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Hi, Why is Ammonia injected to the reflux from CDU? Any specific reasons. Thanks

Hi Does all Chemical desalters have both surfactants and demulsifiers injected into them? What does surfactants and demulsifiers do?

Hello What are the units in a refinery where sulphidic corrosion occurs?

Hello Have anyone heard of hydrate formation in refinery fuel gas? I assume that as the crude oil leaves the desalter, it is then dehydrated before being sent to distillation column. If there are any water present in the fuel gas exiting the DU it is then dehydrated or dried. Is my...

Can anyone help me understand what this Indian Boiler regulatio (IBR) does? How do we get approval for control valves for IBR?

Can anyone tell me what the difference is between DIN flange and EN flange? Are they one and the same?

Does someone have access to Masoneilan refining handbook and can you share it?

Please help me understand when a Separator is used and when a Stripper is used in refinery. My understanding is both have similar operations.

Can anyone help me understand the difference between Pump governor and self operated regulator?

All I did some research and found that 1. CHPS, HHPS, Sour water letdown valves are critical. Also the pump spill back valves are critical. 2. Check this website for a process flow diagram for gas oil hydrotreating...

"In a CCR unit the liquid from a separator unit is fed to a stabiliser unit. In the stabiliser unit the reactor effluent is separated into vent gases, light end liquids and high octane reformate product streams" can anyone tell me how is separator different from a stabiliser unit?

Nagara: I am reading this after a long time. I will give you my suggestions. A vent valve need not have a 85dB(A) limit. The OSHA requirement, specifies 85dB(A) for a 8 hr exposure. Vent valves are always located several meters away from the vicinity of people working in a plant. Also they are...

Can anyone tell me what the difference is between a fractionator unit and a stripping column?

The valves which I am looking for are: 1. Stripper reboiler pump spillback 2. Stripper bottoms to stripper reboiler pass 3. Stripper reboiler pump discharge 4. Stripper receiver sour water 5. Stripper bottoms bypassing feed stripper bottoms exchanger 6. Separator bottoms to effluent...

I have a enquiry for valves for hydrotreater unit. I need to find out the location of valves to understand why some of them are critical!!

Dear All I am looking for piping and instrumentation diagram for a hydrotreater unit to locate the presence of critical valves. Can anyone suggest a website where I can find one? Thanks