Large-scale subversive storage of H2 (UHS) includes injecting hydrogen into a geological establishment. This technology plays an important part in the low-diffusion energy arrangement by providing the large depository capacities wanted to buffer migratory energy demand. It allows the cautious storage of big volumes of hydrogen, at press, with extreme energy densities, outside the environmental impact caused by surface tanks. Gas maybe stored in absorbent sandstone or carbonate formations, and in caverns shoveled or extracted by separation in the rock. The Poza de la Sal diapir is a closed circular concavity with Cretaceous Mesozoic matters, formed by gypsum, Keuper clays, and a big extension of seasoning in the center accompanying intercalations of ophite. The low basaltic activity of the field, the reduced permeability and porosity of the seasoning caverns and the proximity to the Páramo de Poza wind park, make it a acceptable place for the construction of an subversive storage of green hydrogen got from of surplus wind power. An enough design of the well allows to complete activity the leaching process to build the cavern and the after injection and ancestry of H2. In the design of the cavern, allure shape influences the stability and security, suggesting the capsular shape with a determined volume of 515,355 m3. The creation of two storage caverns by leaching process at a wisdom of 1000 m with equal ranges, taking into account in their design the distinctness in tensions, hotness and confinement pressure complicated in the process of deformation of the seasoning, allows to complete activity simultaneously the needle in one of bureaucracy and the production of hydrogen in the added. Among the operating parameters, the insight of the base of the cavity and the average temperature of the pothole will determine the maximum and minimum principles of hydrogen density, 11.4 kg/m3 and 4.51 kg/m3 individually. The injection and distillation ratio must perform in conditions of geomechanical security of the cavity, so as to underrate the risks to the environment and family, being conditioned to the smoke pressure inside the cavity to wait in a maximum and minimum range. Part of the stored hydrogen (base vapor or cushion gas volume) will wait in the cavity so that maintain the minimum operating pressure, leaving the rest of the stocked hydrogen (working smoke volume) for ancestry when required for devouring, being the maximum working pressure when the cavity is entire. The maximum total storage volume will be determined established the energy that maybe supplied for one WP Páramo de Poza, as well as the working hydrogen necessary to refill the crater.
Author(s) Details:
L. M. Valle Falcones,
Departamento de Ingeniería Geológica y Minera, Escuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 23, 28003 Madrid, Spain.
C. Grima Olmedo,
Departamento de Ingeniería Geológica y Minera, Escuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 23, 28003 Madrid, Spain.
R. Cagigal Amo,
Departamento de Ingeniería Geológica y Minera, Escuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 23, 28003 Madrid, Spain.
R. Rodríguez Pons,
Departamento de Ingeniería Geológica y Minera, Escuela Técnica Superior de Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 23, 28003 Madrid, Spain.
Please see the link here: https://stm.bookpi.org/ACST-V1/article/view/11864
Keywords: Green hydrogen, energy vector, water electrolysis, wind power, geological storage, leaching process
