Adsorbent thermal desorption regeneration method and device thereof

A regeneration device and adsorbent technology, applied in separation methods, filter regeneration, chemical instruments and methods, etc., can solve the problems of poor regeneration performance of adsorbents, high purification operation costs, secondary pollution, etc., and achieve simplified operation and saving Operating costs and the effect of extending the service life

Inactive Publication Date: 2009-06-03
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high price of adsorbents with good adsorption performance, direct discarding will inevitably lead to high purification operation costs
However, due to the low exposure temperature, the sun exposure is not enough to completely desorb the formaldehyde and other volatile organic compounds adsorbed on the surface of the adsorbent, resulting in poor regeneration performance of the adsorbent. Compound re-entering the atmosphere can also cause secondary pollution
Therefore, neither method is ideal for dealing with adsorbents that have failed due to adsorption reaching saturation

Method used

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  • Adsorbent thermal desorption regeneration method and device thereof
  • Adsorbent thermal desorption regeneration method and device thereof
  • Adsorbent thermal desorption regeneration method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Arrange the adsorbent containing the adsorbate on a porous electric heating plate.

[0037] Granular activated carbon impregnated with manganese oxide was selected as the adsorbent, the manganese oxide load was 2%, and the adsorbent was in bulk, that is, the adsorbent packaging bag structure commonly used in households. Arrange the adsorbent on the electric heating plate of the thermal desorption regeneration device of the present invention.

[0038] (2) Turn on the electric heating plate and keep the temperature at 270° C. to desorb the adsorbate on the surface of the adsorbent.

[0039]Use the temperature controller 5 installed outside the box 1 to heat the porous electric heating plate of the lower cavity 3 to increase the temperature of the adsorbent to 270°C. The thermocouple 4 is used to monitor the temperature in the lower cavity 3 and feedback Give the temperature controller 5 to keep the temperature in the lower chamber 3 at 270°C.

[0040] (3) The desorb...

Embodiment 2

[0047] (1) Arrange the adsorbent containing the adsorbate on a porous electric heating plate.

[0048] Granular activated carbon impregnated with manganese oxide was selected as the adsorbent, the manganese oxide load was 9%, and the adsorbent was in bulk, that is, the adsorbent packaging bag structure commonly used in households. Arrange the adsorbent on the electric heating plate of the thermal desorption regeneration device of the present invention.

[0049] (2) Turn on the electric heating plate and keep the temperature at 200° C. to desorb the adsorbate on the surface of the adsorbent.

[0050] Use the temperature controller 5 installed outside the box 1 to heat the porous electric heating plate of the lower chamber 3 to raise the temperature of the adsorbent to 200°C. The thermocouple 4 is used to monitor the temperature in the lower chamber 3 and feed back Give the temperature controller 5 to keep the temperature in the lower chamber 3 at 200°C.

[0051] (3) The desor...

Embodiment 3

[0058] (1) Arrange the adsorbent containing the adsorbate on a porous electric heating plate.

[0059] Granular activated carbon impregnated with manganese oxide was selected as the adsorbent, the manganese oxide load was 5%, and the adsorbent was in bulk, that is, in the form of the adsorbent packaging bag structure commonly used in households. Arrange the adsorbent on the electric heating plate of the thermal desorption regeneration device of the present invention.

[0060] (2) Turn on the electric heating plate and keep the temperature at 230°C to desorb the adsorbate on the surface of the adsorbent.

[0061] Use the temperature controller 5 installed outside the box 1 to heat the porous electric heating plate of the lower cavity 3 to raise the temperature of the adsorbent to 230°C. The thermocouple 4 is used to monitor the temperature in the lower cavity 3 and feedback Give the temperature controller 5 to keep the temperature in the lower chamber 3 at 230°C.

[0062] (3)...

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Abstract

The invention discloses an adsorbent thermal desorption regeneration method and a device thereof. The method comprises the steps as follows: adsorbent is heated by electricity to the temperature of 200-270 DEG C to desorb adsorbate; desorption gas rises by the heat to contact with the catalyst and to be catalyzed and oxidized into carbon dioxide and water. The device leads the desorbed thermal current to repeatedly circulate and guarantees that the desorption is complete, the catalysis and oxidization is complete and energy is saved. After the desorption, catalysis and oxidization, the device naturally cools to room temperature; the desorbed and regenerated adsorbent is applicable to absorption work. The invention has the advantages of high efficiency, energy-saving, secondary pollution-free and the like, and is applied to desorbing and regenerating room air cleaning adsorbent which reaches the absorption saturation state and detoxicating the desorbed air.

Description

technical field [0001] The invention belongs to the technical field of adsorbent desorption regeneration utilization applied to public health and environmental protection, and is especially suitable for a method and a device for thermal desorption regeneration treatment of adsorbents for indoor air purification. Background technique [0002] Adsorption is the main method for purifying formaldehyde and other volatile organic compounds contained in indoor air. At present, there are two ways to set up the adsorbent used for indoor air purification: one is to load it inside the indoor air purifier, allowing the airflow to pass through the adsorbent to achieve the purpose of adsorbing and removing formaldehyde and other volatile organic compounds in the air; the other One is to pack the adsorbent in a packaging bag, and place the packaging bag in a place where formaldehyde and other harmful gases are emitted indoors, such as furniture cabinets, drawers, etc., to adsorb formaldehy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34B01D53/86
Inventor 朱天乐樊星
Owner BEIHANG UNIV
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