REMOVAL_1996 - Laserfiche WebLink

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07/17/1994 01:28 3109875=:3J T'S TEC-I F4H t? TPS TECHNOLOGIES INC. FROCE55 FLOW DE _.QRIPTIN Petroleum contaminated soil is fed into the cold feed storage system via a loader. 'f his soil then empties from the bottom of the hopper onto a conveyor ;system that passes across a weighing system to track and record the ongoing tons of sail being fed to the plant. The soil next enters the rotary dryer drum in the opposite end from, the primary Hauck burner. As the drum rotates, the soil travels forward toward the burner as a function of the drum's angle with reference to level. The specially designed fl ghting within the internal diameter of the drum, moves the soil constardy forward. Heat transfer takes place from the primary burner as a function of soil moisture, drum rotation speed, drum angle and primary burner output, These variables are changed to meet the local area "_I=an soil" standards. Once the soi! comes to the end of the dryer drum, it is forced to exit into a mixing discharge pugmiil (soil conditioner) where it is injected with clean water This water controls the dust and allows the soil to become compactible again. Typical moisture contents end up around 10% - 15%. After exiting the pugmill, the dirt falls through a short vertical chute onto a conveyor where it is stacked up for sampling and removal for re-use. Since this system Is a counter flow heat exchanger, the gases and airborne dus: generated from the evaporation of the water and petroleum contaminatio-, in the soil, along with the ensuing dust created from the turbulent vetting, fiow out the opposite end of the dryer drum into a vertical cycl:,ne. Once in the cyclone, the large- dust particles are centrifuged out of the gas stream. These particles fall to the bottom of the cyclore where they are augered back into the discharge end of the dryer drun'i. Once in the drum, they are re-mixed with the cleaned dirt, heated bark up to the dart temperature and exit the drum with the dirt into the discharge pugmill. The water vapor, remaining dust particulate and volatile organic compounds !VOCs) pass out of the cyclone and into the oxidizer where the VOCs ora ompletely combusted at a minimum of 1450°F for 1 .5 seconds.