Disclosed herein are asymmetric multilayer carbon molecular sieve (“CMS”) hollow fiber membranes and processes for preparing the membranes. The processes include simultaneously extruding a core dope containing a polymer and suitable nanoparticles, a sheath dope, and a bore fluid, followed by pyrolysis of the extruded fiber.

Embodiments provide a method of compound removal from a fluid. The method includes contacting one or more metal organic framework (MOF) compositions with a fluid and sorbing one or more compounds, such as CO.sub.2, H.sub.2S and condensable hydrocarbons. One or more of CO.sub.2, H.sub.2S and condensable hydrocarbons can be sorbed simultaneously or in series. The metal organic framework can be an M-soc-MOF.

Systems and methods for separating hydrocarbons on an internal combustion powered vehicle via one or more metal organic frameworks are disclosed. Systems and methods can further include utilizing separated hydrocarbons and exhaust to generate hydrogen gas for use as fuel. In one aspect, a method for separating hydrocarbons can include contacting a first component containing a first metal organic framework with a flow of hydrocarbons and separating hydrocarbons by size. In certain embodiments, the hydrocarbons can include alkanes.

A gas chromatography system can include a circulatory loop, a gas inlet positioned along the circulatory loop, a gas outlet positioned along the circulatory loop, a micro column positioned in line with the circulatory loop, and an in-line population sensor positioned in line with the circulatory loop. The in-line population sensor can be configured to detect changes in gas population. The gas inlet and gas outlet can be associated with a gas inlet valve and gas outlet valve, and configured to admit or withdraw gas from the circulatory loop, respectively. A gas sample can be circulated through the circulatory loop for at least one cycle, and a component of the gas sample can be detected using the in-line population sensor.

A method for removing condensable components from a fluid containing condensable components. The method involves optimizing the temperature of an initial feed stream including the condensable components through heat exchange and cooling to condense liquids there from. The liquids are removed to form a gas stream which is then compressed and after-cooled to form a high pressure stream. A portion of the high pressure stream is expanded to form a cooled low pressure stream which is mixed with the initial feed stream to augment cooling and condensation of condensable components in the initial feed stream.

Disclosed is an improved process for recovering condensable components from a gas stream, in particular, hydrocarbons from a gas stream such as natural gas. The present process uses solid adsorbent media to remove said hydrocarbons wherein the adsorbent media is regenerated in a continuous fashion in a heated continuous counter-current regeneration system, wherein said heated regenerated adsorbent media is cooled prior to reuse.

A vaporized fuel processing device includes a fuel tank storing fuel used for an internal combustion engine, a pressurizing portion performing a pressurizing process to increase an inner pressure of the fuel tank by supplying gas from outside to inside the fuel tank, and a controller controlling an operation of the pressurizing portion. The controller controls the pressurizing portion to perform the pressurizing process and to keep the inner pressure of the fuel tank at or above a predetermined pressure value at which vaporized fuel is prevented from flowing out of the fuel tank, except for a time of fueling of the fuel tank.

A device for treating a gas laden with pollutants, includes at least one adsorption module for adsorbing the pollutants, which is utilized in an adsorption apparatus. The adsorption module includes at least one electrically conductive layer of an activated carbon fiber mat, an electric current circuit for heating the activated carbon fiber mat for the desorption of the adsorbed pollutants, and distributing conduit which is routed into the center of the adsorption module and has outlet openings for a flush gas for inertizing and rinsing the activated carbon fiber mat.

A device for the removal of volatile organic compounds including at least one first connector arranged at the outlet of a gas stream to be treated. At its top, has a connection extension that links with the bioreactor located in the middle part of the device (having a nutrient solution where organisms that degrade volatile organic compounds can grow). Additionally, there is a dispersion arrangement that couples with an outlet through which the gaseous stream, once treated, is expelled out to the environment. A distribution network of a nutritive solution with microorganisms that degrade volatile organic compounds. The connection extension includes a distributor cone that is arranged in an inverted way and internally emptied and also has a cylindrical extension at its top. The distributor cone allows the airflow to be displaced by an external path into the internal walls of the distributor cone, whose cylindrical extension connects with a second perforated cylinder with multiples drill holes throughout its periphery. The axial axis of the cylindrical extension coincides with the axial axis of the distributor cone. The perforations of this second perforated cylinder are arranged so that the gas output can enter the bioreactor from its bottom.

Disclosed are embodiments of a method of regenerating a desiccant in an off-line treater of a polyolefin production process. The method may include a heating phase followed by a cooling phase. The heating phase may involve use of a regenerating gas made from heating a treated a recycle stream of the polyolefin production process to regenerate desiccant in an off-line treater. The cooling phase may involve thermosyphoning the regenerating gas, nitrogen, an olefin-free diluent, or combinations thereof in a closed-convection loop of the off-line treater.