Lonsen Kiri Chemical Industries Shift Incharge Interview Questions, Process, and Tips

Solvents are substances that dissolve other substances to form a solution.

• Solvents can be organic or inorganic.

• Examples of organic solvents include ethanol, acetone, and benzene.

• Inorganic solvents include water and ammonia.

• Solvents are commonly used in industries such as pharmaceuticals, paints, and cleaning products.

Solvent recovery is the process of separating and purifying solvents from a mixture for reuse.

• Solvent recovery is important for reducing waste and saving costs in industries that use solvents.

• It involves distillation, evaporation, or other separation techniques to isolate the solvent.

• Recovered solvents can be reused in the same process or sold to other industries.

• Examples of industries that use solvent recovery include...read more

Packed columns use packing material to increase surface area for separation, while tray columns use trays to create stages for separation.

• Packed columns have higher efficiency but lower capacity compared to tray columns.

• Tray columns are more suitable for high pressure and high liquid load applications.

• Packed columns are commonly used in distillation of low viscosity fluids, while tray columns are used for high viscosit...read more

Large diameter is required in vacuum distillation to reduce pressure drop and prevent clogging.

• Reduced pressure in vacuum distillation causes lower boiling points and higher vapor velocities.

• Large diameter helps to reduce pressure drop and prevent clogging of the equipment.

• Smaller diameter can cause higher pressure drop and slower vapor velocities, leading to reduced efficiency.

• Large diameter also allows for better hea...read more

A double mechanical seal is a type of seal that uses two sets of sealing surfaces to prevent leakage in pumps and other equipment.

• Consists of two sets of sealing surfaces

• Used to prevent leakage in pumps and other equipment

• Provides an extra layer of protection against leaks

• Commonly used in industries such as oil and gas, chemical, and pharmaceutical

• Examples include cartridge seals and split seals