Gaseous refinery products include hydrogen, fuel gas, ethane, propane, and butane. Most of the hydrogen is consumed in refinery desulfurization facilities, which remove hydrogen sulfide from the gas stream and then separate that compound into elemental hydrogen and sulfur; small quantities of the hydrogen may be delivered to the refinery fuel system. Refinery fuel gas varies in composition but usually contains a significant amount of methane; it has a heating value similar to natural gas and is consumed in plant operations. Periodic variability in heating value makes it unsuitable for delivery to consumer gas systems. Ethane may be recovered from the refinery fuel system for use as a petrochemical feedstock. Propane and butane are sold as liquefied petroleum gas (LPG), which is a convenient portable fuel for domestic heating and cooking or for light industrial use.
APSC Notes brings Prelims and Mains programs for APSC Prelims and APSC Mains Exam preparation. Various Programs initiated by APSC Notes are as follows:-- APSC Mains 2024 Tests and Notes Program
- APSC Prelims Exam 2020- Test Series and Notes Program
- Apsc Prelims and Mains 2024 Tests Series and Notes Program
- Apsc Detailed Complete Prelims Notes