Abstract
Common problem in natural gas purification is Hydrate Formation. Hydrate is a solid – ice – like crystals in which gas molecules are trapped in the structure of solid water and causing problems especially clogging in the pipe line. Hydrate Formation usually happens at Dew Point Control Unit (DPCU) where the temperature is lowered to separate natural gas with heavy fraction by using Joule – Thomson effect. This paper aims to predict the Hydrate Formation Temperature at certain pressure by using some of HFT calculation methods. Kartz, Towler, Bahadori, and New Correlation are used to predict the Hydrate Formation Temperature with the pressure range of 700 – 2200 kPa. The obtained temperatures forming the gas at pressure of 700 kPa using Kartz, Towler, New Correlation, and Bahadori Calculation respectively are 274.26 K, 274.92 K, 275.02 K, and 275.2 K with Dew T at pressure of 700 kPa is 279.06 K, that means the Dew Point temperature is higher than the HFT, while at pressure 2200 kPa the temperature of Hydrate Formation respectively are 283.15 K, 283.46 K, 283.54 K, and 283.7 K with Dew T at pressure of 2200 kPa is 299.75 K, that means the Dew Point temperature is higher than the HFT.
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