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Process design and Techno-economic Assessment of Absorption-based Mobile Carbon Capture Unit for Heavy Duty Vehicles
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
2024 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The increasing global concern over climate change has driven the need for effective solutions to mitigate greenhouse gas (GHG) emissions, particularly carbon dioxide (CO₂), from key sectors like road transport. This thesis presents a preliminary design and technoeconomic assessment of an absorption-based Mobile Carbon Capture (MCC) unit intended for use in heavy-duty vehicles. The design focuses on the selection of suitable solvents and the sizing of absorption and stripping columns while considering the performance at various operating conditions for different engines (6-cylinder diesel, 5- cylinder methane HPDI, and 4-cylinder methane HPDI). The MCC unit employs postcombustion CO2 capture technology, leveraging chemical absorption with Monoethanolamine (MEA) as the primary solvent. Simulations indicate that the MCC system can operate efficiently across varying engine loads, with adjustments to solvent flow rate and reboiler duty to maintain optimal performance. A cost analysis further evaluates the feasibility of the system, focusing on both capital (CAPEX) and operational (OPEX) expenditures. Results suggest that while significant investment is required, the MCC system offers a viable pathway for reducing CO₂ emissions in the transport sector, contributing to global emission reduction goals.

Abstract [sv]

Den växande globala oron över klimatförändringar har ökat behovet av effektiva lösningar för att minska utsläppen av växthusgaser (GHG), särskilt koldioxid (CO₂), från viktiga sektorer som vägtransport. Denna avhandling presenterar en preliminär design och teknisk-ekonomisk bedömning av en absorptionsbaserad mobil koldioxidavskiljningsenhet (MCC) avsedd för användning i tunga fordon. Designen fokuserar på valet av lämpliga lösningsmedel och dimensioneringen av absorptions- och strippningskolonner, med hänsyn till prestanda under olika driftsförhållanden för olika motorer (6-cylindrig diesel, 5-cylindrig metan HPDI och 4-cylindrig metan HPDI). MCCenheten använder efterförbrännings-teknik för koldioxidavskiljning, där kemisk absorption med Monoetanolamin (MEA) som huvudsakligt lösningsmedel utnyttjas. Simuleringar indikerar att MCC-systemet kan fungera effektivt under varierande motoreffekter, med justeringar av lösningsmedelsflöde och återkokarens uppvärmningskrav för att bibehålla optimal prestanda. En kostnadsanalys utvärderar vidare systemets genomförbarhet, med fokus på både kapitalutgifter (CAPEX) och driftskostnader (OPEX). Resultaten tyder på att även om betydande investeringar krävs, erbjuder MCC-systemet en möjlig väg för att minska CO₂-utsläppen inom transportsektorn, och därmed bidra till globala mål för utsläppsminskningar.

Place, publisher, year, edition, pages
2024. , p. 55
Series
TRITA-ITM-EX ; 2024:503
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-354511OAI: oai:DiVA.org:kth-354511DiVA, id: diva2:1903856
External cooperation
Scania
Subject / course
Thermal Engineering
Educational program
Degree of Master
Presentation
2024-08-20, 00:00
Supervisors
Examiners
Available from: 2024-10-07 Created: 2024-10-07 Last updated: 2024-10-07Bibliographically approved

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CiteExportLink to record
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Citation style
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