The hydrogenation reactor represents a key equipment component of the hydrogenation unit.The sealing technology required for the top flange installation is of a high and difficult standard.In light of the inadequate technical preparation for flange sealing,leakage,and maintenance during the inaugural operation of a 3 million t/a diesel hydrogenation reactor,the leakage type was identified as sealing pressure surface leakage,based on the characteristics of the sealing structure.The installation procedures and requirements were refined through the calculation of bolt pre-tightening torque,inspection and repair of flange sealing grooves,bolts,and gaskets,grinding and fitting accuracy inspection of flange grooves,and tightening.The implementation of the aforementioned procedures was carried out with the utmost rigor in the flange-sealing process of the same type of hydrogenation reactor.This resulted in the achievement of favorable outcomes and the accumulation of successful experience.
关键词
加氢装置/反应器/法兰/密封/螺栓预紧力/八角垫
Key words
hydrogenation unit/reactor/flange/seal/bolt preload/octagonal ring gasket
维普
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