Preparation of Calcium Sulfate from Oil-Refining Acid Sludge by Neutralization Method

Abstract:

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 SO₄^2- in acid sludge is more than 75% in the product. The purified product meets the national quality standards for similar products.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2553-2557
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2553
• Online since: August 2013
• Authors: Li Jun Nie, Shi Kui Wu, Yang Liu Liu
• Keywords: Acid Sludge, Anhydrous Calcium Sulfate, Neutralization Method, Recycling

References

[1] Sh. X. Lin. Petroleum Refining Engineering[M]. Beijing:Petroleum Industry Press, 2000. pp.594-598

[2] L.H.Yu,T.X.Zh,Sh.S.Guo,et al. Research of the reconciliation of fuel oil using industrial wasted oil [J].Energy Engineering(in Chinese),Vol.4(2004),pp.8-11

[3] Biplob K. Leaching of phosphorus from incinerated sewage sludge ash by means of acid extraction fol-lowed by adsorption on orangewaste gel[J]. Journal of Environmental Sciences, Vol.12(2009),pp.1753-1760

DOI: 10.1016/s1001-0742(08)62484-5

[4] Fernandez JM, SenesiN, Plaza C. Effects of com-posted and thermally dried sewage sludges on soiland soilhumic acid properties[J]. Pedosphere, Vol.3(2009),pp.281-291

DOI: 10.1016/s1002-0160(09)60119-3

[5] H.Y.Yu, N.H. Lei, T.K.Li. Making use of acid residue from sulfonate production to prepare road asphalt[J]. Petroleum Processing and Petrochemicals(in Chinese),Vol.37(2006),pp.61-65

[6] Zh.X.Li.Treatment of acid residual from refinery[J]. Chemical Engineering Design(in Chinese), Vol.10(2000),pp.49-52

[7] Zh. G. Zhao, W.X. Tang, Z.Q. Zhang, et al.Utilization of sulfuric acid sludge in refinery [J]. Petroleum Processing and Petrochemicals(in Chinese), Vol.28(1997),pp.11-13

[8] M.E. Shi.Comprehensive utilization of acid sludge [J]. Chemical Engineer(in Chinese), Vol.5 (1997), pp.39-40

[9] D.Y. Zhang.Multipurpose utilization of waste sulfuric acid alkylation [J]. Environment Protection in Petrochemical Industry(in Chinese),Vol.1(1993),pp.40-43

[10] B.Wang.Research Progress in demulsifier for crude oil [J].Oilfield chemistry(in Chinese), Vol.11(1994),pp.266-272

[11] Y.Ch.Zheng, Y.H. She, H.X. Cheng.Sludge preventive used for improving acidizing effect[J]. Journal of Oil and Gas Technology(in Chinese),Vol.27(2005),pp.658-660