Method for producing gasoline and diesel oil by mixing and refining plastic oil, coal tar, ethylene tar or tire oil

A kind of ethylene tar and mixed refining technology, which is applied in the petroleum industry, processing hydrocarbon oil, refining to remove heteroatoms, etc., can solve the problems of unable to adjust gasoline octane number on demand, unfavorable continuous operation, high coking content, etc., to achieve extended Hydrofining catalyst life, reduction of coking amount, effect of reducing coking amount

Inactive Publication Date: 2012-12-26
DALIAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0006] Chinese patent, Publication No.: CN114675A, introduces a method of using waste plastics or waste plastics and then mixing other oils to produce liquefied gas, gasoline, diesel oil and lubricating oil base oil. The cracking process requires two crackings , the process is complicated, the energy consumption is high, and the coking content is high, which is not conducive to the continuous production
[0007] Chinese patent, publication number: CN101255343A, introduces a method of using waste plastics, waste oil or heavy oil and refining fuel diesel. The process needs to be refined in a supercritical state, with harsh conditions, a lot of waste water, and a large amount of coking.
[0008] Chinese patent, publication number: CN102226103A, introduces a method for producing gasoline and diesel oil using plastic oil, wherein the raw material oil is a single plastic oil product, which is prone to coking under the process conditions and cannot adjust the octane number of gasoline on demand

Method used

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  • Method for producing gasoline and diesel oil by mixing and refining plastic oil, coal tar, ethylene tar or tire oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Plastic oil and coal tar are mixed and injected into the pre-fractionation tower at a volume ratio of 1:0.1, and the pre-fractionation tower is at 300 o C is fractionated into light components and heavy components, and the light components are directly passed through Al 2 o 3 Supported NiMo sulfide catalyst hydrorefining reaction, control the feed temperature at 320 o C. Hydrogen partial pressure 6 MPa, volumetric space velocity 0.5 h －1 , The volume ratio of hydrogen to oil is 600:1; the hydrogen is recycled after being separated and purified. The heavy component is rectified by the catalytic distillation tower filled with alumina and Y-type zeolite composite catalyst. The distillate oil after reactive rectification can directly enter the hydrogenation reactor for hydrofining, and part of it will be injected into the pre-fractionator for re-reaction and hydrofining. The final distillate is cut into gasoline (180°C) according to the distillation temperatur...

Embodiment 2

[0018] Embodiment 2: Plastic oil and ethylene tar are mixed and injected into the pre-fractionation tower at a volume ratio of 1:0.5, and the pre-fractionation tower is at 300 o C is fractionated into light components and heavy components, and the light components are directly passed through SiO 2 -Al 2 o 3 Supported NiMoW sulfide catalyst hydrorefining reaction, the feed temperature is controlled at 260 o C. Hydrogen partial pressure 4 MPa, volumetric space velocity 1 h －1 , The volume ratio of hydrogen to oil is 400:1; hydrogen is recycled after separation and purification. The heavy component is rectified by the catalytic distillation tower filled with alumina and β molecular sieve composite catalyst. The distillate oil after reactive rectification can directly enter the hydrogenation reactor for hydrofining, and part of it will be injected into the pre-fractionator for re-reaction. After hydrofining The distillate is cut into gasoline (180°C) according to the distillat...

Embodiment 3

[0019] Embodiment 3: Plastic oil and tire oil are mixed and injected into the pre-fractionation tower at a volume ratio of 1:1, and the pre-fractionation tower is at 300 o C is fractionated into light components and heavy components, and the light components are directly passed through Al 2 o 3 Supported CoMo sulfide catalyst hydrorefining reaction, the feed temperature is controlled at 300 o C. Hydrogen partial pressure 4 MPa, volumetric space velocity 1 h －1 , The volume ratio of hydrogen to oil is 800:1; hydrogen is recycled after separation and purification. The heavy components are rectified through the catalytic distillation column filled with alumina catalyst containing 30% ZSM-5 and 10% β zeolite. The distillate oil after reactive rectification can directly enter the hydrogenation reactor for hydrofining, and part of it will be injected into the pre- The fractionation tower reacts again, and the distillate oil after hydrofining is cut into gasoline (180°C) according...

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Abstract

The invention discloses a method for producing gasoline and diesel oil by mixing and refining plastic oil, coal tar, ethylene tar or tire oil, and belongs to the field fields of environmental protection and energy. The method is characterized in that the waste plastic oil and the coal tar, the ethylene tar or the tire oil are mixed in a ratio of 1:(0.1-1.1) to form a raw material, and the raw material is catalytically distilled and hydrofined into the high-quality gasoline and diesel oil; and the method comprises the following steps of: fractionating the raw oil into light components and heavy components at the temperature of 300 DEG C through a pre-fractionation tower, directly performing hydrofining reaction on the light components, performing catalytic distillation cracking on the heavy components, regulating the fraction proportion of the gasoline and the diesel oil to reduce the colloid content of the fraction, performing hydrofining reaction, reducing the sulfur and nitrogen content of the oil, regulating the octane value and the acid value, distilling the obtained distillate oil, and thus obtaining high-quality gasoline, diesel oil and the like. By the method, the conversion rate of balanced reaction and the selectivity of consecutive reaction are improved, the coking quantity is greatly reduced, the consumption is reduced, energy is saved, the service life of a catalyst is prolonged, the flow is simple and the investment is saved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and energy, and relates to a method for producing gasoline and diesel by mixing waste plastic oil with coal tar, ethylene tar or tire oil. Background technique [0002] Gasoline and diesel, as important power fuels, occupy a relatively high share in the existing energy structure. With the rapid development of today's society, the scale of energy demand is constantly expanding, especially the demand for gasoline and diesel is increasing day by day. Gasoline and diesel oil commonly used at present come from petroleum, but petroleum resources are limited, leading to increasingly serious energy shortage problems. Energy conservation and seeking new alternative energy sources have become a major issue facing the world today. [0003] Under the economic development model of global circular economy development, waste recycling will become the leading industry of circular economy. At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00C10G45/08C10G7/00
Inventor 梁长海陈霄李闯汪镭
Owner DALIAN UNIV OF TECH
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