To high efficiently remove HS from low partial pressure coke oven gas (COG), a novel activator (tetramethylammonium arginine, [N][Arg]) was used to blend with N-methyldiethanolamine (MDEA) for the absorption of HS. High concentrated [N][Arg]-MDEA aqueous solution was used as absorbent. Thermodynamic properties including absorption amount and HS 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 HS in simulated COG was verified in tray towers. Compared with monoethanolamine (MEA)-MDEA and tetramethylammonium glycinate ([N][Gly])-MDEA aqueous solutions, [N][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 HS in the tray tower containing only 4 sieve plates under high concentrated condition (water content < 45%), which may significantly decrease the energy consumption.
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- Coke oven emissions (COEs) contain harmful compounds called polycyclic aromatic hydrocarbons (PAHs), which may harm the cardiovascular system, particularly in people with high blood pressure.* -
- A study involving 518 workers showed that those with higher exposure to COEs had greater systolic and diastolic blood pressure compared to those with lower exposure.* -
- The research identified that a specific genetic variation (SNP) in the PINK1 gene could influence blood pressure changes due to COEs exposure, highlighting the combined impact of environmental and genetic factors on workers' health.*
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