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

A method of desulfurization using zinc oxide slurry containing additives

A zinc oxide slurry and additive technology, which is applied to chemical instruments and methods, separation methods, and dispersed particle separation, can solve the problems of high viscosity of zinc oxide slurry, affect normal production, absorb environmental pollution, etc., achieve low cost and save resources , the effect of reducing pollution

Active Publication Date: 2016-08-31
江苏蓝电环保股份有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that this technology closely combines the desulfurization process with the original zinc smelting process. The absorbent uses dust, waste residue and waste electrolyte containing zinc oxide in the factory, and the zinc sulfate solution and solid slag produced can be returned to the factory. The re-use of related workshops solves the problem of the source of the absorbent and the treatment of the product, maximizes the utilization of resources, reduces the working capital, and reduces the operating cost. However, it is found that the method has absorption Poor effect, high viscosity of zinc oxide slurry, easy to block and other problems, not only incomplete absorption will continue to cause environmental pollution, but also affect normal production

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

[0025] (1) First mix water and zinc oxide at a weight ratio of 1:1 to make a zinc oxide slurry;

[0026] (2) Mix triethanolamine (TEA), sodium chloride (NaCl), and Tween 80 at a ratio of 1.2:0.4:0.5 to make an additive;

[0027] (3) Add additives made of triethanolamine (TEA), sodium chloride (NaCl) and Tween 80 to the zinc oxide slurry at a rate of 0.2% of the total weight of the zinc oxide slurry to make the additives made of triethanolamine (TEA) , sodium chloride (NaCl), and Tween 80 additives for flue gas desulfurization zinc oxide slurry, and put the additive-containing zinc oxide slurry into the slurry circulation tank;

[0028] (4) The zinc smelter contains SO 2 Concentration of 12000 mg / m 3 The flue gas is passed into the booster fan, the flow rate of the fan matches the gas volume, and the wind pressure reaches above 5000Pa;

[0029] (5) Zinc smelters contain SO after pressurization 2 Concentration of 12000 mg / m 3 The flue gas enters the bottom of the absorption...

Embodiment 2

[0031] (1) First mix water and zinc oxide at a weight ratio of 1:0.54 to make a zinc oxide slurry;

[0032] (2) Triethanolamine (TEA), calcium chloride (CaCl 2 ), polyethylene glycol 20000 is mixed in the ratio of 2:0:5:1.5 to make additives;

[0033] (3) will be composed of triethanolamine (TEA), calcium chloride (CaCl 2 ), additives made of polyethylene glycol 20000 are added to the zinc oxide slurry at a rate of 0.05% of the total weight of the zinc oxide slurry to prepare a mixture containing triethanolamine (TEA), calcium chloride (CaCl 2 ), polyethylene glycol 20000 additive for flue gas desulfurization zinc oxide slurry, and the additive-containing zinc oxide slurry into the slurry circulation tank;

[0034] (4) The zinc smelter contains SO 2 Concentration of 10000 mg / m 3 The flue gas is passed into the booster fan, the flow rate of the fan matches the gas volume, and the wind pressure reaches above 5000Pa;

[0035] (5) Zinc smelters contain SO after pressurization...

Embodiment 3

[0037] (1) First mix water and zinc oxide at a weight ratio of 1:3 to make a zinc oxide slurry;

[0038] (2) 2-amino-2-methyl-1-propanol, calcium chloride (CaCl 2 ) and sodium dodecylbenzenesulfonate are mixed in a ratio of 1:0.2:0.5 to make additives;

[0039] (3) 2-amino-2-methyl-1-propanol, calcium chloride (CaCl 2 ), the additive made of sodium dodecylbenzene sulfonate is added into the zinc oxide slurry at a rate of 0.5% of the total weight of the zinc oxide slurry to prepare a mixture containing 2-amino-2-methyl-1-propanol, chlorine Calcium (CaCl 2 ), zinc oxide slurry for flue gas desulfurization with additives composed of sodium dodecylbenzenesulfonate, and put the zinc oxide slurry containing additives into the slurry circulation pool;

[0040] (4) The zinc smelter contains SO 2 Concentration of 15000 mg / m 3 The flue gas is passed into the booster fan, the flow rate of the fan matches the gas volume, and the wind pressure reaches above 5000Pa;

[0041] (5) Zinc ...

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 a method for desulfurizing zinc oxide slurry containing an additive mixed with alkanolamine, inorganic salt and surfactant, comprising the following steps: first mixing water and zinc oxide to prepare zinc oxide slurry; Alkanolamines, inorganic salts and surfactants are mixed into zinc oxide slurry additives; then the additives are added to the zinc oxide slurry to make zinc oxide slurry containing additives and put into the slurry circulation tank; the gas to be treated containing sulfur dioxide is passed into the increasing Pressurized by the compressor; the pressurized gas enters the bottom of the absorption tower, reacts with the zinc oxide slurry sprayed downward from the top of the absorption tower to absorb sulfur dioxide, and the gas after removing sulfur dioxide is discharged from the top of the absorption tower, and the gas after absorbing sulfur dioxide The zinc oxide slurry is returned to the slurry circulation tank. The method of the invention is simple, low in cost, good in sulfur dioxide absorption effect, low in viscosity of zinc oxide slurry, free of pollution, saves resources and improves economic benefits.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for desulfurizing zinc oxide slurry using an additive mixed with alkanolamine, inorganic salt and surfactant. Background technique [0002] As one of the main gases of air pollution, sulfur dioxide has attracted widespread attention. Flue gas desulfurization is an effective method to reduce sulfur emissions. Countries around the world began to study desulfurization technology in the 1950s. So far, there are more than 200 desulfurization technologies. The main methods are wet desulfurization, semi-dry desulfurization, dry desulfurization, rotary Various desulfurization processes such as spray drying desulfurization and electron beam desulfurization. At present, limestone / lime method, sodium-alkali method, renewable solvent circulation absorption method and ammonia method are commonly used at home and abroad. [0003] However, for lead-zinc s...

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): B01D53/80B01D53/50
Inventor 武乔章林敏
Owner 江苏蓝电环保股份有限公司
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