泉州石化230万t/a连续重整装置催化剂已使用5年多，催化剂已接近使用寿命末期。为了能够保障装置安全运行，进而扩能增产以实现提高经济效益的目的，创新性地提出采用高密度催化剂R264在线替换标准密度催化剂R234，实现不停工换剂。在线换剂结果表明，R264更适合扩能改造装置，换剂后装置纯氢收率、液体收率等指标均达到预期效果。同时本次在线更换高密度催化剂为国内首创，也为其他企业未来进行在线换剂操作积累了经验。

The catalyst in the 2.3 million tons/year continuous catalytic reforming (CCR) unit in Sinochem Quanzhou Petrochemical Company has been used for more than 5 years and is approaching the end of its service life.In order to ensure the safe operation of the unit, and expand the capacity to increase production for improving economic efficiency, R264, a high-density catalyst, is innovatively applied to replace online the existing standard-density catalyst R234 to achieve non-stop replacement.It is shown after replacement that R264 catalyst is more suitable for capacity expansion and transformation of the CCR unit.After the replacement, the unit indicators such as the yields of pure hydrogen and liquid products have reached the expected level.At the same time, this online replacement of high-density catalyst is pioneering in China, which has also accumulated operation experience, supplying references for other companies to replace catalyst online in the future.