Coal, coke, and semi-coke are currently irreplaceable materials in the iron and steel industry. Coal is converted to coke or semi-coke in fixed bed coke-ovens which have many drawbacks and cause environmental damage. A novel method for the production of semi-coke using circulating fluidized bed partial coal gasification is experimentally studied. The method involves a fast devolatilization stage which promises to reduce the effect on the environment compared to conventional coke-ovens. Experiments are conducted with high volatile Shubarkol coal in a custom-made atmospheric reactor consisting of a riser, a cyclone, a loop seal, and equipped with a semi-coke withdrawal system. The reactor is operated autothermally, at temperatures varying from 700°C to 1000°C. The coal feed rate varies from 40 to 70 kg/h, with a particle size distribution up to 20 mm. During the experiments, char samples are withdrawn from the riser and the standpipe. The samples have a volatile content of 3-6%, carbon content above 85%, high structural strength (92.64%), low bulk density (270 kg/m³) and high porosity (28.4%) compared to conventionally produced semi-coke. It is confirmed that even using the laboratory scale setup it is possible to produce up to 0.367 kg of semi-coke per kg of coal.

煤炭，焦炭和半焦炭目前是钢铁工业中不可替代的材料。煤在固定床焦炉中被转化为焦炭或半焦炭，这具有许多缺点并造成环境破坏。实验研究了利用循环流化床部分煤气化生产半焦的新方法。该方法涉及快速脱挥发分阶段，与常规焦炉相比，该阶段有望减少对环境的影响。使用高挥发性Shubarkol煤在定制的常压反应器中进行实验，该反应器由立管，旋风分离器，环形密封件和半焦抽出系统组成。反应器在700°C至1000°C的温度范围内自热运行。给煤速度从40到70公斤/小时不等，粒径分布可达20毫米。在实验过程中，炭样品从立管和竖管中取出。样品的挥发物含量为3-6％，碳含量高于85％，结构强度高（92.64％），堆积密度低（270 kg / m）³）和与常规生产的半焦相比高的孔隙率（28.4％）。可以肯定的是，即使使用实验室规模的装置，每千克煤最多可以生产0.367千克半焦。