Device for producing ammonium sulfate by using waste sulphur generated during gas desulfuration
A technology of coal gas and ammonium sulfate, applied in the field of coking and chemical industry, can solve the problem of unusable waste sulfur and achieve the effect of improving color and improving efficiency
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[0020] Such as figure 1 As shown, the sulfur content is 15.5%, the water content is 80.9%, and other impurities are 3.6% (including coke powder, coal powder, tar, ammonium thiocyanate, ammonium thiosulfate, ammonium sulfate, and catalyst residues), using a continuous molten sulfur purifier After purification, the sulfur was obtained with a purity of 99.6%.
[0021] After the sulfur containing 99.5% sulfur is subjected to secondary oxidation (including the primary absorption tower), the composition (volume %) of the obtained gas is SO 2 : 0.059%, SO 3 : 0.308%, O 2 : 12.023%, N 2 : 87.61%.
[0022] Composition of the above into SO 2 : 0.059%, SO 3 : 0.308%, O 2 : 12.023%, N 2 : 87.61% of the gas is absorbed by the circulating mother liquor of ammonium sulfate (the specific gravity of the mother liquor is 1.26g / cm 3 , the crystallization ratio is less than 10%, the acidity of the mother liquor is 3.5-4.5%, and the liquid-gas ratio (V / V) is 1:10; and then absorbed by con...
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