Horizontally-arranged periodic blow-down flash tank

Abstract

The invention discloses a horizontally-arranged periodic blow-down flash tank which cannot cause washout to a shell body easily. The horizontally-arranged periodic blow-down flash tank is provided with a shell body, the top of the shell body is provided with a sewage inlet pipe, the opening in the top of the sewage inlet pipe is a boiler periodic blow-down inlet, a spraying energy dissipater is installed in the inner cavity of the shell body, an opening in the bottom of the sewage inlet pipe is communicated with an inlet of the spraying energy dissipater, and a secondary steam discharge outlet is formed in the top of the shell body. The spraying energy dissipater is provided with a spraying pipe, the opening in the bottom of the sewage inlet pipe is communicated with an opening in the top of the spraying pipe, and a plurality of spraying holes which are arrayed evenly are formed in the bottom of the spraying pipe. A steam-water separating device is installed on the upper portion of the inner cavity of the shell body, and the steam-water separating device is installed on the bottom of the secondary steam discharge outlet and is communicated with the secondary steam discharge outlet. High-temperature high-pressure boiler blow-down water enters the spraying energy dissipater through the sewage inlet pipe, the flow direction of sewage is changed through the spraying energy dissipater, direct washout of the high-temperature high-pressure boiler blow-down water to the shell body of equipment is avoided, and the service life of the equipment is prolonged.

Description

technical field [0001] The invention relates to a horizontal periodic blowdown expansion vessel. Background technique [0002] The horizontal periodic blowdown expansion vessel is mainly a device for expanding the volume and reducing the pressure, cooling down and separating the secondary steam of the periodic blowdown of the boiler. [0003] The boiler blowdown water has the same working pressure as the boiler and the saturated water temperature under the pressure (high temperature and high pressure). It is necessary to use a regular blowdown expansion vessel to expand the boiler blowdown water, reduce the temperature, and separate the secondary steam and waste hot water. The secondary steam and waste hot water are used as heat sources to recover part of the heat lost by boiler blowdown and improve boiler efficiency. Conventional boiler sewage is regularly discharged into the sewage expansion vessel, and part of the sewage is immediately vaporized into secondary steam. Th...

AI Technical Summary

Problems solved by technology

Conventional boiler sewage is regularly discharged into the sewage expansion vessel, and part of the sewage is immediately vaporized into secondary steam. The discharge of the water level regulating valve is easy to cause erosion to the equipment shell

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