Chemical Reactor

An advance model of chemical Reactor

#Chemical Reactor
Objective:
 A chemical reactor is an enclosed volume in which a chemical
reaction takes place. In chemical engineering, it is generally
understood to be a process vessel used to carry out a chemical
reaction, which is one of the classic unit operations in chemical process
analysis. The design of a chemical reactor deals with multiple aspects
of chemical engineering. Chemical engineers design reactors to
maximize net present value for the given reaction. Designers ensure
that the reaction proceeds with the highest efficiency towards the
desired output product, producing the highest yield of product while
requiring the least amount of money to purchase and operate.
Normal operating expenses include energy input, energy removal, raw
material costs, labour, etc. Energy changes can come in the form of
heating or cooling, pumping to increase pressure, frictional pressure loss
or agitation.
 Chemical reaction engineering is the branch of chemical engineering
which deals with chemical reactors and their design, especially by
application of chemical kinetics to industrial systems.
 The most common basic types of chemical reactors are tanks
(where the reactants mix in the whole volume) and pipes or tubes
(for laminar flow reactors and plug flow reactors)  Both types can be used as continuous reactors or batch reactors,
and either may accommodate one or more solids
(reagents, catalysts, or inert materials), but the reagents and
products are typically fluids (liquids or gases). Reactors
in continuous processes are typically run at steady-state, whereas
reactors in batch processes are necessarily operated in a transient
state. When a reactor is brought into operation, either for the first
time or after a shutdown, it is in a transient state, and key process
variables change with time.
 There are three idealised models used to estimate the most
important process variables of different chemical reactors:
 Batch reactor model,  Continuous stirred-tank reactor model (CSTR), and
 Plug flow reactor model (PFR).
Types:
1.Batch reactor
The simplest type of reactor is a batch reactor. Materials
are loaded into a batch reactor, and the reaction
proceeds with time. A batch reactor does not reach a
steady state, and control of temperature, pressure and
volume is often necessary. Many batch reactors therefore
have ports for sensors and material input and output.
Batch reactors are ty...