Gas-steam combined cycle unit SCR (Selective Catalytic Reduction) denitration urea pyrolysis ammonia production system

• Main Authors: YUE PUJIE, BAI YUYONG, JING YACHAO, GAO PAN, MENG LEI, SHIN JIN, ZHANG GUOZHU, DU MINGSHENG
• Format: Patent
• Language: Chinese; English
• Published: 13.09.2022
• Subjects: AMMONIA; BLASTING; CHEMISTRY; COMBUSTION APPARATUS; COMBUSTION PROCESSES; COMPOUNDS THEREOF; CYANOGEN; FLUES; HEATING; INORGANIC CHEMISTRY; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES; SEPARATION; TRANSPORTING; WEAPONS

The invention relates to the technical field of SCR (Selective Catalytic Reduction) denitration, in particular to an SCR denitration urea pyrolysis ammonia production system of a gas-steam combined cycle unit. Comprising a high-temperature flue gas extraction flue, the high-temperature flue gas extraction flue is located at an exhaust outlet of a gas turbine, a high-temperature induced draft fan used for extracting high-temperature flue gas is arranged on the high-temperature flue gas extraction flue, the high-temperature induced draft fan is connected with a pyrolyzing furnace through a main gas inlet flue, and the main gas inlet flue is connected with a branch in parallel, an auxiliary electric heater is arranged on the electric heating bypass flue; a pyrolyzing furnace top cyclone gas inlet and a pyrolyzing furnace bottom cyclone gas inlet are respectively formed in the top and the bottom of the pyrolyzing furnace, so that gas is strongly rotated after entering the pyrolyzing furnace. The continuous and st