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Device and method for modifying activated carbon adsorbent by using rotating low-temperature plasma

A low-temperature plasma and activated carbon adsorption technology, which is applied in the field of plasma modified activated carbon adsorbents, can solve problems such as destruction and atmospheric environmental pollution, and achieve the effects of simple process, improved breakthrough time, and mature preparation conditions

Inactive Publication Date: 2015-04-29
FUJIAN ZIJIN ENVIRONMENT ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But on the whole, air pollution and damage have not been fully controlled

Method used

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  • Device and method for modifying activated carbon adsorbent by using rotating low-temperature plasma
  • Device and method for modifying activated carbon adsorbent by using rotating low-temperature plasma
  • Device and method for modifying activated carbon adsorbent by using rotating low-temperature plasma

Examples

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Effect test

Embodiment 1

[0039] (1) figure 2 It is the scanning electron microscope picture of coconut shell activated carbon AC as it is. The coconut shell activated carbon AC is screened before use, sieved with 10-16 meshes, and the obtained activated carbon is placed in a beaker filled with deionized water that is about twice the volume of activated carbon. Place it in a digitally controlled ultrasonic cleaner filled with an aqueous solution, ultrasonicate at room temperature for 20 minutes, remove powder and oily substances in the activated carbon, wash with deionized water, filter with suction, and dry at 105°C;

[0040] (2) Weigh 10g of activated carbon in (1) and spread it on the discharge area of ​​the reactor, assemble it completely, and check the airtightness of the reactor inlet and outlet;

[0041] (3) Inject 50ml / min of N 2And start the motor to make it rotate for 4~5min, then adjust the frequency (100~300Hz), voltage (15~25KV) and response time (5~15min) of the AC power supply to get N...

Embodiment 2

[0043] (1) Screen coconut shell activated carbon AC before use, sieve through 10-16 meshes, place the obtained activated carbon in a beaker filled with deionized water twice the volume of activated carbon, and place it in a water solution In a digitally controlled ultrasonic cleaner, ultrasonicate at room temperature for 20 minutes to remove powder and oily substances in the activated carbon, wash with deionized water, filter with suction, dry at 105°C, soak in 1mol / L hydrochloric acid solution for 12 hours, wash with deionized water until neutral, Dry at 105°C;

[0044] (2) Weigh 10g of activated carbon in (1) and spread it on the discharge area of ​​the reactor, assemble it completely, and check the airtightness of the reactor inlet and outlet;

[0045] (3) Pass in 50ml / min of air and start the motor to make it rotate for 4~5min, then adjust the frequency (100~300Hz), voltage (15~25KV) and response time (5~15min) of the AC power supply to get the air Activated carbon modifi...

Embodiment 3

[0047] (1) Screen coconut shell activated carbon AC before use, sieve through 10-16 meshes, place the obtained activated carbon in a beaker filled with deionized water twice the volume of activated carbon, and place it in a water solution In a digitally controlled ultrasonic cleaner, ultrasonicate at room temperature for 20 minutes to remove powder and oily substances in the activated carbon, wash with deionized water, filter with suction, and dry at 105°C;

[0048] (2) Weigh 10g of activated carbon in (1) and spread it on the discharge area of ​​the reactor, assemble it completely, and check the airtightness of the reactor inlet and outlet;

[0049] (3) Inject 50ml / min of CO 2 And start the motor to make it rotate for 4~5min, then adjust the frequency (100~300Hz), voltage (15~25KV) and response time (5~15min) of the AC power supply to get the CO 2 Activated carbon modified under the best conditions in the atmosphere, the best conditions are 20KV / 100Hz / 10min / CO 2 .

[0050]...

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Abstract

The invention discloses a device for modifying an activated carbon adsorbent by using a rotating low-temperature plasma. A track is transmitted by a motor, and is wound on a quartz tube reactor, and the two ends of the quartz tube reactor are provided with an air inlet and an air outlet; a joint of an air inlet pipe is installed in the air inlet by means of a sealed bearing, and a discharge area is formed in the middle of the quartz tube reactor and is interspersed in a grounding coil; the diameter of the grounding coil is greater than the outer diameter of the quartz tube reactor, and the grounding coil is erected on a grounding support; a corona wire is erected inside the discharge area of the quartz tube reactor by means of a rolling bearing, penetrates out of the air outlet of the quartz tube reactor and is connected with an alternating current power supply. The invention also discloses a corresponding method. The device and the method provided by the invention have the advantages of easiness in operation, environment friendliness, economy, and large-scale production, the obtained absorbent is in a granular shape, the penetration time of the adsorbent can be prolonged, the CH4 adsorption capacity of the adsorbent can be increased, and the device and the method can be used for effectively enriching and separating CH4 gas with the concentration of 0.2% or used for the treatment field of volatile organic compounds (VOCs).

Description

technical field [0001] The invention belongs to the technical field of preparation of plasma-modified activated carbon adsorbents, and in particular relates to a device and method for rotating low-temperature plasma-modified activated carbon adsorbents. Background technique [0002] The greenhouse effect of methane is CO 2 21 times that of CO 2 Seven times that of methane, the damage to the atmospheric environment caused by the discharge of methane into the atmosphere has become a major environmental problem faced by the whole world. Since the 1970s, the Chinese government has stepped up its efforts in environmental protection, promulgated and adopted some policies and measures for the prevention and control of organic waste gas, in order to reduce the emission of organic waste gas, and have received certain results. But on the whole, atmospheric pollution and damage have not been fully controlled. At present, my country's annual emission of VOCs is about 18 million tons....

Claims

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Application Information

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IPC IPC(8): B01J20/20B01D53/02
CPCB01D53/02B01D2253/102B01D2257/7025B01J20/20B01J2220/00Y02C20/20
Inventor 王洪明吴新谦吴晓东寿铁邦
Owner FUJIAN ZIJIN ENVIRONMENT ENG TECH
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