Technological process of eliminating naphthenic acid from diesel oil

A naphthenic acid and deacidification technology, applied in the field of oil refining, can solve the problems of high operating costs, consumption of hydrogen, affecting the quality and yield of oil products, etc., to improve quality and recovery rate, improve work efficiency, and reduce labor the effect of strength

Inactive Publication Date: 2006-03-01
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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Problems solved by technology

The former consumes a lot of alkali, pollutes the environment, and is prone to serious emulsification during the production process, which affects the quality and yield of oil products, and complicates the subsequent sewage treatment process; the lat

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  • Technological process of eliminating naphthenic acid from diesel oil

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Embodiment Construction

[0013] With reference to accompanying drawing 1, process of the present invention is further described in conjunction with embodiment.

[0014] (1) Deacidification experiment of distillate oil in the second line of Liaohe Changzhou

[0015] The raw material oil is Liaohe ordinary second-line distillate oil, and its acid value is 170.4mgKOH / 100mL. Deacidification agent is 5% sodium hydroxide solution. Add distillate oil and deacidification agent to the MD-21 high-efficiency microwave reaction tank. The volume ratio of deacidification agent to raw oil is 1:4, and put it into the SH9402 high-efficiency microwave reaction system. After 5 min of constant pressure irradiation under the condition of MPa, stop the reaction. After the reaction tank is cooled to room temperature, transfer the irradiated raw material oil into a spherical separatory funnel, let it stand for 25 minutes, and separate the upper and lower layers. The upper layer is the deacidified oil obtained after deacidi...

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Abstract

The present invention relates to acid matter eliminating technology for petroleum product, and is technological process of eliminating naphthenic acid from diesel oil. After fraction oil and deacidifying agent are added directly into microwave reactor, the microwave reactor is transferred into efficient microwave reaction system for microwave radiation. After deposition separating, the deacidifying agent with carried naphthenic acid is separated completely from the oil phase in deacidifying rate over 98 % and oil product recovering rate over 99.0 %. The separated acid phase is mixed with 30 % concentration sulfuric acid in the same volume for depositing separation into the upper layer of naphthenic acid and lower layer of sulfate solution. The said process has raised oil product quality and output, no emulsification, low production cost and environment friendship.

Description

1. Technical field [0001] The invention belongs to the field of refining oil products, and relates to the extraction and refining technology of acidic substances in oil products. A process for removing naphthenic acid from diesel is mainly proposed. 2. Background technology [0002] Naphthenic acid is an organic acid that widely exists in the middle boiling point fraction of naphthenic crude oil and is the main component of oil acidity. Its existence not only directly affects the performance and quality of oil products, but also seriously corrodes processing equipment . At the same time, naphthenic acid, as a by-product of petroleum processing, is a multi-purpose fine chemical raw material. Therefore, using reasonable technology to remove and recover naphthenic acid from oil can not only improve the quality of oil products, solve corrosion problems, and at the same time It can also obtain valuable chemical raw materials, which is of great significance. At present, alkalin...

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Application Information

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IPC IPC(8): C10G19/02C10G32/04
Inventor 赵杉林李萍张起凯张振华
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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