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

Dioxin inhibitor in domestic waste low-temperature pyrolysis furnace and its preparation method and application

A technology of low-temperature pyrolysis and domestic waste, applied in fuel additives, petroleum industry, fuel, etc., can solve the problems of difficult dioxin emissions and other problems, and achieve the effects of easy industrial production, emission control, and simple synthesis methods

Active Publication Date: 2017-12-01
SOUTH CHINA UNIV OF TECH +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-temperature-resistant, high-efficiency inhibitor that can inhibit the formation and adsorption of dioxin and its preparation method for the formation process of dioxin in the existing low-temperature pyrolysis furnace for domestic waste, so as to solve the problem of garbage Problems Difficult to Reach Standards for Dioxin Emissions in Low Temperature Pyrolysis Process

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

[0031] Use heavy carbonic acid and kaolin to mix evenly with a mass ratio of 1:3.0, soak in 4mol / L sodium hydroxide solution at 50°C for 2.5 hours, and calcinate at 700°C for 3 hours to obtain a mixed powder. At high temperature, timely The mixture and the sepiolite are uniformly mixed in a mass ratio of 1:1, and the dioxin inhibitor in the low-temperature pyrolysis furnace for domestic garbage of this embodiment is obtained after natural cooling, grinding, and passing through a 50-mesh sieve.

[0032] The kaolin used has a particle size of 30 mesh and a specific surface area of ​​45m 2 / g, total pore volume 0.05m 2 / g, containing 39% SiO 2 ,38% Al 2 O 3 , Other components account for 23%, and the ignition loss rate is 19%.

[0033] The calcium carbonate used is heavy calcium carbonate, the particle size is 20 mesh, and the purity is greater than 93%.

[0034] The sepiolite used is raw sepiolite, with a particle size of 30 mesh and a specific surface area of ​​250m 2 / g, containing 5...

Embodiment 2

[0037] Use heavy carbonic acid and kaolin to mix uniformly with a mass ratio of 1:2.5, soak it in a 6mol / L sodium hydroxide solution at 50°C for 3 hours, and calcinate at 800°C for 3 hours to obtain a mixed powder. At high temperature, The mixed powder and sepiolite have a mass ratio of 1:1 and uniformly mixed in time. After natural cooling, grinding, and passing through a 50-mesh sieve, the dioxin inhibitor in the low-temperature pyrolysis furnace for domestic garbage of this embodiment is obtained.

[0038] The kaolin used has a particle size of 50 mesh and a specific surface area of ​​60m 2 / g, total pore volume 0.08m 2 / g, containing 40% SiO 2 ,35% Al 2 O 3 , Other ingredients account for 25%, and the ignition loss rate is 20%.

[0039] The calcium carbonate used is heavy calcium carbonate, the particle size is 20 mesh, and the purity is greater than 93%.

[0040] The sepiolite used is raw sepiolite ore with a particle size of 30 mesh and a specific surface area of ​​400m 2 / g, c...

Embodiment 3

[0043] Use heavy carbonic acid and kaolin to mix evenly with a mass ratio of 1:2.5, soak in 6mol / L sodium hydroxide solution at 70°C for 2.5 hours, and calcinate at 800°C for 2.5 hours to obtain a mixed powder. At high temperature, The mixture and sepiolite were mixed uniformly in time with a mass ratio of 1:0.5, and after natural cooling, grinding, and passing through a 50-mesh sieve, the dioxin inhibitor in the low-temperature pyrolysis furnace for domestic garbage of this embodiment was obtained.

[0044] The kaolin used has a particle size of 50 mesh and a specific surface area of ​​60m 2 / g, total pore volume 0.08m 2 / g, containing 40% SiO 2 ,35% Al 2 O 3 , Other ingredients account for 25%, and the ignition loss rate is 20%.

[0045] The calcium carbonate used is heavy calcium carbonate, the particle size is 20 mesh, and the purity is greater than 93%.

[0046] The sepiolite used is raw sepiolite ore with a particle size of 30 mesh and a specific surface area of ​​400m 2 / g, co...

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
specific surface areaaaaaaaaaaa
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention discloses a dioxin inhibitor in a low temperature pyrolyzing furnace for domestic garbage as well as a preparation method and application of the dioxin inhibitor. The dioxin inhibitor in the pyrolyzing furnace is mainly prepared from the following raw materials of CaCO3, kaolin and sepiolite. The preparation method comprises the following steps of mixing the kaolin with the calcium carbonate in the proportion of the kaolin to the calcium carbonate being (1 to 2) to (1 to 3 ), then performing treatment, and then mixing a treated mixture with the sepiolite in the proportion of the treated mixture to the sepiolite being (1 to 0.5) to (1 to 1.0 ). The inhibitor is uniformly mixed with pre-treated domestic garbage in the low temperature pyrolyzing furnace, or covers the garbage, so that thermolysis treatment is performed on the surface of the garbage, the discharge concentration of dioxin in flue gas for the low temperature pyrolyzing furnace can be reduced by 85.4-92.8%. The inhibitor has the functions of restraining the formation of the dioxin in the low temperature pyrolyzing furnace and adsorbing the dioxin, and besides, also has the advantages of being resistant to high temperature, environmentally-friendly, low in cost, free from secondary pollution and the like. The dioxin inhibitor disclosed by the invention is convenient to prepare and use, industrialized production is easy to realize, and the dioxin inhibitor is suitable for being used in the low temperature pyrolyzing furnace.

Description

Technical field [0001] The invention relates to an inhibitor, in particular to the preparation of a dioxin inhibitor in a low-temperature pyrolysis furnace of domestic garbage, and a method of use thereof, and is suitable for a low-temperature pyrolysis furnace of a living to reduce the dioxin at the flue gas outlet of the low-temperature pyrolysis furnace British emission concentration. Background technique [0002] In recent years, the treatment of rural domestic waste has become an urgent problem to be solved. Among them, the updraft low-temperature pyrolysis technology is particularly suitable for the treatment of scattered and small amounts of rural domestic waste due to its good reduction effect, low investment, and convenient operation and maintenance. At present, it has been widely used in some rural areas of my country. The pyrolysis furnace treats domestic waste through slow smolder-pyrolysis under low oxygen conditions. It does not need to provide auxiliary fuel. It d...

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): C10L10/00
CPCC10L10/00C10L2230/08
Inventor 程江雷鸣海景卢加伟程涛
Owner SOUTH CHINA UNIV OF 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