Plant start and operation method for liquefaction of gas product

摘要

Problem to be solved: to provide a plant for starting and operating a plant for liquefaction of a gas product and a plant for liquefaction of a gas product.A method of electrically connecting the variable frequency drive 6 to the motor 5 of the first mechanical stringing 2a andIncreasing the speed of the motor of the first mechanical string to the first predetermined threshold andElectrically disconnect the variable frequency drive from the motor of the first mechanical string andIncludes the step of electrically connecting the variable frequency drive to the motor of the second mechanical string2b;The first predetermined threshold isIs a function of frequency of power supply grid 7.The variable frequency drive can be switched between the strings during operation of the plant, depending on the process requirements.Diagram