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Method for producing clean solvent oil without hydrogen

A solvent oil, non-hydrogen-prone technology, which is applied in the field of non-hydrogen-produced clean solvent oil, can solve the problems of large consumption of adsorbents, easy deactivation of adsorbents, and shortened service life, so as to reduce volume and investment, shorten Dehydration time, the effect of reducing the consumption of alkali

Active Publication Date: 2014-03-26
CHINA PETROCHEMICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Although the above two patents mentioned that the nitrogen compounds and phenolic oxides in the solvent oil are the cause of the discoloration of the oil, they did not point out that it is the cause of the odor of the oil, so there is no way to remove it to the minimum content as much as possible.
And because the pre-alkali washing is limited by the internal structure of the equipment, the alkali and the phenolic oxides in the oil cannot fully transfer mass. After the pre-alkali washing, the content of phenolic oxides in the oil is still very high (about 30ppm), making the subsequent adsorbent Due to the need to adsorb a large amount of phenol oxides, the activity drops sharply, which shortens its service life and consumes a lot of adsorbents
On the other hand, the two patents did not take measures against the odor and color instability caused by mercaptans
Therefore, the technology is not perfect
[0018] Based on the above-mentioned public information such as the industrialization technology or patents or papers of various non-hydrogen-produced solvent oils, the existing technologies have the following deficiencies: ① The existing technologies have not completely eliminated the factors that cause oil odor and color instability
② All of them only focus on one of the substances, especially mercaptans, to carry out technical improvement work, ignoring the influence of other substances on the quality of oil products, and the adaptability to changes in the properties of raw materials is not strong, and finally colorless oil cannot be obtained. Odorless Cleaning Spirits Products
③ Due to the technical limitations of reaction mass transfer equipment, the adsorbent used to remove nitrogen compounds and phenolic oxides is easily deactivated, the consumption of adsorbent is large, and the production cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: For a feedstock oil with a distillation range of 40-160°C, a Saibo characteristic number of +28, a mercaptan content of 125ppm, a basic nitrogen content of 2.1ppm, and a phenolic oxygen content of 36ppm. The processing capacity is 6m 3 / h, feed temperature is 45°C, feed pressure is 0.35MPa, air flow is 1.2Nm 3 / h, the circulating lye concentration is 10%, the alkali 260kg / h is injected into the oil-alkali mixed reactor of the dephenol oxygenation unit, and the oil-alkali mixer at the liquid film mass transfer reactor and the top of the liquid film mass transfer reactor are injected with alkali Both are 220kg / h, the content of binuclear ammonium phthalocyanine cobalt sulfonate in the lye of the oil-alkali mixer injected into the liquid film mass transfer reactor is 200ppm, and the adsorbent used is an inorganic salt of coal-based activated carbon loaded with metal zinc and cobalt And water-soluble inorganic compound acid. After testing, the phenolic oxygen c...

Embodiment 2

[0042] Example 2: For a feedstock oil with a distillation range of 40-160°C, a Saibo characteristic number of +28, a mercaptan content of 132ppm, a basic nitrogen content of 2.5ppm, and a phenolic oxygen compound content of 40ppm. The processing capacity is 16m 3 / h, feed temperature is 45°C, feed pressure is 0.35MPa, air flow is 2.2Nm 3 / h, the concentration of circulating lye is 10%, inject 600kg / h of alkali into the oil-alkali mixed reactor of the dephenol oxygenation unit, and inject alkali into the oil-alkali mixer at the liquid film mass transfer reactor and the top of the liquid film mass transfer reactor Both are 400kg / h, and the content of binuclear phthalocyanine cobalt ammonium sulfonate ammonium in the lye of the oil-alkali mixer injected into the liquid film mass transfer reactor is 200ppm, and the adsorbent used is coal-based activated carbon loaded with metal iron, cobalt and nickel. Inorganic salt and water-soluble inorganic compound acid. After testing, the ...

Embodiment 3

[0043] Example 3: For feedstock oil with a distillation range of 70-110° C., a Saibo characteristic number of +28, a mercaptan content of 30 ppm, a basic nitrogen content of 0.5 ppm, and a phenolic oxygen compound content of 10 ppm. The processing capacity is 10m 3 / h, feed temperature is 40°C, feed pressure is 0.40MPa, air flow is 0.6Nm 3 / h, the circulating lye concentration is 8%, the alkali 160kg / h is injected into the oil-alkali mixed reactor of the dephenol oxygenation unit, and the oil-alkali mixer at the liquid film mass transfer reactor and the top of the liquid film mass transfer reactor are injected with alkali Both are 110kg / h, and the content of binuclear phthalocyanine cobalt ammonium sulfonate ammonium in the lye of the oil-alkali mixer injected into the liquid film mass transfer reactor is 150ppm, and the adsorbent adopted is inorganic activated carbon loaded with metal zinc and nickel. Salt and water-soluble inorganic compound acid. After testing, the phenol...

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PUM

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Abstract

The invention provides a method for producing clean solvent oil without hydrogen, which is characterized in that the raw solvent oil is treated in a phenol and oxygen removal unit, a mercaptan removal unit, a nitrogen removal unit and an adsorption unit in sequence. The method is simple in process flow and low in device investment, not only can effectively remove the compounds bringing about odors and unstable colors from the solvent oil, such as mercaptan, basic nitrogen and phenol and oxygen, but also can adapt to variation of the property and the treatment capacity of the raw materials, and the adsorbent has long service life and low production cost, thus obtaining the colorless and tasteless clean solvent oil.

Description

technical field [0001] The invention relates to a method for producing cleaning solvent oil by a non-hydrogenation method. technical background [0002] Solvent oil is one of the five major categories of petroleum products. It is a basic solvent and is widely used in paints, coatings, viscose, edible oil, printing ink, leather, pesticides, insecticides, rubber, cosmetics, spices, chemical polymerization, Medicine and cleaning of electronic components, etc. According to its distillation range, it can be roughly divided into naphtha type (final boiling point≯200℃), and its main products are 6# (extraction solvent oil), 120# (rubber solvent oil), 200# (paint and coating solvent oil) ), etc.; kerosene type (final boiling point ≯ 280 ° C), its main products are D series solvent oils such as D60 (metal rolling oil), D80 (aerosol), D100 (dry cleaning agent); diesel oil type (final boiling point ≯350℃), its main products are color ink solvent oil, 3# and 5# industrial white oil, e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/12
Inventor 潘罗其袁红星曾光乐余卫勋颜刚杜建文童莉刘芳王东生
Owner CHINA PETROCHEMICAL CORP
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