Aimed to obtain inherently safer chemical reaction path during early phase of chemical process

fuzzy safety assessment is integrated to reaction path synthesis to provide effective method.Indices are selected based on process information in the reaction path synthesis phase.Through setting membership function of each index

establishing fuzzy inference system

and determining the weighting vector by AHP

the fuzzy assessment method is proposed.To eliminate the impact of medium variable

the fuzzy inference system of single input variable and double input variables are provided respectively.Integrating the method to reaction path synthesis

the benign reaction path will be obtained through material screening rules

fuzzy safety assessment

and optimization treating safety as objective function.By analyzing the application of reaction path synthesis for carbaryl production

reaction paths with their objective function value is obtained.The results for two kinds of fuzzy system are compared finally.