Hi,
I was wondering if someone could give their thoughts on the following.
I have calculated the back pressure on a steam relief valve on the discharge side of the valve. The relief valve is 4" x 6" relief valve with a set-point of 58 barg and rated capacity of 69,000 kg/h at 410 deg.C inlet...
I have two quick questions (or sanity checks).
1. Am I correct in thinking that pipework, silencers etc on the discharge side of a relief valve should be sized using the un-derated flow of the relief valve and NOT the derated flow?
2. When the relief case is from a single pressure reducing...
25362:
Thanks for explaining it to zdas04. You are right 'm' is milli the same as 'mm' is millimeter. I knew the compression ratio wasn't onerous but the temperature is what I wasn't sure about as to whether any compressors could accept such high temperature.
Many thanks for the responses.
Hi,
Are there gas compressors on the open market (UK if poss) that can fulfil the following duty.
Inlet pressure: ~20 mbarg
Oulet pressure: 2,000mbarg
Flow: 2,500 Nm3/h
Fluid: off gas (51% N2, 18% CO, 12% CO2, 17% H2, 2% CH4)
Inlet temperature 500 deg.C
Thanks in anticipation of a quick...
DOes anyone know of other technologies for mercury removal other than adsorption. We are looking to install mercury removal equipment after an NGL liquid feed dehydrator and before the de-ethaniser tower. The design conditions are roughly:
Flow = 300m3/h
Pressure= 30-35barg
Temperature=...
Not sure where you live but in the UK it is law that the owners (landlords) get their boilers serviced once a year. May be worth asking the question in your country as the owners may be breaking the law by not getting it done.
The 'cord' may be the safety valve or possible an air release system...
genericmech03,
Try this web-site. Not sure where you are as this is a UK company but may have outlets where you are.
http://www.castell.com/
Basically you can attach these interlocks (keys) onto existing valves by modifying the valve head. You can get the keys that remain in the valve. This...
I am currently designing a relief valve discharge pipework for a steam line. Please could someone tell me if the following is true:
The flowrate used for the discharge pipe sizing should be at least the Certified Discharge Capacity of the relief valve (I know some would use the un-derated...
Soufiane,
The valve operation will be similar to that of a blowdown valve on boiler drums to blowdown vessels and are quite common. Most reputable valve manufacturers will be able to advise.
Isn't there any other uses you could find for the steam?? WHat about office heating?
Regards
Paul
Has anyone had any experience in sizing steam traps after a desuperheating station on steam lines. My logically thinking is that the trap (or traps) should be sized to drain water that may be inject by the spraywater system as follows:
1. As in our case the steam flow is not constant and there...
Me again,
I have just noticed a mistake from my reply.
What I said,
'One thing to note though is that the relief valve should be sized for the relief valve actual capacity rating (un-derated) and not on the relieving capacity required.'
and what I meant to say was,
'One thing to note though...
Guto,
I don't think that there is an issue with using silencers on relief valve discharge pipng. As MJCronin pointed out they are used on new CHP plants. We are installing them on a CHP scheme on a number of relief valves. One thing to note though is that the relief valve should be sized for...
