关键词: 熔融盐, 合成气, 气化, 模型

Abstract: Raw syngas mainly contain H2, CO, CO2, Different chemicals may be synthesized after it be sifting and upgrading. Melton salts has the ablity of absorbing CO2 and adjusting H2/CO. The experiments shows that H2/CO could adjust between 1.5～2.9, and there is nearly no CO2 in syngas after been treated with melton salts. The process of syngas composition adjustment using melton salts was non-equilibrium and coupling process. Relations between syngas composition and operation conditions were got from sphere flow equation and chemical reaction dynamics by means of dimensional analysis. The rate limiting step syngas composition adjustment using melton salts was mass transfer between bubble surface and melton salts. Temperature and liquid height have a greater impact on syngas composition, while bubble diameter has less impact. Percent composition of H2 could be increased by raising the temperature, reducing bubble diameter and increasing residence time. The modal was then Verified by experiment, experiment datum and the modal agreed well.

Key words: molten salts, syngas;gasification;model