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  2. Plug flow reactor model - Wikipedia

    en.wikipedia.org/wiki/Plug_flow_reactor_model

    A real plug flow reactor has a residence time distribution that is a narrow pulse around the mean residence time distribution. A typical plug flow reactor could be a tube packed with some solid material (frequently a catalyst). Typically these types of reactors are called packed bed reactors or PBR's.

  3. Damköhler numbers - Wikipedia

    en.wikipedia.org/wiki/Damköhler_numbers

    As can be seen, as the Damköhler number increases, the other term must decrease. The ensuing polynomial can be solved and the conversion for the rule of thumb Damköhler numbers found. Alternatively, one can graph the expressions and see where they intersect with the line given by the inverse Damköhler number to see the solution for conversion.

  4. Space velocity - Wikipedia

    en.wikipedia.org/wiki/Space_velocity

    Space velocity may refer to: Space velocity (astronomy) , the velocity of a star in the galactic coordinate system Space velocity (chemistry) , the relation between volumetric flow rate and reactor volume in a chemical reactor

  5. Continuous stirred-tank reactor - Wikipedia

    en.wikipedia.org/.../Continuous_stirred-tank_reactor

    The continuous stirred-tank reactor (CSTR), also known as vat-or backmix reactor, mixed flow reactor (MFR), or a continuous-flow stirred-tank reactor (CFSTR), is a common model for a chemical reactor in chemical engineering and environmental engineering. A CSTR often refers to a model used to estimate the key unit operation variables when using ...

  6. Spacetime diagram - Wikipedia

    en.wikipedia.org/wiki/Spacetime_diagram

    A spacetime diagram is a graphical illustration of locations in space at various times, especially in the special theory of relativity.Spacetime diagrams can show the geometry underlying phenomena like time dilation and length contraction without mathematical equations.

  7. Attainable region theory - Wikipedia

    en.wikipedia.org/wiki/Attainable_Region_Theory

    Simulated line graph of two sets of composition of two substances (Ca and Cb) obtained using attainable region theory. Desired optimal region circled. Attainable region (AR) theory is a branch of chemical engineering , specifically chemical reaction engineering , that uses geometric and mathematical optimization concepts to assist in the design ...

  8. Residence time - Wikipedia

    en.wikipedia.org/wiki/Residence_time

    The residence time of a fluid parcel is the total time that the parcel has spent inside a control volume (e.g.: a chemical reactor, a lake, a human body).The residence time of a set of parcels is quantified in terms of the frequency distribution of the residence time in the set, which is known as residence time distribution (RTD), or in terms of its average, known as mean residence time.

  9. Phase space - Wikipedia

    en.wikipedia.org/wiki/Phase_space

    The phase space of a physical system is the set of all possible physical states of the system when described by a given parameterization. Each possible state corresponds uniquely to a point in the phase space. For mechanical systems, the phase space usually consists of all possible values of the position and momentum parameters.