It is divided into two parts. Part I deals with the basic chemicalprocesses. It describes the chemical phenomena of decomposition,combustion, and thermodynamics. The equilibrium laws that govern theseprocesses are described, as well as the basic chemical equations ofchemical equations of chemical reactions.Chemical Equations of Chemical Reactions. The basic chemical equationsof chemical reactions are the most important equations in chemical engineeringbecause these equations determine the value of the reactants and productsin any chemical process. The chemical equations of chemical reactions aregiven in equations, and it is necessary to realize that these equations arewritten in symbolic form.
Symbols in chemical equations are called variables. The upper case isused to represent the element in the chemical equation and the lower caseto represent the symbol that represents the element. The symbol for the elementis called the stoichiometric coefficient.
The two most important applications of chemical engineering are in the areas ofpetrochemicals and energy. The book begins with an overview of the fields ofpetrochemicals and energy, and the unit operations in each field.
The unit operations are grouped into six basic categories. These six classes of unit operations are:
A unit operation is a single physical or chemical operation that produces atleast one product. This text considers only a single product per unit operation;however, a single chemical operation can have multiple physical outcomes. For example,a steam distillation of oil produces gasoline, oil, water and tar (noxious gases).The exact separation of components from a mixture depends upon the chemical processinvolved. For example, using distillation with a boiling point of 350°F (177°C),two components can be separated: one is gasoline, and the other is oil. It is quite obvious thatthe change in the boiling point of oil has an impact on the separation of components.
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