天然气J-T阀节流制冷工艺脱汞因素探讨
Discussion on J-T Valve Throttling Refrigeration Technology Used for Natural Gas Demercuration
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- 引用格式:
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王用良,李海荣,赵海龙,毛立军,杜通.天然气J-T阀节流制冷工艺脱汞因素探讨[J].天然气与石油,2013,31(4):0.doi:
.Discussion on J-T Valve Throttling Refrigeration Technology Used for Natural Gas Demercuration[J].Natural Gas and Oil,2013,31(4):0.doi:
- DOI:
- 作者:
- 王用良 李海荣 赵海龙 毛立军 杜通
- 作者单位:
- 中国石油集团工程设计有限责任公司西南分公司
- 关键词:
- 天然气；J-T阀；脱汞；VMGSim软件
Natural gas； J-T valve； Demercuration； VMGSim software
- 摘要:
- 为了合理开发含汞气田，优化天然气净化工艺设计，有必要弄清楚汞及其化合物在天然气处理过程中的分布规律及影响因素。利用稳态流程模拟VMGSim软件对含汞气田的J-T阀节流制冷工艺流程进行模拟，研究了原料气汞含量、天然气处理量、乙二醇注入量、原料气组成及J-T阀制冷温度对天然气中汞的脱除率的影响。结果发现：原料气重烃组分越多，J-T阀制冷温度越低，天然气中的汞越易脱除；在J-T阀节流制冷工艺中，乙二醇溶液对天然气中的汞具有较强的富集作用，能有效降低干天然气中汞含量；当原料气中的汞含量小于一定值时可以不设置天然气脱汞装置。研究结果对我国脱汞装置的优化设计具有一定的实用性。
In order to develop natural gas field containing mercury reasonably and optimize natural gas purification process design，it is necessary to make clear the distribution rule and influence factors of mercury and its compounds in natural gas treatment process. Adopted is the steady-state process simulation software VMGSim to simulate the throttling refrigeration process of J-T valve used in natural gas field containing mercury，studied are the effects of mercury content in feed gas，gas treatment capacity，glycol injection rate，feed gas composition and J-T valve refrigeration temperature on mercury removal rate. The results show that the heavier hydrocarbon in feed gas and the lower J-T valve refrigeration temperature，the easier to remove mercury from gas. In J-T valve throttling refrigeration process，mercury can be strongly concentrated by ethylene glycol solution so that mercury content in dried gas can be reduced effectively. If mercury content in feed gas is less than a certain value，gas demercuration unit is not necessary. The study results have a certain practicality in optimization design of domestic demercuration units.
