| 摘要 |
PCT No. PCT/SE87/00140 Sec. 371 Date Aug. 31, 1988 Sec. 102(e) Date Aug. 31, 1988 PCT Filed Mar. 18, 1987 PCT Pub. No. WO87/05686 PCT Pub. Date Sep. 24, 1987.The present invention relates to a method for recovering heat and separating substances from a flue gas streaming through a heat exchange apparatus comprising a casing with heat exchange elements inserted thereinto, a medium being provided for absorbing heat from the flue gas. According to the invention the medium that shall absorb heat from the flue gas is conducted through the heat exchange elements, the heat exchange elements and the connections to the casing for flue gas being so placed that the flue gas streams perpendicularly to the heat exchange elements, the flue gas being given a flow velocity cross the heat exchange elements of not more than 3 m/sec. Soot in the flue gas is collected on the heat exchange elements and adsorbs and/or dissolves gaseous substances such as sulphur dioxide. The invention also relates to an apparatus for carrying out the method. |
