FIELD: oil-and-gas industry.
SUBSTANCE: inventions group relates to the method and device generating the cooled hydrocarbons flow. Method uses cooling, at least at two consequential pressure levels. At that in first flow and first flow of mixed refrigerant parts of the first mixed refrigerant in first and second heat exchangers; first and second expansion devices; and first compressor are used to generate flow of first mixed refrigerant. The cooling method is controlled using the improved process controller based on the predictive control model to determine simultaneous control effects for set of the manipulated variables to optimise of at least one set of parameters, during control of at least one set of controlled variables. Set of the manipulated variables includes: composition of first mixed refrigerant; setup of first expansion device and setup of second expansion device.
EFFECT: inventions group ensures optimal control under various pressures of secondary multicomponent refrigerant.
18 cl, 2 dwg
| Title | Year | Author | Number |
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