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

Method for desulfurized slurry dechlorination

A desulfurization slurry and dechlorination technology, applied in the field of desulfurization slurry dechlorination, can solve problems such as environmental pollution and serious problems, and achieve the effect of simple process

Inactive Publication Date: 2016-06-01
ANHUI UNIV OF SCI & TECH
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of wastewater contains heavy metals such as mercury, which is very polluting to the environment.

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
  • Method for desulfurized slurry dechlorination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 Medium plate ozone generator 1, bubbling reactor 2; air A, ozone B, filtrate C, chlorine gas D, dechlorinated filtrate E.

[0024] Using air A as a raw material, ozone B is generated in the plate type ozone generator 1; when the chloride ion content in the slurry is 5000 mg / L, the desulfurized gypsum dehydration filtrate C is passed through the bubbling reactor 2, and ozone B is continuously introduced into the kettle, Through the bubbling reaction, chlorine gas D is released, and the chlorine gas D is sent to post-treatment, and the dechlorination filtrate E has a chloride ion content of 1000mg / L and is sent back to the absorption tower, thereby reducing the chlorine content in the slurry and maintaining the chlorine ion content in the desulfurization slurry≯5000mg / L.

[0025] Implementation effect: filtrate dechlorination rate ≥ 80%.

[0026] The beneficial effects of the present invention are as follows: (1) Instead of directly dechlorinating the slurry, ...

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 belongs to the field of coal-fired flue gas treatment and relates to a method for desulfurized slurry dechlorination, in particular to a method comprising the steps that a flue gas desulfurization gypsum dehydration filter solution is adopted to be subjected to a reaction with ozone, chlorine gas is released, a dechlorinated filtering solution is sent back to an adsorption tower, and therefore the content of chlorine in slurry is lowered. The method has the advantages that the flue gas desulfurization gypsum dehydration filter solution is dechlorinated instead of directly dechlorinating slurry, and interference caused by desulfurized intermediate products in the desulfurized slurry to dechlorination is avoided; the ozone adopts air as raw materials, and no other raw materials are consumed; the ozone is used as an oxidizing agent for releasing chlorine gas, and the technology is simple; due to a bubbling reaction, the chlorine gas is released, the air achieves the air lifting effect, and gas flow power can be provided not by a vacuum pump; the purpose of controlling the content of chlorine ions in the desulfurized slurry is achieved satisfactorily.

Description

technical field [0001] The invention belongs to the field of boiler tail gas treatment. The invention relates to a method for dechlorination of desulfurization slurry, more specifically, for the removal of chloride ions in the flue gas desulfurization slurry, the dehydration filtrate of desulfurization gypsum reacts with ozone to release chlorine gas, and the dechlorinated filtrate is sent to A method for reducing the chlorine content in the slurry by returning it to the absorption tower. Background technique [0002] There are two main sources of chloride ions in the desulfurization slurry: one is that the chlorine contained in the coal is burned to form chlorides that enter the desulfurization tower with the flue gas, and enter the desulfurization slurry under wet washing; Chloride ions accumulate as they evaporate. [0003] Studies have shown that chloride ions in water > 1000 mg / L for a long time have extremely high polarity to promote corrosion reactions, and have ...

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): B01D53/96B01D53/80B01D53/50C02F1/78
CPCB01D53/96B01D53/502B01D2251/404B01D2257/302B01D2258/0283B01D2259/126C02F1/78C02F2101/12
Inventor 徐继红陶俊
Owner ANHUI UNIV OF SCI & TECH
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