炼油技术与工程 ›› 2023, Vol. 53 ›› Issue (1): 51-.

• 配管技术 • 上一篇    下一篇

石化企业新建供氢中心高压氢气管道试验方案探讨

陈泷, 徐兴文, 丁梅峰   

  1. 中石化广州工程有限公司
  • 收稿日期:2022-08-12 出版日期:2023-01-15 发布日期:2023-01-31
  • 通讯作者: 徐兴文，高级工程师，中石化广州工程有限公司技术副总监。E-mail:xuxw.lpec@sinopec.com。
  • 作者简介:陈泷，工程师，硕士，2016年毕业于中国石油大学(北京)油气储运工程专业，主要从事油气储运、氢能等方面的工艺和材料设计工作。联系电话:020-22193415,E-mail:chenlong.lpec@sinopec.com。
  • 基金资助:
    中国石化“十条龙”科技攻关项目(20002A010);

Discussion on test scheme of high-pressure hydrogen piping of newly-built hydrogen supply center in petrochemical enterprise

Chen Long, Xu Xingwen, Ding Meifeng   

  1. SINOPEC Guangzhou Engineering Co., Ltd.
  • Received:2022-08-12 Online:2023-01-15 Published:2023-01-31

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摘要：

基于某石化企业内新建供氢中心的工程案例，比较了国内相关氢能设计标准规范(GB 50177,GB/T 50156,GB/T 50516和Q/SH 0770)的适用范围和针对氢气管道试验的要求。针对该项目设计压力为25 MPa的高压氢气管道，采用ASME PCC-2规范计算采用气压试验时管道储存的能量并预估最小安全距离。计算结果表明：因需要较大的安全防护距离，将气压试验作为压力试验方案难以实施。提出了高压氢气管道的(强度)压力试验、气体泄漏性试验和泄漏量试验方案，总结了高压氢气管道试验应关注的其他因素，主要包括水压试验氯离子浓度的控制、水压试验温度、管道坡度设置以及试压过程管道的周向应力和轴向应力校核等。

关键词: 石化企业, 供氢中心, 高压氢气管道, 试验方案, 压力试验, 泄漏性试验, 泄漏量试验, 最小安全距离

Abstract:

Based on the engineering case of a newly-built hydrogen supply center in a petrochemical enterprise, the application scope of relevant domestic hydrogen energy design standards and specifications(GB 50177, GB/T 50156, GB/T 50516 and Q/SH 0770) and the requirements for hydrogen piping test are compared. For the high-pressure hydrogen piping with the design pressure of 25 MPa, ASME PCC-2 code is adopted to calculate the energy stored in the piping during the pneumatic test and estimate the minimum safety distance. The results show that it is difficult to implement the pneumatic test as a pressure test scheme because of the need for a large safety protection distance. In this paper, the schemes of pressure test, leak test and leakage rate test of high-pressure hydrogen piping are proposed, and other aspects that should be paid attention to in these tests are summarized, which mainly include: control of chloride ion concentration in the hydrostatic test, the temperature of the hydrostatic test, the slope setting of piping, and check of circumferential stress and axial stress of piping during pressure test. This paper can provide practical reference for similar projects.

Key words: petrochemical enterprise, hydrogen supply center, high-pressure hydrogen piping, test scheme, pressure test, leak test, leakage rate test, minimum safety distance