Method for coal desulfurization catalyzed by microwave
A microwave catalysis and coal technology, which is applied in the field of coal desulfurization, can solve the problems of desulfurization technology that does not destroy the coal matrix structure, has no high desulfurization efficiency, and is limited in the scope of application, so as to improve the quality of coal and the scope of use, and achieve good promotion and application value. , the effect of improving utilization
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[0025] Example 1:
[0026] Crush 40 grams of raw coal (Shandong Guohong pulverized coal, Shandong Xuecheng Shanjia village fat coal, and live chicken rabbit coal) after crushing (particle size less than 0.3mm); add to 60 grams of water and stir for 2 minutes to obtain a more uniform dispersion system; Add 100 ml of 4 moles of alkali solution (optionally sodium hydroxide, potassium hydroxide) per liter and transfer to a 250 ml conical flask, put it in a microwave oven for 6 minutes of microwave thermal desulfurization reaction, and perform microwave radiation catalysis; Wash and filter with a small amount of water, add 20 ml each time, and wash until the pH of the filtrate is less than 9. After the filter cake is soaked in 5 moles of hydrochloric acid for 5 minutes, it is heated and boiled for 15 minutes and then allowed to stand for cooling; finally, it is filtered and dried. In this example, a microwave oven is used for microwave radiation catalysis. The wavelength frequency of t...
Example Embodiment
[0030] Example 2: Heating condition experiment
[0031] Process according to the method described in Example 1, the difference is that one of them is microwave heating for 6 minutes, and the other two experiments are heating in other ways, and keep the system temperature at 80 and 90°C for 24 hours. Other treatment methods and reactions The conditions are the same.
[0032] Comparison of the catalytic effects of microwave and other heating methods: (Coal sample: Fertilizer coal from Shandong Xuechengshanjia Village)
[0033] Means
Example Embodiment
[0034] Example 3: Microwave treatment time experiment
[0035] The treatment was carried out according to the method described in Example 1, except that the microwave treatment time was set to 2, 3, 4, 5, 6, 7, 8 minutes, and other treatment methods and reaction conditions were the same.
[0036] Comparison of microwave time effects: (Coal sample: Fertilizer coal in Shandong Xuechengshanjia Village)
[0037] Time / min
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