Bodal Chemicals Interview Questions, Process, and Tips

Q1. MASS FLOWMETER CALIBRATION
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Q2. DP TYPE LT working and configuration
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DP type LT stands for Differential Pressure type Level Transmitter used for measuring level in tanks or vessels.
• DP type LT measures level by detecting the pressure difference between two points in a vessel.

• It consists of two pressure sensors connected to the top and bottom of the tank.

• The configuration involves setting the zero and span points to calibrate the transmitter.

• Commonly used in industries like oil & gas, che...read more
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Q3. Installation of DPT IN STEAM LINE
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Installation of DPT in steam line involves proper mounting, calibration, and protection against high temperatures.
• Ensure proper mounting of the differential pressure transmitter (DPT) in the steam line to accurately measure pressure difference.

• Calibrate the DPT regularly to maintain accuracy in steam pressure readings.

• Use heat-resistant materials and insulation to protect the DPT from high temperatures in the steam lin...read more
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Q1. Family background
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Q2. Salary discussion
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Q1. Introduce your self ,what you learned in internship
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I am a recent graduate with a strong academic background in chemical engineering. During my internship, I learned about process optimization, data analysis, and safety protocols.
• Learned about process optimization techniques such as heat integration and material balance calculations

• Gained experience in data analysis using software like MATLAB and Excel

• Understood the importance of following safety protocols in a chemical...read more
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Q2. Type of reboiler
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A reboiler is a heat exchanger used in a distillation column to generate vapor from the liquid feed at the bottom of the column.
• Reboilers can be classified into different types such as kettle reboilers, thermosiphon reboilers, and forced circulation reboilers.

• The type of reboiler used depends on factors like the properties of the feed, desired product purity, and energy efficiency.

• For example, a kettle reboiler is comm...read more
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Q3. Logarithmic temperature difference ( counter current & co current graph )
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Logarithmic temperature difference is used to analyze heat exchangers in counter current and co current flow. Graph shows efficiency vs temperature difference.
• Logarithmic temperature difference is a method to analyze heat exchangers in counter current and co current flow

• In counter current flow, the temperature difference decreases along the length of the exchanger, resulting in a steeper curve on the graph

• In co current...read more
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Q4. Pump flowrate calculation ( Q= ha
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Pump flowrate calculation involves using the formula Q= ha
• Calculate the flow rate (Q) by multiplying the head (h) by the area of the pipe (a)

• Ensure units are consistent (e.g. meters for head and square meters for area)

• Consider factors like friction loss and pump efficiency in the calculation
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Q5. Bernoulli equation
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Q6. Reynold number application
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Q1. How to calculate pump flow rate
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Pump flow rate can be calculated by multiplying the pump's displacement per revolution by the pump's speed.
• Calculate the pump's displacement per revolution (in cubic inches or cubic centimeters)

• Determine the pump's speed (in revolutions per minute)

• Multiply the displacement per revolution by the speed to get the flow rate (in cubic inches or cubic centimeters per minute)
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Q2. How to calculate PHE heat load?
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PHE heat load can be calculated by considering the flow rate, specific heat capacity, and temperature difference of the fluids involved.
• Calculate the mass flow rate of the fluids passing through the Plate Heat Exchanger (PHE).

• Determine the specific heat capacity of the fluids.

• Find the temperature difference between the hot and cold fluids.

• Use the formula: Q = m * Cp * ΔT, where Q is the heat load, m is the mass flow ra...read more
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Most of general mathematical type questions

Q1. What is heat transfer?
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Heat transfer is the process of energy moving from a warmer object to a cooler object.
• Heat transfer can occur through conduction, convection, or radiation.

• Conduction is the transfer of heat through direct contact between materials, like a metal spoon heating up in hot soup.

• Convection is the transfer of heat through the movement of fluids, like boiling water in a pot.

• Radiation is the transfer of heat through electromagn...read more
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Q2. What 2 law of thermodynamics tell us?
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The two laws of thermodynamics are the first law, which states that energy cannot be created or destroyed, only transferred or converted, and the second law, which states that the entropy of an isolated system always increases over time.
• First law of thermodynamics: Energy cannot be created or destroyed, only transferred or converted.

• Second law of thermodynamics: The entropy of an isolated system always increases over t...read more
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