According to Pressure Vessels Periodical Inspection Regulation,the article analysed the process and content about coke chamber inspection,discussed the reasons resulting in defects and areas,and putted forword the flaw treatment.

A method named acid resolution-elementary analysis was established to determine the quality ratio of hydrogen to carbon of coke on cracking catalyst.

Mainly presents the main quality control elements in delayed coking tower manufacturing process,such as prefabricating,constituting and welding,and presents quality control methods in practical manufacturing procedure,to guarantee the equipment quality to satisfy design and operating requirements.

Compared with the corrosion of four coking towers,the result shows that the serious corrosion of head or oil-gas pipes on coking towres is caused by high-temperature sulfur corrosion.

Metallographic test of the specimen material taken from a deformed wall of a coking tower was performed.

Research on natural frequency and vibration model of coke drum structure;

Effect on the deformation of the body of coke drums due to the ascending of supports;

Study on Physical Properties of Low Carbon Steel 20g and the Deformation Mechanism of Coke Drum;