Coking of fluid fuels
New procedure shall analyze and avoid reasons
In heating appliances, diesel engines and other technical systems driven by fluid fuels and lubricants, combustion can lead to growing undesirable deposits (coking), which may affect the functionality of the system. Deposits arise during the evaporation of fuels on hot surfaces. The detailed processes are unclear. Within a common research project, the chair for Analytical Chemistry of the University Rostock and the Oel-Waerme-Institut (OWI) want to get to the bottom of the reasons for deposit formation in modern combustion systems.
Within the combustion of fluid fuels on hot surfaces, undesirable deposits may occur. Comparing example of a test apparatus with and without deposits.
OWI Oel-Waerme-Institut GmbH
Aim of the research project is to rebuild and analyze the process of deposit formation in form of a reproducible and under laboratory conditions representable procedure. Suitable seems to be the existing procedure of the thermogravimetric analysis (TGA), which still needs to be enhanced. Afterwards, the TGA built deposits are transferred into the gas phase by further continuous increase of the surface temperature (pyrolysis) or oxidation and investigated via mass spectroscopic analysis (TGA/MS). With help of this procedure, the simulation of processes in the building and regeneration of deposits, which can be observed within technical combustion, under defined thermal boundary conditions is possible for the first time. That allows a transmission of knowledge into the technical development of mixture formation systems for heating systems or fuels and additives. In current research, numerous influencing variables of the deposit formation such as the fuel composition, especially the material and roughness of the wetted surface, are discussed and easily displayed by a suitable selection of the TGA’s sample container. In a second part of the project, the knowledge shall be used to either avoid the deposit formation or to reduce formed deposits by a suitable process control. For this, two test benches are developed by which the tendency for coking of technical mixture formation systems (porous medium and spray formation) can be examined.
Other news from the department science
Most read news
More news from our other portals
See the theme worlds for related content
Topic World Mass Spectrometry
Mass spectrometry enables us to detect and identify molecules and reveal their structure. Whether in chemistry, biochemistry or forensics - mass spectrometry opens up unexpected insights into the composition of our world. Immerse yourself in the fascinating world of mass spectrometry!
Topic World Mass Spectrometry
Mass spectrometry enables us to detect and identify molecules and reveal their structure. Whether in chemistry, biochemistry or forensics - mass spectrometry opens up unexpected insights into the composition of our world. Immerse yourself in the fascinating world of mass spectrometry!
Last viewed contents
Analytical trick accelerates protein studies
Cage with Caps: Selective confinement of rare-earth-metal hydrates in host molecules
New compound that withstands extreme heat and electricity could lead to next-generation energy storage devices - Flexible polymers made with a new generation of the Nobel-winning “click chemistry” reaction find use in capacitors and other applications
House cleaning on the nanoscale - World’s smallest broom
Luminous Molecules - Chemists smooth the path for new and better light sources
Catalyzing a green future - Highly modular metal-organic framework-based materials show great potential for photocatalytic hydrogen production
I can see clearly now - 'Smart glasses' that automatically focus on what wearer sees
Iowa State researchers part of $78 million national effort to develop advanced biofuels
Dow Coating Materials Announces Price Increases for Acrylic and Cellulose Based Products in Europe, Middle East, and Africa
BASF breaks ground on syngas plant at Zhanjiang Verbund site in China - World-scale syngas production facility expected to start up in 2025
Oxea completes new carboxylic acids production plant
