초록 ▼

The disclosed apparatus is disposed in the “U”-section deflector at the bottom end of flues connected to each other in a multiple-flue, vertical flue furnace. A deflecting plate and two associated projections, one on the plate and the other on the wall, influence the flow of gases in such a manner t

The disclosed apparatus is disposed in the “U”-section deflector at the bottom end of flues connected to each other in a multiple-flue, vertical flue furnace. A deflecting plate and two associated projections, one on the plate and the other on the wall, influence the flow of gases in such a manner that first the radius of curvature of the gas making the turn is decreased, and second the distribution of flow at the input cross-section of the flow-receiving flue is more uniform. The first effect improves the effectiveness of fly ash removal from the turning gas stream. The second effect prevents localized sooting and uneven heating of a heat exchanger which may be installed in the end of the receiving flue.

대표청구항 ▼

An apparatus for separating fly ash particles from a flue gas flow in combustion furnaces with a multiple flue boiler, comprising: a first vertical flue; a second vertical flue; a lower deflector section interconnecting said first and said second flues and adapted to conduct a flue gas flow from sai

An apparatus for separating fly ash particles from a flue gas flow in combustion furnaces with a multiple flue boiler, comprising: a first vertical flue; a second vertical flue; a lower deflector section interconnecting said first and said second flues and adapted to conduct a flue gas flow from said first flue into said second flue; a deflecting plate disposed in said deflector section having an incident surface in a confronting relationship with said flue gas flow, said deflecting plate being adapted to divide said flue gas flow into an inner first flow and an outer second flow to direct said inner first flow toward said second flue, and to produce radial centrifugal forces in said inner first flow sufficient to separate fly ash particles therefrom; a first projection provided on said incident surface of said deflecting plate and adapted to modify passage of said inner first flow into said second flue; a wall defining a boundary of said lower deflector section adjacent said second vertical flue and disposed in a spaced relationship to said deflecting plate and in a confronting relationship with said outer second flow, said wall being adapted to confine and direct said outer second flow toward said second flue and to produce radial centrifugal forces in said outer second flow sufficient to separate fly ash particles therefrom; a second projection provided on said wall adapted to modify passage of said outer second flow into said second flue; and hopper means in communication with said lower deflector section for receiving from said lower deflector section fly ash particles deposited therein by said outer second flow and said inner first flow; said first projection, said deflecting plate, said lower deflector boundary wall and said second projection being operable in combination to produce in said second flue a flow of flue gases having a substantially uniform cross-sectional velocity distribution and having a substantially uniform cross-sectional distribution of fly ash particles.