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Simple methodology for sizing of absorbers for TEG (triethylene glycol) gas dehydration systems

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  • Bahadori, Alireza
  • Vuthaluru, Hari B.

Abstract

Natural gas is an important source of primary energy and it is saturated with water vapor under normal production conditions. In the design of natural gas dehydration systems, correct estimation of absorption column size is crucial. Once the lean TEG (Triethylene glycol) concentration has been established, the circulation rate of TEG and number of trays (height of packing) must be determined. The current methods to correlate the TEG circulation rate, TEG purity, water removal efficiency, number of equilibrium stages (or height of packing) and the diameter of contactor employs rigorous calculation techniques involving more complicated and longer computations. The aim of this study is therefore to develop a simple-to-use method, by employing basic algebraic equations to correlate water removal efficiency as a function of TEG circulation rate and TEG purity for appropriate sizing of the absorber at wide range of operating conditions of TEG dehydration systems. Estimates from simplified approach were found to be quite reliable and accurate, as evidenced by the comparisons with literature data where the average absolute deviation percent from reported data in the literature shown to be around 0.05%.

Suggested Citation

  • Bahadori, Alireza & Vuthaluru, Hari B., 2009. "Simple methodology for sizing of absorbers for TEG (triethylene glycol) gas dehydration systems," Energy, Elsevier, vol. 34(11), pages 1910-1916.
    • Handle: RePEc:eee:energy:v:34:y:2009:i:11:p:1910-1916
    DOI: 10.1016/j.energy.2009.07.047
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    References listed on IDEAS

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    1. Gandhidasan, P & Al-Farayedhi, Abdulghani A & Al-Mubarak, Ali A, 2001. "Dehydration of natural gas using solid desiccants," Energy, Elsevier, vol. 26(9), pages 855-868.
    2. Mofarahi, Masoud & Khojasteh, Yaser & Khaledi, Hiwa & Farahnak, Arsalan, 2008. "Design of CO2 absorption plant for recovery of CO2 from flue gases of gas turbine," Energy, Elsevier, vol. 33(8), pages 1311-1319.
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    1. Bahadori, Alireza & Vuthaluru, Hari B., 2010. "Simple equations to correlate theoretical stages and operating reflux in fractionators," Energy, Elsevier, vol. 35(3), pages 1439-1446.
    2. Zhang, Bo & Guo, Yaning & Li, Nian & He, Peng & Guo, Xiangji, 2023. "Experimental study of gas–liquid behavior in three-flow vortex tube with sintered metal porous material as the drain part," Energy, Elsevier, vol. 263(PA).
    3. Bahadori, Alireza & Vuthaluru, Hari B., 2010. "Predictive tools for the estimation of downcomer velocity and vapor capacity factor in fractionators," Applied Energy, Elsevier, vol. 87(8), pages 2615-2620, August.

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