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ChE Plus Newsletter Volume 3, Issue 2 ChE Plus Subscriber - Click Here for a Printable Version Not a subscriber to ChE Plus? Join now for a one time fee of $34.99 USD or learn more MS Excel Spreadsheet
Contest, $100 Cash Prize! |
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Managing Wild Yeast Contamination in
Fermentation Mr. Julian
Taylor, owner and CEO of Rupture Pin Technology, invented the Buckling Pin Valve to solve
the many problems that rupture disk users have come to accept as hassles of doing
business. The ASME and API accepted Rupture
Pin Valve offers accuracy, reliability, and dependability. It will allow higher
working pressures for longer time periods without the fear of premature failure of the
pressure relief devices. The Rupture
Pin Valve obeys Euler’s Law of Compressed Columns to buckle a metallic pin that
senses an axial force from a piston that senses system pressure. The pin will buckle
precisely at set pressure allowing instantaneous full bore relief. The Rupture Pin Valve
has only one moving part, the piston. It will maintain a bubble tight seal (ASME Class 6)
until the set pressure is reached. ASME allows a variance of +5% from set pressure,
but less than +2% is normally seen on actual valve certifications. The Rupture Pin
Valve does not have the additional “manufactures tolerance of +10%” that
the rupture disk is allowed. The pin is held in place with tight tolerance inserts and
will never fatigue or be affected by pulsation. The pin has two stable conditions,
straight or buckled - providing an excellent visual indicator.
Many companies using the Rupture Pin Valves
have found the cost savings advantage over using a rupture disk, you can find a list of
these companies on the Rupture Pin website. Also
on the website is a “Rupture Pin vs. Rupture Disk cost comparison” MS Excel work
sheet so you can estimate your savings. While many companies are replacing rupture
disks, Shell Offshore has found success with
the Rupture Pin valve replacing conventional spring loaded pressure relief valves
installed on high pressure positive displacement pumps.
The pulsation created by positive displacement pumps will fatigue the
springs in conventional pressure relief valves. Because
the Rupture Pin Valve is immune to pulsation, Shell Offshore is installing the Model H
Rupture Pin Valve on their chemical injection pumps. The
set pressures on the valves are 15,000 psig and 9500 psig.
Cost savings for Shell Offshore was
quoted in the millions of dollars range! Rupture Pin Technology is currently (April
2005 delivery) building a valve for NASA at the
By adding a small Rupture Pin Valve to your
existing Pilot Operated valve, you can make the valve a fail open valve. This was the very first application for the Rupture
Pin Valve. Contact Rupture Pin Technology for
additional information if you are having problems with your pilot operated valves.
The Buckling Pin Valve, invented and
manufactured by Rupture Pin Technology will have a larger initial investment than inferior
pressure relief devices, but after installation of the Rupture Pin Valve, you may pick the day your return on investment is
achieved; because that is the day you didn’t have a premature failure. The Rupture Pin Valve is custom made to solve
individual problems. Rupture Pin Technology
has made valves as small as 1/8” to 36” and pressure ranges from inches of water
column to 15,000 psig. Rupture Pin Valves are in gas and liquid services all
over the world, in all industries. For a Rupture Pin Technology informative CD
mailed to you or more information, log on to our website at www.rupturepin.com or contact
Rupture Pin Technology at 405.789.1884 or sales@rupturepin.com.
Email us your spreadsheet today. The winner will receive a $100 cash prize! Problems at a Gas Processing Plant "I'm working on a project where the
operations folks say that the devices they have at the inlet to a pair of recip
compressors are not effective. They have 2 parallel horizontal separators that seem
to do basically nothing (no liquid ever drains from these vessels), and a vertical
scrubber that I think is plugged. The latter has a vertical element, containing wire
mesh and vanes, a liquid collection pan, and a Read the replies to
this message TANKJKT is one the best selling software titles in our online store, and it's little wonder. The author, Stephen Hall, based the program on years of experience in designing heat transfer systems with jacketed vessels and vessel with internal coils. The interface is extremely user-friendly and can be previewed here. When you're ready to get your copy of TANKJKT,
you can purchase from the online store and download the software immediately. Did you know that you can get a 10% discount on a variety of online CE courses offered by RedVector.com? Visit the CE Credit section of our online store for instructions. Remember, don't put the course in your "basket", use the link provided with each course description to order from RedVector.com. Sign up for our FREE Trade Publications. Our traffic is booming! Approximately 18,000 people around the globe receive our newsletter and nearly 80,000 unique visitors a month visit our site. See our advertising options.
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The ABCs of Process Safety and Risk Management
Determine how a pump will operate in a new duty by projecting a new curve based
on the original curve. Great tool for changing the duty of a pump. Provided
cortesy of Langley Ventures. Grab this free spreadsheet 
We're looking for the best process engineering calcuation
spreadsheets out there. Enter our contest and a chance to win a $100 prize!
The spreadsheets will be judged on the following criteria:
diptube to drain coalesced liquid to the bottom of the vessel.
The bottom should contain enough liquid to form a seal. Unfortunately, the bottom
is dry, and attempts to fill it with water have resulted in liquid slugs to the
compressors. Compressor maintenance has been a problem. Operations suspects
that some burnt glycol got into the system (perhaps pretty long ago) and has been slowly
sloughing off the pipes and equipment where it resides. Recently, gas production has been
accompanied with some very fine solids (referred to as "doughy"). We could
call it fine sand though some refer to it as clay-like. The gas contains very, very
little liquid normally, though there are wellhead drying systems at each well.
Upsets or misoperation could possibly generate liquids.