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Equation balance

The equilibrium ratios are not fixed in a separation calculation and, even for an isothermal system, they are functions of the phase compositions. Further, the enthalpy balance. Equation (7-3), must be simultaneously satisfied and, unless specified, the flash temperature simultaneously determined. [Pg.114]

DGA Partial derivative of the enthalpy balance equation (7-14) with respect to the vapor-feed ratio. [Pg.321]

Reservoir engineers describe the relationship between the volume of fluids produced, the compressibility of the fluids and the reservoir pressure using material balance techniques. This approach treats the reservoir system like a tank, filled with oil, water, gas, and reservoir rock in the appropriate volumes, but without regard to the distribution of the fluids (i.e. the detailed movement of fluids inside the system). Material balance uses the PVT properties of the fluids described in Section 5.2.6, and accounts for the variations of fluid properties with pressure. The technique is firstly useful in predicting how reservoir pressure will respond to production. Secondly, material balance can be used to reduce uncertainty in volumetries by measuring reservoir pressure and cumulative production during the producing phase of the field life. An example of the simplest material balance equation for an oil reservoir above the bubble point will be shown In the next section. [Pg.185]

The material balance equation relating produced volume of oil (Np stb) to the pressure drop in the reservoir (AP) is given by ... [Pg.186]

Solution of the material balance equations gives the pressure and... [Pg.121]

Knowing the solution of the material balance equations It is easy to calcu>... [Pg.121]

The differential material balances contain a large number of physical parameters describing the structure of the porous medium, the physical properties of the gaseous mixture diffusing through it, the kinetics of the chemical reaction and the composition and pressure of the reactant mixture outside the pellet. In such circumstances it Is always valuable to assemble the physical parameters into a smaller number of Independent dimensionless groups, and this Is best done by writing the balance equations themselves in dimensionless form. The relevant equations are (11.20), (11.21), (11.22), (11.23), (11.16) and the expression (11.27) for the effectiveness factor. [Pg.122]

For ease of exposition, let us limit attention to. two independent reactions--the generalization to more reactions is straightforward. Then the material balance equations take the form... [Pg.152]

In order to Introduce thermal effects into the theory, the material balance equations developed in this chapter must be supplemented by a further equation representing the condition of enthalpy balance. This matches the extra dependent variable, namely temperature. Care must also be taken to account properly for the temperature dependence of certain parameters In... [Pg.156]

As In the case of the material balance equations, the enthalpy balance can be written in dimensionless form, and this introduces new dimensionless parameters in addition to those listed in Table 11.1. We shall defer consideration of these until Chapter 12, where we shall construct the unsteady state enthalpy and material balances, and reduce them to dimensionless form. [Pg.158]

In section 11.4 Che steady state material balance equations were cast in dimensionless form, therary itancifying a set of independent dimensionless groups which determine ice steady state behavior of the pellet. The same procedure can be applied to the dynamical equations and we will illustrate it by considering the case t f the reaction A - nB at the limit of bulk diffusion control and high permeability, as described by equations (12.29)-(12.31). [Pg.168]

Derivation of the working equations of upwinded schemes for heat transport in a polymeric flow is similar to the previously described weighted residual Petrov-Galerkm finite element method. In this section a basic outline of this derivation is given using a steady-state heat balance equation as an example. [Pg.91]

NOTE Alternately, you may want to try using a Tin/HC system which will give an equivalent yield in a much shorter time with the disadvantage that Tin is a much more expensive metal. The balanced equation for the reduction follows ... [Pg.274]

Besides equilibrium constant equations, two other types of equations are used in the systematic approach to solving equilibrium problems. The first of these is a mass balance equation, which is simply a statement of the conservation of matter. In a solution of a monoprotic weak acid, for example, the combined concentrations of the conjugate weak acid, HA, and the conjugate weak base, A , must equal the weak acid s initial concentration, Cha- ... [Pg.159]

The second type of equation is a charge balance equation. A charge balance equation is a statement of solution electroneutrality. [Pg.159]

Note that the concentration of Ca + is multiplied by 2, and that the concentrations of H3O+ and OH are also included. Charge balance equations must be written carefully since every ion in solution must be included. This presents a problem when the concentration of one ion in solution is held constant by a reagent of unspecified composition. For example, in many situations pH is held constant using a buffer. If the composition of the buffer is not specified, then a charge balance equation cannot be written. [Pg.160]

Write a mass balance and charge balance equations for a 0.10 M solution of NaHC03. [Pg.160]

Counting unknowns, we find four ([HE], [E-], [H3O4], and [OH-]). To solve this problem, therefore, we need to write two additional equations involving these unknowns. These equations are a mass balance equation... [Pg.161]

How does the result of this calculation change if we require our assumptions to have an error of less than 1%. In this case we can no longer assume that [HF] >> [F ]. Solving the mass balance equation (6.37) for [HF]... [Pg.162]

From the ladder diagram it appears that we may safely assume that the concentrations of H2L+ and L are significantly smaller than that for HL, allowing us to simplify the mass balance equation to... [Pg.164]

Substituting these equations, along with the equation for into the charge balance equation gives us... [Pg.164]

Note that in writing this mass balance equation, the concentration of Ag(NH3)2i" must be multiplied by 2 since two moles of NH3 occurs per mole of Ag(NH3)2i". The second additional equation is a mass balance on iodide and silver. Since Agl is the only source of N and Ag+, every iodide in solution must have an associated silver ion thus... [Pg.166]


See other pages where Equation balance is mentioned: [Pg.722]    [Pg.1098]    [Pg.1099]    [Pg.1115]    [Pg.2810]    [Pg.116]    [Pg.119]    [Pg.151]    [Pg.157]    [Pg.159]    [Pg.161]    [Pg.162]    [Pg.166]    [Pg.129]    [Pg.102]    [Pg.448]    [Pg.159]    [Pg.159]    [Pg.160]    [Pg.160]    [Pg.160]    [Pg.161]    [Pg.161]    [Pg.161]    [Pg.164]    [Pg.164]   
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Binary Particle Maxwell-Enskog Transport Equation and Balance Laws

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Calculation of Balance Equations

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Coking mass-balance equation

Collocation balance equations

Complex systems material balance equations

Complexation Mass-Balance and Equilibria Equations

Complexation mass balance equation, 90-95 thermodynamics

Component balance equation

Continuous fluid phase balance equations

Conversion energy balance equation

Discrete phases balance equations

Dynamic Mass and Heat Balance Equations

Dynamic balance equation

E Balancing Chemical Equations

Electrochemical processes material balance equations

Electrochemistry II Balancing Equations

Electrochemistry balancing oxidation-reduction equations

Electron Method of Balancing Half-Cell Equations

Electron transfer, balanced equations

Electron-transfer equations, balancing with half-reactions

Energy Balance, Bernoulli Equation

Energy balance /equation

Energy balance /equation 664 Subject

Energy balance equation (first law

Energy balance equation, incompressible fluid

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Energy balance equations equation

Enthalpy balances cell equations

Enthalpy term, energy balance equation

Enthalpy, balance equations

Entropy balance equation

Entropy balance equation approach

Equation half-, balancing

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Equations for Mass Balance

Equations for mass and energy balance

Equations material balance equation

Equations of Thermal Balance

Equations of balance

Equations, balancing calculations from

Equations, balancing electron-transfer reactions with

Equations, balancing half reactions

Equations, balancing partial

Equations, balancing thermochemical

Equations, stoichiometric balancing

Equilibrating balance equations

Examples balancing equation

Exergy balance equation

Explicit balance equations for simple cases

Fixed fundamental balance equations

Fluid activities mass balance equations

Fluidized beds force balance equations

Force balance differential equations

Force-balance equations

Forced convection material balance equations

Form of the Balanced Equation

Formulating Material Balance Equations (Steady-State and Continuous Operation)

Fractionation models balance equation

Fugacity balance equation

Fundamental Balance Equations of Fixed Bed Reactors

Gas-phase balance equations

General formulation of the balance equations

General heat balance equation of a calorimetric system

General mole balance equation

Generalized Mass Balance and Design Equations

Generalized population balance equation

Generalized population balance equation GPBE)

Generalized population balance equation consistency

Generalized population balance equation moment method

Generalized population balance equation moments

Generalized population balance equation nucleation

Generalized population balance equation numerical solution

Generic balance equation

Governing equations of mass and energy balance

Heat balance equation

Heat factor balance equation

Heat flux density balances equations

Infinite balanced equations

Initiator mass balance equation

Intermediate sections material balance equation

Ion-electron method for balancing equations

Ionic redox equations, balancing

Isotopic balance equation

Kinetic Equations and Mass Balances

Kinetic Schemes and Mass-Balance Equations

Kinetic mass balance equations

Kinetic rate constants mass balance equations

Linear momentum balance equations

Local Continuum Mechanical Population Balance Equation

MESH (Material balance, Equilibrium equations

Macroscopic balance, equations

Magnetic moment balance equations

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Mass and Heat Balance Equations in Chromatography

Mass balance differential equation

Mass balance equation

Mass balance equation (conservation

Mass balance equation equilibrium calculations

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Mass balance equations, setup and solution

Mass balance equations, setup and solution model

Mass balance-based differential equations

Mass balances and reactor equations

Mass balances continuity equation

Mass momentum and energy balance equation

Mass transfer continuity equational material balance

Material Balance Design Equation in Terms of Volume

Material Balance Equations for Reactive Systems (Steady-State and Continuous Operation)

Material balance Continuity equation Plug-flow reactor

Material balance equations, mass transfer

Material balance equations, mass transfer model

Material balance method equations

Maxwell Transport Equation and Balance Laws

Mechanical energy balance equation

Membranes external balance equations

Methane balanced chemical equation

Micromomentum balance equations

Microscopic balance equation

Mobile phase material balance equation

Modeling of Processes in Microreactors Based on General Balance Equation

Molar flow rates balance equation

Moles balancing chemical equations

Moment Transformation of the Population Balance Equation

Moment equation, population balance method

Moment equations, population balance

Momentum balance Euler equations

Momentum balance equation

Neutron, balance equation

Neutron, balance equation thermal

Nonideal reactors balance equations

Nuclear equations balanced

Nuclear fission balancing equations, 59

Nuclear reactions, 122 balanced equations representing

Numerical Solution of the Population Balance Equation

Obtaining Ratios from a Balanced Chemical Equation

On the balancing of equations for redox reactions

One-Temperature Approach to Vibrational Kinetics and Energy Balance of CO2 Dissociation in Non-Equilibrium Plasma Major Equations

Overall Heat Balance and Design Equations

Overall Mass Balance and Continuity Equation

Oxidation Numbers and Balancing Redox Equations

Oxidation balancing equations

Oxidation-reduction balancing equations for

Oxidation-reduction balancing ionic redox equations

Oxidation-reduction reactions balanced chemical equations

Oxidation-reduction reactions balancing equations

Oxidation-reduction reactions balancing simple redox equations

Oxygen balance equation

Parameters in Mass Balance Equations

Population balance equation

Population balance equation solutions

Population balance equation, dispersive

Population balance equation, dispersive growth

Population balance equation, mass transfer

Population balance equations general case

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Population balance, equation moment transformation

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Population-balance equation definition

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Process of Balancing Equations

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Redox chemistry balanced equations

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Species Balances and Design Equations

Species balance equations

Steady-State Mass and Heat Balance Equations

Steady-State Momentum (Force) Balance Equation

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Stoichiometry balanced chemical equations used

Stoichiometry balanced equations

Stoichiometry balancing chemical equations

Stoichiometry molar ratios from balanced equations

System of mass balance equations

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