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3A molecular sieves are used to dry a range of materials, such as ethanol, air, refrigerants, natural gas and unsaturated hydrocarbons. The latter include cracking gas, acetylene , ethylene , propylene and butadiene . 3A molecular sieves are stored at room temperature, with a relative humidity not more than 90%.
With this variant of PSA developed for use in laboratory nitrogen generators, nitrogen gas is produced into two steps: in the first step, the compressed air is forced to pass through a carbon molecular sieve to produce nitrogen at a purity of approximately 98%; in the second step this nitrogen is forced to pass into a second carbon molecular ...
A nitrogen generator Bottle of 4Å molecular sieves. Pressure swing adsorption provides separation of oxygen or nitrogen from air without liquefaction. The process operates around ambient temperature; a zeolite (molecular sponge) is exposed to high pressure air, then the air is released and an adsorbed film of the desired gas is released.
A natural-gas processing plant in Aderklaa, Austria. Natural-gas processing is a range of industrial processes designed to purify raw natural gas by removing contaminants such as solids, water, carbon dioxide (CO 2), hydrogen sulfide (H 2 S), mercury and higher molecular mass hydrocarbons to produce pipeline quality dry natural gas [1] for pipeline distribution and final use. [2]
Natural gas technology (5 C, 20 P) P. Piping (3 C, 97 P) ... Molecular sieve; Multi-Evaporator System; N. Natural-gas processing; Nitrogen generator; Nitrous oxide ...
This additional purification can be accomplished by piping the inert gas line through a heated column of copper, which converts the oxygen to copper oxide. Water is removed by piping the gas through a column of desiccant such as phosphorus pentoxide or molecular sieves. Air- and water-free solvents are also necessary.
Environmental impact: Generating nitrogen gas by PSA is a sustainable, environmentally friendly and energy efficient approach to providing pure, clean, dry nitrogen gas. Compared to the energy needed for a cryogenic air separation plant and the energy needed to transport the liquid nitrogen from the plant to the facility, generated nitrogen ...
The capacity to discriminate based on both molecular size and adsorption affinity makes zeolite membranes an attractive candidate for CO 2 separation from N 2, CH 4, and H 2. Scientists have found that the gas-phase enthalpy (heat) of adsorption on zeolites increases as follows: H 2 < CH 4 < N 2 < CO 2. [13]
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