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)...
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...
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...
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...
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...
Dear members:
A gas feed by varying the compressor discharge pressure by
spillback control on compressor.
The flow from compressor discharge drum
is measured by FT and temperature and pressure compensation (on Train 1 & Train 2 line)
If the pressure is rising, too much gas is being...
Dear Memebers:
A conductivity analyzer indication of water quality located on the downstream low pressure steam condensate. First, I am not sure this conductivity measurement is contacting or inductive type. This analyzer installation on the P&ID seems dilemma for me.(Please see attached...
Dear eng-tips members
The 14 tons of hot water supply enter to the reboiler and
return through two valves in parallel,and the pipe size is 8" the hot water return header.
And, the split range control is used here to control flow
in a broad range.
Our leader suggest that the low range valve...
There is Low pressure hopper (above), and high pressure hopper (below), with their XV-00A(loading inlet valve), XV-00B (vent valve).
As start of the transfer, open XV-00A to allow particle to enter the low pressure hopper, then transport gas vent to collection header.
And, XV-00C, XV-00D are...
Dear Sir
The cyclone reactor with DPT and its tube (attached drawing)
I wonder is the process connections should be at least 1/2" NPT and instrument should be equipped with socket or yoke for mounting on a 2" pipe. A yoke is not required if instrument is mounted on a
vessel or process line...
Dear members:
For exchanger where the low pressure side design pressure is
at least two-third(or 10/13 from our senior engineer
) of the high pressure side design pressure,
the tube rupture case can be ignored if the upstream and downstream
equipment in the pressure system is capable of...
Dear Eng-tips member :
A distillation column outlet with PT and FT connected through interlock
,PIC, FIC to control the FV (hot water supply to the vertical re boiler).
The question in the following is hope that you can help:
1. As the flow signal low low, and pressure signal high high, it...
Dear eng-tips member
I found a "Mo3" (express as middle of three values is used for alarms and downstream function ) located outside of the instrument circle in our project P&ID, but I don't get it why this should be
there, and it seems unnecessary. Could you please give me some
good...
Dear Sir/Madam
I have some stupid question need to bother you.
A control logic and soft link query is in the following.
1.As outlet flow of the he STC vaporizer is low, it will initiate
the interlock to stop the HCl feed from the compressor, but I don't know how this two action can couple...
