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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 effects of low cost, low pollution and low ash content

Active Publication Date: 2010-09-22
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] Mix 60% of petroleum coke and 20% of coal in the total weight, crush it into 100-200 mesh powder, add 5% of pore-forming agent, stir and mix. The pore-forming agent is prepared by mixing vacuum residue, ethylene cracking residue, and hydrocracking residue in a weight ratio of 1:1:1, and adding diesel oil for dilution.

[0028] Then add 15% of binder and 5% of the total weight of water, stir and mix, knead and shape to make a strip with a diameter of 3 mm, and then air-dry. The binder is made by mixing oxidized bitumen and catalytic cracking oil slurry in a ratio of 2:1.

[0029] The molding material enters the carbonization process, the carbonization furnace heats up at a rate of 8°C / min, the carbonization temperature is controlled at 500°C, and the carbonization is carried out for 7 hours. Then enter 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 performed for 5 hours...

Embodiment 2

[0034] After mixing 30% of petroleum coke and 50% of coal by weight, it is crushed into 100-200 mesh powder, and 10% of pore-forming agent is added to stir and mix. The pore-forming agent is prepared by mixing vacuum residue, ethylene cracking residue, and hydrocracking residue in a weight ratio of 1:1:1, and adding diesel oil for dilution.

[0035] Then add 10% of binder and 5% of the total weight of water, stir and mix, knead and shape to make a strip with a diameter of 3 mm, and then air-dry. The binder is formed by mixing 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 heats up at a rate of 10°C / min, the carbonization temperature is controlled at 480°C, and the carbonization is carried out 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 activated for 6 hours....

Embodiment 3

[0041] Crushing 40% of petroleum coke and 40% of coal in the total weight into 100-200 mesh powders and then mixing them evenly, adding 5% of pore-forming agent and stirring and mixing. The pore-forming agent is prepared by mixing vacuum residual oil, coking residual oil and hydrocracking residual oil in a weight ratio of 1:1:1, and adding diesel oil for dilution.

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

[0043] The molding material enters the carbonization process, the carbonization furnace heats up at a rate of 10°C / min, the carbonization temperature is controlled at 500°C, and the carbonization is carried out for 7 hours. Then enter the activation process, the temperature is raised at a rate of 15°C / min, the carbonization temperature is ...

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PUM

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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 the coal 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, in particular to a method for preparing activated 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. Woody raw materials for preparing activated carbon are relatively scarce and expensive. Coal is widely used as a raw material for the preparation of activated carbon. Chinese patent CN87100558A discloses a method for preparing granular activated carbon by using selected anthracite as raw material, coal tar and pitch as binder, and forming, carbonizing, and activating processes. This patent has high requirements on coal raw materials (ash content<5.5%), and the prepared activated carbon has a strength of abou...

Claims

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Application Information

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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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