Research on Calculation and Control of Positive Pressure Air Supply System for Offshore Booster Station

Abstract

[Introduction] The paper aims to maintain a good and safe operating environment for offshore booster station, reduce the corrosion effect of high-salt and high-humidity gas on the equipment, and increase the service life of process equipment, the calculation method and control method of ensuring the indoor positive pressure are analyzed. [Method] Through the comparative analysis of the calculation results of the gap method and the number of air changes method, the calculation principle of the positive pressure air supply was determined. Through variable air volume adjustment and residual pressure valve control analysis, the indoor positive pressure control method was determined. [Result] The results show that the indoor positive pressure air supply volume of offshore booster station should be calculated according to the gap method, and the conventional number of air change method is not suitable for the scenario. At the end of the variable air volume, a smaller air volume is suggested to be used to achieve precise positive pressure control and reduce energy consumption significantly. [Conclusion] The research results can quickly and accurately calculate the positive pressure air supply volume, and at the same time can realize the precise control of the positive pressure air supply system, which provides theoretical guidance for the design of the anti-salt and anti-fog positive pressure air supply system for offshore booster station.

Keywords

• offshore booster station
• positive pressure air supply
• variable air volume end
• residual pressure valve