Abstract: The characteristics of desulfuration of high-sulfur petroleum coke are investigated with a pulse-differential fix bed reactor. The combustion tests are carried out with one representative coke with particle size of 60—70 μm between 830 ℃ and 950 ℃. In the experiment, sulfur is captured by calcium oxide addition, and then yields stable calcium sulfide. Through the tests, five important factors affecting desulfuration are found: temperature, Ca/S molar ratio, oxygen pressure, velocity of gas and intensity of SO₂ emission. Burning in air, the optimum Ca/S molar ratio is 2, and the optimum temperature ranges from 850 ℃ to 890 ℃. Intensity of SO₂ emission is related with temperature and velocity of gas. Velocity of gas and intensity of SO₂ emission have negative effect to desulfuration. Another important finding from the results on high-sulpher petroleum coke is that under the most optimum conditions, the desulfuration ratio in air is higher than that in pure oxygen.

Key words:

高硫石油焦, 固硫率, 燃烧

摘要： 以固定床微分反应器脉冲进气的方法对高硫石油焦的燃烧固硫特性进行了研究.实验中以CaO为固硫剂，高硫焦在高温下燃烧释放的SO₂与其反应生成稳定的CaSO₄.通过对实验结果进行分析，确定了5种影响固硫效率的主要因素.

关键词:

高硫石油焦, 固硫率, 燃烧