Ammonia flue gas desulfurization device

A desulfurization device and flue gas technology, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve problems such as ammonia escape, energy consumption, and occupation of land resources, so as to improve absorption efficiency, reduce power consumption, and avoid The effect of ammonia slip

Inactive Publication Date: 2012-01-11
李鹏举
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Sulfur dioxide is one of the main pollutants in current air pollution. Flue gas desulfurization is an urgent task. At present, the mainstream domestic flue gas desulfurization process is based on calcium method, but the by-product of calcium desulfurization technology is mainly landfill, which is easy to produce secondary Pollution and occupation of land resources and other issues
However, there are still problems with the ammonia desulfurization process: the drying of ammonium sulfate crystals uses electricity or steam heating, which consumes energy; the demister adopts a folding plate type, which is difficult to remove 0.01-10 μm ammonia aerosol, and there is a problem of ammonia escape, causing secondary pollution. These problems have restricted the development of ammonia desulfurization technology

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
  • Ammonia flue gas desulfurization device
  • Ammonia flue gas desulfurization device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0013] This process is used for flue gas desulfurization of coal-fired boilers. Such as figure 1 As shown, the high-temperature flue gas at 130-160°C enters the crystallization tank (2) at the bottom of the absorption tower (1) after passing through the heat exchanger (23), and is contacted with the cooling spray layer (3) ammonium sulfate solution for washing, and the temperature of the flue gas drops At the same time, the ammonium sulfate solution is evaporated, concentrated and crystallized, and then enters the middle part of the absorption tower (1), and the swirling absorption distribution plate (4) is combined with the absorption spray layer (5) to form the absorption section, and the SO 2 After washing and absorbing, it enters the upper part of the absorption tower (1) to install a swirl type defogging distribution plate ...

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 high-efficiency ammonia flue gas desulfurization technique and device complete SO2 absorption, ammonium sulfate concentrated crystallization and demisting process in an absorption tower, wherein the SO2 absorption in the tower adopts a mode of combining a swirl plate and a spray layer; the demisting process adopts a swirl plate-folding plate-silk screen combination type demister; an oxidation tank is arranged outside of the tower. High temperature glue gas heat source introducing into the tower is utilized for evaporation, concentration and crystallization of ammonium sulfate solution, a heat exchanger is arranged at the inlet flue channel, a fan is utilized for conveying heated air used as a heat source for drying the ammonium sulfate, thereby reducing power consumption of crystallization and drying. The desulfurization technique has the characteristics of high desulfurization efficiency, low running cost, and comprehensive utilization of a byproduct of ammonium sulfate.

Description

technical field [0001] The patent of the present invention belongs to flue gas desulfurization technology, specifically a wet ammonia flue gas desulfurization process and device. technical background [0002] Sulfur dioxide is one of the main pollutants in current air pollution. Flue gas desulfurization is an urgent task. The current domestic mainstream flue gas desulfurization process is mainly based on calcium method, but the by-product of calcium desulfurization technology is mainly landfill, which is easy to produce secondary Pollution and occupation of land resources and other issues. [0003] Ammonia desulfurization technology is a desulfurization process that uses ammonia or waste ammonia water as a desulfurizer to react with sulfur dioxide in flue gas to finally generate ammonium sulfate. Amino absorbs SO 2 The rate and efficiency of the desulfurization agent are higher than that of the calcium base, the desulfurization efficiency is over 95%, and the liquid-gas ra...

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): B01D53/78B01D53/50
Inventor 李鹏举
Owner 李鹏举
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