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Nitrogen oxide adsorbent as well as preparation method and application thereof

A technology of nitrogen oxides and adsorbents, applied in chemical instruments and methods, other chemical processes, gas treatment, etc., can solve problems such as high investment, operation and maintenance costs, low feasibility, and low purification efficiency of nitrogen oxides , to achieve the effect of convenient industrial production, good treatment effect and ideal effect

Inactive Publication Date: 2017-02-15
ZHENGZHOU YUANRAN BIOLOGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the treatment method of industrial furnaces and kilns for nitrogen oxides is mainly based on selective catalytic reduction. This method has high investment, operation and maintenance costs, and is suitable for the treatment of nitrogen oxides in furnace flue gas with large volume and continuous emission.
For the treatment of intermittent and high-concentration nitrogen oxides, the feasibility of using this method is not high, and the dry adsorption process with small investment, stable operation, and low maintenance and operation costs shows its advantages
In the prior art, nano attapulgite is compounded with other raw materials with the same effect. Although the pure nano attapulgite adsorption and other physical adsorption methods have very low purification efficiency for nitrogen oxides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the embodiment of the present invention, a nitrogen oxide adsorbent is composed of the following raw materials in parts by weight: 26 parts of nano-attapulgite, 9 parts of gallic acid, 5 parts of peroxidase, and 1 part of cerium acetylacetonate.

[0017] The peroxidase is mixed with 3.2 times the mass of ethanol to prepare the peroxidase solution; the gallic acid is mixed with 8.3 times the mass of deionized water to prepare the gallic acid solution. Mix and grind nano-attapulgite and cerium acetylacetonate, add gallic acid solution, heat to 88°C and seal and stir at this temperature for 86min, then add peroxidase solution, cool down to 66°C and stir at this temperature 52min, then lowered to 60°C and ultrasonically treated at this temperature for 33min, the ultrasonic power was 1000W, then stirred at 98°C until dry, and then calcined in a muffle furnace at 430°C for 3.2h to obtain the adsorbent.

Embodiment 2

[0019] In the embodiment of the present invention, a nitrogen oxide adsorbent is composed of the following raw materials in parts by weight: 34 parts of nano-attapulgite, 17 parts of gallic acid, 13 parts of peroxidase, and 5 parts of cerium acetylacetonate.

[0020] The peroxidase is mixed with 3.2 times the mass of ethanol to prepare the peroxidase solution; the gallic acid is mixed with 8.3 times the mass of deionized water to prepare the gallic acid solution. Mix and grind nano-attapulgite and cerium acetylacetonate, add gallic acid solution, heat to 88°C and seal and stir at this temperature for 86min, then add peroxidase solution, cool down to 66°C and stir at this temperature 52min, then lowered to 60°C and ultrasonically treated at this temperature for 33min, with an ultrasonic power of 1000W, then stirred at a temperature of 100°C until dry, and then calcined in a muffle furnace at 430°C for 3.2h to obtain the adsorbent.

Embodiment 3

[0022] In the embodiment of the present invention, a nitrogen oxide adsorbent is composed of the following raw materials in parts by weight: 28 parts of nano-attapulgite, 11 parts of gallic acid, 7 parts of peroxidase, and 2 parts of cerium acetylacetonate.

[0023] The peroxidase is mixed with 3.2 times the mass of ethanol to prepare the peroxidase solution; the gallic acid is mixed with 8.3 times the mass of deionized water to prepare the gallic acid solution. Mix and grind nano-attapulgite and cerium acetylacetonate, add gallic acid solution, heat to 88°C and seal and stir at this temperature for 86min, then add peroxidase solution, cool down to 66°C and stir at this temperature 52min, then lowered to 60°C and ultrasonically treated at this temperature for 33min, with an ultrasonic power of 1000W, then stirred at a temperature of 99°C until dry, and then calcined in a muffle furnace at 430°C for 3.2h to obtain the adsorbent.

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Abstract

The invention discloses a nitrogen oxide adsorbent as well as a preparation method and an application thereof. The nitrogen oxide adsorbent is prepared from raw materials in parts by weight as follows: 26-34 parts of nano-attapulgite, 9-17 parts of gallic acid, 5-13 parts of peroxidase and 1-5 parts of cerium acetylacetonate. The adsorbent is prepared from the nano-attapulgite and cerium acetylacetonate through mixed grinding as well as treatment and ultrasonication with gallic acid and peroxidase, so that the adsorbent has higher mechanical strength, the service life of the adsorbent is prolonged, and the replacement frequency is reduced. The adsorbent has quite high treatment efficiency on high-concentration nitrogen oxides and has the advantages of high purification speed, good treatment effect, high adsorption capacity, long replacement period and the like; the adsorbent is harmless to human body, non-corrosive, stable in performance and simple to operate, needs no special equipment and cannot produce secondary pollution in a treatment process. The preparation process is simple, the operation is easy, the cost is low, efficiency and environmental performance are realized, and industrial production is facilitated.

Description

technical field [0001] The invention relates to the technical field of adsorbents, in particular to a nitrogen oxide adsorbent and its preparation method and application. Background technique [0002] There are many types of nitrogen oxides (nitrogen oxides), common ones include nitrous oxide (N 2 O), nitric oxide (NO), nitrogen dioxide (NO 2 ), nitrogen trioxide (N 2 o 3 ), dinitrogen tetroxide (N 2 o 4 ) and dinitrogen pentoxide (N 2 o 5 ), and nitric oxide dimer (N 2 o 2 ), azide nitrosyl (N 4 O), nitrogen trioxide (NO 3 ), but mostly NO and NO 2 , which are common air pollutants. At present, the treatment method for nitrogen oxides in industrial furnaces is mainly based on selective catalytic reduction. This method has high investment, operation and maintenance costs, and is suitable for the treatment of nitrogen oxides in furnace flue gas with large volume and continuous emission. For the treatment of intermittent and high-concentration nitrogen oxides, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30B01D53/02
CPCB01J20/12B01D53/02B01D2257/40B01D2258/0283B01J20/0207
Inventor 不公告发明人
Owner ZHENGZHOU YUANRAN BIOLOGY TECH CO LTD
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