Mild hydrogenation purifying method for coal direct liquefaction oil

A technology of direct coal liquefaction and hydrogenation upgrading, which is applied in the fields of hydrogenation treatment process, preparation of liquid hydrocarbon mixture, petroleum industry, etc., can solve the problems of high one-time investment and complicated process, and achieve the effect of improving economy

Inactive Publication Date: 2008-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of this method is relatively complicated, and the one-time investment is high

Method used

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  • Mild hydrogenation purifying method for coal direct liquefaction oil
  • Mild hydrogenation purifying method for coal direct liquefaction oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this example, coal direct liquefied oil T is used as the raw material, and the basic properties of the raw material are listed in Table 1. It can be seen from Table 1 that the nitrogen content and oxygen content of direct coal liquefaction oil T are relatively high, respectively 2620μg / g and 2.68% by weight, and the density is relatively high, reflecting its high aromatic content. The bromine value is 42.9gBr / 100g, reflecting It contains more olefins.

[0041] In the stable hydrogenation unit, the coal direct liquefied oil T is mixed with hydrogen, enters the stable hydrogenation reactor, and successively contacts the hydrogenation protection agent RGC-1 and the hydrogenation treatment catalyst RTC-32 to react, the hydrogenation protection agent and the hydrogenation treatment The loading volume ratio of the catalyst is 1:4, and the reaction products are separated and fractionated to obtain naphtha fraction and diesel fraction, and the obtained diesel fraction enters...

Embodiment 2

[0044] In this example, direct coal liquefied oil S is used as the raw material, and the basic properties of the raw material are listed in Table 1. In the stable hydrogenation unit, the direct coal liquefied oil S is mixed with hydrogen, enters the stable hydrogenation reactor, and successively contacts the hydrogenation protection agent RGC-1 and the hydrogenation catalyst RTC-32 to react, the hydrogenation protection agent and the hydrogenation treatment The loading volume ratio of the catalyst is 1:6, and the reaction products are separated and fractionated to obtain naphtha fraction and diesel fraction, and the obtained diesel fraction enters the hydroreforming unit, and then enters the hydroreforming reactor after being mixed with hydrogen , and react with the hydrogenation upgrading catalyst RCC-2, and the reaction product is separated and fractionated to obtain a diesel product. The main operating conditions of the stable hydrogenation reactor and the hydroupgrading re...

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Abstract

The invention relates to a mild hydrogenation extraction method for direct coal liquefaction oil, which comprises: blending the direct coal liquefaction oil with hydrogen to put into a steady hydrogenation reactor, carrying out desulfurization, denitrification, olefin saturation and aromatics saturation reaction under the action of a hydrotreating catalyst, separating and distilling the reaction product to obtain naphtha cut and diesel distillate, blending the obtained diesel distillate with the hydrogen, putting the mixture into a hydrogenation modification reactor to contact and react with a hydrogenation modification catalyst, separating and distilling the reaction product to obtain the diesel product. The method provided by the invention effectively combines a steady hydrogenation unit with a hydrogenation modification unit, and can product the diesel product with more than 45 of cetane number. The method has the advantages of mild operation condition, simple process, low investment, and low operation expense.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of liquid hydrocarbons obtained by destructive hydrogenation of coal. More specifically, a method for producing high-quality diesel products from coal direct liquefaction oil. Background technique [0002] Relatively small oil reserves and rich coal reserves are the characteristics of my country's energy composition. With the development of the economy, the contradiction between oil supply and demand has become increasingly prominent, and the dependence on oil imports has continued to increase. Making full use of my country's abundant coal resources and converting them into liquid oil through a series of chemical changes is one of the important ways to solve the contradiction between my country's oil supply and demand and ensure my country's energy security. This process is commonly referred to as coal liquefaction. According to different processing routes, coal liquefaction is divided int...

Claims

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Application Information

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IPC IPC(8): C10G1/06C10G65/04
Inventor 董建伟胡志海蒋东红熊震霖张毓莹辛靖
Owner CHINA PETROLEUM & CHEM CORP
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