Preparation method of special activated carbon used for carbon canister of automobile or motorcycle

A motorcycle and activated carbon technology, applied in the field of activated carbon, can solve the problems of low butane working capacity, high ash content, etc., and achieve the effect of reasonable pore size distribution, low cost and high adsorption value

Inactive Publication Date: 2013-01-30
南京正森环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of raw coal in this process, the special activated carbon produced for carbon tanks has low butane working capacity and high ash content, which cannot meet the requirements of activated carbon used in current carbon tanks.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 100g of low-ash anthracite and petroleum coke according to the weight ratio of 1:1, crush to 200 mesh, add 30wt% coal tar, stir evenly in a heated mixer, and extrude to a diameter of 1.5mm and a length of 2mm Small columnar shape, after drying in a cool place, put the molding material into the carbonization furnace for carbonization, and the carbonization temperature is 500°C to obtain the carbonized material. Soak the carbonized material in an aqueous solution of KOH (the weight ratio of KOH and water is 1:5), and the weight ratio of the carbonized material to the alkaline aqueous solution is 1:1. The soaking time is 3 hours, then filter and dry, put it into the activation furnace, raise the temperature to 600°C at a heating rate of 5°C / min and keep it for 2 hours, take it out and cool it naturally, and make special activated carbon for automobile and motorcycle canisters.

[0030] The measured butane working capacity (Butane WorKing Capacity) reaches 11.5g / 100mL...

Embodiment 2

[0032] Weigh 100g of low-ash anthracite and petroleum coke according to a weight ratio of 1:1, crush them to 200 mesh, add 20wt% coal tar, stir evenly in a heated stirrer, and extrude to a diameter of 1.5mm and a length of 7mm Small columnar shape, after drying in the shade, put the molding material into the carbonization furnace for carbonization, and the carbonization temperature is 600°C to obtain the carbonized material. Soak the carbonized material in an aqueous solution of KOH (the weight ratio of KOH and water is 1:65), and the weight ratio of the carbonized material to the alkaline aqueous solution is 1:1. The soaking time is 3 hours, then filter and dry, put it into the activation furnace, raise the temperature to 700°C at a rate of 1°C / min and keep it for 2 hours, take it out and let it cool naturally to obtain special activated carbon for automobile and motorcycle canisters.

[0033] The measured butane working capacity (Butane WorKing Capacity) reaches 13.5g / 100mL,...

Embodiment 3

[0035] Weigh 100g of low-ash anthracite and petroleum coke according to a weight ratio of 1:1, crush them to 200 mesh, add 35wt% coal tar, stir evenly in a heated stirrer, and extrude to a diameter of 2.5mm and a length of 5mm Small columnar shape, after drying in the shade, put the molding material into the carbonization furnace for carbonization, and the carbonization temperature is 700°C to obtain the carbonized material. Soak the carbonized material in an aqueous solution of KOH, and the weight ratio of the carbonized material to the alkaline aqueous solution is 1:1. The soaking time is 4 hours, then filter and dry, put it in the activation furnace, raise the temperature to 750°C at a heating rate of 5°C / min and keep it for 2 hours, take it out and let it cool naturally to obtain special activated carbon for automobile and motorcycle canisters.

[0036] The measured butane working capacity (Butane WorKing Capacity) reaches 16g / 100mL, the carbon tetrachloride adsorption rat...

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Abstract

The invention discloses a preparation method of special activated carbon used for a carbon canister of an automobile or a motorcycle, and the method comprises the following steps of: mixing petroleum coke and coal, crushing the mixture, adding tar into the crushed mixture, evenly mixing, and extruding into small column shapes; drying at the shade place, and then carrying out carbonization at 500-700 DEG C to obtain a carbonized material; soaking the carbonized material into an alkali solution for 2-8 hours; placing the soaked carbonized material into an activating oven, filling inert gas into the activating oven, and heating up to 600-900 DEG C at the speed of 1-5 DEG C/min; and carrying out heat preservation activation for 1-3 hours, taking out the product and naturally cooling to obtain the special activated carbon used for the carbon canister of the automobile or the motorcycle. The special activated carbon used for the carbon canister of the automobile or the motorcycle is easy in raw material acquisition, low in cost and high in demercuration efficiency. The activated carbon meets the harsh working conditions of the carbon canister, and has the obvious characteristics of high adsorption value, high strength and low ash content. The preparation method is also suitable for recovering oil gas in places such as the petrochemical industry and a gas station. The product is reasonable in pore size distribution, and can be used for realizing maximum adsorption and desorption.

Description

technical field [0001] The invention belongs to the technical field of activated carbon, and in particular relates to a preparation method of activated carbon specially used for carbon tanks of automobiles and motorcycles. Background technique [0002] At present, people's requirements for environmental protection are getting higher and higher, and activated carbon is being used more and more widely as an adsorbent. [0003] With the rapid development of the economy, the improvement of the economic level and the rapid development of the automobile industry, the number of motor vehicles in my country is also increasing rapidly. The amount of waste is also increasing with the increase of vehicles year by year. Pollution problems also plague our lives. The greenhouse effect and harmful gas emissions caused by motor vehicle exhaust pollution are affecting our health and living environment. Therefore, the governments of various countries have successively issued environmental pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C01B32/336
Inventor 荀波
Owner 南京正森环保科技有限公司
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