Bluslot customized wedge wire screen filter element specially used in utility boiler.
A circulating pump is added in the steam water system of once through boiler to combine the once through boiler with auxiliary circulation. There are many layout schemes for steam water system of compound circulation boiler. Fig. 3 is a schematic diagram of a typical supercritical pressure composite cycle. Under high load, the circulating pump is used as booster pump, and the system operates in the mode of once through boiler. When recirculation is put into operation below a certain load, the flow through the water wall is the sum of feedwater flow and recirculation flow. The characteristic of this system is to reduce the difference of flow velocity in the water wall at high and low load, which is conducive to low load operation, and the flow resistance at high load is not too large.