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Compounded desulfurization slurry containing complexing agent and preparation method of compounded desulfurization slurry

The technology of desulfurization slurry and complexing agent is applied in the field of desulfurization, which can solve the problems of blocking resistance of desulfurization tower, affecting normal operation, affecting desulfurization efficiency, etc., and achieves the effects of high sulfur capacity, low desulfurization cost, and improved desulfurization efficiency.

Active Publication Date: 2014-07-16
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

However, due to the low saturated sulfur capacity of the phthalocyanine cobalt sulfonate desulfurization solution, in order to maintain a certain desulfurization efficiency, a large amount of alkali solution needs to be used during continuous operation of the process, and the cost of desulfurization is high. High, as the reaction proceeds, crystals will precipitate, which will easily cause the blockage of the desulfurization tower, increase the resistance, and even affect the normal operation. In addition, the sulfur particles produced in the above desulfurization process are small and difficult to separate, which may easily cause excessive sulfur content in the desulfurization liquid. High, affecting desulfurization efficiency

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] The complex desulfurization slurry containing complexing agent described in this embodiment is mainly prepared from the following raw materials:

[0029] Disodium edetate, 3 parts by weight;

[0030] Amorphous iron oxyhydroxide, 2 parts by weight;

[0031] Sodium dinuclear phthalocyanine cobalt sulfonate, 0.005 parts by weight;

[0032] Ammonium bicarbonate, 1 part by weight;

[0033] Polyethylene glycol dimethyl ether, 0.01 parts by weight;

[0034] p-toluenesulfonic acid, 0.1 parts by weight.

[0035] Further, this embodiment also provides a method for preparing the complex desulfurization slurry containing complexing agent, which includes the following steps:

[0036] (1) Take the above-mentioned basic substance ammonium bicarbonate and dinuclear cobalt phthalocyanine sulfonate in turn and add them to 80 parts by weight of deionized water, mix well to obtain sodium phthalocyanine cobalt sulfonate desulfurization solution;

[0037] (2) said amorphous iron oxyhydr...

Embodiment 2

[0039] The complex desulfurization slurry containing complexing agent described in this embodiment is mainly prepared from the following raw materials:

[0040] Citric acid, 4 parts by weight;

[0041] Amorphous iron oxyhydroxide, 3 parts by weight;

[0042] Mononuclear ammonium phthalocyanine cobalt sulfonate, 0.008 parts by weight;

[0043] Sodium carbonate, 1.5 parts by weight;

[0044] Polyethylene glycol, 0.03 parts by weight;

[0045] Sorbitol, 0.3 parts by weight.

[0046] Further, this embodiment also provides a method for preparing the complex desulfurization slurry containing complexing agent, which includes the following steps:

[0047] (1) Take by weighing the alkaline substance sodium carbonate and mononuclear cobalt phthalocyanine sulfonate ammonium sulfonate in turn and add them to 100 parts by weight of deionized water, mix well to obtain ammonium phthalocyanine cobalt sulfonate desulfurization liquid;

[0048] (2) The amorphous ferric oxyhydroxide, iron s...

Embodiment 3

[0050] The complex desulfurization slurry containing complexing agent described in this embodiment is mainly prepared from the following raw materials:

[0051] Sodium pyrophosphate, 3 parts by weight;

[0052] Amorphous iron oxyhydroxide, 3 parts by weight;

[0053] Trinuclear sodium phthalocyanine cobalt sulfonate, 0.005 parts by weight;

[0054] Ammonia, 1.5 parts by weight.

[0055] Further, the preparation method of the complex desulfurization slurry containing complexing agent is provided, which includes the following steps:

[0056] (1) Take the alkaline substance ammonia water and trinuclear cobalt phthalocyanine sulfonate sodium of the above weight in turn and add them to 85 parts by weight of deionized water, mix well to obtain sodium phthalocyanine cobalt sulfonate desulfurization liquid;

[0057] (2) Weigh the amorphous ferric oxyhydroxide and iron salt complexing agent sodium pyrophosphate of the above weight and add them to the desulfurization solution of sodium...

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Abstract

The invention relates to compounded desulfurization slurry containing a complexing agent and a preparation method of the compounded desulfurization slurry. According to the preparation method, a ferric salt complexing agent and hydroxyl ferric oxide are added into a dicaryon cobalt phthalocyanine sulfonate solution to carry out desulfurization under a combined action of the ferric salt complexing agent, the hydroxyl ferric oxide and the dicaryon cobalt phthalocyanine sulfonate solution, so that the characteristics of high desulfurization velocity and efficiency of a cobalt phthalocyanine sulfonate desulfurization solution are effectively combined with a high sulfur capacity property of the hydroxyl ferric oxide; the compounded desulfurization slurry simultaneously has high desulfurization efficiency and sulfur capacity, so that the high-speed, high-efficiency and high-precision desulfurization can be effectively realized, and the desulfurization cost is low.

Description

technical field [0001] The invention relates to a composite type desulfurization slurry containing complexing agent 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 p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/52
Inventor 江莉龙曹彦宁曾杰凯林科魏可镁
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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