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Carbonaceous material, method for producing same, filter for water purification and water purifier

A technology of carbonaceous materials and manufacturing methods, applied in separation methods, filtration separation, other chemical processes, etc., can solve problems such as removal

Pending Publication Date: 2021-11-30
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among the substances to be removed, turbidity and soluble lead can be removed by activated carbon, but it is difficult to effectively remove VOCs such as trihalomethane with a small molecular size and 2-MIB with a large molecular size with a single activated carbon.

Method used

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  • Carbonaceous material, method for producing same, filter for water purification and water purifier
  • Carbonaceous material, method for producing same, filter for water purification and water purifier
  • Carbonaceous material, method for producing same, filter for water purification and water purifier

Examples

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Effect test

Embodiment 1

[0143] The particle size of coconut shell charcoal obtained by carbonizing coconut shells from the Philippines was adjusted from 10 mesh (1.7mm) to 30 mesh (0.5mm). 1kg of this coconut shell charcoal is dropped into a fluidized bed activation furnace heated to 900°C, a fluidizing gas with 15% by volume of water vapor and 11% by volume of carbon dioxide is introduced from the hearth at 50L / min, and oxygen is introduced from the side of the furnace. Oxygen-containing gas of 0.5% by volume and 99.5% by volume of nitrogen was introduced at 5 L / min, and activation treatment was carried out until the amount of benzene adsorption reached about 35% by weight (the oxygen concentration in the total gas introduced into the fluidized bed activation furnace was about 0.045 capacity%). As the fluidized bed activation furnace, a furnace provided with a gas dispersion layer on the upstream side in the furnace when viewed from the main flow direction Z of the fluidization gas was used. In add...

Embodiment 2

[0146]A carbonaceous material was obtained in the same manner as in Example 1, except that the particle size of the coconut shell charcoal before the activation treatment was adjusted from 30 mesh (0.5 mm) to 60 mesh (0.25 mm). Table 1 shows the processing conditions and the physical property values ​​of the obtained carbonaceous materials.

Embodiment 3

[0148] A carbonaceous material was obtained in the same manner as in Example 2, except that the concentration of the oxygen-containing gas introduced during the activation treatment was changed to 0.05% by volume of oxygen and 99.95% by volume of nitrogen. Table 1 shows the processing conditions and the physical property values ​​of the obtained carbonaceous materials.

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PUM

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Abstract

One aspect of the present invention relates to a carbonaceous material which has a benzene adsorption of 25-40% and a vitamin B12 adsorption of 13.0-50.0 mg / g, while having a pore volume of mesopores of 0.070-0.150 cm3 / g as calculated from the nitrogen adsorption isotherm by means of a BJH method.

Description

technical field [0001] The present invention relates to carbonaceous materials. Furthermore, it also relates to the manufacturing method of a carbonaceous material, the filter for water purification using a carbonaceous material, and a water purifier. Background technique [0002] In recent years, the degree of concern about the safety and sanitation of tap water quality has been increasing day by day. It is expected to remove VOC (volatile organic compounds) such as free residual chlorine and trihalomethanes contained in tap water, and 2-chloro-4,6-di Pesticides represented by ethylamino-1,3,5-triazine (CAT), moldy odor represented by 2-methylisoborneol (2-MIB) and other harmful substances. [0003] In the Household Goods Quality Labeling Law, 13 substances to be removed are specified for water purifiers, namely: free residual chlorine, turbidity, chloroform, bromodichloromethane, dibromochloromethane, bromoform, tetrachloroethylene, trichloroethylene, 1,1,1-Trichloroetha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/30C01B32/336B01J20/20B01J20/28B01J20/30C02F1/28
CPCB01D35/00B01J20/20B01J20/28B01J20/30B01J20/2808B01J20/28057B01J20/3078C02F1/283C02F2101/322C01B32/05B01D39/1615B01D39/163B01D2239/0407B01D2239/0442B01D2239/065B01D2239/1241B01J20/28071B01J20/28064B01J20/28066B01D39/2055B01D39/2062C01B32/30C01B32/312C01B32/336C01P2006/12C01P2006/14C01P2006/16C02F1/28
Inventor 石田修一花本哲也吉延宽枝
Owner KURARAY CO LTD