A PROCESS FOR THE ELIMINATION OF VOLATILE ORGANIC COMPOUNDS AND HAZARDOUS AIR POLLUTANTS IN AMMONIA PLANTS

摘要

In a new process for the removal of volatile organic compounds (VOCs) and harmful air pollutants (HAPs) formed as byproducts in shift sections of ammonia plants, shift sections and CO₂From the discharge line located downstream of the removal section, carbon dioxide (CO₂) Is recycled to the primary reformer of the ammonia plant. In this way, the oxygen compounds contained in the carbon dioxide exhaust are decomposed in the primary reformer burner, resulting in a significant reduction in the total emissions of VOCs and HAPs.