Recent Advances and Current Status of the Characteristic of Deposits on Heating Surfaces from Heating Biomass-fired Boiler

Abstract

Biomass direct combustion for electricity is the most widely applied and developed biomass conversion and utilization technology, but due to the high content of alkali metals, it will cause deposition and high temperature corrosion of heating surfaces in boiler during biomass combustion, thus reduces the efficiency and influences the long-time safe operation of the boiler. Alkali metals problem especially deposition and high temperature corrosion is urgently need to be solved. A review of literature indicates ash deposition and high temperature corrosion of heating surfaces in biomass-fired boilers, combined engineering practice with experimental study, explored the mechanism of deposition build-up and high temperature.