| 摘要 |
<p>Heat exchanger, consisting of a reservoir, having upwardly directed tubes that are flowed through by a liquid to be heated and by fluidized bed particles for cleaning the tubes internally. Connected to the reservoir is an external downcomer (2) for receiving fluidized bed particles coming from the top box (21) of the reservoir and to be conveyed again to the bottom box (25) of the reservoir. Provided in the downcomer (2) is an inner tube (1) of smaller diameter, which is open at its bottom end (5) and provided, directly below the closed top end (9), with openings (8) for effecting a circulation flow in the downcomer (2).</p> |
