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Method for producing high-quality gasoline/diesel from chlorine-containing plastic oil

A plastic oil, high-quality technology, applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., to achieve the effect of resource utilization, improve selectivity, and prolong life

Active Publication Date: 2015-06-24
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a method for producing clean fuel from chlorine-containing plastic oil. Aiming at the problems of corrosion devices and secondary pollution in the conversion process of chlorine-containing plastic oil, high-quality gasoline and diesel are used as target products to realize resource utilization of chlorine-containing plastic oil. And comprehensively utilize the waste residue and gas in the process itself, so that the production process is energy-saving and environmentally friendly, and avoids secondary pollution

Method used

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  • Method for producing high-quality gasoline/diesel from chlorine-containing plastic oil
  • Method for producing high-quality gasoline/diesel from chlorine-containing plastic oil
  • Method for producing high-quality gasoline/diesel from chlorine-containing plastic oil

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Experimental program
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Effect test

Embodiment 1

[0019] The chlorine-containing plastic oil is injected into the high-temperature dechlorination tower for high-temperature dechlorination. The catalyst is modified active aluminum oxide and a small amount of Y-type zeolite, the content of the Y-type zeolite is 0.05%-0.1%, and the molded catalyst is obtained by extruding and forming, and the bulk density is 0.82g / mL. The following table 1 sees the reaction process conditions and product properties.

[0020]

[0021] It can be seen from the table that when the reaction exceeds 280°C and the pressure exceeds 1MPa, NaOH+H 2 The dechlorination effect is not obvious when the O / Cl ratio is greater than 10, so the reaction conditions are: 280°C, 1MPa, NaOH+H 2 The life experiment was done under the condition of O / Cl 10. The following table 2 sees the reaction process condition of 300 hours operation and the product property that finally obtains.

[0022]

[0023] It can be seen from Table 2 that the experimental results for 3...

Embodiment 2

[0025] Gas-phase catalytic cracking of plastic oil after dechlorination over a molecular sieve / alumina catalyst. The dechlorinated plastic oil is injected into the reactive distillation tower equipped with molecular sieve / alumina catalyst for reaction and distillation. The catalyst is composed of alumina containing 15% ZSM-5 and 35% zeolite beta, formed by bonding A columnar product of 2.0-3.0mm is obtained, the length is 3-8mm, the bulk density is 0.75g / mL, and the strength is greater than 40N / mm. The waste residue and gas generated during the waste plastic oil conversion process are used for heating, and the ratio of agent to oil is controlled at 15-20. See Table 3 below for the results of the catalytic distillation material balance test.

[0026]

[0027] See Table 4 below for properties of catalytic distillation chlorine-containing plastic oil

[0028]

[0029] It can be seen from Table 4 that after catalytic distillation of chlorine-containing plastic oil, the sul...

Embodiment 3

[0031] Taking the supported NiMo sulfide catalyst as an example, the effects of temperature and pressure on the effect of hydrodechlorination were investigated. The carrier adopts SiO 2 -Al 2 o 3 , the specific surface area is 200-400m 2 / g, the pore volume is 0.5-2.0cm 3 / g, the most probable pore size distribution is 2-4nm and 10-15nm. The supported sulfide catalyst is prepared through the steps of impregnation-drying-calcination and the like by adopting an equal-volume impregnation method. The loading amount of metal Ni was 5%, and the loading amount of metal Mo was 20%. The following table 5 sees NiMo sulfide catalyst reaction process conditions and product properties.

[0032]

[0033] It can be seen from Table 5 that the reaction temperature has little effect on the dechlorination effect, but has a significant effect on the desulfurization and denitrification effect; while the reaction pressure has little effect on the hydrodesulfurization, denitrification and de...

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Abstract

The invention discloses a method for producing high-quality gasoline / diesel from chlorine-containing plastic oil, belonging to the technical fields of environmental protection and energy. The method is characterized by comprising the following steps: injecting chlorine-containing plastic oil into a high-temperature dechlorination tower filled with active alumina to perform high-temperature dechlorination, spraying a small amount of NaOH water solution on the top of the high-temperature dechlorination tower, and sending the dechlorinated plastic oil into a catalytic distillation tower filled with a molecular sieve / alumina catalyst to perform reaction and rectification; and pressurizing the plastic oil subjected to catalytic distillation into a hydrofining tower, distilling the hydrofined distillate oil under normal pressure, cutting into gasoline and diesel according to the recovered temperature, and mixing the tower bottom heavy oil and the raw material chlorine-containing plastic oil to react. The dechlorination catalyst and sulfide catalyst used by the method can be prepared by proper methods according to the composition and performance of the plastic oil. The method has the advantages of simple technique, high catalyst activity and high selectivity, and has favorable economic benefits and industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and energy, and relates to a method for producing high-quality gasoline and diesel from chlorine-containing plastic oil. Background technique [0002] According to statistics, my country produces about 2.4 million to 4.8 million tons of waste plastics every year. The increasing amount of plastic waste that cannot be eliminated naturally not only seriously affects and pollutes the environment, but even endangers the survival of human beings. Waste plastic oilization technology is a technology that converts waste plastics into fuels and chemical raw materials under the action of high temperature or catalysts. Its principle of action is that the polymer chains in waste plastic products break under the action of heat energy and become compounds with low molecular weight. . However, when waste plastics are made into waste plastic oil by pyrolysis or catalytic pyrolysis, if there are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/14
Inventor 梁长海李闯张淼靳少华邸鑫殷东东
Owner DALIAN UNIV OF TECH
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