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Chemical Process Technology

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Chemical & Process Technology

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Monday, April 30, 2007

April 30, 2007


Silence can say more than a thousand words.

This day shall unite us all about this unbelievable painful & shockingevent and show some respect and love to those who lost their loved ones. On April 30th 2007, the Blogosphere will hold a One-Day Blog Silence inhonor of the victims at Virginia Tech. More then 30 died at the US college massacre.

Source : OneDayBlogSilence

What they said about this day...Tyler Reed, Nicharalambous

Good effort and intention. However, disagree on the action......



WebWorm

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posted by Webworm, 8:05 AM | link | 0 Comments |


Reactive distillation is a process where the chemical reactor is also the still. Separation of the product from the reaction mixture does not need a separate distillation step, which saves energy (for heating) and materials.

This technique is especially useful for equilibrium-limited reactions such as esterification and ester hydrolysis reactions. Conversion can be increased far beyond what is expected by the equilibrium due to the continuous removal of reaction products from the reactive zone. This helps reduce capital and investment costs and may be important for sustainable development due to a lower consumption of resources.
Some Reactive distillation processes...
Acetylation
Aldol condensation
Alkylation
Amination
Dehydration
Esterification
Etherification
Hydrolysis
Isomerization
Oligomerization
Transesterification
FREE articles on Reactive Distillation...
- Recent Advances in Reactive Distillation
- Rate-Based Modeling of Reactive and Catalytic Distillation
- A Review of Reactive Distillation Modeling & Control
- Modeling of Reactive Distillation
- Packed reactive distillation columns : modeling, simulation & control
- Process Design Studies For The Manufacture of Is-octane
- Design of Reactive Distillation


WebWorm

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posted by Webworm, 7:39 AM | link | 0 Comments |

Sunday, April 29, 2007

April 29, 2007


World Pinhole Photography Day


An international event created to promote and celebrate the art of pinhole photography.
WPPD is annual event held on last Sunday of April. On this unique day, people throughout the world
  • to take some time off and to participate in the simple act of making a pinhole photograph
  • to share their visions and help spread the unusual beauty of this historical photographic process

Details...



WebWorm

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posted by Webworm, 8:35 AM | link | 0 Comments |

Saturday, April 28, 2007



The Distillation Group Inc (DGI)

conduct training on Distillation by emphasizing on
- practical use of material presented
- understanding of theory and corrrect principles for practical use
- application of knowledge to the plant
- case studies from actual operating plant
- modular approach to courses and seminars
- customize training module to suite client requirements

Popular conducted modules :
-
Advanced Distillation Technology
-
Process Troubleshooting
-
Introduction to Petroleum Refining
-
Crude Petroleum Distillation

FREE & Useful Stuff :
- Distillation (DGI way)
-
Liquid Levels and Densities: Case Histories with DP Cell Problems
-
Steady Under Pressure: Distillation Pressure Control
-
Improve the Reliability and Maintenance of Recovery Processes
-
Troubleshoot with Exchanger Liquid Levels
- Others (Listing w/o full text)
- Newsletter 1 : Cover technical information on...Foam a major cause of tower problems.Thermosyphon reboiler operation: affect of liquid levels on heat duty in a recirculating system without a baffle: petroleum refinery naphtha splitter

- Newsletter 2 : Cover technical information on... Improper liquid level problems caused by incorrect density used with a DP cell: cryogenic gas plant and petroleum refinery FCC main fractionator.Hanging downcomers and high-capacity trays.



Useful Q&A
Vaporization limits in thermosyphon reboilers
Control of parallel condensers (non-symmetrical)
Mass-transfer unit approach to column design.
Fluid heating systems: vaporizer, stab-in, thermosyphon, forced, kettle
Vacuum system selection and pumparound control logic
Heat exchanger system selection criteria
Packing efficiency tests and interpreting the results to operating units
Liquid level measurement problems in an FCC main fractionator
Hanging downcomer high-capacity trays: what are they and how do they work?
Cascade control on distillation units: why use it?
Dry-out of a supercritical extraction unit.
Random packing hold-downs and open area for flow.
Structured packing application in high-pressure systems: limitations and experience.
Visbreaker wash zone coking: poor product quality (D8 color) from HVGO cut from a visbreaker vacuum fractionator.
Dual reboiler operation: removing the first reboiler of two reboilers from service while leaving it in place: petroleum refinery FCC naphtha stabilizer.
Thermosyphon reboiler operation: affect of liquid levels on heat duty in a recirculating system without a baffle: petroleum refinery naphtha splitter.
(...from DGI Question on Technology)
If you are interested...commercial Software :
TZVlave



WebWorm

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posted by Webworm, 7:55 PM | link | 0 Comments |

Friday, April 27, 2007



Today found an interesting website for Process & Chemical Engineer, especially those involve in Design and Engineering...VMG
Virtual Materials Group (VMG), a process simulation and material behavior prediction software...client from oil, chemical and refinery technology companies.
VMGSim™ - VMG product...process simulation system integrates flowsheeting kernel with Visio™ for ease-of-use and graphics interface and Excel™ for seamless bidirectional spreadsheet calculations. (Download)
FREE Articles available in this site...
CAPE-OPEN Specialty Property Packages - New Thermodynamic Models and Software Integration Paradigm A. Satyro, Yau-Kun Li, Rajeev K. Agarwal and Oscar J. Santollani,
"Modeling Urea Processes: A New Thermodynamic Model and Software Integration Paradigm", Presented at the 2000 Clearwater Convention on Phosphate Fertilizer & Sulfuric Acid Technology Sheraton Sand Key Resort, Clearwater Beach, Florida -- June 16-18, 2000
Others FREE articles may request using this LINK
TZValve 3.0.2, a distillation software developed by The Distillation Group is marketed by VMG...I found The Distillation Group website, will expedite this site and share my findings in post...


WebWorm

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posted by Webworm, 9:36 AM | link | 0 Comments |
I am working very hard on building my website...Host provider is www.1111mb.com. It's FREE...However, it not user friendly...I am finding a new Host provider (supporting Frontpage). Your help is welcome...

WebWorm

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posted by Webworm, 9:14 AM | link | 0 Comments |

Thursday, April 26, 2007


Bridget Schoonover


CONGRATULATIONS....

Plant Innovation Award Winner...


by

Bridget Schoonover, senior improvement specialist for Dow in Freeport, Texas, awarded 3rd Plant Innovation Award (PIA), who led a team that validated and implemented a solution to a source of lost revenue at the plant: a waste stream....details



About the PIA
The Plant Innovation Award (PIA) was inaugurated in 2005 by Chemical Processing to enhance the peer recognition of engineers who solve challenging problems at existing facilities with ingenuity and creativity. Unfortunately, such engineers rarely get visibility beyond their employers for such accomplishments. PIA is the only public award of its kind.


WebWorm

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posted by Webworm, 8:02 AM | link | 0 Comments |

April 26,

World Intellectual Property Day

Most people are aware of intellectual property (IP) - of copyright, patents, industrial designs and trademarks. But many still view these as business or legal concepts with little relevance to their own lives. To address this gap,
WORLD INTELLECTUAL PROPERTY ORGANISATION (WIPO) ’s Member decided in 2000 to designate an annual World Intellectual Property Day. They chose April 26, the date on which the Convention establishing WIPO originally entered into force in 1970.


“World Intellectual Property Day is an opportunity to encourage people to think about the role played by intellectual property in everyday life, and about its importance in stimulating and safeguarding innovation and creativity”. ..a message from WIPO Director General Kamir Idris.

Some stuff from…CIPO

IP Toolkit
It starts with an idea
Bank of Speakers
Canadian Women's Contribution to Innovation
7 good reasons to protect your intellectual property rights
Taking advantage of your idea or invention
Intellectual property gives you the edge



WebWorm

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posted by Webworm, 7:15 AM | link | 0 Comments |

Wednesday, April 25, 2007


The Dow Chemical Company will accept proposals for funding in the area of methane conversion chemistry with the goal of producing ethylene, propylene, or reasonable precursors for ethylene and propylene. Routes to the olefins cannot require syngas and syngas conversion chemistries are explicitly excluded.


About DOW...


WebWorm

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posted by Webworm, 6:14 AM | link | 0 Comments |
About Katmar Software...


The PACKCOL program performs hydraulic design and rating calculations for packed columns and towers. The design basis for new columns can be approach to flood, maximum capacity or pressure drop. S.I., Metric and English units are supported and the program can convert between these system of units.
The Eckert and Robbins correlations are both included to cover the full range of liquid flowrates. Calculated results can be printed in tabular form, and plotted as a Generalized Pressure Drop Correlation diagram or as an Operating Diagram. The program includes an extensive illustrated database of packing types from the major suppliers, but custom data can be used as well.The packings included are :-
  • Raschig Rings
  • Pall Ring
  • Berl Saddle
  • Cascade Mini-ring ( trademark of Koch (Cyprus) Limited )
  • Flexiring ( trademark of Koch-Glitsch, LP )
  • Hy-Pak ( trademark of Koch-Glitsch, LP )
  • Intalox ( trademark of Koch-Glitsch, LP )
  • Snowflake ( trademark of Koch-Glitsch, LP )
  • Jaeger Tri-Packs ( trademark of Jaeger Products, Inc. )
  • Nutter Ring ( trademark of Nutter Engineering )
  • Super Torus Saddle ( trademark of Raschig AG )
  • Ralu Ring ( trademark of Raschig AG )

The following screen shots can be viewed by clicking the titles below :-

Download evaluation version from Katmor.

WebWorm


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posted by Webworm, 6:11 AM | link | 0 Comments |

APRIL 25
WORLD PENGUIN DAY

World Penguin Day coincides with the annual northward migration of penguins. This happens each year on or around April 25th. Penguins do not fly. Rather, they walk, or waddle their way to and from...


Interesting site :
Penguin Dance Penguins Around the World Sea World In The Wild Barbara's & Pete's Penguin Pages

WebWorm

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posted by Webworm, 5:19 AM | link | 0 Comments |

Tuesday, April 24, 2007


Matcor: Put safety first, and profits will follow

BP TEXAS City Refinery BLAST

WebWorm


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posted by Webworm, 9:04 AM | link | 0 Comments |

April, 24

World Lab Animal Day...


World Lab Animal Day was founded by the National Anti-Vivisection Society (NAVS) and the day chosen (April 24th) commemorates the birthday of Presidents Lord Dowding.
Click here for details of article...

Some others article may be interesting...
See what Jan Creamer, NAVS say...

SUPPORT
Click here to make a donation; we urgently need funds to get a primate experiments ban!
Click here to see new NAVS Lab Animal Week T-shirts!
Click here to see new ADI Lab Animal Week T-shirts!



WebWorm

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posted by Webworm, 5:49 AM | link | 0 Comments |
PACKED COLUMN
A packed bed is a hollow tube or pipe that is filled with a packing material. The packing can be randomly filled small objects like Raschig rings or else it can be a specifically designed structured packing.

The purpose of a packed bed is typically to improve contact between two phases in a chemical or similar process. Packed beds can be used in a chemical reactor, distillation process, or a scrubber, but packed beds have also been used to store heat in chemical plants. In this case, hot gases are allowed to escape through a vessel that is packed with a refractory material until the packing is hot. Air or other cool gas is then fed back to the plant through the hot bed, thereby pre-heating the gas feed.


WHY PACKED COLUMN IS USED ?
Packed columns are preferred to tray columns
  1. PROCESS WITH 2-PROCESS FLUIDS (liquid- gas, liquid-liquid, liquid-solid, liquid-vapor) are in contact and separation take place.
  2. LOW PRESSURE DROP (typically 0.35 - 2mm Hg per theoretical plate for packed column compared to 3.05m Hg for trays)
  3. HIGH CAPACITY
  4. LOW LIQUID HOLD-UP
  5. GOOD RESISTANCE TO FOULING

DESIGN & APPLICATION

Packed Column Design, an article from Cheresources, well known online Chemical Engineering information site, briefly describe step-by-step approach in packed column sizing.

Sizing of Packed Towers in Acid Plants, Cheresources - An application for Packed column with absorption of SO3 in the Interpass and Final Towers and recovers as product sulfuric acid...

FREE Packed Column spreadsheet from
Cheresources .

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posted by Webworm, 4:42 AM | link | 0 Comments |

Monday, April 23, 2007

April 23,

World Book & Copyright Day

Today is World Copyright Day, a symbolic date to create appreciation and respect to Origin & Copyright...today has been selected by UNESCO's General Conference, held in Paris in 1995, encouraging everyone discover and enjoy reading BOOKS and pay respect to AUTHORS.
Copyright.COM...Introducing a revolutionary Web-based rights advisory and management service from Copyright Clearance Center (CCC) that enables end-users to share more information with ease, speed and confidence



WebWorm

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posted by Webworm, 7:43 AM | link | 0 Comments |
Home Distillation of Alcohol
For those who wants to mak
e liquor, this is one of the best site for you...You may download complete sites (HomeDistillation.zip) and other documents such as :


A site maintain by Tony Ackland (A ChE)

Alcohol distillation : Basic principles, equipment, performance, relationships and safety
An article by Eric Kvaalen et. al,
Purdue University is to help you understand the distillation of ethyl alcohol. This article presents the basic principles involved in distillation, types of distillation equipment and systems that might be involved in a small fuel alcohol plant are then discussed, performance and control criteria needed for a general evaluation.

Alcohol distillation by SOLAR energy
An article by Rajiv M. Jorapur and Anil K. Rajvanshi, Nimbkar Agricultural Research Institute (NARI). This paper presents the data generated for a study of pilot solar distillation plant to produce ethanol (hereafter referred to as alcohol) using sweet sorghum as the raw material.

WebWorm

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posted by Webworm, 6:09 AM | link | 0 Comments |

Earth Day 2007:

A Record Of Results In Protecting Our Environment


President Bush Is Pursuing Common-Sense Policies To Protect The Environment. By encouraging cooperative conservation, innovation, and new technologies, this Administration has compiled a strong environmental ...
via Theautochannel.com
WebWorm

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posted by Webworm, 5:53 AM | link | 0 Comments |

Sunday, April 22, 2007

April 22, The EARTH DAY !!!
The purpose of EARTH DAY is to inspire appreciation for the earth's environment and awareness of issues that threaten it.
EARTH - One and only one where we are staying at... preserving is responsibility of everyone of us...
Some information to share...
What Is Earth Day?

What Is the Greenhouse Effect?
Why Leaves Change Colors
Why I Oppose Fluoridation of Public Water
Can Cloud Seeding Dissipate Hurricanes?
Plant & Soil Chemistry Science Projects
Answers to Snowflake Questions
WebWorm

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posted by Webworm, 9:56 AM | link | 0 Comments |

Saturday, April 21, 2007


Some FREE articles and calculator out there...you may /may not aware...



In Depth Look at Extractive Distillation
An article from Cheresources, written by one of my good friend, Dr. Dominic Foo Chwan Yee, who are specilized in Heat, Mass & Property Integration. Recently we have just started a study on Property Integration...wishing everything go smooth...


Calculation of Number of Theoretical Plates (NTP) using McCabe-Thiele method
A Web calculator by Shuzo Ohe, Ph.D, to calculate column number of theoretical plates (NTP) using McCabe-Thiele method. Result is presented graphically ...


Calculation of Number of Theoretical Plates (NTP) using McCabe-Thiele method for NON-IDEAL system
A Web calculator by Shuzo Ohe, Ph.D to calculate column number of theoretical plates (NTP) using McCabe-Thiele method for NON-IDEAL system. Result is presented graphically ...


WebWorm

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posted by Webworm, 8:25 AM | link | 0 Comments |
Claiming WWCPT in Technorati...

Technorati Profile

WebWorm

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posted by Webworm, 2:45 AM | link | 0 Comments |

Friday, April 20, 2007

DISTILLATION


Defintion (From Wikipedia)
Distillation is a method of separating chemical substances based on differences in their volatilities. Distillation usually forms part of a larger chemical process, and is thus referred to as a unit operation.
Distillation has a number of uses. It is used to separate crude oil into more fractions for specific uses such as transport, power generation and heating. Water is distilled to remove impurities, such as salt from sea water. Air is distilled to its components such as oxygen for medical applications and helium for party balloons. The use of distillation on fermented solutions to produce distilled beverages with a higher alcohol content is perhaps the oldest form of distillation, known since ancient times.
An introduction on distillation site for fresh engineer and refresher for experienced engineer being maintained by M.T. Tham from Department of Chemical and Process Engineering at the University of Newcastle, Tyne, UK.


The purpose of below notes is to expose you to the terminology used in distillation practice and to give a very basic introduction to:

Restek has presented some distillation theory and practice related stuff such as CLAUSIUM-CLAPEYRON equation, TROUTON's rule, RAOULT's Law, basic equiment, estimation of plate, compositional changes, Distillation Column, etc.



Will bring to you some industrial distillation related stuff next round...


WebWorm

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posted by Webworm, 6:19 PM | link | 0 Comments |

Thursday, April 19, 2007


Sulzer Chemtech Ltd is active in the field of process engineering and is a technology leader in the field of mass transfer and static mixing, with its advanced and economical solutions.
Sulzer Chemtech offers a FREE tower internals design package : SULCOL for Windows. As claimed by Sulzer this program is based on real applications in industrial columns and Sulzer's own experimental data. SULCOL can be downloaded from www.sulzerchemtech.com, under pull-down menu Design Tools. Download required registration...

Some features in SULCOL :

  • structured and random packing hydraulic design and rating
  • tray hydraulic design and rating includes fixed and movable valves, one pass, multipass and conventional downcomer tray design
  • Complete description of Sulzer Chemtech's tray portfolio including Shell tray technology.
  • Imports data from PRO/II, ASPENPLUS and Excel.
  • Export data to RTF or an XML file


Webworm

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posted by Webworm, 8:53 AM | link | 0 Comments |

Wednesday, April 18, 2007


Recommended :

IAPWS is an international non-profit association of national organizations concerned with the properties of water and steam, particularly thermophysical properties and other aspects of high-temperature steam, water and aqueous mixtures that are relevant to thermal power cycles and other industrial applications.

Following tabulate listing of useful documents and links for STEAM & WATER engineering... if some of you have better site, please drop me a comments...

Steam Conservation Guidelines Handbook (Source : Armstrong)
Armstrong has been sharing know-how since they invented the energy-efficient inverted bucket steam trap in 1911. In the years since, customers’ savings have proven again and again that knowledge not shared is energy wasted. Armstrong’s developments and improvements in steam trap design and function have led to countless savings in energy, time and money. This section has grown out of our decades of sharing and expanding what we’ve learned.It deals with the operating principles of steam traps and outlines their specific applications to a wide variety of products and industries. This section also includes Recommendation Charts that summarize our findings on which type of trap will give optimum performance in a given situation and why.
Condensate Recovery Handbook (Source : Armstrong)
The most basic part of energy management is utilizing all valuable Btu within the steam system. Depending on the pressure, condensate exiting a trap contains approximately 20% of the heat energy transferred at the boiler in the form of sensible heat. Effective recovery of condensate reduces three tangible costs of producing steam :

  • Fuel/energy costs associated with producing steam
  • Boiler water make-up and sewage treatment
  • Boiler water chemical treatment
These savings can be calculated using the attached savings form. Returning condensate saves money, energy and the environment. Pour money and energy savings back into your plant—not down the drain.

Steam Engineering Tutorial...
A
comprehensive information and knowledge on Steam Engineering and Heat Transfer site (Source : Spirax Sarco)

Water97_v13.xla (Alternative1Alternative2)
A very useful MS EXCEL Add-In for calculating thermodynamic and transport properties of water and steam using the industrial standard IAPWS-IF97. (source : Cheresources)


Steam67.zip contains compiled dll version of the 1967 ASME Steam Tables and an Excel 97 example of using it. (source : KORF)  

Steam Table
A web-base steam table generation for different Steam-Water regions :

(source : Spiraxsarco


Thermo Utilities v3.0(1.75 Mb) offers a large number of functions for calculating the properties of water, steam, air, flue gases and other fluids. The functions used for steam and water properties are based on a set of equations accepted by the members of the Sixth International Conference on the Properties of Steam. The sets of equations are also known as "IFC Formulation for Industrial Use". Thermo Utilities calculates the properties of dry air, moist air, exhaust and flue gases by using equations accepted by ASHRAE and CIBSE (Chartered Institute of Building Services Engineers). Lee-Kesler method used in this package can be applied to a large number of chemicals for estimating thermodynamic properties. The database accompanied with this package for use with Lee-Kesler method supports more than 450 chemicals. The package also offers a large number of inverse functions which are useful for applied thermodynamics calculations. (source : Taftan Data)


SteamTab™ (demo) add-in software, new water and steam properties formulation approved by the International Association for the Properties of Water and Steam (IAPWS)

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posted by Webworm, 8:12 AM | link | 2 Comments |
Chemical Engineering Magazine is conducting online survey..."Ethics — Where do you stand? "

You may read "How would you respond to a situation where there’s no clear boundary between right and wrong?", By Gerald Ondrey, Senior Editor


Call for all ChEng & ProcEng response... July 01.


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