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Chexpress - September 17, 2014

Posted by ChristaS in ChExpress Blog, in ChExpress Blog 17 September 2014 - - - - - - · 795 views
occidental chemical corp. and 8 more...

North America

Settlement

Occidental Chemical Corp. has agreed to pay New Jersey $190 million as part of a settlement to clean up the polluted Passaic River. The agreement is subject to approval by New Jersey Superior Court. Occidental Chemical bought a Newark factory once owned by Shamrock Chemicals Co., which dumped cancer-causing dioxin into the riv...

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Flare Dispersion Analysis - Frequently Asked Questions (Faqs)

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, in Technical 08 September 2014 - - - - - - · 858 views
flare, dispersion, questions

Flare Dispersion Analysis - Frequently Asked Questions (Faqs) Q1. What is Flare Dispersion Analysis?
A1. Flare dispersion analysis is a study of the dispersion of toxic and / or flammable pollutants (primarily gaseous) from a flare, either a ground or elevated flare.

Q2. Is it necessary to perform a flare dispersion analysis?
A2. Yes, it has now become mandatory in most parts of the world when a new industrial u...

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International Pump Users Symposia

Posted by Chris Haslego in Art Montemayor's Blog, in Technical 11 August 2014 - - - - - - · 629 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 - - - - - - · 4,163 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 - * * * * - · 5,323 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 - - - - - - · 1,662 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 - - - - - - · 1,577 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 - September 3, 2014

Posted by ChristaS in ChExpress Blog, 03 September 2014 - - - - - - · 1,050 views
lg nanoh20 inc., 3m japan ltd. and 5 more...

North America

PO/TBA Plant

LyondellBasell plans to build a propylene oxide (PO)/tertiary butyl alcohol (TBA) plant on the U.S. Gulf Coast with an annual capacity of 900 million pounds of PO and 2 billion pounds of TBA and its derivatives. The company expects to have the plant operational in 2019. The exact location of the plant has not been finali...

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Some Guidelines For Fixed Bed Ion Exchange Units And Forced Draft Degasifiers

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, 11 August 2014 - - - - - - · 1,197 views
fixed, bed, ion, exchange, forced and 2 more...

Some Guidelines For Fixed Bed Ion Exchange Units And Forced Draft Degasifiers Dear All,

Boiler feedwater is often obtained from raw water by ion-exchange process utilizing vertical cylindrical vessels which contain ion-exchange resins of various types. These resins remove dissolved salts from the water and replace them with Hydrogen (H+ ) and hydroxyl (OH- ) thus producing pure, mineral free boiler feed quality water.

Resins whic...

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Tank Blanketing Valves

Posted by Ferz99 in Tank Blanketing Valves, 10 September 2012 - * - - - - · 3,700 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 - - - - - - · 2,369 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 - - - - - - · 4,132 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 - - - - - - · 1,887 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 - - - - - - · 1,314 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 - - - - - - · 8,423 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 - - - - - - · 2,539 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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