Injection type non-catalyst denitrogen oxide process control sys

Details Injection type non-catalyst denitrogen oxide process control sys Injection type non-catalyst denitrogen oxide process control sys

1992-12-22

1994-02-15

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422110, 422108, 422111, 422172, B01D 5334

Patent

active

052864588

ABSTRACT:
The present invention relates to an injection noncatalyst denitrogen oxide process control system, in which a reducing agent (such as ammonia), carriers and additional gases are injected into the flue gas of a combustion device. The NO.sub.x in the flue gas will be reduced into nitrogen (N.sub.2) and water (H.sub.2 O). A pressure measurement device and a thermocouple device are installed in an injector for measuring the pressure difference and the temperature of the flue gas respectively, and then be converted into a voltage signal and a thermocouple signal respectively. Both of the signals will be transferred into a controller that is controlled by a computer. The controller can control the flow mass of the reducing agent, carriers and additional gases to the flue gas. Therefore, the reduction reaction of the NO.sub.x can be controlled, thereby maximizing the rate of denitrogen oxide (deNOx) and minimizing the discharge amount of the reducing agent.

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patent: 5078973 (1992-01-01), Kuroda
patent: 5103742 (1992-04-01), Valentino
patent: 5118282 (1992-06-01), Reynolds et al.

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