Hydrogenation conversion integrated method for high-nitrogen and high-aromatic hydrocarbon oil

A technology of hydroconversion and high aromatics, which is applied in the integration of hydro-upgrading process and the integration of two-stage or three-stage hydro-upgrading process of low-temperature coal tar, and can solve problems such as unreported technical solutions

Inactive Publication Date: 2011-08-24
何巨堂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Technical scheme of the

Method used

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  • Hydrogenation conversion integrated method for high-nitrogen and high-aromatic hydrocarbon oil
  • Hydrogenation conversion integrated method for high-nitrogen and high-aromatic hydrocarbon oil
  • Hydrogenation conversion integrated method for high-nitrogen and high-aromatic hydrocarbon oil

Examples

Experimental program
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Effect test

Embodiment 1

[0242] The annual start-up of the device is calculated as 8000 hours / year.

[0243] In the second hydrogenation reaction process, the hydrocarbon feedstock F2 is medium-temperature coal tar distillate oil with a boiling range of 165-375°C, the sulfur content of F2 is 0.45% by weight, the nitrogen content is 0.57% by weight, and the flow rate of F2 is 30t / h. The unit hydrogen consumption (including dissolved hydrogen) of process raw material hydrocarbon is 4.65% (15510Nm 3 / h).

[0244] The hydrogenation reaction conditions of the first-stage hydrogenation upgrading process are: high pressure conditions with a temperature of 320-400°C and a pressure of 16.0-18.0MPa, and the hydrogen volume at the inlet of the first reactor is 61870Nm 3 / h (the volume ratio of hydrogen to oil is 2000), the first-stage hydro-upgrading process uses catalyst beds such as hydrodemetallization, deoxidation, olefin saturation, desulfurization, denitrogenation, and aromatic saturation.

[0245] The F...

Embodiment 2

[0259] Based on Example 1, the separation part of the second hydrogenation reaction effluent E2 adopts a hot high-pressure separation process, the temperature of the second hot high-separator is 260 ° C, and the second hot high-separation oil HL2 and the second cold high-separation oil LL2 enter the first In the first reaction part, the first reactor is jointly modified.

Embodiment 3

[0261] Based on Example 2, the second hydrocarbon feedstock F2 is a medium-temperature coal tar distillate with a boiling range of 165-505°C, and the F2 hydroconversion process adopts a three-stage hydroconversion process, the first stage (the second hydrogenation reaction part R2) It is the hydrogenation upgrading process, the second stage (the first hydrogenation reaction part R1) is the supplementary hydrogenation refining process, and the third stage (the third hydrogenation reaction part R3) is the gentle hydrogenation of the wax oil obtained from the fractionation part FRAC During the cracking process, the third hydrogenated oil E3 enters the first hydrogenation reaction part R1. The operating pressure of the third hydrogenation reaction part R3 is higher than the operating pressure of the first hydrogenation reaction part R1 by 0.3 MPa.

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Abstract

The invention discloses a hydrogenation conversion integrated method for high-nitrogen and high-aromatic hydrocarbon oil, which is applicable to a coal tar hydrogenation conversion process. In the method, new hydrogen fluoride and second hydrogenated oil undergo a first hydrogenation conversion process in a first reaction part R1 to form a first high-pressure hydrogen-enriched gas V1 and first hydrogenated oil L1; and at least part of V1 is delivered to a second reaction part R2 for the coal tar raw material, and a second reaction effluent E2 is separated in a second high-pressure separation part S2 to form a second high-pressure hydrogen-enriched gas V2 and second hydrogenate oil L2. Furthermore, the first hydrogenated oil L1 is separated in a distillation part FRAC to form wax oil VS, and the third hydrogenated oil of the VS is delivered to R1 or R2. In the invention, high-pressure operation steps (compressors, heating furnaces and the like) are saved, a two-stage combined process of primary high-pressure hydrogenation modification and secondary medium-pressure hydrogenation modification is formed, and the method is particularly suitable for a process for producing high-quality light oil products (diesel and naphtha) by two-stage or multi-stage hydrogenation conversion of medium/low-temperature coal tar.

Description

technical field [0001] The present invention relates to an integrated method for hydrogenation conversion of high-nitrogen and high-aromatic hydrocarbon oil; in particular, the present invention relates to an integrated method for the hydro-upgrading process of coal tar hydro-upgraded oil produced by using a new hydrogen stream; more particularly The present invention relates to an integrated method for completing the two-stage or three-stage hydro-upgrading process of medium-low temperature coal tar by using a new hydrogen stream. Background technique [0002] As we all know, the hydrocarbon hydroconversion process is a hydrogen-consuming conversion process of hydrocarbon feedstock in the presence of hydrogen. The hydrocarbon feedstock can be hydrocarbons from petroleum or oil shale or oil sands or coal. The fractions of feedstock hydrocarbons range from gasoline, From kerosene, diesel oil, wax oil to residual oil, in most cases the above-mentioned raw materials contain het...

Claims

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Application Information

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IPC IPC(8): C10G67/00
Inventor 何巨堂
Owner 何巨堂
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