Can reduce urea pyrolysis system ammonia structure of SCR deNOx systems SO2SO3 conversion rate

• Main Authors: ZOU YANGJUN, LIU PEIQI, ZHENG WENGUANG, HE SHENG, LI QIANKUN
• Format: Patent
• Language: Chinese; English
• Published: 12.01.2018
• Subjects: AMMONIA; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS THEREOF; CYANOGEN; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

The utility model provides a can reduce urea pyrolysis system ammonia structure of SCR deNOx systems SO2SO3 conversion rate. The atomizing spray gun is installed in the pyrolysis chamber, pyrolysis chamber gas outlet and ammonia injection grid intercommunication, gas gas heater sets up between first floor catalyst and second floor catalyst, and gas gas heater's flue gas entry communicates with each other with first floor catalyst exhanst gas outlet, and the exhanst gas outlet communicates with each other with second floor catalyst flue gas entry, gas gas heater heat exchange medium outlet andpyrolysis chamber gas access intercommunication, heat transferring medium entry and dilution fan export intercommunication, electric heater sets up between gas gas heater heat exchange medium outlet and pyrolysis chamber gas access. The utility model discloses utilize the flue gas waste heat, reduced traditional urea pyrolysis cost, reduced the flue -gas temperature that gets into second floor catalyst, reduced second flo