Deccan Fine Chemicals Senior Process Engineer Interview Questions, Process, and Tips

Unit operations involved in cooking include mixing, heating, cooling, and separation processes.

• Mixing ingredients to create a homogeneous mixture (e.g. stirring batter)

• Heating to cook food (e.g. boiling, baking)

• Cooling to set or solidify food (e.g. refrigerating)

• Separation processes like filtering or straining (e.g. separating solids from liquids)

Seeking new challenges and growth opportunities.

• Looking for a more challenging role

• Seeking career growth and advancement

• Want to broaden my skillset and learn new technologies

• Current company lacks opportunities for professional development

• Desire to work in a different industry or sector

I am switching from the pharmaceutical industry to the chemical industry to broaden my knowledge and skills in different sectors.

• To gain a broader understanding of different chemical processes and applications

• To explore new opportunities and challenges in the chemical industry

• To expand my skill set and learn new techniques in chemical engineering

• To contribute my pharmaceutical experience and knowledge to the chemical i...read more

Design steps for a shell and tube heat exchanger

• Determine the heat duty and fluid flow rates

• Select the appropriate materials for the tubes and shell

• Determine the number of tube passes and tube layout

• Design the baffles and tube supports

• Calculate the heat transfer area and pressure drop

• Specify the inlet and outlet connections

• Prepare detailed fabrication drawings

Pressure drop in a column refers to the decrease in pressure as fluid flows through the column.

• Pressure drop is caused by frictional resistance to flow and changes in direction of the fluid.

• It can be calculated using Bernoulli's equation or by measuring pressure at different points in the column.

• Pressure drop can affect the efficiency of the column and may require adjustments to the operating conditions.

• Factors that ca...read more

HAZOP is a hazard and operability study, while MSDS is a material safety data sheet.

• HAZOP is a systematic and structured approach to identify potential hazards and operability problems in a process plant.

• MSDS is a document that provides information on the properties of hazardous chemicals and how to handle them safely.

• HAZOP involves a team of experts analyzing the process design and identifying potential deviations tha...read more

Chemical Engineering Thermodynamics is the study of energy and its transformations in chemical processes.

• It involves the analysis of heat transfer, work, and energy flow in chemical systems.

• It helps in understanding the behavior of chemical reactions and the design of efficient processes.

• Thermodynamics principles are used to optimize process conditions and maximize energy efficiency.

• Examples include calculating heat tr...read more

NPSH stands for Net Positive Suction Head in a centrifugal pump.

• NPSH is a measure of how much suction pressure is required at the pump inlet to prevent cavitation.

• It is important to ensure that the NPSH available (NPSHa) is greater than the NPSH required (NPSHr) for the pump to operate efficiently.

• NPSH is affected by factors such as pump speed, fluid properties, and system design.

• Cavitation can occur if the NPSH availa...read more

Distillation is a separation process that involves heating a liquid mixture to create vapor and then cooling the vapor to get a purified liquid.

• Types of distillation include simple distillation, fractional distillation, and steam distillation.

• Simple distillation is used for separating components with large boiling point differences.

• Fractional distillation is used for separating components with closer boiling points.

• Ste...read more

Types of impellers in centrifugal pumps include closed, open, semi-open, and vortex.

• Closed impeller: all flow enters and exits through the impeller blades

• Open impeller: flow enters through the center and exits along the blades

• Semi-open impeller: flow enters through the eye and exits along the blades

• Vortex impeller: flow enters through the eye and exits through the periphery

• Impeller selection depends on the application

I have applied my knowledge of chemical engineering principles in designing and optimizing manufacturing processes by analyzing reaction kinetics, heat transfer, and mass transfer.

• Utilizing reaction kinetics to determine optimal reaction conditions for maximum yield

• Applying heat transfer principles to design efficient heat exchangers for temperature control

• Optimizing mass transfer processes to improve separation effici...read more