Petro-chemical Equipment Technology ›› 2024, Vol. 45 ›› Issue (2): 15-18,39.doi: 10.3969/j.issn.1006-8805.2024.02.004

• STATIC EQUIPMENT • Previous Articles    

On Design Temperature of Pressure Vessel with Special Structure

Li Jifeng1, Wang Bo1, Huang Zhiying2   

  1. 1. Dalian Energas Gas-System Co., Ltd., Dalian, Liaoning, 116600;
    2. CFHI Dalian Engineering & Technology Co., Ltd., Dalian, Liaoning, 116600
  • Received:2024-01-14 Accepted:2024-02-29 Online:2024-03-15 Published:2024-03-22

Abstract: Design temperature is an important design parameter in the design calculation of pressure vessels. It affects the safe operation of pressure vessels directly. This paper highlights the basic principles in GB/T 150, ASME and HG/T 20580 codes for determination of the design temperature of pressure vessels. Fluid analysis method was adopted to calculate the wall temperature of the shell metal of two electric heaters with different specifications under six working conditions. Then the relationship between the metal wall temperature and the flow rate, the maximum temperature of the medium and the maximum wall temperature of the heating element was obtained. The paper also summarizes the factors affecting the metal wall temperature of the electric heater shell, and gives suggestions for determining the design temperature of the electric heater shell. This can provide reference for the structure design of electric heaters.

Key words: electric heaters, pressure vessel, design temperature