Method for producing low-aromatics solvent oil by hydrogenation

A technology of solvent oil and hydrogenation treatment, which is applied in the petroleum industry and the treatment of hydrocarbon oil, etc. It can solve problems such as difficult to guarantee the operation cycle, easy to be poisoned and deactivated, and unable to meet the quality index requirements of high-grade low-aromatic solvent oil, etc.

Active Publication Date: 2011-01-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the operating conditions of this patent are relatively moderate, it can only produce medium and low-grade solvent oil products, which cannot meet the quality index requirements of high-grade low-aromatic solvent oil; and nickel-based catalysts are easily poisoned and deactivated by impurities such as sulfur and nitrogen. Difficult to guarantee

Method used

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  • Method for producing low-aromatics solvent oil by hydrogenation
  • Method for producing low-aromatics solvent oil by hydrogenation
  • Method for producing low-aromatics solvent oil by hydrogenation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The kerosene fraction raw material 1 goes through the heating furnace to reach the required temperature and fully mixes and dissolves the hydrogen in the SH-type static mixer, and then enters the hydrogenation reactor. The reaction conditions are: hydrogen partial pressure 12.8MPa, volume space velocity 0.7h -1 , The reaction temperature is 286° C., and the volume ratio of hydrogen to oil is 150:1. The raw material oil properties and product properties are listed in Table 2.

[0029] It can be seen from Table 2 that the sulfur and nitrogen content of the solvent oil product can be reduced to below 1 μg / g, and the aromatic hydrocarbon content is less than 0.05%.

Embodiment 2

[0031] The kerosene fraction raw material 2 is fully mixed with hydrogen and enters the hydrogenation reactor after passing through the heating furnace. The gas-liquid mixer adopts SK type static mixer. The reaction conditions are: hydrogen partition pressure 12.5MPa, volume space velocity 0.6h -1 , The reaction temperature is 281° C., and the volume ratio of hydrogen to oil is 140:1. The raw material oil properties and product properties are listed in Table 3.

[0032] It can be seen from Table 3 that the sulfur and nitrogen content of the solvent oil product can be reduced to less than 1 μg / g, and the aromatic hydrocarbon content is less than 0.05% by using this process technology.

Embodiment 3

[0034] The kerosene fraction raw material 3 is fully mixed with hydrogen and enters the hydrogenation reactor after passing through the heating furnace. The reaction conditions are: hydrogen partial pressure 13.6MPa, volume space velocity 0.8h -1 , The reaction temperature is 304°C, and the volume ratio of hydrogen to oil is 170:1. Half of the hydrogen is mixed with the raw materials through the SL gas-liquid mixer, and the other half is directly fed into the reactor through the pipeline. The raw material oil properties and product properties are listed in Table 4.

[0035] It can be seen from Table 4 that the sulfur and nitrogen content of the solvent oil product can be reduced to less than 1 μg / g, and the aromatic hydrocarbon content is less than 0.05%.

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Abstract

The invention relates to a method for producing low-aromatics solvent oil by hydrogenation. The method comprises the following steps of: passing raw material oil through a heating furnace, then fully mixing the raw material oil and hydrogen gas in an oil-gas mixer, and contacting with a hydrogenation catalyst in a lower hydrogen-oil volume ratio and under milder process conditions to undergo the common hydrogenated purification reaction. Compared with the conventional hydrogenated purification process, the method can achieve the same effect as the conventional purification process under milder process conditions. By the method, the low-sulfur and low-aromatics solvent oil products can be produced. In addition, the method also has the advantages of simple process flow, stable operation, high product properties and low energy consumption, and the new establishment of a hydrogenation device and the modification of the original device are both ok.

Description

technical field [0001] The invention relates to a method for producing low-aromatic solvent oil by hydrogenation, in particular to a process for producing low-sulfur and low-aromatic clean solvent oil by hydrogenating raw materials of paraffin-based kerosene fractions. Background technique [0002] Solvent oil products are one of the five major categories of petroleum products. Low aromatic content (low aromatic) solvent oil can be used as dry cleaning solvent, metal cleaning agent and processing solvent, aerosol insecticide and air freshener, leather polish and solvent for textile printing, food packaging oil, edible oil processing Solvents and solvents for preparing cosmetics are widely used in the fields of fine chemicals and light metal processing. At present, most of the low-aromatic high-grade solvent oil products urgently needed in the domestic market are mostly imported from abroad. Therefore, the added value of low-aromatic high-grade solvent oil products is very ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G49/00C10G49/04
Inventor 徐大海牛世坤刘继华李扬王震
Owner CHINA PETROLEUM & CHEM CORP
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