Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Hydro-cracking method for blending ethylene bottom oil

A technology of ethylene tar refining and hydrocracking, which is applied in the field of hydrocracking of vacuum gas oil blended with ethylene tar to produce light fuel oil, can solve the problems of ineffective treatment and inability to process ethylene tar fractions, and achieve expansion Raw material sources, increased saturation rate, and even effects of exothermic reaction

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 40 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0035] The properties of the ethylene tar light fraction and VGO raw materials used are shown in Table 2.

[0036] The hydrogenation protection catalyst used in this example is FZC-103, and the hydrogenation refining catalyst used is 3936. This embodiment adopts a series hydrogenation process, two reactors, the first reactor is filled with a hydrogenation protection catalyst and a hydrofining catalyst, and the second reactor is filled with a hydrogenation carbon removal catalyst and a hydrocracking catalyst. The operating conditions and reaction results used are shown in Table 3.

Embodiment 4

[0048] The heavy fraction of ethylene tar is heat-treated at 380°C under normal pressure for 20 minutes to obtain mesophase pitch; the mesophase pitch is melt-spun with a pneumatic spinning machine, and the spun pitch fiber is oxidized by air at 300°C-400°C to form The fibers were not melted, and then carbonized into carbon fibers at 1000°C under nitrogen. The properties of the obtained pitch-based carbon fibers are shown in Table 5.

[0049] Table 4 Properties of Ethylene Tar Heavy Fraction

[0050] crude oil name

Ethylene tar heavy fraction (>430°C)

carbon to hydrogen ratio

1.07

[0051] crude oil name

Ethylene tar heavy fraction (>430°C)

Softening point / ℃

225

Quinoline insoluble matter / %

0.60

[0052] Table 5 Properties of pitch-based carbon fibers

[0053] project

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a hydro-cracking method for blending ethylene bottom oil, which is different from the method for processing the conventional ethylene bottom oil and comprises the following steps: blending an ethylene bottom oil light end into a conventional hydro-cracking raw material for hydro-cracking, in the presence of hydrogen, sequentially contacting the ethylene bottom oil light end with a hydro-guard catalyst, a hydro-refining catalyst, a hydro-residue carbon removing catalyst and a hydro-cracking catalyst; separating an effluent of hydro-cracking reaction to obtain light fuel oil. The method of the invention adopts a method of grading the hydrogenation catalyst, can process the ethylene bottom oil light end and produce diesel oil having a high cetane number and a low condensation point and a naphtha having high arene, and is not obviously changed in a BMCI value of tail oil and a smoke point of a jet fuel when compared with the conditions before blending the ethylene bottom oil.

Description

technical field [0001] The invention relates to a method for producing clean fuel by hydrogenation treatment of ethylene tar, in particular to a method for production of light fuel oil by hydrocracking of vacuum gas oil (VGO) blended with ethylene tar. 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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10G47/02C10G47/04
Inventor 刘平许杰张忠清王立言
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com