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规整填料中的ＧＥＭＰＡＫ填料具有通量大、压降小、传质传热效率高、操作弹性大等优点，尤其适用于润滑油型减压塔。加工能力为３５０万ｔ／ａ的大庆第三套常减压蒸馏装置８．２ｍ的大型减压塔内减三线与减四线及净洗段首次应用ＧＥＭＰＡＫ规整填料并配置合理的塔进料及洗涤分配型式，可使同等操作条件下的重质润滑油基础油质量有较明显的提高：６５０ＳＮ料比色由６．０号下降到４．５～５．０号；残炭由０．４０４％下降到０．２４２％～０．２７４％；馏分宽度（２％～９７％）由＞１２８℃下降到９０℃。
The structured packing GEMPAK filler has the advantages of large flux, small pressure drop, high mass transfer heat transfer efficiency, large operating flexibility, etc., especially suitable for lube oil type vacuum tower. Processing capacity of 3.5 million t / a Daqing third set of atmospheric and vacuum distillation unit 8.2m large vacuum tower minus three lines and minus four lines and net wash section for the first time GEMPAK structured packing and configure a reasonable tower feed and Washing distribution type, under the same operating conditions can be significantly improved the quality of heavy lube base oil: 650SN material color decreased from 6.0 to 4.5 to 5.0; residual carbon from 0.404 % Down to 0.242% ~ 0.274%; the width of the fraction (2% ~ 97%) decreased from> 128 ℃ to 90 ℃.