As a chemical engineer there are situations, where we need to evaluate various investment options for purchasing a machine or going for a new plant project. So, to select the best option among available alternatives we use project investment appraisal methods or techniques. There are many Investment appraisal techniques like payback period, return on investment, […]
Project Investment Appraisal Methods Read More »
In my last article on fundamentals of project management I had mentioned that project charter is the important document at the end of project Initiating Phase. This document is very critical for the successful, within budget and timely completion of your project. In other words, we can say this is just like a foundation of
How to Prepare a Project Charter? Read More »
As a chemical engineer we are involved in number of small or big projects. Where we initiate the project and perform number of activities, to meet end results within a pre-defined time frame. In our plants, these small projects can be like, plant maintenance activities, equipment replacement work, running a product campaign, plant performance improvement
Project Management Fundamentals Read More »
In our Chemical Process Industries, we use centrifugal pumps most commonly. And, for the selection of a proper centrifugal pump we need to provide its technical specification correctly and completely. So, we can see the various important parameters which require in pump process data sheet are available NPSH, flow rate, head, fluid properties, temperature, etc.
NPSH Available for Centrifugal Pump Read More »
Inside every chemical plant we can find compressors very easily. These rotating devises we use to compress and pump or transfer the compressible fluids like air, ammonia, natural gas, refrigerant, carbon dioxide, etc. from one point to another. These equipment are power guzzlers and consumes major part of total electricity bill inside the plant. There
Process Specification Sheet for Compressor Read More »
The chilled water and chilled brine are cold utilities, which we use to remove heat at lower temperature levels than cooling water. We use these utilities in our chemical process industries (CPI) to remove heat from air-conditioning system, process equipment and fluid streams. From cooling water at supply temperature 32 0C, we can achieve cooling
Vapour Absorption Refrigeration Cycle in VAHP Read More »
In Chemical Process Industries (CPI) we use continuous stirred tank reactor (CSTR) or mixed flow reactors for various product manufacturing. For instance, we can use these reactors for liquid-liquid, liquid-gas, liquid-liquid-solid and liquid-gas-solid phase reactions. Moreover, a fluidized bed reactor is also a CSTR where gas-solid phase reaction occurs. In this article we will develop
Continuous Stirred Tank Reactor (CSTR) Read More »
In process calculations of vapour-liquid equilibrium system there are two phases. One is vapour phase and second is liquid phase and this system can be multi-components. So, to carry out the process calculation of the unit operations involving vapour-liquid phases, we need to understand the distribution of these components between the phases. Moreover, the design
Vapour Liquid Equilibrium Systems Read More »
We can see single stage distillation method application in our chemical process industries. This is a very simple unit operation, which consists only single stage. In this method we remove all the vapour as such, or is condensed as a product. We can perform single stage distillation process in batch and as well as in
Single Stage Flash Distillation Methods Read More »
In Chemical Process Industries (CPI) we face the distillation problem of azeotropes or close boiling chemical mixtures. So, to break the azeotropes we can use several techniques like, azeotropic distillation using entrainers, extractive distillation using solvents, molecular sieves, and pressure sensitive distillation or PSD. However, we can find the use of first three methods in
Pressure Swing Distillation to Break Azeotropes Read More »
