| 摘要 |
<p>For removing acids from liquid hydrocarbons, these are treated with an aqueous base. The mixture of liquid hydrocarbons with the aqueous alkali is introduced into a bed which contains a hydrophilic medium, so that the aqueous phase droplets present in the hydrocarbon phase coalesce to form larger drops and thus settle out of the hydrocarbon phase. The coalescence medium used is preferably activated carbon or anthracite, bituminous coal or lignite. Due to the intimate contact between the aqueous base and the liquid hydrocarbon in the bed of the medium, not only high utilisation of the base is achieved, but a high concentration of salts of the acids removed from the hydrocarbon, for example naphthenic acids, is also obtained in the aqueous phase, so that the acids in question can be recovered as a by-product of the process.</p> |
