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4460331 Fume incineration for paint drying oven
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NEW PATENTS
4460331 FUME INCINERATION FOR PAINT DRYING OVEN John Robson, Maximilian Carthew, Kent, MI, United Kingdom assigned to Haden Schweitzer Corporation
A fume incineration system for an industrial process site such as a paint-drying oven (10) producing a combustible effluent. A first duct system (34, 38, 42) conveys effluent to the incinerator (14). A second duct system (44, 48) conveys incinerated effluent back to the site. A third duct system (52,56) conveys part of the incinerated effluent to an atmospheric vent (57). Control dampers (50, 74) in the duct systems operate sequentially to handle temperature changes, and control damper (84) controls system air flow balance. All ducts and thermal devices except the incinerator are located in an insulated housing (12). A thermal incinerator (14) having an internal preheater comprising an annular tube bundle is disclosed.
Disclosed is a liquid waste combustion system having a burner comprising a combustion chamber and first, second and third spaced apart injectors positioned outside of the combustion chamber and arranged so as to inject separate unconfined streams of first, second and third waste liquids into the combustion chamber, the axes of the waste streams defining a substantially conical surface converging at an apex within the combustion chamber and the waste streams mixing in the area of this apex. The first waste liquid has a BTU value below that required for combustion, the second waste liquid has a BTU value at least high enough to support combustion, and the third waste liquid has a BTU value significantly greater than that of the second liquid such that the waste mixture is combustible. Means are provided for supplying combustionsupporting gas to the combustion chamber and for igniting the waste mixture within the combustion chamber. Means may also be provided for controlling relative to each other the rates of injecting the first and third waste liquids and this control means may be responsive to one or more characteristics of the combustion products and/or combustion conditions, such as combustion temperature. Retention means may be provided for maintaining combustion product temperature above at least about 2,000 degrees F. for at least about 2 seconds and may include a rotary kiln and downstream retention chamber in communication with the combustion chamber.
4475466 BURNER AND INCINERATOR SYSTEM FOR LIQUID WASTE David A Gravely assigned to Pyrochem Inc
4477939 REMOVABLE SLUDGE CLEANER FOR TANKS Harold R White, Alex J Dancer assigned to Alar Engineering Corporation
NEW PATENTS
4460331 FUME INCINERATION FOR PAINT DRYING OVEN John Robson, Maximilian Carthew, Kent, MI, United Kingdom assigned to Haden Schweitzer Corporation
A fume incineration system for an industrial process site such as a paint-drying oven (10) producing a combustible effluent. A first duct system (34, 38, 42) conveys effluent to the incinerator (14). A second duct system (44, 48) conveys incinerated effluent back to the site. A third duct system (52,56) conveys part of the incinerated effluent to an atmospheric vent (57). Control dampers (50, 74) in the duct systems operate sequentially to handle temperature changes, and control damper (84) controls system air flow balance. All ducts and thermal devices except the incinerator are located in an insulated housing (12). A thermal incinerator (14) having an internal preheater comprising an annular tube bundle is disclosed.
Disclosed is a liquid waste combustion system having a burner comprising a combustion chamber and first, second and third spaced apart injectors positioned outside of the combustion chamber and arranged so as to inject separate unconfined streams of first, second and third waste liquids into the combustion chamber, the axes of the waste streams defining a substantially conical surface converging at an apex within the combustion chamber and the waste streams mixing in the area of this apex. The first waste liquid has a BTU value below that required for combustion, the second waste liquid has a BTU value at least high enough to support combustion, and the third waste liquid has a BTU value significantly greater than that of the second liquid such that the waste mixture is combustible. Means are provided for supplying combustionsupporting gas to the combustion chamber and for igniting the waste mixture within the combustion chamber. Means may also be provided for controlling relative to each other the rates of injecting the first and third waste liquids and this control means may be responsive to one or more characteristics of the combustion products and/or combustion conditions, such as combustion temperature. Retention means may be provided for maintaining combustion product temperature above at least about 2,000 degrees F. for at least about 2 seconds and may include a rotary kiln and downstream retention chamber in communication with the combustion chamber.
4475466 BURNER AND INCINERATOR SYSTEM FOR LIQUID WASTE David A Gravely assigned to Pyrochem Inc
4477939 REMOVABLE SLUDGE CLEANER FOR TANKS Harold R White, Alex J Dancer assigned to Alar Engineering Corporation