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Coal directly liquefied oil composition and preparation method thereof

A technology for direct coal liquefaction oil and composition, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., and can solve the problems of blending base oil without polyalphaolefin

Active Publication Date: 2019-05-31
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the literature and patents reported so far, there is no research on blending coal direct liquefaction oil with polyalphaolefin, especially there is no research on blending base oil with polyalphaolefin whose viscosity is much different from that of base oil

Method used

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  • Coal directly liquefied oil composition and preparation method thereof
  • Coal directly liquefied oil composition and preparation method thereof
  • Coal directly liquefied oil composition and preparation method thereof

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preparation example Construction

[0028] In order to solve the above problems, the present invention provides a method for preparing a coal direct liquefaction oil composition, such as figure 1 As shown, the preparation method includes the following steps: S1, catalytic hydrogenation of direct coal liquefaction oil to obtain hydrogenated product oil; S2, distillation and cutting of hydrogenated product oil to obtain multiple narrow fractions; and S3, the The narrow distillate oil is blended with polyalphaolefin to obtain a coal direct liquefaction oil composition.

[0029] The ratio of the viscosity of the narrow distillate oil to the polyalphaolefin used for blending is between about 10:1 and about 1:1000, for example, the ratio of the viscosity of the narrow distillate oil to be blended and the polyalphaolefin can be about 10:1 , about 1:1, about 1:2, about 1:5, about 1:10, about 1:20, about 1:30, about 1:40, about 1:50, about 1:100, about 1:200 , about 1:300, about 1:400, about 1:500, about 1:1000, etc., i...

Embodiment 1

[0058] Embodiment 1: the allocation of coal liquefied oil composition

[0059] The solvent oil produced by direct liquefaction of 1# coal in Table 1 is used as the raw material. After the raw material oil and hydrogen are mixed, they enter the catalyst bed (the catalyst is Cat1 in Table 3), and then the hydrogenated products are cut at different temperature sections, and the obtained hydrogenated The hydrogen product was distilled under reduced pressure, and the narrow fractions obtained from the distillation were blended with 1#PAO, 2#PAO, and 3#PAO in Table 2 to finally obtain multiple coal direct liquefaction oil compositions. The experimental conditions and the properties of the obtained products are shown in Table 4.

[0060] Table 4, the coal direct liquefaction oil composition prepared by the present invention

[0061]

[0062] As above, polyalphaolefins can be selected over a broad range of kinematic viscosities, wherein the ratio of the viscosity of the narrow dis...

Embodiment 2

[0065] Embodiment 2: the allocation of coal liquefied oil composition

[0066] Using the 3# coal direct liquefaction distillate in Table 1 as the raw material, the raw material oil and hydrogen are mixed and enter the catalyst bed (the catalyst is Cat2 in Table 3), and then the hydrogenated product is cut at different temperature sections, and the obtained hydrogenated The product was distilled under reduced pressure, and the narrow fractions obtained from the distillation were blended with 3#PAO, 4#PAO, and 5#PAO in Table 2 to finally obtain multiple coal direct liquefaction oil compositions. The experimental conditions and the properties of the obtained products are shown in Table 5.

[0067] Table 5, the coal direct liquefaction oil composition prepared by the present invention

[0068]

[0069]

[0070] As above, the polyalphaolefin can be selected over a wide range of kinematic viscosities such that the viscosity ratio of the narrow distillate to be blended and the...

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Abstract

The invention provides a coal directly liquefied oil composition and a preparation method thereof. The preparation method comprises following steps: step one, catalytically hydrogenating coal directlyliquefied oil to obtain a hydrogenated oil product; step two, cutting the hydrogenated oil product by steam to obtain a plurality of narrow distillate oils; and step three, blending the narrow distillate oils with poly(alpha-olefin) to obtain the coal directly liquefied oil composition. The viscosity index, flash point, and low temperature properties of coal directly liquefied oil are improved effectively.

Description

technical field [0001] The invention relates to the technical field of direct coal liquefaction oil, in particular, the invention relates to a preparation method of a direct coal liquefaction oil composition and a direct coal liquefaction oil composition produced by the preparation method of the invention. Background technique [0002] my country is rich in coal resources, but relatively short of oil and natural gas. Therefore, for a long period of time in the future, coal will still be the main energy source in our country. In recent years, the pace of the domestic coal-to-oil industry is accelerating, and direct coal liquefaction is one of the effective ways to solve the oil shortage and ensure the security of energy supply. [0003] However, due to the particularity of raw materials and processing technology in the production process, compared with mineral oil, direct coal liquefied oil shows certain differences in composition distribution and physical and chemical indica...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 曹雪萍单贤根
Owner CHNA ENERGY INVESTMENT CORP LTD
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