Dust removal and white smoke elimination box for flue gas dust removal and waste heat recovery system

The utility model provides a dedusting white elimination box for a flue gas dedusting waste heat recovery system, which comprises a demisting plate, a first annular guide pipe and a fourth annular guide pipe, the demisting plate is arranged on the upper side in the dedusting box, the first annular guide pipe is arranged above the demisting plate, and a second annular guide pipe is arranged on the inner side of the first annular guide pipe. A second annular guide pipe is arranged on the inner side of the first annular guide pipe, a third annular guide pipe is arranged on the inner side of the second annular guide pipe, and a fourth annular guide pipe is arranged on the inner side of the third annular guide pipe. Then the first annular guide pipe, the second annular guide pipe, the third annular guide pipe and the fourth annular guide pipe which are heated by the waste heat are used for heating and further dehumidifying the flue gas which is dehumidified by the demisting plate, so that the situation that the di