William Franklin Priebe, 777450 Stonebrook Pkwy APT 3305, Frisco, TX 75034

4548525, Oct 22, 1985

Dec 13, 1982

6/449020

William F. Priebe - Carrollton TX

Atlantic Richfield Company - Los Angeles CA

E02B 1300
E21B 2106
B63H 106

405 52

An aqueous slurry of spent drilling mud and/or produced water is diluted prior to free discharge into a body of receiving water by expelling a jet stream of such slurry into an open-ended submerged mixing conduit. The jet stream aspirates and entrains the surrounding water within the conduit and is then passed through a mixer stage prior to exiting the opposite end of the tube.

4036664, Jul 19, 1977

May 2, 1975

5/573978

William F. Priebe - Irving TX

Frito-Lay, Inc. - Dallas TX

C13L 100

127 69

Process for concentrating starch contained in very dilute, aqueous mixtures having, for example, a starch content of less than about 1 weight percent. The concentrated product is obtained as an aqueous mixture containing starch solids in the amount of at least about 30 weight percent, preferably about 35 to 50 weight percent. The concentrating operation involves the sequential use of a gravity settling technique, especially lamellar plate settling, to increase the starch content of the solid-liquid mixture to about 5 to 20 weight percent. This mixture can be readily removed from the settler, and further concentrated centrifugally, e. g. , in a liquid cyclone, by a factor of at least about 2 to provide the desired aqueous mixture having a concentration of at least about 30 weight percent of starch solids. The latter stream can be readily and effectively handled and treated to recover relatively pure, essentially solid, food grade starch of low moisture content, e. g. , less than about 10 weight percent.