Steam-water mixed heating and self-stirring method

Abstract

The invention discloses a steam-water mixed heating and self-stirring method. According to the steam-water mixed heating and self-stirring method, a steam connecting pipe, a main steam pipe, branch steam pipes, steam nozzles with connecting pipes, hyperbola diversion covers and steam pipe supports are arranged, wherein the steam connecting pipe is connected with the main steam pipe; the main steam pipe is connected with the branch steam pipes; the branch steam pipes are connected with the steam nozzles with the connecting pipe; the hyperbola diversion covers are arranged at equal intervals and internally comprise the steam nozzles with the connecting pipes; the steam pipe supports are used for fixing the steam pipes into main equipment; the hyperbola diversion covers are cover bodies of hyperbola types, spaces are reserved between the lower parts of the hyperbola diversion covers and the bottom of a tank. By the method, the steam trend and the phase change process are that steam enters the main steam pipe from the steam connecting pipe, then is distributed into the branch steam pipes, and is sprayed out from double-layer staggered space angle holes in the steam nozzles with the connecting pipes; in the hyperbola interval formed by the hyperbola diversion covers, steam and preheated cold water exchange heat fully and rapidly outward from the nozzles according to the temperature gradient and form heat flow mixed solute from bottom to top. The steam-water mixed heating and self-stirring method has the characteristics of rapid heat exchange, short time, low noise volume, low vibration, uniform heating, saving of solute using amount, stable and homogeneous Ph value and balanced water temperature.

Description

technical field [0001] The invention relates to a steam-water mixing heating self-stirring method, which is particularly suitable for heating the alkali aqueous solution of the alkali liquor flushing water tank of the thermal power plant. Background technique [0002] Air preheaters, economizers, flue gas waste heat recovery heaters and other devices in thermal power plants work by using sulfur-containing flue gas as a heating medium to heat water or cold air. The temperature difference is large, and the highest point can reach 300 ° C. And the temperature is distributed in a ladder shape. In actual operation, due to many conditions, there are different degrees of scaling on the heat transfer medium near the flue gas side. The scale is mainly composed of calcium sulfide; its removal is often brewed with hot alkaline aqueous solution , then rinse with water. In order to achieve the effect, the temperature of the cleaning water should be between 70°C and 80°C, and the pH valu...

AI Technical Summary

Problems solved by technology

Such an extensive method often results in uneven heating, loud noise when mixing steam and water during heating, and strong water flow vibration, so that caustic soda cannot be fully dissolved and mixed, the dosage is increased, and the pH value is unstable; these defects greatly affect the cleaning effect and efficiency, and may even lead to major accidents such as cleaning is not as good as not cleaning

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