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A carbon disulfide conversion-absorption type desulfurizer and its preparation method

A technology of carbon disulfide and desulfurization agent, which is applied in the field of desulfurization, can solve the problems of inapplicable treatment, etc., and achieve the effect of wide range of concentration adaptation and good conversion-absorption

Active Publication Date: 2017-10-03
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

[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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  • A carbon disulfide conversion-absorption type desulfurizer and its preparation method
  • A carbon disulfide conversion-absorption type desulfurizer and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Preparation of metatitanic acid:

[0037] In the reactor, weigh 5kg of solid ferrous sulfate, a by-product of titanium dioxide production by sulfuric acid method, add 6L of water to dissolve, heat at 60°C for 30min, 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] In the reactor, weigh 1.67 kg of solid ferrous sulfate, a by-product of titanium dioxide production by sulfuric acid method, add 6 L of water to dissolve, heat at 100° C. for 30 min, 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, K prepared in step (1) 2 CO 3 and pseudo-boehmite were calcined 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 example 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 the present embodiment is:

[0045] (1) Weigh solid FeSO in a beaker 4 ·7H 2 O500g, add 454ml water, dissolve in a 40°C water bath, after complete dissolution, add Na 2 CO 3 190g, the alkali ratio of the two is 1; stir for 2h to carry out the precipitation reaction, filter after the precipitation is completed, and calcine 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 XRD pattern of figure 1 shown.

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

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Abstract

The invention provides a method for preparing a high-concentration carbon disulfide conversion-absorption type desulfurizer at medium temperature. The agent has a good catalytic hydrolysis effect on carbon disulfide, and simultaneously removes the final product hydrogen sulfide generated by hydrolysis. The desulfurizer is composed of: magnetic iron oxide red Fe21.333O32 50~75%, alkali metal oxide K2O 2~8%, anatase TiO25~15%, γ-Al2O35~20%, forming binder 5~10% %. In the range of carbon disulfide in the gas from a trace amount to 3000ppm, the desulfurizer of the present invention has a hydrolysis conversion rate of carbon disulfide greater than 99%, and has a relatively high sulfur capacity, which can be as high as more than 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 Patents(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