Q1/ A distillation tower produce erucamide ( C22H43NO ) in the liquid phase with a temperature of 200 °C and purity of 96.7 % needs to be purified and crystallize to produce fine powder erucamide
·
Briefly introduce the crystallization process and how it works
·
Design cooling crystallization unit to produce 2500 kgh of erucamide with the following specification
Product Specification
|
Component |
Result |
Unit |
|
Amide Purity |
> 98 |
% |
|
Moisture |
< 1 |
% |
|
Nitrile |
< 1 |
% |
|
Colour |
< 500 |
Hazen |
• include the required calculation of designing a cooling crystallization unit (volume, width, thickness and height) and any additional calculations .
• determine the ratio of erucamide and the ideal solvent, such as hexane and do the material balances required.
• design a P&ID for the entire crystallization unit and discuss HAZOP (Hazard Operability Analysis) for most common hazards that are associated with this process.
·
Does the unit process requires an Anti-corrosion coating and if it does how regular this should be maintained.
·
How often does the unit requires maintenance.
• Discuss why cooling crystallization unit it is better than other types.
• In determining the volume of the major equipment which would be difficult or expensive to replace we should have a 20% overdesign capacity to allow for future debottlenecking.
Note: for Q1 the words must be 2000 word
Q2/ (APR) Environmental protection must be carefully prepared when dealing with the following equipment and materials:
|
equipment |
materials |
|
Splitting unit |
rapseed oil |
|
Fractionatiion unit |
mix of fatty acids |
|
reactor |
ammonia and erucic acid |
|
film evaporator unit |
erucic acid and erucamide |
|
crystallization unit |
erucamide and hexane |
In 1000 word write what are the Environmental protection which should be taken in each equipment and materials associated with it.
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