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Method for preparing active carbon for refining petroleum product

A technology of petroleum products and activated carbon, which is applied in the field of preparation of natural carbon, can solve the problems of high cost and easy pollution, and achieve the effect of low cost, low pollution and excellent adsorption performance

Active Publication Date: 2012-01-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All chemical activation methods use activators, which are costly and easy to cause pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] After mixing 60% of the total weight of petroleum coke and 20% of coal, the powder is crushed into 100-200 mesh powder, and 5% of the pore-forming agent is added and stirred and mixed. The pore-forming agent is mixed with vacuum residue, ethylene cracking residue, and hydrocracking residue in a weight ratio of 1:1:1, and diluted by adding diesel oil.

[0028] Then add 15% of the binder and 5% of the total weight of water, stir, mix, knead, and shape to form a strip with a diameter of 3 mm, and then dry it. The binder is a mixture of oxidized asphalt and catalytic cracking oil slurry in a ratio of 2:1.

[0029] The molding material enters the carbonization process, the carbonization furnace is heated at a rate of 8°C / min, the carbonization temperature is controlled at 500°C, and the carbonization is performed for 7 hours. Then it enters the activation process, the temperature is raised at a rate of 15°C / min, the carbonization temperature is controlled at 950°C, and the activ...

Embodiment 2

[0034] After mixing 30% of the total weight of petroleum coke and 50% of coal, the powder is crushed into 100-200 mesh powder, and 10% of the pore former is added and stirred and mixed. The pore-forming agent is mixed with vacuum residue, ethylene cracking residue, and hydrocracking residue in a weight ratio of 1:1:1, and diluted by adding diesel oil.

[0035] Then add 10% of the binder and 5% of the total weight of water, stir, mix, knead, and shape to form a strip with a diameter of 3 mm, and then dry it. The binder is a mixture of coal tar pitch and catalytic cracking oil slurry in a ratio of 2:1.

[0036] The molding material enters the carbonization process, the carbonization furnace is heated at a rate of 10°C / min, the carbonization temperature is controlled at 480°C, and the carbonization is performed for 6 hours. Then enter the activation process, the temperature is raised at a rate of 10°C / min, the carbonization temperature is controlled at 900°C, and the activation proce...

Embodiment 3

[0041] 40% of the total weight of petroleum coke and 40% of coal are crushed into 100-200 mesh powder and then mixed uniformly, and 5% of the pore former is added and mixed. The pore-forming agent is mixed with vacuum residue, coking residue, and hydrocracking residue in a weight ratio of 1:1:1, and is diluted by adding diesel oil.

[0042] Then add 15% of the binder and 5% of the total weight of water, stir, mix, knead, and shape to form a strip with a diameter of 3 mm, and then dry it. The binder is made by mixing petroleum pitch, coal pitch and catalytic cracking oil slurry in a ratio of 1:1:1.

[0043] The molding material enters the carbonization process, the carbonization furnace is heated at a rate of 10°C / min, the carbonization temperature is controlled at 500°C, and the carbonization is performed for 7 hours. Then it enters the activation process, the temperature is raised at a rate of 15°C / min, the carbonization temperature is controlled at 950°C, and the activation is p...

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Abstract

The invention relates to a method for preparing active carbon for refining a petroleum product. The active carbon comprises the following raw materials in percentage by weight: 30 to 80 percent of petroleum coke, 10 to 60 percent of coal, 0.1 to 30 percent of pore-forming agent and 9.9 to 30 percent of adhesive, wherein the pore-forming agent is vacuum residuum, coked residuum, ethylene cracking residuum, hydro-cracking residuum or mixture thereof. The preparation method comprises the following steps of: mixing the petroleum coke and the coal uniformly, and crushing the petroleum coke and thecoal into 100 to 200 meshes; adding the pore-forming agent into the mixture, stirring the mixture till uniform mixing, and adding the adhesive into the mixture to perform stirring, mixing and kneading; controlling the carbonization temperature to be between 450 and 600 DEG C; and controlling the activation temperature to be between 750 and 1,000 DEG C, and introducing water vapor into the activated material at the speed of 1 to 2 kilograms per hour in each kilogram of activated material. The active carbon has the characteristics of low ash content, high strength, good adsorption performance and the like, and can be used for refining of the petroleum product, water treatment and the like.

Description

Technical field [0001] The invention relates to a method for preparing activated carbon from petroleum coke and coal as raw materials, in particular to a method for preparing carbon used for refining petroleum products. Background technique [0002] Activated carbon is an adsorbent widely used in industrial production and daily life. The raw materials for preparing activated carbon are generally coal raw materials, wood raw materials, petroleum coke, petroleum pitch, etc. Wood raw materials for the preparation of activated carbon are relatively scarce and expensive. Coal is a widely used raw material for preparing activated carbon. Chinese patent CN87100558A discloses a method for preparing granular activated carbon by using selected anthracite as raw materials, coal tar and pitch as binders, through forming, carbonization, and activation steps. This patent has high requirements for coal raw materials (ash content <5.5%), and the prepared activated carbon has a strength of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/08
Inventor 赵刚全瀛寰牛豫谭振明徐文清刘成林
Owner PETROCHINA CO LTD
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