Synthetic diesel engine oil and preparation method thereof
A technology of engine oil and synthetic diesel, which is applied in the petroleum industry, lubricating compositions, etc., can solve the problems of poor engine protection, aggravated soot and carbon pollution, and high working temperature, and achieves outstanding high-temperature oxidation stability and excellent Excellent effect on deposition control and equipment cleanliness, high and low temperature performance
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Embodiment 1
[0025] Embodiment 1: (in terms of 100 kilograms, the same below)
[0026]
[0027] The composite additive package contains 2.85% calcium, 0.94% zinc, 0.65% nitrogen, 0.86% phosphorus, 0.04% molybdenum and 0.36% boron.
[0028] The preparation method of this synthetic diesel engine oil adopts the following steps:
[0029] (1) Pump the oil-soluble polyalkylene glycol and synthetic ester base oil of the above weight into the blender with a gear pump, heat and stir, and mix evenly at a constant temperature of 60°C to obtain a mixed oil A;
[0030] (2) Add the above-mentioned compound additive package and viscosity index improver (polymethacrylate) to the mixed oil A prepared in step (1), and continue mechanical stirring at a constant temperature of 60°C for 2 hours to prepare mixed oil B ;
[0031] (3) Filter the blended oil B prepared in step (2), and filter it through a filter with a filter bag device under a pressure of 0.2 MPa to obtain clear and transparent synthetic die...
Embodiment 2
[0033]
[0034] The composite additive package contains 3.85% calcium, 1.40% zinc, 0.86% nitrogen and 1.22% phosphorus.
[0035] The preparation method of this synthetic diesel engine oil adopts the following steps:
[0036] (1) Pump the oil-soluble polyalkylene glycol and synthetic ester base oil of the above weight into the blender with a gear pump, heat and stir, and mix evenly at a constant temperature of 55°C to obtain a mixed oil A;
[0037] (2) Add the above-mentioned compound additive package and viscosity index improver (hydrogenated styrene isoprene copolymer) to the mixed oil A prepared in step (1), and continue mechanical stirring for 1.5 hours at a constant temperature of 55°C. Prepare mixed oil B;
[0038] (3) Filter the blended oil B prepared in step (2), and filter it through a filter with a filter bag device under a pressure of 0.15 MPa to obtain clear and transparent synthetic diesel engine oil.
Embodiment 3
[0040]
[0041]
[0042] The composite additive package contains 0.89% calcium, 1.15% zinc, 0.72% nitrogen, 1.12% phosphorus and 0.88% magnesium.
[0043] The preparation method of this synthetic diesel engine oil adopts the following steps:
[0044] (1) Pump the oil-soluble polyalkylene glycol and synthetic hydrocarbon base oil of the above weight into the blender with a gear pump, heat and stir, and mix evenly at a constant temperature of 50°C to obtain a mixed oil A;
[0045] (2) Add the above-mentioned compound additive package and viscosity index improver (styrene-diene copolymer) to the mixed oil A prepared in step (1), and continue mechanical stirring for 1 hour at a constant temperature of 50°C to obtain a mixed oil oil B;
[0046] (3) Filter the blended oil B prepared in step (2), and filter it through a filter with a filter bag device under a pressure of 0.1 MPa to obtain clear and transparent synthetic diesel engine oil.
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Abstract
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