Preparation process of novel ester type anti-wear agent for diesel oil

A preparation process and anti-wear agent technology, applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of excessive diesel acidity, affecting the performance of diesel engines, etc., and achieve good anti-emulsification and anti-wear properties. Good, avoid the effect of emulsification
CN110511795AInactive Publication Date: 2019-11-29CNOOC TIANJIN CHEM RES & DESIGN INST +2
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CNOOC TIANJIN CHEM RES & DESIGN INST
Publication Date
2019-11-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a preparation process of a novel ester type anti-wear agent for diesel oil. The preparation process comprises the following steps: in a nitrogen protection atmosphere, carryingout an esterification reaction on polyol and straight-chain fatty acid in a molar ratio of 0.9-1.1 at 125-140 DEG C for 8-10 hours in the presence of a water-carrying agent and a molecular sieve supported catalyst; carrying out natural cooling after the esterification reaction is finished, and when a temperature decreases to 58-62 DEG C, carrying out extraction under a reduced-pressure condition to remove the water-carrying agent, and then filtering the product to filter out the molecular sieve supported solid catalyst; and after a product system is cooled to room temperature, removing residual trace moisture and inorganic impurities in the reaction product, adding a branched chain polyether type demulsifying agent, and carrying out sufficient mixing under stirring to obtain an ester typeanti-wear agent product for diesel oil. The ester type anti-wear agent for diesel oil prepared by using the method disclosed by the invention has the advantages of extremely low acid value, good anti-wear performance, extremely low condensation point and extremely good demulsibility.
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Description

technical field

[0001] The invention relates to a preparation process and application of a diesel antiwear agent in the field of refined oil additives. Background technique

[0002] As countries around the world pay more and more attention to environmental protection issues, the environmental protection and automotive industries have put forward higher and higher requirements for diesel quality indicators, and correspondingly, the requirements for the content of nitrogen, sulfur, and aromatics in diesel product indicators have also become more stringent. At the same time, the national VI standard for gasoline and diesel for vehicles, which has been fully implemented in my country since January 1, 2019, has also imposed stricter restrictions on the content of polycyclic aromatic hydrocarbons in diesel, dropping from 11% to 7%, a drop of 36%. , stricter than the EU 8% standard.

[0003] The reduction of sulfur and aromatic content will directly or indirectly lead to the deteri...

Claims

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