Atmospheric fluidized beds use limestone or dolomite to capture sulfur released by the combustion of coal. Jets of air suspend the mixture of sorbent and burning coal during combustion, converting the mixture into a suspension of red-hot particles that flow like a fluid. These boilers operate at atmospheric pressure. For more details download the Autocad drawing file with detailed dimensions and specifications of this file. This can be used by architects and engineers. Download this 2d AutoCAD drawing file.