Composite activator for preparing high performance activated carbon and application thereof

A composite activator and activated carbon technology, which is applied in the fields of chemical industry and materials, to achieve the effect of overcoming low activation ability

Inactive Publication Date: 2018-11-30
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of raw materials potassium hydroxide and potassium carbonate determines the production technology economy of high-performance activated carbon, and the existing technology fails to solve the problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Referring to the method in Example 1 of Chinese invention patent application CN2018109163197 (2018-08-13), 210 g of a hydantoin-substituted phenolic resin matrix was prepared, wherein the carbon content was 60% and the oxygen content was 24%.

[0043] Mix 100g of it with 126g (1.2mol) of sodium carbonate, 174g (2.3mol) of potassium chloride, 5g of sodium stearate, 5g of sodium polyacrylate and 50g of deionized water, and crush the mixture to 100-200 mesh. The mixed material is extruded into pellets with a diameter of 5mm, and then dried at 110-150°C. Put the mixed material particles into a crucible, place it in a nitrogen-protected box-type high-temperature furnace, and raise the temperature to 650 °C at a heating rate of 10 °C / min, so that the mixed material is slowly thermally decomposed to form carbonized products. Further raise the temperature to 750-800°C and keep it warm for activation for 2 hours. After the activation is completed, cool down to room temperature n...

Embodiment 2

[0045] Refer to the method in Example 1 of Chinese invention patent application CN2018109163197 (2018-08-13) to prepare 150 g of methoxy-substituted phenolic resin precipitate, wherein the carbon content is 65% and the oxygen content is 29%.

[0046] Mix 100g of it with 225g (2.1mol) of sodium carbonate, 75g (1.0mol) of potassium chloride, 2g of sodium lauryl sulfate, 3g of sodium carboxymethylcellulose and 50g of deionized water, and crush the mixture to 100- 200 mesh. The mixed material is extruded into pellets with a diameter of 5mm, and then dried at 110-150°C. Put the mixed material particles into a crucible, place in a nitrogen-protected box-type high-temperature furnace, and raise the temperature to 650 °C at a heating rate of 10 °C / min, so that the mixed material is slowly thermally decomposed to form carbonized products. Further raise the temperature to 750-800°C and keep it warm for activation for 2 hours. After the activation is completed, cool down to room tempera...

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Abstract

The invention relates to a composite activator for preparing high-performance activated carbon, wherein the chemical composition is Na2CO3-nKC1, wherein n=0.5-2, the composite activator can be reducedby a carbide to produce potassium atoms and potassium oxide at 700-900 DEG C, the carbide is activated into activated carbon with a high specific surface area, after cooling, the composite activatoris dissolved and gradually impregnated with deionized water, the composite activator recovered by evaporation of an impregnation solution can be recycled, and the mass loss of the composite activatoris 5% to 15%. The composite activator is suitable for preparing the high performance activated carbon from a carbonaceous raw material having a carbon content of more than 60% and an oxygen content ofless than 30%. The composite activator only overcomes the shortage of high raw material cost of a potassium carbonate activator, but also overcomes the defect that the activation ability of a sodiumcarbonate activator is low, and the composite activator has great economic advantages when used for replacement of the potassium carbonate activator.

Description

technical field [0001] The invention relates to a composite activator for preparing high-performance activated carbon and its application, especially Na 2 CO 3 The application of the -nKC1 composite activator in the preparation of high-performance activated carbon belongs to the field of chemical industry and materials. Background technique [0002] Activated carbon is an environmentally friendly solid adsorbent. The annual output of activated carbon in China has reached more than 600,000 tons, which has basically met the needs of environmental protection, industrial production and daily life. The development of high-performance activated carbon with high specific surface area, adjustable porosity and low ash content urgently needed in the field of new energy and new materials, and the low-cost production of high-performance activated carbon from carbon-containing waste are the next development focus. Activated carbon can be divided into gas phase adsorbents, liquid phase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348
CPCC01B32/348
Inventor 李仕增李建生王雪刘炳光翟超尹浩南赵洋
Owner TIANJIN VOCATIONAL INST
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