Wet Air Oxidizer: Equipment Tab

Variable Definitions, Ranges and Default Values

The following table shows the meaning of the variables appearing in this tab, as well as their default values and their generally acceptable range. Note that due to the manner by which the variables are used by the sizing and costing equations, the range of acceptable values may be further reduced.

Variable	Default Value	Range

◙ Volume The total vessel volume.	0.0 L	Positive
◙ Max Volume The maximum volume that a unit of this type is available for purchase in the market.	20000.0 L	Positive
● Height The internal height of the vessel.	0 m	Positive
● Diameter The internal diameter (or diameter equivalent) of the vessel.	0 m	Positive
○ Height/Diameter The ratio of height to diameter (aka aspect ratio) of the vessel.	5.0	Positive
○ Design Pressure The maximum pressure that the vessel has been designed to withstand.	101.300 bar	Positive
○ Is ASME Vessel? ASME standards of vessel construction will increase the cost of the vessel.	Yes	Yes/No

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Sizing: Design Mode

In Design Mode, the user specifies the Maximum Vessel Volume and the residence time of the liquid in the system, see Wet Air Oxidation operation conditions, and the program computes the Number of Units and the Vessel Volume. If the calculated vessel volume exceeds its maximum possible value (specified through the Equipment tab), the system assumes multiple, identical units operating in parallel with a total vessel volume equal to the calculated.

Sizing: Rating Mode

In Rating Mode, the user specifies the volume and the number of vessels and the program calculates the residence time of the liquid in the system.

Costing

The equipment purchase cost is based on the total vessel volume. By default it is calculated by the program’s built-in model for a Wet-Air Oxidizer, with a minimum costing volume of 0.5 m³.

For more information on this equipment, see Wet Air Oxidizer and Vertical Vessel: Equipment Tab.

For information on the left-hand side variables and options, see Equipment Data Dialog: Equipment tab.