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Semicoke-based activated carbon adsorption material as well as preparation method and application thereof

A technology based on activity and carbon adsorption, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of difficult hole expansion, limited application of semi-coke-based activated carbon materials, imperfect processes, etc., and achieve economical Significant benefits, less heat of adsorption, and low cost

Active Publication Date: 2020-01-07
中石化石油工程技术服务有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the semi-coke material has a dense structure, great difficulty in hole expansion, and the domestic process is not yet perfect, resulting in great restrictions on the application of semi-coke-based activated carbon materials.

Method used

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  • Semicoke-based activated carbon adsorption material as well as preparation method and application thereof
  • Semicoke-based activated carbon adsorption material as well as preparation method and application thereof
  • Semicoke-based activated carbon adsorption material as well as preparation method and application thereof

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preparation example Construction

[0023] The preparation method of the semi-coke-based activated carbon adsorption material according to the second aspect of the present invention is used to prepare the semi-coke-based activated carbon adsorption material of the first aspect of the present invention, including: step one, providing semi-coke powder; The coke powder is added to the potassium hydroxide solution and immersed at room temperature to obtain the sample. The sample is dried and sealed to obtain the immersed semi-coke; step three, the immersed semi-coke is heated, and carbon dioxide gas is used as the activator to activate The activated semi-coke-based activated carbon adsorption material is dried in a vacuum and sealed for storage.

[0024] In the preparation method of the semi-coke-based activated carbon adsorption material according to the second aspect of the present invention, in step 1, the particle size of the semi-coke powder is 60 mesh.

[0025] In the preparation method of the semi-coke-based activ...

Embodiment 1

[0037] Step 1: Take the semi-coke raw material and grind it in a ball mill for 8 hours to obtain 60 mesh semi-coke powder.

[0038] Step 2: Add 20 g of ground 60 mesh semi-coke powder to 20 mL of 1 mmol / L KOH solution and soak at room temperature for 6 hours, and then dry the obtained sample at 60° C. and store it in a sealed container.

[0039] Step 3. Take 10g of the semi-coke material after immersion, control the activation temperature to 700°C, the heating time 40min, the activation time 120min, and the activator flow rate 60mL / min. After activation, vacuum dry the activated carbon at 120°C and keep it sealed. Activator is CO 2 gas.

Embodiment 2-27

[0041] The semi-coke-based activated carbon adsorption material was prepared using the method of Example 1, wherein the parameter settings during the preparation process are listed in Table 1.

[0042] In addition, the drying temperature in step two is 60°C, the heating time in step three is 40 minutes, and the vacuum drying temperature is 120°C.

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Abstract

The invention provides a semicoke-based activated carbon adsorption material as well as a preparation method and application thereof. Reaction raw materials of the semicoke-based activated carbon adsorption material comprise semicoke powder, a potassium hydroxide solution and carbon dioxide gas, and the carbon dioxide gas is used as an activating agent. The preparation method of the semicoke-basedactivated carbon adsorption material comprises the following steps: step 1, providing the semicoke powder; 2, adding the semicoke powder into the potassium hydroxide solution, impregnating at normaltemperature to obtain a sample, drying the sample, and carrying out sealed storage to obtain impregnated semicoke; and 3, heating the impregnated semicoke, activating the semicoke by using the carbondioxide gas as the activator, drying the activated semicoke-based activated carbon adsorption material in vacuum, and carrying out sealed storage. When the semicoke-based activated carbon adsorption material is applied to organic sulfur waste gas such as methyl mercaptan and carbonyl sulfide, the removal efficiency of organic sulfur can be effectively improved.

Description

Technical field [0001] The invention relates to the field of adsorption treatment, in particular to a semi-coke-based activated carbon adsorption material and a preparation method and application thereof. Background technique [0002] Volatile organic compounds (VOCs) are harmful organic industrial waste gases, which are harmful to the human body and the environment. With the development of industrialization and urbanization in China, especially the construction of sewage treatment plants, landfills and various chemical plants, odor pollution has become increasingly serious. In my country’s emission standards for odor pollutants (GB14554-93), dimethyl sulfide (DMS), methyl mercaptan, dimethyl disulfide (DMDS), hydrogen sulfide (H2S), ammonia (NH3), trimethylamine , Styrene and carbon disulfide (CS2) are listed as priority control pollutants. Among them, sulfur-containing organic odor occupies a large share of odor pollution. Because of its low odor threshold, it involves a wide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01J20/20B01D53/02B01D2257/708B01D2257/306Y02C20/40Y02A50/20
Inventor 朱红彬杨贵东张硕琳李金环祝威杨晓娜董健秦少华许堡荣严孝清刘海丽傅莉张新军张鹏董金婷陈莉
Owner 中石化石油工程技术服务有限公司
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