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Desulfurizer and application thereof

A desulfurization agent and desulfurization device technology, applied in the direction of magnesium sulfate, dispersed particle separation, chemical instruments and methods, etc., can solve problems such as unsuitable for sulfur dioxide removal, and achieve the effect of stable operation

Active Publication Date: 2012-10-31
中晶新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this desulfurizer can be used for the removal of mercaptans in liquid hydrocarbons such as LPG, solvent oil, and naphtha, and is not suitable for the removal of sulfur dioxide.
At the same time, the desulfurizer cannot recover the magnesium sulfate with high purity formed by desulfurization by-products.
[0006] In summary, there is currently no desulfurizer that can improve the quality of magnesium sulfate in the process of flue gas desulfurization by the magnesium oxide method.

Method used

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  • Desulfurizer and application thereof
  • Desulfurizer and application thereof
  • Desulfurizer and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (8) Preparation of desulfurizer:

[0064] Mix the components uniformly according to the following formula to obtain the desulfurizer.

[0065]

[0066] (2) the technology that utilizes desulfurization waste liquid to produce magnesium sulfate

[0067] 1. Pulping:

[0068] The prepared desulfurizer powder is added with water to make slurry, and after aging, a slurry containing magnesium hydroxide as the main component (referred to as magnesium hydroxide-containing slurry) is formed, and is kept in the slurry tank for use.

[0069] 2. Desulfurization and oxidation:

[0070] The sulfur dioxide in the flue gas reacts with the slurry containing magnesium hydroxide in the desulfurization tower to remove the SO in the flue gas 2 .

[0071] In the desulfurization tower, the slurry containing magnesium hydroxide contains strong oxidant MnO 2 , so that the desulfurization slurry in the tower will generate a solution of 95wt% magnesium sulfate and 5wt% magnesium sulfite wh...

Embodiment 2

[0083] In addition to adding 5 parts by weight of KMO to the desulfurizer 4 , except that the desulfurization slurry is generated into a solution of 97wt% magnesium sulfate and 3wt% magnesium sulfite (the percentages are based on the sum of the weight percentages of magnesium sulfate and magnesium sulfite being 100wt%), other conditions are the same as in Example 1 . The properties of the obtained products are shown in Table 2, and the experimental data are shown in Table 3.

Embodiment 3

[0085] In addition to changing the weight part of magnesium oxide to 80 weight parts in the desulfurizing agent, the desulfurization slurry was formed into a solution of 90 wt% magnesium sulfate and 10 wt% magnesium sulfite (the percentages are based on the weight percentages of magnesium sulfate and magnesium sulfite) Except that the sum is 100 wt %), other conditions are the same as those in Example 1. The properties of the obtained products are shown in Table 2, and the experimental data are shown in Table 3.

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PUM

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Abstract

The invention discloses a desulfurizer and application thereof. The desulfurizer comprises, by weight, 70-90 parts of MgO, 0.5-4 parts of CaO, 2-10 parts of SiO2, 0.15-0.6 part of Fe2O3, 0.15-0.6 part of Al2O3, 5-10 parts of MnO2, and 5-20 parts of CuO, wherein the MgO comprises 50-75% by weight of active magnesium oxide. By means of the desulfurizer, byproducts with high valve are synchronously generated in a flue gas desulfurization process through a magnesium oxidizing method. In addition, by means of the desulfurizer, the quality of magnesium sulfate monohydrate generated after desulfurization reaches the standard.

Description

technical field [0001] The present invention relates to a kind of desulfurizing agent and its application, especially the purposes of desulfurizing agent in producing magnesium sulfate monohydrate. Background technique [0002] Since 2005, in the flue gas sulfur process, magnesium oxide desulfurization technology has been widely recognized by steel and power generation enterprises, which is inseparable from the advantages of magnesium oxide desulfurization technology. It is generally believed that magnesium oxide method has high desulfurization efficiency ( up to more than 90%), low initial investment, low operation and maintenance costs, etc. The magnesium oxide desulfurization device used in China in recent years generally adopts a double decomposition process to recover magnesium compounds and sulfur (eg CN1775681A). However, this process obviously inherits some of the shortcomings of the calcium oxide desulfurization device, such as a large amount of magnesium oxide con...

Claims

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Application Information

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IPC IPC(8): B01D53/80B01D53/50C01F5/40
Inventor 童裳慧
Owner 中晶新材料有限公司
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