GATE Exam » GATE Study Materials » Chemical Engineering » Equipment for Distillation

Equipment for Distillation

Distillation requires utilisation of equipment so that the transformation process can be operated in the laboratory with ease and the cycle thus gets sustained.

Distillation is referred to as the process by which involves the transformation of liquid in a vapour that is eventually precipitated back in liquid form. It can also be stated as the separation process of mixture components which is based on distinct boiling points. Distillation might involve chemical changes like destructive distillation which might be utilised in the separation process which thus increases the concentration concerning selected components within the mixture. In application of industry, distillation is considered as a unit operation of practical importance and it is referred to as a physical separation rather than chemical reaction.

Distillation on units: Discussion

Distillation is stated as the method used to convert the liquid state into vapour state and then reverse the conversion process by converting vapour state into liquid through condensation. Distillation process is of two key types which are Simple distillation and fractional distillation. Simple distillation is utilised when the point of evaporation of two liquids is significantly distinct from each other.

In a simple distillation process, the mixture is warmed up to rotate volatile components from a liquid in vapour. Then the vapour passes and rises within the condenser and finally, it gets cooled to stimulate vapour condensation which is collected. 

Fractional distillation can be used when the components are very close. In this process, the mixture is heated to vaporise and undertakes a fractionating column. The rising heat of vapour forces liquid to vaporise by moving it with the column which eventually yields samples with high purity and more volatile components of mixture.

Distillation equipment: Explanation

For smooth execution of the distillation process in the laboratory, use of specific equipment is necessary which can effectively execute the entire process. Equipment that is used in the process are Reboiler, condenser and burner flask. 

Reboiler aids in warming up the source liquid which is the first stage of the process. Second equipment is condenser which cools down the heated component back to the liquid state and the last one is the burner flask which is utilised for heating purposes and exposing the components to flame. Equipment is crucial as the key purpose of distillation is to initiate an immediate contact uniting descending liquid and ascending vapour through creation of a large completely refreshed interfacial area.

Distillation on unit: Process

Distillation process initiates by heating up the component and outreaches the point of a bubble of more volatile components in which some molecules of the volatile component transition into the gas phase which then travels upwards in the condenser. The vapour travels in the inner section of the condenser in which the vapour is liquidised through cooling of the component flow within the condenser’s outer section. This liquidised vapour is called distillate as well as it is collected into a graduated cylinder. As distillation progresses, temperature needed to warm up the solution increases so as the volatile component warms off earlier. Thus, the distillate composition changes from time to time. At the early stage of distillation, distillate is considered as rich concerning more volatile components and in the mid distillation stage, it consists of a mixture comprising two key components and finally, at the last stage of distillation, distillation is signified as rich concerning components with less volatility. Thus, it can be stated that performing a systematic approach in the distillation process can assist the researchers to execute the conversion process more efficiently as well it purifies the components involved in liquid mixture to vaporise in a vapour state and further retransform it in liquid state.

Conclusion

Distillation process can be stated as the conversion of one state into another state which further implies the alteration of vapour into liquid. It concludes that execution of the distillation process in the laboratory should be processed effectively to obtain sufficient outcomes. It further concludes that effective utilisation of equipment in the distillation process can aid in purifying the components of liquid as well as vapour state. The main purpose of following the distillation process is to separate the mixture components into more concentrated components of the original mixture. Thus, it might help in gasoline production, xylene, paraffin, and many others. 

faq

Frequently asked questions

Get answers to the most common queries related to the GATE Examination Preparation.

What does distillation on a unit signify?

Ans. Distillation on a unit signifies the device which is used in the process of distillation to convert liqu...Read full

What is the equipment required for distillation?

Ans :Distillation can be stated as the process of purifying and separating liquid mixture component...Read full

How is the distillation process being executed in the laboratory?

Ans :Distillation process is executed in the laboratory by following some steps which imply heating...Read full

Why is distillation important?

Ans. Distillation is considered as important because it aids in purifying comparatively pure liquids to get r...Read full