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Design Process Modeling of Hydrogen Production via Methane Assisted Solid Oxide Electrolysis Cell

為了解決6000 ATM的問題，作者孫幸傑 這樣論述：

Currently, hydrogen is a clean energy carrier, which holds great promise as a power source for the development of green gas production technologies. The most commonly used process for the production of hydrogen is steam reforming, which is primarily based on fossil fuels. Nonetheless, the steam ref

orming process involves pressure swing adsorption, which highly requires pressure, resulting in high power consumption. A solid oxide electrolysis cell (SOEC) is an efficient method of producing hydrogen using modern technology. However, SOEC's energy consumption is still largely based on electricit

y, which is a more valuable energy resource. This study proposes a novel hydrogen production process that uses fuel-assisted solid oxide electrolysis cells (SOFEC) to reduce the electricity required for SOEC. The fuel that has highly methane fed to the anode of SOFEC for fuel-assisted electrolysis.

The advantage of this system is that energy waste can be minimized. In addition, part of the electrical energy used in electrolysis is replaced by the chemical energy of the fuel, which greatly reduces the requirement for external power source during electrolysis. Furthermore, it is also possible to

preheat the feed by using the thermal energy from the high- temperature flow created by the SOFEC exhaust. During this study, the operating variables such as operating temperature, carbon steam ratio, SOFEC steam utilization were taken into consideration to understand how these variables will affec

t the system. In terms of improved systems, analyze the impact of different SOFEC operating parameters on efficiency and specific energy consumption of the system, and compare it with the conventional hydrogen production process. Under the same condition with conventional process, the SOFEC with hea

t recovery system has the steam utilization of 0.9, a s/c ratio of 2 and a cathode steam fraction ratio of 0.9 at 800oC and 1 atm, the specific electricity and thermal energy of SOFEC is about 0.1687 and 1.4205 kWh/Nm3-H2, so the SOFEC of this research in the hydrogen production system compared with

the PSA process has less total energy consumption (14.09 %) with the same amount of hydrogen production