Recent content by coolcando

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 in Northern Cananda . We use glycol tracing to keep cooling water and other process lines warm so the process fluid does not freeze in winter. 30 below 0 is a common temperature from December to March.

Anybody has an idea about how glycol tracing of Cooling Water line effects the temperature of cooling water?

How do I get Gas gravity ?? How can I model this in AspenPlus?

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 absolutely agree with moltemmetal.There is no shortage of Process Engineers in Canada.I have been hired by a large Canadian MNC as a process engineer after 2 years in CANADA.I have to get P.Eng licence within 12 months or I will not be given opportunity to go higher up. I am in the process of...

My question is, How do I make sure that for a given flow, there will be enough pressure for stream to flow back to pump suction? Pum discharge Pre=1500KPag Suction Pr= 150 Kpag What flow should I specify in datasheet(for vendor)of the sample cooler

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...

These valves are in Boiler Feed Water lines. Thers is very little chance of impurities or noncondensibles carry-over or particulate impurities. BFW is at 7500 KPag and 127 C, so flashing is not a possibility.

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...

vzar, You need AspenPlus user interface. When u open the UI, select template and appropriate unitset for u. Finish ur flowsheet. There is a N> logo on the menu.Click it and it will walk u thro' all the inputs u need to put in. You will need to input all stream data and column...

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...