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

Method for treating incineration fly ash by using plasma fluidized bed

A technology of plasma and incineration of fly ash, which is applied in the direction of protective devices against harmful chemicals, etc., can solve the problems of high equipment investment and operating costs, heavy metal and persistent organic pollution, etc., and achieves simple structure, convenient operation and good effect Effect

Inactive Publication Date: 2015-05-20
SUN YAT SEN UNIV
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only heat treatment technology can fundamentally solve the problem of heavy metal and persistent organic matter pollution in incineration fly ash, but heat treatment technology, such as melting, has high equipment investment and operating costs

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 treating incineration fly ash by using plasma fluidized bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] as attached figure 1 As shown, the plasma device of the present invention comprises a plasma fluidized bed 1 and a high-voltage power supply 2; Shaped stainless steel mesh 8, incineration fly ash 9, quartz cover 10 and exhaust port 11; Shaped stainless steel electrodes 6 are symmetrically fixed on the tetrafluoroethylene base 5, and are connected to the high voltage power supply 3 through high-voltage wires, the air inlet 3 is placed at the center of the tetrafluoroethylene base 5; the conical stainless steel mesh 8 is placed on the central axis of the top of the quartz container 4 and fixed directly above the electrode 6, the incineration fly ash 9 to be treated is placed in the conical stainless steel mesh 8.

[0011] The incineration fly ash was taken from the bag filter of a grate furnace domestic waste incineration plant in China. 1) Put 15g of incineration fly ash to be treated into a 300-mesh conical stainless steel mesh; 2) introduce 201 / min air-carrying 3) St...

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 relates to a method for treating incineration fly ash by using a plasma fluidized bed. The method comprises the following steps: putting incineration fly ash to be treated into a plasma device which comprises the plasma fluidized bed and a high-voltage power supply; introducing carrier gas through a gas inlet; starting the high-voltage power supply; and forming disruptive discharge in a minimum-distance part between electrodes by virtue of knife-shaped stainless steel electrodes in the presence of high-voltage power, driving the disruptive discharge to quickly slide downstream along the surfaces of the electrodes by the carrier gas to form non-thermal arc plasma, converting the carrier gas into active gas containing a large quantity of charged particles, excited species, free radicals, electrons and photons, driving the incineration fly ash in a stainless steel mesh to be in a fluidized state by the active gas passing through the conical stainless steel mesh so as to form the plasma fluidized bed, and degrading and mineralizing persistent organic pollutants in the incineration fly ash to form inorganic matter by processes of diffusing, adsorbing, migrating and chemically reacting plasma by virtue of the active gas, thereby achieving the purpose of treating the incineration fly ash.

Description

technical field [0001] The invention relates to the field of solid waste treatment, in particular to a plasma fluidized bed treatment method for incineration fly ash. Background technique [0002] With the application of solid waste incineration technology, the fly ash produced in the incineration process is rich in toxic chemicals, such as heavy metals and persistent organic substances, and is identified as hazardous waste, which needs to be harmlessly treated. At present, the commonly used incineration fly ash treatment methods include physical or chemical separation technology, solidification / stabilization technology and heat treatment technology. Only heat treatment technology can fundamentally solve the problem of heavy metal and persistent organic pollutants in incineration fly ash, but heat treatment technology, such as melting, requires high equipment investment and operating costs. Contents of the invention [0003] In order to solve the above problems, the prese...

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): A62D3/19A62D101/28A62D101/20
CPCA62D3/19A62D2101/08A62D2101/28
Inventor 杜长明
Owner SUN YAT SEN UNIV
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