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5471957 Compact boiler having low NOx emissions
PatentsALERT
VIII
vapor discharge from the desiccant by a regenerater section of the dehumidifier, a refrigerant desuperheater efficient for compression, a reflux boiler for desiccant regeneration, and a glycol interchanger recovery system for desiccant recovery.
5472341 BURNER HAVING LOW POLLUTANT EMISSIONS Meeks Thoma Loma Linda, CA, 92354, UNITED STATES
5471956 HEAT-INSULATING FOR COMBUSTION
STRUCTURE EQUIPMENT
Watanabe Shigehiro; Ikeda Kazuhiro; Sogabe Takashi; Ochi Toshiaki Matsuyama, JAPAN Assigned to Miura Co Ltd Discloses a heat-insulating structure for combustion equipment of such a type that a burner element of combustion equipment is insertedly disposed at an installation opening of thermal equipment such as a boiler, with a view to simplified structure and enhanced workability. In combustion equipment having a burner element insertedly disposed at the installation opening of the thermal equipment via the support frame a thermal insulator flush with the burner element on the thermal equipment side is disposed between the installation opening and the outer side face of the support frame.
5471957 COMPACT BOILER HAVING LOW NOx EMISSIONS Brady Robert T; Werling Joseph H Elmhurst, IL, UNITED STATES Assigned to Mark IV Transportation Products Corporation Method and apparatus for reducing the NOx levels in stack emissions of compact boilers and fluid heaters through selective injection of exhaust flue gases into the combustion process. Flue gas injection into the primary and secondary air of the burner along with flue gas injection directly into the combustion process is utilized. Injection of generated steam from a compact boiler, selectively injected into the combustion process is also provided.
A burner capable of burning low pressure combustible gas with minimum pollutant emissions. The gas is preheated to hydrocarbon cracking temperatures in a heat exchanger located directly within an elongated water jacketed combustion chamber of the burner. The heated, expanding and rapidly flowing gas from the heat exchanger passes through a nozzle to further accelerate the gas for passage into an air intake system together with aspirated air. The nozzle and intake system are adjustable to meter in proper amounts of gas and air for a stoichiometric mixture. The gas/air mixture is laterally directed into the combustion chamber to induce turbulence and continued mixing for optimum ignition and burning. The resulting heated gases are useful in various end applications, such as in steam generating boilers. The burner is also adapted to inject steam into the preheated gas or into the intake system or into both to increase mass flow of air and to promote low pollutant emissions.
5472568 METHOD FOR CONTROLLING THE VISCOSITY OF KRAFT BLACK LIQUOR Mullen Walter; Magnotta Vincent L Burlington, PA, CANADA Assigned to Air Products and Chemicals Inc An improved method of chemical recovery from kraft black liquor is disclosed in which the heat generated by controlled oxidation of the liquor is utilized to reduce the viscosity and net heating value of the liquor which allows the firing of a more concentrated liquor in the recovery boiler. Net steam recovery is increased for a given black liquor feed rate. Alternatively, the firing of liquor having a higher solids concentration is possible, which increases the throughput of the recovery boiler.
VIII
vapor discharge from the desiccant by a regenerater section of the dehumidifier, a refrigerant desuperheater efficient for compression, a reflux boiler for desiccant regeneration, and a glycol interchanger recovery system for desiccant recovery.
5472341 BURNER HAVING LOW POLLUTANT EMISSIONS Meeks Thoma Loma Linda, CA, 92354, UNITED STATES
5471956 HEAT-INSULATING FOR COMBUSTION
STRUCTURE EQUIPMENT
Watanabe Shigehiro; Ikeda Kazuhiro; Sogabe Takashi; Ochi Toshiaki Matsuyama, JAPAN Assigned to Miura Co Ltd Discloses a heat-insulating structure for combustion equipment of such a type that a burner element of combustion equipment is insertedly disposed at an installation opening of thermal equipment such as a boiler, with a view to simplified structure and enhanced workability. In combustion equipment having a burner element insertedly disposed at the installation opening of the thermal equipment via the support frame a thermal insulator flush with the burner element on the thermal equipment side is disposed between the installation opening and the outer side face of the support frame.
5471957 COMPACT BOILER HAVING LOW NOx EMISSIONS Brady Robert T; Werling Joseph H Elmhurst, IL, UNITED STATES Assigned to Mark IV Transportation Products Corporation Method and apparatus for reducing the NOx levels in stack emissions of compact boilers and fluid heaters through selective injection of exhaust flue gases into the combustion process. Flue gas injection into the primary and secondary air of the burner along with flue gas injection directly into the combustion process is utilized. Injection of generated steam from a compact boiler, selectively injected into the combustion process is also provided.
A burner capable of burning low pressure combustible gas with minimum pollutant emissions. The gas is preheated to hydrocarbon cracking temperatures in a heat exchanger located directly within an elongated water jacketed combustion chamber of the burner. The heated, expanding and rapidly flowing gas from the heat exchanger passes through a nozzle to further accelerate the gas for passage into an air intake system together with aspirated air. The nozzle and intake system are adjustable to meter in proper amounts of gas and air for a stoichiometric mixture. The gas/air mixture is laterally directed into the combustion chamber to induce turbulence and continued mixing for optimum ignition and burning. The resulting heated gases are useful in various end applications, such as in steam generating boilers. The burner is also adapted to inject steam into the preheated gas or into the intake system or into both to increase mass flow of air and to promote low pollutant emissions.
5472568 METHOD FOR CONTROLLING THE VISCOSITY OF KRAFT BLACK LIQUOR Mullen Walter; Magnotta Vincent L Burlington, PA, CANADA Assigned to Air Products and Chemicals Inc An improved method of chemical recovery from kraft black liquor is disclosed in which the heat generated by controlled oxidation of the liquor is utilized to reduce the viscosity and net heating value of the liquor which allows the firing of a more concentrated liquor in the recovery boiler. Net steam recovery is increased for a given black liquor feed rate. Alternatively, the firing of liquor having a higher solids concentration is possible, which increases the throughput of the recovery boiler.