June 2007

Special Report: Process/Plant Optimization

Cutting-edge methods convert waste into salable products

Innovative pretreatment process removes hazardous contaminants from ethylene production-generated spent caustic

Jorge, L. M., COPESUL; Kurukchi, S., Shaw stone & Webster; Sidoruk, D., Aracruz Celulose S.A.

Petrochemical facilities are faced with environmental regulations on local, national and global levels. The need for cleaner production technologies and reducing and reusing waste is the driver to develop innovative and cost-effective technologies that help preserve the environment. In ethylene production, feedstocks are thermally cracked in furnaces to produce olefin monomers—the building block material for the petrochemical industry. Also associated with the olefin-cracking process, a hazardous waste—spent caustic stream—is generated. An innovative new technology can remove essentially all of the hazardous organic contaminants from the spent caustic before disposal or reuse

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