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A kind of activated carbon for storing natural gas and its preparation method

A technology of activated carbon and natural gas, which is applied in the field of activated carbon, can solve the problems of inapplicable wet storage natural gas storage and the reduction of the ability of activated carbon to absorb natural gas, and achieve the effects of being suitable for industrial production, improving gas storage capacity, and suppressing by-products

Active Publication Date: 2021-01-15
FUJIAN XINSEN CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

C contained in natural gas 2 It will be adsorbed by activated carbon and cannot be desorbed at normal temperature and pressure. After long-term use, the ability of activated carbon to adsorb natural gas will be reduced. The use of wet storage method can effectively avoid the above problems, but the existing structure of activated carbon is mainly obtained by improving the original adsorption method. , not suitable for storage of natural gas by wet storage method

Method used

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Examples

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preparation example Construction

[0013] The invention provides a kind of preparation method for the activated carbon of storing natural gas, comprises the following steps:

[0014] Step 1. Clean the coconut shell, sawdust and bamboo chips, dry them, mix them, and crush them through an 80-mesh sieve, then add volcanic ash, mix them evenly, and then carbonize at 550-650°C to obtain the first product;

[0015] Step 2. Add 0.05% perchloric acid solution to the first product, soak for 8-12 hours, rinse with deionized water until the effluent is neutral, add a solution containing phosphoric acid and ferrous sulfate after washing, and soak for 24 hours to obtain the first product Second product;

[0016] Step 3, the second product is dried at 80-100°C for 4-8h, rinsed with deionized water after cooling, activated at 350-450°C for 1-4h in a nitrogen atmosphere, and cooled to obtain activated carbon for storing natural gas.

[0017] The present invention also provides an activated carbon used for storing natural gas,...

Embodiment 1

[0029] A preparation method for activated carbon for storing natural gas, comprising the following steps:

[0030] Step 1. Clean the coconut shell, sawdust and bamboo chips, dry them, mix them, and crush them through an 80-mesh sieve, then add volcanic ash, mix well, and heat up to 550°C at a rate of 12°C per minute for 8 hours to obtain the first product; Wherein, the mass ratio of coconut shell, sawdust, bamboo chips and volcanic ash is 2:1.5:0.6:0.2, and the particle size of the volcanic ash is 20-60 μm;

[0031] Step 2. Add 0.05% perchloric acid solution to the first product and soak for 10 hours. Stir once every 2 hours. The stirring rate is 200rmp and the stirring time is 15 minutes. After soaking, rinse with deionized water until the outlet water is neutral , add a solution containing phosphoric acid and ferrous sulfate to the first product after washing, and soak for 24 hours to obtain a second product; wherein, the mass of phosphoric acid contained in the solution con...

Embodiment 2

[0034] A preparation method for activated carbon for storing natural gas, comprising the following steps:

[0035] Step 1. Clean the coconut shell, sawdust and bamboo chips, dry them, mix them, and crush them through an 80-mesh sieve, then add volcanic ash, mix evenly, and heat up to 650°C at a rate of 12°C per minute for 6 hours of carbonization to obtain the first product; Wherein, the mass ratio of coconut shell, sawdust, bamboo chips and volcanic ash is 2:1.2:0.6:0.1, and the particle size of the volcanic ash is 20-60 μm;

[0036] Step 2. Add 0.05% perchloric acid solution to the first product and soak for 8 hours. Stir once every 2 hours. The stirring rate is 200rmp and the stirring time is 15 minutes. After immersion, rinse with deionized water until the effluent is neutral , after washing, add a solution containing phosphoric acid and ferrous sulfate, and soak for 24 hours to obtain the second product; wherein, the mass of phosphoric acid contained in the solution conta...

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Abstract

The invention discloses an activated carbon for storage of natural gas and a preparation method thereof, and belongs to the technical field of activated carbon. The preparation method is characterizedin that coconut shell, wood sawdust, bamboo sawdust and volcanic ash are selected as raw materials and dipped into a perchloric acid solution and a solution containing phosphoric acid and ferrous sulfate, and then subjected to the steps of carbonization, activation and the like to obtain the activated carbon for storage of natural gas. The preparation method of the activated carbon for storage ofnatural gas provided in the invention is relatively low in carbonization temperature required, simple and convenient in preparation, easy to operate and suitable for industrial production. The preparation method effectively improves the loading capacity of the activated carbon to methane hydrates, and the prepared activated carbon is excellent in gas storage capacity and suitable for wet storageof natural gas.

Description

technical field [0001] The invention belongs to the technical field of activated carbon, and in particular relates to an activated carbon used for storing natural gas and a preparation method thereof. Background technique [0002] With the increase of the global population, the continuous increase of life expectancy and the development of science and technology, the demand for various resources and energy is also increasing day by day. Coal and oil, two non-renewable energy sources, have always been the main source of energy, especially since the second industrial revolution, which has promoted the massive exploitation and utilization of coal and oil. Due to the excessive exploitation of human beings, the reserves of these two types of energy has been exhausted. This forces humans to constantly search for new alternative energy sources. Among them, natural gas, as an efficient and clean fuel, has been widely used in life and production. At present, my country's natural ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/342C01B32/318C01B32/324F17C11/00
CPCC01B32/318C01B32/324C01B32/342F17C11/007
Inventor 林鹏沈婧菲林锴徐沁杰林树
Owner FUJIAN XINSEN CARBON
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