高含硫天然气净化装置检修污水控制优化
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摘要
普光天然气净化厂以高含硫化氢天然气为原料,天然气净化装置运行过程中会产生大量的硫化亚铁。装置检修之前必须对其进行钝化去除,否则当系统敞开检修时,硫化亚铁与氧气接触会发生自燃,造成人员伤害、设备损坏。此外,系统中存在小分子硫醇、氨氮等恶臭物质,会造成环境污染,需进行除臭作业。除臭、钝化需要使用大量药剂,消耗大量水,产生大量高含COD污水。通过分析、实践,优化除臭、钝化工艺,从源头上减少了污水的产生,应用结果显示,经济效益明显。
Puguang natural gas purification plant uses high hydrogen sulfide natural gas as raw material. Large amounts of ferrous sulfide are produced during operation. Before device maintenance, passivation must be carried out; otherwise, when the system is open for maintenance, the contact between ferrous sulfide and oxygen will cause spontaneous combustion, resulting in human injury and equipment damage. In addition,small molecules of sulphur alcohol, ammonia nitrogen and other malodorous substances exist in the system,which will cause environmental pollution. Therefore, deodorization should be carried out. Deodorant and passivation require a large number of related agents, consume a large amount of water and produce a large amount of sewage with high COD. Through a lot of analysis and practice, this paper optimizes the deodorization and passivation process, and reduces the wastewater production from the source. The application results show that the economic benefits are obvious.
Puguang natural gas purification plant uses high hydrogen sulfide natural gas as raw material. Large amounts of ferrous sulfide are produced during operation. Before device maintenance, passivation must be carried out; otherwise, when the system is open for maintenance, the contact between ferrous sulfide and oxygen will cause spontaneous combustion, resulting in human injury and equipment damage. In addition,small molecules of sulphur alcohol, ammonia nitrogen and other malodorous substances exist in the system,which will cause environmental pollution. Therefore, deodorization should be carried out. Deodorant and passivation require a large number of related agents, consume a large amount of water and produce a large amount of sewage with high COD. Through a lot of analysis and practice, this paper optimizes the deodorization and passivation process, and reduces the wastewater production from the source. The application results show that the economic benefits are obvious.
引文
[1]张晓刚,范冬立,刘新岭,等.特大型高含硫天然气净化厂安全放空与火炬系统设计解析[J].天然气工业,2012,32(1):90-93.
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[6]张立胜,裴爱霞.化学清洗工艺技术的研究与应用[J].化学工程与装备,2011,40(1):148-149.
[2]王慧欣.硫化亚铁自燃特性的研究[D].青岛:中国海洋大学,2006:251-301.
[3]刘凡英,廉美容.硫化亚铁自燃的预防[J].清洗世界,2013,28(3):57-60.
[4]王金宏,韩绍贺.浅析检修过程中硫化亚铁自燃事故及对策[J].石油化工安全技术,2004,20(6):62-65.
[5]赵景峰,孙广平,张钢强,等.高含硫天然气净化装置闪蒸气节能工艺优化[J].天然气工业,2013,33(7):108-112.
[6]张立胜,裴爱霞.化学清洗工艺技术的研究与应用[J].化学工程与装备,2011,40(1):148-149.