We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
运用等爛闪蒸法的安全阀计算.
- Authors
吴晓欣
- Abstract
This paper introduces the general design process of pressure relief valve in petrochemical units・ An example of sizing the pressure relief valve which locates on the recycle gas discharge line at the top of the cold high pressure separator of diesel hydrotreating unit overseas is also introduced・ When considering external fire case of the cold high pressure separator, isentropic flash method is utilized for the simulation of relieving fluid under high pressure and high temperature・ With this method, the calculated relief area is more accurate and used for determination of the valve orifice size. Conduct hydraulic calculation on the suction and discharge pipelines of the pressure relief valve based on isometric diagrams to determine the size of pipelines and guide the valve type selection. For the suction pipelines, the total pressure loss should not exceed 3% of the pressure relief valve set pressure which prevents valve failure from chattering・ For the discharge pipelines, the ratio of calculated built-up backpressure to pressure relief valve set pressure is used for valve type selectioru This guarantees the pressure relief valve will pop open normally under set pressure・ If the ratio is less than 10% for normal cases and less than 21% for external fire cases, conventional type valve can be used・ If the ratio is more than 10% but less than 50%, balanced type valve should be used・ And if the ratio is more than 50%, pilot-operated type valve should be used.
- Subjects
RELIEF valves; VALVES; ELECTROHYDRAULIC effect; PETROLEUM chemicals; GLOW discharges
- Publication
Petroleum Refinery Engineering, 2023, Vol 53, Issue 9, p25
- ISSN
1002-106X
- Publication type
Article