Screen mesh's wear-corrosion resistances against fly ash and the loss of pressure drop caused by screen can affect the stable and safe operation of the interceptor filter system

and then affect safe operation of catalyst layers in the SCR denitration system.To investigate the effect of fly ash concentration on erosion wear of the screen mesh and the flow resistance characteristics of the screen mesh

cold state experimental platform was established to carry out experiments about the wear resistance of the 316

316Land2Cr13 stainless steel meshes under conditions with different ash concentrations.By unary linear regression method

empirical correlation formulas between wear rate and ash concentration for meshes made of different material stainless steels were obtained through fitting.Moreover

the flow resistance pressure drop caused by two different angles of 316 L mesh have been determined experimentally under conditions with different large particle ash concentrations and flow velocities.The experimental results show that

the concentration coefficients of the three meshes in the fitting equations is all between 1.006 7and 1.116 9.Among the 316

316 Land 2Cr13stainless steel mesh

the 2Cr13 material has the best wear resistance performance while the 316 Lmaterial has the worst

the 316 material is somewhere in the middle.The flow resistance pressure drop of the screen mesh tends to be balance with the extension of time

and with the increase of concentration

the time needed for balance is reduced under conditions with the same flow velocity.The experimental channel of flow performance installing 90°screen mesh is better than that installing60°screen mesh under the same condition.The study results can provide research basis and theoretical reference for interception filter design and type selection of the SCR denitration system.