Method for rapidly identifying aging degree of SCR (Selective Catalytic Reduction) catalyst through accelerated aging test

The invention relates to a method for rapidly identifying the aging degree of an SCR (Selective Catalytic Reduction) catalyst through an accelerated aging test. According to the method, the number of strong acid sites is taken as a penetration point, the aging degree of the SCR catalyst is quantitatively evaluated, and the SCR catalyst subjected to exhaust aging is associated with accelerated aging in a laboratory. The concept of aging critical temperature is put forward, the aging effect caused by exhaust when the temperature is lower than the temperature is ignored, and meanwhile it is avoided that the laboratory accelerated aging temperature is higher than the catalyst performance collapse point. An accelerated aging time acceleration ratio model is established in a computer environment, and laboratory accelerated aging time required by an SCR catalyst under different exhaust conditions can be calculated based on the model. According to the method, the SCR catalyst is accelerated to age in a laboratory env