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Efficient desulfurization and denitration absorbing agent and preparation method thereof

A technology for desulfurization and denitrification and absorbent, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve the problems of complex preparation process of desulfurization and denitrification absorbent, low desulfurization and denitrification efficiency, and high process consumption, so as to ensure desulfurization and denitrification Efficiency, uniform shape, mature and simple process

Inactive Publication Date: 2018-10-16
DSP TECH DEV WENZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the existing deficiencies and provide a high-efficiency desulfurization and denitrification absorbent and its preparation method, which can improve the problems of high energy consumption, high cost, low desulfurization and denitrification efficiency and desulfurization and denitrification process in the current flue gas desulfurization and denitrification process. Absorbent preparation process is complicated and the process consumption is high

Method used

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  • Efficient desulfurization and denitration absorbing agent and preparation method thereof
  • Efficient desulfurization and denitration absorbing agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] A high-efficiency desulfurization and denitrification absorbent

[0031] Raw material and ingredient composition: (unit: g)

[0032] The raw materials for preparing the high-efficiency desulfurization and denitrification absorbent consist of the following parts by weight: 50 g of ammonium sulfate, 20 g of urea, 20 g of alum, 12 g of magnesium hydroxide, 30 g of complexing agent, 10 g of borax, and 45 g of forming solution.

[0033] Among the above raw materials, the complexing agent is a combination of dimercaptopropanol and polyacrylic acid with a mass ratio of 2:3; the forming solution is a tetramethylammonium hydroxide solution with a mass fraction of 3%, and phosphoric acid with a mass fraction of 1.0% Sodium hydrogen disodium solution, the mass ratio of the two is 5:1.

[0034] The preparation method of the above-mentioned high-efficiency desulfurization and denitrification absorbent comprises the following steps:

[0035] S10, mix the complexing agent and deioni...

Embodiment 2

[0039] A high-efficiency desulfurization and denitrification absorbent

[0040] Raw material and ingredient composition: (unit: g)

[0041] The raw materials for preparing the high-efficiency desulfurization and denitrification absorbent consist of the following parts by weight: 150g of ammonium sulfate, 60g of urea, 100g of alum, 26g of magnesium hydroxide, 45g of complexing agent, 20g of borax, and 65g of forming solution.

[0042] Among the above raw materials, the complexing agent is a combination of sodium ethylenediamine tetramethylene phosphate and sulfosalicylic acid with a mass ratio of 1:5; the forming solution is a tetramethylammonium hydroxide solution with a mass fraction of 5%. It includes disodium hydrogen phosphate solution with a mass fraction of 1.2%, and the mass ratio of the two is 5:1.

[0043] The preparation method of the above-mentioned high-efficiency desulfurization and denitrification absorbent comprises the following steps:

[0044] S10, mix the com...

Embodiment 3

[0048] A high-efficiency desulfurization and denitrification absorbent

[0049] Raw material and ingredient composition: (unit: g)

[0050] The raw materials for preparing the high-efficiency desulfurization and denitrification absorbent consist of the following parts by weight: 80g of ammonium sulfate, 30g of urea, 30g of alum, 16g of magnesium hydroxide, 36g of complexing agent, 12g of borax and 55g of forming solution.

[0051] Among the above raw materials, the complexing agent is triethanolamine; the forming solution is a tetramethylammonium hydroxide solution with a mass fraction of 3%, and also includes a disodium hydrogen phosphate solution with a mass fraction of 1.0%, and the mass ratio of the two is 5:1 .

[0052] The preparation method of the above-mentioned high-efficiency desulfurization and denitrification absorbent comprises the following steps:

[0053] S10, mix the complexing agent and deionized water according to the mass ratio of 5:1.2, and add the ammoni...

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Abstract

The invention discloses an efficient desulfurization and denitration absorbing agent and a preparation method thereof. The efficient desulfurization and denitration absorbing agent comprises, by weight, 5-15 parts of ammonium sulfate, 2-6 parts of urea, 2-10 parts of white alum, 1.2-2.6 parts of magnesium hydroxide, 3.0-4.5 parts of complexing agents, 1.0-2.0 parts of sodium borate and 4.5-6.5 parts of molding solution. According to the efficient desulfurization and denitration absorbing agent and the preparation method thereof, the absorbing agent lower precipitated mixture powder dispersed in the molding solution and the sodium borate, the lower precipitated mixture powder comprises the ammonium sulfate, the urea, the white alum and the magnesium hydroxide, raw materials are complexed through the complexing agents, dried and crushed to prepare the absorbing agent, the absorbing agent is uniform in shape and stable in nature, sulfate and nitrate can be rapidly, efficiently and thoroughly removed, and environments cannot be polluted.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a high-efficiency desulfurization and denitrification absorbent and a preparation method thereof. Background technique [0002] SO in coal flue gas 2 and NO x It is the main source of air pollutants. At present, the simultaneous desulfurization and denitrification of flue gas is the main development trend of air pollution control. [0003] Flue gas denitrification technology is divided into selective catalytic reduction (SCR) denitrification, selective non-catalytic reduction (SNCR) denitrification and simultaneous desulfurization and denitrification. Selective catalytic reduction denitrification process is a widely used denitrification process abroad. SCR has a high denitrification efficiency, which can reach more than 90%, and can make full use of the heat of flue gas. But the disadvantage is that the catalyst is easily poisoned, the reactor is worn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14
CPCB01D53/1493
Inventor 陈海燕
Owner DSP TECH DEV WENZHOU CO LTD
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