Oxy Petrochemicals, Inc.
Acid gases, such as carbon dioxide are produced as by-products of ethylene production. These gases are removed by caustic scrubbing to ensure product quality. The spent caustic is a hazardous waste. It is disposed by deep-well injection in accordance with state and federal permits.
A facility "Quality Team" made up of representatives of a wide cross-section of employees began reviewing the caustic scrubbing system in mid-1991. The system's operations were monitored and statistically analyzed. Several operational and design changes were recommended and implemented during the first half of 1992.
Source reduction was achieved by lowering the scrubber system's caustic waste stream and the quantity that was deep-well injected by 75% of the 1987 level.
Details of Reductions
Additional Information :
Return on investment for this project was 58%.