Frequently Asked Questions

What is a VOC?

Volatile Organic Compounds (VOCs) are gaseous emissions from thousands of different solids or liquid chemicals found in solvents, coatings, inks, adhesives, and consumer products.

What is Destruction Removal Efficiency (DRE)?

Destruction removal efficiency is the measurement of reduced pollutants from the inlet process stream as a result of some emission control technology. Typical regenerative thermal oxidation (RTO) DRE is 95% to 99% and is dependent upon design criteria including chamber temperature, mixing, time, inlet VOC concentration and type. Regenerative catalytic oxidation DRE ranges from 90% to 99% depending on the application.

How do I choose a VOC control technology?

Choosing the right VOC control technology requires the consideration of several factors including, permit regulations, flow rate of the gas stream, concentration of VOC, and the properties of the VOCs. Colt Technologies, Inc. has experience in a variety of VOC control applications. Contact us today to discuss the details of your unique requirements.

What is a RTO and RCO?

A Regenerative Thermal Oxidizer (RTO) and a Regenerative Catalytic Oxidizer (RCO) are two thermal oxidation technologies used to control various industrial emissions. Both use oxygen, heat and time to convert hazardous emissions into non-hazardous by-products. A RCO uses a precious metal-based catalyst that must be replaced periodically adding to the long-term cost of the system.

What is the difference between Regenerative and Recuperative Oxidizers?

A Regenerative Oxidizer and Recuperative Oxidizer employ different methods of heat recovery in the system. Regenerative Oxidizers pass hot exhaust gas and cooler inlet gas through one or more fixed heat exchanger beds containing ceramic media. Recuperative Oxidizers pass hot exhaust through an air-to-air heat exchanger to heat the cooler inlet gas.

What is the typical RTO thermal efficiency?

Regenerative thermal oxidizers use various amounts, sizes and shapes of ceramic media to help control the thermal efficiency of the system. The desired thermal efficiency can range from 80% up to 97% depending on the abatement application and concentration of pollutants in the inlet air stream. Higher thermal efficiency requires less of the secondary fuel source like natural gas - the first being VOC - for oxidation and thus can often reduce operating costs.

What questions do you have?

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