O Gás Natural é um importante vetor da matriz energética mundial, portanto torna-se crítico o desenvolvimento e aplicação de novas tecnologias para condicionar gás produzido. Nesse contexto, a separação supersônica vem se tornando uma alternativa viável condicionamento do pois necessita menos espaço instalação energia no processo, tendo como força motriz sua geometria. Portanto, objetivo deste ...

It is highly desirable to reduce the membrane thickness in order to maximize the throughput and break the trade-off limitation for membrane-based gas separation. Two-dimensional membranes composed of atomic-thick graphene or graphene oxide nanosheets have gas transport pathways that are at least three orders of magnitude higher than the membrane thickness, leading to reduced gas permeation flux...

Among the numerous applications of metal-organic frameworks (MOFs), a topical class of nanoporous materials, adsorptive separation is gaining considerable attention. Some of the most exciting candidates for gas separation processes exhibit structural transitions, such as breathing and gate opening. While predictive analytical methods are crucial in separation science and have been widely used f...

This paper presents a numerical study of the gas-powder flow in a typical Lapple cyclone. The gas flow is obtained by the use of the Reynolds stress model. The resulting pressure and flow fields are verified by comparison with the measured results and then used in the determination of powder flow that is simulated by the use of a Stochastic Lagrangian model. The separation efficiency and trajec...

Comprehensive two-dimensional gas chromatography can be viewed as a traditional gas chromatography with a sophisticated "elution-resolved" flame ionization detector (GC/FID) or a detector with separation capability. The concept of multidimensional chromatography can be extended to other detectors that also have separation capability, such as ultraviolet, infrared, and mass spectrometer. Mass sp...

An optimal design strategy for membrane networks separating multicomponent gas mixtures based on an approximate permeator model and mixed-integer nonlinear programming (MINLP) is proposed. A permeator system superstructure is used to embed a very large number of possible network configurations and allows the permeator feed-side pressure to be fixed or a design variable. A MINLP design model is ...

The separation process is a fundamental part of all hydrocarbon production. The main objectives for operators is to produce oil free from gas and water, remove all liquids from gas, and discharge produced water without disturbing the environment. The processes involved are in a state of considerable change, under pressures of all kinds: technological, environmental and economic. As a result mod...

A novel metal-carboxylate system metal–organic frameworks ([Zn2(cam)2dabco] (Zn-CD)) membrane was synthesized on porous ZnO support and used for gas separation. XRD and SEM were used to characterize the structure, composition, and morphology of the membrane. The results proved that the uniform Zn-CD seeding layer and continuous Zn-CD membrane were effectively achieved by reactive seeding method...