A method for producing clean fuel oil from waste plastics and high aromatic components

A technology of high aromatic components and waste plastic oil, applied in the petroleum industry, processing hydrocarbon oil, hydrocarbon oil processing products, etc., can solve the problems of long processing flow, high residue yield, poor quality of light diesel products, etc. Reaction time, the effect of ensuring catalytic modification activity

Active Publication Date: 2016-08-17
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
This one-step processing method causes the two raw materials to be heated quickly before they are fully mixed; at the same time, due to the high heating rate, the raw materials that have just been mixed will directly generate coke products before they have time to react. The yield of liquid product is low, only about 80wt%

Method used

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  • A method for producing clean fuel oil from waste plastics and high aromatic components

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Embodiment 1

[0048] See Table 2 for the thermal cracking / catalytic reaction process conditions of ethylene tar and polyethylene mixed raw materials, the yields of gas products, liquid products, and residues, and the properties of the whole fraction. The catalyst used in the catalytic upgrading reaction zone is an HC-1 molecular sieve catalyst, and the amount of the catalyst is 1.5wt% of ethylene tar. The conditions of the whole fraction hydrofining / hydrocracking process are shown in Table 3, wherein the hydrogenation protecting agent, hydrogenation The volume ratio of the refining catalyst and the hydrocracking catalyst is 10:60:30. The properties of the gasoline fraction and diesel fraction obtained at the end of the reaction are shown in Table 4.

Embodiment 2

[0050] Compared with Example 1, the catalyst used in the catalytic upgrading reaction zone is ZSM-5 molecular sieve catalyst, and the dosage is the same as that of Example 1. The process conditions of the whole fraction hydrofining / hydrocracking are shown in Table 3, wherein the volume ratio of the hydrotreating agent, hydrofining catalyst, and hydrocracking catalyst is 15:50:35, and the reaction results are shown in Table 4.

Embodiment 3

[0052] Compared with Example 1, the catalysts used in the catalytic upgrading reaction zone are HC-1 molecular sieve catalyst and ZSM-5 molecular sieve catalyst, the volume ratio of the two catalysts is 1:1, and the catalyst dosage is the same as in Example 1. The process conditions of the whole fraction hydrofining / hydrocracking are shown in Table 3, wherein the volume ratio of the hydrotreating agent, hydrofining catalyst, and hydrocracking catalyst is 10:60:30, and the reaction results are shown in Table 4.

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Abstract

The present invention discloses a method for producing clean fuel oil by using a waste plastic and a high aromatic component. According to the method, a high aromatic component and waste plastic oil are mixed and then enter a thermal cracking reaction zone, the thermal cracking reaction zone adopts the gradual heating and constant temperature operation combined way, the obtained cracking gas re-enters a catalytic reaction zone and contacts a catalyst in the catalytic reaction zone so as to carry out a catalytic reaction, and the obtained reaction effluent is subjected to gas-liquid separation to obtain the gas product and the liquid-phase oil product. With the method of the present invention, the waste plastics and the high aromatic components can be completely utilized, the lightweight fuel oil yield can be increased and can achieve more than or equal to 85%, and the quality of the obtained diesel fuel is good.

Description

technical field [0001] The invention relates to a processing method for high aromatic components and waste plastics, in particular to a method for producing clean fuel oil by using waste plastics and high aromatic components through thermal cracking / catalysis / 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 fuel 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 boilin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/06
CPCC10G69/06C10G2400/04
Inventor 关明华许杰孙凯
Owner CHINA PETROLEUM & CHEM CORP
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