Title: Catalyst sampling method

Abstract: Small representative samples of catalyst are removed from a fixed bed reactor through a withdrawal conduit and transferred into a sample receiver held at a lower pressure by quickly unsealing the withdrawal conduit and causing a small and sudden gas flow which fluidizes catalyst and lifts it into the withdrawal conduit, through which it falls by the action of gravity.

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Inventors: Vande Ven, John E. (Bensenville, IL, US)
Fischer, Steven M. (Jacksonville, FL, US)

Application Number: 572603
Filing Date: 1975-04-28
Publication_date: 1976-08-10
Assignee: Universal Oil Products Company (Des Plaines, IL)
Primary Class(es): 73/863.81 73/864.33
Other Classes:
US Patent Ref:

3129590	Apr, 1964	Ellis	73/421.
3348419	Oct, 1967	Addison	73/424.
3442138	May, 1969	Hensel	73/423.
3487695	Jan, 1970	Haunschild	73/421.
3653265	Apr, 1972	Vallino	73/421.
3786682	Jan, 1974	Winter	73/421.

Other Refs:
Primary Examiner: Swisher, S. Clement
Assistant Examiner: Corr, Denis E.
Attorney: Hoatson, Jr.; James R., Erickson; Robert W., Page, II; William H.