Summary
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1.
A study has been made of the filtration process for DF-11 additive with the imported diatomite filter aids Speedplus and Superaid, and with the domestic powders Korovograd kieselguhr and FP-1 and FP-2 filtroperlites. Effects from the precoat composition, filter aid concentration in continuous dosage, and content of insoluble matter in the additive have been established quantitatively in relation to filtration rate and filtrate quality.
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2.
Feasibility has been demonstrated for the cleanup of DF-11 additive by filtration with the domestic filtroperlites FP-1 and FP-2. The degree of filtrate purity when the domestic filter aids are used is 60–80 mg/100 g, with an adequately high filtration rate.
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Literature cited
A. M. Kuliev, Chemistry and Technology of Additives for Lubricating Oils and Fuels [in Russian], Khimiya, Moscow (1972).
L. I. Rudenko, A. S. Soroka, M. A. Al'tshuler, et al., in: Lubricating Greases, Additives, and Lubricating-Cooling Fluids (Metal-Working Fluids) [in Russian], Collected Works of All-Union Association “Neftekhim,” No. 5, Moscow (1973), p. 182.
D. B. Purchas, Chem. Process Eng.,48, No. 6, 96 (1967).
V. A. Zhuzhikov, Filtration [in Russian], Khimiya, Moscow (1971).
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 10, pp. 12–15, October, 1974.
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Rudenko, L.I. Cleanup of antioxidant additive DF-11 by filtration with filter aids. Chem Technol Fuels Oils 10, 754–757 (1974). https://doi.org/10.1007/BF00717107
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DOI: https://doi.org/10.1007/BF00717107