| 摘要 |
<p>PURPOSE:To efficiently regenerate a catalyst having activity deteriorated, by decontaminating said catalyst using liquid saturated or unsaturated hydrocarbon which does not contain sulfur. CONSTITUTION:In regenerating a palladium-based catalyst for selectively hydro- cracking an acetylenic compound in olefin, said catalyst is decontaminated under a temp. condition of 0-80 deg.C with 1-30kg/cm<2>G using liquid hydrocarbon, e.g. saturated or unsaturated aliphatic hydrocarbon, liquefied petroleum gas, a 3-4C fraction or liquefied butane, which does not contain a sulfuric compound. Hence, the efficiency of removing acetylene with the catalyst having activity deteriorated and a loss of butadiene can both be regenerated.</p> |
