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Method for activated carbon fiber variable voltage desorption gas

A technology of activated carbon fiber and variable voltage, which is applied in separation methods, combustible gas purification, chemical instruments and methods, etc., and can solve the problems of high energy consumption

Inactive Publication Date: 2009-06-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high energy consumption of the existing activated carbon fiber desorption gas method, and to provide a method for activated carbon fiber variable voltage desorption gas

Method used

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specific Embodiment approach 1

[0009] Specific embodiment 1: The method for activated carbon fiber variable voltage desorption gas in this embodiment is realized according to the following steps: 1. The two ends of the adsorption bed are heated for 28 to 32 seconds by an AC voltage of 4 to 6V in sequence, and the temperature of the activated carbon fiber reaches 29 to 31°C , and then lowered to room temperature; 2. 8-12V AC voltage heating for 28-32 seconds, the activated carbon fiber temperature reached 44-46 ℃, and then dropped to room temperature; 3. 13-17V AC voltage heating for 28-32 seconds, the activated carbon fiber The temperature reaches 70-72°C, and then drops to room temperature; 4. The AC voltage of 18-22V is heated for 28-32 seconds, and the temperature of the activated carbon fiber reaches 110-110°C, and then drops to room temperature; 5. The AC voltage of 13-17V is heated, After the temperature reaches 70-72°C, change the voltage of 13-17V to 4-6V and continue heating; 6. Maintain the tempera...

specific Embodiment approach 2

[0010] Embodiment 2: This embodiment differs from Embodiment 1 in that in Step 1, both ends of the adsorption bed are heated by an AC voltage of 4.5-5.5V. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 1, both ends of the adsorption bed are heated by an AC voltage of 4V. Others are the same as in the first embodiment.

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Abstract

The method for activated carbon fiber variable voltage desorption gas relates to a method of desorption gas by using activated carbon fiber. The method solves the problem of high energy consumption in the prior art. The method comprises: the two ends of an adsorbent bed are sequentially switched on 4-6V of alternating voltage to be heated for 28-32s, 8-12V of alternating voltage to be heated for 28-32s, 13-17 V of alternating voltage to be heated for 28-32s, 18-22 V of alternating voltage to be heated for 28-32s and 13-17 V of alternating voltage, and is then continuously heated by changing the 13-17 V of alternating voltage into 4-6V of alternating voltage when the temperature reaches 70-72 DEG C; the temperature of the carbon fiber is kept within the range of 69-71 DEG C for 8-12min, and the gas with the mass percent of 90-99% can be obtained by desorption. The method has short desorption time, low energy consumption, and simple operation and technique.

Description

technical field [0001] The invention relates to a method for desorbing gas from activated carbon fibers. Background technique [0002] Before the 1970s, the application of activated carbon (activated carbon fiber) in China was mainly concentrated in the sugar, medicine and monosodium glutamate industries; after the 1980s, it was expanded to water treatment and environmental protection industries; in the 1990s, it was expanded to solvent recovery, Food and beverage purification, air purification, desulfurization, carrier, medicine, gold extraction and semiconductor applications and other fields. Nowadays, activated carbon is widely used in the form of particle adsorption carrier for the separation of gases, organic substances, inorganic simple substances and metal elements. However, after the adsorption of activated carbon (activated carbon fiber) is saturated, it is generally discarded, buried or incinerated. These waste activated carbons that adsorb a large amount of organ...

Claims

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Application Information

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IPC IPC(8): B01D53/04B01J20/34B01J20/20
Inventor 谭羽非卜宪标
Owner HARBIN INST OF TECH
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