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Method for preparing activated carbon and activated carbon

A technology for preparing activated carbon and activated carbon, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of high water content and poor adsorption effect of activated carbon, achieve low water content, excellent adsorption performance, and improve solubility Effect

Inactive Publication Date: 2017-03-15
过冬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the water content of the product obtained by it is high, is 8~10%, and the adsorption effect of activated carbon is also relatively poor, needs to be further improved

Method used

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  • Method for preparing activated carbon and activated carbon

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Experimental program
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Effect test

Embodiment 1

[0041] A method for preparing activated carbon, said method comprising the steps of:

[0042] (1) Material crushing: plant roots, stems or leaves are crushed into segmental materials with a length of 7 cm by the material crushing device;

[0043] (2) material activation: chemically activate the segmented material obtained in step (1);

[0044] (3) Material forming: the segmented material after the above-mentioned chemical activation is passed through the material forming device;

[0045] (4) Material carbonization: carbonize the above block material at 600°C for 5 hours through a carbonization furnace;

[0046] (5) Material cooling: cooling the above carbon block to 15-25°C;

[0047] (6) Broken carbon block: the cooled carbon block is broken to an amorphous granular carbon block with a diameter less than 2cm;

[0048] (7) Carbon block activation: activate the above-mentioned amorphous granular carbon block into activated carbon crude product by water vapor at a temperature ...

Embodiment 2

[0055] A method for preparing activated carbon, said method comprising the steps of:

[0056]The agricultural and forestry wastes with air-dried moisture in the range of 16-22% are manually fed into the shredding device, and shredded into segmented materials with a length of 1 cm. Material silo; control the feeding speed to make the crushed materials squeeze into blocks; the block materials are transported to the carbonization furnace silo by the belt conveyor; the formed block materials enter the carbonization furnace intermittently, and are carbonized in the carbonization furnace at a temperature of 700 ° C for 3 hours into charcoal blocks; the charcoal blocks are cooled to normal temperature by the water cooling system and then transported to the feed port of the crusher by the belt conveyor. The hoist is lifted to the silo of the activation furnace, and transported into the physical activated converter by the screw conveyor, and the activated carbon is activated by the phy...

Embodiment 3

[0060] A method for preparing activated carbon, said method comprising the steps of:

[0061] (1) Material crushing: Plant roots, stems or leaves are crushed into segmental materials with a length of 5 cm through the material crushing device;

[0062] (2) material activation: chemically activate the segmented material obtained in step (1);

[0063] (3) Material forming: the segmented material after the above-mentioned chemical activation is passed through the material forming device;

[0064] (4) Material carbonization: carbonize the above-mentioned bulk material at 650° C. for 4 hours through a carbonization furnace;

[0065] (5) Material cooling: cooling the above carbon block to 15-25°C;

[0066] (6) Broken carbon block: the cooled carbon block is broken to an amorphous granular carbon block with a diameter less than 2cm;

[0067] (7) Carbon block activation: activate the above-mentioned amorphous granular carbon block into activated carbon crude product by water vapor a...

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Abstract

The invention provides a method for preparing activated carbon and activated carbon. The method comprises the following steps of material smashing; material activating, wherein an activator used in the activating process is a mixture of diammonium phosphate, sodium bicarbonate, zinc chloride and triethanolamine; material forming; material carbonizing; material cooling; carbon block crushing, carbon block activating; acid pickling; water washing and drying. According to the technical scheme, a new way for treating agricultural and forestry waste in a green and environmental protection mode is provided, an activated carbon product with the economic benefit can be obtained, the water content of the activated carbon is 5%-7%, the iodine adsorption value of the activated carbon is 1,350 mg / g or above, and the methylene blue adsorption value is 17 mL or above.

Description

technical field [0001] The invention relates to the technical field of activated carbon preparation, in particular to a method for preparing activated carbon and the activated carbon. Background technique [0002] In the prior art, straw is an incidental product of agricultural production. As a large agricultural production country, my country’s annual output of straw can reach 700-800 million tons. Agricultural and forestry waste amounted to more than 1 billion tons. As a major agricultural province in China, Sichuan produces hundreds of millions of tons of agricultural and forestry waste every year. Every summer and autumn harvest, news of straw burning is constantly coming from all over the country. The city is shrouded in smog, and a large amount of PM2.5 suspended matter and other substances appear in the air. The visibility drops sharply, making it difficult to travel. Straw burning has been repeatedly banned. To solve the problem of straw burning, we should find a wa...

Claims

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Application Information

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IPC IPC(8): C01B32/324C01B32/348
Inventor 过冬
Owner 过冬