Special lubricating oil for compound nitrogen/hydrogen gas compressor

Abstract

The invention discloses a special lubricating oil for a compound nitrogen / hydrogen gas compressor, which is characterized by being prepared from the following raw materials in percentage by mass: 80% of mineral base oil BS120, 12% of modified castor oil, 3% of polyisobutylene, 3% of dibutyl ester, 1.95% of silicone oil and 0.05% of nitrogen gas. The method for preparing the special lubricating oil for a compound nitrogen / hydrogen gas compressor comprises the following steps: pre-inspecting the raw materials, quantifying, respectively adjusting, carrying out physical inspection, combinedly adjusting, carrying out chemical inspection, carrying out fine adjustment, inspecting on a platform, filtering, carrying out gas treatment, carrying out final inspection, and packaging. The special lubricating oil disclosed by the invention does not contain any element harmful to catalysts, has the advantages of favorable wear resistance, water resistance, ammonia resistance, ageing resistance and energy-saving effect, can be easily recycled and regenerated, and solves the problem of the adoption of an oil product substitute in the existing nitrogen / hydrogen gas compressor.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a special lubricating oil for compound nitrogen-hydrogen compressors. Background technique [0002] Nitrogen-hydrogen compressors are the core equipment in the synthetic ammonia industry. Since the 1970s, there has been no special lubricating oil for this equipment in my country. In order to solve the contradiction between supply and demand, the Ministry of Commerce proposed to the national nitrogen fertilizer manufacturers in 1972: " The oil used for nitrogen-hydrogen compressors can generally refer to the oil used for air compressors", and it is also pointed out: "Nitrogen-hydrogen compressors (360Kg / cm 2 ) can be lubricated with No. 24 cylinder oil" (excerpted from the "Petroleum Commodity Knowledge Manual" issued by the Fuel Bureau of the former Ministry of Commerce). The special lubricating oil for compressors is not listed in it. The air compressor oil a...

AI Technical Summary

Problems solved by technology

When the air compressor oil and No. 24 cylinder oil used as substitutes are used in nitrogen-hydrogen compressors, there are many obvious technical defects, mainly as follows: 1. The additives of the above two substitute oils contain s, Although the three elements p and cl have good anti-wear properties, they are the natural enemies of the catalyst in the production of synthetic ammonia. If these lubricating oils are used for a long time, their toxins will accumulate day by day, which will inevitably have a serious harmful effect on the expensive catalyst, eventually leading to catalyst poisoning

2. The compressor is seriously worn, the parts are replaced frequently, and the maintenance tasks are heavy, which increases the maintenance cost of the enterprise

3. When substitute oil products are involved in the work, under strong pressure (between 26Mpa and 31.4Mpa), the viscosity rises sharply, and the friction coefficient between the flow layers increases sharply, which not only increases the workload of the compressor, but also increases the power consumption amount, and accelerate the oxidation, deterioration, gelation and coking of the oil itself, and mix with water, ammonia and mechanical impurities to form a viscous waste oil in the state of "water in oil", which is difficult to recycle and regenerate

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