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Adsorbent combination containing metal component of group VIB

A metal component and composition technology, which is applied in the field of adsorbent compositions containing VIB group metal components, can solve the problems of ecological environment damage to human health, unsatisfactory results, etc., and achieves the effect of good regeneration stability

Active Publication Date: 2013-06-05
CHINA PETROLEUM & CHEM CORP +1
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  • 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 SOx emission control technology in the world is relatively mature. Although a series of researches have been carried out at home and abroad on the NOx emission control, the results are still not satisfactory.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] When the adsorbent composition also contains any other components that do not affect or can improve the performance of the composition provided by the invention, for example, containing components selected from IB, II B, III B, IVB, V B, VIII , when one or more components of Co, Cu, Fe, Ni, Zn, Ce, La, Pt are further preferred, the preparation method also includes the step of introducing these components.

[0027] Wherein, there is no particular limitation on the introduction method of the other components, and it can be introduced in step (1) and into the heat-resistant inorganic oxide matrix and / or the precursor of the heat-resistant inorganic oxide matrix. The simultaneous introduction of group B metal components and / or at least one metal component selected from groups IA, II A can also be introduced separately. For example, it may be after combining the heat-resistant inorganic oxide matrix and / or the precursor of the heat-resistant inorganic oxide matrix with the com...

Embodiment 1

[0041] Raw materials: silica carrier, spherical, with an average particle size of 1.22 mm, product of Changling Catalyst Factory; Mg(NO 3 ) 2 , Cr(NO 3 ) 3 , La(NO 3 ) 3 All are products of Beijing Chemical Plant.

[0042] Preparation method: 263 grams of Cr(NO 3 ) 3 Dissolve 1 liter of solution L1 with deionized water, and dissolve 123 grams of La(NO 3 ) 3 Dissolve 592 g of Mg(NO 3 ) 2 The solution was dissolved in deionized water to make 1 liter of solution L3. Sequentially impregnate 1000 g of SiO with L1, L2, L3 2 Carrier for 2 hours, dried at 110°C for 12 hours after each impregnation, and calcined at 950°C for 10 hours to obtain the composition La-Mg-Cr-SiO of the present invention 2 .

[0043] Composition: MgO, Cr 2 o 3 and La 2 o 3 In total, the magnesium content is 16% by weight, the chromium content is 5% by weight, and the lanthanum content is 4% by weight.

[0044] Among them, chromium is represented by Cr 6+ and Cr 3+ Occurs, in elements, Cr 3...

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; Cr(NO 3 ) 3 、K 2 CO 3 All are products of Beijing Chemical Plant.

[0047] Preparation method: the same method as in Example 1 to prepare the composition K-Cr-γ-Al by step-by-step impregnation 2 o 3 . After each step of impregnation, dry at 110°C for 12 hours and bake at 900°C for 8 hours.

[0048] Composition: in K 2 CO 3 、Cr 2 o 3 Gauge, K-Cr-γ-Al 2 o 3 The potassium content is 4% by weight, and the chromium content is 17% by weight.

[0049] Among them, chromium is represented by Cr 6+ and Cr 3+ Occurs, in elements, Cr 3+ The content is 91%, Cr 6+ The content is 9%.

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PUM

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Abstract

The invention relates to an adsorbent combination containing a metal component of group VIB. The combination comprises a heat resistant inorganic oxide substrate, at least one metal component of the group VIB and at least one metal component of the group IA and / or IIA, wherein the heat resistant inorganic oxide substrate accounts for 50-99 wt% based on the combination; and measured by oxides, themetal component of the group VIB accounts for 0.5-35 wt%, and the metal component of the group IA and / or IIA accounts for 0.5-35 wt%. Compared with the prior art, the combination maintains high performance for removing oxides and nitrogen oxides from sulfur, and achieves high regeneration stability meanwhile.

Description

technical field [0001] The present invention relates to an adsorbent, in particular to an adsorbent composition containing VIB group metal components. Background technique [0002] Atmospheric sulfur oxide SOx (more than 95% is SO 2 ), nitrogen oxides NOx (more than 90% are NO) pollution problems are becoming more and more serious, and the flue gas produced by fuel combustion, metal smelting, etc. is the main source of SOx and NOx. These harmful gases cause serious damage to the ecological environment and human health. [0003] At present, the SOx emission control technology in the world is relatively mature. Although a series of researches have been carried out at home and abroad on the NOx emission control, the results are still not satisfactory. [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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/24B01J23/85B01D53/86B01D53/94B01D53/60
CPCY02A50/20
Inventor 杜冰宗保宁罗一斌王维家
Owner CHINA PETROLEUM & CHEM CORP