An air cooled, finned exchanger in amine regenerator overhead cooling service has reached the end of its useful life and needs replacement. The tube fabricator offers embedded, extruded, wrapped, or serrated-extruded. Does anyone have experience with the serrated extruded fins? By their own...
I am looking for lessons learned regarding the use of a membrane separator for hydrogen recovery of FCC and coker fuel gas. Our excess fuel gas is sweetened, dried and sold to a utility as pipeline grade. We would like to reduce the hydrogen content. Any experience with these, good or bad, in...
we are designing a steam desuperheater ahead of a reboiler. 600 psig, 700 degF steam is being let down to 300 psig. Would like to find a desuperheater that doesn't use a external or pumped condensate, rather educts the reboiler's condensate. One design requires the reboiler to be 25 feet...
We would like to cool coker cutting/quench water below the current 120 - 130 degF to reduce deheading vapor cloud and hot spot eruptions. 90 degF is the target. We are considering a stand alone, direct contact cooling tower, and recycling back to the coke pit maze. Is microbio fouling of the...
What happens to formaldehyde in WWTP feed? What is the source of expert data? August '99 Chemical Engineering described a process that suggested the destruction of cyanide in a WWTP if influent is pretreated w/formaldehyde first at ambient conditions. What happens to the excess or unreacted...
