Chemical-Looping Combustion with Fuel Oil in a 10 kW Pilot Plant
Journal article, 2014

A fuel reactor with a fuel-injection system for liquid fuels was designed and built for a chemical-looping reactor system with the nominal fuel input of 10 kWth. The gas velocities in the riser section and at the gas-distribution nozzles of this unit are comparable to those of industrial circulating fluidized-bed boilers. Proof-of-concept experiments were performed with a calcium manganite-based oxygen carrier and a fuel oil with low sulfur content. Fuel conversion was high but not complete, and most of the fuel carbon was converted to CO2 in the fuel reactor. Long-term experiments were performed using an ilmenite oxygen-carrier. The oxygen carrier was exposed to fluidization at hot conditions (more than 600°C) for about 204 h, out of which fuel was injected during a total of 66.6 h. The parameters temperature, fuel flow, steam flow in the fuel reactor, fluidization medium in the fuel reactor, and air flow in the air reactor were varied to observe trends in fuel conversion. Most of the experiments were carried out with a fuel flow corresponding to 4 kWth and an oxygen carrier-to-fuel ratio of about 2100 kg/MWth. At 1050°C the fuel could be oxidized to about 87%, and up to 88% of all carbon leaving the fuel reactor was in the form of CO2. No defluidization or agglomeration problems were experienced over the course of the experimental campaign.

carbon capture and storage (CCS)

ilmenite

chemical-looping combustion (CLC)

fuel oil

CO2 capture

calcium manganite

liquid fuel

Author

Patrick Moldenhauer

Chalmers, Energy and Environment, Energy Technology

Magnus Rydén

Chalmers, Energy and Environment, Energy Technology

Tobias Mattisson

Chalmers, Energy and Environment, Energy Technology

Ali Hoteit

Saudi Arabian Oil Company (Saudi Aramco)

Aqil Jamal

Saudi Arabian Oil Company (Saudi Aramco)

Anders Lyngfelt

Chalmers, Energy and Environment, Energy Technology

Energy & Fuels

0887-0624 (ISSN) 1520-5029 (eISSN)

Vol. 28 9 5978-5987

Driving Forces

Sustainable development

Subject Categories

Energy Engineering

Areas of Advance

Energy

DOI

10.1021/ef5014677

More information

Created

10/6/2017