Sub-Product

Crude ethylene is dry gas with a high concentration of ethylene equal of higher than 40%.

The source of the dry gas can be a gas-phase composition which is not subjected to cryogenic processing by a methanol-to-olefin and light hydrocarbon cracking device, and can also be a mixture of other sources, and other compositions in the mixture can be H₂, methane, ethane, nitrogen, propane, propylene and the like.

Typical mass and volume fractions of compounds in a crude ethylene example from China are:

Source: 和成刚 et al., CN107827692B, Filling Date 28^th Apr 2017, Method for producing ethylbenzene by using high-concentration ethylene gas, Assigned to Changzhou Ruihua Chemical Eng & Tech Co ltd.