Lab scale test facilities

Atmospheric drop tube furnace BTS-VR

Investigation of emission reduction measures, fouling and slagging behaviour of different fuels and characterisation of fuels by several other techniques

Overview of the 20 kWth atmospheric combustion reactor

The combustion reactor consists of an electrically heated ceramic tube (0.2 m in diameter and a length of 2.5 m). In this tube, a certain temperature profile can be embossed on a combustion reaction by a bulk heating chain. The maximum electrical input is 58 kW. The heating is subdivided into five zones (2 x 12 and 3 x 8 SiC - heating elements). The maximum possible temperature is about 1500°C. The fuel is dosed volumetrically by a balance allowing fuel mass flows between 1 and 5 kg/h. A reduction fuel (gaseous or solid) can be feeded by another dosage. The residence time in the reduction zone can be varied between 0.5 and 6 seconds. For analysis, taking of solid and flue gas samples is obtained by a vertically shifted and temperature regultated lance. This can be done at any desired residence time.

This plant enables the exploration of emission reduction measures, the fouling and slagging behaviour of different fuels as well as characterisation of fuels by several other techniques.

Scheme of the atmospheric drop tube furnace
Scheme of the atmospheric drop tube furnace

Configuration

Technical Data
Pressure: atmospherical
Temperature: 800 - 1500 °C
Fuel: pulverized coal
Fuel mass flow: 1-5 kg/h
Length of reaction tube: 2500 mm
Diameter of reaction tube: 200 mm
Volume flow: max. 23 Nm3/h
Residence time: 0.5 - 6 s

Investigations performed at BTS-VR

Configuration of the facility for the investigation of particle phenomena
Configuration of the facility for the investigation of particle phenomena
Configuration of the facility for the simulation of deposit formation
Configuration of the facility for the simulation of deposit formation
Configuration of the facility for the investigation of pollutant reduction measures
Configuration of the facility for the investigation of pollutant reduction measures

Contact

This picture showsJörg Maier
Dipl.-Ing.

Jörg Maier

Head of Department Firing Systems (KWF)

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