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Dear Friends I am working in a Oil Gathering center where hydrocyclone package (Petreco) was installed 5-6 years ago, but not utilised properly. The hydrocyclone and Deoiling vessel (Induced Gas Floatation Unit (Fuelgas)) are designed to handle, say 10000 BPD of oily water from a 3-ph separator...

Dear Friends! Happy Morning! We have two Reciprocating Compressor trains which are not working for the past two years, in our Gathering Centres. In this compressor train, i found one control logic that controls the pressure of Final Oil accumulator of the third stage (KOD)with the make up gas...

Dear Friends! I am looking for flashpoint data of Crude Oils in Kuwait. This is asked for transport of crude oil samples by flight admin. In the plant, though we have MSDS data, flash point is missed out in that. Can anybody throw some light on this? Our API gravity remains in the range of...

Dear Friends! I want to study the basics of hydrotesting of pipelines and equipments, like how pressure raises inside a pipeline filled up with water though water is incompressible... Can you suggest some website to enlighten me in this regard, thanks in advance, yours truly, A.Thirumaran

Dear All! I would like to learn about the two phase transient flow calculations and simulations. I need the expert's opinion on where to start for the same. Thanks for everything you do, Cheers ATM

Dear All! Can you please help me to understand Hot Pinch and Cold Pinch temperatures. What is the relation between them and the minimum hot-stream outlet temperature possible? This doubt came to me in light of doing an exercise in Hysys, where I encountered temperature cross problem, and it...

Dear All! Good Morning! I have a doubt on aviation turbine fuel specifications. We have a specification for the conductivity. The conductivity is to be maintained between the range 50 - 450 picosiemens / metre. While I can understand that the lower range of conductivity is to ensure...

Dear all! We have a merox reactor, which is used to make ATF. I want to know what is peroxide number and how it is determined? What is the significance other than potential gum formation? Thanks for everything you do, cheers atm

please explain me in NHT whenever we increse the pressure of product seperator recycle gas flow(tn/Hr) increses.

Dear All! Can anybody help me to understand why we get water condensate in Naphtha stabilizer that operates at 8.5 kg/cm2 (g) and a top temperature of 85 Deg.C ? To an extent, I can understand that water when present in small quantities, say 100-200 ppm in Naphtha, it will be carried by LPG...

Dear All! Recently, during a discussion with a industrial intern in our refinery, he posed a question to us. It goes like this. "Why we have condensers (trim coolers) with cooling water after air fin coolers in Crude overhead, Pre-Fractinator overhead, Reformer reactor effluent cooling...

Dear All! Recently I started working on a semi-regenerative catalytic naphtha reforming unit. There i am told by my seniors that the moisture in the recycle gas would be 4 - 5 times that of the moisture in the feed naphtha... When i pestered for the reasons, they could not reason it out but...

Dear members! I need information on online H2S analysers to check the presence of h2S in ATF. If anybody has come across such analysers or used in their job, please respond. I also wud like to know an approximate value of the analyser too. Thanks in advance, Chillboy

Dear Participants! We have a problem in our atmospheric column. During rainy seasons, crude change over from Lighter crude to heavier crude, we are observing top temperature is higher than our heavy naphtha draw temperature. There are 4 trays between them. We have a heavy naphtha pump around...

Dear Participants! Are there two types of emulsions formed in mixing valves, say "Oil in Water" and "Water in Oil"? Which one is predominant and how they help in desalting? Thanx for ur comments and inputs A.Thirumaran

Dear participants1 I need your expertise for a clarification in vacuum systems with surface condensers. My adjacent unit has a reformer and they run a steam turbine driven compressor. The steam after expansion said to condense in vacuum. I cannot convince myself to believe that steam to...

Dear Friends! I would like to know any alternative arrangement/mechanism to find the levels of emulsion, water and crude in a desalter rather with the old practice of using try-cocks. If any body practise such systems or aware of, pls throw some light over here... advance thanx for your...

Hi All! I would like to know and learn how the range of steam flow to product strippers are fixed and also the flow of steam required for stripping in crude fractionators? I also want to know how steam affects flash point of products. Is there any empirical relation ship existing? Advance...

Can any body suggest how to derive and relate the pressure drop between downtakers(water) and uptakers(steam and water) and the steam temperature in a boiler that is under natural circulation? If somebody can help by suggesting a book also, it is welcome...Advance thanx...

Dear Professionals! I wud like to know what is represented by 'D' in ASTM D 86 standard, in fact in all ASTM standards the number given is pre-fixed by a alphabet. can any body throw me light on this?? Advance Thanx cheers atm_chill