Abstract
For the characteristics of filter material and structure the dual-layer granular bed filter itself possesses, it can solve the two main problems of pulverization of sorbent and non-uniform contact between solid and gas other reactors may have. To investigate the desulphurization properties of sorbent on the dual-layer granular bed filter, this paper made kinds of experiments to analyze factors affecting the reaction. Although increasing the rate of Fe/S can make the H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> S react fully, at the same time, the pressure drop of dual-layer granular bed filter becomes greater and results indicate that Fe/S of 4:3 is enough to ensure the full use of sorbent. Moreover, factors of temperature, water vapor content, inlet concentration of H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> S and so on also have favorable or adverse effects on desulphurization process and then , influencing the desulphurization efficiency.
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