Method and device for cleaning exhaust gases by way of fluidized bed reactors
AssigneeFujiang Lonjing Environment Technology Co., Ltd.
InventorHarald Sauer
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Abstract
The invention relates to a method for cleaning exhaust gases, in which an exhaust gas and a sorbent are combined in a fluidized bed reactor. In a subsequent filter system, solid matter is segregated, and thereafter, up to 99 per cent of the sorbent is re-channeled into the fluidized bed reactor, wherein the gas is subjected to a rotation around the flow axis in the fluidized bed reactor.
Claims10
Method for cleaning exhaust gases comprising combining an exhaust gas and a sorbent in a fluidized bed reactor, segregating solid matter in a subsequent filter system and then re-channeling up to 99% of the sorbent into the fluidized bed reactor,
- wherein the fluidized bed reactor comprises an expanded circulating fluidized bed and that the gas is subjected to a rotation about the flow axis in the fluidized bed reactor,
- wherein the rotational movement of the gas is achieved by installations in at least one nozzle, which is located in the gas and sorbent injection region of the fluidized bed reactor and the at least one nozzle comprises single or multiple nozzles and the installations in the single or multiple nozzles comprise guide vanes, and
- adjusting a gas speed relative to the empty reactor of 2 m/s to 10 m/s and/or a mean solid residence time of 15 min to 200 min by external solids recirculation and/or a mean solid loading of 1 kg/m3 to 10 kg/m3 in the fluidized bed reactor.
Apparatus for carrying out a method for cleaning exhaust gases in a fluidized bed reactor, comprising a fluidized bed reactor that includes an expanded circulating fluidized bed and wherein a gas and sorbent injection region of the fluidized bed reactor is equipped such that the raw gas can be brought into a rotational movement about the flow axis in the fluidized bed reactor, wherein in order to produce the rotational movement in the gas and sorbent injection region of the fluidized bed reactor, at least one nozzle is provided with installations and the nozzles comprise single or multiple nozzles and the installations in the single or multiple nozzles comprise guide vanes, and
- wherein a gas speed relative to the empty reactor of 2 m/s 10 m/s and/or a mean solid residence time of 15 min to 200 min by external recirculation and/or a mean solid loading of 1 kg/m3 to 10 kg/m3 is adjusted in the fluidized bed reactor.
Dependencies are inferred from the claim text.