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Dear Jesspo In layout B, location (a) is easy in since the pump suction pressure might be low enough to suck the raw material out of the truck into the system. However there are many unseen risks being taken. First, many bulk deliveries are made by applying pressure load of N2 or compressed...

Dear I am not sure that your case is applicable to my suggestion. The cases below may be applicable to the determination of relief loads caused by instrument air failure: If:1.Instrument air is provided by a single compressor or 2.No emergency supply is provided Complete instrument air...

Hi Latexman Thanks for reply. This fluid on the other side of this HX is "Ammonia vapor" from the NH3 compressor discharge side, and this is the Ammonia vapor recovery system. The vapor flow rate is about 413 kg/hr and the ammonia vapor inlet pressure is about 2.19 barg and set pressure is...

Dear Sirs The psv is instaled on the cooling water supply side , is any thermal expansion scenario analysis required? And which catagories is prefer in this case, (1). simple hydralulic expansion with a liduid only relief. (2) thermal expansion of a liquid with vaporization at relief case, (3)...

Dear Sir/Madam Layout A/B are two different types of unloading system. Could you please help me out to find out what theese two systems's advantange and disadvatange? Note. In layout B, (a),(b), ( c) are different ports of truck delivery load to storage tank, And it seems b, c is perferable...

Dear Morten thank you for your reply. But I would like to give more detail about the drum filling description. The drum fillers feature conveyors to bring empty drums into the filling station and to subsequently discharge full drums; a lance to direct fluid flow; an electronic scale to control...

Dear There are about 400 ammonia plants globally. Most of the plants utilize natural gas as feedstock and fuel in ammonina production. Although several processes have been developed for producing ammonia, the predominant processing unit layout inclueds natural gas desulfurization, primary...

Dear Sir I would like to bother you some simple questions about the drum filling. Here is my description about Drum filling system : Most product (Ethoanolamines product) will be stored in drum. For drum filling, Ca. 205L capactiy drum will be used, and Product filling will be execute at...

Control valve seat leakage testing is accomplished in accordance with FCI 70-2. Please refer his document, within this, there are six leakage classes defined ranging from Class I ,most allowable leakage, to Class VI ,the tightest requirement. The leakage class most often specified with hard...

Dear Sirs I am sorry to bother your this simple and silly question. I have a Back pressure regulator and bypass with temperature control valve, but I don't sure that why this PCV in this bypass location and how to decide this PCV upstream op? thank you very much.

Dear Sir Please forgive me because last time I put my words wrong. The PCV upstream pressure should be 7 barg and downstream press should be 2.7 barg. And the TV-A upstream pressure is 5 barg and downstream press is 4.3 barg. And, I guess that PCV set pressure is 7 barg. If upstream pressure...

Not sure you may use steam to purge this deposit material out.

Dear Sir I am sorry to bother your this trivial. I would like how to set the upstream control valve OP (Please see the attached excel file) The control valve TV-B upstream is set 7 barg (refer from CV datasheet), but from its upsream product cooler datahseet, I only got 5 barg. It seems...

Amine from ammonia stripper bottom feed the Drying column under flow control with reset from the ammonia stripper bottom level. The column receives also the amine rich condensate from the Ejector hot well under flow control and reset by the level. The amine rich condensate is pumped to the...

Put a group of orifice plates with any combination are used when the required pressure drop across one or more orifice plates would cause cavitation to occur. Put additional orifice plates reduce the pressure drop across each plate to prevent cavitation.

A group of orifice plates lined up in series with any combination can be used when the required pressure drop across one or more orifice plates would cause cavitation. Put more orifice plates reduce the pressure drop across each plate and it may help to prevent cavitation.

Dear Sir I have two control scheme need your help. Fig.2 (condensate flow control), there is a temperature controller(TIC) directrly regulates Valve B, and an increase in steam could open the valve wide even if only a little condnsate were held back in the exchanger. My following question is...

Dear Sir There is EO(ethylene oxide) feeding from other plant to EO surge drum (simple drawing attached in the file). I was wonder why there is a small brach line on the p&id, and it was written in the note that EO should be to provide "minimum dead leg" and any branch line should provide a...

Dear Sir thank you for your reply. what if the 2" gate valve with 300lb flange on the 150 lb pipe, so we can still take the 150 lb pipe in replace of this 300 lb gate valve cause it is 2" valve and threaded valve.

Dear Sir I have a ball valve with flange rating's 300 LB, and would like to take the valve off in replace with a spool to washing the pipe. It's a stupid question that I should take 150 LB spool or 300 Lb spool by the way the pipe class is 150 LB. Thank you so much for your kinkd help.