Description

The saturation cell for brine–H₂ systems is engineered to dissolve hydrogen into brine under controlled, high-pressure conditions using a floating piston accumulator mounted on a stand. The cell is equipped with a magnetically driven stirrer located in the brine phase to ensure to ensure homogeneous mixing and maximize mass transfer efficiency. An integrated pressure transducer with display, inlet/outlet valves, and a precision H₂ injection system—featuring a sparger that produces fine bubbles—further enhances the gas–liquid contact area. The cell can be used with an electrical heating jacket capable of reaching up to 150°C, allowing precise temperature control to simulate reservoir conditions and optimize gas solubility. All wetted components are fabricated from 316L stainless steel, providing excellent resistance in a hydrogen environment. A hydrogen gas line, consisting of a 3 Kpsi pressure regulator and a 0–1000 Nml/min mass flow controller, is used to accurately measure the H₂ volume introduced into the cell. A syringe pump is employed to initially pressurize the brine and transfer the H₂-saturated brine to the downstream process. In operation, the 1-liter cell is first completely filled with brine at 200 bar by displacing the piston. Subsequently, 20 cc of H₂ gas at 200 bar is injected, and the mixture is agitated for approximately 5 hours to achieve saturation in accordance with Henry’s Law. Any excess H₂ remaining in the gas phase after saturation can be gently vented through the outlet valve, ensuring that the desired equilibrium is maintained within the cell.