Methods of lube stock solvent dewaxing process intensification

UDK: 665.666
DOI: 10.24887/0028-2448-2017-11-70-72
Key words: dewaxing, base oil, methylisobutylketone
Authors: S.A. Antonov, O.A. Kosareva, S.V. Zaglyadova, K.B. Rudyak (United Research and Development Centre LLC, RF, Moscow), O.B. Dogadin (Rosneft Oil Company, RF, Moscow)

Projections for the world production of I-IV API base oils are submitted in the article. It is noted that base oils of the 1-st group will remain the largest segment of base oil production for a long time. The basic flow schemes for base oil production on the lube oil units of Rosneft Oil Company are described. One of the main processes for producing base oils is solvent dewaxing, which is characterized by high material and capital costs. The main ways of process intensification such as modernization of equipment, applying of deparaffinized additives, the use of and search for new solvents are described in the article.

One of the most promising directions of intensification is the use of high molecular weight ketones, particularly methyl isobutyl ketone (MIBK), which has a number of advantages compared to the traditionally used mixed solvent – methyl ethyl ketone (MEK) and toluene. To confirm the feasibility of replecement of MEK and toluene mixture in MIBK the economic efficiency calculations were carried out. The calculation results have confirmed the economic feasibility of replacement MEK and toluene mixture at MIBK.


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