Friends,
We operate NG fired furnaces to crack petrochemical feedstocks to various products.
Over a period of time, furnace tubes gets coated (inside surface) with carbon.
To remove this carbon and improve thermal efficiency ,
we take this furnace offline (shut off supply and product...
I am inexperienced in Gas flow .
Situation: A gas stream (distilation column overhead-Mixture of ethane/ethylene/H2/C3s/Acetylene) will be used to pressurise a hydrogenation reactor to a certain pressure. There will be an automatic shut-off valve in this line.To prepare datasheet of this...
I am designing a sample cooler. The sample stream will come from discharge PG of the pump and run back to the pump suction.
Since the deltaP is large, the flow will be large as well.
We are going to use a globe valve to control the flow.
How can I determine the flow so there will be enough...
We r redesigning steam desuperheater . The existing Water control valves have eroded as a result of a very high pressure drop. The pressure drop is in the range of 3500 - 4500 KPa.
Is it a good idea to install an orifice u/s of this control valve to induce a certain pressure drop so that...
I am designing a few sample conditioner for boiler steam drum CBD lines(Blowdown).All our boilers are at 4500 Kpag and blowdown line temperature is 260 C.
There will be a sample cooler before actual sampling.
How can I reduce the pressure of the sample so it does not create any hazard for...
I am new designer.
I am designing a sample cooler for Condensate sample. The Tie points for sampling station are discharge and suction of Condensate pump. The condensate is at 90 C and to be cooled upto 25 C. The line run will be around 20 feet (Tieing from discharge Pressure gauge to Suction...
We have a HP steam header through which 4 different plants (plus one Power plant)can either export or import HP steam.Many times when one or all plants r down, the header will be cold(Atmospheric condition).Before any plant can start using steam from power plant it has to be warmed up to a...
We have a vendor's proposal for a new HP steam vent silencer .
The technical specs for which are,
1) massflow -- 50000kg/hr,
2)Steam condition at diffuser(silencer entrance):31 bar
3)There is a control valve u/s of this proposed silencer .Steam conditions u/s of this control valve is...
I am trying to calculate massflow (of ethane)from our supplier.
They measure this flow using coriolis massflow meter.
However the Reference Gravity used for their calculation(in DCS control logic) is not same as we use on our end.Our Reference Gravity is about 10% lower to their RG.
What...
I am a new process designer.I need some help in designing steam desuperheater.
High pressure steam is let down to medium pressure by a control valve. To this medium pressure steam, Boiler feed water (high pressure) is added to resuce the temperature of steam .
I have the BFW pressure and...
i work in plant operations. I am asked to design piping /pumpfor transferring MEG from one storage tank to 2 daily run tanks at controlled flow rates (flow control valve) .
I have never done designing before. I need some help
