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

Catalystic reforming method for hydrocarbons

A technology for catalytic reforming and hydrocarbons, which is used in the catalytic reforming of naphtha, etc., and can solve the problems of lower octane number of reformed products, low yield of aromatics, and decreased catalyst acidity.

Active Publication Date: 2008-04-02
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the use of the catalytic reforming catalyst, the halogen in the catalyst is easy to lose, resulting in a decrease in the acidity of the catalyst. At the same time, the coke formed in the pores and on the surface of the carrier and the agglomeration of the metal active components due to the decrease in the surface area of ​​the carrier, all make The activity of the catalyst gradually decreases during use, resulting in a decrease in the octane number of the reformed product and a low yield of aromatics

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
  • Catalystic reforming method for hydrocarbons
  • Catalystic reforming method for hydrocarbons
  • Catalystic reforming method for hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] A stainless steel reactor is loaded with a bimetallic reforming catalyst, and the catalyst carrier is alumina, which contains 0.26% by mass of platinum, 0.28% by mass of rhenium, and 1.0% by mass of chlorine (both based on alumina). The reaction apparatus was purged first with nitrogen and then with hydrogen. Then, using n-heptane as a raw material, n-heptane and hydrogen are fed into the reactor, and the water content of the n-heptane is 1.0 ppm. At 500°C, 0.35MPa, n-heptane feed liquid hourly space velocity 3.0 -1 , Hydrogen / hydrocarbon volume ratio of 1000:1 under the conditions of the reaction. After the start of the reaction, phosphorus trichloride was added to the n-heptane feed every 24 hours, with each addition taking 12 hours. The addition amount of phosphorus trichloride is shown in Table 1, and reaction result is shown in Fig. 1, Fig. 2.

example 2

[0031] Carry out reforming reaction with n-heptane as raw material by the method for example 1, difference is that phosphorus trichloride is added continuously when n-heptane feeds, and reaction result is shown in Fig. 3, Fig. 4.

example 3

[0038] Get the catalyst after the reaction of Example 2, Comparative Example 2 and Comparative Example 3, measure its carbon deposition amount, and take the catalyst carbon deposition amount without adding any substance in the raw material as a benchmark, calculate the reaction after adding different substances in the above three raw materials The amount of coke deposited on the catalyst is reduced, as shown in Figure 5. As can be seen from Figure 5, the reduction rate of the amount of carbon deposition of the catalyst D obtained by the method of the present invention is close to 30%, that is to say, the amount of carbon deposition of the catalyst has decreased by about 30%, indicating that the method of the present invention has a higher resistance to carbon deposition performance.

[0039] Table 1

[0040] instance number

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 catalytic reforming method for hydrocarbons includes reformation of hydrocarbon material in the presence of reforming catalyst, and adding phosphorus halide in 0.1-50 ppm of hydrocarbon material into the hydrocarbon material during reformation. The method can reduce carbon deposition on reforming catalyst effectively and prolong the service life of catalyst.

Description

technical field [0001] The invention relates to a method for catalytic reforming of hydrocarbon raw materials, specifically, a catalytic reforming method using naphtha as raw material in the presence of a catalyst containing Group VIII metals. Background technique [0002] Catalytic reforming is an important process for the production of high-octane gasoline and aromatics, while producing cheap hydrogen as a by-product. In a typical reforming industrial unit, the reforming feedstock is passed through a reforming reactor together with hydrogen or hydrogen recycle gas, and then the reaction products are separated into liquid and gas. Part of the gas is used as recycle gas, another part of the gas is supplied to the hydrogenation unit, and the liquid is discharged from the unit as high-octane gasoline or aromatics-rich products. [0003] The reforming catalysts currently used in industry are all dual-functional catalysts, mainly including metal active components with hydrogena...

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 Patents(China)
IPC IPC(8): C10G35/09
Inventor 王丽新陈志祥臧高山张大庆
Owner CHINA PETROLEUM & CHEM CORP
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