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

Flue gas desulfurization by magnesia wet method and recovering process of automatic concentration of product

A technology of wet flue gas desulfurization and magnesium oxide, applied in chemical instruments and methods, magnesium sulfate, separation methods, etc., can solve the problems of complex structures of absorption liquid pools and oxidation towers, increased power consumption of desulfurization circulating pumps, and enlarged oxidation fans Power consumption and other issues to achieve the effect of improving reliability and economy, increasing reliability and avoiding external energy consumption

Active Publication Date: 2009-09-16
TSINGHUA UNIV
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If steam concentration is used, not only the energy consumption is high, but also the concentration equipment needs to be added; strengthening the cycle desulfurization and oxidation enrichment will greatly increase the power consumption of the desulfurization circulating pump, reduce the oxygen utilization rate and increase the power consumption of the oxidation fan; As the comparison process of the present invention, the temperature regulation and oxidation of thick slurry method is relatively economical, but the temperature regulation always needs energy consumption, and the structure of the absorption liquid pool and the oxidation tower is complicated

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
  • Flue gas desulfurization by magnesia wet method and recovering process of automatic concentration of product
  • Flue gas desulfurization by magnesia wet method and recovering process of automatic concentration of product
  • Flue gas desulfurization by magnesia wet method and recovering process of automatic concentration of product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 2 , image 3 As shown, the sulfur-containing flue gas from the boiler after electrostatic precipitator or bag dust removal is cooled by the flue gas reheating device 4 and then enters the evaporation tower 1 in the evaporation oxidation system for evaporation and cooling. The cooled flue gas enters the SO together with the oxidized air 2 The absorption tower 2 performs desulfurization, and then leads to the chimney to be emptied through the demisting device 3 and the flue gas reheating device 4. The magnesium oxide powder used as a desulfurizer is first mixed with circulating absorption liquid in the magnesium oxide mixing tank 5, and a small stream of high-pressure fluid is drawn from the outlet side of the circulating pump 12 and enters tangentially from the bottom side of the mixing tank to form and stir the blades. The upward swirling flow does not cause deposition under the paddle; and the stirring paddle forms an internal circulation in the tank,...

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

Flue gas desulfurization by the magnesia wet method and a recovering process of automatic concentration of the product relates to the improvement of the existing flue gas desulfurization by the magnesia wet method and product recovering process by the thick slurry process, belonging to the technical field of flue gas desulfurization and product recycling. The process is technically characterized in that the thick slurry is shunted in the process of recyclable absorption and desulfurization; spray cooling is carried out to cool flue gas; inspissation liquid is oxidized to generate MgSO4; then filtration, crystallize and the like are carried out to generate mm level MgSO4. 7H2O or MgSO4. H2O crystal grain. The invention not only features in low cost, but also has low spray flow rate and power consumption as well as outstanding water conservation effect; what is more, the invention avoids external power consumption of the concentration of the desulfurized product, can remarkably improve stability and economical efficiency of recovery. All steps of automatic concentration are linked with one and another, as a result, the application range of the invention is expanded to high-sulphur coal and technical support is provided for more economical, effective and direct recovery of magnesium sulfate monohydrate.

Description

technical field [0001] The invention relates to a recovery process for magnesium oxide wet flue gas desulfurization and product self-concentration, and belongs to the technical field of flue gas desulfurization and product recycling. technical background [0002] The magnesium oxide flue gas desulfurization and product recovery processes that have been proposed have not paid much attention to the economic effectiveness of magnesium sulfate recovery. Especially in how to use the field conditions of flue gas desulfurization to change the desulfurization main line process and make it form an organic whole with the recovery process, so as to further improve the technical and economic performance of desulfurization and recovery, there is still potential to be tapped. [0003] In the existing wet flue gas desulfurization process, it is customary to first cool the flue gas by water spraying, so that the temperature of the flue gas entering the tower can be reduced to a temperature ...

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): B01D53/50B01D53/78C01F5/40
Inventor 马永亮徐康富汪黎东
Owner TSINGHUA 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