The effect of CaO-MgCO₃ additives on the combustion property of semi-coke (SC) was investigated using thermogravimetric analysis. Based on the experimental results, the addition of CaO (Ca/S = 2) on SC could reduce the ignition temperature (about 1.3 °C) and burnout temperature (about 0.99 °C). Besides, the additive of CaO on SC had significantly decreased the emissions of SO₂ and NO_x. However, the addition of 1 wt% MgCO₃ on SC-CaO could promote the burning process and remarkably reduce the ignition temperature (about 10 °C) and burnout temperature (about 8.64 °C). Moreover, the smallest activation energy was available for the combustion of SC-CaO-1 wt% MgCO₃. On the other hand, the addition of MgCO₃ with different content (0.5 wt%, 1 wt%, 2 wt%, 4 wt%) on SC-CaO could enhance the pore size of CaO, promote the sulfur fixation performance. Comparing with other SC-CaO-MgCO₃ samples, the addition of appropriate amount of MgCO₃ (1 wt%) could effectively promote the catalytic desulfuration and denitrification of CaO. Therefore, CaO-1 wt% MgCO₃ could effectively inhibit SO₂ and NO_x emission, which had great potential to be an efficient and clean method for the large-scale utilization of semi-coke.

利用热重分析法研究了CaO-MgCO ₃添加剂对半焦（SC）燃烧性能的影响。根据实验结果，在SC上添加CaO（Ca / S = 2）可以降低着火温度（约1.3°C）和燃尽温度（约0.99°C）。此外，CaO在SC上的添加剂显着降低了SO ₂和NO _x的排放。但是，在SC-CaO上添加1 wt％的MgCO ₃可以促进燃烧过程，并显着降低着火温度（约10°C）和燃尽温度（约8.64°C）。此外，最小的活化能可用于SC-CaO-1重量％MgCO ₃的燃烧。另一方面，添加MgCO₃与SC-CaO的不同含量（0.5重量％，1重量％，2重量％，4重量％）可提高CaO的孔径，促进硫定影性能。与其他SC-CaO-MgCO ₃样品相比，添加适量的MgCO ₃（1 wt％）可以有效地促进CaO的催化脱硫和反硝化。因此，CaO-1重量％的MgCO ₃能够有效抑制SO ₂和NO _x的排放，具有成为大规模清洁半焦的高效清洁方法的潜力。