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

Method and device for purifying high-temperature smoke containing persistent organic pollutants

A technology for organic pollutants and high-temperature flue gas, which is applied in the field of flue gas purification and treatment, can solve the problems of secondary pollution, high construction cost, and high operating cost, and achieves the effect of reducing operating cost, removing completely, and reducing water consumption.

Active Publication Date: 2012-06-20
ZHEJIANG UNIV
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main defects in the traditional gas purification method: one is the complex structure of the purification equipment, high construction cost, high energy consumption and high operating cost, which is not economical and not conducive to the current high energy price Energy saving and emission reduction; Second, some processes have problems of low purification efficiency and easy to produce secondary pollution, which limits the scope of use and large-scale promotion of these processes

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 high-temperature smoke containing persistent organic pollutants
  • Method and device for purifying high-temperature smoke containing persistent organic pollutants
  • Method and device for purifying high-temperature smoke containing persistent organic pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] Embodiment: purifying polychlorinated biphenyls (PCBs) in high-temperature flue gas

[0027] PCBs-containing high-temperature smoke is produced by heating polychlorinated biphenyls (PCBs)-contaminated soil. Flue gas flow rate is 6m 3 / h, the flue gas temperature is 500°C, and the initial PCBs content in the flue gas is 44.5mg / m 3 .

[0028] The gas purification process is as follows: open valve 8, valve 9, valve 14, and valve 15, open induced draft fan 17, open high-voltage power supply 21, and open circulating water pump 13. The high-temperature flue gas containing PCB enters the primary spray tower 3 through the inlet 1, and the flue gas flow rate is 6m 3 / h, directly mixed with the spray water at the packing layer 2, the inner diameter of the primary spray tower 3 is 108mm, the liquid flow rate of the primary spray tower is 40L / h, the persistent organic pollutants in the exhaust gas are condensed, and the gas After passing through the first-stage spray tower 3, it...

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 smoke purifying technology and aims at providing a method and a device for purifying high-temperature smoke containing persistent organic pollutants. The method comprises the following steps: reducing the temperature and cooling the high-temperature smoke containing the persistent organic pollutants by a primary spray tower and a secondary spray tower which are connected in series, enabling the condensed persistent organic pollutants to enter a sedimentation tank along with spraying solution; enabling wet gas after being sprayed to enter a dehumidifier, enabling the dehumidified gas to enter multiple stages of plasma reactors which are connected in series, and degrading the residual persistent organic pollutants in the gas. According to the method, the high-temperature smoke containing the persistent organic pollutants can be processed effectively; the method is suitable for treating tail gas which is large in air volume, high in dust content and contains the persistent organic pollutants, and particularly suitable for processing tail gas generated in the process of thermal desorption of solid wastes polluted by the persistent organic pollutants, and more than 95% of persistent organic pollutant removing rate can be realized. The related device has low energy loss and water consumption, does not generate secondary pollutants easily, and is simple in structure and convenient to install and maintain.

Description

technical field [0001] The invention relates to flue gas purification treatment technology, in particular to a method and device for purifying and treating high-temperature flue gas containing persistent organic pollutants, belonging to the field of environmental protection. Background technique [0002] Persistent Organic Pollutants (POPs) refer to chemical substances synthesized by humans that can persist in the environment, accumulate through the biological food chain (net), and cause harmful effects on human health. The main POPs are dioxins. , polychlorinated biphenyls, organochlorine pesticides, hexachlorobenzene, etc. POPs are highly toxic, persistent, and easy to accumulate in organisms and carry out long-distance migration and deposition. With the public's gradual awareness of its environmental and health hazards, there is a more urgent need for economical and effective methods to deal with these toxic substances. [0003] A large amount of soil in my country has ...

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): B01D5/00B01D53/74B01D53/44
Inventor 严建华李晓东陆胜勇陈彤池涌祁志福倪明江岑可法
Owner ZHEJIANG 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