Midstream

Midstream Glossary

Definitions of words and terms used in the gas processing industry.
For questions regarding incorrect/outdated entries or suggestion for adding additional terms, please contact Martin Erne

Term
Definition
Common Use Examples
corrosion test

A test used to determine the presence or amount of corrosive compounds in a product.

cricondenbar

The maximum pressure for a mixture above which no two phase state can exist, regardless of temperature.

cricondentherm

The maximum temperature for a mixture above which no two phase state can exist, regardless of pressure.

critical density

The density of a substance at the critical temperature and pressure.

critical pressure

The highest pressure at which a substance can exist in the vapor phase.

critical temperature

The highest temperature at which a substance can exist in the liquid phase.

cryogenic plant

A gas processing facility which is capable of producing liquid products at very low operating temperatures.

damper

A valve, or plate, used to regulate the flow of air or other gases.

deaerator

A piece of equipment used for removing air, or other gases, from a process stream, steam condensate, or boiler feed water.

debutanizer

A distillation tower for separating butane and lighter components from the pentane and heavier components.

debutanizer

A distillation tower for separating the butane components and lighter from the pentane and heavier components.

deethanized product

A liquid from which essentially all ethane and lighter compounds have been removed.

deethanizer

A distillation tower for separating ethane and lighter components from the propane and heavier components.

deethanizer
A distillation tower for separating ethane and lighter components from the propane and heavier components.

degradation product

An undesirable substance which is produced because of some reaction such as cracking, dehydrogenation, or polymerization.

degradation product
An undesirable substance which is produced because of some reaction such as cracking, dehydrogenation, or polymerization.

dehydration

The act or process of removing water from a system or flowing stream.

dehydration
The act or process of removing water from a system or flowing stream.

dehydration plant

A facility which contains equipment and apparatus designed to remove water from hydrocarbon streams.

dehydration plant
A facility which contains equipment and apparatus designed to remove water from hydrocarbon streams.

dehydrator

The equipment and apparatus designed to remove water from hydrocarbon streams.

dehydrator
The equipment and apparatus designed to remove water from hydrocarbon streams.

deisobutanizer

A distillation tower for separating the isobutane from the normal butane.

deisobutanizer
A distillation tower for separating the isobutane from the normal butane.

delivery point

The location within a facility or piping system where product changes custody from one party to another.