An accelerated simulation test apparatus for evaluating elevated temperature erosion-corrosion behaviour of iron and steel in gas-solid flows

This paper introduces an accelerated simulating test apparatus for evaluating high temperature erosion-corrosion behaviour of iron and steel in gas-solid flows. This device is designed to investigate the high-temperature erosion-corrosion properties of materials and to optimise anti-erosion-corrosion measures for iron and steel parts. It simulates the working conditions of the pipes in an economiser. We have shortened the test duration by increasing the density of abrasive particles in the fluids. The test set up is composed of six main parts, including the blowing system, heating system, feeder/mixer, erosion-corrosion chamber, and loading system, the cooling system, and the control system. Four years' operation has shown that the repeatability for the experimental results is good. The SEMs of the worn surfaces of both specimens and actual pipes in the economiser show that they are consistent with each other. Four years' operation has shown that the test apparatus is characterised by reliability and good simulation ability. Both practical and theoretical research work can be done with this device.