Affecting Factors for Liquefaction and Separation of Propane Mixed Refrigerant Cycle of Hydrogen-blended Natural Gas
The commonly used hydrogen transportation methods of trailers and tankers have small transportation volume and high investment cost.Taking natural gas as the carrier of hydrogen transportation and using natural gas pipeline network for transportation is an important way to realize large-scale and long-distance transportation of hydrogen.Hydrogen natural gas can be used directly or separated and then reused.The paper builds the liquefaction and separation process model of hydrogen-blended natural gas using ASPEN HYSYS software,determines propane mixed refrigerant cycle liquefaction and separation as main process by comparing all kinds of liquefaction and separation processes of hydrogen-blended natural gas.It analyzes power consumption and specific power as well as hydrogen separation rate and natural gas liquefaction rate according to the feed gas with different hydrogen blend rate and at the conditions of the different inlet flow rates,pressures,and temperatures and draws such conclusions as the higher the hydrogen separation rate and the lower the natural gas liquefaction rate with the higher hydrogen-blended rate and increasing the feed gas pressure and flow and reducing feed gas temperatures could reduce the process power consumption and optimize the liquefaction process.
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维普
