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Chemical Process Technology

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Chemical & Process Technology

A place to share knowledge, lesson learnt...

Wednesday, May 30, 2007

Today, wanna to bring to you a thesis related to OPRATION AND CONTROL OF AZEOTROPIC DISTILLATION COLUMN...this document may be a bit acedemic but it may bring certain level of benifits to many of us (Chemical & Process Engineers)...Enjoy...
This document bring us something relates to
- a concept for the design of heterogeneous distillation columns under aspects of operability.
- a self-optimizing control concept is provided for a sequence of three homogeneous azeotropic distillation columns with two recycles (boundary separation scheme)
- a short cut method is developed to compare the performance of homogeneous and heterogeneous sequences based on the sum of the reboiler duties for identical equipment
Operation and Control of Azeotropic Distillation Column Sequences

A doctoral thesis from the Automatic Control Laboratory (IfA), Swiss Federal Institute of Technology (ETH) Z¨urich.
Jan Ulrich
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posted by Webworm, 5:32 PM | link | 0 Comments |

Tuesday, May 29, 2007

May 29
World Digestive Health Day
This day is to increase awareness of all to improve the care of viral hepatitis patients and world health.
As told by working group of
World Gastroenterology Organisation (WGO), a total of 400 million people are chronically infected with hepatitis B, and about half that number are chronically infected with hepatitis C. Together, these diseases are responsible for the majority of hepatocellular carcinoma cases, the THIRD leading cause of cancer death worldwide.

FREE e-news from WGO

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posted by Webworm, 4:49 AM | link | 0 Comments |

Monday, May 28, 2007

Today just by chance crawled through The University of Texas at Austin, one of my dream university many years ago, partly visited the UT, found some good stuff. I believe these materials are very useful to everyone who involve in coaching, teaching, guiding others and conduct presentation daily...this also triggered me think about my previous uni before...and now i realized why i needs to double my effort, spent triple my time, in order to achieve similar results than other from these kinds of univeristy...i would imagine, if i have been given the chances to learn in these kind of univeristy...anyway...
Before i get into the material, following my style and commitment to the peoples / sites owner, etc, let see what is The University if Texas at Austin (UTA)...
The University of Texas at Austin is a major research university home to more than 48,000 students, 2,700 faculty and 19,000 staff members. What Starts Here Changes the World. Connecting the values and mission of the university to the needs of the state and the nation. Find out how the university changes the world through research and education...details
FREE materials from The UT, Austin are...
a) Teaching & Learning
Academic Integrity
Achieving Higher Order Thinking Skills
Active Learning
Applying Memory Principles to Your Teaching
Classroom Assessment Techniques
Deeper Learning Principles
Developing Lectures
Does the First Class Day Make a Lasting Impression?
Enhancing Lectures
Forgetting Curve
How People Learn (HPL)
HPL Legacy Cycle
Improving Course Evaluations
Improving Team Productivity with Six Thinking Hats
Instructional Objectives and Levels of Thinking
Keeping Students' Attention in Lectures
Kolb's Learning Style Model
Learning Style Resources (including Felder)
Memory and Teaching
Mid-course Evaluations
Myers-Briggs Type Indicator (MBTI)
Professor Grade Data and Reviews
Socratic Questioning
Strategies for Facilitating Student Learning
Student Evaluations of College Teaching
Successful New Faculty
Teaching Engineers
Tips on Testing
Using Student Feedback
What the Best College Teachers Do
Working in Groups

b)Teaching with Technology
Assuring Quality Online
Chat Guidelines
Classroom Performance System (CPS)
Creating Streamlined Audio for PowerPoint
Facilitating Online Discussions
Intellectual Property
Online Group Discussions
Technology Tools and Instructional Applications
Using PowerPointWriting for the Web
c) Distance Learning
Best Practices for Videoconferences
Best Practices for Delivering Online Course Material (video)
FIC Distance Learning Facilities New
NetMeeting Instructions
Tandberg Instructions
Best Practices for Videoconferences

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posted by Webworm, 6:47 AM | link | 2 Comments |

Sunday, May 27, 2007

Someone raised a question :

Non-Return Valve (NRV) is provided on centrifugal pump discharge to avoid pump damage due to backflow. In some special case, designer provide a manual block valve across the NRV. Why ? Isn't it defeat the purpose of NRV ?

Infact there are several reasons behind this application...

Art Montemayor :
" 1. Prime the pump with the discharge fluid that is on the downstream side of the check valve

2. Drain the discharge fluid that is on the downstream side of the check valve."

JoeWong :
"If the pump is started-up automatically whenever the duty pump failed, then the standby pump discharge isolation valve shall always open. The bypass gate shall always open to allow small amount of hot fluid from discharge manifold back to suction manifold. Allowing hot fluid passing the standby pump will always keep the pump hot. Whenever the standby pump kick in, it is ready to receive hot fluid avoid pump crack due to uneven thermal expansion. Sometime designer drill a hole at check valve to perform similar function..."

So got it ?

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posted by Webworm, 6:07 AM | link | 5 Comments |

Saturday, May 26, 2007

Following earlier introduction to <<Optimized Gas Treating, Inc. (OGT) - Experts in CO2-Amine>>, there are some others FREE articles available on this site for download...Refer to below listing and relevant links...ENJOY...
By the way, if you know some good site related to Chemical & Process Engineering, (as you know, i am focusing on distillation recently) do recommend to me...i will crawl the website thoroughly...and let inform our lovely Chemical & Process Engineers...
Knowledge does not belongs to any of us but it belongs to ALL of US...Let Share It...I still believe the more you share, the more you will gain...

Post-combustion Capture of CO2
Treating High CO2 Gases with MDEA
Tray Hydraulic Operating Regimes and Selectivity
Upgrading Acid Gas Streams
Acid Gas Enrichment Part I: Maximizing Selectivity
Acid Gas Enrichment Part II: Maximizing Selectivity
Troubleshooting a Tail Gas Treater
Troubleshooting a Refinery Fuel Gas Treater
Troubleshooting Amine Plants
Simulator Provides Guidance for Increasing CO2 Slip in Gas Treating Applications
Eliminating Guess Work
How to Increase CO2 Slip
Effective Amine Technology
Effect of Heat-Stable Salts on Amine Absorber and Regenerator Performance
Are Your Simulation Amines too Clean?
Acid Gas Enrichment - Maximizing Selectivity

Related Post

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posted by Webworm, 7:44 AM | link | 4 Comments |

Friday, May 25, 2007

Carbon Dioxide (CO2) is known as one of industrial waste gas causing global warming...there are number of measures are implemented to reduce global warming. CO2 reduction measures are CO2 capturing, reinjection into aquifer, injection into reservior for well maintenance, gas injection for enhanced oil recovery (EOR), etc.

Above efforts will reduce CO2 release into atmosphere. However, recycling CO2 will increase quantity of CO2 in oil and result serious corrosion problem. Hence it needs to be removed from the flashed gas (from unstabilised oil). CO2 removal technology using amine absorption has been used for many years. Recently i found a website (OGT) where the founders, Ralph Weiland and Jack Dingman are those experts in this technology.

Optimized Gas Treating, Inc. (OGT) was established in 1992 by Ralph Weiland and Jack Dingman for the single purpose of providing a commercial version of a Windows-based software package for simulating acid gas removal with aqueous alkanolamines that uses a fundamental mass and heat transfer rate approach to column modeling. ProTreat™ is the culmination of more than 30 years of research in gas treating supported by government and industry in both academic and commercial environments. ProTreat is our sole product. Consequently, it receives our undivided attention in maintaining and enhancing its capabilities so that it remains the premier software package for gas treating with amines. OGT’s principals are recognized world experts in most aspects of gas treating — they offer a total of nearly 60 years of relevant experience.

Some FREE articles offered by OGT :

Column related

- Column Design Using Mass Transfer Rate Simulation (paper presented in GPSA)

- Column Design Using Mass Transfer Rate Simulation (PetroChemical & gas Processing)

- Packed Column Simulation Tracks Plant Performance

- Effect of Heat-Stable Salts on Amine Absorber and Regenerator Performance


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posted by Webworm, 6:15 AM | link | 0 Comments |

Thursday, May 24, 2007

How to calculate pressure drop and capacity of countercurrent gas/liquid packed column ?

J. Stichlmajr et al has published an article may answer above question :

Generalised model to predict pressure drop and capacity of countercurrent gas/liquid packed column >>, Gas Separation 8 Purification 1989 Vol 3 March

A generalized model has been developed for the prediction of pressure drop and flooding in packed columns in which gas and liquid flow countercurrently. The model has been validated for a wide variety of packings, both random and structured. A single mathematical expression is used to describe all flow regimes: dry gas, irrigated gas flow below the load point, loading region, and flooding. The approach to the model development is fundamental in character and is an improvement over models published.

The model can be used with

- Structured packing : Montz, Gempack, Sulzer

- Random packing (ceramic) : Raschig, Pall, Reflux, Hiflow, Berl Saddles, Intalox Saddles, Torus Saddles

- Random packing (metal) : Raschig, Pall, Bialecki, Nutter, Cascade Mini, Super Saddles

- Random packing (plastic) : Pall, NSW, Leva


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posted by Webworm, 7:00 AM | link | 0 Comments |

Wednesday, May 23, 2007

This is a site recommended by KATMAR where i crawled earlier...Read earlier post...

Ceilcote Air Pollution Control (CAPC) is EPC company in solving environmental control. CAPC design, fabricate, install and service a complete line of air pollution control equipment.
CAPC products line includes :
- Tellerette® Tower Packing
- Scrubbers,

Tellerette packing is a special design offered by CAPC...

CAPC offer FREE articles / Brochures for many type of scrubber...most of the scrubber design is particularly for dust, tail gas control purposes...

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posted by Webworm, 8:04 AM | link | 0 Comments |

Tuesday, May 22, 2007

By change found this website...Wow ! Pretty good site for refinery engineer. Let see what is GTC...

GTC is a proprietary licensed technology to processing industries from naphtha processing to terephthalic acid purification. Success built around production of chemicals and the refining of petroleum worldwide. Notion applied to production of dimethyl terephthalate (DMT), aromatics recovery, replacing LLE with ED, technologies for paraxylene production and fuel gas desulphurization.

GTC offers some FREE articles for download...

- Extractive Distillation Applied

- Succeed at Plant Debottlenecking

- Latest Desulphurization Technology Information


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posted by Webworm, 5:23 AM | link | 0 Comments |

Monday, May 21, 2007

May 21,

World Diversity Day

World Diversity Day is an opportunity to help our communities to understand the value of cultural diversity and learn how to live together in harmony...details



posted by Webworm, 2:46 AM | link | 0 Comments |

Sunday, May 20, 2007

May 20

World Peace Day (oneness Day) !

"You must be the change you wish to see in the world" - Ghandi
Peace shall always begin from your heart...
Details in ...
Flowering of the Heart



posted by Webworm, 6:52 AM | link | 0 Comments |

Saturday, May 19, 2007

KG-TOWER® - FREE Column hydraulic rating software from Koch-Glitsh...

"Version 3.2 of Koch-Glitsch’s hydraulic rating software, KG-TOWER® Equipment Rating Program, is now available for download! This electronic design tool can assist you in the specification of mass transfer equipment, including conventional and high performance valve trays and conventional and high performance random and structured tower packings. "...Registration required for KG TOWER®
KG-TOWER® has ability to import loading data from simulation output files of Aspen Technology's and SimSci-Esscor's software. Utility required for PRO/II Simulation Software...


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posted by Webworm, 6:52 AM | link | 0 Comments |

Friday, May 18, 2007

If you don't know...

May 18

HIV Vaccine Awareness Day !

HIV Vaccine Awareness Day (HVAD) is an annual event to recognize and thank volunteers, community members, health professionals, and scientists who are working together to find a safe and effective HIV vaccine. It is also a day to educate our communities about the importance of preventive HIV vaccine research. ..



posted by Webworm, 6:34 AM | link | 0 Comments |

If you don't know...

May 18

International Museum Day

Today is International Museum Day ! It has been celebrated all over the world since 1977. The event provides the opportunity for museum professionals to meet the public and alert them to the challenges that museums face...
Themes of 2007 and previous year...

"Museums and Universal Heritage"
2006 "Museums and young people"
2005 "Museums bridging cultures"
2004 "Museums and Intangible Heritage"
2003 "Museums and Friends"
2002 "Museums and Globalisation"
2001 "Museums: building community"
"Museums for Peace and Harmony in Society"
"Pleasures of discovery"
1998-1997 "The fight against illicit traffic of cultural property"
1996 "Collecting today for tomorrow"
1995 "Response and responsibility"
1994 "Behind the Scenes in Museums"
1993 "Museums and Indigenous Peoples"
1992 "Museums and Environment"


posted by Webworm, 6:10 AM | link | 0 Comments |

Technical Bulletins (Amistco)
Double Pocket Vane Mist Eliminators
Structured Grid Packing
Re-Usable Metal Filters (RMF)
MISTFIX™ Insertion Mist Eliminators
Packing Supports
Filter Separators/Coalescing Filters
Improved Pall Ring Liquid Distributors - Weir Trough Type
Sheet Metal Packing
High Performance Packing
Liquid Distributors - Orifice Riser Type
Knitted Structured Packing
Pall Ring Packing
Uniflo Inlet Diffusers
Woven Structured Packing
Raschig Ring Packing
Liquid/Liquid Coalescers
Pollution Control Packages
Carbon/Graphite Raschig Rings
Coalescers for Oily Wastewater Separators
Insulation Blanket Mesh


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posted by Webworm, 6:05 AM | link | 0 Comments |

Thursday, May 17, 2007

AMISTCO, a mist eliminator, knitted mesh, random & structured packing, distillation inlet distributor, internal support, filter & coalescer manufacturer. Incorporated 26 years ago and located in Alvin Texas, South of Houston...

AMISTCO has published several good articles for Mesh and Vane Mist Eliminators from fundamentals, application, and design aspects.

1. Types of Mist Eliminators
2. Fundamental Considerations
3. Sizing for Gas Velocity
4. Mesh vs. Vanes - or both
5. Applying Mist Eliminators
6. Curves
A co
mplete PDF copy for Mesh & Vane Mist Eliminator and Mist Eliminator Installation Guide


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posted by Webworm, 7:00 AM | link | 0 Comments |

Wednesday, May 16, 2007

World Class Home Distillation...
I have introduced a very good site for making liquor...
Home Distillation of Alcohol. Today another excellence site for home distillation...
This site provides information on the history of making liquor, step-by-step, the best part is application of process engineering knowledge...
All information has been compiled into Microsoft Word® (
doc) and Adobe® Portable Data Format (PDF) for those who would prefer to browse through this guide off line...

Information available for FREE from the site...

Pot Stills
Reflux Stills
Distillation Purity
Boiler Selection
Top End Considerations
and Techniques
Internal Reflux Condenser
Internal Reflux Cooling
Internal Reflux Condenser Core
Internal Reflux Condenser Jacket
Internal Reflux Column
Valved Reflux Still-head
Valved Reflux Column
Attaching the Column and Boiler
Column Packing
Still Operation
Final Words
Appendix 1 - Construction Costs
Appendix 2 - Resources


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posted by Webworm, 7:48 AM | link | 0 Comments |
May 17

World Information Society Day !

World Information Society Day is created to increase awareness of everyone the use of the Internet and other information communications technologies (ICTs) can bring to societies and economies and to bridge the digital divide.
WISD - International Telecommunication Union
WISD - Unesco
WISD - Global Alliance for Information and Communication Technologies and Development


posted by Webworm, 6:50 AM | link | 0 Comments |

Tuesday, May 15, 2007

MAY 15, 2007

Freedom from Self-Improvement Day !

The day will include a number of resources to encourage self-acceptance, ban self-improvement, and have fun while doing it, including a “Declaration of Independence from Self-Improvement,”...isn't cool ?

Further reading...

Freedom from self-improvement

Freedom from self-improvement...onlypunjab



posted by Webworm, 7:38 AM | link | 2 Comments |

Koch-Glitsch LP - One of the OSHA site Star !

Koch-Otto York® Separations Technology), a business group of Koch-Glitsch, LP, provides mist elimination equipment for gas-liquid separation, liquid-liquid separation, as well as vapor flow conditioning devices, for a broad base of industries including chlor-alkali, gas transmission, indoor air quality, petrochemical, power generation, pulp & paper, refining, and sulfuric acid.

FREE articles relates to Mist Eliminator
Demystifying the Selection of Mist Eliminators
Chem. Eng. Nov-Dec 1993, Overview of Mist Eliminator Engineering, Selection, and Sizing

Mist eliminators for sulphuric acid plant duty
British Sulphur 1982 - Overview of Mist Eliminators for Sulphuric Acid Plants

Laser-based Instrument Measures Mist Elminator Carryover
Using the Phase Doppler Particle Analyser (PDPA) Laser Probe for FGD Moisture Carryover Measurements
Overview of Koch-Otto York Product Line and Applications

DEMISTER® Mist Eliminator Installation Manual

FLEXIFIBER mist eliminators with carbon fiber. High Fluroride Applications historically corrosive to glass fibers.


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posted by Webworm, 5:06 AM | link | 0 Comments |

Monday, May 14, 2007

MONTZ is a distillation column and internal manufacturer (under Neuman group). The speciaties about MONTZ are :

- MONTZ packing
- Liquid Distributor
- Column Internals
- Reflux splitter
- Mass Transfer tray
- Falling film evaporator

Column layout...

Interesting FREE articles from MONTZ :

- "Performance characteristics of a new high capacity structured packing"
Z. Olujic, A.F. Seibert, B. Kaibel, H. Jansen, T. Rietfort, E. Zich, Chem. Eng. and Proc. 42 (2003), 55-60

- "Distillation column internals - Configurations for process intensification"
Z. Olujic, B. Kaibel, H. Jansen, T. Rietfort, E. Zich, G. Frey, Chem. Biochem. Eng. 17 (2003), 301-309

- "Influence of corrugation geometry on the performance of structured packings"
Z. Olujic, A.F. Seibert, J.R. Fair, Chem. Eng. and Proc. 40 (2000), 335-342


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posted by Webworm, 7:28 AM | link | 0 Comments |

Sunday, May 13, 2007

Fractionation Research, Inc. (FRI) is an organization that researches the mass transfer and hydraulics of distillation or fractionation.

Researched devices include sieve trays, valve trays, random packings and structured packings, dualflow trays, bubble cap trays, baffle trays and proprietary devices

FRI is a nonprofit but member supported corporation to provide information to its members enabling them to become more efficient in the design and operation of distillation columns. FRI also act as independent testing facility, provides unbiased technical performance data on mass transfer devices to the industry.

All articles are available to its MEMBERS only...


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posted by Webworm, 6:24 AM | link | 0 Comments |

Saturday, May 12, 2007

MAY 13 (2nd Week-end of May)
Happy Mother Day !
This day is a day honouring mothers, celebrated in many places around the world. People in different countries celebrate Mother's Day on different days of the year and today Malaysian is celerating the Mother Day...

"Mum !!! I LOVE YOU !"



posted by Webworm, 8:25 PM | link | 0 Comments |

Friday, May 11, 2007

MAY 11

World Heritage Partners' Day !

Uniting with internationally recognized institutions and companies for better outreach is a crucial component in safeguarding World Heritage. Every year, the World Heritage Centre holds a Partners' Day, inviting selected partners to highlight their involvement with UNESCO in providing technical expertise, training, resource mobilization and communication for World Heritage.

The focus will be on the latest partnership activities and to answer the question: "Why are partnerships important?". Our goal is to address crucial elements of partnership development in a themed format. The three themes will highlight partners' involvement in providing technical expertise, capacity building for World Heritage and enhancing communication and how these benefit World Heritage conservation.

Launch of Partnership between the World Heritage Centre, HP and National Geographic Maps: the World Heritage Map
Programme for 2007


posted by Webworm, 8:28 AM | link | 0 Comments |