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How we can calculate per pass conversion in the Hydrocraker unit?

How I can calculate the volume of shell and tube heat exchanger?

How I can calculate tank inventory for straight run gas oil, light Coker gas oil and Coker naphtha for DHT unit. Please can you give me example in excel sheet?

Which is the more accurate,not hunting and good for turning to control the firing on heater and why? 1.connecting temperature controller with fuel gas controller. 2.connecting temperature controller with low...

Thanks a lot georgeverghese for your response on the topic. I could understand and feel the concept now.

Thanks a lot Dear So I have to combine Sketch B and C.

Thanks dear Appreciate your efforts to help me Tomorrow I am waiting for your sketch Please in your sketch you have to mention individual spillback for third stage and PC located at third stage suction.

Thanks Dear I am so happy with your answers But there is protection controller for 3rd stage suction by individual spillback .

Hi Dear, Thanks for your fast response Which I understand from sketch if PC20 pressure falls below set point output has to be increased and PV for PC10 also PV will come down because both PC10 and PC20 are taking PV from same line .So if PV for PC20 falls down same while PC10 which is...

Hi georgeverghese I agree with you PC100B should be reverse action and PC225 should be Direct acting.And what about PC100A and PC200 which one is must be Direct action ? Because PC200 set point is output of recycle gas compressor suction (Hydrocraker system pressure PC305) For example if...

Dear georgeverghese There is to pressure controller located at make up gas compressor KOD drum .PC100A set with low set point and PC100B set with low low set point . If the first stage compressor suction pressure falls too low, suction line pressure controller PC100A will open the common...

We have three make gas compressor reciprocating type Three stages .it has individual and common spillback we are supplying hydrogen to Hydrocraker from last stage and from second stage to DHT .which is better to to control pressure for both low selector or high selector with spillback and...

I want guidelines for heaters dry out.How much temperature should be in firebox ?we can do dry out with media (steam,nitrogen and oil) or with out and why?

We have make up gas compressor reciprocating with three stages and three trains.suction pressure 22 bar and discharge pressure 185 bar It has common and individual spillback.second stage is fed to diesel unit. What is the purpose of individual spillback and how we can control the pressure to...