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

Method for stabilizing fly ash

A stabilization and fly ash technology, applied in chemical instruments and methods, solid waste removal, waste treatment, etc., can solve the problems of unclear long-term leaching behavior of heavy metals, high cost of organic chelating agents, and difficulty in resource utilization, etc., to achieve Low cost, simple operation, no secondary pollutant effect

Inactive Publication Date: 2018-03-13
QINGDAO HAICHENG INTPROP SERVICES CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although chemical fixation can effectively fix heavy metals in fly ash, the cost of some organic chelating agents is high, and the long-term leaching behavior of heavy metals in complex environments is still unclear
In addition, since the physical and chemical properties of fly ash have changed significantly after stabilization, it also brings difficulties to the subsequent resource utilization, and other low-cost and environmentally friendly restoration technologies are urgently needed. Therefore, it is of great significance to seek to design a method for fly ash stabilization. Good economic and social benefits

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 stabilizing fly ash
  • Method for stabilizing fly ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The fly ash stabilization process involved in this embodiment is completed in the incineration residue stabilization device, and the specific steps are:

[0023] (1) Collect the acid waste gas during the landfill composting period in the landfill, store it in the waste gas storage tank, separate the collected acid waste gas into carbon dioxide gas and hydrogen sulfide gas, and store them in carbon dioxide gas cylinders and hydrogen sulfide gas respectively Inside the cylinder;

[0024] (2), collect 10kg of fly ash after garbage incineration and fill it into the spray chamber, cool down the fly ash and make the moisture content of the fly ash stable at 15-35%, the porosity stable at 35-55%, and then pass through the injection port into the reactor;

[0025] (3), set the temperature of the reactor at 50°C, turn on the peristaltic pump and fill the mixed gas into the reactor at a rate of 5L / min, wherein the volume ratio of carbon dioxide in the mixed gas is 70%, and the v...

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of garbage disposal and relates to a method for treating garbage residue after incineration, in particular to a method for stabilizing fly ash. The fly ashis stabilized by filling acidic gases into a reactor, and specific steps comprise: collecting the acidic gases, collecting incinerated fly ash, reacting and the like. The method is easy for operation, simple in operation and low in cost without secondary pollutants and can be used for stabilizing treatment of the fly ash. The device can realize indoor and outdoor in-situ fixation of the fly ash,and the reaction process realizes reuse of the acidic gases such as carbon dioxide and hydrogen sulfide.

Description

Technical field: [0001] The invention belongs to the technical field of garbage treatment, and relates to a method for treating garbage residues after incineration, in particular to a method for stabilizing fly ash, which realizes stabilizing fly ash by charging acid gas into a reactor. technical background: [0002] In recent years, with the improvement of living standards, the amount of domestic waste generated in my country has increased year by year. At present, incineration has become the main treatment method of domestic waste, accounting for about one-third of the total domestic waste. Waste incineration can realize the reduction and harmlessness of domestic waste. However, during the flue gas treatment process of waste incineration, secondary pollutants—incineration fly ash will be produced. The generation of fly ash accounts for about 3% to 5% of the domestic waste incineration (grate incinerator). Because fly ash contains a large amount of highly toxic heavy met...

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): B09B3/00
CPCB09B3/40Y02W30/20
Inventor 王莹马文静迟庆东蔡冬石云鹏
Owner QINGDAO HAICHENG INTPROP SERVICES CO LTD
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