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Carbon disulfide conversion-adsorption type desulfurizing agent and preparation method thereof

A carbon disulfide and desulfurizer technology, applied in the field of desulfurization, can solve problems such as inappropriate treatment, and achieve the effect of wide range of concentration adaptation and good conversion-absorption

Active Publication Date: 2015-07-01
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

[0007] Although the above catalysts can achieve CS under certain conditions 2 High-efficiency treatment, but its applicable treatment concentration is only 200-500mgS / m 3 , not suitable for high concentration CS 2 occasions, but how to explore a way to achieve CS under high concentration conditions 2 High-efficiency conversion and absorption of desulfurizers is an unsolved problem in the prior art

Method used

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  • Carbon disulfide conversion-adsorption type desulfurizing agent and preparation method thereof
  • Carbon disulfide conversion-adsorption type desulfurizing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of metatitanic acid:

[0037] 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 minutes, 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.

[0038] Weigh 1.67kg of solid ferrous sulfate, a by-product of sulfuric acid production of titanium dioxide, in the reactor, add 6L of water to dissolve, heat at 100°C for 30min, 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

[0040] Anatase TiO 2 、K 2 O and γ-Al 2 o 3 Preparation of:

[0041] The metatitanic acid A and K prepared in step (1) 2 CO 3 and pseudo-boehmite were roasted at 500 °C to prepare anatase TiO 2 、K 2 O and γ-Al 2 o 3 .

Embodiment 3

[0043] 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, 2 parts by weight; γ-Al 2 o 3 , 5 parts by weight; bentonite, 5 parts by weight.

[0044] The preparation method of the desulfurizer of catalytic conversion-absorption type carbon disulfide described in this embodiment is:

[0045] (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 . The prepared magnetic iron oxide red Fe 21.333 o 32 The XRD pattern such as figure 1 shown.

[0046] (2) 50 parts by weight of the magnetic iron oxide red Fe 21.333 o 32 , 5 parts by weigh...

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Abstract

The invention provides a preparation method of a high-concentration carbon disulfide conversion-adsorption type desulfurizing agent at intermediate temperature. The agent has a very good catalytic hydrolysis effect on carbon disulfide, and removes the final product hydrogen sulfide generated by hydrolysis simultaneously. The desulfurizing agent comprises the following components: 50-75% of magnetic iron oxide red Fe21.333O32, 2-8% of alkali metal oxide K2O, 5-15% of anatase type TiO2, 5-20% of gamma-Al2O3 and 5-10% of a forming binder. Carbon dioxide in gas is within the range of trace amount to 3000ppm. The desulfurizing agent has the hydrolysis conversion rate to carbon disulfide greater than 99%, and has relatively high sulfur capacity being 20% or above 20%.

Description

technical field [0001] The invention relates to a carbon disulfide 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 widely exists in the raw material gas of chemical production, which uses coal, natural gas and petroleum as raw materials, and its existence will cause catalyst poisoning and deactivation in the subsequent production process. With the use of low-quality coal and coke oven gas in the preparation of synthetic raw material gas, as well as the research, development and use of new technologies or new processes such as coal-to-gas polygeneration and low-temperature steam shift, the removal of high-concentration organic sulfur has been highly valued. . Organic sulfur usually includes carbonyl sulfide (COS) and carbon disulfide (CS 2 ) etc., wherein in the chemical raw material gas, CS 2 The content is about 10% ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/48
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