Hydrogen Storage in Salt Caverns. Case Study Poza de la Sal, Burgos (Spain) | Chapter 7 | Advances and Challenges in Science and Technology Vol. 1

 Large-scale secret storage of H2 (UHS) includes injecting hydrogen into a geological establishment. This technology plays an important act in the low-issuance energy order by providing the large depository capacities wanted to buffer migratory energy demand. It allows the dependable storage of abundant 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 rupture in the rock. The Poza de la Sal diapir is a closed circular cavity with Cretaceous Mesozoic matters, formed by gypsum, Keuper clays, and a big extension of seasoning in the center accompanying intercalations of ophite. The low tectonic activity of the region, the reduced permeability and porosity of the seasoning caverns and the proximity to the Páramo de Poza wind park, make it a appropriate place for the construction of an secret storage of green hydrogen acquired from of surplus wind power. An able 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 planned volume of 515,355 m3. The building 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 dose in one of bureaucracy and the production of hydrogen in the additional. Among the operating parameters, the insight of the base of the cavity and the average temperature of the hollow in land formation 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 folk, 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 apiece 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

Advanced Thermophilic Fermentation of Wood Wastes with Nitrogen-rich Agricultural and Other Organic Wastes for the Production of Biomethane/Renewable Natural Gas Globally | Chapter 1 | Research Advances in Microbiology and Biotechnology Vol. 4

 Improved thicket management formed of the collection of tree mortalities and of the pruning of tree stands can yield a big, but as of now mainly un-utilized biomass property that can be employed as well high in nitrogen content land wastes such as animal manures to produce inexhaustible natural gas via a organic process.  The novel process mimics the well-known forest digestion to poison gas employed by lower termites but operating at thermophilic temperatures. The adaptation process of renewable forest to green or bio-poison gas, designated as “Wood to Methane 3+2” exists of five (3+2) steps. The initial “3” steps of the process include (a) forest maceration to 1 mm pieces, (b) aerobic hyperthermophilic (70o) hydrolysis of the homogenized combination of wood and manure accompanying the aid of thermophilic fungi (Humicola insolens and Sporotrichum thermophile), and (c) the anaerobic thermophilic (55oC) co-digestion of the feedstock into biogas. The definitive “2” steps consist of (d) the improve of the generated biogas into “basic” bio-methane fuel by way of a three-stage commercial sheath separation plan along with the sequestration of the colorless odorless gas, and (e) the conversion of the isolated carbon dioxide into “subordinate” bio-methane fuel accompanying hydrogen produced by wind-stimulate water electrolysis in a thermophilic (55oC) anaerobic trickle bed catalyst employing hydrogenotrophic archaea (Methanothermobacter thermautotrophicus). An optimally patterned, modular, industrial type plant treats occurring 12,000 mt (metric tons) of forest wastes (80% TS) and 12,000 mt of suitable animal manures (10% TS) and create 7.6 million Nm3 of primary and subordinate bio-poison gas fuel along with biography-fertilizers amounting to 2,800 mt of green liquid as ammonium nitrate, 1,000 mt of potassium concentrate and 3,500 mt of phosphate-rich humic soil amendment, has a negative 10,000 mt colorless odorless gas footprint and demands 25 MW of wind power.  The caused renewable natural gas maybe employed essentially or along with green hydrogen as an state-of-the-art, renewable, negative carbon conveyance fuel. The available appropriate waste-wood possessions globally are adequate to supply as much as 1/5 of the world’s energy basic needs in the 2nd half of the 21st century.

Author(s) Details:

John G. Ingersoll,
ECOCORP INC., Arlington, VA-22202, USA.

Please see the link here: https://stm.bookpi.org/RAMB-V4/article/view/10127