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- W2904615057 abstract "Natural gas, even more biogas, comply with this requirement but gas wells in the most areas are rather economically not accessible due to infrastructural or legislative requirements. The demands of small-scale module natural gas liquefaction plant have been gained considering attentions in recent years. In natural gas liquefaction plant, the core heat transfer equipment - efficient heat exchanger design and cold box systems integration technology promote the system design more compact and efficient. However, traditional plate-fin heat exchanger that be widely adopted as the core heat exchanger has strict purification standard definition, <50ppm for CO2 and <10ng/Nm3 for mercury, to prevent carbon dioxide (CO2) freezing and mercury corrosion inside aluminum material heat exchanger, which cause pretreatment system to large dimension and high cost. In this paper, a novel cold box with brazed plate heat exchangers (BPHE) for small-scale module LNG plant is proposed and designed. Firstly, the methane (CH4) /CO2 gas mixture cooling-down process are experimental conducted in a typical BPHE. The influences of carbon dioxide concentrations on solid precipitation from room temperature to liquid CH4 temperature are investigated, considering the flow resistance and heat transfer efficiency for natural gas liquefaction process. The maximum allowable carbon dioxide concentrations without clogging the flow channel of the plate heat exchanger and deteriorating the heat transfer efficiency under different pressures (2.5-5.5MPa) during the cooling process are obtained. Based on the research results, an optimized technology package of the cold-box has been designed and fabricated to achieve the practical application in a small-scale skid-mounted natural gas liquefaction process including cryogenic CO2 separation. First results and further optimization points will be discussed as well." @default.
- W2904615057 created "2018-12-22" @default.
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- W2904615057 date "2017-05-15" @default.
- W2904615057 modified "2023-09-25" @default.
- W2904615057 title "Brazed plate heat exchanger (BPHE) for small scale natural gas liquefaction plant application." @default.
- W2904615057 doi "https://doi.org/10.18462/iir.cryo.2017.0092" @default.
- W2904615057 hasPublicationYear "2017" @default.
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