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    • 4. 发明授权
    • Emission control system for an oil-fired combustion process
    • 燃油燃烧过程排放控制系统
    • US5263850A
    • 1993-11-23
    • US831807
    • 1992-02-05
    • Thomas J. Walker
    • Thomas J. Walker
    • F23K5/08F23N5/00F23N5/18F23D11/44
    • F23N5/003F23K5/08F23N2021/04F23N2035/30F23N2037/08F23N5/18
    • A system for the for the control of exhaust gas emissions, such as NO.sub.x and SO.sub.x, from an oil-fired burner is disclosed. In the system, a heavier, less expensive grade of fuel oil, such as #6 oil, is burned, and the emissions from the burner are continuously monitored. If the concentration of NO.sub.x and/or SO.sub.x in the exhaust gas is greater than a predetermined threshold concentration, a lighter, more expensive grade of fuel oil, such as #2 oil, is blended with the heavier oil to reduce the concentration of NO.sub.x and/or SO.sub.x. A control valve in the lighter grade fuel oil line is controlled automatically in response to the measured concentration of NO.sub.x and/or SO.sub.x to blend into the heavier oil only the necessary amount of lighter oil. Thus, if the concentration of NO.sub.x and/or SO.sub.x in the exhaust gases from the blended oils is less than the predetermined threshold concentration, less of the lighter oil is blended with the heavier oil. In this manner, a cost efficient use of available fuel oils is obtained and predetermined exhaust gas limits are achieved.
    • 公开了一种用于控制来自燃油燃烧器的废气排放的系统,例如NOx和SO x。 在该系统中,燃料油(例如#6油)的燃料油较重,成本较低,燃烧,燃烧器的排放物被不断监测。 如果废气中的NOx和/或SOx的浓度大于预定的阈值浓度,则将更轻的,更昂贵等级的燃料油(例如#2油)与较重的油混合以降低NOx的浓度, /或SOx。 较轻等级的燃油油管路中的控制阀响应于测量的NOx和/或SOx浓度而自动控制,以将较重的油仅混合在必要量的较轻油中。 因此,如果来自混合油的废气中的NOx和/或SOx的浓度小于预定的阈值浓度,则较轻的油与较重的油混合。 以这种方式,可获得有效利用可用燃料油并实现预定的废气限制。