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

Desulfurization and denitrification agent with pickling waste residues from steel and iron plants as main materials and removal method

A pickling waste slag, desulfurization and denitrification technology, applied in the fields of electric power, steel, energy, chemical industry and environmental protection, can solve the problems of large equipment, large quantities, high operating costs, etc., achieve simple preparation and removal methods, low cost, and realize boiler The effect of flue gas dust removal

Active Publication Date: 2014-01-29
HEBEI UNIV OF TECH
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Judging from the content of active ingredients in desulfurization and denitrification of pickling waste residue, the mass percentage of active ingredients is about 25% to 30%. Unit removal requires a large amount of pickling waste, which requires larger equipment and higher operating costs

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
  • Desulfurization and denitrification agent with pickling waste residues from steel and iron plants as main materials and removal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0015] A: Desulfurization and denitrification slurry preparation process

[0016] Referring to the attached figure, crush, grind, and sieve the pickling waste residue from a steel factory in Bazhou, Hebei, weigh the mass M1=18kg of the fine powder with a particle size of less than 200 μm, and then weigh the powder with a purity of 95% and a particle size of All less than 100 μm, quality is respectively calcium hydroxide and calcium hypochlorite of M2=M3=6kg, then take by weighing the water that quality is M4=3000kg, pickling waste residue, calcium hydroxide, calcium hypochlorite, Add water into the mixer, stir at normal temperature and pressure for 30 minutes, and then put it into the storage tank for later use.

[0017] B: Desulfurization and denitrification process

[0018] Referring to the attached figure, the fluidized device fo...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a desulfurization and denitrification agent with pickling waste residues from steel and iron plants as main materials and a removal method. The removal method is characterized by mixing 50-80% of pickling waste residue fine powder, 5-30% of calcium hydroxide fine powder and 5-30% of calcium hypochlorite fine powder by mass, then adding water to the mixture according to a mass ratio of 1 / (95-99.5), and stirring the mixture for 10-60 minutes, thus preparing desulfurization and denitrification agent slurry; enabling gases to be removed at 110-140 DEG C to enter a fluidization device with corundum sphere filling height of 1.5-4m from the bottom, wherein the apparent velocity of the gases based on the bed cross section is 0.01-1.0m / s; uniformly spraying the slurry onto the surfaces of the corundum spheres by a spray device arranged 0.5-3m above the charge level of a bed of the fluidization device, wherein the spray density is (1-10)m<3> / (m<2>.h). The desulfurization and denitrification agent and the removal method can be applied to the fields such as steel and iron, power, energy and environmental protection.

Description

technical field [0001] The invention relates to a desulfurization and denitrification agent and a removal method based on iron and steel plant pickling waste slag, in particular to a method for removing sulfides and nitrides in boiler flue gas by using iron and steel plant pickling waste slag The invention relates to an agent and a method, belonging to the fields of iron and steel, electric power, energy, chemical industry and environmental protection. Background technique [0002] SO in boiler flue gas 2 and NO X It is the main component of air pollutants. The "Comprehensive Emission Standards of Air Pollutants" (GB16297-1996), "Emission Standards of Air Pollutants for Boilers" (GB13271-2001), "Emission Standards of Air Pollutants for Industrial Furnaces" promulgated and implemented in my country "(GB9078-1996), "Emission Standard of Air Pollutants for Thermal Power Plants" (GB13223-2003) and other series of standards and regulations, all have clear limits on its content. ...

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
IPC IPC(8): B01D53/80B01D53/60B09B3/00
Inventor 张少峰王德武刘燕王乾宇马倩刘海龙
Owner HEBEI UNIV OF 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