轻烃回收直接换热工艺优化研究
Optimization of DHX Process of Light Ends Recovery
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- 引用格式:
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刘祎飞,诸林,王科,龙海洋,蒲黎明.轻烃回收直接换热工艺优化研究[J].天然气与石油,2015,33(2):0.doi:
Liu Yifei, Zhu Lin, Wang Ke, Long Haiyang, Pu Liming.Optimization of DHX Process of Light Ends Recovery[J].Natural Gas and Oil,2015,33(2):0.doi:
- DOI:
- 作者:
- 刘祎飞1 诸 林1 王 科2 龙海洋2 蒲黎明2
Liu Yifei, Zhu Lin, Wang Ke, Long Haiyang, Pu Liming
- 作者单位:
- 1. 西南石油大学化学化工学院，2. 中国石油集团工程设计有限责任公司西南分公司
1.College of Chemistry and Chemical Engineering, Southwest Petroleum University 2;China Petroleum Engineering Co., Ltd. Southwest Company
- 关键词:
- 轻烃回收；DHX工艺；C3收率；优化
Light ends recovery; DHX process; C3 recovery ratio; Optimization
- 摘要:
- 为优化轻烃回收直接换热工艺，考察了原料气预冷温度、膨胀机出口压力及低温分离器出口流量百分比对C3收率的影响。结果表明：随着原料气预冷温度的降低，C3收率和丙烷压缩机功率均先升高后降低；随着膨胀机出口压力越来越大，C3收率先增大后减小，丙烷压缩机功率、外输压缩机功率和膨胀机功率都不断减小；随着低温分离器Ⅱ底部进入重接触塔流量百分比不断增大，C3收率和丙烷压缩机功率先增大后减小。优化后的直接换热工艺原料气预冷温度为-30 ℃，膨胀机出口压力为3.1 MPa，C3收率可达98.00%，对重接触工艺装置的设计具有指导意义。
In order to optimize DHX process of light ends recovery, analyzed is the effect of pre-cooling temperature of feed gas, expander outlet pressure and outlet flow percentage of low-temperature separator on C3 recovery ratio. Analysis results show that C3 recovery ratio and propane compressor power increase at first and then decrease when pre—cooling temperature of feed gas decreases. C3 recovery ratio increases at first and then decreases and propane compressor power, compressor power and expander power decrease continuously when expander outlet pressure increase. C3 recovery ratio and propane compressor power increase at first and then decrease when percentage of flow from low-temperature separator II to DHX tower increases. Through DHX process optimization, C3 recovery ratio can reach 98.00% when pre-cooling temperature of feed gas is -30°C and expander outlet pressure is 3.1 MPa, which has guiding significance for DHX unit design.
