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Activation method for improving performance of adsorbing material in storage of natural gas

A technology of adsorption material and activation method, which is applied in the field of adsorption materials, can solve problems such as unsatisfactory adsorption performance, and achieve the effect of fast rate and large adsorption capacity

Active Publication Date: 2015-03-25
NINGXIA BAOTA PETROCHEM SCI & TECH IND DEV
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AI Technical Summary

Problems solved by technology

However, the adsorption performance of the reported adsorbents is not very satisfactory.

Method used

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Experimental program
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Embodiment Construction

[0020] First, select 20-100 mesh natural zeolite for calcination, the calcination temperature is 790°C, and the calcination time is 8 hours.

[0021] Second, acid treatment is carried out on the calcined natural gas adsorption material. The aqueous solution of hydrochloric acid, nitric acid and hydrofluoric acid is selected, the concentration of the acid solution obtained is 1.0 mol / L, and the acid treatment time is 5 hours.

[0022] The 3rd, deploy the aqueous solution of sodium hydroxide, potassium hydroxide, ammonium hydroxide, the alkali solution concentration of preparation is 2.5 mol / L, and alkali treatment time is 5 hours.

[0023] The 4th, select sodium chloride, potassium chloride, ammonium chloride, sodium sulfate, ammonium sulfate, sodium nitrate, ammonium nitrate to prepare saline solution for use, and the ion concentrations obtained are respectively: Na + The concentration is 3.0 mol / L, K + The concentration is 2.0 mol / L, NH 4 + The concentration is 1.5 mol / L,...

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Abstract

The invention discloses an activation method for improving the performance of an adsorbing material in storage of natural gas. The method comprises four steps, including baking, acid treatment, alkali treatment and salt treatment, wherein hydrochloric acid, nitric acid and hydrofluoric acid are used for preparing an acid solution of which the concentration is 0.5mol / L to 2.0mol / L; sodium hydroxide, potassium hydroxide and ammonium hydroxide are used for preparing an alkaline solution of which the concentration is 0.5mol / L to 2.5mol / L; sodium chloride, potassium chloride, ammonium chloride, sodium sulfate, ammonium sulfate, sodium nitrate and ammonium nitrate are used for preparing a salt solution; the acid solution, the alkaline solution and the salt solution are respectively used for activating the adsorbing material which is baked at the temperature of 300-890 DEG C. The method disclosed by the invention can be used for producing a high-efficiency natural gas adsorbing material which is high in specific surface area, high in natural gas storage capacity, good in adsorption and desorption performance and long in service life.

Description

technical field [0001] The invention relates to an activation treatment method for adsorption materials, in particular to an activation method for improving natural gas adsorption materials, and belongs to the technical field of adsorption materials. Background technique [0002] In the study of adsorption storage of natural gas, the most important core work is the development of high-performance adsorbent and the optimization and regulation of its preparation process, especially the activation treatment method of the adsorption material is the most critical. [0003] Adsorbent materials for storing natural gas have been widely developed and utilized, such as natural zeolites, molecular sieves, activated alumina, silica gel, carbon black, activated carbon, activated carbon fibers, metal-organic framework compounds, etc. However, the adsorption properties of the reported adsorbents are not very ideal. In the activation treatment of adsorption materials, the activation method...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/18B01J20/20B01J20/26B01J20/08
CPCB01J20/02B01J20/04B01J20/045B01J20/046B01J20/06B01J20/08B01J20/18B01J20/20B01J20/30
Inventor 杨惠琳马利海陈磊李国明张立忠
Owner NINGXIA BAOTA PETROCHEM SCI & TECH IND DEV
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