Conversion Reactor - Technical Information
The Conversion Reactor simulates a chemical reactor by solving the heat and material balances based on supplied reaction stoichiometry and fractional conversion. There is no limit to the number of simultaneous reactions which may be modeled.
The reaction stoichiometry must be defined in the Reaction Data Sets Window before the reactor performance can be specified.
Calculation Method
The fractional conversion of a specified base component is defined for each reaction. The corresponding changes in the amounts of the other components in the reaction are determined from the stoichiometry. The conversion of the base component may be expressed as a function of temperature by entering the coefficients for the equation:
If there is not sufficient quantity one or more reactant to meet the specified conversions, one of the following courses of action may be specified:
Ø terminate the calculation - this is the default action
Ø continue the calculations with no reaction
Ø add makeup to satisfy the conversion
Ø limit the conversion to the maximum possible with the available reactants
When only library components are present, heat of reaction is normally calculated by PRO/II from heat of formation data. Alternatively, heat of reaction data may be supplied in the Reaction Data - Heat of Reaction Data Window for any or all reactions. If non-library components take part in a reaction, either heat of formation or heat of reaction data must be entered.
By default, the reactor operates isothermally at the feed temperature. A different isothermal temperature or a duty may be specified instead.
Rigorous modeling of two liquid phases is possible by specifying VLLE thermodynamics in the Thermodynamics Main Window.
Feeds and Products
The conversion reactor unit can have any number of feed streams. The inlet pressure is taken to be the lowest pressure of all the feed streams.
The reactor can have up to four process product streams, with each stream containing a different phase. The possible phases are vapor, liquid, decanted water or second liquid, a mixture of liquid and vapor, and solids. If there are multiple product streams leaving the reactor, the phase condition for each stream must be specified using the Product Phases Window.
