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

Multiple reaction integrated process for desulfuizing from fume by dry method and its system

A dry flue gas desulfurization and flue gas technology, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve problems such as complex system structure, human health hazards, and high operating costs, and achieve extended reaction space and reaction time, improve desulfurization efficiency, and increase the effect of reaction rate

Inactive Publication Date: 2006-02-01
WUHAN KAIDI ELECTRIC POWER CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the circulating fluidized flue gas desulfurization method also has the following disadvantages: the desulfurizing agent used in this method is high-quality calcium hydroxide Ca(OH) 2 Or calcium oxide CaO that needs to be processed by the digestive system. On the one hand, due to high-quality calcium hydroxide Ca(OH) 2 Or the price of calcium oxide CaO is also high, which greatly increases the operating cost of the entire desulfurization system; on the other hand, due to the addition of a digestive system, the structure of the entire desulfurization system is complicated, the operating cost is high, and the surface activity of slaked lime particles is not easy to guarantee
In addition, since calcium hydroxide Ca(OH) 2 Or calcium oxide CaO has certain hazards to human health. Therefore, when using it as a desulfurizer, it is necessary to ensure that the transportation process and the desulfurization system have good sealing and safety measures, which makes the system structure more complicated and the operating cost cannot be reduced.

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
  • Multiple reaction integrated process for desulfuizing from fume by dry method and its system
  • Multiple reaction integrated process for desulfuizing from fume by dry method and its system
  • Multiple reaction integrated process for desulfuizing from fume by dry method and its system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The following is a further detailed description of the multi-reaction integrated dry flue gas desulfurization process and its system of the present invention for a coal-fired power plant boiler in conjunction with the accompanying drawings:

[0025] The multi-reaction integrated dry flue gas desulfurization system shown in the figure is mainly composed of a limestone powder injection device, a humidifying flue 9, a desulfurization tower 28, External electrostatic precipitator 24, induced draft fan 25 and chimney 26 etc. constitute.

[0026]The limestone powder injection device consists of a limestone powder bin 3, a rotary powder feeder 2 installed at the lower end of the limestone powder bin 3, a compressor 1 connected to the rotary powder feeder 2 through a powder delivery pipeline 4, and a powder feeder installed at the end of the powder delivery pipeline 4. Limestone powder nozzle 5 composition. The limestone powder nozzle 5 is arranged above the furnace of the coa...

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

A multiple reactions integrated process for desulfurizing from the fume by dry method includes such steps as spraying limestone powder in high-temp combustion box from its top to decompose calcium carbonate into calcium oxide and CO2, absorbing SO2 from fume by partial calcium oxide to generate calcium sulfate, spraying water to activate calcium oxide to transform partial calcium oxide to calcium hydroxide and absorb SO2 from fume to generate calcium sulfite, and using the residual calcium hydroxide and calcium oxide to desulfurize the fume in desulfurizing tower. Its system is composed of limestone powder sprayer, moistening flue, desulfurizing tower, external electric duster, draught blower and chimney.

Description

technical field [0001] The invention relates to a flue gas desulfurization technology of a coal-fired power station, in particular to a multi-reaction integrated dry flue gas desulfurization process and a system thereof. Background technique [0002] my country is one of the few countries in the world that use coal as the main energy source. Coal has always accounted for more than 70% of the primary energy production and consumption in my country. It is imperative to control the pollution caused by sulfur dioxide emissions. [0003] At present, the technologies used for flue gas desulfurization in coal-fired power plants generally include wet, semi-dry and dry desulfurization. Calcium spraying in the furnace is a dry desulfurization technology developed in the 1960s. Because it uses cheap limestone, calcium carbonate CaCO 3 As a desulfurizer, it has the characteristics of low investment and simple process. It was valued and developed by Europe, the Unite...

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): B01D53/75B01D53/50B01D53/81
Inventor 韩旭刘亚丽李瑞鑫
Owner WUHAN KAIDI ELECTRIC POWER 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