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High-concentration carbonyl sulfide conversion-absorption type desulfurizer and preparation method thereof

A carbonyl sulfide, high-concentration technology, applied in the field of desulfurization, can solve the problems of inapplicability and low treatment concentration, and achieve the effect of a wide range of concentration adaptation

Active Publication Date: 2017-11-03
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned carbonyl sulfide conversion desulfurizer can achieve a high conversion rate at room temperature, it still has the disadvantage that its applicable treatment concentration is low, not higher than 30mgS / m 3 , not suitable for the treatment of high-concentration carbonyl sulfide occasions, and how to find a desulfurizer that can realize high-efficiency conversion and absorption of carbonyl sulfide under high-concentration conditions is an unsolved problem in the prior art

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  • High-concentration carbonyl sulfide conversion-absorption type desulfurizer and preparation method thereof
  • High-concentration carbonyl sulfide conversion-absorption type desulfurizer and preparation method thereof
  • High-concentration carbonyl sulfide conversion-absorption type desulfurizer and preparation method thereof

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Effect test

Embodiment 1

[0032] Preparation of metatitanic acid:

[0033] Weigh 5 kg of solid ferrous sulfate, a by-product of sulfuric acid production of titanium dioxide, in the reactor, add 6 L of water to dissolve, heat at 60 ° C for 30 min, add acid to adjust the pH value to 1, add flocculant polyacrylamide and filter while hot to obtain partial Titanic acid solid A, the metatitanic acid A was dried at 110° C. for 1 h.

[0034]Weigh 1.67 kg of solid ferrous sulfate, a by-product of sulfuric acid production of titanium dioxide, in the reactor, add 6 L of water to dissolve, heat at 100°C for 30 minutes, add acid to adjust the pH value to 2, add flocculant polyacrylamide and filter while hot to obtain Metatitanic acid solid B, the metatitanic acid B was dried at 110° C. for 1 h.

Embodiment 2

[0036] Anatase TiO 2 and K 2 Preparation of O:

[0037] The metatitanic acid A and K prepared in step (1) 2 CO 3 Calcined at 500°C respectively to prepare anatase TiO 2 and K 2 O.

Embodiment 3

[0039] The desulfurizer described in this embodiment contains the following components: magnetic iron oxide red Fe 21.333 o 32 , 50 parts by weight; anatase TiO 2 , 5 parts by weight; K 2 O, 5 parts by weight; bentonite, 5 parts by weight.

[0040] The preparation method of the desulfurizer of catalytic conversion-absorption type carbonyl sulfide described in this embodiment is:

[0041] (1) Weigh solid FeSO in a beaker 4 ·7H 2 O500g, add 454ml water, put in 40 ℃ water bath and dissolve, after completely dissolving, add Na 2 CO 3 190g, the alkali ratio of the two is 1; stir for 2h for precipitation reaction, filter after the precipitation is completed, and roast the filter cake at 350°C for 3h to obtain magnetic iron oxide red Fe 21.333 o 32 .

[0042] (2) 50 parts by weight of the magnetic iron oxide red Fe 21.333 o 32 , 5 parts by weight anatase TiO 2 , 5 parts by weight K 2 O mixed with 5 parts by weight of bentonite, often warm rolling ball molding, made The...

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Abstract

The invention provides a high-concentration carbonyl sulfide conversion-absorption type desulfurizer, which is composed of magnetic iron oxide red Fe21.333O32, anatase TiO2, alkali metal oxide K2O and a binding agent. The desulfurizer in the present invention can be It converts and absorbs carbonyl sulfide in the gas at medium temperature. The concentration range is wide, and it can realize the precise removal of carbonyl sulfide under high concentration conditions. The desulfurizer has a high sulfur capacity when used under medium and low temperature conditions. In the present invention, the suitable content of the anatase TiO2, alkali metal oxide K2O and magnetic iron oxide red Fe21.333O32 is combined, so that the desulfurizer has a very optimized alkaline active center, even in the presence of high concentrations of carbonyl sulfide Very good conversion-absorption effects can also be achieved under certain conditions.

Description

technical field [0001] The invention relates to a carbonyl sulfide catalytic conversion-absorption type desulfurizer in gas and a preparation method thereof, belonging to the technical field of desulfurization. Background technique [0002] As we all know, organic sulfur, especially carbonyl sulfide, widely exists in the raw material gas of chemical production with coal, natural gas and petroleum as raw materials, and its existence will cause catalyst poisoning and deactivation in the subsequent production process. As low-quality coal and coke oven gas are used in the production of synthesis gas, the removal of high-concentration carbonyl sulfide is highly valued, so the preparation of high-efficiency carbonyl sulfide desulfurizers just meets this demand. [0003] Carbonyl sulfide is neutral or weakly acidic, and its chemical properties are relatively stable. It is difficult to remove it by conventional desulfurization methods. There are two industrial methods for removing c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/86B01D53/48
Inventor 李丽英宋雯雯毛文君张志民刘博书刘振义
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD