How to perform sublimation capture simulation in Aspen? Please, experts, help me.

To simulate sublimation capture in ASPEN, the following steps are required: 1. Set the gas components generated after the reaction in the reactor module. Gas-phase components can be added by selecting the “Compounds” option on the “Input” interface, and then adding the desired gas components. 2. Set up the condenser and collector in the logistics module. In the “Input” interface, select the “UnitOps” option, and then add a Condenser and a Receiver. Set the cooler temperature of the condenser and the pressure of the collector. 3. Run the simulation in the process simulation module. By specifying the input values, reaction conditions, and operational parameters to initiate the simulation, the system will automatically calculate and output the results. Based on the output results, the operating parameters can be optimized and adjusted to improve the process. In short, simulating sublimation capture in ASPEN requires familiarity with the operation of this software. It is recommended to first understand the basic usage of ASPEN before proceeding with the simulation design for sublimation capture. At the same time, relevant literature and materials can be referred to to deepen understanding and improve the simulation results. .

Simulating the phthalic anhydride synthesis unit in Aspen allows for the modeling of gas deposition and capture by adding unit operations for post-reaction gases and deposition. First, add a “blowing tank” unit to the flowchart, which is used to simulate the gas generated after the reaction. In the \"blowing tank\" unit, parameters such as gas outlet conditions and volumetric flow rate are set, and the volume and capacity of the blowing tank are adjusted based on the flow rate of the gas after the reaction, to ensure that the gas receives sufficient delay and cooling time for subsequent sublimation and capture processes. Next, add a “Deposition Tower” unit and a “Collection Tank” unit to the flowchart to simulate the gas after deposition and capture reactions. In the \"Deposition Tower\" unit, parameters such as deposition temperature, total pressure, and inlet gas volumetric flow rate are set, and an appropriate heat transfer method, such as direct heat transfer or indirect heat transfer, is selected based on parameters like gas composition. In the “collection tank” unit, parameters such as the pressure, temperature, and airtightness of the collection tank are set. Finally, a heat exchanger unit is added to the flow diagram to cool the gas in the collection tank; if it is necessary to recover the useful components contained within, further processing steps need to be considered. It should be noted that the processes of gas deposition and capture are influenced by parameters such as gas flow rate, pressure, and temperature after the reaction; therefore, it is recommended to conduct thorough research and measurements on relevant data prior to simulation. At the same time, appropriate unit operations and parameter settings are selected based on the specific conditions to ensure the accuracy and reliability of the simulation results.