Fenton reagent oxidized coal desulfurization method
A Fenton reagent and oxidation desulfurization technology, which is applied in the field of hydroxyl radical oxidation to remove coal sulfur, and Fenton reagent oxidation coal desulfurization, can solve the problems of difficult industrialization, environmental pollution, high cost, etc., and achieve high-efficiency desulfurization methods, The effect of low pollution and low energy consumption
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Embodiment 1
[0040] 100g of pulverized coal is wet-milled with a ball mill at 550-600r / min and 35% (W) of water for 60min to make a coal-water slurry, and the particle size distribution range is mainly below 0.106mm.
[0041] Weigh FeS0 4 ·7H 2 0, the dosage is 1.5g according to the coal mass, mix it with coal-water slurry and let it stand for 1h.
[0042] 30%H 2 o 2 The addition amount is calculated according to the total mass of coal-water slurry plus water when the addition amount is 6%.
[0043] The final mass percentage of water in the coal slurry mixture is 70%-80%.
[0044] Adjust the pH to 2 with sulfuric acid.
[0045] Oxidative desulfurization reaction time 24h.
[0046] After the oxidation is finished, the coal powder is filtered out from the coal-water slurry.
[0047] After oxidative desulfurization, the filtered coal powder is washed with water until neutral, then filtered out and dried.
[0048] The sulfur content of pulverized coal after desulfurization was measured...
Embodiment 2
[0050]100g of pulverized coal is wet-milled with a ball mill at 550-600r / min and 45% (by mass) of water for 60 minutes to make coal-water slurry, and the particle size distribution range is mainly below 0.106mm.
[0051] Weigh FeS0 4 ·7H 2 0, the dosage is calculated as 2.0g according to the coal mass, mixed with coal-water slurry and then left to stand for 2 hours.
[0052] 30%H 2 o 2 The amount of addition is calculated according to the total mass of coal-water slurry plus water when the amount of addition is 12%.
[0053] The final mass percentage of water in the coal slurry mixture is 60%-70%.
[0054] Adjust the pH to 4 with sulfuric acid.
[0055] Oxidative desulfurization reaction time 12h.
[0056] After the oxidation is finished, the coal powder is filtered out from the coal-water slurry.
[0057] Add lye to the coal powder filtered out after oxidative desulfurization to make it neutral, wash it with water, filter it out, and dry it.
[0058] The sulfur conten...
Embodiment 3
[0060] 100g of pulverized coal is wet-milled with a ball mill at 370-380r / min and 40% (by mass) of water for 60 minutes to make coal-water slurry, and the particle size distribution range is mainly 0.08-0.106mm.
[0061] Weigh FeS0 4 ·7H 2 0, the dosage is 2.5g according to the coal mass, mix with coal-water slurry and let stand for 1.5h.
[0062] 30%H 2 o 2 The amount of addition is calculated according to the total mass of coal-water slurry plus water when the amount of addition is 12%.
[0063] The final mass percentage of water in the coal slurry mixture is 50%-60%.
[0064] Adjust the pH to 3.5 with sulfuric acid.
[0065] Oxidative desulfurization reaction time 24h.
[0066] After the oxidation is finished, the coal powder is filtered out from the coal-water slurry.
[0067] Add lye to the coal powder filtered out after oxidative desulfurization to make it neutral, wash it with water, filter it out, and dry it.
[0068] The sulfur content of pulverized coal after...
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