石油化工设计 ›› 2025, Vol. 42 ›› Issue (3): 15-17.

• 设计技术 • 上一篇    下一篇

《石油化工可燃气体排放系统设计规范》中管道摩阻损失计算方法分析

夏智,廖国军   

  1. 中国五环工程有限公司,武汉430000
  • 收稿日期:2024-10-25 出版日期:2025-08-25 发布日期:2025-08-25
  • 作者简介:夏智,男,2016年毕业于清华大学化学工程与技术专业,工学博士,高级工程师,主要从事化工设计。联系电话:027-81927213.

Analysis on Calculation Method for Pressure Drop in Design Specification for Combustible Gas Discharge System in Petrochemical Industry (SH 3009-2013)

Xia ZhiLiao Guojun   

  1. Wuhuan Engineering Co., Ltd., Wuhan, Hubei, 430000
  • Received:2024-10-25 Online:2025-08-25 Published:2025-08-25

摘要:

可燃气体事故安全排放系统是石油化工企业安全设施的重要组成,而正确计算排放系统的摩阻损失是合理设计排放系统的前提。本文针对管道摩阻损失计算方法这一问题,对SH 3009-2013《石油化工可燃气体排放系统设计规范》API 521-2014Pressure-relieving and Depressuring Systems中采用的管道摩阻损失计算公式进行了对比分析,并通过理论推导证明了SH 3009-2013相关内容中马赫数的计算公式有误,进一步分析了其对可燃气体事故安全排放系统设计造成的偏差。建议SH 3009-2013标准修编时对马赫数计算公式进行更正。

关键词: 安全排放系统, 标准, 马赫数, 摩阻损失

Abstract:

The emergency discharge system for combustible gas is an important component of safety facilities in petrochemical plants, and the correct calculation of pressure drop is a prerequisite for the rational design of the discharge system. To address the issue of pressure drop calculation method, this paper compares the calculation formulas adopted in SH 3009-2013 and API 521-2014, proves through theoretical derivation that the calculation formula for Mach number in SH 3009-2013 is incorrect, and further analyzes the impact of the incorrect calculation formula on the design of emergency discharge system for combustible gas. It is suggested that the calculation formula for Mach number is to be corrected during the revision of SH 3009-2013.

Key words: emergency discharge system, standard, Mach number; pressure drop