Stoichiometric (Yield) Reactor¶
The IDAES Stoichiometric reactor model represents a unit operation where a single material stream undergoes some chemical reaction(s) subject to a set of extent or yield specifications.
Degrees of Freedom¶
Stoichiometric reactors generally have degrees of freedom equal to the number of reactions + 1.
Typical fixed variables are:
- reaction extents or yields (1 per reaction),
- reactor heat duty (has_heat_transfer = True only).
Model Structure¶
The core Stoichiometric reactor unit model consists of a single Holdup0D (named holdup) with one Inlet Port (named inlet) and one Outlet Port (named outlet).
Construction Arguments¶
Stoichiometric reactor units have the following construction arguments:
- property_package - property package to use when constructing Property Blocks (default = ‘use_parent_value’). This is provided as a Property Parameter Block by the Flowsheet when creating the model. If a value is not provided, the Holdup Block will try to use the default property package if one is defined.
- property_package_args - set of arguments to be passed to the Property Blocks when they are created.
- inlet_list - list of names to be passed to the build_inlets method (default = None).
- num_inlets - number of inlets argument to be passed to the build_inlets method (default = None).
- outlet_list - list of names to be passed to the build_outlets method (default = None).
- num_outlets - number of outlets argument to be passed to the build_outlets method (default = None).
Additionally, Stoichiometric reactor units have the following construction arguments which are passed to the Holdup Block for determining which terms to construct in the balance equations.
Argument | Default Value |
---|---|
material_balance_type | ‘component_phase’ |
energy_balance_type | ‘total’ |
momentum_balance_type | ‘total’ |
dynamic | False |
include_holdup | False |
has_rate_reactions | True |
has_equilibrium_reactions | True |
has_phase_equilibrium | False |
has_mass_transfer | False |
has_heat_transfer | True |
has_work_transfer | False |
has_pressure_change | False |
Additional Constraints¶
Stoichiometric reactor units write no additional Constraints beyond those written by the Holdup Block.
Variables¶
Stoichiometric reactors units add the following additional Variables beyond those created by the Holdup Block.
Variable | Name | Notes |
---|---|---|
\(V_t\) | volume | Only if include_holdup = True, reference to holdup.volume |
\(X_{t,r}\) | rate_reaction_extent | Only if has_rate_reactions = True, reference to holdup.rate_reaction_extent |
\(Q_t\) | heat | Only if has_heat_transfer = True, reference to holdup.heat |