My site uses regulated compressed air to unload our rail cars to pump maybe around 200 gallons a minute (30 acfm at 40 psig) to storage. During the end of unloads vortex formation allows air to go directly through without the typical downstream pressure of the fluid being unloaded such that the...
We have a series of smaller softener units that take pre-softened water as an inlet and soften it additionally to make it "super soft". Essentially our bulk softener softens to a maximum of 5 ppm leakage and then these additional polishers are there in case the main softeners failed and went...
Have two 100 HP rotary screw air compressors that modulate via loading/unloading. Last compressor analysis indicated very frequent load/unload cycles (maybe once a minute per compressor). This is because we don’t regulate pressure after the compressors and various processes use a lot of it...
Studies performed on a quenching unit we have indicate fluoride/chloride levels are significant factors in degrading the mortar and brick. Are there any cost-effective industrial methods for fluoride/chloride removal from a stream containing 4 ppm fluorides and other typical fluids found in...
I'm re-doing a small natural gas pipeline and wanted to use a typical two-part epoxy for the piping with a corrosion wax tape applied over fittings, welds, valves, and support sections to further reduce the potential of corrosion to those parts. Is this a typical use case for corrosion wax tape...
There are several mag drive pump manufacturers our company uses across several sites (Iwaki, Innomag, Ansimag, Finish Thompson)...
Do all these manufacturers provide some sort of niche or are they all just built to the same ASME or ISO standard? What are the primary differences between these...
Why are some spray nozzles designed with the external nose geometry flat vs. chamfered? My assumption was that turbulent eddies that might generate at the leading edge would be less turbulent with a chamfered edge. The application here is vertical hot gas being cooled by spray water coming...
Most manufacturers recommend against group trapping due to backpressuring of the separate legs and potential flooding / hammer.
Are there cases where group trapping is either possible or preferred? We have a trace system where there are a large amount of vertical nozzles requiring heat trace...
We have an injection nozzle supply water to a quench tower that adiabatically cools incoming gas from 2400 to 200 F. I am trying to calculate external nozzle temperature (not accounting for ash accumulation/oxidation of the surface) and am having trouble understanding how to confirm the...
We have a spray nozzle that quenches a hot sulfur dioxide gas stream from 2450 to 180 F. There is significant corrosion at the nozzle tip and fusion zones where the tip is welded to the pipe assembly.
Part of this corrosion is related to molten salt accumulation (na2so4, nacl, etc.) where...
Our condensate return systems aren't very complex and return to a common feedwater tank where chemicals are applied - this tank isn't kept under pressure and there is always a continuous vent of steam that leaves it in a maybe 20' long vent.
We have two air compressor waste heat ducts that are...
I’ve seen sparse details on the chemical compatibility of FeB coatings, especially when aqueous corrosion consideration when applied to high nickel alloys. Our process in a quench has both high temperature and dew point corrosion failures related to sulfuric acid with high chlorides.
Is there any public database that would detail an exhaustive list of testing/publications on various alloys and materials against green death solution?
We have a process that is disturbingly similar to green death and likely more corrosive. We've been evaluating various coatings to extend...
What level of training would be necessary to be able to effectively define requirements for a cost-effective route-based vibration analyzer?
I'm struggling to differentiate between all the different options for vibration analyzers. My manager believes a vibration pen or couple-thousand...
Vendor documentation for an oil-cooled rotary screw compressor in compressed air service indicates multiple flowrate-pressure data points at "full loading".
Assuming a temperature change of 10 F between the two values we would achieve 11% more volumetric flowrate going from 490 cfm @ 100 psig...
We have around 20 pumps that are relatively small in size (3600 RPM / 1800 RPM 6-12" impellers) that are used to pump bisulfite fertilizer and soda ash slurries. These currently use a single-pass flush of soft water that is pre-heated to 100 F via direct steam contact PRIOR to entering the...
This isn’t applicable to just structures but is there any standards or literature that goes through how to take field measurements at various levels of precision? Let’s say I have an old tank and want to dimension it for design calculations - or I want to get precise measurements for a retrofit...
I am looking to evaluate the potential for pack cementation coatings, specifically aluminizing, of C276 to form nickel-aluminides that might be more resistant to the erosion-corrosion and sulfidation/hot corrosion that a spray nozzle experiences while in service.
This spray nozzle sprays...
Condensate piping used to heat 6 coils for a sulfur tank is undersized to where startup heating loads hammer and destroy smaller sections of the pipe. It’s currently cost prohibitive to replace everything - are there any effective stop gaps that we could try after shutdown or during startup to...
My company has 6 quench towers in a very corrosive process. There's three different brick materials, 6 brick shapes, a fiberglass membrane, carbon steel shell etc.
Obviously when a blow out occurs its an easy failure to represent but how does one develop a common communication between sites to...
