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Method for producing clean fuel oil employing ethylene bottom oil and heavy benzol

A technology for ethylene tar and fuel oil, which is applied in the fields of hydrocarbon oil treatment products, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of environmental pollution, irritating odor, low quality, etc., and achieves simple process flow, simple processing steps, and improved The effect of added value

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The methods disclosed in CN102041091A, CN101724423A, CN101724458A and CN101724448A are to first divide ethylene tar into light and heavy fractions, and then use a fixed-bed hydrotreating process to produce clean fuel oil. These methods all have problems such as poor quality of light diesel oil and long processing flow
In addition, because heavy benzene contains a certain amount of heterocyclic compounds such as O, S, N, etc., as solvent oil, it has a pungent odor in addition to poor stability. When it is directly used as fuel oil, it is not only of low quality but also pollutes the environment. There are problems of poor product quality, lack of competitiveness or environmental pollution

Method used

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  • Method for producing clean fuel oil employing ethylene bottom oil and heavy benzol
  • Method for producing clean fuel oil employing ethylene bottom oil and heavy benzol
  • Method for producing clean fuel oil employing ethylene bottom oil and heavy benzol

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Embodiment 1

[0041] This embodiment adopts figure 1 The process flow, thermal cracking reaction process conditions of the mixed raw material of ethylene tar and heavy benzene, and the yields of the gas products, liquid products and residues are shown in Table 3. The liquid product takes 160°C as the cut point to obtain the heavy fraction. The hydrofinishing / hydrocracking process conditions of the heavy fraction are shown in Table 4, wherein the volume ratio of the hydroprotecting agent, the hydrofinishing catalyst, and the hydrocracking catalyst is 10:60:30. Gasoline and diesel fractions were obtained from hydrogenated oil with a cut point of 180°C. The properties of the obtained gasoline fraction and diesel fraction are shown in Table 5.

Embodiment 2

[0043] This embodiment adopts figure 2 The process flow, thermal cracking reaction process conditions of the mixed raw material of ethylene tar and heavy benzene, and the yields of the gas products, liquid products and residues are shown in Table 3. The process conditions of the hydrofining / hydrocracking of the liquid product are shown in Table 3, wherein the volume ratio of the hydrotreating agent, the hydrofining catalyst, and the hydrocracking catalyst is 15:50:35. Gasoline and diesel fractions were obtained by reaction at 180°C as the cut point for the resulting oil produced by hydrogenation. The properties of the obtained gasoline fraction and diesel fraction are shown in Table 5.

Embodiment 3

[0045] This embodiment adopts figure 2 The process flow, thermal cracking reaction process conditions of the mixed raw material of ethylene tar and heavy benzene, and the yields of the obtained gas products, liquid products and residues are shown in Table 3. The liquid product hydrofinishing / hydrocracking process conditions are shown in Table 3, wherein, the volume ratio of hydrotreating agent, hydrofinishing catalyst, and hydrocracking catalyst is 15:55:30, and the resulting oil obtained by hydrogenation is 180 °C is the cut point to obtain gasoline and diesel fractions. The properties of the obtained gasoline fractions and diesel fractions are shown in Table 5.

[0046] Table 1 Properties of ethylene tar

[0047]

[0048] Table 2 Properties of heavy benzene

[0049]

[0050] Table 3 Thermal cracking process conditions and product properties

[0051]

[0052] Table 4 Hydrogenation process conditions

[0053]

[0054] Table 5 Properties of diesel fraction...

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Abstract

The invention discloses a method for producing fuel oil employing ethylene bottom oil and heavy benzol. The method comprises the following steps: mixing ethylene bottom oil with heavy benzol, and processing in a thermal cracking reaction zone; condensing obtained pyrolysis gas and feeding to a separator for gas-liquid separation to respectively obtain a gas product and liquid-phase oil, wherein the residues generated in the reaction process are left in the thermal cracking reaction zone, and can be used as solid fuel; collecting a gas product as a fuel gas; processing the oil-phase oil in a hydrotreating reaction zone and a hydrocracking reaction zone, and separating the obtained hydrocracking product to obtain a gasoline fraction and a diesel fraction; or carrying out fractionation on the oil-phase oil to obtain a light fraction and a heavy fraction, processing the obtained heavy fraction in the hydrotreating reaction zone and the hydrocracking reaction zone, and separating the obtained hydrocracking product to obtain the gasoline fraction and the diesel fraction. According to the method disclosed by the invention, the process is simple; the whole ethylene bottom oil fraction can be fully utilized; the yield of the light fuel can be not lower than 85%; the obtained diesel is good in quality; and the yield of ethylene and propylene is improved.

Description

technical field [0001] The invention relates to a method for producing fuel oil, in particular to a method for producing fuel oil by treating ethylene tar and heavy benzene with a thermal cracking / hydrogenation combined process. Background technique [0002] At present, the world's oil resources are increasingly scarce and the price is increasing. On the other hand, with the improvement of people's living standards, the demand for clean motor transportation fuels is increasingly strong. This contradiction makes it necessary for refineries to reduce emissions and increase efficiency, and it is of practical significance to convert the by-products of refineries that have not been fully utilized into clean fuel oil. [0003] Ethylene tar is a high-temperature condensation product of ethylene cracking raw materials and products in the steam cracking process. Its initial boiling point is 170-260°C, and its final boiling point is >600°C, generally 600-700°C. It belongs to the he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/04C10G69/06
CPCC10G55/04C10G69/06C10G2400/02C10G2400/04
Inventor 许杰关明华孙凯
Owner CHINA PETROLEUM & CHEM CORP
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