Linde India Senior Process Engineer Interview Questions and Answers

Relief devices are safety devices used to protect equipment and personnel from overpressure situations.

• Types include pressure relief valves, rupture discs, and safety valves

• Pressure relief valves are the most common type and operate by opening to release excess pressure

• Rupture discs are non-reclosing devices that burst at a predetermined pressure to relieve pressure

• Safety valves are similar to pressure relief valves bu...read more

Relief devices such as Conventional, Balance bellow, and Pilot operated are used in process engineering to protect equipment from overpressure.

• Conventional relief devices are simple and rely on a spring-loaded mechanism to relieve pressure.

• Balance bellow relief devices use a bellows to balance the pressure on both sides of the valve, allowing for accurate pressure relief.

• Pilot operated relief devices use a pilot valve ...read more

Velocity change affects flow in a venturimeter.

• As velocity increases, pressure decreases and vice versa.

• Flow rate is directly proportional to the square root of pressure difference.

• Venturimeter is used to measure flow rate in pipes.

• Flow rate can be calculated using Bernoulli's equation.

PFR is better for zero order reaction as it maintains constant concentration throughout the reactor.

• PFR maintains constant concentration throughout the reactor

• CSTR may result in concentration gradients

• PFR is more efficient for zero order reactions

• CSTR may be more suitable for reactions with changing rate constants

Reactor selectivity is the ability of a reactor to produce a desired product while minimizing the formation of undesired byproducts.

• Reactor selectivity is a key factor in determining the efficiency of a chemical process.

• It is influenced by factors such as reaction conditions, catalysts, and reactant concentrations.

• For example, in a catalytic hydrogenation reaction, high selectivity would mean that the desired product i

Selectivity can be controlled by optimizing reaction conditions, catalyst selection, and process design.

• Optimize reaction conditions such as temperature, pressure, and reactant concentrations

• Select appropriate catalysts to favor desired reactions over side reactions

• Design the process to maximize the desired product yield and minimize byproducts

• Use techniques like separation processes to isolate the desired product

Selectivity is the ratio of desired product to undesired products, while conversion is the percentage of reactant converted to products.

• Selectivity measures the efficiency of a reaction in producing the desired product.

• Conversion measures the extent to which reactants are converted to products.

• High selectivity indicates a high proportion of desired product, while high conversion indicates efficient use of reactants.

• For...read more

Distillation column separates components of a liquid mixture based on differences in boiling points.

• Distillation column uses heat to vaporize liquid mixture

• Vapors rise through column and condense at different heights based on boiling points

• Separated components are collected at different levels of the column

• Bottom of column collects high boiling point components, top collects low boiling point components