Table of Contents
What is the performance equation of plug flow reactor?
A material balance on the differential volume of a fluid element, or plug, on species i of axial length dx between x and x + dx gives: [accumulation] = [in] – [out] + [generation] – [consumption]
How do you calculate the flow rate of a reactor?
1) Flow rate Q=V/RT That is Flow rate (Q) in ml/min is equal to the reactor volume (V) in ml, divided by the Residence Time (RT) in minutes. It can be measured empirically in a reactor in steady state, as the volume of effluent from the reactor per unit of time.
Why PFR is used for gas phase reaction?
PFR always preferred here because of heterogeneous reactions, variable density systems , capacity to handle huge volumes , gas phases , higher conversion at the same throughput n space time and no moving part inside that makes high availability factor.
How do you calculate the volume of a reactor?
Popular Answers (1)
- Space velocity = flow rate of the reactants/ the reactor volume.
- GHSV =Hourly volumetric feed gas flow rate/reaction volume.
- LHSV= Hourly volumetric feed liquid flow rate/reaction volume.
- WHSV=Hourly mass feed flow rate/ Catalyst mass.
What is performance improvement formula?
The two performance improvement formulas that make sense to me are these: Improvement = (b – a)/b, where b is the response time of the task before repair, and a is the response time of the task after repair.
What is a design equation?
Equation which, based on production measurements or specifications, provides a performance property useful in design calculations. NOTE A design equation can be defined by applying reasonable extremes to the variables in a limit state equation to arrive at a conservative value of expected performance.
What is the design equation for a plug flow reactor?
Consider j plug flow reactors connected in series and let/i,/2,/3, -fh >/ represent the fraction conversion of the limiting reagent, leaving reactors 1, 2, 3,. J. For each of the reactors considered above, the appropriate design equation is 8.2.7.
How to calculate the volume of a gas phase reactor?
They should be equal. Given that the system is gas phase and isothermal, determine the reactor volume when X = 0.8 X e . First calculate X e : One could then use Polymath to determine the volume of the PFR. The corresponding Polymath program is shown below.
What is XF in a plug flow reactor?
where V is the volume of the reactor (m 3 ), FAO is the mass flow rate of the feeding stream (kg/h), R is the recycle ratio, Xf is the conversion of products, and (– rA) is the kinetic expression of the chemical reaction [9]. The plug flow reactor is the second-most primary ideal reactor and is similar to the continuous stirred tank bioreactor.
What is unique about plug flow reactors?
Gary L. Foutch, Arland H. Johannes, in Encyclopedia of Physical Science and Technology (Third Edition), 2003 Plug flow reactors are unique in the sense that operation in parallel or series give the same conversion if the space time is held constant.