Chevron Research Company

William L Dimpfl

William A Blanton, Jr

The disclosure relates to an apparatus for measuring the size of gas entrained particles by detecting the rate of incandescent burning of the particles. Entrained particles are passed at a controlled velocity through a heated zone where they are gradually consumed. The radiant energy emitted by the burning particles is detected at varying locations along the path of flow through the heated zone. An indication of particle size distribution is obtained by deriving the third derivative of detected radiant energy intensity with respect to distance of flow through the heated zone.

Apparatus for measuring particle size

Method and apparatus for measuring particle size

Sulfur oxide and nitrogen oxide control by use of a sulfur sorbent and sulfur dioxide oxidation promoter in the regenerator and downstream removal of nitrogen oxides by selective catalytic reduction using ammonia injection and trapped cracking catalyst fines.

Simultaneous sulfur oxide and nitrogen oxide control in FCC units using

Carbonaceous particles are removed from an exhaust gas stream by passing the stream through a frustoconically shaped bleaching zone into which a similarly shaped diverging beam of laser radiation that is absorbed selectively by the particles is directed countercurrent to the stream. The radiation is reflected within the zone to increase the radiation density in the zone over that generated by the laser directly.

Growing community of inventors

Oakland, CA, United States of America

William L Dimpfl