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Distance Between Mist Eliminator Top And Vapor Outlet Nozzle For Vertical Separators

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, in Technical 04 September 2015 - - - - - - · 735 views
distance, mist, eliminator, top and 2 more...

Dear All,

Besides defining the Low-Low (LLL), Low (LL), Normal (NLL), High (HLL) and High-High (HHLL) liquid level based on criteria such as retention time, surge requirements for normal process control and adequate disengagement space during events such as large liquid slugs entering the separator or foaming, it is also important to define the vapor out...


Online Store And Chexpress Run Coming To An End

Posted by Chris Haslego in Community Admin Blog, in Community Updates 24 January 2015 - * * * * * · 26,740 views

For many years, Christa Semko has been providing us with chemical manufacturing news updates through her blog. For even more years, we've had an online store where you can purchase quality engineering calculations in MS Excel format. We'll be ending both of these features in 2015.

The online software store will close on June 30, 2015. So, please, if y...


Chexpress - December 17, 2014

Posted by ChristaS in ChExpress Blog, in ChExpress Blog 17 December 2014 - * * * * * · 2,124 views
dow chemical and 9 more...

North America


Dow Chemical is selling two businesses for a total of $225 million. Vertellus Specialty Materials will buy Dow’s sodium borohydride business and Valfilm North America will buy a Dow polyolefin films plant in Findlay, Ohio. Dow expects both sales to close during the first quarter of 2015. The divestiture of the sodium borohydride bu...


International Pump Users Symposia

Posted by Chris Haslego in Art Montemayor's Blog, in Technical 11 August 2014 - - - - - - · 1,636 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...


What Is A Steam Trap?

Posted by Zeeshan Amin in Zeeshan Amin's Blog, in Engineering 17 June 2012 - * * * * - · 6,584 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...


Dust Hazard Assessment

Posted by in Mark Roote's Blog, in volume, length to diameter, dust accumulation 07 October 2011 - - - - - - · 2,159 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...


A Different View Of Harrell's Colebrook-White Solution

Posted by Harrell in Harrell's Blog, in Technical 01 October 2011 - - - - - - · 2,075 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...


Pressure Drop In Fixed (Single Phase Tubular Packed) Bed Reactors

Posted by ankur2061 in Ankur's_Chemical_Engg_Blog, 29 July 2015 - - - - - - · 1,218 views
pressure, drop, fixed, bed and 1 more...

Pressure Drop In Fixed (Single Phase Tubular Packed) Bed Reactors Dear All,

Today's blog entry relates to pressure drop in fixed bed reactors.

Let us examine the components that contribute to the calculated pressure drop in fixed bed reactors. The design pressure drop should consider a safety margin on the calculated pressure drop.

Bed Pressure Drop : For both gases and liquids this should be calculated based on the...


Fireproofing Standards - The Need And Reasons For Their Existence

Posted by WayneKienbaum in WayneKienbaum's Blog, 19 May 2015 - - - - - - · 1,162 views

Just like most other business, the fireproofing business has a code of conduct and some established standards which are mandatory for all the fireproofing companies to follow while conducting their work. These standards are formed, maintained and updated by NFPA , a regulatory body in USA and can be found online on their website .

Most professional compa...


Depressuring In The Dense Phase

Posted by dhanoag in dhanog's Blog, 04 February 2015 - - - - - - · 1,467 views

Depressuring In The Dense Phase How to depressure in the supercritical phase using dynamic depressuring utility in Hysys?

Process systems containing large inventories of gas and light hydrocarbon liquids at high pressure have the potential to create a major hazard during a plant upset. To minimize the potential for the creation of a major hazard, blow down valves shall be used for dep...


Chexpress - December 3, 2014

Posted by ChristaS in ChExpress Blog, 03 December 2014 - - - - - - · 1,278 views
kinder morgan inc., petronas and 6 more...

North America


Kinder Morgan, Inc. has completed its acquisition of the outstanding equity securities of Kinder Morgan Energy Partners, L.P., Kinder Morgan Management, LLC and El Paso Pipeline Partners, L.P. The approximately $76 billion transaction was initially announced earlier this year on August 10. Kinder Morgan, Inc. is the largest energy...


Mobile Cheresources.com

Posted by Chris Haslego in Community Admin Blog, 28 September 2012 - - - - - - · 5,204 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...


Tank Blanketing Valves

Posted by Ferz99 in Tank Blanketing Valves, 10 September 2012 - * * - - - · 5,151 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...


What Is A Piping System

Posted by Zeeshan Amin in Zeeshan Amin's Blog, 28 May 2012 - - - - - - · 5,390 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 - - - - - - · 2,485 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...


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

Posted by Harrell in Harrell's Blog, 27 September 2011 - - - - - - · 1,751 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...


Studying Chemical Engineering In Malaysia

Posted by rowanlim in Viewpoint, 01 November 2010 - - - - - - · 10,320 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...


Screw Feeder Auger Shafts

Posted by LRS in Lifetime-Reliability Blog, 09 August 2010 - - - - - - · 3,375 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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