气流床煤气化条件下煤(焦)气化反应性评价

摘要

为了寻求适用于气流床煤气化条件的气化反应性评价方法,利用自行设计的接近现代煤气化环境的气化装置提出了一个评价煤(焦)的气化反应性的指数HPO,通过1组典型的煤(焦)样品在该装置上的气化试验数据对比,验证HPO对煤(焦)气化反应性的表征效果.结果表明:利用气化后CO2浓度或CO2还原率α不能准确评价煤(焦)的气化反应性,而HPO值可以避免可气化组分含量的干扰,在接近现代煤气化工艺条件下快速并较为准确地评价煤(焦)的气化反应性.%In order to establish a method for evaluating gasification reactivity suitable for entrained flow gasification,an index,HPO,is proposed with the aid of a gasification apparatus similar to the modern coal gasification process.The validity of HPO on the gasification reactivity of coal/char was verified according to the gasification experimental data of the typical coal/char samples.The results show that the CO2 concentration after gasification or/and CO2 reduction ratio are not capable of evaluating the gasification activity of coal/char accurately;whereas the HPO can avoid interference from gasifiable components and quickly and accurately assess the coal/char's gasification reactivity under entrained flow condition.