Method for preparing activated carbon by oil fluid coke

Abstract

The invention relates to a method for preparing activated carbon by oil fluid coke and belongs to the field of oil waste deep processing. The method is characterized by adding the oil fluid coke and KOH (potassium hydroxide) reagents in a certain proportion into surfactants in a certain volume at the room temperature with sufficient stirring, filling uniformly stirred mixed reactant into a reactor, subjecting the mixed reactant to a certain temperature-rising reaction process with the protection of nitrogen, cooling to the room temperature after reaction is finished, taking out the reactant for washing, performing suction filtration and drying to obtain the oil coked activated carbon. The oil-coke-based activated carbon prepared by the method is large in specific surface area and total pore volume and low in sulfur content, and the method is simple in preparation process and available to raw materials.

Description

technical field

[0001] The invention relates to a method for preparing activated carbon by using petroleum fluidized coke, which belongs to the field of deep processing of petroleum waste. Background technique

[0002] Petroleum coke is a solid product obtained by upgrading the heavy components of petroleum during petroleum processing. There are two types of delayed coke and fluidized coke according to the upgrading process. Petroleum fluidized coke has the characteristics of low volatile matter, high C / H, high bulk density and high sulfur content, and low reactivity and combustibility. Although it has high carbon content and low ash content, it has a potential high calorific value, but it cannot be directly used as a solid fuel due to its high sulfur content. At present, a large amount of fluidized coke produced by various oil sand refining companies is only stored in the open air. How to use such high-sulfur carbon resources cleanly and efficiently is one of the urgent p...

Examples

Embodiment 1

[0014] Weigh 50g of petroleum fluidized coke and 25g of KOH reagent and add it to 7.5mL of ethanol solution at room temperature and stir thoroughly. The uniformly stirred mixed reactant is loaded into the reactor, and the temperature rise reaction is started under the protection of nitrogen: constant temperature at 80°C Preheat for 2 hours, use a heating rate of 8°C / min in the temperature range of 80-350°C, and keep the temperature at 350°C for 2 hours; then use 6°C / min to rise to 600°C, 5°C / min to 750°C, 2.5°C / min Min was raised to 850°C, and kept at 850°C for 1.5h. After the reaction was completed, nitrogen gas was continued until the reactant was cooled to room temperature. Take out the reaction product for washing: wash with water until pH<1l, then use a hydrochloric acid solution with a volume ratio of 1:5 for 60 minutes of acid washing per 50g of petroleum fluidized coke / 300mL solution, and then wash with water until neutral. After washing, filter with suction and fully...

Embodiment 2

[0016] Weigh 50g of petroleum fluidized coke and 50g of KOH reagent and add them to 7.5mL of ethanol solution at room temperature and stir thoroughly. The uniformly stirred mixed reactant is loaded into the reactor, and the temperature rise reaction is started under the protection of nitrogen: constant temperature at 80°C Preheat for 2 hours, use a heating rate of 8°C / min in the temperature range of 80-350°C, and keep the temperature at 350°C for 2 hours; then use 6°C / min to rise to 600°C, 5°C / min to 750°C, 2.5°C / min Min was raised to 850°C, and kept at 850°C for 1.5h. After the reaction was completed, nitrogen gas was continued until the reactant was cooled to room temperature. Take out the reaction product for washing: wash with water until pH<1l, then use a hydrochloric acid solution with a volume ratio of 1:5 for 60 minutes of acid washing per 50g of petroleum fluidized coke / 300mL solution, and then wash with water until neutral. After washing, filter with suction and ful...

Embodiment 3

[0018] Weigh 75g of petroleum fluidized coke and 25g of KOH reagent and add it to 7.5mL of acetone solution at room temperature and stir thoroughly. The uniformly stirred mixed reactant is loaded into the reactor, and the temperature rise reaction is started under the protection of nitrogen: constant temperature at 80°C Preheat for 2 hours, use a heating rate of 8°C / min in the temperature range of 80-350°C, and keep the temperature at 350°C for 2 hours; then use 6°C / min to rise to 600°C, 5°C / min to 750°C, 2.5°C / min Min was raised to 850°C, and kept at 850°C for 1.5h. After the reaction was completed, nitrogen gas was continued until the reactant was cooled to room temperature. Take out the reaction product for washing: wash with water until pH<1l, then use a hydrochloric acid solution with a volume ratio of 1:5 for 60 minutes of acid washing per 50g of petroleum fluidized coke / 300mL solution, and then wash with water until neutral. After washing, filter with suction and fully...

technical field

[0001] The invention relates to a method for preparing activated carbon by using petroleum fluidized coke, which belongs to the field of deep processing of petroleum waste. Background technique

[0002] Petroleum coke is a solid product obtained by upgrading the heavy components of petroleum during petroleum processing. There are two types of delayed coke and fluidized coke according to the upgrading process. Petroleum fluidized coke has the characteristics of low volatile matter, high C / H, high bulk density and high sulfur content, and low reactivity and combustibility. Although it has high carbon content and low ash content, it has a potential high calorific value, but it cannot be directly used as a solid fuel due to its high sulfur content. At present, a large amount of fluidized coke produced by various oil sand refining companies is only stored in the open air. How to use such high-sulfur carbon resources cleanly and efficiently is one of the urgent p...

Examples

Embodiment 1

[0014] Weigh 50g of petroleum fluidized coke and 25g of KOH reagent and add it to 7.5mL of ethanol solution at room temperature and stir thoroughly. The uniformly stirred mixed reactant is loaded into the reactor, and the temperature rise reaction is started under the protection of nitrogen: constant temperature at 80°C Preheat for 2 hours, use a heating rate of 8°C / min in the temperature range of 80-350°C, and keep the temperature at 350°C for 2 hours; then use 6°C / min to rise to 600°C, 5°C / min to 750°C, 2.5°C / min Min was raised to 850°C, and kept at 850°C for 1.5h. After the reaction was completed, nitrogen gas was continued until the reactant was cooled to room temperature. Take out the reaction product for washing: wash with water until pH<1l, then use a hydrochloric acid solution with a volume ratio of 1:5 for 60 minutes of acid washing per 50g of petroleum fluidized coke / 300mL solution, and then wash with water until neutral. After washing, filter with suction and fully...

Embodiment 2

[0016] Weigh 50g of petroleum fluidized coke and 50g of KOH reagent and add them to 7.5mL of ethanol solution at room temperature and stir thoroughly. The uniformly stirred mixed reactant is loaded into the reactor, and the temperature rise reaction is started under the protection of nitrogen: constant temperature at 80°C Preheat for 2 hours, use a heating rate of 8°C / min in the temperature range of 80-350°C, and keep the temperature at 350°C for 2 hours; then use 6°C / min to rise to 600°C, 5°C / min to 750°C, 2.5°C / min Min was raised to 850°C, and kept at 850°C for 1.5h. After the reaction was completed, nitrogen gas was continued until the reactant was cooled to room temperature. Take out the reaction product for washing: wash with water until pH<1l, then use a hydrochloric acid solution with a volume ratio of 1:5 for 60 minutes of acid washing per 50g of petroleum fluidized coke / 300mL solution, and then wash with water until neutral. After washing, filter with suction and ful...

Embodiment 3

[0018] Weigh 75g of petroleum fluidized coke and 25g of KOH reagent and add it to 7.5mL of acetone solution at room temperature and stir thoroughly. The uniformly stirred mixed reactant is loaded into the reactor, and the temperature rise reaction is started under the protection of nitrogen: constant temperature at 80°C Preheat for 2 hours, use a heating rate of 8°C / min in the temperature range of 80-350°C, and keep the temperature at 350°C for 2 hours; then use 6°C / min to rise to 600°C, 5°C / min to 750°C, 2.5°C / min Min was raised to 850°C, and kept at 850°C for 1.5h. After the reaction was completed, nitrogen gas was continued until the reactant was cooled to room temperature. Take out the reaction product for washing: wash with water until pH<1l, then use a hydrochloric acid solution with a volume ratio of 1:5 for 60 minutes of acid washing per 50g of petroleum fluidized coke / 300mL solution, and then wash with water until neutral. After washing, filter with suction and fully...

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