摘要
长庆气田基于天然气净化及输气的目的,需要对天然气进行加热节流处理,而加热炉的安全使用和热传递效率则直接影响着天然气的安全平稳生产.目前集气站没有采取任何防腐防垢措施,致使加热炉运行过程中腐蚀、结垢严重,造成热效率下降、能源大量浪费.要解决上述问题,延长加热炉的使用寿命,确保天然气的安全平稳生产,就需要对加热炉进行清洗和缓蚀阻垢处理.为此,对加热炉的清洗、钝化及药剂配方、实施方案进行了研究.研究结果表明,由清洗剂WT-325(30%～40%)和缓蚀剂WT-907(3%～5%)组成的清洗液对长庆气田加热炉垢具有很好的清洗效果,清洗液对加热炉的腐蚀速率小于3.27 g/m2·h(国家标准为低于8.0 g/m2·h);钝化剂WT-405形成的钝化膜耐蚀性好,用液氨调节pH值可实现一步完成漂洗及钝化处理,操作简单.
Gas should be heated and throttled for the purpose of purification and transmission in Changqing gas field. The safety and the heat-transferring efficiency of the heating furnaces affect the safe and smooth production of natural gas directly. Since no measures of anticorrosion and anti-scaling are made in the gas gathering stations now, the corrosion and scaling of the heating furnaces are severe, which makes the heat-transferring efficiency dropping and the energy greatly wasting. In order to solve the above-mentioned problem, prolong the operation life of the heating furnaces, and guarantee the safe and smooth production of natural gas, it is necessary to make the corrosion and scale inhibiting treatment for the heating furnaces. So, the study is conducted on the cleaning, passivation and reagent formula for the heating furnaces, and the operational program. The study results show the cleaning solution that consists of cleaning agent WT-325 (30%-40%) and inhibitor WT-907 (3%-5%) has good cleaning effects for the scale of the heating furnaces in Changqing gas field. The corrosion rate of the cleaning solution is less than 3.27g/m2. h. (The state standard is 8.0). The corrosion resistance of the passivating film produced by passivant WT-405 is good. With liquid nitrogen to adjust PH value, the cleaning and passivation treatment can be completed in one step, which operation is simple.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2005年第4期160-163,共4页
Natural Gas Industry
基金
长庆油田分公司资助项目"加热炉系统清洗与缓蚀阻垢工艺技术研究"(CQC-2001-113)的部分研究成果
