Texas Army National Guard
In October 1992, the Texas Army National Guard purchased four SRS-50 solvent distillation units for $14,995 per unit from Solvent Recovery Systems, Inc.. The units were placed in operation in January of 1993.
The SRS-50 is designed to recycle 50 gallons of solvent in an 8 hour period. Depending upon the boiling point (recycles up to 500 degrees) and contamination of the solvent, recovery rate can reach up to 125 gallons in a 12-16 hour period. The unit is equipped with a vacuum pump assembly. The vacuum assisted process maintains a continuous flow, accelerates production of recycled product, and lowers the distillation temperature of the solvent. Some of the positive features include stainless steel construction, explosion proof circuitry, pressure release valves, and automatic shut-off features. The continuous operation function allows the machine to siphon from the contaminated drum into a clean drum for recycled solvents. A training tape explaining how to operate the unit was made for the Texas Army National Guard. Co-mingled solvents with different boiling points have caused the distiller to recycle only one solvent. The distiller is used to recycle one solvent at a time since commingled solvents with different boiling points may cause some difficulties.
Since 1993, over 10,000 gallons of solvent have been recycled for reuse.
Details of Reductions
Additional Information :
The four units now cost $22,500 each (total of $90,000). Disposal of hazardous solvent would have cost $72,500 and purchase of new solvent would have been $91,400. The break even point is after processing approximately 1,400 gallons of solvent per unit. The unit does require maintenance people to continuously monitor its operation.