Title: Apparatus for producing catalyst pellets of uniform size

Abstract: A catalyst strand sizer is described which produces catalyst pellets of uniform preselected length without producing an excessive amount of fines. The catalyst sizers comprises two fixed rotatable rolls wherein one roll has a compressible surface and the other roll is covered with a wire mesh of selected dimensions whereby when the catalyst strand extrudate is passed between said rolls, the strands are broken into catalyst pellets of preselected length.

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Inventors: Collins, Charles G. (Houston, TX, US)

Application Number: 776340
Filing Date: 1977-03-10
Publication_date: 1979-02-13
Assignee: Shell Oil Company (Houston, TX)
Primary Class(es): 225/97 83/307.1, 83/347, 83/444, 83/651.1, 83/906, 225/103
Other Classes:
US Patent Ref:

422657	Mar, 1890	Swenson	83/673.
1580916	Apr, 1926	Putt	83/672.
1580918	Apr, 1926	Putt	83/672.
3119312	Jan, 1964	Henc	83/347.
3205745	Sep, 1965	Hammer et al.	83/444.
3317100	May, 1967	Flemming et al.	225/97.
3583267	Jun, 1971	Topolski et al.	83/906.
3644109	Feb, 1972	Klink et al.	83/347.
3789715	Feb, 1974	Schuchardt et al.	83/346.
3880030	Apr, 1975	Rosengren	425/294.

Other Refs: 2137544

Mar, 1973	DE

Primary Examiner: Yost, Frank T.
Assistant Examiner:
Attorney: