A kind of anti-coking type turbine oil and preparation method thereof

An anti-coking and turbine technology, which is applied in the petroleum industry, lubricating compositions, etc., can solve the problems of inaccurate reflection of the tendency of paint film formation on high-temperature metal surfaces, inappropriate antioxidant formulations, and poor solubility of oxidation products, etc., to achieve good Carbon deposition and sludge control ability, excellent air release performance, and the effect of improving poor solubility

Active Publication Date: 2017-10-20
辽宁海华科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the excellent performance of this type of base oil, the oxidation products produced by itself at high temperature are much less than Group I base oils, but the saturation is higher than that of Group I base oils, and the solubility of polar oxidation products is poor, which will cause paint film precipitation
[0007] 3) The antioxidant formula used is not suitable, and the degradation products of some antioxidants are easy to form paint film
It cannot simulate the actual working conditions, and cannot accurately reflect the formation trend of the paint film on the high-temperature metal surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An anti-coking turbine oil, the components by weight percentage are: hydrorefining base oil: 91.81%, synthetic base oil: 6%, extreme pressure antiwear agent: 1.06%, antioxidant: 0.8%, reducing Coagulant: 0.3%, Demulsifier: 0.02%, Antifoaming agent: 0.01%.

[0028] The preparation method of the above anti-coking turbine oil: add the base oil according to the above ratio, heat and stir until it is clear and transparent, at 50-55 ° C, add pour point depressant and stir to complete dissolution at 10 minutes interval, add extreme pressure anti-wear at 10 minutes interval The mixture is stirred until it is completely dissolved, and then the antioxidant alkyl diphenylamine or its derivative is added at a 10-minute interval and stirred until it is completely dissolved. Add demulsifier and compound defoamer, control the temperature at 70-80°C, stir for 1 hour, filter, and package.

Embodiment 2

[0030] An anti-coking turbine oil, the components by weight percentage are as follows: hydrorefining base oil: 82.57%, synthetic base oil: 15%, extreme pressure anti-wear agent: 0.64%, antioxidant: 1.25%, reducing Coagulant: 0.5%, Demulsifier: 0.02%, Anti-foaming agent: 0.02%.

[0031] The preparation method of the above anti-coking turbine oil: add the base oil according to the above ratio, heat and stir until it is clear and transparent, at 55-60 ° C, add pour point depressant and stir until it is completely dissolved at 10 minutes interval, and add extreme pressure and anti-wear at 20 minutes interval. The mixture is stirred until it is completely dissolved, and then the antioxidant alkyl diphenylamine or its derivative is added at a 10-minute interval and stirred until it is completely dissolved. Add demulsifier and compound defoamer, control the temperature at 70-80°C, stir for 1 hour, filter, and package.

Embodiment 3

[0033] An anti-coking type turbine oil, the components by weight percentage are as follows: hydrorefining base oil: 70.53%, synthetic base oil: 26%, extreme pressure and anti-wear agent: 0.44%, antioxidant: 2.0%, reducing Coagulant: 1%, Demulsifier: 0.02%, Antifoaming agent: 0.01%.

[0034] The preparation method of the above anti-coking turbine oil: add the base oil according to the above ratio, heat and stir until it is clear and transparent, at 50-60 ° C, add pour point depressant at 10 minutes interval and stir until completely dissolved, and add extreme pressure and anti-wear at 20 minutes interval. The mixture was stirred until it was completely dissolved, and then the antioxidant alkyl diphenylamine or its derivative was added at an interval of 30 minutes and stirred until it was completely dissolved. Add demulsifier and compound defoamer, control the temperature at 70-80°C, stir for 1 hour, filter, and package.

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Abstract

The invention relates to an anti-coking turbine oil, which is composed of hydrorefined base oil, synthetic base oil, extreme pressure antiwear agent, antioxidant, pour point depressant, demulsifier, and antifoam agent. The oil refers to API II and III base oils, the synthetic base oil is propylene oxide polyalkylene ether, the extreme pressure antiwear agent is a composition of ashless composite additive and acid sulfide, and the antioxidant is A mixture of sulfide-based liquid high molecular weight phenol, alkyl diphenylamine or derivatives thereof, the pour point depressant is polyalphaolefin, the demulsifier is a polyether demulsifier, and the antifoaming agent is a composite antifoam Foaming agent; by weight percentage, each component is composed of hydrorefined base oil 70‑95%, synthetic base oil 0‑30%, extreme pressure antiwear agent 0.3‑1.5%, antioxidant 0.5‑2%, pour point depressant 0.1‑1%, demulsifier 0.01‑0.05%, antifoam agent 0.01‑0.04%. The invention has excellent anti-coking tendency, is not easy to form black paint film at high temperature, and has excellent heat and oxidation stability.

Description

technical field [0001] The invention relates to a turbine lubricating oil, in particular to a turbine lubricating oil whose bearing bush is not easy to coke at high temperature and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the energy industry, gas turbines and steam and gas combined cycle power generation technologies have been widely used. In response to the requirements of energy saving and environmental protection, the working parameters of turbines are getting higher and higher, the operating environment of turbine oil is becoming more and more harsh, and the paint film problem of some heavy-duty turbines is on the rise. [0003] The paint film, like the sludge, is the product of oil oxidation and deterioration. The difference is: the sludge is a low-temperature oxidation product, which contains a considerable amount of water; Adhesion to the metal surface of the friction pair, which has an adverse effect ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/12
Inventor 李元鸿赵宁李明慧
Owner 辽宁海华科技股份有限公司
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