Method for processing ethylene tar

A technology of ethylene tar and processing method, which is applied in tar processing, petroleum industry, etc., can solve the problems that the ethylene tar fraction cannot be processed and has not been effectively processed, so as to achieve safe and stable operation, increase saturation rate, and increase added value Effect

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only utilizes the light fraction which accounts for a small proportion in ethylene tar, and more than 80% of the ethylene tar fraction has not been effectively treated; at the same time, the hydrorefining conditions it provides cannot handle ethylene with a boiling point higher than 280 ° C. tar fraction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The properties of the light and heavy fractions of ethylene tar used are shown in Table 2 and Table 5. The embodiment adopts a serial flow process and two reactors, the first reactor is equipped with hydrogenation protection agent FZC-103 and hydrofining catalyst 3936, and the second reactor is equipped with hydrogenation carbon removal catalyst HDC-1 The first hydrocracking catalyst loaded in the middle is a hydrocracking catalyst containing amorphous silica-alumina and Y molecular sieve, and the second hydrocracking catalyst loaded in the lower part is a hydrocracking catalyst containing amorphous silica-alumina and β molecular sieve. In Example 1, the volume ratio of FZC-103: 3936: HDC-1: the first hydrocracking catalyst: the second hydrocracking catalyst is as follows: 12: 13: 13: 31: 31, the operating conditions and reaction results are shown in the table 3.

Embodiment 2

[0042] Compared with Example 1, the used FZC-103: 3936: HDC-1: the first hydrocracking catalyst: the volume ratio of the second hydrocracking catalyst becomes: 8: 15: 20: 30: 27, operating conditions and The reaction results are shown in Table 3. Among them, FC-18 is produced by the No. 3 Petroleum Plant of PetroChina Fushun Petrochemical Company.

Embodiment 3

[0044] Compared with Example 1, the used FZC-103: 3936: HDC-1: the first hydrocracking catalyst: the volume ratio of the second hydrocracking catalyst becomes: 8: 15: 10: 42: 25, operating conditions and The reaction results are shown in Table 3.

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Abstract

The invention discloses a method for processing ethylene tar, which selects an appropriate cutting point to fractionate the ethylene tar into a light fraction and a heavy fraction aiming at the characteristics of high content of arene, colloid and carbon residue in the ethylene tar. The light fraction passes through a hydrogenation protection reaction zone, a hydrofining reaction zone and a hydrocracking reaction zone sequentially to obtain a gasoline fraction and a diesel oil fraction; and the heavy fraction is used as a universal type carbon fiber asphalt stock. The method for processing the ethylene tar makes full use of the total fraction of the ethylene tar and increases the additional value of the ethylene tar. In addition, the method enables the arene after hydrostturation in the ethylene tar to open ring, crack moderately and / or isomerize by selecting two types of hydrocracking catalysts to perform grading loading so as to obtain the diesel oil fraction with condensation point less than -40 DEG C in high yield and obtain a side product high-octane gasoline fraction at the same time.

Description

technical field [0001] The invention relates to a processing method of ethylene tar, in particular to a method for processing ethylene tar by using a hydrocracking process. Background technique [0002] The increasing shortage of world oil resources and the increasing price make it necessary for refineries to reduce emissions and increase efficiency. Ethylene tar is currently mainly sold as heavy fuel oil or carbon black raw materials, with low added value. [0003] Ethylene tar is a high-temperature condensation product of raw materials and products in the steam cracking process of ethylene cracking raw materials. Its initial boiling point is 170-260°C, and its final boiling point is >600°C, generally 600-700°C. It belongs to the heavy fraction range. Ethylene tar is mainly a mixture of double-ring and above condensed-ring aromatics, the content of aromatics is more than 90%, and the density (20°C) is greater than 1.0g / cm 3 , Low content of impurities such as sulfur and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/00
Inventor 许杰刘平张忠清王立言
Owner CHINA PETROLEUM & CHEM CORP
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