Simulation of the acrylic acid production process through catalytic oxidation of gaseous propylene using ChemCAD ® simulator

Abstract

In the following study, the simulation of the polymeric-grade acrylic acid (AA) production process is carried out using the simulator ChemCAD ® version 5.2.0., in order to obtain mass balance results in all the process streams and also to know the most important design parameters of the equipment used. Two sensitivity studies were carried out: 1) influence of the absorption tower operating temperature in the amount of AA obtained at the bottom column; and 2) influence of the recovery column working pressure in the amount of acetic acid obtained on it. At the recovery column a liquid bottom stream containing AA with 99.90 % purity is obtained, while in the acids column the AA is obtained with 99.86 % purity at the bottom stream. It's recommended that the absorption tower operates at a temperature near 20 °C, while the recovery column must run under vacuum conditions, in order to reduce both the AA and acetic acid losses.

Waste apple pomace conversion to acrylic acid: Economic and environmental assessment

“…The initial oxidation of propylene reactions in reactor 1 are presented in the Table S3. Figure 3 subsequently shows that the hot gaseous mixture, containing mostly acrolein, is transferred to the next reactor 2, where acrolein conversion to AA is achieved under the action of vanadium-molybdenum oxide, at the temperature of 300 o C. An AA production yield of 85%, is attained in reactor 2 [73]. The gaseous product is then cooled from 300 °C to 25 °C with the the liquid-liquid extraction module discussed in FD pathway above executed to facilitate AA recovery.…”

“…To produce AA from propylene, a well-established method were used [73]. According to Sanchez et al, [73], the stream containing the propylene is fed to a reactor together with air compressed at the pressure of 5.95 atm and low pressure steam at the pressure and temperature of 5.95 atm and 159 o C respectively. The propylene, air and steam feed fractions are maintained at 1/7.75/3.75 (mass basis) [73].…”

“…According to Sanchez et al, [73], the stream containing the propylene is fed to a reactor together with air compressed at the pressure of 5.95 atm and low pressure steam at the pressure and temperature of 5.95 atm and 159 o C respectively. The propylene, air and steam feed fractions are maintained at 1/7.75/3.75 (mass basis) [73]. In the first reactor, the propylene is then oxidized to facilitate its initial conversion to acrolein, AA, acetic acid and CO2 with conversions of 79%, 6%, 12% and 3% respectively achieved, under the action of Bismuth molybdate catalyst at the temperature of 350 o C [73].…”

“…The propylene, air and steam feed fractions are maintained at 1/7.75/3.75 (mass basis) [73]. In the first reactor, the propylene is then oxidized to facilitate its initial conversion to acrolein, AA, acetic acid and CO2 with conversions of 79%, 6%, 12% and 3% respectively achieved, under the action of Bismuth molybdate catalyst at the temperature of 350 o C [73]. The initial oxidation of propylene reactions in reactor 1 are presented in the Table S3.…”

Simulación del proceso de producción de anhídrido maleico mediante el simulador ChemCAD®

“…Entre los simuladores más utilizados en la actualidad se encuentra el ChemCAD ® , el cual ha sido empleado para simular diferentes procesos productivos, entre los que se encuentran la fabricación de acetaldehído (Eliasson, 2010), biodiésel (Chilev & Simeonov, 2014), ácido monocloroacético (Greeshma et al, 2014), epiclorohidrina (Almena & Martín, 2016), estireno (Pérez et al, 2017) y ácido acrílico (Pérez et al, 2019), así como la deshidratación de propanol (Wyczesany, 2017).…”