Air separation plant basic terminology

Air separation plant basic terminology
rectification Tower, rectification column Tower to fractionate multivariate component mixtures.
cryogenic rectification column A tower where distillation processes are carried out at low temperatures to separate liquid air into oxygen, nitrogen, and other components.
single rectification column The tower to continue single rectification, consisting of a tower and condensing evaporator as equipment.
double rectification column The tower for secondary rectification, equipment consisting of the lower tower, the upper tower, and the condensing evaporator.
A column in which air is initially separated in a two-stage distillation.
upper column A tower in which air is used for final rectification in a two-stage distillation.
Distillation column for high purity oxygen.
A distillation column for nitrogen nitrogen column was prepared with high purity nitrogen.
sieve tray (perforated traycolumn) sieve-tray column (perforated traycolumn)
Inside the sieve tray, rising steam through the sieve and liquid contact, gas-liquid two phases of mass transfer and heat transfer tower.
The bubble cap tray is installed in the bubble cap tray, and the rising steam passes through the bubble cap tooth gap to contact the liquid, and the gas-liquid two phases are used for mass and heat transfer.
A column packed with a packed column through which gas and liquid transfer mass and heat.
A rectifying section of the justify section used to continuously increase the content of the low-boiling fraction.
The stripping section is used to continuously increase the stripping column portion of the high boiling fraction.
The tray makes the gas-liquid phase carry out the mass and heat transfer process to separate the gas-liquid mixture components.
The liquid flows into the tray of the overflow tank in circular flow.
A tray into which liquid flows in opposite or opposite directions into an overflow tank.
bubbke cap tray A tray for a number of bubble caps arranged in regular order.
sieve Plate sieve tray has trays evenly covered with small holes.
overflow downcomer The channel through which liquid flows from one tray to the next.
There is only one flow tank on each tray.
There are two overflow tanks on each tray.
There are two overflow tanks on each tray.
There is a certain height of liquid layer on the maintenance tray, and a baffle is added before the liquid flows into the overflow tank from the tray. This baffle is called overflow weir.
The gas-liquid two phases increase the contact area to carry out the mass and heat transfer process to separate the gas-liquid mixture components.
The heat exchanger is a equipment used to complete the heat exchanger between hot and cold fluids.

The plate-fin heat exchanger is composed of a complete array of basic components such as baffle seals, fin guides, etc., which are stacked and arranged in different ways, brazed into a whole (plate beam), and equipped with a head and nozzle at the fluid inlet and outlet.
The core of the plate bundle is composed of the basic components such as separator, seal, fin and guide plate, which are stacked and arranged in different ways to form an outer whole by brazing.
A metal plate between two runners, also called a primary heat transfer surface.
side bar Metal inserts arranged on either side (end) of the runner fins of each layer for sealing.
A secondary surface on which heat is exchanged between hot and cold fluids.
plain fin A fin for a smooth rectangular channel with a small section made from a thin sheet of metal.
perforated fin 3.8 perforated fin Perforated fin perforated flat fin.
serrated fin A fin in which the fins are cut and bent at regular intervals to stagger the flow passage.
Corrugated fin corrugated fin stamping waved a fin.
distributing finning fin distributes fluid evenly to the flow passage of the fin or is pooled in the distributing head. It is a kind of large-pitch porous fin.
Switch switch plate-fin heat exchanger (heat exchanger plate - fin type reversing heat exchanger
Air and dirty nitrogen regularly compete for heat exchange, and remove moisture and carbon dioxide impurities in the air heat exchanger.
Switching plate-fin heat exchanger
The warm section of plate-fin type
reversing heat exchanger
The switching plate-fin heat exchanger group is generally bounded by the circulation air outlet, and the section with higher temperature is called the hot section.
Switching plate-fin heat exchanger
Cold period of cold section of plate - fin type reversing
heat exchanger
The switching plate-fin heat exchanger group is generally bounded by the circulation air outlet, and the section with lower temperature is called the cold section.
The main heat exchanger in the air exchanger exchanger used to recover the cold amount of product gas to cool the raw air.
A heat exchanger where hot and cold fluids can transfer heat through the wall of a tube.

A tubular heat exchanger consisting of a number of tubes fixed in an upper and lower parallel plate and mounted in a cylindrical shell. One of the fluids is inside the tube
Flow, another fluid flowing between the tubes.
A tubular heat exchanger in which a number of tubes fixed on a tube plate are wound in layers on a central tube, with pads separating the tubes at each layer (the pad thickness is determined to form a gas channel between tubes) and the tube bundles are close to the outer tube. One fluid flows in the tube and the other fluid flows between the layers of the coil.
subcooler A heat exchanger that further cools saturated liquids without phase transition.
liquid air subcooler A heat exchanger in which oxygen-rich liquid air at saturation temperature is further chilled without phase transition.
liquid nitrogen subcooler enables further cooling of liquid nitrogen at saturation temperature without phase transition heat exchangers.
liquid air and nitrogensubcooler can further cool oxygen-rich liquid air and liquid nitrogen at saturation temperature without phase transition.
liquid oxygen subcooler A heat exchanger that further cools liquid oxygen at saturation temperatures without phase transition.
A heat exchanger that liquefier gas.
oxygen/air liquefier makes use of the cool amount of nitrogen regliquefier under a tower of air liquefier to recycle the liquefaction contaminator.
pure nitregen/air liquefier uses the air liquefier in a heat exchanger to recover the cool amount of regurgitated oxygen.
waste nitrogen liquefier /air liquefier uses lower tower of air to recycle the cool amount of sewage nitrogen, the air liquefier in a heat exchanger.
A condenser condenser, a heat exchanger that condensed steam into a liquid.
Evaporator vaporizer A heat exchanger that vaporizes liquid into gas.
evaporator condenser/evaporator evaporator provides reflux liquid and rising steam for distillation tower, accompanied by the change of fluid collection state.
liquid jet evaporator A device that uses steam to directly heat the discharge of liquid, so that it quickly vaporize.
A heat exchanger that cools liquid, usually with water or air as coolant.
precooler A heat exchanger that precools raw air by using the cooling capacity or external cooling capacity of the backflow gas.
regenerator A periodically alternating regenerative heat exchanger used for heat exchange between hot and cold liquids through fillers as an intermediate medium to remove moisture and carbon dioxide from the air.
filter A device for removing solid particles and oil mist from liquids or gases.
air filter A device that mechanically filters solid particles from the air.
dry band filter A device that uses a plush fabric woven of nylon or cotton or wool fibers to filter dust and oil mist from the air.

The dust contained in the air is attached to the oil film on the net when it passes through, and the attached dust is washed off and re-coated with a layer of oil film when it passes through the oil tank by rotating with the chain.
A device for filtering dust and oil mist entrained in the air with a bag type filter cloth.
raschig ring filter is a device for filtering solid particles in gas, which is equipped with an insert box of raschig ring in a steel shell and coated with a low freezing point filter oil.
The carbon dioxide filter is a source of moisture dioxide dioxide, which is used to filter silica gel and air from the lower tower.
expanded air filter installed in front of the machine, used to filter the air carbon dioxide particles and solid particles of equipment.
Wateractivated on the adsorption system to remove acetylene.
liquid air wateractivated on the adsorption device to remove impurities in the fluid.
liquid oxygen adsorption on the liquid oxygen selective device to remove acetylene on the liquid oxygen.

On the carbon dioxide wateractivated silica gel, the low temperature adsorption method on the net removal of carbon dioxide in the air equipment (generally used in the middle of the air accumulator pumping low pressure air separation equipment).
A device that removes impurities from a gas by adsorption or catalysis.
A device used to remove moisture in the gas with desiccant.
separator A device used to remove water and oil mist from compressed gas.
A device used to separate water droplets or mist droplets from compressed gas.
A device used to remove water and oil mist from compressed gas.

nitrogen precooling system with water and impure nitrogen
A heat exchanger used to cool the raw air by recovering the cool amount of backflow nitrogen or dirty nitrogen. It is composed of water cooling tower, air cooling tower and its auxiliary equipment.
A device that makes full contact with water in the tower by the low-temperature and unsaturated dirty nitrogen discharged from the air separation equipment to reduce the water temperature.
A device that uses cooler water to cool compressed air.