Directly using the results of Shi Huancong's North American work (U.S. patent), a continuous catalytic CO2 absorption-desorption device was established, and the entire gas-liquid absorption-desorption device was optimized using chemical reagents and catalytic packed towers that were debugged and optimized. -Work optimization. Carry out low-energy and low-cost CO2 absorption and reduce carbon emissions. The overall device operating data can be fully monitored by the process control system. Adopting the latest online equipment diagnosis and cloud data analysis technology, the overall device can be operated around the clock, strong stability, simple maintenance, and highly agile, and finally forming a market-competitive integrated environmental protection system solution, which is convenient for large-scale use and product promotion. Use the combined technology of integrated denitrification and decarbonization to achieve emission control of pollutants NOx, nitrosamines and CO2. Achieve the government's goals of energy conservation and emission reduction, low-carbon environmental protection, and vigorously reduce pollutant emissions.