Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing benzene aromatic hydrocarbon from crude benzole

A technology for benzene series aromatic hydrocarbons and crude benzene, which is applied in chemical instruments and methods, purification/separation of hydrocarbons, hydrocarbons, etc., can solve the problems of difficult long-term operation, unstable crude benzene, easy polymerization, etc., and achieves adaptability Strong, extended operation cycle, high purity effect

Inactive Publication Date: 2007-01-24
HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the three crude benzene hydrogenation processes all require pre-fractionation of crude benzene raw materials. Since crude benzene is extremely unstable, it is easy to polymerize and coke when heated, and it is difficult to operate in a long period.

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 producing benzene aromatic hydrocarbon from crude benzole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Crude benzene raw material 1, whose properties are shown in Table 1, enters the hydrogenation reactor 1 after being mixed with hydrogen, and the reaction conditions are shown in Table 2. The catalyst is a molybdenum-nickel hydrogenation catalyst, and the gas-liquid mixture discharged from the hydrogenation reactor enters the gas-liquid separation Device 2. The liquid phase is sent to the stripper 3, and the liquid product is collected after stripping, which is called hydrogenated oil. The properties and group composition of the hydrogenated oil are shown in Table 2. Hydrogenated oil is pre-distilled to separate heavy components containing xylene and light components containing benzene, toluene and non-aromatics. The former is sent to rectification to obtain petroleum grade mixed xylene, and the latter is extracted with N-formylmorpholine Distillation to separate non-aromatic hydrocarbons and rich solvents containing benzene and toluene. The rich solvents are then rectif...

Embodiment 2

[0027] Crude benzene raw material 2, its properties are shown in Table 1. See Table 2 for hydrogenation reaction conditions, properties and family composition of hydrogenated oil. Other reaction conditions, reaction steps are with embodiment 1. The product properties are shown in Table 3.

Embodiment 3

[0029] Crude benzene raw material 3, its properties are shown in Table 1. See Table 2 for hydrogenation reaction conditions, properties and family composition of hydrogenated oil. Other reaction conditions, reaction steps are with embodiment 1. The product properties are shown in Table 3.

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

No PUM Login to View More

Abstract

The present invention discloses process of producing benzene series arene with crude benzole. Whole fraction crude benzole is produced into high purity benzene, toluene and xylene through the process including hydrorefining, solvent extracting, distilling, rectifying and other steps. The present invention has the features of high purity of arene products over 99.9 %, and low S and N impurity content in arene products less than 1 ppm. The present invention is especially suitable for use in refinery possessing hydrogenation equipment and reforming equipment to deep process crude benzole.

Description

1. Technical field [0001] The present invention relates to the deep processing and utilization of by-products (crude benzene) produced by iron and steel enterprises and coking enterprises, in particular to a kind of crude benzene that uses whole distillate crude benzene as raw material, and obtains petroleum-grade Benzene, toluene, xylene method. 2. Background technology [0002] Benzene, toluene, and xylene are all important organic chemical basic raw materials, and they mainly come from petroleum processing. Crude benzene is a light distillate oil recovered from coal coking crude gas, and its main component is single-ring aromatic hydrocarbons. The content of benzene, toluene and xylene in crude benzene accounts for more than 90%, of which benzene accounts for about 70%, toluene 8%-25%, and xylene 2%-5%. Benzene, toluene, and xylene obtained from crude benzene can be used to make up for the shortage of benzene-based products in the market. [0003] At present, there are...

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
IPC IPC(8): C07C7/163C07C7/04C07C15/02C07C15/04C07C15/06C07C15/08
Inventor 佘喜春朱方明李庆华郭朝辉
Owner HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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