新型DJ-3复合塔盘在重整原料脱水塔扩能改造中的应用

采用新型DJ—3复合塔盘对原采用浮阀塔盘的重整蒸馏脱水塔进行了扩能改造，标定结果表明，复合塔盘比原浮阀塔盘具有更大的操作弹性，更好的分离效果以及更强的抗干扰能力，在原塔体不动的情况下，使处理量提高了56％；在进塔原料含水、含硫量波动较大的情况下，精制油仍能满足要求，精制油韧馏点与塔顶馏出物干点重叠变小。并且，施工时间短，投资省，为半再生式催化重整装置的扩能改造提供了一条良好的途径。

APPLICATION OF COMPOSITE TRAY DJ-3 IN CAPACITY EXPANSION REVAMPING OF REFORMING FEEDSTOCK DEHYDRATING TOWER

The original used float valve trays in a reforming feedstock dehydrating tower were replaced by the novel composite trays DJ-3 in the capacity expansion revamping. The commissioning test showed that the DJ-3 trays had more operation flexibility and better separation effect. Keeping the origi- nal column shell unchanged, the throughput could increase by 56%; and the refined oil could meet the demand even at higher fluctuation of water and sulfur contents in the feedstock. The overlap between the initial point of the refined oil and the end point of the column top was small. Furthermore, with short construction period and low investment, it provides a route for capacity expansion revamping of semi-regeneration catalytic reforming unit.