Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Patent
1986-10-21
1989-04-04
Doll, John
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
C01B 3328
Patent
active
048185094
ABSTRACT:
A continuous process is described for manufacturing a wide variety of zeolites having selected crystal sizes and other desired characteristics. Selected raw materials are fed to a precursor tank of relatively large capacity, wherein the resultant zeolite precursor slurry is held at temperatures of up to 180.degree. F. for 4-16 hours, with high shear agitation, as an induction period. The slurry is sent to a plurality of crystallization tanks before it possesses a total solids content exceeding 10% by weight and a crystalline content exceeding 15% by weight of the total solids content. The crystallization tanks are preferably operated in two stages. The first crystallizing stage is held at a temperature of 180.degree.-250.degree. F. for 2-72 hours. The second crystallizing stage is held at a temperature greater than 250.degree. F. for 2-16 hours.
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Dwyer Francis G.
Schwartz Albert B.
Breneman R. Bruce
Doll John
McKillop Alexander J.
Mobil Oil Corporation
Schneller Marina V.
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