| 摘要 |
<P>PROBLEM TO BE SOLVED: To selectively lower the total acid number of feedstocks such as a crude oil by hydrogenation. <P>SOLUTION: A lowering process of a total acid number (TAN) of a liquid hydrocarbon quality feedstock is characterized as follows. The liquid hydrocarbon quality feedstock is made to contact with a catalyst that includes a metal oxide of the column third or fourth group of the Periodic Table of Elements or that of a lanthanide oxide, but does not essentially include a metal or a compound thereof of the fifth to tenth group under the existence of a hydrogen-containing gas at the temperature range of 200-400°C and at high pressure, whereby a liquid hydrocarbon quality product having a low total acid number is obtained. <P>COPYRIGHT: (C)2013,JPO&INPIT |
