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...
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.
