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

摘要： 气化粗合成气主要成分为CO、CO2、H2，经过变换和重整后在催化剂作用下可以合成不同的化学品。熔融盐可吸收粗合成气中的CO2，并实现H2/CO在1.5～2.9之间调整。熔融盐合成气成份调整过程是一个传质与化学反应同时进行的非平衡、耦合过程。从球体扰流方程和反应动力学方程出发，通过量纲分析推导出合成气组分与操作条件的关系，对固定床内熔融盐对合成气成份调整过程进行了分析。熔融盐合成气成份调整的限制过程为气体从气泡表面向熔融盐内部的传质过程。温度升高、气泡直径减小、停留时间增加有利于合成气中H2百分比增加；然后对模型进行了实验验证，实验结果与理论结果吻合良好。

关键词: 熔融盐, 合成气, 气化, 模型