Ultralow emission online monitoring system for flue gas pollutants of coal-fired power plants
A technology for monitoring systems and coal-fired power plants, applied to measuring devices, material analysis through optical means, instruments, etc., can solve the problems of material waste, no system calibration, and increased waste disposal costs, so as to reduce the cost of acid addition and reduce Effect of contact time and contact area
Active Publication Date: 2016-10-26
NANJING HOPES TECH
View PDF12 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] The above patented technical solutions all limit the concentration of the acid liquid entering the condensing device, and at the same time heat the acid liquid to varying degrees, which can suppress SO to a certain extent 2 , NO 2 The dissolution of the components in water ensures the accuracy of determining the components to be measured; but the above scheme also has certain defects, 1) the concentration of the acid solution added cannot be well controlled, and the concentration of the acid solution is too large, which may cause the material Waste, increase the cost of waste disposal, and even corrode the heat exchange tube of the condenser; 2) No system calibration
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0032] Embodiment: on-line monitoring system as attached figure 1 As shown, it mainly includes sampling unit 1, back blowing unit 2, double-tube electric heating heating pipeline 9, calibration unit 3, dew point meter 5, air pump 6, NOx converter 7, infrared analyzer 8 and data acquisition, processing and transmission unit , its main innovation is that the monitoring system is equipped with an acid dehumidifier 4 between the calibration unit 3 and the dew point meter 5, which is used to acidify the flue gas entering the acid dehumidifier to prevent the components to be measured in the flue gas from Dissolved in the condensate; the acid-adding dehumidifier 4 has an on-site calibration channel for zero point and span calibration of the analysis device.
[0033] In the embodiment, the sampling unit 1 includes an adjustable heating sheath at 0-250°C, and the heating sheath at 180°C is preferred; the sampling probe rod of 1m-3m can be selected, and the 1.5m long-term stable high-te...
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
Login to view more Abstract
The invention discloses an ultralow emission online monitoring system for flue gas pollutants of coal-fired power plants. The system comprises a sampling unit, a back blowing unit, a heat tracing pipe, a calibration unit, a dew-point meter, an air pump, an NOX converter, an analyzing device and a data collecting, processing and transmitting unit. The system is characterized in that an acidification dehumidifier is arranged between the calibration unit and the dew-point meter and used for acidification of flue gas entering the acidification dehumidifier to prevent to-be-tested components in flue gas from dissolving in condensate, and the acidification dehumidifier is provided with an in-situ calibration passage used for calibration of a zero point and a measuring range of the analyzing device. By the ultralow emission online monitoring system, the problem of how to realize accurate and reliable online monitor ultralow emission of sulfur dioxide and nitrogen oxides in desulfurized and denitrified flue gas of the coal-fired power plants is solved, parameters are provided for an ultralow emission process of the coal-fired power plants, and national requirements of ultralow emission online monitoring are met.
Description
technical field [0001] The invention relates to the monitoring of air pollutants from fixed pollution sources, in particular to an online monitoring system for ultra-low emission of air pollutants in coal-fired power plants. Background technique [0002] Ultra-low emission means that coal-fired boilers in thermal power plants adopt efficient collaborative removal integrated system technology for various pollutants in the process of power generation operation and terminal treatment, so that the emission concentration of air pollutants basically meets the emission limits of gas-fired units, that is, soot , sulfur dioxide (SO 2 ), nitrogen oxides (NOx) emission concentration shall not exceed 10mg / m 3 、35mg / m 3 , 50mg / m 3 , whose purpose is to reduce conventional air pollutant emissions from coal-fired power plants, effectively improve environmental quality, and fully implement ultra-low emissions, which can greatly reduce coal consumption and pollution emissions for power ge...
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
Login to view more Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504
CPCG01N21/3504
Inventor 顾潮春刘乙林义进万智吴琼水谢兆明陆海斌
Owner NANJING HOPES TECH
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
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