Marine fuel oil stability additive and preparation method thereof

Abstract

The invention relates to a marine fuel oil stability additive and a preparation method thereof. The marine fuel oil stability additive is of a modified alkylphenol polyether amide structure, and the preparation method of the marine fuel oil stability additive comprises the following steps: stirring and alkalizing alkylphenol polyoxyethylene ether with m epoxy groups at 45-50 DEG C for 2 hours, adding acetone into the alkalized alkylphenol polyoxyethylene ether, adding chloroacetic acid under the condition of uniform stirring, carrying out SN2 nucleophilic substitution reaction for 4-5 hours, removing the acetone after the reaction is completed to obtain light yellow sticky alkylphenol polyoxyethylene ether carboxylate, and carrying out acid washing separation to obtain alkylphenol polyoxyethylene ether carboxylic acid; and heating and blending the alkylphenol polyoxyethylene ether carboxylic acid and diethylenetriamine according to a molar ratio of 1: 1.0-1: 1.2, carrying out further esterification reaction by taking toluene as a water-carrying agent and p-toluenesulfonic acid as a catalyst, and heating and stirring at 130-145 DEG C for 3-4 hours to obtain the alkylphenol polyether amide. The stabilizer additive has a good stable dispersion effect in the marine fuel oil, and effectively awards the deposition rate of organic matters.

Description

technical field [0001] The invention relates to the technical field of petroleum refining and processing, in particular to an additive used in marine fuel oil to enhance the stability of the fuel oil system and a preparation method thereof. Background technique [0002] In recent years, my country's dependence on foreign oil resources has reached nearly 70%, and the energy security situation is becoming increasingly severe. How to improve the utilization rate of oil resources to reduce my country's dependence on imported oil is an important problem that my country's oil industry needs to solve urgently. Residual oil is the heavy component left after crude oil resources have been refined layer by layer. It is extremely viscous, has no fluidity, and has poor combustibility. Residual oil can only be used as asphalt paving materials or refining coke, and its economic value is extremely low. The inefficient use of petroleum resources is often the weak point of the petroleum indus...

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Problems solved by technology

Residual oil is the heavy component left after crude oil resources have been refined layer by layer. It is extremely viscous, has no fluidity, and has poor combustibility. Residual oil can only be used as asphalt paving materials or refining coke, and its economic value is extremely low. The inefficient use of oil resources is often the weak point of the oil industry

Blending this part of highly viscous residual oil with light oil such as diesel oil into marine fuel oil is one of the effective means to improve the comprehensive utilization of petroleum resources. The purpose of adding light oil is to reduce residual oil However, due to the difference in the composition and properties of the blended residual oil and diesel oil, the instability of the oil system is very likely to occur during blending and blending, and then the viscous oil with the main components of colloid and asphaltene is precipitated. organic sediment

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