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Processing method of inferior heavy oil

A low-quality heavy oil and processing method technology, which is applied in the petroleum industry, hydrotreating process, and hydrocarbon oil treatment, can solve the problems of low efficiency and low utilization of alkali metals, and achieve extended operation cycle, favorable contact, and accelerated separation effect of effect

Active Publication Date: 2022-07-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The reaction of alkali metals with heteroatoms and / or part of one or more heavy metals, that is, the alkali metal desulfurization method can improve the quality of raw materials, but the current reaction process efficiency of this method Low, especially the utilization rate of alkali metal is not high, the product contains unreacted alkali metal, and the unreacted alkali metal in the product needs to be further processed subsequently

Method used

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  • Processing method of inferior heavy oil
  • Processing method of inferior heavy oil
  • Processing method of inferior heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0043] The raw oil is separated into light distillate raw materials and heavy distillate raw materials through the fractionation tower at 360 ° C as the cutting point; the light distillate raw materials and hydrogen enter the hydrotreating unit, and undergo hydrodesulfurization and hydrodenitrogenation under mild operating conditions. Wait for the hydrotreating reaction to obtain the oil produced by hydrotreating; the heavy distillate raw materials and sodium metal enter the stirring reactor, and undergo hydrodeoxygenation, hydrodemetallization, hydrodesulfurization and other reactions under the action of hydrogen, and the obtained materials undergo After separation by the cyclone separator, liquid-phase products, solid mixtures such as sodium sulfide and metals are obtained; the liquid-phase products and the oil produced by hydroprocessing enter the fractionation tower for fractionation to obtain naphtha, diesel oil, wax oil and other products.

Embodiment 3-4

[0045] The raw oil is separated into light distillate raw materials and heavy distillate raw materials through a fractionation tower at 375 °C. Wait for the hydrotreating reaction to obtain hydrotreating oil; part of the hydrotreating oil, aluminum tripolyphosphate and silicon phosphate curing agent (ratio 3:4:4) are stirred and mixed in a stirring tank to obtain a modified hydrotreating oil. The oil produced by hydroprocessing is mixed with the heavy distillate raw material in a stirred tank to prepare the heavy distillate raw material, wherein the ratio of the modified hydrotreated oil to the heavy distillate raw material is 1:9; the heavy distillate raw material and the metal sodium are mixed together The reactor is used for hydrodeoxygenation, hydrodemetallization, hydrodesulfurization and other reactions under the action of methane. The obtained materials are separated by a cyclone to obtain liquid-phase products, solid mixtures such as sodium sulfide and metals; liquid-ph...

Embodiment 5-6

[0060] The raw oil is separated into light distillate raw materials and heavy distillate raw materials through a fractionation tower at 360 °C as the cutting point; Hydrodesulfurization and other reactions, the obtained materials are separated by a cyclone separator to obtain liquid-phase products, solid mixtures such as sodium sulfide and metal; and other products.

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Abstract

The invention discloses an inferior heavy oil hydrotreating method. The method comprises the following steps: (1) separating inferior heavy oil into light distillate oil and heavy distillate oil through a fractionating tower; (2) optionally carrying out hydrotreating reaction on the light distillate oil obtained in the step (1) to obtain hydrotreated oil; (3) contacting the heavy distillate oil obtained in the step (1) with alkali metal to carry out alkali metal desulfurization reaction; and (4) separating the material after the reaction in the step (3) to obtain a liquid-phase product, optionally mixing the liquid-phase product with the oil generated by hydrotreatment in the step (2) or the light distillate oil in the step (1), and separating by a fractionating tower to obtain naphtha, diesel oil and wax oil. The method can convert inferior and cheap heavy oil into a high-quality raw material, and the process is simple, safe and reliable.

Description

technical field [0001] The invention relates to the field of heavy oil processing and utilization, in particular to a low-quality heavy oil processing method. Background technique [0002] The heavy and inferior quality of crude oil in the world is becoming more and more serious, and the market demand for light oil products continues to grow. Therefore, residual oil hydrogenation, as an effective means of residual oil upgrading and lightening, has become one of the development priorities of the oil refining industry. At present, the most commonly used residue hydrogenation technologies in the industry include fixed bed technology and ebullated bed technology. The ebullated bed hydrogenation process has the following advantages: it can process heavy and inferior raw materials with high metal content and high residual carbon value; Controlled and uniform, pressure drop and constant; catalyst can be added and withdrawn online, so catalyst performance can be kept constant throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/202C10G2300/205C10G2300/4006C10G2300/4012C10G2300/4018C10G2300/70C10G2300/80Y02P30/20
Inventor 彭冲乔凯王刚方向晨吴子明
Owner CHINA PETROLEUM & CHEM CORP
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