System and method for evaluating sulfur dioxide loss rate of CEMS pretreatment device

The invention provides a system and a method for evaluating the sulfur dioxide loss rate of a CEMS (continuous emission monitoring system) pretreatment device, belongs to the technical field of gas detection, and aims to solve the problems that the performance of the CEMS pretreatment device has obvious influence on the monitoring result of pollutant emission, and although the industrial standard stipulates the sulfur dioxide component loss rate of a condensation pretreatment device, the performance of the CEMS pretreatment device has no obvious influence. However, no corresponding evaluation method exists at present. By analyzing reasons of the sulfur dioxide component loss rate of the condensation pretreatment device, it is found that the loss rate cannot be obtained through theoretical calculation, so that an evaluation scheme of the sulfur dioxide loss rate of the CEMS pretreatment device is provided, an evaluation method and key factors influencing an evaluation result are introduced, and thoughts are pr