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Gas desulfurizing agent and preparation method thereof

A desulfurizer and gas technology, applied in the field of renewable sodium phosphate solution, can solve the problems of poor salt resistance and poor foaming ability, and achieve the effects of low cost, low energy consumption, and increased specific surface area

Inactive Publication Date: 2013-02-13
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The reason why anionic-nonionic surfactants are used is mainly because nonionic surfactants have better anti-salt effect, but slightly poor foaming ability, and anionic surfactants have good foaming ability, but their anti-salt effect is poor

Method used

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  • Gas desulfurizing agent and preparation method thereof

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Embodiment 1

[0025] Sodium phosphate dodecahydrate accounts for 3.0% (300g) of the mass percentage of the solution, 0.05% (5.2g) of lauryl alcohol, water (10000g), anionic surfactant sodium lauryl sulfate and nonionic surface The concentration of active agent alkyl polyglucoside is 5×10 -5 mol / L (mol). According to the above ratio, first dissolve sodium phosphate in water at 25~30°C, add foam stabilizer and surfactant, then stir for 20~30 minutes, add phosphoric acid aqueous solution to make the pH value 8.5~9.0, and prepare desulfurization solution.

Embodiment 2

[0027] Sodium phosphate dodecahydrate accounts for 23.0% (3000g) of the mass percentage of the solution, 0.05% (6.5g) of lauryl alcohol, water (10000g), anionic surfactant sodium lauryl sulfate and nonionic surface The concentration of active agent alkyl polyglucoside is 5×10 -5 mol / L (mol). According to the above ratio, first dissolve sodium phosphate in water at 25~30°C, add foam stabilizer and surfactant, stir for 20~30 minutes, add phosphoric acid aqueous solution to make the pH value 8.5~9.0, and prepare desulfurization solution.

Embodiment 3

[0029] Sodium phosphate dodecahydrate accounts for 23.0% (3000g) of the mass percentage of the solution, 0.1% (13g) of lauryl alcohol, water (10000g), anionic surfactant sodium lauryl sulfate and nonionic surfactant The concentration of alkyl polyglucoside was 12.5×10 -5 mol / L (mol). According to the above ratio, first dissolve sodium phosphate in water at 25~30°C, add foam stabilizer and surfactant, stir for 20~30 minutes, add phosphoric acid aqueous solution to make the pH value 8.5~9.0, and prepare desulfurization solution.

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Abstract

The invention relates to a gas desulfurizing agent, in particular to a renewable sodium phosphate solution to which composite surfactant is added. The formula of the gas desulfurizing agent comprises 3 to 23%(wt) of hydrated sodium phosphate, 0.05 to 0.1%(wt) of dodecanol, a surfactant of which the concentration is 10*10<-5> to 25*10<-5>mol / l based on the total solution, an acid water solution present in an amount capable of enabling the pH (potential of hydrogen) of the desulfurizing solution to be 8.5 to 9.0, and the balance of water. The gas desulfurizing agent disclosed by the invention can be widely applied to the field of gas desulfurization and decarburization such as natural gas desulfurization and flue gas desulfurization.

Description

technical field [0001] The invention relates to a gas desulfurizer, in particular to a renewable sodium phosphate solution added with a composite surfactant. It can be widely used in gas desulfurization and decarbonization fields such as natural gas desulfurization and flue gas desulfurization. Background technique [0002] The vast majority of energy used by humans today is non-renewable coal, oil and natural gas. At present, the gas production of domestic sour gas fields (the mass fraction of sulfur is 2% to 4%) accounts for about 60% of the national gas production, and most sulfides are harmful impurities to natural gas, especially hydrogen sulfide, not only Serious corrosion is caused to important equipment such as storage tanks and pipelines, and it also seriously endangers the health of nature and human beings. To fundamentally solve these problems, it is necessary to consider the removal of hydrogen sulfide in natural gas. The desulfurization device widely used in ...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/52
Inventor 王树立马路李恩田周诗岽
Owner CHANGZHOU UNIV