Preparation of Calcium Sulfate from Oil-Refining Acid Sludge by Neutralization Method
2013 ◽
Vol 726-731
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pp. 2553-2557
Keyword(s):
For the purpose of recycling acid sludge of lubricant oil from refinery, on the conditions that the dilution factor is 20 and the actual addition amount of calcium carbonate and calcium hydroxide is respectively 1.15 and 1.1 times of the theoretical value, neutralization method is used to process acid sludge. By means of removing post-reaction organic phase, evaporating, drying, igniting at 650°C for 80 min, dissolving, crystallizing, calcium sulfate product is obtained. The conversion rate of SO42- in acid sludge is more than 75% in the product. The purified product meets the national quality standards for similar products.
1932 ◽
Vol 24
(8)
◽
pp. 914-917
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Keyword(s):
2020 ◽
Vol 596
◽
pp. 117603
◽
Keyword(s):
2015 ◽
Vol 768
◽
pp. 350-362
2014 ◽
Vol 39
(4)
◽
pp. 21-27
◽
Keyword(s):
Keyword(s):
2014 ◽
Vol 12
(1)
◽
pp. 611-621
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