Semi-coke-based activated carbon adsorption material and preparation method and use thereof

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

Active Publication Date: 2022-08-09
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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  • Semi-coke-based activated carbon adsorption material and preparation method and use thereof
  • Semi-coke-based activated carbon adsorption material and preparation method and use thereof
  • Semi-coke-based activated carbon adsorption material and preparation method and use thereof

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preparation example Construction

[0023] The preparation method of semi-coke-based activated carbon adsorption material according to the second aspect of the present invention, for preparing the semi-coke-based activated carbon adsorption material of the first aspect of the present invention, includes: step 1, providing semi-coke powder; The coke powder is added to the potassium hydroxide solution, and the sample is obtained by dipping at room temperature. The sample is dried and sealed to obtain the impregnated semi-coke. The activated semi-coke-based activated carbon adsorption material is dried in a vacuum and stored in a sealed manner.

[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 meshes.

[0025] In the preparation method of semi-coke-based activated carbon adsorption material according to the second aspect of the present invention, in step 2,...

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 into 20 mL of 1 mmol / L KOH solution and soak for 6 hours at room temperature, then dry the obtained sample at 60° C. and store in a sealed container.

[0039] Step 3: Take 10g of the impregnated semi-coke material, control the activation temperature to be 700°C, the heating time to be 40min, the activation time to be 120min, and the flow rate of the activator to be 60mL / min. After activation, the activated carbon is vacuum-dried at 120°C and sealed for storage. , the activator is CO 2 gas.

Embodiment 2-27

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

[0042] In addition, the drying temperature in the second step is 60° C., the heating time in the third step is 40 min, and the vacuum drying temperature is 120° C.

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Abstract

The invention provides a semi-coke-based activated carbon adsorption material and a preparation method and application thereof. The reaction raw materials of the semi-coke-based activated carbon adsorption material include semi-coke powder, potassium hydroxide solution and carbon dioxide gas, wherein the carbon dioxide gas is used as an activator. The preparation method of semi-coke-based activated carbon adsorption material includes: step 1, providing semi-coke powder; step 2, adding semi-coke powder into potassium hydroxide solution, immersing the sample at room temperature to obtain a sample, drying the sample, sealing and storing, and obtaining the impregnated Step 3, the immersed semi-coke is heated up, and carbon dioxide gas is used as an activator to activate, and the activated semi-coke-based activated carbon adsorption material is dried in vacuum and sealed. The semi-coke-based activated carbon adsorption material can effectively improve the removal efficiency of organic sulfur when applied to organic sulfur waste gas such as methyl mercaptan and carbonyl sulfide.

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 compound gas (VOCs) is a kind of harmful organic industrial waste gas, which is harmful to human body and environment. With the development of my country's industrialization and urbanization, especially the construction of sewage treatment plants, landfills and various chemical plants, odor pollution has become increasingly serious. In my country's odor pollutant emission standards (GB14554-93), methyl sulfide (DMS), methyl mercaptan, dimethyl disulfide (DMDS), hydrogen sulfide (H2S), ammonia (NH3), trimethylamine , styrene and carbon disulfide (CS2) are listed as priority pollutants. Among them, sulfur-containing organic odors account for a large share of odor pollution. Due to the low odor threshold, a wide range of industri...

Claims

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Application Information

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Patent Type & Authority Patents(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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