Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A flue gas multiple aeration desulfurization and denitrification system and control method

A technology of desulfurization, denitrification and aeration, which is applied in the direction of separation method, self-adaptive control, general control system, etc., can solve the problems of lower pH value of alkaline wastewater and high cost of alkaline wastewater treatment, and achieve the effect of reducing treatment cost

Active Publication Date: 2015-08-12
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the objectives of the present invention is to provide a flue gas multiple aeration desulfurization and denitrification system, which uses the chemical reaction between alkaline wastewater and flue gas to remove high-valence nitrogen oxides and sulfur oxide pollutants in the flue gas, and Reduce the PH value of alkaline wastewater, aiming to solve the problem of high cost of existing flue gas desulfurization and denitrification and alkaline wastewater treatment

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
  • A flue gas multiple aeration desulfurization and denitrification system and control method
  • A flue gas multiple aeration desulfurization and denitrification system and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] In order to fully react the alkaline wastewater with the sulfur oxides and nitrogen oxides in the flue gas, the discharged flue gas meets the emission standards. First, through a large number of experiments, the relationship between the temperature of the alkaline waste liquid, the pH value of the alkaline waste liquid, the liquid level of the alkaline waste liquid, the spraying speed of the alkaline waste liquid, the flow rate of the flue gas and the composition of the exhausted flue gas is obtained; On-line data analysis establishes a fuzzy control model; finally, the system monitors the temperature of alkaline waste liquid in the flue gas desulfurization and denitrification device of alkaline wastewater in real time, the pH value of alkaline waste liquid, and the change of flue gas flow rate, and controls the change of alkaline waste water. The height of the liquid level, the replacement of alkaline waste liquid, and the spraying speed of alkaline waste liquid can rea...

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 flue gas repeated aeration desulfurization and denitrification system which comprises a tower body, a basic solution tank, a recycling tank, a smoke passage, a chimney, a monitoring device, an executive device, a computing control device and two aeration rooms, wherein each aeration room comprises an aeration tank and a spraying rack. The invention further discloses a fuzzy control method for the flue gas repeated aeration desulfurization and denitrification system. The fuzzy control method comprises the following steps: step 1, generating a fuzzy control model rule list; step 2, adjusting and controlling the liquid level height of alkali wastewater in the aeration tanks; step 3: adjusting and controlling the water flow of spraying passages. Through the utilization of the alkali wastewater to perform flue gas desulfurization and denitrification treatment, the cost of the flue gas desulfurization and denitrification in the prior art is reduced.

Description

technical field [0001] The invention relates to the field of coal-fired boiler flue gas treatment technology and automatic control, in particular to a flue gas multiple aeration desulfurization and denitrification system and a fuzzy control method. Background technique [0002] Coal is the main fuel for thermal power generation in my country. The sulfur oxides and nitrogen oxides produced in the coal combustion process have caused increasingly serious harm to the atmospheric environment in my country. The commonly used flue gas desulfurization method is the lime / limestone-gypsum wet method, which has relatively high efficiency. However, domestic research on this technology has not yet made a breakthrough. At present, the system is mainly imported from Japan, and 70% of small and medium-sized boiler enterprises in my country cannot afford the massive infrastructure investment and high operating costs of the commonly used desulfurization process. In addition, low-grade gypsum...

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): B01D53/78B01D53/60G05B13/00
Inventor 郭华芳李家杰尹华
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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
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