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Cracking agent C9 primary hydrotreated oil deodorising method

A hydrogenation oil and deodorization technology, which is only applied in the direction of multi-stage series refining process, can solve the problems of not meeting the quality requirements of solvent oil, easy discoloration, instability, etc., and achieve low cost, good effect, and no new The effect of increasing pollution

Active Publication Date: 2010-02-17
广东新华粤石化集团股份公司
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Problems solved by technology

[0004] After a period of low temperature and low pressure, the primary hydrogenated oil that has been hydrotreated with a high-activity catalyst has a large amount of monocyclic olefins, sulfur, and nitrogen impurities. Although the quality of the oil is improved and the appearance is light, it still has a foul smell. Stable, easy to change color, can not meet the quality requirements of solvent oil

Method used

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  • Cracking agent C9 primary hydrotreated oil deodorising method

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Embodiment

[0023] In 1000 grams of primary hydrogenated oil, add 2 grams of activator citric acid, stir and dissolve, then add binary solid stable chlorine dioxide that accounts for 0.25% of the weight of primary hydrogenated oil and is made of 4 times the weight of water Solution, stirred for 1 hour, drained the reaction solution after settling for 25 minutes to obtain a precipitate; neutralized the precipitate with alkaline neutralizing agent sodium hydroxide to neutrality; then added 300 grams of water for washing until the oil product was Neutral, after draining clean water, it can be obtained. The above steps are all carried out under normal temperature and pressure. It is distilled to obtain the aromatic solvent oil that meets the market demand.

[0024] Comparison of deodorized solvent oil obtained in the present invention with primary hydrogenated oil without deodorization:

[0025]

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Abstract

The invention relates to a cracking agent C9 primary hydrotreated oil deodorising method and the method comprises the following steps: a. dissolving acidic activator in primary hydrotreated oil; b. using 3-5 times of water to prepare stabilized chlorine dioxide water solution; c. mixing the obtained solutions in step a and step b, stirring for 0.5-3h, precipitating for 0.1-2h, discharging reactionliquid, obtaining precipitate; d. neutralizing the precipitate with basic neutralizer to ensure the precipitate to be neutral; e. washing with water 1-2 times, discharging water and obtaining the finished product, wherein the content of the acidic activator is not more than 0.4% of the primary hydrotreated oil, the content of stabilized chlorine dioxide is 0.1-0.5% of primary hydrotreated oil andthe above steps are performed at room temperature and normal pressure. The invention has simple process, low cost, no new pollution and good effect.

Description

technical field [0001] The invention relates to a refining method of cracked C9, in particular to a deodorization method of cracked refined C9 primary hydrogenated oil. Background technique [0002] Ethylene plant cracks carbon nine, after cutting, the distillation range is in the range of 140-200 ° C, called refined C9, it contains a large amount of naphthenes and aromatics, the sum of the two is as high as 96%, and it is a good solvent oil raw material. However, due to the presence of diolefins, monoolefins and S, N impurities, it produces a foul odor and is unstable in storage. Therefore, most of them are used as fuel oil at present, failing to give full play to its economic value. [0003] The refining of refined carbon nine usually adopts the method of secondary hydrogenation, that is, one-stage hydrogenation to remove dienes, and two-stage hydrogenation to remove mono-olefins and sulfur and nitrogen impurities. [0004] After a period of low temperature and low pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/12
Inventor 麦启文谢桂芳庞海舰叶富强穆智宇
Owner 广东新华粤石化集团股份公司
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