Liquid purification or separation – With heater or heat exchanger – Flow line connected in series with distinct separator
Patent
1988-05-16
1989-08-22
Spear, Frank
Liquid purification or separation
With heater or heat exchanger
Flow line connected in series with distinct separator
134 10, 209 3, 209 17, 210182, 2101951, 210202, 210259, 210295, 2105121, B01D 2100
Patent
active
048593230
ABSTRACT:
Heavy oil production results in oily sand waste products, the disposal of which presents a problem. Since the oily sand causes rapid wear on heavy oil treatment equipment, it is important to deal with the problem early in the treatment process. For this reason recovery of the bulk of the sand is effected at the so-called free water knockout, which is a tank operating at atmospheric pressure for removing free water and sand from the heavy oil. Sand drops to the bottom of the tank. Oil separates from the water, rises to the top of the tank and overflows to the next piece of treatment equipment. Water is siphoned from the bottom of the tank and fed to a water disposal plant. The apparatus described herein includes a pump for feeding a sand slurry from the bottom of the tank to hydrocyclones, dewatering screens to which fresh water is added to clean the sand and remove additional moisture therefrom, and a hopper for receiving the clean sand. Water from the hydrocyclones is returned to the bottom of the tank, and water from the screen is pumped into the sand at the bottom of the tank to maintain the sand in a slurry.
REFERENCES:
patent: 3208201 (1965-09-01), Oliver, III
patent: 3637522 (1972-01-01), Young
patent: 4336136 (1982-06-01), Giguere
patent: 4350596 (1982-09-01), Kennedy, Jr.
patent: 4358373 (1982-11-01), Jubenville
patent: 4426293 (1984-01-01), Mason et al.
patent: 4636308 (1987-01-01), Summers
patent: 4717470 (1988-01-01), Apeland
patent: 4737282 (1988-04-01), Senyard, Sr. et al.
Drodge Joseph
Dutton, Jr. Harold H.
Spear Frank
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