Method for preparing gasoline and diesel by oil washing hydrogenation

A technology for hydrogen preparation and oil washing, which is applied in the production field of high-quality gasoline and diesel products, and achieves the effects of low impurity content, large improvement range and good quality.

Inactive Publication Date: 2009-07-22

胜帮科技股份有限公司

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Problems solved by technology

[0007] At present, there is no literature report on hydr...

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Abstract

The invention discloses a method using the washing oil produced by the coal tar to prepare gasoline and diesel with hydrogen, which is essentially characterized in that the washing oil produced during the coal carbonization process is mixed with the hydrogen to obtain the hydrogenation oil through a reactor filled with protective agent, demetalization activator, hydrogenation refined activator and/or hydrogenation modified activator; the hydrogenation oil enters into a high-pressure separator; and the hydrogen obtained at the upper part is recycled to use, and the materials at the lower part are stripped or fractionated to obtain gasoline (naphtha) and diesel. The method can effectively produce high-quality and clean diesel products with washing oil.

Application Domain

Refining to eliminate hetero atoms

Technology Topic

Coal tarNaphtha +6

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Examples

Experimental program(1)

Example Embodiment

[0017] The solutions and effects of the present invention will be described in more detail below in conjunction with the drawings and embodiments.

[0018] like figure 1 As shown, in the following preferred embodiments of the present invention, the purified washed oil 1 is first mixed with hydrogen 2 and enters the hydrogenation reactor 3 to obtain the hydrogenated oil 4 and enters the high-pressure separator 5 for gas-liquid separation, and the obtained gas 6 is recycled after being pressurized by the circulating hydrogen compressor 7, and the separated liquid 9 enters the stripping tower 10 (or fractionating tower) for fractional distillation according to the amount of gasoline (naphtha) to obtain gas products, gasoline (naphtha) 11, Diesel 12.

[0019] Table 1 lists the properties of the washing oil raw material used in the following examples 1-4.

[0020] Table 1 Properties of washing oil

[0021] Raw oil Wash oil 1 Wash oil 2 Distillation range, ℃ 230—300 230—280 Density (20℃), g/cm 3 1.05 1.02 cetane number 8 6 Elemental composition, m% sulfur 0.80 0.45 nitrogen 0.70 0.60 Metal content, μg/g iron 20 10 calcium 3.0 2.2 magnesium 0.6 0.5 Aromatic hydrocarbons + colloids, m% 95.2 97.0

[0022] Process conditions are listed in Table 2, and product properties are listed in Table 3.

[0023] Table 2 Process conditions

[0024] Example 1 Example 2 Example 3 Example 4 Raw oil Wash oil 1 Wash oil 1 Wash oil 2 Wash oil 2

[0025] Table 3 Main properties of the product

[0026] Example 1 Example 2 Example 3 Example 4 gasoline (naphtha) Yield, wt% 1.5 18.5 5.0 22.1 Density (20℃), g/cm 3 0.695 0.691 0.692 0.689 Distillation range, °C (ASTM D86) Initial boiling point/10% 82/115 76/110 79/114 73/108 50％/90％ 133/168 130/166 131/167 129/165 do it 185 185 185 185

[0027] Sulfur content, μg/g <0.5

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Method for preparing gasoline and diesel by oil washing hydrogenation

A technology for hydrogen preparation and oil washing, which is applied in the production field of high-quality gasoline and diesel products, and achieves the effects of low impurity content, large improvement range and good quality.

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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