A device and a method for improving start-up operation of a demethanizer of an ethylene device
A demethanizer and conveying device technology, applied in the field of ethylene production equipment, can solve the problems of high temperature at the top of the demethanizer and insufficient cooling capacity of process materials, etc., and achieve the effect of increasing the pushing force, reducing losses and stabilizing operation
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[0024] In this embodiment, the process flow diagram of the refrigerant delivery device used for the start-up of the demethanizer of the ethylene plant is as follows: figure 2 Shown.
[0025] The refrigerant delivery device includes a medium temperature suction tank, a high temperature suction tank, a refrigerant transmission line, a refrigerant liquid phase driving force line, and a refrigerant gas phase driving force line, and the tank bottom of the medium temperature suction tank passes through the refrigerant transmission line Connected to the condenser at the top of the demethanization tower, the bottom of the high temperature suction tank is connected to the refrigerant transmission line through a refrigerant liquid phase driving force line, and the top of the medium temperature suction tank is connected to the cold through a refrigerant gas phase driving force line Agent delivery line; the refrigerant delivery line is provided with a throttling expansion va...
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