Improvement Of Fuzzy Comprehensive Evaluation And Its Application In Optimization Of Biogas Desulfurization

Biogas,as one of the most important biogas,has been attached great importance in the world.Large biogas projects can fully realize the reduction,harmless and resource of waste.Although the byproduct H2S content of biogas project is small,it does great harm,so biogas desulfurization becomes an essential link in biogas project.With the rapid development of industry,gas pollution has caused serious environmental problems.From the perspective of environmental interests,more and more fields need to desulfurate the discharged gas,but the requirements of different fields of operation on desulfurization process are significantly different,so the selection of different fields of operation on desulfurization process is particularly important.In order to select the desulfurization process methods suitable for their own fields,enterprises in many fields evaluate various desulfurization process methods to select the best desulfurization process methods.There are many methods to optimize the desulfurization process methods,including AHP,fuzzy comprehensive evaluation method,etc.,but the requirements of different fields are different.How to combine the large ring of their own fields Therefore,it has become an urgent problem to select appropriate methods to optimize a variety of desulfurization processes,so as to determine the desulfurization process suitable for their own fields.In this paper,first of all,a variety of comprehensive evaluation methods are analyzed and studied in detail.Finally,the subjective and objective weight is combined to get the combined weight,so as to improve the singleness of weight determination of traditional fuzzy comprehensive evaluation methods.Then the desulfurization process is improved A set of scientific and reasonable evaluation index system was established,and three alternative schemes of biogas desulfurization in Anhui Shanying paper mill were evaluated by improved fuzzy comprehensive evaluation method.The results show that the biological+wet desulfurization method is more suitable for the biogas desulfurization project of Anhui Shanying paper mill.Finally,considering that some indexes in the fuzzy comprehensive evaluation method are dynamic,we should consider the influence of time factor on them,so combining with the theory of dynamic fuzzy set,this paper extends the fuzzy comprehensive evaluation method to the dynamic fuzzy comprehensive evaluation method,and then evaluates the optimization of desulfurization process for the biogas desulfurization project of Anhui Shanying paper mill The result is consistent with that of fuzzy comprehensive evaluation.This not only verifies the feasibility and rationality of the above methods,but also makes the whole evaluation process more rigorous and scientific.