|In the deaerator, the condensed water and feed water enter to the water chamber which consists of two separators and jet pipe. Water will rapidly rotate into rotating-film water skirt after accessing the small holes of the jet pipe. Therefore three layers of drain gates are installed on the lower part of the pipe to disperse the flowing water. Moreover, a one-time heating steam pipe is installed on the lower drain gate, so that the steam will heat the water film through entering the water drain gate layer and rotating-film water skirt from the lower to upper part for the primary deoxidization. |
A feeding layer is installed on the lower part of the one-time heating steam pipe for the water to flow. The secondary heating steam pipe is set on lower feeding layer or water tank for the steam to access to the feeding layer, with the purpose of have an in-depth deoxidization of the water. The feeds are characterized by good heat transferring performance, and can fall to the water tank through the pipe.
Three major advantages of rotating-film deaerator:
1) Large heat transfer coefficients and good deoxidization effects, and water temperature on the inlet and outlet of the rotating-film pipe can reach as high as 90⪚ C
2) Good adaptability, since it can operate stably under 30%-120% loads and the oxygen contents of the discharged water can reach the standard: high pressure: &e;7&icro; g/l
3) Low displacement. In addition, since the components are welded, they can always operate reliably and require little service
To this end, since successfully developed at the beginning of 1980s, the product has been widely used in power and petrochemical industries, especially in thermal plant with large water feeding volume and low temperature for water feeding as well as in peak-load regulation power plant
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