L5-Process & Process Variables - 1 Process&...

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Unformatted text preview: 1 Process & Process Variables 2 PROCESS A process is any operation or series of operations by which a particular objective is accomplished. The operations cause a physical or chemical change in a substance or mixture of substances. The material that enters a process is referred as the INPUT or FEED , and that which leaves is the OUTPUT or PRODUCT . It is common for processes to consist of multiple steps, each of which is carried out in a process unit, and each process unit has associated with it a set of INPUT and OUTPUT process streams. 3 PROCESS Process Unit INPUT or FEED OUTPUT or PRODUCT Process Unit 1 INPUT 1 OUTPUT 1 or INPUT 2 Process Unit 2 OUTPUT 2 Generally, the INPUTs and OUTPUTs are known as process streams. 4 PROCESS UNIT There are a number of process unit. Each of the process unit is selected based on the individual function. Most of the process units are used for the physical separation particularly, • Distillation-separation of mixture liquids based on boiling point • Absorption-separation of mixture of gases based on gas solubility in liquid solvent • Adsorption-separation of mixture of liquids or gases based on affinity into solid adsorbent • Heat Exchanger-particularly for condenser, separation of mixture of gases by removing heat at lower temperature • Crystallization- separation of mixture of liquids by vaporizing the liquid component and remaining the dissolved solid component to form crystal. • Extraction- separation of mixture of liquid based on liquid affinity into liquid solvent. • Membrane-separation of mixture of liquids or gases or mixture solids & gases based on molecular sizes. • Dryer- separation of mixture of solid & liquid by removing the liquid component by heating. 5 PROCESS UNIT and for conversion to the desired products particularly, • Reactor- converting reactants into desired products by the present of catalyst....
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This note was uploaded on 08/08/2009 for the course CHEMICAL 11189 taught by Professor Dr.azmi during the Spring '09 term at International University in Germany.

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L5-Process & Process Variables - 1 Process&...

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