Device for preventing separator level flue deposition

The utility model provides a device for preventing separator level flue deposition, including the circulating fluidized bed boiler, export at the circulating fluidized bed boiler is connected with corresponding separator respectively through the horizontal gas pass more than two side by side, set up the first grey nozzle that blows in every horizontal gas pass bottom, it blows grey nozzle to set up the second at every horizontal gas pass lateral part, first grey nozzle and the second of blowing blows grey nozzle respectively through first lateral conduit, the second lateral conduit with blow grey air supply and connect, it comes from and uses mixedly compressed air or low pressure steam to blow grey air supply, blow grey nozzle and the second blows grey nozzle through first, sweep in succession the deposition, it can be carried the entering separator by the flue gas to sweep the levitate ash grain in back, thereby prevent the emergence of the deposition condition, guarantee the normal operating of separator, the utility model provides high boiler efficiency, reduce energy consumption alleviates environmental pollution.