Method for preparing high-boiling aromatics used as heat carrier oil from heavy aromatics

A technology for high-boiling aromatics and heavy aromatics, applied in the treatment of hydrocarbon oil, hydrocarbon oil treatment products, petroleum industry, etc., can solve the problems of difficult decomposition and coking, high cost of reaction raw materials, etc., to expand utilization channels, improve production technology, and source wide range of effects

Inactive Publication Date: 2018-04-13
CNOOC TIANJIN CHEM RES & DESIGN INST +1
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its product has physical properties such as high boiling point and high flash point under normal pressure. In addition, its chemical properties are stable, it is not sensitive to oxygen, and it does not corrode equipment. Especially, it has good thermal stability at high temperature and is not easy to decompose and coke. It is suitable as a heat carrier Oil is used, but there is a disadvantage of high cost of reaction raw materials

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing high-boiling aromatics used as heat carrier oil from heavy aromatics
  • Method for preparing high-boiling aromatics used as heat carrier oil from heavy aromatics
  • Method for preparing high-boiling aromatics used as heat carrier oil from heavy aromatics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The effect of nitrogen initial pressure on the alkylation reaction of single-ring aromatic components of heavy aromatics separated by rectification and styrene, the results are shown in Table 1. The reaction is carried out in a batch reactor, and the feeding method, reaction temperature and time are the same as the description of the above batch reactor process, and the catalyst is phosphomolybdic acid.

[0031] Table 1. Results of the initial pressure of nitrogen on the single-ring aromatic components of heavy aromatics separated by rectification and the alkylation reaction of styrene

[0032]

[0033] From the above results, it can be seen that with the change of the initial nitrogen pressure, the boiling point composition of the product oil changes significantly. With increasing nitrogen pressure, the content of components with boiling points at 240-310°C and 310-365°C tended to increase, while the content of components with boiling points >365°C gradually decreas...

Embodiment 2

[0035] The effect of reaction temperature on the alkylation reaction of single-ring aromatic components of heavy aromatics separated by rectification and styrene, the results are shown in Table 2. The reaction is carried out in a batch reactor, and the feeding method, reaction pressure and time are the same as the description of the above batch reactor process, and the catalyst is phosphomolybdic acid.

[0036] Table 2. Effect of reaction temperature on the results of the alkylation reaction of single-ring aromatic components of heavy aromatics by rectification and styrene

[0037]

[0038] From the above results, it can be seen that with the change of reaction temperature, the boiling point composition of product oil changes significantly. In the process of increasing the reaction temperature, the content of components with boiling points at 240-310°C and 310-365°C gradually decreased, while the content of components with boiling points >365°C decreased gradually. During ...

Embodiment 3

[0040] The effect of reaction time on the alkylation reaction of single-ring aromatic components of heavy aromatics separated by rectification with styrene, the results are shown in Table 3. Reaction is carried out in batch reactor, and feeding mode and reaction pressure and temperature are described with above-mentioned batch reactor technology, and catalyzer is phosphomolybdic acid.

[0041] Table 3. Reaction time on the results of the alkylation reaction of single-ring aromatic components of heavy aromatics by rectification and styrene

[0042]

[0043] From the above results, it can be seen that with the prolongation of the reaction time, the boiling point composition of the product oil changes significantly. When prolonging the reaction time from 1 to 10 h, the content of components with boiling points at 240-310°C increases slowly, and the content of components with boiling points at 310-365°C increases significantly. Continue to prolong the reaction time to 20h, and...

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
boiling pointaaaaaaaaaa
Login to view more

Abstract

The present invention provides a method for preparing high-boiling aromatics used as heat carrier oil from heavy aromatics. According to the method, monocyclic aromatic hydrocarbons or bicyclic and polycyclic aromatic hydrocarbons obtained from whole fractions of heavy aromatics or by rectification of heavy aromatics are respectively used as raw materials to be stirred with an olefin in a closed reaction kettle or to undergo a flowing reaction with an olefin in a fixed-bed reactor, a liquid inorganic acid or solid acid catalyst or a mixed acid catalyst is employed, at a reaction temperature of60 DEG C or more and under the condition that the nitrogen initial pressure at room temperature is normal pressure or above, one-step catalytic conversion is performed, so that alkylation of the aromatic hydrocarbon with the olefin is achieved to prepare the high-boiling aromatic hydrocarbon used as the heat carrier oil. Compared with existing industrial synthetic routes of mineral heat carrier oil, the method of the invention has the advantages of wide range of sources of raw materials for reaction, low cost, highly efficient use of fossil resources, less waste and reduction of environmentalpollution, and has a wide range of reaction catalyst sources, mild reaction conditions, separation easiness between a liquid product and the catalyst.

Description

technical field [0001] The present invention relates to the preparation technology of high-boiling aromatics, in particular to a high-boiling-point high-boiling-point oil that can be used as heat carrier oil prepared by alkylation of single-ring aromatics components obtained from heavy aromatics components or rectification separation of heavy aromatics and olefins Aromatic method. Background technique [0002] With the continuous exploitation of petroleum resources, the content of aromatics produced by catalytic reforming, isomerization, disproportionation, and ethylene cracking hydrogenation to prepare gasoline is also increasing, and shows a trend of inferior and heavy quality. Hydrogenation of heavy aromatic by-product oil rich in aromatics for refined oil will greatly increase production costs, and the use of adulterated refined oil will not only reduce the cetane number of diesel oil, but will also put more pressure on the environment. Therefore, the industrial value o...

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): C10G50/00
CPCC10G50/00C10G2300/1088C10G2300/1096C10G2300/301C10G2400/30
Inventor 臧甲忠周立坤范景新于海斌南军裴仁彦靳凤英成宏隋芝宇
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap