| 摘要 |
A tower type reactor has two treatment stages through which a stream of granular bulk material passes downwardly to cool an upwardly flowing flue gas to the dew point temperature of the gas. In addition, a treatment agent is contacted with the flue gas so that pollutants such as sulfur dioxide are combined with the agent, for example, with an alkali or alkaline earth compound. The second stage of the reactor permits a flow of air to pass over the bulk material to cool the material and obtain waste heat which can be used for other purposes.
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