LPG(propane plus) recovery from refinery off gas
LPG(propane plus) recovery from refinery off gas
(OP)
Does anyone know technologies/processes for LPG recovery from refinery off gas stream? Is there any specific books or website discussing this topic?





RE: LPG(propane plus) recovery from refinery off gas
http://www.bv.com/news/brochures/goc/promax.pdf
RE: LPG(propane plus) recovery from refinery off gas
The most common technology is to use a reboiled absorber operating at about 200 to 300 psig (depending on the desired percentage recovery of LPG). The lean oil is a recycled stream of C5+ from the distillation towers downstream of the reboiled absorber.
Any good refinery simulator program should include a reboiled absorber.
You could also contact any of the major refinery engineering and construction firms and ask them for help.
Milton Beychok
(Contact me at www.air-dispersion.com)
RE: LPG(propane plus) recovery from refinery off gas
RE: LPG(propane plus) recovery from refinery off gas
The reboiled absorber that I mentioned in my previuos reply is exactly what most refineries use in their gas recovery units. The reboiled absorbers in a refinery are usually designed for 90 to 95 percent recovery of propane and 98-99+ percent of butane. Such units are so widely used in refinery gas recovery units that they must indeed be economically justified.
Milton Beychok
(Contact me at www.air-dispersion.com)
RE: LPG(propane plus) recovery from refinery off gas
To verify wether it is economical or not, you should determine how many piece of equipment you need, estimate their sizes, and finally the total installed cost. You of course also know the price of the LPG. if the difference is positive, then it is economical to win back the LPG is negative, it is not.