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January 2008 |
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PROCESS
Mediated electrochemical partial oxidation of toluene to benzaldehyde
The mediated anodic oxidation of toluene to benzaldehyde by redox mediators was studied using Mn3+/Mn2+ and Ce4+/Ce3+ systems in sulphuric acid. PbO2/Pb electrodes were used. The reaction was carried out in two steps. The spent electrolyte was regenerated after treatment by different techniques to obtain the maximum possible current efficiency during regeneration. ...
- R S Deshpande, D S Bhatkhande & S R Patwardhan |
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February 2008 |
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PROCESS
Fluidized bed: An efficient solid-fluid contacting device
Fluidized bed has vast applicability in the chemical process industries. Understanding and predicting the mechanisms governing the fluidized bed behaviour is of foremost importance not only for improvement of the operability of existing commercial system, but also for the development of new industrial processes. This article presents the review of manipulating the fluidization operation incorporating hydrodynamics besides the applications of fluidization using internals and advanced types of fluidization in brief. ...
- V N Lad |
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March 2008 |
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DESIGN
Innovative Concept in Designing of Multi-tubular Fixed Bed Catalytic Reactor
In this study, multi-tubular fixed bed reactor reaction between benzene and ethylene is carried out for the production of ethylbenzene. Reaction is highly exothermic and steam is produced by the liberated heat. ...
- Shilpa Patel and Prof S B Thakore |
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April 2008 |
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FOCUS
Design of virtual instrumentation for efflux time (viscosity) measurement
In the present work, a virtual instrumentation for viscosity measurement with a clock of 2 MHz is developed in the laboratory using PCL 812 data acquisition card along with IBM compatible PC operated under windows98. A simple and inexpensive circuit has been designed to detect liquid passing at two different points in the Ostwald’s viscometer. The circuit uses an infrared emitter–sensor pair to detect the liquid passing two different points. Standard gates and Flip-Flops have been used to implement the logical function.
- S Rajagopalan,
S J Sharma
and V M Ghodki |
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May 2008 |
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FOCUS
Membrane bioreactors for wastewater treatment: A review
With the current focus on water reuse projects and the role they play in the water cycle, the search for cost competitive advanced wastewater treatment technologies has never before been so important. The membrane bioreactor (MBR) process is an emerging advanced wastewater treatment technology that has been successfully applied at an ever-increasing number of locations around the world. In addition to their steady increase in number, MBR installations are also increasing in terms of scale. This paper describes the treatment of wastewater with membrane technology in view of its reuse for applications, which do not require potable water quality. ...
- Dr N B Raut, Ms Shah Jahan and G B Shinde |
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June 2008 |
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FOCUS
Product purification and
separation - a suspension based melt crystallization approach
Chemical industry is very much concerned with the separation and purification of chemical compounds. Impurities generally represent wasted product and cause undesirable variation to the final product quality. Specific impurities can damage catalyst and lead to failure of downstream processes ...
- Shailesh R Nandani |
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July 2008 |
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FOCUS
New capabilities further improve productivity, lower operation costs
The latest version of engineering software, and new available capabilities of controllers have expanded process automation system ...
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August 2008 |
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FOCUS
HYDRA-CELL: The pump for all purposes
If you are an engineer working in the process industries... if today you have to choose a pump for a new system, or replace a pump in existing plant... How will you choose? Two suggestions. Keep an open mind. Think about versatility
- Wanner International Ltd |
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September 2008 |
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MATERIAL HANDLING
Changing trends in material handling
Present material handling systems combine complex machinery and information technology that can facilitate value-added operations and contribute to supply-chain excellence ...
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October 2008 |
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AUDIT
Conservation of energy through audit
The success of many production facilities depends on the trustworthy energy provided by steam. UKL is dedicated to playing a role in this success, using the latest technology and experienced personnel to improve steam and condensate systems ...
- UNI KLINGER LIMITED |
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November 2008 |
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FOCUS
Energy conservation in process heat boilers and heaters - An instrumentation approach
Depending upon the fuel used and capacity of the boilers, the energy saving methodology also varies. We will discuss the modalities of saving energy by adopting instrumentation and control for medium size boilers and heaters, as these are used widely in process industries ...
- N.A. Raghu |
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December 2008 |
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FOCUS
Lubricating Greases from Some Seed Oils
Lubricating greases have been prepared from soaps of Barium, Calcium, Aluminum Salts, Orange Tomato and Pumpkin seed oil fatty acids. These metallic soaps were analyzed for melting points and metal contents and then used for the preparation of lubricating greases with paraffin oils. The prepared grease and commercial grease samples were tested for consistency, dropping point and Synersis (after 30 days). The best greases were obtained from Calcium - Orange seed oil soap among the properties studied ...
- Dr Kulkarni A. S., Dr Khotpal R. R. and More V. I. |
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