CIESC Journal ›› 2021, Vol. 72 ›› Issue (S1): 437-444.DOI: 10.11949/0438-1157.20201553
• Process system engineering • Previous Articles Next Articles
XU Jianwei(),LIANG Yingzong(),LUO Xianglong,CHEN Jianyong,YANG Zhi,CHEN Ying
Received:
2020-11-02
Revised:
2021-01-19
Online:
2021-06-20
Published:
2021-06-20
Contact:
LIANG Yingzong
通讯作者:
梁颖宗
作者简介:
徐健玮(1997—),男,硕士研究生,基金资助:
CLC Number:
XU Jianwei, LIANG Yingzong, LUO Xianglong, CHEN Jianyong, YANG Zhi, CHEN Ying. Integration and analysis of PRICO-membrane distillation seawater desalination system[J]. CIESC Journal, 2021, 72(S1): 437-444.
徐健玮, 梁颖宗, 罗向龙, 陈健勇, 杨智, 陈颖. 液化天然气深冷-膜蒸馏海水淡化系统集成与分析[J]. 化工学报, 2021, 72(S1): 437-444.
设计参数 | 数值 |
---|---|
天然气处理量 | 1 kmol/s |
天然气压力 | 5.5 MPa |
气态天然气温度 | 25℃ |
液化天然气温度 | -155℃ |
制冷剂流量 | 2.4 kmol/s |
冷凝器出口温度 | 25℃ |
节流阀入口温度 | -155℃ |
节流阀出口温度 | -167℃ |
冷海水温度 | 20℃ |
淡水产品温度 | 25℃ |
热海水温度 | 70℃ |
冷淡水温度 | 30℃ |
膜热侧流速 | 2 m/s |
膜冷侧流速 | 2 m/s |
最小换热温差 | 5℃ |
Table 1 Main design parameters of system
设计参数 | 数值 |
---|---|
天然气处理量 | 1 kmol/s |
天然气压力 | 5.5 MPa |
气态天然气温度 | 25℃ |
液化天然气温度 | -155℃ |
制冷剂流量 | 2.4 kmol/s |
冷凝器出口温度 | 25℃ |
节流阀入口温度 | -155℃ |
节流阀出口温度 | -167℃ |
冷海水温度 | 20℃ |
淡水产品温度 | 25℃ |
热海水温度 | 70℃ |
冷淡水温度 | 30℃ |
膜热侧流速 | 2 m/s |
膜冷侧流速 | 2 m/s |
最小换热温差 | 5℃ |
物质 | 摩尔分数 | ||||
---|---|---|---|---|---|
N2 | CH4 | C2H4 | C3H8 | C4H10-1 | |
天然气 | 2.8% | 89.8% | 5.5% | 1.88% | 0.1% |
混合制冷剂 | 12.53% | 19.09% | 32.96% | — | 35.42% |
Table 2 Natural gas and mixed refrigerant components
物质 | 摩尔分数 | ||||
---|---|---|---|---|---|
N2 | CH4 | C2H4 | C3H8 | C4H10-1 | |
天然气 | 2.8% | 89.8% | 5.5% | 1.88% | 0.1% |
混合制冷剂 | 12.53% | 19.09% | 32.96% | — | 35.42% |
项目 | 数值 |
---|---|
电价Pe/(USD/(kW·h)) | 0.13 |
清洁周期Tcl/d | 5 |
清洁费用Ccl/( USD /次) | 1.17 |
保养费Cm/( USD /a) | 0.025(chx+cpump) |
保险费Ci/( USD /a) | 0.01cca |
Table 3 Operation costs and parameters of main parts of MD process[24]
项目 | 数值 |
---|---|
电价Pe/(USD/(kW·h)) | 0.13 |
清洁周期Tcl/d | 5 |
清洁费用Ccl/( USD /次) | 1.17 |
保养费Cm/( USD /a) | 0.025(chx+cpump) |
保险费Ci/( USD /a) | 0.01cca |
设计变量 | 数值 | 设计变量 | 数值 |
---|---|---|---|
膜蒸馏效率 | 58.60% | 产水量 | 5.78 m3/h |
冷凝器换热面积 | 274.83 m2 | 压缩机功耗 | 20.89 MW |
冷却器换热面积 | 217.98 m2 | 余热量 | 35.01 MW |
膜面积 | 159.86 m2 | 冷凝器对数平均温差 | 25.48℃ |
水泵总功率 | 33.70 kW | 压缩机出口压力 | 1.5 MPa |
膜蒸馏热侧海水流量 | 152.07 kg/s | 节流阀出口压力 | 0.168 MPa |
膜蒸馏冷侧淡水流量 | 154.30 kg/s | 产水成本 | 1.98 USD /m3 |
Table 4 System design variables
设计变量 | 数值 | 设计变量 | 数值 |
---|---|---|---|
膜蒸馏效率 | 58.60% | 产水量 | 5.78 m3/h |
冷凝器换热面积 | 274.83 m2 | 压缩机功耗 | 20.89 MW |
冷却器换热面积 | 217.98 m2 | 余热量 | 35.01 MW |
膜面积 | 159.86 m2 | 冷凝器对数平均温差 | 25.48℃ |
水泵总功率 | 33.70 kW | 压缩机出口压力 | 1.5 MPa |
膜蒸馏热侧海水流量 | 152.07 kg/s | 节流阀出口压力 | 0.168 MPa |
膜蒸馏冷侧淡水流量 | 154.30 kg/s | 产水成本 | 1.98 USD /m3 |
项目 | 投资费用/ USD | 项目 | 投资费用/ (USD/a) |
---|---|---|---|
膜蒸馏模块 | 63944 | 保险费 | 2226 |
冷凝器 | 99145 | 清洁费 | 705 |
冷却器 | 93258 | 保养费 | 9248 |
水泵 | 187610 | 膜蒸馏部分电费 | 35048 |
Table 5 Investment costs of each part of system
项目 | 投资费用/ USD | 项目 | 投资费用/ (USD/a) |
---|---|---|---|
膜蒸馏模块 | 63944 | 保险费 | 2226 |
冷凝器 | 99145 | 清洁费 | 705 |
冷却器 | 93258 | 保养费 | 9248 |
水泵 | 187610 | 膜蒸馏部分电费 | 35048 |
水处理技术 | 产水成本/( USD /m3) |
---|---|
多效蒸馏 | 0.7~3.5 |
多级闪蒸 | 0.9~4.0 |
压气蒸馏 | 1.0~3.5 |
反渗透 | 0.5~3.0 |
二次反渗透 | 0.2~1.8 |
PRICO-膜蒸馏 | 1.98 |
Table 6 Comparison of water production cost of PRICO-MD seawater desalination with existing technology[29-30]
水处理技术 | 产水成本/( USD /m3) |
---|---|
多效蒸馏 | 0.7~3.5 |
多级闪蒸 | 0.9~4.0 |
压气蒸馏 | 1.0~3.5 |
反渗透 | 0.5~3.0 |
二次反渗透 | 0.2~1.8 |
PRICO-膜蒸馏 | 1.98 |
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