Spherical particle compound material containing active carbon and preparation technique thereof

A composite material and spherical particle technology, which is used in the field of environmental purification and pollutant treatment, can solve the problems of easy-to-drop powder, short effective service period, poor repeated use effect, etc., and achieve the effect of recovery of adsorption activity, improvement of appearance, and improvement of strength.

Inactive Publication Date: 2011-08-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem: The present invention aims at the defects of the above-mentioned prior art, and provides a spherical granular composite material containing activated carbon and its preparation process, so as to overcome the fact that the existing activated carbon adsorption products are easy to drop powder, have short effective use period and poor reusable effect Shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Take 65% of activated carbon, 20% of bentonite, and 15% of attapulgite by mass percentage, add an additive accounting for 4% of the total mass of the powder of the first three, and the additive is composed of NaCl by mass ratio: KCl: CaCl 2 :MgCl 2 = 0.8: 1: 1: 1.2, mix and evenly mix, roll molding in a disc granulator to a spherical particle core of φ9-9.5mm.

[0018] (2) Take bentonite 25% and attapulgite 75% by mass percentage, add an additive accounting for 4% of the total mass of the former two powders, and the additive is composed of NaCl by mass ratio: KCl: CaCl 2 :MgCl 2 =0.8:1:1:1.2, mix uniformly, and prepare shell material.

[0019] (3) Rolling and adhering the shell material on the surface of the prepared inner core, the thickness of which is 20-50 μm, to obtain a composite material green pellet.

[0020] (4) After the prepared composite material green pellets were dried in the shade under natural ventilation for 48 hours, they were moved into a heati...

Embodiment 2

[0022] (1) Take 35% of activated carbon, 20% of bentonite, and 45% of attapulgite by mass percentage, add an additive accounting for 2% of the total mass of the powder of the first three, and the additive is composed of NaCl by mass ratio: KCl: CaCl 2 : MgCl 2 =1:1:1:1, mix well. Roll molding in a disc granulator to a spherical granule core of φ9-9.5mm.

[0023] (2) Take bentonite 65% and attapulgite 35% by mass percentage, add an additive accounting for 2% of the total mass of the former two powders, and the additive is composed of NaCl by mass ratio: KCl: CaCl 2 : MgCl 2 = 1.2: 1.2: 0.8: 1, mix evenly to prepare the shell material.

[0024] (3) Rolling and adhering the shell material on the surface of the prepared inner core, the thickness of which is 20-50 μm, to obtain a composite material green pellet.

[0025] (4) The prepared pellets of the granular composite material were dried in a blast drying oven at 80°C for 8 hours, then moved into a heating furnace, and sinte...

Embodiment 3

[0027] (1) Take 50% of activated carbon, 25% of bentonite, and 25% of attapulgite ingredients by mass percentage, add an additive accounting for 4% of the total mass of the powder of the first three, and the additive is composed of NaCl by mass ratio: KCl: CaCl 2 : MgCl 2 =1:0.8:1.2:0.8, mix well. Roll molding in a disc granulator to a spherical granule core of φ9-9.5mm.

[0028] (2) Take bentonite 50% and attapulgite 50% batching by mass percentage, add the additive that accounts for the former two powder gross mass 7.5%, additive is composed of NaCl by mass ratio: KCl: CaCl2 :MgCl 2 = 1.2: 1.2: 0.8: 1, mix evenly to prepare the shell material.

[0029] (3) Rolling and adhering the shell material on the surface of the prepared inner core, the thickness of which is 20-50 μm, to obtain a composite material green pellet.

[0030] (4) After the prepared pellets of the granular composite material were dried in the shade under natural ventilation for 48 hours, they were moved in...

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Abstract

The present invention discloses a spherical granule composite material containing active carbon and a preparation technology. The material consists of an inner core containing the active carbon and a ceramic film layer casing. In the preparation technology, additive is added into the active carbon, bentonite and attapulgite to prepare for the inner core; the additive is added into the bentonite and the attapulgite to prepared for casing material; the casing material is conglutinated at the surface of the inner core to be calcined under high temperature to obtain the spherical granule composite material. The surface of the composite material containing the active carbon is the porous ceramic film layer casing, the structure ensures the absorption performance of the active carbon, also improves the pressure resistance and the wearing resistance at the same time and can prevent the chips and the powder of the active carbon from falling off; at the same time, after being used for a period, the material can be processed for desorption by the user, so as to recover the absorption activity of the material. The granule composite material can be applied to absorb and remove noxious and harmful gas.

Description

1. Technical field [0001] The invention belongs to the field of environmental purification and pollutant treatment, and in particular relates to a spherical granular composite material containing activated carbon and a preparation process thereof. 2. Background technology [0002] Activated carbon is a specially treated carbon with numerous tiny pores and a huge surface area. The surface area per gram of activated carbon is 500-1500 square meters. Activated carbon is a non-polar adsorbent with hydrophobic and organophilic properties. It can adsorb most organic gases, such as benzene, aldehydes, ketones, alcohols, hydrocarbons, etc., and odorous substances. Therefore, activated carbon is often used It is used for adsorption and recovery of organic solvents and treatment of malodorous substances. At the same time, due to the wide range of pore diameters of activated carbon, even for some polar adsorbates and some organic substances with large molecules, it still shows its exc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30
Inventor 董寅生吴玉玲郭超盛晓波储成林林萍华
Owner SOUTHEAST UNIV
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