Recently, the energy-saving and environmentally-friendly upgrade device for the recycling and utilization of ammonia-containing waste gas was successfully put into operation in our company. This energy-saving and environmental protection upgrade project can treat ammonia-containing waste gas, digest dilute acid (21% dilute hydrochloric acid), and by-product ammonium chloride, reduce the total amount of NOx emitted by the three-gas boiler combustion, and realize waste gas recycling and energy saving, economic and environmental protection The goal is consistent with the national environmental protection concept, while achieving better social and economic benefits. This is another move of our company to actively practice ecological environmental protection and social responsibility and lead the direction of industry technology development.