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A method for producing gasoline and clean diesel from coal-based inferior raw materials

A low-quality, raw material technology, applied in the petroleum industry, processing hydrocarbon oil, hydrotreating process, etc.

Active Publication Date: 2018-02-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main purpose of this method is to produce fuel oil, but the cetane index of the diesel fraction produced by this method is <40

Method used

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  • A method for producing gasoline and clean diesel from coal-based inferior raw materials
  • A method for producing gasoline and clean diesel from coal-based inferior raw materials
  • A method for producing gasoline and clean diesel from coal-based inferior raw materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] According to the method described in the present invention: after mixing the coal-based inferior raw material with hydrogen, introduce in turn containing 10RG-20, RG-30A, RG-30B, RG-1, large particle size RDM-35 (diameter is 2.5mm), small The demetallization unit of particle size RDM-35 (diameter is 1.1mm), large particle size RDM-35 (diameter is 2.5mm), small particle size RDM-35 (diameter is 1.1mm) and RN-32V reacts, wherein, The loading volume ratio of large particle size RDM-35 and small particle size RDM-35 in each stage of the demetallization unit is 1:2, and the RN-32V catalyst accounts for 12% of the total catalyst volume in the demetallization unit; The reaction product of the demetallization unit and the self-recycled tail oil from the mild hydrocracking unit are mixed with hydrogen and then introduced into the mild hydrocracking unit containing RN-32V and catalyst Φ in sequence, wherein the mild hydrocracking unit The loading volume ratio of the RN-32V and th...

Embodiment 2

[0134] This embodiment is carried out using the same process flow as in Example 1, the difference is that the RN-32V catalyst in the demetallization unit of this embodiment accounts for 15% of the total volume of the catalyst in the demetallization unit, and the demetallization catalyst adopts Three-stage circulation (big-small-big-small-big-small) is used for filling, and the filling volume ratio of large particle size RDM-35 and small particle size RDM-35 in each stage is 1:3, and The total volume of the demetallization catalyst is the same as in Example 1. Table 4 shows the main reaction conditions of the demetallization unit, mild hydrocracking unit, extraction unit, deep hydroprocessing unit and hydrocracking unit. Table 5 shows the yield and main properties of clean naphtha product, clean diesel product, light gasoline fraction and heavy gasoline fraction.

Embodiment 3

[0136] This embodiment is carried out using the same process flow as in Example 2, the difference is that the RN-32V catalyst in the demetallization unit of the present embodiment accounts for 8% of the total volume of the catalyst in the demetallization unit, and the demetallization catalyst adopts Two-stage circulation (big-small-big-small) is used for loading, the volume ratio of the large particle size RDM-35 and small particle size RDM-35 in each stage is 1:4, and the demetallization catalyst The total volume is the same as in Example 1. Table 4 shows the main reaction conditions of the demetallization unit, mild hydrocracking unit, extraction unit, deep hydroprocessing unit and hydrocracking unit. Table 5 shows the yield and main properties of clean naphtha product, clean diesel product, light gasoline fraction and heavy gasoline fraction.

[0137]

[0138] Table 4

[0139] table 5

[0140] The yield and properties of each fraction of the product

[0141]...

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Abstract

The invention relates to the field of oil refining, and discloses a method for producing gasoline and clean diesel oil from a coal based inferior raw material, wherein the method comprises the steps: the coal based inferior raw material and a hydrogen-containing material flow are mixed, then introduced into a metal removal unit and subjected to a reaction; a reaction product and tail oil of the metal removal unit are mixed with a hydrogen-containing material flow, then the mixture is introduced into a mild hydrocracking unit, and naphtha, intermediate fraction oil and tail oil are obtained; the intermediate fraction oil and a diesel oil fraction from the hydrocracking unit are introduced into an aromatic extraction unit and are separated to obtain raffinate oil and extract oil; the raffinate oil and the naphtha are introduced into a deep hydrotreating unit and undergo a reaction, and the clean diesel oil is obtained; and the extract oil is introduced into the hydrocracking unit and undergoes a reaction, a diesel oil fraction and gasoline are obtained, and the diesel oil fraction is introduced into the aromatic extraction unit for circulation. The method for processing the coal based inferior raw material can effectively convert the coal based inferior raw material into the high-octane-number gasoline blending component and the low-sulfur and high-cetane-number clean diesel oil component, and also can give consideration to production of a part of naphtha.

Description

technical field [0001] The invention relates to the field of oil refining, in particular to a method for producing high-octane gasoline and clean diesel blending components from coal-based inferior raw materials. Background technique [0002] With the continuous and high-speed development of social economy, my country's demand for petroleum products is also increasing. However, petroleum is a non-renewable energy source and is facing a crisis of depletion. In contrast, China has relatively abundant coal reserves, so producing liquid fuel from coal has become a basic direction of coal processing and utilization. On the other hand, with the rapid growth of the international and domestic steel industry, the coking industry is showing a high growth trend. Therefore, the output of coal tar is increasing, and the clean processing and effective utilization of coal tar are becoming more and more important. [0003] In order to improve the utilization value of coal-based inferior r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
Inventor 蒋东红任亮毛以朝辛靖梁家林龙湘云胡志海
Owner CHINA PETROLEUM & CHEM CORP
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