Dear Sir/Madam
I have a polyester acrylate plant design project, and found the vertical type condenser installed on the top of the reactor(required to recycle the solvent ).
But, I don’t quite understand the reason why the vertical instead horizontal condenser to be installed. In spite of...
Dear Sir/Madam
The vent gas (most of nitrogen, cyclohexane, trace water, and trace ammonia) (flow=12674kg/hr, Tin=70C) entering the shell side of exchanger, and
, the vapor (flow=8880kg/hr, Tout=15C, Pout=0.1barg) and liquid (flow=3794kg/hr).
The non condensable gas is N2 (flow=118kg/hr)...
I am not quite understand where the location "side" of tower of the relief valves are positioned pointed by sshep.
I always see that reflux failure or pump around failure case on the sidestream reflux to the column
due to the loss of cooling to the condenser or loss of power to pump motor or...
Dear Sir/Madam
I have to use pro II to get how much the vapor volume will be flashed in the Tank PSV relief load case.
Ex.
1. component : heavy organic
2. MW = 72.5 mole weight
3. Tank normal operating pressure=7" wc(in H2O), operating temperature=120F
4. Normal liquid flow into tank = 50...
I am not sure my knowledge good enough to comment your question.
Since there is no one would like to comment, I think the k (stoke 's law terminal velocity constant)'s relation with diameter (d)
is k = 13310 * d^2 (d is particle size express in inches).
Thank you.
Dear Sir
I have a simple question in my mind.
As the plant pre commissioning and hydraulic flushing, cleaning, air purging start, the control valve must be taken off, but the temperature transmitter,flow transmitter, control valve actuator are also required to be take off or not?
Thank you...
Dear Sir/Madam
I have created a simpe Excel tool (hardy cross method) to calcuate the water distribution through a network.
But, our project is required to develop a cooling water network with seven coolers(supply and return pressure, delta P / elevation of each cooler and pipe rack) has been...
1.The back pressure regulator valve
The initial position of the valve stem is at open position, as the downstream
pressure increase, the valve will close accordingly till the valve pressure reach its set pressure.
2. The upstream pressure regulator valve
The initial position of the valve stem...
Dear Sir
Thank you very much for your kindly help and reply.
The other trivial question is :
Is it possible that API Plan 53 and ANSI plan 7353 shown
on the same drawing ( please the attached file)?
Is it possible that all instrument tag (TG, PG, LG) required for API plan 53 also fit in the...
allowing 10 psi pressure drop between stages with equal compression ration
per stage, there is formula obtained as flows
Pd1/Ps1 = Pd2/(Pd1 - 10)
where
Pd1 = first stage discharge pressure (psia)
Ps1 = first stage suction pressure
Pd2 = second stage discharge pressure
Thanks.
Dear Sir
Could you please kindly tell that a trivial question?
The difference be twee self flush and external flush?
Plan 01,02,11,12,13,14,21,22,23,41,51,52,61,71,75,76-self flush.
Plan 32,53A/B/C,54,62,72,74-external flush.
And, beside that, there is many cooling method such as K, M...
First approximation of the solid vessel pressure (dilute phase)
delta P_dp = W_dp/A_dp * g/g_c (psi)
where delta P_dp = the dilute phase pressure differential (psi)
W_dp= the dilute phase holdup(lb)
A_dp = the vessel cross sectional area in the dilute phase region (in^2)
g = the acceleration...
Dear eng-tips pro.
I would like to copy the row of number from excel to
word table. For example, I have 100 different number in
100 cell in excel and copy to 90 cell in word's table.
It seems word can't work properly,cause the left 10 cell
in word will have repeated value.(please see the...
Dear Eng-tips members:
Anyone can kindly help me any easy program, excel or... to
determine the velocity of the solid phase in pneumatic
transport?
It seems this solid phase transport in a stagnated dense phase
or dilute phase in pipelines is very complex configuration
or totally different...
Thank you very much for your reply.
Base on this sketch, in my understanding(please advised my
if I am wrong),
1) The ZSO and ZSC can send signal to ESD (saftey interlock) to show the open/close singal on the DCS panel.
2)Reset button located on DCS may be actived by operator to function the...
