Further investigations of low-temperature circulating fluidised bed gasifier

The intended use of the LT-CFB gasifier includes a number of industrial as well as power plant applications. As an example the sufficiently clean combustible gas produced by the LT-CFB gasifier, can be added to the combustion chamber of existing boilers. The aim of the EFP-2000 project reported is primarily to conduct a supplementary experimental and theoretical evaluation of the LT-CFB gasifier. This in continuation of the initial experiences achieved through the few initial tests that followed the constructing of the 50 kW LT-CFB plant at the Technical University of Denmark in 1999. The experimental work reported has primarily comprised 12 gasification tests within a 3 month period around the new year 2000 - 2001. 11 of the tests were conducted on Danish wheat straw having a very high content of K and Cl, whilst a single test was on wood. These tests and the related data evaluation work have contributed considerably to optimizing and documenting the performance of the LT-CFB gasifier. The results achieved constitutes a basis for an on-going PSO-2001 -project, which is directed at realizing a more realistically dimensioned and constructed 500 kW LT-CFB test plant