Usually these systems have a positive displacement pump to bring pressure back to contactor, then as long as you are operating the contactor sufficiently below the maximum discharge pressure of the pump you could use a hydrocylclone, however problem is you would then have to design the...
Sorry about delay in reply have been on a location with no access to internet.
Pressures circa 270 bar(g)
Temperatures around 60Celsius
Fluid is hydrocarbon gas with no condensate downstream of glycol contactor so very low water dew point
Some solids in line due to internal corrosion in yard...
I am presently working on a facility where they have a large number of valves from an italian manufacturer (who shall remain nameless). Apart from problems with real variable stiffness from one valve to another we have a major issue with the double seated expanding gate valves. These are used in...
ivegot gas
This problem is very common. You have carryover and you want to prove and quantify it, heres a run down on ways to do it that I've used in the past starting from the cheapest to the most expensive:
1) Open a sample connection on gas outlet through a filter or rag to a suitable safe...
Actually the reason for cooling the Gas to within 5 to 10 degrees of the inlet gas before putting it in is usually put down to preventing foaming and high TEG losses. Not sure wether this is a myth or not but nearly all the dehydration units I worked on had a cooler.
If you use a gas TEG...
Bubble tight means different things to different people, if your buying a valve from these guys specify the test you want to conform to there are several classifications that are used for valve tests as you have mentioned. Go back and have them confirm they conform to your requirements. That...
I dont know if this answers your question but you have to do an iterative calculation at the branch. The pressure drop through each branch is identical if they either rejoin or they exit to the same pressure. What you do is guess flow in 6" branch this gives you the flow in 8" (total flow 670...
Apologies if this is an obvious question, but I have a problem on an FPSO where part of the sea water pipework is made from galvanised carbon steel and the exchangers fed by the sewater are plugging up regularly with a fine material that seems metallic. The other sea water systems are made from...
CO2 or H2S dissolve readily in glycol reducing the pH,also glycols oxidise readily froming corrosive organic acids.
For the first two you can only use pH control chemicals for the second you should make sure that any spent TEG is not returned to the system and that the surge tank and reboiler...
By amazing coincidence we were recently asked to do the same thing based on a safety alert on our demag compressors, it turns out the alert was raised after a tandem seal failure on a compressor in a factory in Germany. However the seals were different materials (tungsten Carbide) to ours and...
I have had a similar issue before on oil wetted screw compressors on hydrocarbon gas service, if the gas is fairly heavy as it cools from the upstream vessel gas outlet to the compressor either in normal operation or especially after a shutdown, if left pressurised, liquid hydrocarbons will...
All the scavenger chemicals work by reacting with the H2S to form an insoluble scale i.e. the byproduct is solids. Is there some reason why you have to filter all this byproduct out because at 0.3 micron filtration your going to go through filters at some rate. In fact you are filtering out...
We operate a compressor in a field with 400ppm H2S and the we changed teh inlet guide vanes and first stage impellers to 17-4pH, actually dramatically improved the errosion resistance as we were forming sulphide at the inlet
