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Rotary Screw Compressors - Discussion And Calculations

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, in Technical 03 July 2014 - - - - - - · 953 views
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Rotary Screw Compressors - Discussion And Calculations Dear All,
Rotary Screw compressors are fast replacing piston type reciprocating compressors all over the world. With advancement in technology of precision machining the helical screws required in screw compressors, they are becoming the first choice for selection where otherwise a piston reciprocating compressor would have been used in earlier days....

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Chexpress - June 25, 2014

Posted by ChristaS in ChExpress Blog, in ChExpress Blog 25 June 2014 - - - - - - · 834 views
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North America

Polyethylene units

Chevron Phillips Chemical Company LP has had its second groundbreaking for its U.S. Gulf Coast Petrochemicals Project in Old Ocean, Texas. The construction includes two polyethylene units that will each produce 500,000 metric tons of plastic resin annually. The resin will be used for a variety of products, including ne...

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Mobile Cheresources.com

Posted by Chris Haslego in Community Admin Blog, in Community Updates 28 September 2012 - - - - - - · 3,939 views
ipad, iphone, android and 2 more...

Mobile Cheresources.com So look, most of us are engineers.  We're still trying to get our hands around the mobile revolution right?  Maybe for some people, it's been easy to leave our desktop or laptop computer behind...but not for us.  There's no question that it will be a long time before most engineers can leave their "real" computers behind, and I realize...

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What Is A Steam Trap?

Posted by Zeeshan Amin in Zeeshan Amin's Blog, in Engineering 17 June 2012 - * * * * - · 5,092 views
steam, trap, definition

What Is A Steam Trap? A steam trap is an essential element of a steam distribution piping system. As steam flows through a pipe, it cools off due to heat losses and converts into hot water; this hot water is called condensate. The function of a steam trap is to bleed off hot water so that only steam remains in the system. In addition to condensate removal, a steam trap also...

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Dust Hazard Assessment

Posted by in Mark Roote's Blog, in volume, length to diameter, dust accumulation 07 October 2011 - - - - - - · 1,572 views
cyclone, baghouse, nfpa, osha and 1 more...

Anyone working in a facility that handles dust (which is essentially every facility) is trying to get ready for the crackdown from OSHA and NFPA. While OSHA and NFPA are still trying to figure out the best way to implement new standards, what those standards will be and how to enforce the standards, NFPA and OSHA have come out with some temporary...

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A Different View Of Harrell's Colebrook-White Solution

Posted by Harrell in Harrell's Blog, in Technical 01 October 2011 - - - - - - · 1,479 views
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For some reason, most people still do not understand how my Colebrook-White solution works.

It has been tested, and re-tested over and over, and always gets the right answers if you don't make
a weird error.

This may help those who are questioning "Why does it work?"

In the Wikipedia you can read about the Lambert W function. Here's a...

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Dielectric Constant Data Required For Guided Wave Radar Type Level Transmitters

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, 22 July 2014 - - - - - - · 30 views
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Dielectric Constant Data Required For Guided Wave Radar Type Level Transmitters Dear All,

One of the most important data required for specifying guided wave radar level transmitters for storage tanks is the Dielectric constant of the stored liquid in the tank.

This data is provided by process engineers. A lot of this data is available directly form various open sources form the internet. Some links are provided below:

http://www.e...

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Chexpress - July 9, 2014

Posted by ChristaS in ChExpress Blog, 09 July 2014 - - - - - - · 407 views
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North America

Acquisition     

Renewable Energy Group has completed the acquisition of Dynamic Fuels, Inc., one of the first renewable diesel biorefineries in the U.S. The Dynamic Fuels facility in Geismar, Louisiana has a 75 million gallon annual production capacity. This was part of a two-part deal. First, Renewable Energy Group acquir...

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Tank Blanketing Valves

Posted by Ferz99 in Tank Blanketing Valves, 10 September 2012 - * - - - - · 3,523 views
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Tank Blanketing Valves The Tank Blanketing Technique Tank blanketing, also known to as tank padding, is the procedure of smearing a gas to the empty space in a storage tank or container (the term storage container refers to any container that is used to store products, regardless of its size). This techinique is used for a variety of reasons and typically involves using a buffer...

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Archiving And Searching Updates

Posted by Chris Haslego in Community Admin Blog, 23 July 2012 - - - - - - · 2,261 views
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Archiving And Searching Updates As our community continues to grow, we look for new ways to manage the tremendous amount of information at the site.  A recent change that we've made is to archive forum topics that are beyond 18 months old.

As posts are placed into "Archive" status, they will be at the same URL address, but they will not be able to receive new replies. ...

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What Is A Piping System

Posted by Zeeshan Amin in Zeeshan Amin's Blog, 28 May 2012 - - - - - - · 3,868 views
piping, system

What Is A Piping System Piping System

A piping system is a network of pipes, fittings and valves intended to perform a specific job i.e. to carry or transfer fluids from one equipment to another.  The plumbing network supplying water at your home is a common example of a piping system. Other more rigorous examples include steam piping in a power plant, milk...

Existing Equipment Strength Verification

Posted by in Mark Roote's Blog, 07 October 2011 - - - - - - · 1,796 views
steel plate, baghouse, map

Those of you that have used the spreadsheets created by "psafety" (MAP package 1, MAP package 2) may have run into some...

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Harrell's "funnel" To The Colebook-White Solution.

Posted by Harrell in Harrell's Blog, 27 September 2011 - - - - - - · 1,226 views
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This is a PDF file with some tables and plots, to show visually how my method works. I call it a funnel, because the procedure quickly guides to maximum accuracy. You will see that after step 2, the accuracy will be amazing. I already knew the solution to the Re and Rr would give 1/sqrt(f) about 4, so I plotted initial guesses of from -4 (that is a...

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Studying Chemical Engineering In Malaysia

Posted by rowanlim in Viewpoint, 01 November 2010 - - - - - - · 7,900 views
study, malaysia, chemical and 1 more...

I wrote this entry thinking about Malaysian students coming to the end of their high school life, 17 yr old youngsters who thought "Hey chemical engineering sounds like a good field, but how do I go about it in Malaysia?" This was the question I asked myself 5 yrs ago & I hope to present my view as unbiased as possible & maybe a young...

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Screw Feeder Auger Shafts

Posted by LRS in Lifetime-Reliability Blog, 09 August 2010 - - - - - - · 2,384 views
screw, break, shaft, feeder

Analysis of a broken screw feeder shaft on a granular Copper Sulphate Bagging Hopper Feed Screw


Are your screw feeder and trough screw conveyor auger shafts snapping in half?
If you have rotating shafts breaking at the centre of the span then you quite likely have a metal...



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