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Preparation method and application of flue gas purification desulfurizer

A technology for flue gas purification and desulfurization agent, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of reducing the pH value of slurry and negative desulfurization efficiency.

Pending Publication Date: 2022-05-31
通化鑫鸿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adipic acid is a weak acid, and the presence of a large amount of adipic acid will reduce the pH value of the slurry, which will have a negative effect on the desulfurization efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] S1: Incorporate nano-CaCO 3 , Nano Fe 2 o 3 Mix it with nano-ZnO at a molar ratio of 5.7:3.4:1, and put 3 times the volume of water into the mixture, heat it in a water bath and keep the temperature at 80°C, and stir thoroughly for 20 minutes to obtain the first product;

[0023] S2: Add 30 g of stearic acid, 15 g of trimethyl borate, 5 g of NaOH and 20 g of Fischer-Tropsch wax to the first product of 50 g of S1, and obtain the second product after stirring at a stirring speed of 1350 r / s for 30 min. product;

[0024] S3: Pour the second product of S2 into the surface of the suction filter for suction filtration, and rinse it with pure water three times during suction filtration to obtain the third product;

[0025] S4: put the third product into a drying oven for drying, the drying temperature is 110°C, and the drying time is 4 hours to obtain the precursor;

[0026] S5: Put the precursor into a grinder to grind, filter and screen the product with a particle size o...

Embodiment 2

[0028] S1: Incorporate nano-CaCO 3 , Nano Fe 2 o 3 Mix it with nano-ZnO at a molar ratio of 5:3.4:1, and put 3 times the volume of water into the mixture, heat it in a water bath and keep the temperature at 80°C, and stir thoroughly for 20 minutes to obtain the first product;

[0029] S2: Add 30 g of stearic acid, 15 g of trimethyl borate, 5 g of NaOH and 20 g of Fischer-Tropsch wax to the first product of 50 g of S1, and obtain the second product after stirring at a stirring speed of 1350 r / s for 30 min. product;

[0030] S3: Pour the second product of S2 into the surface of the suction filter for suction filtration, and rinse it with pure water three times during suction filtration to obtain the third product;

[0031] S4: put the third product into a drying oven for drying, the drying temperature is 110°C, and the drying time is 4 hours to obtain the precursor;

[0032] S5: Put the precursor into a grinder to grind, filter and screen the product with a particle size of ...

Embodiment 3

[0034] S1: Incorporate nano-CaCO 3 , Nano Fe 2 o 3 Mix it with nano-ZnO at a molar ratio of 4.3:2.9:1, and put 3.5 times the volume of water into the mixture, heat it in a water bath and keep the temperature at 80°C, and stir thoroughly for 20 minutes to obtain the first product;

[0035] S2: Add 25g of stearic acid, 10g of trimethyl borate, 5g of NaOH and 20g of carnauba wax to the first product of 50g of S1, and obtain the second product after stirring at a stirring speed of 1400r / s for 30min. product;

[0036] S3: Pour the second product of S2 into the surface of the suction filter for suction filtration, and rinse it with pure water three times during suction filtration to obtain the third product;

[0037] S4: put the third product into a drying oven for drying, the drying temperature is 110°C, and the drying time is 4 hours to obtain the precursor;

[0038] S5: Put the precursor into a grinder to grind after drying, and filter and screen the product with a particle s...

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Abstract

The invention discloses a preparation method and application of a flue gas purification desulfurizer, and belongs to the technical field of flue gas purification and desulfurization. The preparation method comprises the following steps: S1, mixing nano CaCO3, nano Fe2O3, nano ZnO and water, heating in a water bath, and fully stirring to obtain a first product; s2, adding a proper amount of stearic acid, boric acid ester, NaOH and a binder into the first product, and continuously stirring to obtain a second product; s3, placing the second product obtained in S2 on the surface of a suction filter for suction filtration, and flushing with pure water during suction filtration to remove surface impurities so as to obtain a third product; s4, drying the third product to obtain a precursor; and S5, putting the precursor into a grinding machine for grinding, and after grinding is finished, filtering and screening by using a screen to obtain the desulfurizing agent. The angle of repose of the prepared desulfurizer is smaller than 30%, and the desulfurization efficiency of the desulfurizer is far higher than that of a traditional desulfurizer and can reach 96% or above.

Description

technical field [0001] The invention relates to the technical field of flue gas purification and desulfurization, in particular to a preparation method and application of a flue gas purification and desulfurization agent. Background technique [0002] Flue gas or other industrial waste gas contains sulfur oxides, and direct discharge will cause serious pollution to the environment. Therefore, flue gas desulfurization has become an important part of environmental governance. At present, the desulfurization methods at home and abroad mainly include dry desulfurization, wet desulfurization, and semi-dry desulfurization. In China's thermal power plants and steel mills, more than 90% of them use wet lime / limestone-gypsum flue gas desulfurization process, but the operation and maintenance costs are high and the system reliability is low. Fouling and material failure are the biggest problems. Although the investment cost of dry desulfurization is low, the utilization rate of abso...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/50
CPCB01D53/81B01D53/508B01D2251/404B01D2257/302B01D2258/0283Y02A50/20
Inventor 冯艳峰魏久鸿魏钰珊魏丽燕
Owner 通化鑫鸿新材料有限公司