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Method for producing clean fuel by adopting chlorine-containing plastic oil

A clean fuel and plastic oil technology, applied in the petroleum industry, processing hydrocarbon oil, preparation of liquid hydrocarbon mixtures, etc., to achieve the effects of inhibiting corrosion, improving selectivity, and prolonging life

Inactive Publication Date: 2014-08-13
DALIAN UNIV OF TECH +1
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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 clean fuel by adopting chlorine-containing plastic oil
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  • Method for producing clean fuel by adopting chlorine-containing plastic oil

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Experimental program
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Effect test

Embodiment 1

[0020] Gas-phase catalytic cracking of chlorinated plastic oils over molecular sieve / alumina catalysts. The chlorine-containing plastic oil is injected into a reactive distillation tower equipped with a molecular sieve / alumina catalyst for reaction and rectification. The catalyst is composed of alumina containing 35% ZSM-5 and 15% beta zeolite, obtained by bond molding 2.0-3.0mm columnar product, length 3-8mm, bulk density 0.75g / mL, strength 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 1 below for the results of the catalytic distillation mass balance test.

[0021]

[0022] The following table 2 sees the properties of catalytic distillation chlorine-containing plastic oil

[0023]

[0024] It can be seen from Table 2 that after catalytic distillation of chlorine-containing plastic oil, the chlorine content basically does not...

Embodiment 2

[0026] The hydrodechlorination catalyst adopts supported Pd, Pt, Ru, Ir, Rh, Co or Ni metal catalysts. 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 metal precursors are respectively palladium nitrate or palladium acetate, chloroplatinic acid, ruthenium trichloride, iridium trichloride, rhodium trichloride, cobalt nitrate and nickel nitrate or nickel acetylacetonate. The supported metal catalyst is prepared by an equal-volume impregnation method through the steps of impregnation-drying-calcination. For noble metals Pd, Pt, Ru, Ir and Rh, the metal loading is 3-10%; for metal Co and Ni, the metal loading is 30-60%. The following table 3 sees reaction process conditions and product properties.

[0027]

[0028]It can be seen from Table 3 that the dechlorination effect of all metal catalysts is obvious after low-pressure hydrodechlorin...

Embodiment 3

[0030] The effect of temperature and pressure on the effect of hydrodechlorination was investigated by taking high-nickel catalyst as an example. The metallic Ni metal loading was 55%. The following table 4 sees reaction process conditions and product properties.

[0031]

[0032] It can be seen from Table 4 that the reaction temperature has a greater influence on the dechlorination effect, while the reaction temperature has less influence on the hydrodechlorination effect.

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Abstract

The invention discloses a method for producing a clean fuel by adopting chlorine-containing plastic oil, and belongs to the fields of environmental protection and energy technologies. The method is characterized by comprising the steps of injecting the chlorine-containing plastic oil into a catalytic distillation tower filled with a molecular sieve / alumina catalyst for reaction and rectification; performing heat exchange on the chlorine-containing plastic oil after catalytic cracking, feeding the chlorine-containing plastic oil after heat exchange into a low-pressure liquid phase hydrogenation tower, and performing hydrogenation and dechlorination, wherein the used catalyst is a supported metal catalyst; feeding the distillate oil after the liquid phase hydrogenation into a washing tower, circulating the aqueous phase of the lower layer at the tower bottom, compressing the washed distillate oil of the upper layer, feeding the distillate oil into a hydrofining tower, hydrofining with a sulfide catalyst, removing monoene compounds through monoene hydrogenation saturation reaction, removing sulfur, nitrogen and colloids to obtain mixed gasoline and diesel oil without peculiar smell and with high quality, distilling to obtain distillate oil of gasoline and diesel oil, and mixing the heavy oil at the tower bottom and the chlorine-containing plastic oil serving as a raw material for reacting again. The method has the advantages that the process is simple and the activity and selectivity of the catalysts are high, and has good economic benefits and industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and energy, and relates to a method for producing clean fuel 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. Including various waste plastics: such as polyvinyl chloride (PVC) plastics, polyethylene (PE) plastics, polypropylene (PP) plastics, polystyrene (PS) plastics, ABS plastics, etc. 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 ...

Claims

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Application Information

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IPC IPC(8): C10G67/14
CPCC10G1/10
Inventor 梁长海李闯陈霄张淼汪镭
Owner DALIAN UNIV OF TECH
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