Simulation Research on Filtration of High Temperature Dusty Gas Based on Foam Ceramic Material

Abstract

The simulation test device of filtration for high temperature dusty gas was established based on rotating foam ceramic material. The influence of performance parameter of foam ceramic on collection efficiency, concentration of dust emission, dedusting precision and pressure loss were researched under room temperature condition. The results are shown as following: the smaller the aperture of foam ceramics is, the higher filter efficiency, the overall collection efficiency and filter precision are with lower emission concentration of dust and higher gas pressure loss of dedusting system; about 95% of dust particles which is one twenty-sixth more than the aperture of the filter can be filtered by foam ceramic; increasing the thickness is effective ways to improve the filter efficiency at the expense of much increasing gas filtering resistance of dedusting system; with the increasing of foam ceramic aperture-gradient, gas filtering resistance reduces remarkably at the expense of slight reduction of filter efficiency and a little increase of the concentration of dust emission.

Experimental Study on Spray Materials at Low Temperature

“…Particularly in the area of coal mining, shotcreting material is of important significance. Traditional spray material in the main component of cement of Portland cement, poor cohesion when in actual use, early strength low strength increased shrinkage cracking resistance of slow, poor shortcomings [1]. Due to cement of condensation hardening by environment temperature effect is large, in winter temperature 5 ℃ following, General cement condensation hardening time more long, strength rose more slow, for this a shortcomings, this experimental with double fast cement and cement plus agent for main raw materials for slurry experimental ratio, configuration out condensation speed fast, strength rose fast, viscosity poly sexual strong, waterproof, and anti-crack, and dry shrink sexual small and flexible high meet site construction requirements and economic of high performance spray material.…”