Ethylene and hydrocarbon

Low-pressure Processes. Three processes for the polymerization of ethylene have recently been developed. The commercial process of the Phillips Petroleum Company for the polymerization of ethylene is carried out at relatively low pressures (100-500 psi) in either fixed-bed or slurry-type operations. The catalyst consists of 2-3 weight per cent chromium as oxide on silica alumina, and the reaction temperature varies from 90— 180°C. In fixed-bed operation, purified ethylene and hydrocarbon solvent streams are passed downflow, liquid phase over the catalsrst bpd. Solvent and polymer are collected, and the solvent is flashed overhead. Unreacted gases are removed from the solvent, taken overhead, and metered the solvent is recycled to the reactor. The solvent and polymer in the first receiver are cooled to room temperature to precipitate the polymer, which is then filtered and dried in a vacuum oven. In the slurry-type operation (indicated in Fig. 15-33 by a proposed flow diagram), solvent and a small... 

It is interesting that methane and carbon monoxide are converted to light hydrocarbons by microwave plasma [50b], Acetylene and ethane are the dominant organic products a small amount of ethylene and hydrocarbons containing three carbon atoms have been also found. Higher hydrocarbons and oxygenated organic products were not detected. 

Dehydration of ethanol to ethylene and gasoline (ETG) H-ZSM-5 Ethanol can be selectively transformed into diethylether (diesel fuel), ethylene, and hydrocarbons over H-ZSM-5 depending on reaction temperature [61]... 

In summary, MPT A yields good results for the prediction of the adsorption of N2, methane, ethylene and hydrocarbons on activated (and other) carbons as well as a few silica gel samples considered. Successful predictions at various temperatures were obtained as well for a few four- and five-component gas systems for which data are available on activated carbon. 

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See also in sourсe #XX -- [ , ]

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