apparatus for cooling a cryogenic heat exchanger, method for cooling a cryogenic heat exchanger, and methods for liquefying a hydrocarbon stream

摘要

apparatus and method for cooling a cryogenic heat exchanger, method and apparatus for cooling a cryogenic heat exchanger, employing a programmable controller that receives input signals representing sensor signals from one or more controlled variables in a selected process, and produces control signals to control one or more variables manipulated in the selected process. the programmable controller can run a computer program that comprises a network of at least three modules. the modules in the network are interconnected such as an activating signal received by a second and a third module of the at least three modules corresponds to a communication signal that is generated when the first module of the at least three modules reaches a predetermined asset to be this module .