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Chexpress - November 12, 2014

Posted by ChristaS in ChExpress Blog, in ChExpress Blog 12 November 2014 - - - - - - · 544 views
shell chemical lp, technip, sasol and 4 more...

North America

Proposed Cracker

Shell Chemical LP has exercised its option to purchase a Monaca, Pennsylvania site where it has proposed building an ethylene cracker. Shell is purchasing Horsehead Holding Co.’s former zinc smelter site. Shell is performing a multi-year review of the site, including environmental analysis, engineering design studies, ev...

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Determining Diesel Transfer Pump Capacity For Diesel Engines And Generators

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, in Technical 08 November 2014 - - - - - - · 317 views
diesel, transfer, pump, capacity and 1 more...

Determining Diesel Transfer Pump Capacity For Diesel Engines And Generators Dear All,

Often process engineers are asked to design a diesel storage and transfer system for diesel engines and diesel power generators. Where to start is often a question among process engineers. There has to be a design basis for designing such a system. Today's blog entry addresses the design basis for design of a diesel storage and transfer system...

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International Pump Users Symposia

Posted by Chris Haslego in Art Montemayor's Blog, in Technical 11 August 2014 - - - - - - · 835 views
pump, downloads, documents, user

International Pump Users Symposia Below is an important message from Art to all community members:


I’ve invested some time in downloading and compiling a listing of all the documents and printed information that has been presented in the proceedings of the Texas A&M University International Pump Users Symposia that began in 1984. I have prepared this material in order to facilita...

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Mobile Cheresources.com

Posted by Chris Haslego in Community Admin Blog, in Community Updates 28 September 2012 - - - - - - · 4,316 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 - * * * * - · 5,487 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 - - - - - - · 1,733 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 - - - - - - · 1,654 views
solution, white, view, different and 1 more...

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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Chexpress - October 29, 2014

Posted by ChristaS in ChExpress Blog, 29 October 2014 - - - - - - · 434 views
fluor technip integrated, sasol and 6 more...

North America

Ethane Cracker

Sasol will build an $8.1 billion plant in Lake Charles, Louisiana. The plant will convert natural gas into plastics ingredient ethylene as part of the biggest overseas investment by a South African company. This effort is expected to be followed by plans to build an integrated gas-to-liquids and chemicals facility there to...

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Selection And Sizing Of Marine Loading Arms For Petroleum (Black / White Oil) Products

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, 04 October 2014 - - - - - - · 805 views
sizing, selection, marine and 2 more...

Selection And Sizing Of Marine Loading Arms For Petroleum (Black / White Oil) Products Dear All,

Todya's blog entry provides a procedure for selection / sizing of marine loading arms

Vessel / Tanker Design Discharge Capacity (Figure 1)



Oil Tanker Manifold Diameters



Loading Arm size should not be larger than a maximum of two sizes of the the ships manifold diameter. A smaller size loading arm compared to the ship's manifold diam...

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Tank Blanketing Valves

Posted by Ferz99 in Tank Blanketing Valves, 10 September 2012 - * - - - - · 3,829 views
tank blanketing and 1 more...

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 - - - - - - · 2,474 views
archive, archiving, search and 2 more...

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 - - - - - - · 4,321 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 - - - - - - · 1,948 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 - - - - - - · 1,368 views
colebrook, white, solution and 1 more...

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 - - - - - - · 8,694 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 - - - - - - · 2,679 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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