Abstract
With the purpose of comparing the effects on the absorption of hydrogen sulfide from natural gas of the addition of SiC (30-nm-diameter) nanoparticles into two common desulfurization solvents (TEA and MDEA), certain properties of MDEA-based and TEA-based SiC nanofluids were studied, such as the stability, rheological behavior, and thermal conductivity. Sedimentation experimental tests and zeta potential (ζ) results showed that the two types of nanofluids displayed ideal stabilities . Rheological measurements showed that the two types of SiC nanofluids were Newtonian fluids and that the viscosities of the TEA-based SiC nanofluids far outweighed those of MDEA-based SiC nanofluids. We also discovered that the thermal conductivities of the two types of nanofluids increased with the concentration. Dynamic experiments on the absorption of hydrogen sulfide from natural gas by MDEA-based and TEA-based SiC nanofluids showed that the desulfurization effect of MDEA-based SiC nanofluids exceeded that of TEA-based SiC...
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