Activated carbon capable of deeply purifying drinking water and preparation method for activated carbon

A technology of activated carbon and water purification, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve problems such as ineffective utilization of coal tar resources, complex production process, high production cost, etc. High, large adsorption capacity, good mechanical strength

Active Publication Date: 2014-01-01
CCTEG CHINA COAL RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The production of columnar activated carbon has the following problems: 1. The production process is complicated, the crushing yield is low, and the production cost is relatively high; 2. Since coal tar must be used as a binder, coal tar resources cannot be effectively used, and the production process has an impact on the environment. Big
The raw coal directly crushed activated carbon produced by this method has the disadvantages of light stack specific gravity and low mechanical strength.
[0008] Activated carbon prepared by the above two methods is used for deep purification of drinking water, and it is difficult to provide standard drinking water under the condition of a long service life.
There is no special activated carbon for deep purification of drinking water in China. In foreign countries, briquette crushed activated carbon is mainly used for drinking water purification.

Method used

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  • Activated carbon capable of deeply purifying drinking water and preparation method for activated carbon

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, the preparation of activated carbon for deep water purification

[0030] (1) Crushing and pulverizing: crush the weakly caking coal into a particle size of 5-7mm, and then pulverize through a ball mill to obtain powder, and the particle size after pulverization reaches more than 99% and passes through 200 mesh;

[0031] (2) Briquetting molding: mix the powder obtained above with NaOH and KCl evenly, wherein the mass-number ratio of NaOH, KCl and weakly caking coal is 0.1:0.05:100, and use double-roller high-pressure molding equipment Carry out dry briquetting molding to mixed powder under 20MPa pressure to obtain briquette;

[0032] (3) Carbonization: Carbonize the briquette material with the qualified particle size obtained above in a multi-chamber furnace to obtain carbonized material. The final temperature of carbonization is 550° C., the carbonization time is 5 hours, and the heating rate is controlled to be 4° C. / min;

[0033] (4) Activation: Activat...

Embodiment 2

[0035] Embodiment 2, the preparation of activated carbon for deep water purification

[0036] (1) Crushing and pulverizing: crush the weak caking coal into a particle size of 5-7mm, and then pulverize through a ball mill to obtain powder, and the particle size after pulverization reaches more than 99% and passes through 200 mesh;

[0037] (2) Briquette molding: mix the powder obtained above with NaOH and KNO 3 Evenly mixed mixed powder, in which NaOH, and KNO 3 The mass / number ratio of the weakly caking coal is 0.05:0.05:100, and the mixed powder is dry-pressed into a briquette under a pressure of 30 MPa using a double-roller high-pressure forming device to obtain a briquette;

[0038] (3) Carbonization: Carbonize the briquette material with the qualified particle size obtained above in a multi-chamber furnace to obtain a carbonized material. The final temperature of carbonization is 650° C., the carbonization time is 2 hours, and the heating rate is controlled to be 10° C. / m...

Embodiment 3

[0041] Embodiment 3, the preparation of activated carbon for deep water purification

[0042] (1) Crushing and pulverizing: crush the weak caking coal into a particle size of 5-7mm, and then pulverize through a ball mill to obtain powder, and the particle size after pulverization reaches more than 99% and passes through 200 mesh;

[0043] (2) Briquette forming: mix the powder obtained above with KOH and NaNO 3 Mixed homogeneous mixed powder, in which KOH and NaNO 3 The mass / number ratio of the weakly caking coal is 1.0:0.05:100, and the mixed powder is dry-pressed into a briquette under a pressure of 50 MPa using a double-roller high-pressure forming equipment to obtain a briquette;

[0044] (3) Carbonization: Carbonize the above-mentioned briquettes with qualified particle sizes in a multi-chamber furnace to obtain carbonized materials. The final temperature of carbonization is 600° C., the carbonization time is 3 hours, and the heating rate is controlled to be 6° C. / min;

...

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Abstract

The invention discloses activated carbon capable of deeply purifying drinking water and a preparation method for the activated carbon. The method comprises the following steps of: (1) mixing crushed and ground weakly caking coal and an additive to obtain a mixture, and performing briquetting molding on the mixture to obtain a briquetted material, wherein the additive is selected from at least two of NaOH, KOH, NaNO3, KNO3 and KCl; (2) carbonizing the briquetted material to obtain a carbonized product; and (3) activating the carbonized product to obtain the activated carbon. The activated carbon provided by the invention has a special function of deeply purifying the drinking water, so that blanks in China are filled, and a new product is added to functional type activated carbon products; and the preparation method provided by the invention is simple, has industrial operability, belongs to low-cost and high-performance products and has higher economic value and a better social significance.

Description

technical field [0001] The invention relates to an activated carbon and a preparation method thereof, in particular to an activated carbon for deeply purifying drinking water and a preparation method thereof. Background technique [0002] my country is currently one of the 13 countries with the poorest water in the world. According to the latest "China Environmental Performance Evaluation" report released by the Organization for Economic Cooperation and Development, more than 75% of the water flowing through Chinese cities is not suitable for drinking, and more than 30% The water quality of the detected river belongs to the inferior V category. With the development of industry, the degree of pollution of urban drinking water sources is increasing. At the same time, with the improvement of living standards, people's requirements for drinking water quality and drinking water quality standards are becoming more and more stringent. [0003] Due to its large specific surface area...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20C01B31/08C02F1/28
Inventor 王鹏梁大明孙仲超吴涛李艳芳傅翔熊银武董卫果文芳李兰廷李雪飞
Owner CCTEG CHINA COAL RES INST
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