The liquids are then separated in a fractioning plant into propane, butane, isobutane, methane and natural gasoline.
22.
Installing the high-pressure air storage tanks and new liquid oxygen and isobutane systems are also included in the upgrade.
23.
More recent refrigerators use R600A which is isobutane, and does not deplete the ozone and is less harmful to the environment.
24.
When used as a refrigerant or a propellant, isobutane is also known as "'R-600a " '.
25.
The company markets its fuel, a mixture of propane and isobutane, in canisters that thread to the bottom of the burner.
26.
In the fractionation section the unreacted isobutane is recovered for recycle to the reaction section and remaining hydrocarbons are separated into the desired products.
27.
Cp * 2 ScMe was also used as a catalyst in the formation of isobutane by adding methane to the double bond of propene.
28.
This led to two alternatives, one a blend of propane ( R290 ) and isobutane ( R600a ), and one of pure isobutane.
29.
This led to two alternatives, one a blend of propane ( R290 ) and isobutane ( R600a ), and one of pure isobutane.
30.
Prior to entering the reaction section, the olefin and isobutane feed are treated in a coalescer to remove water, sulfur and other contaminants.
