Composition for anti-ammonia turbine oil

Abstract

The invention relates to a composition for anti-ammonia turbine oil. The composition comprises the following components by weight percentage: 1.1-2.0% of screening phenol antioxygen, alkyl diphenylamine antioxygen or formulated mixture antioxygen thereof, 0.01-2.0% of non-acid antirusting agent, 0.01-1% of metal passivator, 0.001-0.01% of anti-foaming agent and the balance of base oil. The base oil is II type hydrogenated base oil, and in the II type hydrogenated base oil, the sulphur content of the II type hydrogenated base oil based on weight is no more than 0.03%, and the saturation is no less than 90%. The antioxygen is formulated by the screening phenol antioxygen and the alkyl diphenylamine antioxygen, and the weight proportion of the antioxygen 1:0.1-10. The invention has the advantages of excellent lubricity, oxidation stability, favorable water separation, air release property and strong anticorrosion property, maintains neutral for ammonia and synthesis gas, has little possibility of sludge generation, reduces the time of machine halt, andreduces operation and maintenance cost.

Description

technical field [0001] The present invention relates to a lubricating oil composition, especially suitable for steam turbine oil composition with ammonia and synthesis gas compressors. Background technique [0002] In modern petrochemical, gas production and chemical fertilizer industries, compressors for synthesis gas and ammonia are often driven by steam turbines, and the compressor and steam turbine often use the same lubricating oil, that is, ammonia-resistant turbine oil. The characteristic of this oil is that it does not react chemically with ammonia. [0003] In recent years, with the extension of equipment maintenance period, higher requirements have been put forward for the performance of oil products. The ideal lubricant for the application of synthesis gas and ammonia gas is: it has excellent oxidation stability and oil-water separation, so as to reduce Oil change cycle and cost; it has better lubricity for air compressors, reduces wear and tear to make the syste...

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Problems solved by technology

The anti-ammonia turbine oil currently on the domestic market basically adopts the Class I base oil produced by the solvent refining process. The base oil produced by this process cannot completely remove polar substances such as aromatics, heterocycles, and colloids in the oil, so Under the action of high temperature and water, it is easy to oxidize and deteriorate to form sludge and paint film, so it cannot meet the lubrication needs of new technologies for synthesis gas and ammonia compressors and steam turbines in modern petrochemical, gas production and chemical fertilizer industries.

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