NOx adsorbent

A technology of adsorbent and peroxidase, applied in alkali metal oxide/hydroxide, inorganic chemistry, gas treatment, etc., can solve the problems of low feasibility, low NOx purification efficiency, high investment, operation and maintenance costs, etc. problem, to achieve the effect of good treatment, convenient for industrial production, and ideal effect

Inactive Publication Date: 2017-05-31
ZHENGZHOU BEIDOU COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, industrial furnaces are x The treatment method is mainly selective catalytic reduction, which has high investment, operation and maintenance costs, and is suitable for large volume and continuous emission of furnace flue gas NO x governance
For intermittent, high-concentration NO x 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, diatomite is compounded with other raw materials with the same effect. Although physical adsorption methods such as simple diatomite adsorption are effective for NO x The purification efficiency is very low

Method used

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Effect test

Embodiment 1

[0016] In the embodiment of the present invention, a kind of NO x The adsorbent is composed of the following raw materials in parts by weight: 26 parts of diatomaceous earth, 9 parts of rutin, 5 parts of peroxidase, and 1 part of triethanolamine.

[0017] The peroxidase was mixed with 3.2 times the mass of ethanol to prepare a peroxidase solution; the rutin was mixed with 8.3 times the mass of deionized water to prepare a rutin solution. The diatomite and triethanolamine were mixed and ground, added with rutin solution, heated to 88°C, sealed and stirred for 86min at this temperature, then added with peroxidase solution, cooled to 66°C and stirred at this temperature for 52min, Then it was lowered to 60°C and ultrasonically treated at this temperature for 33min, the ultrasonic power was 1000W, and then stirred at a temperature of 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 kind of NO x The adsorbent is composed of the following raw materials in parts by weight: 34 parts of diatomaceous earth, 17 parts of rutin, 13 parts of peroxidase, and 5 parts of triethanolamine.

[0020] The peroxidase was mixed with 3.2 times the mass of ethanol to prepare a peroxidase solution; the rutin was mixed with 8.3 times the mass of deionized water to prepare a rutin solution. The diatomite and triethanolamine were mixed and ground, added with rutin solution, heated to 88°C, sealed and stirred for 86min at this temperature, then added with peroxidase solution, cooled to 66°C and stirred at this temperature for 52min, Then it was lowered to 60°C and ultrasonically treated at this temperature for 33min, the ultrasonic power was 1000W, and 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 kind of NO x The adsorbent is composed of the following raw materials in parts by weight: 28 parts of diatomaceous earth, 11 parts of rutin, 7 parts of peroxidase, and 2 parts of triethanolamine.

[0023] The peroxidase was mixed with 3.2 times the mass of ethanol to prepare a peroxidase solution; the rutin was mixed with 8.3 times the mass of deionized water to prepare a rutin solution. The diatomite and triethanolamine were mixed and ground, added with rutin solution, heated to 88°C, sealed and stirred for 86min at this temperature, then added with peroxidase solution, cooled to 66°C and stirred at this temperature for 52min, Then it was lowered to 60°C and ultrasonically treated at this temperature for 33min, the ultrasonic power was 1000W, stirred at 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 NOx adsorbent. The NOx adsorbent is prepared from, by weight, 26-34 parts of diatomite, 9-17 parts of rutin, 5-13 parts of peroxidase and 1-5 parts of triethanolamine. Diatomite and triethanolamine are mixed and ground, rutin and peroxidase are used for treating an adsorbent obtained through an ultrasonic effect, the adsorbent has higher mechanical strength, the service life of the adsorbent is prolonged, and the replacement frequency is reduced. The adsorbent has high treatment efficiency on NOx with high concentration and further has the advantages of being high in purification speed, good in treatment effect, high in adsorption capacity, long in replacement period and the like. The NOx adsorbent has no harm to human beings, and is not corrosive, stable in performance and easy to operate, no special equipment is needed, and no secondary pollution is caused in the treatment process. The preparation process is simple, easy to operate, low in cost, efficient, environmentally friendly and suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of adsorbents, in particular to a NO x adsorbent. Background technique [0002] Nitrogen oxides (NO x ) are many, common ones include nitrous oxide (N 2 O), Nitric Oxide (NO), Nitrogen Dioxide (NO) 2 ), nitrous oxide (N 2 O 3 ), nitrous oxide (N 2 O 4 ) and nitrous oxide (N 2 O 5 ), in addition to nitric oxide dimer (N 2 O 2 ), nitrosyl azide (N 4 O), nitrogen trioxide (NO) 3 ), but mainly NO and NO 2 , which are common air pollutants. At present, industrial furnaces have no effect on NO x The most common treatment method is selective catalytic reduction. This method has high investment, operation and maintenance costs, and is suitable for kiln flue gas NO emissions with atmospheric volume and continuous emission. x Governance. For intermittent, high concentrations of NO x The feasibility of using this method is not high, and the dry adsorption process with small investment, stable operatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01J20/165B01D53/02B01D2257/40B01D2258/02B01J20/22B01J20/28007
Inventor 不公告发明人
Owner ZHENGZHOU BEIDOU COMM TECH
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