Which reactors are used in pharmaceutical companies?
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types of reactors used in pharma industry
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hey there!!
First of all, there are 2 broad categories of reactors -
. Both types are used in the industry as per need and application.
First I would like to tell you about the reactors used in continuous processes.
:-
Continuous flow stirred tank reactor. Like others have said, CSTR, yes, is the most used reactor in chemical industry. To start with, it’s the most simple reactor considering its use in continuous process. Inflow, outflow to and fro to a container having a stirrer. But as an engineer you obviously know that things are that easy only in the textbooks for learning.These CSTRs are designed according the application and requirements of the process, for example in most cases CSTR is covered with heating/cooling jacket for controlling temperature, baffles are employed inside the reactor to increase turbulence for improving mixing efficiency.
:-
- plug flow reactor is another reactor used in continuous processes. Advantages over CSTR? No back mixing is the major one (Ideally). But due to its tubular design it is hardly employed in a very large scale industry. Large dia of tube will lead to turbulence even at moderate flow rates and which will lead to back mixing eventually. PFR is useful for fast and very fast reactions where you don’t particularly need large residence time. In special cases where it is used for moderate or slow reactions, the tube length is large and it’s design is like a coil. Such PFRs are very costly because they are difficult to fabricate.
there are many more types of reactors but i have explained only 2.
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First of all, there are 2 broad categories of reactors -
First I would like to tell you about the reactors used in continuous processes.
Continuous flow stirred tank reactor. Like others have said, CSTR, yes, is the most used reactor in chemical industry. To start with, it’s the most simple reactor considering its use in continuous process. Inflow, outflow to and fro to a container having a stirrer. But as an engineer you obviously know that things are that easy only in the textbooks for learning.These CSTRs are designed according the application and requirements of the process, for example in most cases CSTR is covered with heating/cooling jacket for controlling temperature, baffles are employed inside the reactor to increase turbulence for improving mixing efficiency.
- plug flow reactor is another reactor used in continuous processes. Advantages over CSTR? No back mixing is the major one (Ideally). But due to its tubular design it is hardly employed in a very large scale industry. Large dia of tube will lead to turbulence even at moderate flow rates and which will lead to back mixing eventually. PFR is useful for fast and very fast reactions where you don’t particularly need large residence time. In special cases where it is used for moderate or slow reactions, the tube length is large and it’s design is like a coil. Such PFRs are very costly because they are difficult to fabricate.
there are many more types of reactors but i have explained only 2.
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