Filtration of gases at high pressures: Permeation behavior of fiber-based media used for natural gas cleaning

Hot Air Permeable Preceramic Polymer Derived Reticulated Ceramic Foams

“…The SiOC foams produced in this work are compared to other porous structures in the permeability map adapted from Innocentini et al, ,− ,− as shown in Figure S12. The map is made using experimental k 1 and k 2 data extracted from the literature and used to define the permeability of porous materials.…”

“…The produced ceramic foams were characterized first concerning their room temperature permeability parameters by following the same procedures described in previous works. − The permeability of all batches was evaluated in a laboratory-made apparatus, with tests performed in a steady-state regime with dry airflow at room conditions ( T o = 25–29 °C, P o = P atm ≈ 94.9 kPa) on two specimens from the same batch. The pressure drop across the specimen ( P i – P o ) was measured with a digital micromanometer (0–1000 Pa, Dwyer Mark III, series 475, Michigan, USA) in response to variations in the air volumetric flow rate Q , controlled by a needle valve, and measured with rotameters (0–400 and 300–3000 L/h, Conaut, São Paulo, Brazil).…”

“…The pressure drop across the specimen ( P i – P o ) was measured with a digital micromanometer (0–1000 Pa, Dwyer Mark III, series 475, Michigan, USA) in response to variations in the air volumetric flow rate Q , controlled by a needle valve, and measured with rotameters (0–400 and 300–3000 L/h, Conaut, São Paulo, Brazil). The investigated parameters were retrieved from experimental data and fitting of Forchheimer’s equation (eq S(1)), an empirical relationship well accepted in the literature to express the parabolic dependence of pressure drop (Δ P ) with the resulting superficial or face velocity ( v s ) of a fluid through the medium, − and the details for all permeability equations and calculations were given in the supporting information.…”

Study on cooperative treatment of natural gas pipeline cleaning wastewater and membrane module

“…Regular cleaning of pipes will flush out substances such as scaling, hydrate and liquid accumulation. Polyester fiber membrane is widely used to remove impurities in natural gas [2] . After the treatment, the surface material composition of the membrane would be complex since the concentration of COD (Chemical Oxygen Demand), petroleum, and Fe is almost up to 1575.84 mg/L, 129.32 mg/L, 122.29 mg/L, respectively.…”

Avaliação da influência de diferentes métodos de cura na permeabilidade e no desempenho físico-mecânico de telhas de fibrocimento reforçadas com fibras poliméricas

“…Filomeno (2018) utilizou a temperatura de 60°C e estudou diferentes faixas de UR (60, 70, 80 e 90 %), e constatou em sua pesquisa que a CA com 60% UR proporcionou os melhores desempenhos físicomecânicos e maior grau de carbonatação dos compósitos de fibrocimento reforçados com polpa de eucalipto. Diagrama esquemático de possíveis morfologias básicas de poros Fonte: Própria autoria A avaliação da permeabilidade em concretos, argamassas e compósitos de fibrocimento é amplamente abordada na literatura por meio de diferentes técnicas(INNOCENTINI et al, 2012;PAN et al, 2017aPAN et al, , 2017bPHUNG et al, 2015;RANJITH;VIETE, 2011;TEIXEIRA et al, 2014). No entanto, em telhas de fibrocimento é raramente encontrada alguma abordagem a respeito de permeabilidade.…”