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Lubricating oil for biogas engine

An engine and lubricating oil technology, applied in lubricating compositions, petroleum industry, additives, etc., can solve the problems of engine rust, failure to meet lubrication requirements, and lack of mature technologies for reference, and achieve strong operability and viscosity. Moderate and good solubility

Active Publication Date: 2013-09-11
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The "Great Wall" gas engine lubricating oil launched by Sinopec Lubricating Oil Company can reduce the damage to engine parts caused by gas combustion and provide sufficient lubrication protection for the engine, but it cannot satisfy some biogas fuels with high hydrogen sulfide content (such as table The biogas shown in 1) engine lubrication requirements, when the hydrogen sulfide content in the fuel gas exceeds 0.5% (weight), the intake and exhaust ports of the engine using "Great Wall" gas engine lubricating oil will rust
Therefore, the existing "Great Wall" gas engine lubricating oil cannot meet the working requirements of biogas fuel with high hydrogen sulfide content, and there is no mature technology in the industry for reference

Method used

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  • Lubricating oil for biogas engine
  • Lubricating oil for biogas engine
  • Lubricating oil for biogas engine

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Embodiment Construction

[0021] In order to further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the specific implementation of the biogas engine lubricating oil proposed according to the present invention is described in detail below.

[0022] According to the data in Table 2, the biogas engine lubricating oils of Examples 1 to 3 were blended, and the performance evaluation of the above lubricating oils was carried out. The evaluation results are shown in Table 2. The alkyl of the sulfurized calcium alkylphenate in embodiment 1 is the alkyl that contains 10 carbons, and the molecular weight of dienyl succinimide is 1000; The alkyl of the sulfurized calcium alkylphenate in embodiment 2 is to contain The alkyl group of 25 carbons, the molecular weight of dienyl succinimide is 2500; The alkyl group of the sulfurized alkyl phenate calcium in embodiment 3 is the alkyl group containing 30 carbons, dienyl succinimide The molecu...

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Abstract

The invention relates to a lubricating oil for a biogas engine. The lubricating oil comprises the following substances of: by weight, 0.3-1.0% of sulfurized calcium alkyl phenolate, 0.1-0.5% of DiaIk eny I Succinimide, and the balance Great Wall brand lubricating oil for a gas engine, wherein base number of sulfurized calcium alkyl phenolate is more than 240 mgKOH / g and its alkyl group is an alkyl group containing 10-30 carbon; and the molecular weight of DiaIk eny I Succinimide is 1000-3000. The sum of the above substances is 100% by weight. The lubricating oil for the biogas engine can meet the lubrication requirement of an engine with biogas containing about 6000ppm (volume ratio) of hydrogen sulfide as the fuel gas.

Description

technical field [0001] The invention relates to an engine lubricating oil in the field of lubricating oil, in particular to a lubricating oil suitable for biogas fuel engines with high hydrogen sulfide content. Background technique [0002] The vigorous rise of the sewage treatment industry will promote the rapid development of biogas fuel power generation. Due to the different characteristics of each sewage treatment plant, the biogas produced by some sewage treatment plants has a high content of hydrogen sulfide, which cannot be removed in a reasonable way. For example, the composition of biogas produced by a biogas plant is shown in Table 1: [0003] Table 1 [0004] gas composition h 2 S CO 2 CH 4 O 2 CO H 2 other Content, wt% 0.695 33.7 61.5 0.5 0 0.086 3.519 [0005] The high content of hydrogen sulfide in biogas fuel puts forward strict lubrication requirements f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M141/08C10N40/25
Inventor 朱和菊耿志勇孟雪梅
Owner CHINA PETROLEUM & CHEM CORP