To explore the feasibility of converting oxy-fuel combustion flue gas into valuable syngas through char gasification process, the reactivity of three types of char (bituminous coal char, biochar, and waste char) were experimentally studied under atmospheric pressure in a fixed-bed reactor. The effects of flue gas flow rate and temperature, CO₂/H₂O/O₂ ratio, char types on the char gasification characteristics were mainly investigated. It was found that when the flue gas temperature is 1200 °C or even higher, no matter which char is used, >90% CO₂ conversion rate can be reached in line with the Boudouard equilibrium. The reactivity of biochar-H₂O is relatively higher than that of waste char-H₂O. Besides, 5% oxygen ratio in CO₂/H₂O mixture is preferred to promote the gasification reaction to some degree. It is important to balance the fixed carbon conversion rate and CO/H₂ yield in syngas to decide the optimum residence time of char. Overall, it is a novel way of CO₂ reduction and waste resources utilization.

为了探讨通过焦炭气化工艺将含氧燃料烟道气转化为有价值的合成气的可行性，在固定床反应器中，在大气压力下对三种类型的焦炭（烟煤焦炭，生物炭和废焦）的反应性进行了实验研究。 。主要研究了烟气流量和温度，CO ₂ / H ₂ O / O ₂比，焦炭类型对焦炭气化特性的影响。已经发现，当烟气温度为1200℃或更高时，无论使用哪种炭，都可以达到布杜尔平衡的＞ 90％的CO ₂转化率。生物炭-H ₂ O的反应性相对高于废炭-H _{2的反应性}O.此外，为了在某​​种程度上促进气化反应，优选CO ₂ / H ₂ O混合物中的氧比率为5％。重要的是平衡合成气中的固定碳转化率和CO / H ₂产量，以决定焦炭的最佳停留时间。总体而言，这是减少CO ₂和浪费资源利用的一种新颖方法。