Deep smoke purifying material, and preparation method and use method thereof

A flue gas deep purification and flue gas technology, applied in the field of flue gas purification, can solve the problems that the desulfurization technology is difficult to meet the emission standards, the desulfurization technology is difficult to achieve, etc., and achieves the effects of thorough and rapid reaction, increased adsorption, and promotion of absorption.

Inactive Publication Date: 2015-01-14
GUANGZHOU BOXENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above table is a comparison of the advantages and disadvantages of the main flue gas desulfurization processes in power plants. The most widely used desulfurization technology is the limestone-gypsum flue gas desulfurization process, and the desulfurization efficiency can be greater than 95%. The requirements are getting higher and higher, and the traditional desulfurization technology has been difficult to meet the new emission s

Method used

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  • Deep smoke purifying material, and preparation method and use method thereof
  • Deep smoke purifying material, and preparation method and use method thereof

Examples

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Effect test

Embodiment 1

[0037] The flue gas deep purification material used in this embodiment is composed of the following components by weight percentage: CuO 10wt%, Cu 2 O 2wt%, Fe 3 O 4 5wt%, MnO 2 1wt%, sodium carbonate 5wt%, furfural slag activated carbon 77wt%, treatment object is 0.5% flue gas, pressure 0.1MPa, temperature 25°C, space velocity 20000h -1 . The flue gas passes through the bottom of the fixed bed and passes through the flue gas deep purification material layer. The purified flue gas is analyzed by gas chromatograph on-line, and the sulfur dioxide concentration is less than 40mg / m 3 . After the adsorbed saturated flue gas deep purification material is cleaned with 10% sodium carbonate solution, the sulfur dioxide concentration after purification is less than 43mg / m 3 .

Embodiment 2

[0039] The flue gas deep purification material used in this embodiment is composed of the following components by weight percentage: CuO 10wt%, ZnO5wt%, MoO 3 1wt%, NiO 2wt%, sodium hydroxide 10wt%, coconut shell activated carbon 72wt%, treatment object is 1% flue gas, pressure 0.3MPa, temperature 40℃, space velocity 12000h -1 . The flue gas passes through the bottom of the fixed bed and passes through the flue gas deep purification material layer. The purified flue gas is analyzed by gas chromatograph on-line, and the sulfur dioxide concentration is less than 45mg / m 3 . After the adsorbed and saturated flue gas deep purification material is cleaned by 10% sodium hydroxide solution, the sulfur dioxide concentration after purification is less than 42mg / m 3 .

Embodiment 3

[0041] The flue gas deep purification material used in this embodiment is composed of the following components by weight percentage: CaO 10wt%, ZnO 2wt%, Fe 3 O 4 10wt%, sodium bicarbonate 15wt%, titanium oxide modified alumina 63wt%, treatment object is 0.2% flue gas, pressure 0.1MPa, temperature 25°C, space velocity 10000h -1 . The flue gas passes through the bottom of the fixed bed and passes through the flue gas deep purification material layer. The purified flue gas is analyzed by gas chromatograph online, and the sulfur dioxide concentration is less than 50mg / m 3 . The adsorbed and saturated flue gas deep purification material is cleaned with 15% sodium bicarbonate solution, and the sulfur dioxide concentration after purification is less than 50mg / m 3 .

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Abstract

The invention discloses a deep smoke purifying material, and a preparation method and a use method thereof. The deep smoke purifying material comprises the following components in percentage by weight: 0-20 wt% of metal oxide, 1-40 wt% of alkaline or an alkali compound and 50-80 wt% of a carrier. The deep smoke purifying material is prepared by using a dipping method. According to the use method of the deep smoke purifying material, the deep smoke purifying material is used in a form of a stationary bed, and is suitable for being used in occasions with the smoke concentration of less than 2 percent, the pressure of 0.1-1MPa, the temperature of 0-200 DEG C, and the space velocity of 100-20000h<-1>; when an adsorbing material adsorbs smoke until saturation and the purifying efficiency is reduced, no stop is required for replacing the deep smoke purifying material, the deep smoke purifying material can be cleaned by directly using a solution of the alkaline or alkali compound, and the purifying efficiency can be recovered to reach an original level after the deep smoke purifying material is cleaned. The use method is low in operation cost, is capable of deeply purifying smoke, and is capable of meeting the emission standard of sulfur dioxide of 50mg/m<3>.

Description

Technical field [0001] The invention relates to the field of flue gas purification, in particular to a material for deep flue gas purification and a preparation method and use method thereof. Background technique [0002] SO2 is the culprit causing acid rain and one of the most harmful gases to the natural environment. If the direct discharge has a bad impact on production operations, the surrounding environment and factory workers, it is one of the environmental pollutants that must be eliminated or controlled. The emission of sulfur dioxide is one of the main causes of acid rain and smog. In the prior art, the main desulfurization processes of power plant flue gas are shown in Table 1. [0003] Table 1 Comparison of main desulfurization processes of power plant flue gas [0004] [0005] [0006] At present, domestic flue gas purification technologies include dust removal, desulfurization, and out-of-stock technologies. These technologies are already mature and widely used in in...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/06B01J20/04B01J20/32B01D53/04B01D53/86B01D53/78B01D53/50
CPCB01J20/20B01D53/502B01D53/508B01D53/78B01D53/8609B01D53/96B01D2257/302B01J20/04B01J20/06B01J20/3214B01J20/3234
Inventor 肖天存卢永春陈浩逸黄瑜
Owner GUANGZHOU BOXENERGY TECH
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