Sintering flue gas ammonia method desulfurizing system

An ammonia desulfurization and sintering flue gas technology, applied in the field of flue gas desulfurization, can solve the problems of high operation cost, large steam consumption, low oxidation efficiency, etc., and achieve the effects of no secondary pollution, saving heat consumption and reasonable process.

Active Publication Date: 2007-10-17
CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the commonly used ammonia flue gas desulfurization at present: the oxidation of ammonium sulfite is usually carried out in the desulfurization tower, and the result of oxidation reduces the effective concentration of ammonia, which is not conducive to the removal of sulfur dioxide in the flue gas and the oxidation efficiency is low; The existing technology uses steam to evaporate and concentrate ammonium sulfate, which requires a large amount of steam and high operating costs; there is still no effective solution to the problem of ammonia escape in the desulfurization tower

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
  • Sintering flue gas ammonia method desulfurizing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0009] see Attachment

[0010] The liquid ammonia is transported to the desulfurization site by a closed tanker, and the liquid ammonia is sent to the liquid ammonia tank 2 through the ammonia unloading pump 1 for storage. After being heated by the liquid ammonia vaporizer 3, the liquid ammonia is vaporized and sent to the ammonia gas storage tank 4, and the ammonia gas in the ammonia gas storage tank 4 is connected to the mixer 5 through a pipeline for the desulfurization tower 6 to use ammonia gas. The sintering plant can use the waste ammonia water produced during the sintering process as a desulfurizing agent, and add it to the desulfurization tower 6 and the oxidation tank 10 for reaction. The desulfurization tower 6 is a three-stage desulfurization tower. A circulation pump 9 is installed outside the desulfurization tower 6. The circulation pump 9 send...

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 relates to an ammonia desulfurization system for sintering flue gas, and the system comprises a gasifying equipment, a absorbing equipment, an oxidation equipment, a concentration equipment and filter equipment etc. The ammonia desulfurization system for sintering flue gas of the invention can removes the SO2 in the flue gas effectively, but also can desulfurizate by reacting with SO2 in the flue gas using carbonization waste water (liquid ammonia gasified). The product of ammonium sulfite is oxidated in a low concentration at the common pressure, and then is concentrated by evaporation by the quantity of heat of the flue gas to greatly save the heat dissipation of concentration by evaporation to arrive at the aim of economize on energy. The ammonia sulfate solution in high concentration is filtrated, and then is send to the ammiaonia sulfate plant to produce chemical fertilizer. The flue gas desulfurization system of the invention has a reasonable process, makes the discharge of the flue gas reach the standard, forms without secondary pollution, treatment the waste gas by waste carbonization waste water, and produces the byproduct-chemical fertilizer.

Description

technical field [0001] The invention relates to flue gas desulfurization technology, in particular to an ammonia method desulfurization system for sintering flue gas. Background technique [0002] With the construction of cities and the improvement of people's living standards, energy consumption continues to increase. Because my country is mainly a large energy country with coal as its source material, the amount of sulfur dioxide discharged into the atmosphere has increased rapidly from 19.95 million tons in 2000 to 25.49 million tons in 2005. [0003] In the commonly used ammonia flue gas desulfurization at present: the oxidation of ammonium sulfite is usually carried out in the desulfurization tower, and the result of oxidation reduces the effective concentration of ammonia, which is not conducive to the removal of sulfur dioxide in the flue gas and the oxidation efficiency is low; In the prior art, steam is used to evaporate and concentrate ammonium sulfate, which requ...

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): B01D53/78B01D53/50F27B21/08F27D17/00
Inventor 熊敬超梁铁樊飞勇李先旺王贵明李啸夏晓群罗海兵李丽
Owner CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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
PatSnap group products

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