Research on selection method and software development of low-low temperature electrostatic precipitator
The installed capacity of low-low temperature electrostatic precipitators(LLT-ESP)has exceeded 150 000 MW,which has high dust removal efficiency and efficient SO3 removal effect.Due to the relationship between the performance of electrostatic precipitators and coal,ash composition,flue gas temperature and other factors,there is a problem of difficult selection and design.Due to the relationship between the performance of electrostatic precipitators and multiple factors,such as coal and ash composition,flue gas temperature,etc.,there are difficulties in selection and design.A design software for LLT-ESP selection was developed using Visual Basic language,combining conventional electrostatic precipitator selection technology with the efficiency improvement of low and low temperature electrostatic precipitators.This software can be used to calculate key technical parameters,such as acid dew point,ash sulfur ratio,and apparent approaching speed of the flue gas,and complete the calculation of the inlet flue gas temperature and specific dust collection area of the electrostatic precipitator,and implement the selection and design of low temperature electrostatic precipitators.After practical application,through comparative analysis of 26 engineering cases,92%of the total number of projects with actual operating efficiency greater than the guaranteed efficiency of software selection design,met the needs of practical engineering applications and improved the hit rate of low temperature electrostatic precipitator selection.
electrostatic precipitatorselection designacid dew pointapproaching speedlow-low temperature electrostatic precipitator
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