The stirred bed of stepping solid such as oil shale is handled -- the different particle sizes in the adverse current flowed from upward such as strip gas

摘要

The apparatus has a feed-water preheating zone and a steam-generating zone and is intended to avoid impermissible stresses by comparatively simple means. This is achieved by the gas-carrying heat-exchanger tubes (5) being fastened in two fixed heads (3, 4) and surrounded in the region of the feed-water preheating zone (VZ) by a jacket (10) at a distance from the inside of the vessel wall (11), the supplying of the boiler feed water taking place into the inner space formed by the jacket. For this, the single drawing is to be published. IMAGE