A LNG reflux stream is temperature controlled to maintain fractionator overhead temperature.

A LNG reflux stream is temperature controlled to maintain fractionator overhead temperature.

A fraction (27) rich in higher-boiling hydrocarbons is drawn off at the bottom of the column (9) and a fraction (10) rich in lower-boiling compounds is drawn off at the head of the column.

headloss of the column

column temperature, kind of temperature control

The overhead temperature modulation zone includes a temperature regulator for modifying the temperature of the overhead temperature modulation zone.

The temperatures at the bottom and at the top of the column are measured as well as half of the column in order to establish the temperature profile.

To achieve these conditions, the initial temperature and/or the column head pressure must be optimised.

The medium therefore has a higher temperature than the water vapour with which it comes into contact when it is fed into the head of the column in b).

A top product is removed at the top of the separation column, and a sump product is removed from the sump of the separation column or from the sump evaporator.

The cold head temperature sensor senses the temperature of the cold head and generates a temperature signal.

Gases (petroleum), deisobutanizer tower overheads

A wellhead assembly includes a casing head, tubing head, and a production tree mounted on the tubing head.

A column tube (1) has a process fluid input device (41) at the bottom and a movable piston (2) in the top.

The hydrogen chloride formed during the reaction is discharged via the head of the column, the esterification product is discharged from the bottom of the column.