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Compound type desulfurization grout and preparation method thereof

A desulfurization slurry and matching technology, applied in the field of desulfurization, can solve the problems of high desulfurization cost and low saturated sulfur capacity, and achieve the effects of high desulfurization efficiency, high sulfur capacity and improved desulfurization efficiency

Active Publication Date: 2015-06-03
福建三聚福大化肥催化剂国家工程研究中心有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned complex iron desulfurizer has improved its absorption rate of sulfide and sulfur recovery efficiency by adopting a supergravity device, and has a high desulfurization efficiency at the same time. Removal of H by wet method 2 When S, a large amount of complexing liquid needs to be recycled, and the cost of desulfurization is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The composite desulfurization slurry described in this embodiment is mainly prepared from the following raw materials:

[0032] FeCl 3 ·6H 2 O, 6g;

[0033] Triethanolamine, 9g;

[0034] Ammonium bicarbonate, 1.5g;

[0035] Polyethylene glycol dimethyl ether, 0.03g;

[0036] MF-1 fungicide, 0.03g;

[0037] p-toluenesulfonic acid, 0.3g

[0038]Amorphous iron oxyhydroxide, 15g;

[0039] Further, a method for preparing the compound desulfurization slurry is provided, which includes the following steps:

[0040] (1) Weigh the above-mentioned soluble iron salt, iron salt complexing agent, sulfur precipitant, biological inhibitor, and solution stabilizer in sequence and add them to 240 g of deionized water, mix well to obtain a slurry, and then use the Said basic substance adjusts the pH of said slurry to be 7.5, and reacts for 12h under stirring condition, and makes complexed iron solution;

[0041] (2) Weighing the iron oxyhydroxide with the above weight and adding...

Embodiment 2

[0043] The composite desulfurization slurry described in this embodiment is mainly prepared from the following raw materials:

[0044] FeSO 4 ·7H 2 O, 8g;

[0045] Disodium EDTA, 10g;

[0046] Sodium carbonate, 2g;

[0047] Polyethylene glycol, 0.2g;

[0048] Lauryl dimethyl benzyl ammonium chloride, 0.2g;

[0049] Sorbitol, 1g;

[0050] A mixture of amorphous iron oxyhydroxide and γ-FeOOH at a mass ratio of 1:1, 14g;

[0051] Further, a method for preparing the compound desulfurization slurry is provided, which includes the following steps:

[0052] (1) Weigh the above-mentioned soluble iron salt, iron salt complexing agent, sulfur precipitant, biological inhibitor, and solution stabilizer in sequence and add them to 180 g of deionized water, mix well to obtain a slurry, and then use the The pH of the slurry is adjusted by the alkaline substance to be 8, and the reaction is carried out for 13 hours under agitation to obtain a complex iron solution;

[0053] (2) Weigh...

Embodiment 3

[0055] The composite desulfurization slurry described in this embodiment is mainly prepared from the following raw materials:

[0056] Fe(NO 3 ) 3 9H 2 O, 12g;

[0057] Sodium gluconate, 12g;

[0058] Sodium bicarbonate, 2.4g;

[0059] A mixture of polyethylene glycol dimethyl ether and polyethylene glycol with a mass ratio of 1:1, 0.1 g;

[0060] 3-dodecyloxy-2-hydroxypropyltrimethylammonium chloride, 0.1g;

[0061] Sorbitol, 0.3g;

[0062] δ-FeOOH, 18g;

[0063] Further, a method for preparing the compound desulfurization slurry is provided, which includes the following steps:

[0064] (1) Weigh the above-mentioned soluble iron salt, iron salt complexing agent, sulfur sedimentation agent, biological inhibitor, solution stabilizer in sequence and add them to 300g of deionized water, mix well to obtain a slurry, and then use the The pH of the slurry adjusted by the basic substance is 9, and the reaction is carried out for 12 hours under stirring conditions to obtain a...

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Abstract

The invention relates to compound type desulfurization grout. According to the compound type desulfurization grout, ferric oxyhydroxide is added into a complex iron desulfurization solution, so that the desulfurization is carried out by virtue of a synergistic effect of the ferric oxyhydroxide and the complex iron desulfurization solution; compared with the prior art, the problem that the desulfurization cost is relatively high because the large amount of complexing solution is circularly used when a ferric complex singly taken as a desulfurization agent with the relatively low saturated sulfur capacity is used for removing H2S by virtue of a wet method is solved; the complex iron desulfurization solution is effectively mixed with the ferric oxyhydroxide, so that the characteristics of high desulfurization speed and desulfurization efficiency of the complex iron desulfurization solution are combined with the high-sulfur-capacity characteristic of the ferric oxyhydroxide, so that the relatively high desulphurization efficiency and the relatively high sulfur capacity are maintained, and the high-speed, high-efficiency and high-precision desulphurization is realized.

Description

technical field [0001] The invention relates to a composite desulfurization slurry and a preparation method thereof, belonging to the technical field of desulfurization. Background technique [0002] The chemical raw materials produced from coal, coke, natural gas and petroleum all contain different concentrations of H 2 S gas. In addition, due to the fact that there is a lot of coal, little oil, and insufficient natural gas in most parts of our country, the raw materials for the synthesis of many bulk chemicals such as ammonia, methanol, and hydrogen have turned to low-quality, high-sulfur bituminous coal, lignite, and heavy oil. , residual oil and asphalt, etc. However, the raw material gas produced after the gasification of the above-mentioned inferior raw materials not only contains high concentrations of CO, but also contains relatively high concentrations of CO 2 and H 2 S, where high concentration H 2 The existence of S not only pollutes the environment, corrodes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/52
Inventor 江莉龙曹彦宁林科魏可镁曾杰凯王宁生
Owner 福建三聚福大化肥催化剂国家工程研究中心有限公司
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