Structure Design of a New Type of SCR Reactor for Coal-fired Power Plants
At present,selective catalytic reduction(SCR)is widely used for flue gas denitration in coal-fired power plants.SCR reactor is the main equipment for flue gas denitration treatment,and its design scheme directly affects the flue gas denitration performance.The SCR reactor is subjected to various loads and effects during operation,and the conventional design usually adopts a conservative frame form,which has limitations in material utilization and stress performance.In order to achieve high-performance design of SCR reactor structure,the stress characteristics and structural scheme were studied,and the key technical solutions such as structural spatial layout and section optimization,structural stiffness improvement,thermal stress and expansion deformation control,internal pressure control,and ash deposition prevention measures were formed.A new type of SCR reactor structure was designed.Results show that,the new type of SCR reactor structure is reasonably arranged,the height of the catalyst layer beam can be reduced by about 50%,and the total steel consumption can be saved by about 20%.At the same time,finite element simulation analysis shows that the structure has good stress performance and safety performance.The new type of SCR reactor has been applied in many projects,effectively controlling the nitrogen oxides(NOx)emission from power plants and generating significant benefits.
coal-fired power plantdenitrationSCR reactorstructure designfinite element simulation
万方数据
维普
