Flame-retardant activated carbon for adsorbing ammonia gas and preparation method of flame-retardant activated carbon

An activated carbon and flame retardant technology, applied in the field of flame retardant activated carbon and its preparation, can solve problems such as fire risk, and achieve the effects of avoiding fire danger, avoiding fire accidents, and simple equipment

Pending Publication Date: 2022-07-01
惠州市绿色能源与新材料研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the fire risk of activated carbon in the hot air regeneration process, the present invention aims to provide an activated carbon with flame retardant effect and high ammonia adsorption capacity and its preparation method

Method used

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  • Flame-retardant activated carbon for adsorbing ammonia gas and preparation method of flame-retardant activated carbon
  • Flame-retardant activated carbon for adsorbing ammonia gas and preparation method of flame-retardant activated carbon
  • Flame-retardant activated carbon for adsorbing ammonia gas and preparation method of flame-retardant activated carbon

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Experimental program
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Effect test

Embodiment 1

[0020] The activated carbon was calcined in a tube furnace at 400 °C for 12 h under nitrogen atmosphere. Take 1g[Bim]NO 3 Dissolve in 35mL of ethanol, slowly add 9g of calcined activated carbon, and stir at room temperature for 24h. Rotary steam at 80°C for 2h, rotation speed 40rpm, pressure 10kpa. After removing a large amount of ethanol, vacuum drying at 80°C for 24 hours, the vacuum degree is -90kpa, and the flame-retardant activated carbon 1 with a loading of 10wt% is obtained.

Embodiment 2

[0022] The activated carbon was calcined in a tube furnace at 400 °C for 12 h under nitrogen atmosphere. Take 1g[Eim]NO 3 Dissolve in 35mL of ethanol, slowly add 9g of calcined activated carbon, and stir at room temperature for 24h. Rotary steam at 80°C for 2h, rotation speed 40rpm, pressure 10kpa. After removing a large amount of ethanol, vacuum drying at 80°C for 24 hours, and the vacuum degree is -90kpa, to obtain flame-retardant activated carbon 2 with a loading of 10wt%.

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Abstract

The invention relates to flame-retardant activated carbon for adsorbing ammonia gas and a preparation method of the flame-retardant activated carbon, the activated carbon is firstly subjected to high-temperature treatment to reduce oxygen-containing groups easy to oxidize on the surface, then ionic liquid is loaded on the activated carbon through an impregnation method, and the flame-retardant activated carbon is obtained after excessive solvent is removed. The flame-retardant activated carbon prepared by the method disclosed by the invention effectively inhibits oxidation heat release of the activated carbon in a regeneration process of a hot air method, reduces the ignition risk caused by local overheating, and has the advantages of good ammonia adsorption performance, simple and convenient preparation method, easiness in industrialization and the like.

Description

【Technical field】 [0001] The invention relates to a flame-retardant activated carbon and a preparation method thereof, in particular to a flame-retardant activated carbon with good ammonia adsorption performance and a preparation method thereof. 【Background technique】 [0002] Because of its large specific surface area and developed pore structure, activated carbon has strong adsorption capacity and is widely used in sewage treatment, industrial exhaust purification, etc., such as treatment of oily wastewater, VOC, desulfurization and denitrification, etc. The type and number of functional groups on the surface of activated carbon have an important impact on its interaction with polar or non-polar adsorbates. Therefore, the modification of activated carbon greatly increases its application value in various fields. Common modification techniques include acid modification, alkali modification, load modification, and high temperature reforming modification. [0003] The regen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J20/32B01D53/02
CPCB01J20/20B01J20/3078B01J20/3204B01J20/3217B01J20/3234B01D53/02B01D2257/406
Inventor 董海峰孙福顺王宗旭金肖胡宗元王俊男曾少娟白璐张香平张锁江
Owner 惠州市绿色能源与新材料研究院
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