Wet desulphurization technology and system using coal ash

A technology of wet desulfurization and fly ash, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve the problems of no good solutions for treatment and comprehensive recycling, and achieve no secondary pollution, The effect of low running cost

Inactive Publication Date: 2014-02-26
JINJIANG MEICHUANG ENVIRONMENTAL PROTECTION EQUIP
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to deal with the fly ash produced after combustion and how to achieve comprehensive recycling is extremely critical in industrial production. At present, fly ash i

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
  • Wet desulphurization technology and system using coal ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present case will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] The invention relates to a wet desulfurization process using fly ash, which mainly includes the following steps:

[0038] 1) Collect the ultra-fine fly ash in the flue gas after boiler combustion, and transport the collected ultra-fine fly ash to the liquid making pool; the ultra-fine fly ash contains active oxides;

[0039] 2) The active oxides in the ultrafine fly ash fully react with a certain proportion of water in the liquid making tank to obtain an alkaline solution;

[0040] 3) Transport the alkaline solution obtained in step 2 to the desulfurization circulation pool;

[0041] 4) The alkaline solution in the desulfurization circulation pool circulates between the desulfurization tower and the desulfurization circulation pool. The alkaline solution transported from top to bottom in the desulfurization tower and the rising flu...

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 discloses a wet desulphurization technology and system using coal ash. The wet desulphurization technology using coal ash mainly comprises the following steps: (1) collecting superfine coal ash in flue gas which is generated after boiler combustion, and conveying the collected superfine coal ash to a liquid preparation tank; (2) fully reacting activating oxides in the superfine coal ash with a certain proportion of water in the liquid preparation tank so as to obtain an alkaline solution; (3) conveying the alkaline solution to a desulphurization circulating pool; and (4) enabling the alkaline solution in the desulphurization circulating pool to circularly flow between a desulphurization tower and the desulphurization circulating pool so as to realize the removal of sulfur in the flue gas. The wet desulphurization system using coal ash comprises a dust collector, the liquid preparation tank, the desulphurization circulating pool and the desulphurization tower. According to the technology and the system, the removal of sulfur in the flue gas is realized by directly using the activating oxides contained in the coal ash. The desulfurized coal ash solid liquid generated after desulphurization can be reused, so that the comprehensive cyclic utilization of the coal ash is realized, and the utility value of the coal ash is fully exerted; and the wet desulphurization technology and system using the coal ash are particularly suitable for the removal of sulfur of sulfur dioxide in flue gas of small and medium-sized industrial pulverized coal boilers with the raw coal sulfur content of below 1.0%.

Description

technical field [0001] The present invention relates to the technical field of flue gas desulfurization of pulverized coal combustion, specifically refers to a wet desulfurization process using fly ash and its system, which is especially suitable for the sulfur dioxide removal from the flue gas of small and medium-sized industrial pulverized coal boilers with a sulfur content of less than 1.0% in raw coal. Desulfurization application. Background technique [0002] Pulverized coal industrial boiler is a new type of furnace developed in my country in recent years, and fly ash is the main solid waste discharged from pulverized coal industrial boiler. With the continuous development of industry, the technology of pulverized coal industrial boilers has been continuously matured, and has the advantages of fast start-up, wide load adjustment range, high degree of automation and low energy consumption, and has been put into use in industrial and civil fields more and more. How to 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
IPC IPC(8): B01D53/78B01D53/50B01D50/00
Inventor 赵长兴
Owner JINJIANG MEICHUANG ENVIRONMENTAL PROTECTION EQUIP
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