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

Method for eliminating chloro aromatic hydrocarbon through low-temperature catalytic combustion

A technology of chlorinated aromatic hydrocarbons and low-temperature catalysis, which is applied in the direction of combustion methods, chemical instruments and methods, and combustion types. It can solve the problems of many by-products, low activity, and secondary pollution, and achieve strong chlorine poisoning resistance and catalytic High activity and long life effect

Inactive Publication Date: 2014-08-06
EAST CHINA UNIV OF SCI & TECH
View PDF13 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, V 2 o 5 -TiO 2 -TiO in -based catalyst 2 It is toxic and easy to cause secondary pollution, which limits its application
Although other types of catalysts such as solid acid catalysts have some applications, they have not been widely promoted due to low activity or many by-products

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

[0019] Prepare commercially available sodium hydroxide solid into a solution with a mass fraction of 30%, measure 80ml and mix it with 3g of commercially available cerium nitrate, stir vigorously with a magnetic stirrer for half an hour, then put it into a polytetrafluoroethylene container Lined crystallization kettle, and then statically crystallized at 100°C for 48 hours, cooled to room temperature, filtered and washed with deionized water until neutral, and then rinsed with absolute ethanol for 3 times. Finally, place it in a 60°C oven to dry for 12 hours, and finally place it in a tube furnace for roasting at 350°C. The specific roasting process is: start heating at 50°C, and program the temperature at a rate of 3°C / min (continuing 3 hours in total). Hours). Finally, the cerium oxide nanorod carrier is obtained, denoted as CeO 2 -r.

Embodiment 2

[0021] Prepare commercially available sodium hydroxide solid into a solution with a mass fraction of 10%, measure 80ml and mix it with 3g of commercially available cerium nitrate, stir vigorously with a magnetic stirrer for half an hour, then put it into a polytetrafluoroethylene container Lined crystallization kettle, and then statically crystallized at 180°C for 24 hours, cooled to room temperature, filtered and washed with deionized water until neutral, and then rinsed with absolute ethanol for 3 times. Finally, place it in a 60°C oven for 12 hours, and finally put it in a tube furnace for roasting at 350°C. The specific roasting process is: start heating at 50°C, and program the temperature at a rate of 3°C / min (continuing 3 hours in total). Hours). Finally, the cerium oxide nanocube support is obtained, denoted as CeO 2 -c.

Embodiment 3

[0023] Add commercially available 0.87g of cerium nitrate and 0.0076g of sodium phosphate into 80ml of deionized water, stir vigorously with a magnetic stirrer for half an hour, put it into a crystallization kettle with a polytetrafluoroethylene liner, and then ℃ for static crystallization for 12 hours, cooled to room temperature, filtered and washed with deionized water until neutral, and then rinsed with absolute ethanol for 3 times. Finally, place it in a 60°C oven for 12 hours, and finally put it in a tube furnace for roasting at 350°C. The specific roasting process is: start heating at 50°C, and program the temperature at a rate of 3°C / min (continuing 3 hours in total). Hours). Finally, the cerium oxide nano-octahedral support is obtained, denoted as CeO 2 -o.

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 invention discloses a method for eliminating chloro aromatic hydrocarbon through low-temperature catalytic combustion. The method comprises the following steps that precious metal-ruthenium is loaded on cerium oxide nanorods, nanocubes and nano regular octahedrons which are used as a carrier to be taken as a catalyst, air used as an oxidizing agent is introduced into a reactor, so that chloro aromatic hydrocarbons are completely combusted in the presence of the catalyst and are converted into carbon dioxide, hydrogen chloride and little chlorine gas, and the completely-combusted tail gas is emptied after being absorbed by dilute alkali solution to remove acid gas such as hydrogen chloride and chlorine gas. The used catalyst has high activity without byproduct generation and secondary pollution, strong chlorine poisoning resistance and long service life, is particularly suitable for eliminating halogen-containing organic compounds through complete low-temperature catalytic combustion, particularly eliminating easily-volatile chloro aromatic hydrocarbon contaminants.

Description

technical field [0001] The invention belongs to the technical field of catalytic combustion and environmental protection, and in particular relates to a method for low-temperature catalytic combustion and elimination of chlorinated aromatic hydrocarbons and the catalyst used. Background technique [0002] Chlorine-containing volatile organic compounds (CVOCs) can not only cause serious harm to human health, but also cause lasting and cumulative effects on biological systems, and can destroy the atmospheric ozone layer. Therefore, many countries have now formulated strict environmental regulations for the emission of CVOCs. Chlorine-containing volatile hydrocarbons are divided into non-aromatic aliphatic hydrocarbon chlorides, such as dichloroethane, trichloroethylene, methyl chloride and polychloromethane, and aromatic hydrocarbon chlorides, such as chlorobenzene and dichlorobenzene. The former is produced in the process of preparing vinyl chloride by oxychlorine method in ...

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): B01J23/63F23G7/07
Inventor 黄浩张瑧谷宇峯卢媛娇王幸宜戴启广
Owner EAST CHINA UNIV OF SCI & TECH
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