Method and device for purifying poisonous gas through cooperation of magnetic-enhanced electrofiltration dedusting and low-temperature plasmas

A technology of low-temperature plasma and toxic gas, which is applied in the field of dust removal and gas purification, and can solve problems such as the difficulty of effectively removing fine particles

Inactive Publication Date: 2018-10-16
KUNMING UNIV OF SCI & TECH
View PDF13 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems that fine particles in industrial waste gas are difficult to be effectively removed and toxic and harmful gases are directly discharged, the present invention provides a method for magnetically enhanced electric filter dust removal and low-temperature plasma to purify toxic gas. The method uses electric field, magnetic field and low-temperature plasma The method of synergistic effect of purification technology on toxic gases can not only achieve efficient removal of fine particles in industrial waste gases, but also purify toxic gases in industrial waste gases

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 and device for purifying poisonous gas through cooperation of magnetic-enhanced electrofiltration dedusting and low-temperature plasmas
  • Method and device for purifying poisonous gas through cooperation of magnetic-enhanced electrofiltration dedusting and low-temperature plasmas
  • Method and device for purifying poisonous gas through cooperation of magnetic-enhanced electrofiltration dedusting and low-temperature plasmas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The concentration of particulate matter in an industrial waste gas is 40 mg / m 3 , SO 2 The concentration is 1200mg / m 3 , NO X The concentration is 500 mg / m 3 , VOCs concentration is 450mg / m 3 .

[0034] The industrial exhaust gas with a humidity of 50% is passed through the corona electrode and the catalyst (TiO 2 – SiO 2 ) in the corona area produced by the coated electric filter cloth (the oxygen concentration in the exhaust gas is 5%), the corona electrode and the electric filter cloth with catalyst coating are connected to an external power supply, and the power supply voltage is 85kV. The corona area is charged, and low-temperature plasma is generated in the corona area at the same time. The charged particles and low-temperature plasma move to the electric filter cloth under the action of the magnetic field force (the magnetic field strength is 60T) and the electric field force, and the particle size is larger than that of the electric filter cloth. Particle...

Embodiment 2

[0040] The concentration of particulate matter in an industrial waste gas is 34 mg / m 3 , SO 2 The concentration is 1600mg / m 3 , NO X The concentration is 650 mg / m 3 .

[0041] The industrial exhaust gas with a humidity of 80% is passed through the corona electrode and the catalyst (Ag 2 O-Al 2 o 3 ) coated electric filter cloth (the oxygen concentration in the exhaust gas is 10%), the corona electrode and the electric filter cloth with catalyst coating are connected to an external power supply, and the power supply voltage is 35kV. The corona area is charged, and low-temperature plasma is generated in the corona area at the same time. The charged particles and low-temperature plasma move to the electric filter cloth under the action of the magnetic field force (the magnetic field strength is 15T) and the electric field force, and the particle size is larger than that of the electric filter cloth. Particles with a pore size (3 μm) on the filter cloth settle due to the bl...

Embodiment 3

[0047] The concentration of particulate matter in an industrial waste gas is 78 mg / m 3 , SO 2 The concentration is 2000mg / m 3 , NO X The concentration is 860 mg / m 3 , VOCs concentration is 420 mg / m 3 .

[0048] The industrial exhaust gas with a humidity of 40% is passed into the corona area (the oxygen concentration in the exhaust gas is 7%) produced by the corona electrode and the electric filter cloth coated with catalyst (Pd metal) at a flow rate of 10m / s. The electrode and the electric filter cloth with catalyst coating are connected to an external power supply. The power supply voltage is 52kV. At 10°C, the particles in the gas are charged in the corona area, and at the same time low-temperature plasma is generated in the corona area, and the charged particles and low-temperature The plasma moves to the electric filter cloth under the action of magnetic field force (magnetic field strength 40T) and electric field force, and the particles with a particle size larger t...

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
Magnetic field strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method and a device for purifying poisonous gas through cooperation of magnetic-enhanced electrofiltration dedusting and low-temperature plasmas. The method comprises the following steps: industrial waste gas is introduced into a corona area generated by a corona electrode and electrofiltration cloth with a catalyst coating layer; particles in the gas are charged in the corona area; meanwhile, the low-temperature plasmas are generated in the corona area; the charged particles and the low-temperature plasmas move to the electrofiltration cloth under the effects of magnetic field force and electric field force; the particles with different sizes are settled and removed; meanwhile, the low-temperature plasmas oxidize poisonous and harmful components in the gas underthe effect of catalyst on the electrofiltration cloth to realize purification of the poisonous gas; and through effective utilization of the coupling effect of an electric field and a magnetic field and a low-temperature plasma gas purifying technology, the removing efficiency of particles in industrial waste gas is improved, the excellent effect on difficult-removed fine submicron particles withparticle sizes of 0.1-2.5 mm is achieved, and the purification of the poisonous gas is realized.

Description

technical field [0001] The invention relates to the field of dust removal and gas purification, in particular to a method and device for magnetically enhanced electric filter dust removal and low-temperature plasma purification of toxic gas. Background technique [0002] With the development of my country's economy and science and technology, a large amount of waste gas is discharged into the air, which makes the quality of the atmospheric environment significantly worse. Physical health poses a huge threat. For example, in industrial exhaust gas, particulate matter and toxic and harmful gases are the most important pollutants. A large amount of particulate matter falls on plant leaves and affects plant growth, and falls on buildings and clothes to stain and corrode. Particles with a particle size below 3.5 μm can be inhaled and deposited in the bronchi and alveoli of humans, causing or aggravating respiratory diseases. Secondly, the main toxic gases contained in industria...

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): B03C3/017B01D53/86B01D53/60B01D53/44B01D53/32
CPCB01D53/32B01D53/8637B01D53/8687B03C3/0175B01D2259/818
Inventor 瞿广飞张航李军燕李志顺成
Owner KUNMING UNIV OF SCI & TECH
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