To high efficiently remove H2S from low partial pressure coke oven gas (COG), a novel activator (tetramethylammonium arginine, [N1111][Arg]) was used to blend with N-methyldiethanolamine (MDEA) for the absorption of H2S. High concentrated [N1111][Arg]-MDEA aqueous solution was used as absorbent. Thermodynamic properties including absorption amount and H2S loading values were measured, then the kinetic apparent absorption rate was calculated based on the change of absorption amount with time. The removal efficiency of H2S in simulated COG was verified in tray towers. Compared with monoethanolamine (MEA)-MDEA and tetramethylammonium glycinate ([N1111][Gly])-MDEA aqueous solutions, [N1111][Arg]-MDEA aqueous solution takes advantages of higher absorption capacity, absorption rate and removal efficiency. Our results showed that the proposed absorbent has good industrial application prospect in coke oven gas desulfurization, because it achieved 100% removal of H2S in the tray tower containing only 4 sieve plates under high concentrated condition (water content < 45%), which may significantly decrease the energy consumption.

中文翻译：

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用于从低分压焦炉煤气中分离H2S的高效吸收剂。

为了从低分压焦炉煤气（COG）中高效去除H2S，使用了一种新型活化剂（精氨酸四甲基铵，[N1111] [Arg]）与N-甲基二乙醇胺（MDEA）混合以吸收H2S。高浓度的[N1111] [Arg] -MDEA水溶液用作吸收剂。测量了热力学性质，包括吸收量和硫化氢负荷值，然后根据吸收量随时间的变化计算了动力学表观吸收率。在塔式塔架中验证了模拟COG中H2S的去除效率。与单乙醇胺（MEA）-MDEA和甘氨酸四甲基铵（[N1111] [Gly]）-MDEA水溶液相比，[N1111] [Arg] -MDEA水溶液具有更高的吸收能力，吸收率和去除效率。