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

Manufacturing method for desulfurization and denitrification agent additive by limestone-gypsum method

A manufacturing method, additive technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc.

Inactive Publication Date: 2014-04-02
高同柱
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, coal-fired power plants across the country are facing difficulties in purchasing coal, poor coal quality, especially high and fluctuating coal-fired sulfur content, desulfurization systems are often operating under abnormal conditions, and desulfurization efficiency is low

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] An additive for limestone-gypsum wet flue gas desulfurization and denitrification, its components and weight percentages are: sodium nitrate 20, cobalt chloride 5, cobalt oxide 1 magnesium sulfate 10 adipic acid 50, citric acid 7, dihydrate chlorine Copper 7 Stir to mix well.

[0014] The flue gas SO2 concentration at the inlet of the desulfurization system is 3000mg / Nm3; the NOx concentration is 840mg / Nm3; the liquid-gas ratio is 9.9; the calcium-sulfur ratio is 1.05. The additive concentration is 1000mg / l, the desulfurization efficiency is increased by 14%, and the denitrification efficiency is 68%.

Embodiment 2

[0016] An additive for limestone-gypsum wet flue gas desulfurization and denitrification, its components and weight percentages are: potassium permanganate 40, cobalt oxide 1 adipic acid 30, cobalt nitrate 5, manganese sulfate 10, copper nitrate 10 , Humic acid 4 Stir and mix evenly.

[0017] The flue gas SO2 concentration at the inlet of the desulfurization system is 2500mg / Nm3; the NOx concentration is 880mg / Nm3; the liquid-gas ratio is 9.8; the calcium-sulfur ratio is 1.05. The additive concentration is 900mg / l, the desulfurization efficiency is increased by 15%, and the denitrification efficiency is 76%.

Embodiment 3

[0019] An additive for limestone-gypsum wet flue gas desulfurization and denitrification, its components and weight percentages are: sodium chlorite 40, cobalt oxide 1 ammonium phosphate 10, sodium acetate 10, sodium humate 10, sodium citrate 10 , Copper Carbonate 10 Cobalt Oxide 9 Stir and mix evenly.

[0020] The flue gas SO2 concentration at the inlet of the desulfurization system is 3500mg / Nm3; the NOx concentration is 800mg / Nm3; the liquid-gas ratio is 10.5; the calcium-sulfur ratio is 1.05. The additive concentration is 1000mg / l, the desulfurization efficiency is increased by 12%, and the denitrification efficiency is 71%.

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 manufacturing method for a desulfurization and denitrification agent additive by a limestone-gypsum method. The manufacturing method is characterized in that the additive consists of the components in percentage by weight: 40-60 percent of a catalytic promoter substance, 20-40 percent of organic acid and salt substances and 15-40 percent of a synergist substance. The additive adopted in the manufacturing method can improve the desulfurization efficiency of an absorption tower, adapt to high-sulfur coal and enable the SO2 outlet concentration to meet a standard; furthermore, a serous fluid circulating pump can be stopped to different extents, and the aim of saving the energy can be fulfilled; moreover, the additive is easily dissolved in water and can promote dissolving of limestone and reduce the using amount of the limestone; the pH value buffering capacity of limestone serous fluid is improved, and rapid reduction of the pH value of the limestone serous fluid in a continuous sulfur dioxide absorption process is relieved; generation of calcium sulfite soft dirt is inhibited, and a demister can be prevented from being blocked. The desulfurization and denitrification agent additive has the characteristics of simplicity and convenience in use, no production of air bubbles in the using process and no corrosion to equipment; compared with the conventional limestone, the desulfurization and denitrification agent additive has the advantages that the content of NO in smoke gas can be also reduced; under the same liquid-gas-ratio condition, the desulfurization efficiency is improved by 8-18 percent, and the denitrification efficiency is over 50 percent; desulfurization and denitrification effects and a smoke gas purification effect are achieved.

Description

technical field [0001] The invention belongs to the technical field of flue gas treatment and control, in particular to a manufacturing method for additives for limestone-gypsum wet flue gas desulfurization and denitrification. Background technique [0002] Air pollution control has become the theme of environmental governance in today's era, and the main indicator of atmospheric substances is carbon dioxide (SO 2 ) and nitrogen oxides (NO X ). The Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China jointly issued the "Pollutant Emission Standards for Thermal Power Plants" which will be implemented on January 1, 2012. It clearly stipulates that from January 1, 2014, the SO 2 Emission limit implementation 200mg / Nm 3 , NO X Execution of emission limits, 100mg / Nm 3 Stricter emission limits than the existing GB13223-2003 regulations, especially for NO X German emissions will...

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): B01D53/78B01D53/60
Inventor 高同柱路艳霞
Owner 高同柱
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