NOx Abatement

NOx Overview

Nitrogen Oxides, collectively refers to the combustion byproducts:
NO - Nitrous Oxide
NO2 - Nitrogen Dioxide.

In stationary source combustion approximately 95% of NOx formed is NO. After NOx leaves the stack, in the presence of sunlight, ozone and VOC’s (Volatile Organic Compounds), it becomes NO2, which appears as a reddish-brown plume (in extreme cases).

Nitrogen oxides are major atmospheric pollutants, which can cause photochemical smog and/or acid rain. These emissions not only do environmental damage, they can damage health and property as well. Acid air pollution has been linked to breathing and lung problems in children and people who have asthma.

NOx Reduction

One of the technologies used to reduce NOx is by using an SCR unit. Selective Catalytic Reduction (SCR) is a post-combustion NOx control technology capable of providing NOx reductions in excess of 90 percent. The SCR process uses a catalyst at approximately 300-405ºC to facilitate a heterogeneous reaction between NOx and an injected reagent to produce nitrogen and water. The following are the most commonly used reagents for the NOx abatement process:
  1. Anhydrous Ammonia.
  2. Ammonia Hydroxide (Aqua Ammonia) 19% - 29%.
  3. Urea - Liquor and dry prills or granular.

Truth Chemical and NOx Abatement

Truth Chemical is extremely conscious of protecting our environment; we do this by supplying all the chemicals needed by our customers using SCR units to reduce their NOx emissions. Truth Chemical can supply all of the above reagents to customers in tank trucks and rail cars.