Experimental investigation of an improved version of the four-step magnesium-chlorine cycle


ÖZCAN H. , Dincer I.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.43, ss.5808-5819, 2018 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 43 Konu: 11
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.ijhydene.2017.08.038
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Sayfa Sayısı: ss.5808-5819

Özet

In this paper, an experimental study is undertaken to capture HCl in dry form in order to decrease the power consumption of the four-step Mg-Cl cycle using MgO as the capturing agent. A new experimental method is developed to capture HCl from its mixture with steam, and liberate HCl in a dry form. Several cases are studied to observe HCl capture performance, including testing of the resulting substances in detail using Thermogravimetric Analysis (TGA), and X-ray diffraction (XRD) tests. The results of these experiments show 30.8% HCl capture by solid MgO particles in a semi-batch packed bed reactor design with an uncertainty value of 1.17%. The XRD results indicate that an optimum reactor temperature similar to 275 degrees C is critical to prevent the process from side reactions and undesired products. The experimental results are adapted to the four-step Mg-Cl cycle to form a final design with HCl capture.