Atlantic Richfield Company

Thomas A Collins

Andrew P Voss

Frederick L Voelz

Edmund W Ballou

An apparatus useful in detecting changes in distance comprises: a signal emitter capable of emitting a substantially constant signal; a signal reflector capable of reflecting at least a portion of the substantially constant signal and being moveable in a substantially straight line direction toward or away from the emitter; and a signal receiver capable of receiving the reflected signal, whereby a change in the received signal is indicative of a change in the distance between the emitter and reflector. This apparatus is particularly useful in detecting changes in the amount of liquid in a liquid storage tank.

Apparatus for detecting level changes in distance

An improved process minimizing the detrimental effects caused by inadvertently contacting a high sulfur, high water-containing hydrocarbon feedstock with a platinum group metal, halogen-containing catalyst is disclosed. The present process involves discontinuing the high sulfur, high water-containing feedstock-catalyst contacting while passing hydrogen over the catalyst. The catalyst halogen concentration is maintained or increased by the addition of halogen component, for example, during the hydrogen pass through. Once the sulfur contamination has been removed from the catalyst, normal hydrocarbon reforming is resumed.

Hydrocarbon reforming process with sulfur sensitive catalyst

An improved hydrocarbon reforming process comprising:

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Olympia Fields, IL, United States of America

Thomas A Collins