We have developed the safest and most efficient process available for heavy oil units (HOU) based upon a wide variety of applications (liquid-phase, vapor-phase or combination-phase).

The vast majority of EnvTech chemical cleanings are completed within 48 hours. All chemicals involved are completely non-flammable, non-corrosive, non-hazardous, and environmentally friendly.

When the cleaning process is finished, the unit is ready for maintenance, including entry permits and hot-work permits, with no additional preparation or additional time wasted.

The EnvTech process is built on a foundation of knowledge, skills, and chemicals that collectively bring every project to successful completion.

EnvTech’s proprietary ETI Cleaning & Gas-Freeing Solution™ utilizes a strong buffer system in combination with appropriate chelants and surfactant in order to: neutralize polythionic acids on contact, dissolve all scales found in nearly any refinery process unit, and emulsify any hydrocarbon residue contained in a system.  The mixture also renders pyrophoric substances inactive and has proven excellent for polymer removal.  Additionally, Benzene and other regulated air contaminants have been absent from the vapor spaces of vessels opened after these cleanings.

ETI Cleaning & Gas Freeing Solution™ is effective, non-toxic, non-flammable, non-hazardous, and non-corrosive.  It does not make stable emulsions. Any emulsified hydrocarbons can be recovered in the refinery’s API separator and in most locations the solution can be drained directly to the plant sewer with no ill effect on the wastewater treatment plant.  Thus, ETI Cleaning & Gas-Freeing Solution™ not only saves valuable time, but also virtually eliminates waste disposal costs.