What pressure vessels are included in coking plants?
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What pressure vessels are included in coking plants? For example, does a plate heat exchanger count as a pressure vessel?
The air storage tanks, plate heat exchangers, and sulfur melting kettles in coking plants all belong to pressure vessels
A pressure vessel is a sealed device used to hold gases or liquids and withstand certain pressures. In accordance with the Safety Law of the People’s Republic of China on Special Equipment and the Regulations on the Supervision of Safety of Special Equipment, the General Administration for Quality Supervision, Inspection and Quarantine has revised the Catalogue of Special Equipment, which is now promulgated and put into effect with the approval of the State Council. At the same time, the \"Notice on Publication\" (Guo Jian Zhi Guo [2004] No. 31) and the \"Notice on Adding Items to the Catalogue of Special Equipment\" (Guo Jian Zhi Te [2010] No. 22) are repealed. The “Catalogue of Special Equipment” is interpreted by the General Administration of Quality Supervision, Inspection and Quarantine. Its scope is defined as gases and liquefied gases with a maximum operating pressure of 0.1 MPa (gauge pressure) or higher, liquids with a maximum operating temperature equal to or higher than their standard boiling point, as well as fixed and mobile containers with a volume of 30 L or more and an inner diameter (for non-circular cross-sections, this refers to the largest geometric dimension of the cross-sectional boundaries) of 150 mm or more ； Cylinders for gases, liquefied gases, and liquids with a standard boiling point of 60°C or lower, whose nominal working pressure at full charge is greater than or equal to 0.2 MPa (gauge pressure), and whose product of pressure and volume is greater than or equal to 1.0 MPa·L ； Oxygen chamber. Plate heat exchangers are considered pressure vessels
For coking alone, there are the boilers and gas preheaters for ammonium sulfate, as well as the gas preheaters in the underground chambers of the coke ovens; then there are also the storage tanks at the air compression station. The generators in the refrigeration station of the coking plant count as well.