The purpose of this work is to understand the semi-coke explosion issues and to improve the safety in semi-coke injection. It shows that the higher pyrolysis upgrading temperature is, the lower explosibility of semi-coke powder has. The effects of pore structure and functional groups on explosive properties are evaluated in detail. The surface area is determined to be at least as important as the volatile matter while the volatile matter content is more than 40.7%. The impact of surface area on explosibility is relatively small while the volatile matter content is less than 31.7%. The explosibility of the sample will show a correlation with combustibility when the comprehensive combustion index is in the range of 7.63 × 10⁻¹⁴–8.62 × 10⁻¹⁴. Content of the oxygen-containing functional groups or the carboxyl and ether bond can all reflect the semi-coke/raw coal explosibility accurately to some degree, and the relative content of carboxyl and ether bond is more closely related to the length of return fire.

这项工作的目的是了解半焦炭爆炸问题并提高半焦炭喷射的安全性。结果表明，高温分解温度越高，半焦粉的爆炸性越低。详细评估了孔结构和官能团对炸药性能的影响。表面积被确定为至少与挥发物一样重要，而挥发物含量大于40.7％。表面积对爆炸性的影响相对较小，而挥发物含量小于31.7％。当综合燃烧指数在7.63×10 ^-14 –8.62×10 ^-14范围内时，样品的爆炸性将与可燃性相关。。含氧官能团或羧基和醚键的含量都可以在一定程度上准确反映半焦/生煤的爆炸性，而羧基和醚键的相对含量与回火的时间更密切相关。