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Chemical Cleaning

Tank Cleaning

Improve your plant’s safety, financial, and environmental performance.

Bulldozing the tank clean, utilizing manpower, loading and transporting waste materials, for many facilities, the conventional tank cleaning practice is expensive and risky. But with FourQuest Energy offers a chemical tank cleaning methodology that’s changing the industry standard. No crew member enters the tank, no hazardous waste is emitted, and up to 98% of your oil is recovered!

Step 1

Recoverable hydrocarbon extraction

FourQuest personnel blend a hydrocarbon diluent (cutter stock) with the selected chemical additives (FQE® Solvent-H) and establish liquid circulation loops. Sludge deposits, which would otherwise remain as solids for disposal, are liquefied and can be pumped from the tank more efficiently for further processing. The liquid circulation loops are established by the use of standard pumping equipment and through manway and roof-mounted cleaning nozzles that can be directed to any location within the tank.

Step 2

Tank degassing and polishing cleaning

After the hydrocarbon extraction phase is complete, the tank is degassed and cleaned of any nominal hydrocarbons by use of state of the art degassing / decontamination chemistry. These products are non-hazardous water encapsulants which perform to scrub the tank air space of all hydrocarbon vapours and clean the tank interior surfaces of residual oil films.

  • Minimal wastewater is pumped from the tank and processed to separate the residual oils
  • Oils are recovered and wastewater has low chemical oxygen demand numbers
  • Tank is now completely gas free: any solids that remain can be removed by using vacuum methods, minimizing labour involvement

FourQuest Energy’s proprietary tank cleaning process enables you to clean your tanks chemically in a closed loop environment. First, we custom engineer a solution that liquefies the sludge deposits in your tank that would typically be removed mechanically. Then we blend the solution with a cutter stock and extract the content using standard circulation processes. Lastly, the tank is degassed and polished chemically, achieving a superior level of surface and air cleanliness. And it’s all done without the entry of people or the exit of contaminated waste.

The Result?

  • Less exposure to safety risk
  • Lower project costs
  • Recovered hydrocarbons
  • Less environmental harm

Improve Safety Performance

Our chemical tank cleaning methodology doesn’t require personnel to enter the tank; all work is performed in a closed loop system. Our chemicals are the only thing that works inside. Plus, all of the hazardous materials are flushed out of the tank without people being exposed to them.

Typical sludge-reduction tank cleaning operation

Tank Cleaning

Improve financial performance

This methodology can create millions of dollars’ worth of financial value plant wide. It’s a significant change in the way the world’s most efficient facilities will deal with tank management.

This financial performance is achieved in three ways:

The disposal of hazardous waste from your tank can cost between two and four times as much as the actual cleaning of it! Hazardous waste disposal is one of the industry’s most costly burdens, and the fees and potential fines grow increasingly more expensive. Packaging. Transportation. Storage. Then the disposal itself. It really adds up.

With our chemical tank cleaning process, organic solids are dissolved inside the tank, letting you avoid expensive hazardous waste disposal expenses. Only non-hazardous materials are left. And with those costs relatively attractive, you’ve just eliminated one of the largest financial tank cleaning burdens.

When you’re facing a narrow turnaround window, our tank cleaning process can be faster than other conventional methodologies, and unlike conventional people-intensive processes, our chemicals and equipment can work 24 hours a day, nonstop. It’s a process that conforms comfortably to even the most heated emergency outage deadline and can be executed with relatively little notice.

With conventional methodologies, solid organic waste inside the tank is disposed of with great effort and financial loss. Our tank cleaning process actually lets you recover over 98% of the oil that is present in your tank when it’s cleaned! Whether you burn the recovered product in a boiler or turn it into salable product, our methodology lets you recover this overlooked resource and tremendous value opportunity.

Improve environmental performance

Our advanced chemical tank cleaning process also minimizes waste, leaving only insoluble, non-hazardous materials for disposal. No more reporting tank hazardous waste disposal to your environmental regulatory agency. No more digging up contaminated soil around the tank. Reduce your hazardous volume on a massive scale.

Want to protect your crew, save money, and improve your unit’s environmental performance? Contact us today to learn more about our chemical tank cleaning process.

Request More Information

Looking for more information on this service line? Use the form to the right to be contacted by a member of our Technical Sales Team. For additional information like brochures and case histories, visit our Resource Library