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Activated carbon articles and compositions and process for producing the same

A technology of activated carbon and composition, applied in the field of activated carbon products and compositions containing the same, and can solve problems such as poor efficiency

Inactive Publication Date: 2015-03-18
MILLIKEN & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this reduction in effective pore volume means that per kilogram of activated carbon used in the process is less efficient than when the activated carbon does not adsorb water vapor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This example demonstrates the preparation of activated carbon particles and compositions according to the invention.

[0053] About fifty grams (50 g) of powdered activated carbon suitable for use in the activated carbon infusion process was dried at a temperature of about 150° C. for several hours and allowed to cool in a glass desiccator. The activated carbon was then sprayed with two grams (2 g) of Unidyne TG 5601 (available from Daikin Industries, Ltd, believed to be silicone modified C 6 Fluorocarbon protective agent dispersion) 50% solution. The solution was manually sprayed onto the activated carbon in an atomized form and the activated carbon was manually mixed after each actuation of the sprayer to ensure more uniform coverage of the particles with the fluorocarbon repellant. After application of the fluorocarbon repellant, the powdered activated carbon is then mechanically mixed with powdered ammonium bromide in an amount of about 2-3 wt% based on the weight ...

Embodiment 2

[0055] This example demonstrates the preparation of activated carbon particles and compositions according to the invention.

[0056]About fifty grams (50 g) of powdered activated carbon suitable for use in the activated carbon infusion process was dried at a temperature of about 150° C. for several hours and allowed to cool in a glass desiccator. The activated carbon was then sprayed with a treatment composition made by combining a 50% solution of Unidyne TG 5601 with a 40% solution of sodium bromide in water in a weight ratio of about 1:2. The resulting treatment composition was manually sprayed onto the activated carbon in an atomized form, and the activated carbon was manually mixed after each actuation of the sprayer to ensure more uniform coverage of the particles with the treatment composition. The treatment composition was applied to the powdered activated carbon in an amount sufficient to achieve a sodium bromide loading of about 2 to 3 wt%, based on the weight of the ...

Embodiment 3

[0058] This example demonstrates the preparation of activated carbon particles and compositions according to the invention.

[0059] About fifty grams (50 g) of powdered activated carbon suitable for use in the activated carbon infusion process was dried at a temperature of 150° C. for several hours and allowed to cool in a glass desiccator. The activated carbon was then sprayed with a 40% aqueous solution of sodium bromide. The solution was manually sprayed onto the activated carbon in an atomized form, and the activated carbon was manually mixed after each actuation of the sprayer to ensure a more uniform coverage of the particles with the sodium bromide solution. The solution was applied to the powdered activated carbon in an amount sufficient to achieve a sodium bromide loading of about 2-3 wt%, based on the weight of the powdered activated carbon. After application of the sodium bromide solution, the activated carbon was then sprayed with approximately two grams (2 g) of...

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Abstract

An article comprises an activated carbon core, a hydrophobic agent, and a mercury oxidation facilitation agent. A composition comprises a plurality of activated carbon particles, a hydrophobic agent, and a mercury oxidation facilitation agent. A process for producing treated activated carbon particles comprises the steps of providing activated carbon particles, providing a hydrophobic agent, providing a mercury oxidation facilitation agent, and applying the hydrophobic agent and the mercury oxidation facilitation agent to at least a portion of the activated carbon particles.

Description

field of invention [0001] This application relates to activated carbon articles and compositions comprising the same. The articles and compositions described herein are believed to be suitable for use as chemisorbents in industrial processes. The present application also relates to methods of making activated carbon particles and compositions comprising such particles. Background technique [0002] Activated carbon is known to be particularly effective as a chemical adsorbent. Due to this property, activated carbon is used as an adsorbent in a variety of industrial processes. For example, the EPA and various other agencies have researched and advocated the use of activated carbon to treat flue gases produced during the combustion of coal, such as those produced in coal-fired power plants. Known as "activated carbon injection," the method has been touted as a very effective way to reduce the mercury emissions that often accompany coal combustion. [0003] Although the ben...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08B01J20/20B01D53/64
CPCB01J20/327B01D2253/102B01J20/3204B01J20/3234B01D2255/2073B01D2257/602B01J20/3293B01J20/3285B01J20/28016B01J20/3236B01J20/28064B01D2258/0283B01D2251/108B01D53/8665B01D2253/25B01D2253/306B01J20/20B01D2255/20723B01D2251/10C01B31/084B01D2253/3425B01D53/02C01P2006/12B01D2255/2065B01J20/3246B01J20/3272B01D2255/20738B01D2255/20761C01B32/372
Inventor S.李C.德索扎
Owner MILLIKEN & CO
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