Marsulex Environmental Technologies Corp. (MET), Lebanon, Penn., reports that it has been granted two new U.S. patents, building upon its ammonium sulfate flue gas desulfurization (AS FGD) technology. It said the new patents represent enhanced processes for the removal of acidic gases from emission sources and the generation of multiple high-value byproducts.
The first new MET patent is directed at the expanded use of ammonia as the reagent by a simple and cost-effective method of removing hydrogen sulfide and mercaptans from various ammonia sources. The gaseous hydrogen sulfide and mercaptans are stripped and collected, preventing the gases from being released into the atmosphere. The invention delivers a process that enables users to avoid potentially expensive ammonia purification systems for the removal of hydrogen sulfide and mercaptans.
Additionally, MET was granted a patent for a process that further enriches the AS FGD system, in which additional saleable byproducts are generated. From this new invention, multiple saleable fertilizers are produced, as well as a chloride solution or solid for various beneficial applications.
“We are excited by both of these advancements that will assist a broader expansion of the AS FGD technology to the industrial and global markets,” said Amy Evans, MET’s Director of Technology.
MET said its technologies are successfully installed in over 22 countries across the globe, and consistently meet or exceed clients’ regulatory requirements.