Industrial Technology Research Institute

Li-Chiang Chen

Shyh-Ching Yang

Steven J Bortz

Jing-Lyang Jeng

Jar-Lu Huang

Jar-Ru Huang

A burner having a primary flame zone and a secondary flame zone. The throat of the quarl in the center of the primary flame zone is provided with a gas nozzle supported by a swirl element. The orifices of the nozzle are radially and obliquely distributed so that the gas introduced via the frustoconical chamber mixed with the primary air to form a swirl current. The frustoconical chamber extends to the inner surface of the burner to form a circular extended section to restrain the width of the flame; the extended section is parallel to the secondary air inlets distributed on the burner body around the periphery of the frustoconical chamber to effectively control the formation of NOx during combustion.

Burner for the combustion of coke oven gas

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.

Injection type non-catalyst denitrogen oxide process control system

Disclosed is an axial vane for a swirl generator according to mathematical equation so that the air flow is gradually deviated with minimized pressure drop and turbulence intensity.

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Hsinchu, Taiwan

Li-Chiang Chen