Expert insights into the catalytic emission control industry

Informative articles from the experts in catalytic emission control technology.

Check back frequently or subscribe.
Advanced Class Gas Turbine SCR and CO Catalyst System Operating Challenges

Advanced Class Gas Turbine SCR and CO Catalyst System Operating Challenges

One of the tradeoffs for the higher efficiency of new advanced class gas turbines (namely the G-, H-, and J-class machines) is increased thermal NOx make, which is caused by higher firing temperatures in the gas turbine combustors. The result is GT exit NOx concentrations

Read More
Combined Cycle Journal: “Consider the impact of new operating regimes on your SCR”

Combined Cycle Journal: “Consider the impact of new operating regimes on your SCR”

Incorporating real world operating data analysis into your SCR management plan is a topic that is gaining some well-deserved traction within the power industry. Combined Cycle Journal posted an article on November 8th, 2017 highlighting Environex Senior Engineer Andrew

Read More
What is Selective Catalytic Reduction (SCR) Catalyst?

What is Selective Catalytic Reduction (SCR) Catalyst?

Selective catalytic reduction is a catalytic reaction which uses ammonia to reduce oxides of nitrogen (NOx) into harmless nitrogen (N2) and water. Because of this function, the SCR catalyst is sometimes referred to as a NOx catalyst in the industry. It has been used in many

Read More
Why should I test multiple SCR samples?

Why should I test multiple SCR samples?

In the real operating environment of an SCR catalyst, exhaust gas temperatures, flows, and other factors vary across the catalyst cross-section. These differences cause non-uniform wear and tear on the catalyst. Uncontrolled thermal events and poisons entrained in the

Read More
What is NOx?

What is NOx?

NOx is short for oxides of Nitrogen. It is a class of pollutants which includes nitrogen oxide (NO), nitrogen dioxide (NO2), and nitrous oxide (N2O). When emitted into the atmosphere, they can cause an array of problems, including acute and chronic health problems and smog.

Read More