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Preparation method of plastic-biomass active carbon and prepared active carbon thereof

A biomass and activated carbon technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of increasing the preparation cost of shaped activated carbon, loss of specific surface area of ​​shaped activated carbon, and affecting adsorption and desorption performance, etc., to achieve large market applications Prospect, avoidance of loss of pore structure, effect of large iodine adsorption value

Inactive Publication Date: 2017-06-20
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the activated carbon is bonded and formed before high-temperature activation, then in the subsequent forming and activation process, a large amount of binder will have a negative impact on the formation of the pore structure inside the activated carbon, blocking or even preventing the formation and expansion of the internal pore size , resulting in the loss of a part of the specific surface area of ​​the activated carbon after activation, which affects the subsequent adsorption and desorption performance
[0008] At the same time, the organic chemical reagents used in large quantities on the one hand greatly increased the preparation cost of shaped activated carbon and increased the production burden; on the other hand, in the production process, it brought a lot of pollution treatment problems
When dealing with these pollution problems, it not only requires a lot of manpower and material resources, but also increases the production cost. Secondly, it also causes a lot of waste of water resources and the potential risk of leakage of organic reagents, burying a safety hazard for actual production.

Method used

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  • Preparation method of plastic-biomass active carbon and prepared active carbon thereof
  • Preparation method of plastic-biomass active carbon and prepared active carbon thereof
  • Preparation method of plastic-biomass active carbon and prepared active carbon thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A kind of preparation method of plastic-biomass activated carbon is characterized in that comprising the following steps:

[0037] Step 1, the raw materials are pulverized and mixed, and recycled polypropylene plastic, wood sawdust and anhydrous K 2 CO 3 Grind the raw materials to 35 mesh respectively, and then stir and mix for 2 minutes; the mixing rate of the mixture is ω=5%, the ratio of salt to material γ=1.0, and the water content is 15%; the mixing of solid activator and raw materials in the raw material crushing and screening mixing process It is dry mixing at room temperature and does not require long-term solution immersion. During the processing, storage and use of plastics, due to the combined effects of internal and external factors, their performance gradually deteriorates, so that they eventually lose their use value. Plastic aging is an irreversible change that is common to materials. However, waste aging plastics are highly brittle, and the degree of ...

Embodiment 2

[0051] Step 1, the raw materials are pulverized and mixed, and recycled polypropylene plastic, wood sawdust and anhydrous K 2 CO 3 Grind the raw materials to 40 mesh respectively, and then stir and mix for 2 minutes; the mixing ratio of the mixture is ω=30%, the ratio of salt to material γ=2.5, and the water content is 25%; the mixing of solid activator and raw materials in the process of crushing, screening and mixing of raw materials It is dry mixing at room temperature and does not require long-term solution immersion. During the processing, storage and use of plastics, due to the combined effects of internal and external factors, their performance gradually deteriorates, so that they eventually lose their use value. Plastic aging is an irreversible change that is common to materials. However, waste aging plastics are highly brittle, and the degree of pulverization after crushing is higher. Directly mixing recycled plastics into biomass materials to make activated carbon ...

Embodiment 3

[0066] Step 1, the raw materials are pulverized and mixed, and recycled polypropylene plastic, wood sawdust and anhydrous K 2 CO 3 Grind the raw materials to 40 mesh respectively, and then stir and mix for 2 minutes; the mixing rate of the mixture is ω=5%, the ratio of salt to material γ=2.0, and the water content is 20%; the mixing of solid activator and raw materials in the raw material crushing and screening mixing process It is dry mixing at room temperature and does not require long-term solution immersion. During the processing, storage and use of plastics, due to the combined effects of internal and external factors, their performance gradually deteriorates, so that they eventually lose their use value. Plastic aging is an irreversible change that is common to materials. However, waste aging plastics are highly brittle, and the degree of pulverization after crushing is higher. Directly mixing recycled plastics into biomass materials to make activated carbon can recycl...

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Abstract

The invention discloses a preparation method of plastic-biomass active carbon and prepared active carbon thereof. The method comprises the steps of crushing and mixing raw materials, forming particles, activating, washing with acid and drying. Through the preparation method, waste recycled plastics, biomass materials and solid activating agents are prepared into plastic-biomass active carbon. Compared with the prior art, the preparation method of plastic-biomass active carbon has the advantages that a novel path of recycling and reusing urban and rural garbage, the water pollution caused by chemical reagents is greatly reduced, and the resources are saved; the prepared formed active carbon has a larger BET specific surface area and a high iodine sorption value, shows abundant pore structure and has a great market application prospect.

Description

technical field [0001] The invention relates to the technical field of activated carbon preparation, in particular to a method for preparing plastic-biomass activated carbon and the obtained activated carbon. Background technique [0002] At present, my country will produce a large amount of plastic waste and urban and rural biomass waste every year, most of which are disposed of by local burial and open-air incineration, which not only causes a great waste of resources, but also brings damage to the land and atmospheric environment. Great pressure. [0003] Activated carbon is widely used in industrial fields. Under normal circumstances, due to the strong physical adsorption capacity of biomass activated carbon, it is green and environmentally friendly during use. Widely used in chemical industry, pesticide industry, oil refining industry, civil environmental protection, food and beverage, motor vehicle supporting, aerospace and new energy and other fields. [0004] The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348C01B32/324
CPCC01P2004/03C01P2006/12C01P2006/14C01P2006/16C01P2006/90
Inventor 马培勇武晋州邢献军张贤文吴东强郭晓微
Owner HEFEI UNIV OF TECH
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