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

Method for efficiently suppressing dioxin formation in waste incineration process by using phosphorus-based inhibitor

The technology of waste incineration and waste incinerator is applied in the field of using phosphorus-based inhibitors to efficiently suppress the generation of dioxins in the waste incineration process, and can solve the problems of sulfur corrosion on the surface of the heat exchanger in the furnace, affecting the operation of the incinerator, and increasing the concentration. To achieve the effect of low price, efficient inhibition of dioxin generation, and convenient operation

Active Publication Date: 2022-07-12
ZHEJIANG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of sulfur-containing retarders needs to be very cautious, improper use will cause SO in the flue gas 2 A significant increase in the concentration will also cause sulfur corrosion on the surface of the heat exchanger in the furnace, resulting in tube explosion, seriously affecting the operation of the incinerator, and causing certain negative effects

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

[0026] The phosphorus-based inhibitor is ammonium dihydrogen phosphate, with a particle size of 1000 mesh, and is sprayed into the flue area where the flue gas temperature is about 700 °C. The molar ratio of phosphorus element to chlorine element in flue gas is 1.5, or phosphorus element and garbage The molar ratio of transition metal elements was 30, and the suppression efficiency of flue gas dioxin was 92.8%.

Embodiment 2

[0028] The phosphorus-based inhibitor is ammonium dihydrogen phosphate, with a particle size of 500 mesh, and is sprayed into the flue area where the flue gas temperature is about 700 °C. The molar ratio of phosphorus element to chlorine element in the flue gas is 1.5, or phosphorus element and garbage The molar ratio of transition metal elements was 30, and the suppression efficiency of flue gas dioxin was 91.1%.

Embodiment 3

[0030] Phosphorus-based inhibitor is ammonium dihydrogen phosphate, with a particle size of 200 mesh, and is sprayed into the flue area where the flue gas temperature is about 700 °C. The molar ratio of phosphorus element to chlorine element in the flue gas is 1.5, or phosphorus element and garbage The molar ratio of transition metal elements was 30, and the suppression efficiency of flue gas dioxin was 90.3%.

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
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention relates to a solid waste incineration technology, and aims to provide a method for efficiently suppressing the generation of dioxins in a waste incineration process by utilizing a phosphorus-based inhibitor. In the method, when solid waste is disposed of by incineration in a waste incinerator, powdered phosphorus-based inhibitor is sprayed into the flue area with a temperature range of 500-850°C in the waste incinerator to suppress the smoke in the post-combustion area. Low-temperature resynthesis of dioxins in air. The phosphorus-based inhibitor developed in the present invention can replace the sulfur-containing inhibitor, and compared with the 50% inhibition efficiency of the traditional sulfur-based inhibitor, the inhibition efficiency of the present invention is increased by 0.3-0.84 times. and did not increase the SO in the flue gas 2 , NO X It has the advantages of convenient operation and simple process, and does not need to adjust and modify the existing incinerator and flue gas treatment system; the phosphorus-based inhibitor developed by the present invention has the advantages of The source of the components is wide, the price is low, the running cost is significant, and it has important application value.

Description

technical field [0001] The invention relates to a technology for controlling dioxin emission in the incineration process of solid waste, in particular to a method for efficiently suppressing the generation of dioxin in a waste incineration process by utilizing a phosphorus-based inhibitor. Background technique [0002] In recent years, the output of domestic waste in my country has increased sharply, and the volume of domestic waste removal and transportation has doubled. Domestic waste incineration has long been the main method of domestic waste disposal due to its advantages of reduction, harmlessness and resource utilization. However, dioxin-like pollutants are easily produced in the process of waste incineration, which seriously restricts the development of clean incineration technology of domestic waste. How to control the generation and emission of dioxin-like pollutants during the incineration process has become an urgent problem to be solved in the field of waste 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 Patents(China)
IPC IPC(8): F23G7/00F23J15/02C09K3/22
CPCF23G7/00F23J15/02C09K3/22
Inventor 林晓青马云峰李晓东吴昂键陆胜勇黄群星严建华
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

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