TY - JOUR

T1 - Comparison and techno-economic evaluation of process routes for lower olefin production via Fischer–Tropsch and methanol synthesis

AU - Markowitsch, Christoph

AU - Lehner, Markus

AU - Maly, Markus

N1 - Publisher Copyright: © 2023 The Authors

PY - 2023/9/22

Y1 - 2023/9/22

N2 - This paper describes the simulation and techno-economic evaluation of a carbon dioxide capture and utilization unit integrated in a cement plant with a capacity of 10,000 tons of CO 2 per year. The aim is to utilize CO 2 along with hydrogen to produce lower olefins (C 2–C 4), the feedstock for polyolefin production. In a first step, three process routes, namely a Fischer–Tropsch synthesis with steam cracker, a methanol synthesis with rWGS syngas production and a methanol synthesis with direct hydrogenation of CO 2, latter two followed by a methanol-to-propylene unit, are simulated in ASPEN Plus V12.1®. Furthermore, the effect of a high- and a low-temperature electrolysis on key performance indicators are also considered in the evaluation. Additionally, an estimation of investment, operating and specific net production costs (NPC PR) of the different process routes is made. The evaluation is based on the comparison of calculated global efficiencies, specific energy consumption (SEC), NPC Pr and yields of the lower olefine products (C 2–C 4). The power-to-lower olefin plant, consisting of an amine scrubber unit, a PEM electrolysis and a Fischer–Tropsch synthesis with downstream steam cracker proves to be the most efficient process route for polyolefin production, resulting in a global efficiency of 38.2 %, an SEC of 34.4 kWh/kg and an NPC Pr of 14.92 EUR/kg of lower olefine product.

AB - This paper describes the simulation and techno-economic evaluation of a carbon dioxide capture and utilization unit integrated in a cement plant with a capacity of 10,000 tons of CO 2 per year. The aim is to utilize CO 2 along with hydrogen to produce lower olefins (C 2–C 4), the feedstock for polyolefin production. In a first step, three process routes, namely a Fischer–Tropsch synthesis with steam cracker, a methanol synthesis with rWGS syngas production and a methanol synthesis with direct hydrogenation of CO 2, latter two followed by a methanol-to-propylene unit, are simulated in ASPEN Plus V12.1®. Furthermore, the effect of a high- and a low-temperature electrolysis on key performance indicators are also considered in the evaluation. Additionally, an estimation of investment, operating and specific net production costs (NPC PR) of the different process routes is made. The evaluation is based on the comparison of calculated global efficiencies, specific energy consumption (SEC), NPC Pr and yields of the lower olefine products (C 2–C 4). The power-to-lower olefin plant, consisting of an amine scrubber unit, a PEM electrolysis and a Fischer–Tropsch synthesis with downstream steam cracker proves to be the most efficient process route for polyolefin production, resulting in a global efficiency of 38.2 %, an SEC of 34.4 kWh/kg and an NPC Pr of 14.92 EUR/kg of lower olefine product.

KW - Power to Liquid Olefins

KW - Carbon capture and utilization

KW - Reverse water gas shift (rWGS)

KW - Methanol synthesis

KW - Fischer-Tropsch synthesis

KW - Carbon capture and utilization

KW - Fischer–Tropsch synthesis

KW - Methanol synthesis

KW - Power-to-lower olefins

KW - Reverse water gas shift (rWGS)

UR - http://www.scopus.com/inward/record.url?scp=85171735665&partnerID=8YFLogxK

U2 - 10.1016/j.ijggc.2023.103985

DO - 10.1016/j.ijggc.2023.103985

M3 - Article

VL - 129.2023

JO - International Journal of Greenhouse Gas Control

JF - International Journal of Greenhouse Gas Control

SN - 1750-5836

IS - October

M1 - 103985

ER -