Solids

1. Basic understanding of process engineering
2. Aspen Plus Software installed on your computer
3. Have a Computer
4. Have a Desire

In this part the instructor gives an example of crusher modeling in Aspen Plus. Throughout the examples he explains the concept behind each model in Aspen Plus. Then he names different solid classifications and streams and sub-streams used in Aspen Plus.Moreover he elucidates what PSD means and how process engineers can define PSD.In order to get the results, he lets the software calculate the outlet PSD based on three calculation methods.

Overview

Crusher simulates the breaking of solid particles.
Crusher models the wet or dry continuous operation of:
• Gyratory jaw crushers
• Single roll crushers
• Multiple roll crushers
• Cage mill impact breakers
Crusher assumes the feed is homogeneous. The breaking process creates fragments in the outlet solids stream with the same composition as in the feed stream.
Crusher does not account for heat produced by the breaking process.

In this part the trainer devotes his time to simulation of fluidized bed in Aspen Plus.At first he explains how Aspen Plus treats the Fluidized Bed and then talks about different approaches taken by Aspen Plus.Then he starts simulating the process and explains which specifications Aspen Plus requires to be able to run the fluidized bed. Also he elucidates how the reaction for that solid process could be created.

Overview

FluidBed models fluidized bed units. Small solid particles enter the unit and a gas stream enters the bottom at a sufficient velocity to fluidize the bed of solid particles in the unit, causing it to behave like a liquid. Larger particles whose settling velocity is greater than the velocity of the gas remain in the bottom of the unit, while lighter particles may be carried with the gas. Heat exchanger coils within the bed can be used to transfer heat to the particles. Reactions may occur within the fluidized bed.

In this part the instructor teaches how drying process could be simulated in Aspen Plus. To do so, he dedicates a good time for clarification of this model in Aspen Plus and which information Aspen Plus demands to run the model.

Overview

Dryer simulates any type of continuous dryer. Dryers evaporate volatile moisture components from wet solids by applying energy supplied by hot inlet gas streams, heated surfaces, or more rarely, some other method such as dielectric heating.To handle a wide variety of types of drying equipment, Dryer calculates the heat requirement and conditions of exit streams from the specification of exit moisture content but does not attempt to predict drying performance based on drying rates.

In last part the trainer shows how crystallization process could be modeled in Aspen Plus.

Overview

Crystallizer models a mixed suspension, mixed product removal (MSMPR) crystallizer. It performs mass and energy balance calculations. You have the option of determining the crystal size distribution.
Crystallizer assumes that the product magma leaves the crystallizer in equilibrium. The mother liquor in the product magma is saturated.
The feed to Crystallizer mixes with recirculated magma and passes through a heat exchanger before it enters the crystallizer. The product stream from Crystallizer contains liquids and solids. You can pass this stream through a hydro cyclone, filter, or other fluid solid separator to separate the phases. Crystallizer can have an outlet vapor stream.