Environment-friendly intermittent blowdown flash tank

Abstract

The invention discloses an environment-friendly intermittent blowdown flash tank. The environment-friendly intermittent blowdown flash tank comprises an outer shell (1), a guiding cylinder (2) and anemptying cylinder (3) which sequentially sleeve from outside to inside, wherein the upper end of the emptying cylinder (3) is located outside the outer shell (1), the lower end of the emptying cylinder (3) is located in the upper end of the guiding cylinder (2), the guiding cylinder (2) is located in the outer shell (1), a discharged sewage inlet (4) is formed in the side wall of the outer shell (1), a discharged sewage outlet (5) is formed in the lower portion of the outer shell (1), and a baffle plate (6) is arranged between the outer shell (1) and the guiding cylinder (2) and is located above the discharged sewage inlet (4). The environment-friendly intermittent blowdown flash tank is provided with the baffle plate, utilizes the baffle plate to increase the contact area with water steam, makes liquid drops attached to the surface of the baffle plate to form large liquid drops, utilizes surface tension of water and the gravity action of the large liquid drops to overcome the drag force of discharged steam and decreases emptied liquid water.

Description

technical field [0001] The invention relates to an environment-friendly regular sewage discharge and expansion container. Background technique [0002] The regular blowdown and expansion vessel is an important equipment of the steam boiler system, referred to as "scheduled discharge". In the steam boiler system, the low points of the steam drums, headers, continuous sewage expansion containers, deaerators and other equipment that are easy to accumulate pollutants need to discharge pollutants to the outside of the system according to certain rules. This discharge is in the form of drainage, through Drainage takes away the dirt and realizes sewage discharge. Scheduler is a device that receives these drainages and treats them uniformly. The quality and quantity of the pollutants contained in these drainages are different, the pressure, temperature and flow of these drainages are also different, and the time of entering the scheduled drainage is also uncertain. Therefore, it ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of unfavorable recovery of water vapor in the existing fixed discharge device, the present invention provides an environment-friendly periodic sewage discharge expansion vessel, in which a baffle plate is set, and the baffle plate is used to increase the volume of water vapor in the expansion vessel. Larger contact area, so that the droplets adhere to the surface of the baffle to form large droplets, use the surface tension of water and the gravity of large water droplets to overcome the drag force of exhaust steam, and reduce the emptying of liquid water

Images