Natural Gas Dehydration Based On Agricultural By Products

891 WordsJun 24, 20164 Pages
This research project emphasizes on natural gas dehydration based on agricultural by-products known as biosorbents in a pressure swing adsorption (PSA) process, which is a widespread industrial separation system. The commercial widely used adsorbents such as zeolites, silica gel, and molecular sieves are costly due to high regeneration temperature and operational difficulties regarding maintaining a cyclic process. Moreover, even though these adsorbents are being used in industries, still a considerable amount of other species are being adsorbed along with the preferentially species, which lead to lower selectivity. Hence, there has been a constant demand for cost-effective adsorbent with high selectivity and equilibrium capacity. The shortcomings of other separation methods limit their application. Triethylene glycol (TEG) based absorption – desorption process has been widely applied for natural gas dehydration in industries. Inevitably, contaminants will appear in the glycol solution. Even though solution filters were installed, salt build-up leads to precipitation in the regenerator where water content is at its lowest. On the other hand, FeS and Fe2O3 also spell corrosion troubles. What’s more, Black Solution is also caused by heavy hydrocarbon absorbed from the feed gas accumulating. TEG based absorption – desorption, however, consumes less energy, since the regeneration of TEG is less demanding than adsorbent regeneration. Absorption by TEG is nowadays the most

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