EnvTech, Inc. – Smart Solutions for Refinery Challenges Since 1991, EnvTech has provided chemical cleaning services to prepare process equipment for turnaround maintenance. In recent years, we‘ve developed several new chemical technologies to make chemical cleaning more efficient and safer for personnel and the environment. We have developed innovative products and techniques for cleaning many types of refining and petrochemical process equipment, including: • Crude, Vacuum and other Heavy Oil Units • FCC Units • HF & Sulfuric Alkylation Units • Coker and Flexicoker Units • Sulfur Recovery and Amine Units • Cooling Water Systems