Un-Answered Questions { Chemical Engineering }

how to improve recovery of product in packed tower(raising ring) recovery of vinyl acetate from VA+WO ( vinyl acetate +waste oil mixture)

2005


wha is Adsorption column chromatography?

1953


what is designing step of heat exchanger

2605


Where the Induced draft, forced draft & balanced draft furnace are to be used? Selection of furnaces are based on which criteria?

3044


how can we calculate reflux ratio? what is difference between internal reflux and external reflux?

4266


Difference between Synthetic foaming agents V/S Protien based foaming agent?

2041


pls send me model paper of NPCIL for executive trainee. and syllabus of executive trainee 2015.

2299


Why in a continuous plant for a Hot standby screw pump system the interlock for auto starting of the other pump ( when the running pump stopped suddenly) is given with header pressure only? why not with flow rate or current of the pump?

1375


solution =2oolitre ,solute =Polyelectrolyte,Solution=water ,we have to prepare 1% solution.how much solute And Solvent?

1754


why screw compressor use for ammonia compression?

1476


Where barrel pump use?

1383


what is R1,R2,R3, R4........?

1467


In Pressure Sfety Valve(PSV) 2" by pass line why given for process units.

1551


Hi, I want to validate an analytical procedure of a specified impurity, but this impurity is unavailable for me. can I use the API instead of impurity in the linearity test? in Which reference can I find such information?

1310


Is four stage graphite steam jet ejector is possible. Any body can provide its design

1455