the flue gas with a heated gas to heat the sorbent and remove the NO.sub.x from the sorbent and separate the sorbent and the heated gas to produce an off stream of heated gas carrying the removed NO.sub.x away; the heated gas and gravity combine to pass the sorbent through the plurality of cyclones and which cyclones are positioned vertically and successively downwardly with respect to each other. A plurality of interconnected cyclones is also utilized to contact heated sorbent having the NO.sub.x and SO.sub.Type: GrantFiled: February 16, 1993Date of Patent: April 12, 1994Assignee: Noxso CorporationInventors: Lewis G. Neal, Warren Ma
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Patent number: 4940569Abstract: Novel sorbents comprising (a) an alumina substrate having a pore volume between 0.4 and 0.8 cc/g, and (b) an alkali or alkaline earth component, for example, sodium carbonate, wherein the amount of the alkali or alkaline earth component is between 50 and 400 .mu.g per m.sup.2 of the substrate. The sorbents of the present invention are outstandingly effective for the removal of nitrogen oxides, sulfur oxides and hydrogen sulfide from waste gas streams.Type: GrantFiled: September 20, 1988Date of Patent: July 10, 1990Assignee: Noxso CorporationInventors: Lewis G. Neal, John L. Haslbeck, Hsiaopin Tseng
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Patent number: 4798711Abstract: Novel sorbents comprising (a) an alumina substrate having a pore volume between 0.4 and 0.8 cc/g, and (b) an alkali or alkaline earth component, for example, sodium carbonate, wherein the amount of the alkali or alkaline earth component is between 50 and 400 .mu.g per m.sup.2 of the substrate. The sorbents of the present invention are outstandingly effective for the removal of nitrogen oxides, sulfur oxides and hydrogen sulfide from waste gas streams.Type: GrantFiled: August 21, 1987Date of Patent: January 17, 1989Assignee: Noxso CorporationInventors: Lewis G. Neal, John L. Haslbeck, Hsiaopin Tseng
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Patent number: 4755499Abstract: Novel sorbents comprising (a) an alumina substrate having a pore volume between 0.4 and 0.8 cc/g, and (b) an alkali or alkaline earth component, for example, sodium carbonate, wherein the amount of the alkali or alkaline earth component is between 50 and 400 .mu.g per m.sup.2 of the substrate. The sorbents of the present invention are outstandingly effective for the removal of nitrogen oxides, sulfur oxides and hydrogen sulfide from waste gas streams.Type: GrantFiled: September 9, 1986Date of Patent: July 5, 1988Assignee: Noxso CorporationInventors: Lewis G. Neal, John L. Haslbeck, Hsiaopin Tseng
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Patent number: 4426365Abstract: Novel sorbents comprising (a) an alumina component comprising alumina of the surface area of at least 20 and preferably 100 square meters per gram, and (b) a salt, or mixtures of salts, of an alkali or alkaline earth metal, especially oxides, hydroxides, carbonates, nitrates, acetates or aluminates of sodium and potassium, are outstandingly effective for the removal of nitrogen oxides and sulfur oxides from waste gas streams.Type: GrantFiled: March 31, 1981Date of Patent: January 17, 1984Assignee: Noxso CorporationInventor: Jules Magder
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Patent number: 4323544Abstract: Novel sorbents comprising (a) an alumina component comprising alumina of the surface area of at least 20 and preferably 100 square meters per gram, and (b) a salt, or mixtures of salts, of an alkali or alkaline earth metal, especially oxides, hydroxides, carbonates, nitrates, acetates or aluminates of sodium and potassium, are outstandingly effective for the removal of nitrogen oxides and sulfur oxides from waste gas streams.Type: GrantFiled: April 28, 1980Date of Patent: April 6, 1982Assignee: Noxso CorporationInventor: Jules Magder