Unlock instant, AI-driven research and patent intelligence for your innovation.

Manganiferous sorbent composition and preparation method thereof

A composition and adsorbent technology, applied in the field of manganese-containing adsorbent compositions and their preparation, can solve problems such as unsatisfactory results, destruction of ecological environment and human health, and achieve good regeneration stability, excellent adsorption performance, high The effect of denitrification performance

Inactive Publication Date: 2010-09-08
BEIJING UNIV OF CHEM TECH +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These harmful gases cause serious damage to the ecological environment and human health
[0003] At present, the control of NOx emissions in the world, although a series of studies have been carried out at home and abroad, but the results are still not satisfactory.

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

preparation example Construction

[0031] When the sorbent composition also contains any other components that do not affect or can improve the performance of the composition provided by the present invention, for example, containing components selected from Groups IB, IIB, IIIB, VIB, and VIII, it is further preferred Wherein Cr, Co, Cu, Fe, Ni, Zn, Ce, La, Pt one or more components, the preparation method also includes the step of introducing these components.

[0032] According to the composition provided by the present invention, the regeneration method after adsorption saturation is thermal regeneration in air, the regeneration pressure is normal pressure, and the regeneration temperature is 300-600°C, preferably 400-600°C.

[0033] The composition provided by the invention is directly used as an adsorbent in the process of removing NOx in flue gas by adopting an adsorption method. Therefore, it is suitable for catalytic cracking flue gas treatment, coal-fired power plant flue gas treatment, steel plant flu...

Embodiment 1

[0042] Raw material: γ-Al 2 o 3 Carrier, spherical, average particle diameter 1.3 millimeters, product of Changling Catalyst Factory; Ba(NO 3 ) 2 , La(NO 3 ) 3 、Na 2 SO 4 , 50% by weight of Mn(NO 3 ) 2 Solution (both products of Beijing Chemical Plant).

[0043] Preparation method: 25 grams of Ba(NO 3 ) 2 Dissolve 1 liter of solution L1 with deionized water, and dissolve 100 g of La(NO 3 ) 3 Dissolve 1 liter of solution L2 with deionized water, and 33 g of Na 2 SO 4 542 g of Mn(NO 3 ) 2 The solution was dissolved in deionized water to make 1 liter of solution L4. Sequentially impregnate 1000 g spherical γ-Al with L1, L2, L3, L4 2 o 3 Carrier for 2 hours, dried at 110°C for 12 hours after each impregnation, and calcined at 550°C for 10 hours to obtain the composition La-Mn-Ba-Na-γ-Al of the present invention 2 o 3 .

[0044] Composition: The content of BaO is 1% by weight, Na 2 SO 4 The content is 3%, MnO 2 The content is 13% by weight, La 2 o 3 The co...

Embodiment 2

[0046] Raw material: γ-Al 2 o 3 Carrier, spherical, with an average particle size of 1.3 mm, the product of Changling Catalyst Factory; Mn(NO 3 ) 2 (for 50% by weight solution), K 2 CO 3 、K 2 SO 4 All are products of Beijing Chemical Plant.

[0047] 40 g K 2 CO 3 Dissolve 31 g of K in 1 liter of solution L1 with deionized water 2 SO 4 Dissolve in deionized water to make 1 liter of solution L2. 535 g Mn(NO 3 ) 2 The solution was dissolved in deionized water to make 1 liter of solution L3. Sequentially impregnate 1000 grams of γ-Al with L1, L2, L3 2 o 3 Carrier for 2 hours, dried at 110°C for 12 hours after each impregnation and calcined at 600°C for 8 hours to obtain the composition K-Mn-Al of the present invention 2 o 3 .

[0048] Composition K-Mn-Al 2 o 3 Medium K 2 CO 3 The content is 4% by weight, K 2 SO 4 The content is 3 wt MnO 2 The content is 13% by weight.

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
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a manganiferous sorbent composition and a preparation method thereof and belongs to the technical field of sorbents. The composition comprises a spherical heat-resistant alumina substrate, a manganese metal component and a carbonate and a sulphate of at least one metal component of group IA and / or IIA; based on the weight of the composition, the content of the spherical heat-resistant alumina substrate is between 50 and 99 weight percent; based on the weight of oxides, the content of the manganese metal component is between 0.5 and 35 weight percent; and the content of the metal component of the group IA and / or IIA is between 0.5 and 35 weight percent. Compared with the prior art, the composition provided by the invention has high performance in removing nitric oxides from smoke gas.

Description

technical field [0001] The invention belongs to the technical field of adsorbents, in particular to a manganese-containing adsorbent composition and a preparation method thereof. Background technique [0002] The pollution problem of sulfur oxides nitrogen oxides NOx (more than 90% is NO) in the atmosphere is becoming more and more serious, and the flue gas produced by fuel combustion and metal smelting is the main source of NOx. These harmful gases cause serious damage to the ecological environment and human health. [0003] At present, a series of studies have been carried out at home and abroad on NOx emission control in the world, but the results are still unsatisfactory. [0004] US6521559 discloses a columnar clay catalyst suitable for utilizing NH 3 Selective Catalytic Reduction (SCR) for reducing NO. The characteristics of this catalyst are mainly the introduction of metal oxides such as V in the middle of the clay layer 2 o 5 , CuO, Fe 2 o 3 , Cr 2 o 3 , Fe...

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): B01J20/08B01J20/30
Inventor 杜冰张慧段雪唐阿康
Owner BEIJING UNIV OF CHEM TECH