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Catalyst using Al modified active carbon as carrier, and preparation method thereof

The technology of catalyst and activated carbon is applied in the field of synthesis gas methanation catalyst and preparation thereof, and achieves the effects of high reaction activity, good dispersion of active metals and simple preparation method

Active Publication Date: 2019-06-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art, the invention provides a synthesis gas methanation catalyst and a preparation method thereof, the catalyst uses Al-modified petroleum coke-based activated carbon as a carrier, which overcomes the high-temperature aggregation of active metals in the activated carbon carrier catalyst It has the advantages of good dispersion of active components, anti-sintering, high activity, and not easy to deposit carbon.

Method used

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  • Catalyst using Al modified active carbon as carrier, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Grind 100g of petroleum coke into powder, then mix it evenly with 5.06g of potassium metaaluminate and 200g of potassium hydroxide, place it in a microwave heating furnace with a microwave frequency of 2450MHz, and vacuum it under the condition of a microwave power of 0.2kw. Raise the temperature to 500°C and keep it constant for 40 minutes, then pass nitrogen gas to normal pressure, and continue to raise the temperature to 800°C for 20 minutes under the condition of microwave power of 0.2kw for activation. After activation, cool down to normal temperature, take out the obtained sample, place it in a drying oven, heat it to 80°C, and then mix it with deionized water at the same temperature. After stirring evenly, perform solid-liquid separation, repeat several times until the filtrate is neutral . The solid sample obtained after solid-liquid separation was placed in deionized water at 5°C, and after mixing evenly, the system was kept at 5°C for 4 hours, and then the sol...

Embodiment 2

[0043] Grind 100g of petroleum coke into powder, then mix it evenly with 6.77g of potassium metaaluminate and 300g of potassium hydroxide, place it in a microwave heating furnace with a microwave frequency of 2450MHz, and vacuum it under the condition of a microwave power of 0.3kw. Raise the temperature to 400°C and keep it constant for 60 minutes, then pass nitrogen gas to normal pressure, and continue to raise the temperature to 700°C for 30 minutes under the condition of microwave power of 0.3kw for activation. After activation, cool down to normal temperature, take out the obtained sample, place it in a drying oven, heat it to 80°C, and then mix it with deionized water at the same temperature. After stirring evenly, perform solid-liquid separation, repeat several times until the filtrate is neutral . The solid sample obtained after solid-liquid separation was placed in 8°C deionized water, and after mixing evenly, the system was kept at 8°C for 6 hours, and then solid-liqu...

Embodiment 3

[0046] Grind 100g of petroleum coke into powder, then mix it evenly with 9.94g of potassium metaaluminate and 300g of potassium hydroxide, place it in a microwave heating furnace with a microwave frequency of 2450MHz, and vacuum it under the condition of a microwave power of 0.4kw. Raise the temperature to 600°C and keep it constant for 10 minutes, then pass nitrogen gas to normal pressure, and continue to raise the temperature to 900°C for 10 minutes under the condition of microwave power of 0.4kw for activation. After activation, cool down to normal temperature, take out the obtained sample, place it in a drying oven, heat it to 90°C, and then mix it with deionized water at the same temperature. After stirring evenly, perform solid-liquid separation, repeat several times until the filtrate is neutral . The solid sample obtained after solid-liquid separation was placed in deionized water at 10°C. After mixing evenly, the system was kept at 10°C for 8 hours, and then the solid...

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Abstract

The invention provides a catalyst using Al modified active carbon as a carrier, and a preparation method thereof, wherein the catalyst comprises an active component, an auxiliary agent and a carrier,the active component is selected from Ni and Co, the auxiliary agent is one or a plurality of materials selected from rare earth elements, and the carrier is petroleum coke-based active carbon. The preparation method comprises: uniformly mixing petroleum coke, metaaluminate and an activator, activating, washing, separating to obtain a solid sample, introducing an active metal and an auxiliary agent into the obtained sample, washing, and drying to obtain a syngas methanation catalyst. According to the present invention, the obtained catalyst has advantages of good dispersion of the active component, high activity, less carbon deposition and the like, and further can solve the problem of high temperature aggregation of the active metal of the active carbon supported catalyst.

Description

technical field [0001] The invention relates to a synthesis gas methanation catalyst and a preparation method thereof, in particular to a synthesis gas methanation catalyst with Al-modified activated carbon as a carrier and a preparation method thereof. Background technique [0002] Methanation refers to CO / CO 2 with H 2 Under certain temperature, pressure and catalyst action, generate CH 4 At present, this reaction is widely used in the removal of trace carbon in the process of ammonia synthesis or hydrogen production, coke oven gas methanation, coal to natural gas and other processes. Methanation is an important catalytic technology, especially in fuel applications, where it can be used to increase the calorific value of gas, allowing the conversion of coke oven gas, coal or biomass to natural gas. In recent years, with the rapid development of my country's coal-based natural gas industry, methanation, one of the core technologies, has received more and more attention. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J23/75B01J23/755B01J23/78B01J23/83B01J35/10C10L3/08
Inventor 张舒冬孙晓丹张庆军宋永一刘继华
Owner CHINA PETROLEUM & CHEM CORP
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