CLC Hot Rig - Chemical Looping Combustion Rig

Facility Location
City & country
Trondheim (Norway)
Sem Sælands vei 11, 7034
Description & contacts of the access provider
Legal name of organisation
SINTEF ER - SINTEF Energy Research
Infrastructure contact - Primary contact
Øyvind Langørgen
RICC contact - Secondary contact
Sigurd Weidemann Løvseth
Facility Availability
Unit of access
Availability per year
Minimum 2 weeks
Expected duration of single experiment:
1 week including preparations, test runs and wrap-up.
Operational or other constraints
Specific risks:
Tests must be planned well ahead because of constraints on gas delivery, air compressor etc. Oxygen carriers must be provided by the user and an amount of about 150 kg will be needed. Necessary instructions for operation is important in order to reduce risks, but one experienced person from SINTEF ER will anyhow have to participate. Most important risks are related to the handling of large amounts of oxygen carriers and handling and use of combustible gases

The CLC rig is a Double Loop Circulating Fluidized Bed reactor system used for research on chemical looping combustion. The design values are 150 kW gaseous fuels input and reactor temperature of 1000°C. The rig consists of an Air Reactor (AR) and a Fuel Reactor (FR), interconnected by divided loop-seals and a bottom lifter. The reactor design is flexible as the reactors can be run individually because of the divided loop seals, and the fuel reactor can both be run as a CFB and as a bubbling bed because of the possibilities of using the bottom lifter. The reactors are 6 m tall with internal diameters 230 mm and 154 mm for AR and FR, respectively. The reactor system is equipped with exhaust gas coolers as well as cooling panels within the air reactor. The coolers can be cooled with pressurized air or steam. The main operational characteristics of the rig can be listed as follows:

  • Air feed: flow rate up to 410 kg/h, preheat temperature 20 – 900°C
  • Reactor pressure up to 300 mbar (g) and temperature up to 1000°C.
  • CH4, propane, N2 and CO2 fed at varying pressures from bottles
  • Total pressurized air supply: 10 m3 /min air at 8 bar
  • Exhaust gas monitoring with IR analyzers, O2 analyzer and a FTIR analyzer covers a large range of compounds.

The control system is based on a National Instruments compact RIO controller. It is programmed using LabVIEW which enables us to execute quick changes in the control system software. It communicates with a Windows based system over network using an ethernet connection. This also enables other clients (i.e laptops, smart phones) to access the data acquired by the system. The control system currently counts 136 input channels and output channels, analogue and digital.

State of the art, uniqueness, & specific advantages

The SINTEF ER CLC Rig is currently one of the largest existing CLC laboratory rigs. The influence of small-scale effects is less pronounced and the results will be more relevant for scale-up to larger plants. The facility is well suited to perform tests of different oxygen carriers and with the fuel reactor operating in different fluidization modes.

Scientific Environment

The SINTEF ER CLC Rig offers assessment of fuel conversion, oxygen carrier's attrition and other important characteristics of the CLC process through exhaust gas emission measurements and particle sampling during operation. Oxygen carrier particle samples can be analysed mechanically and chemically by another department at the campus. They can also contribute with some preparation of the oxygen carrier particles, especially on particle size classification.


EC DG Research - RFCS

selected publications

A. Bischi, Ø. Langørgen, O. Bolland (2013))
Powder Technology
246 0032-5910
Ø. Langørgen, I. Saanum, J. Bakken, O.H. Gardå, J.-X. Morin (4th June 2013)
Engineering approach for construction, process control and initial testing of a 150 kWth chemical looping combustion reactor system
The 7th Trondheim CCS Conference (TCCS-7).
Bischi A., Langørgen Ø., Saanum I., Bakken J., Seljeskog M., Bysveen M., Morin J.-X., Bolland O., (2011)
Design study of a 150kW double loop circulating fluidized bed reactor system for chemical looping combustion with focus on industrial applicability and pressurization
Int. J. Greenhouse Gas Control, Vol 5, No 3, pp. 467–474