Cyclone type dedusting coal economizer

The invention discloses a cyclone type dedusting coal economizer and relates coal saving and dust collectors. Through the investment for the coal economizer, the effects of the three different functions of coal saving, particle removal and sulphur removal are generated, and energy conservation and emission reduction are achieved. According to the scheme, the cyclone type dedusting coal economizeris divided into an upper section and a lower section; a heat supply water return cock (6) is arranged on the lower portion outside a shell of an upper section preheating chamber (5); an air inlet cock(4) and a water outlet cock (10) are arranged on the upper portion; a spiral type channel (11) is formed in the shell; a tail gas discharge channel (3) which is also a sulphur removal chamber is formed in the center; a vertical short connector (2) is arranged at the top end of the tail gas discharge channel; a short connector (1) further penetrates through the vertical short connector horizontally; the horizontal short co