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

Magnesium oxide base calalytic-absorber for denitrogen of smoke and its preparation method

A magnesia-based, adsorbent technology, applied in the field of environmental protection

Inactive Publication Date: 2007-07-18
NORTHEASTERN UNIV
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] Aiming at the problems existing in the current technology for treating nitrogen oxides in industrial flue gas, the present invention provides a magnesium oxide-based catalytic-adsorbent for denitrification of coal-fired flue gas and its preparation method

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
  • Magnesium oxide base calalytic-absorber for denitrogen of smoke and its preparation method
  • Magnesium oxide base calalytic-absorber for denitrogen of smoke and its preparation method
  • Magnesium oxide base calalytic-absorber for denitrogen of smoke and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] Orthogonal experiments were designed as follows.

[0115] Table 1 Factors and horizontal orthogonal design table

[0116] factor

MgO(%)

Sweetener powder (%)

MgSO 4 (%)

Level

Level

Level

67(1)

80(2)

90(3)

0.5(1)

0.75(2)

1(3)

33(1)

20(2)

10(3)

[0117] According to the table above, the oxidation-based catalyst-adsorbent orthogonal design and experimental results are shown in Table 2.

[0118] Table 2 Raw material ratio orthogonal design scheme and experimental results

[0119] column

1

2

3

factor

MgO

sweet powder

MgSO 4

Experimental results

NO removal rate

Experiment 1

Experiment 2

Experiment 3

Experiment 4

Experiment 5

Experiment 6

1

1

1

2

2

2

1

2

3

1

2...

Embodiment 2

[0125] Catalyst is prepared according to the following process steps:

[0126] (1) Crushing

[0127] Grind the light-burned magnesium product and sieve it to -200 mesh; because magnesium oxide is placed in the air, it is easy to absorb moisture in the air, and in addition, the generated magnesium hydroxide may also react with carbon dioxide in the air to form magnesium carbonate and agglomerate, so The agglomerated industrial magnesia should be ground into powder and baked in a muffle furnace at 650°C for 3 hours to remove moisture and some carbonates.

[0128] (2) dissolve

[0129] Add the pulverized light-burned magnesia to MgSO that has been dissolved in water at 40°C 4 and sweet powder additive mixture, mix evenly, and stir with water to adjust to a moldable soft state. The material ratio is calculated according to the weight percentage: 60% of light-burned magnesium oxide, MgSO 4 30%, sweet powder 2%, water 8%.

[0130] (3) Molding

[0131] Use extruding machine to ...

Embodiment 3

[0145] Catalyst is prepared according to the following process steps:

[0146] (1) Crushing

[0147] Grind the light-burned magnesium product and sieve it to -200 mesh; because magnesium oxide is placed in the air, it is easy to absorb moisture in the air, and in addition, the generated magnesium hydroxide may also react with carbon dioxide in the air to form magnesium carbonate and agglomerate, so The agglomerated industrial magnesia should be ground into powder and baked in a muffle furnace at 650°C for 3 hours to remove moisture and some carbonates.

[0148] (2) dissolve

[0149] Add the pulverized light-burned magnesia to MgSO that has been dissolved uniformly at 50°C with water as the solvent 4 and sweet powder additive mixture, mix evenly, and stir with water to adjust to a moldable soft state. The material ratio is calculated according to weight percentage: 80% of light-burned magnesium oxide, MgSO 4 10%, sweet powder 3%, water 7%.

[0150] (3) Molding

[0151] Ca...

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
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

A magnesium oxide-based catalyst-adsorbent for denitrifying the fume is prepared from light-burnt magnesium oxide (MgO) (67-90 mass%), MgSO4 (10-33) and saccharin powder as adhesive through wet mixing, pulverizing, dissolving, shaping, drying, granulating and calcining.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to the treatment technology of coal-fired flue gas, in particular to a magnesium oxide-based catalyst-adsorbent for flue gas denitrification and a method thereof. Background technique [0002] With the continuous deepening of the understanding of the sustainable development strategy, the problems of environmental pollution and prevention have attracted great attention from all over the world. Among them, the pollution of acid rain and the harm it causes have become one of the global environmental problems concerned by countries all over the world. The main sources of acid gases in the atmosphere are harmful gases in exhaust gas from combustion, thermal power generation, iron and steel smelting, non-ferrous metal smelting, cement and related chemical plants: nitrogen oxides, sulfur oxides, carbon oxides, etc. It reacts with moisture in the atmosphere through photochemi...

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): B01J27/053B01J23/02B01J20/04B01D53/54B01D53/86
Inventor 胡筱敏高宇李蕴刘鹏杰
Owner NORTHEASTERN UNIV
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