SU1373689A1 - Deaerator column - Google Patents

Description

(21) 4064288 / 24-06

(22) 04/29/86

(46) 02.15.88.BKSH. № 6

(71) Ural branch of the All-Union Thermotechnical Research Institute named after Dzerzhinsky

(72) A.D.Kondratyev and T.N. Yalovets

(53) 621.187.124 (088.8)

(56) USSR Author's Certificate No. 1058893, cl. C 02 F 1/20, 1982.

(54) DEAD AIR KOJIOHICA

(57) Invention m. It is used at thermal power plants and allows to increase the productivity of deazation through the intensification of the process of heat and mass transfer. A cover 7 with a side 8 adjoins a vertical partition 6, forming a gap with a jet plate (ST) 5. The overflow pipes 9 located in the ST between the side and the wall of the body have a height determined from the ratio l (0.98-1.2 ) (0.0045- -0.64B) m, where D is the diameter of the holes on the ST. The steam exhaust pipe I1 is embedded in the spillage sheet 10, and its upper edge is located under the lid above the water level on the ST. This embodiment provides a water layer on the CT, in which a vortex-resistant funnel is formed above each hole in the CT, the cone of which reaches the hole itself. In this case, not only deaerated water will flow from the space under a layer of water through the vortex funnel and the holes into the structure of the compartment, but also part of the steam that provides additional heating of the water and spraying it in the jet compartment. 1 il.

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The invention relates to a power system and industrial heat engineering, and can be used in particular at Teap electric plants for heating and deaeration of feed water.

The purpose of the invention is to improve the deaeration performance by intensifying the process of heat and mass transfer.

The drawing shows a de-aeration column.

The deaeration column contains a housing 1 with nozzles 2, 3 and 4, respectively, with a supply of deaerated water, steam and a vapor outlet, a jet tray 5 with a vertical partition 6 and an adjacent edge 7 with a flange 8. Between the side 8 and the housing 1 in the jet plate 5 has built-in drain pipes 9. The iodine jet plate 5 houses a bubbling sheet 10, in which a steam exhaust pipe 1 1 is embedded, the upper edge of which is placed under the lid above the water level on the plate 5.

The height of VODOSLIV1-Sh1X pipe 9 is selected from the condition h-r (0.98-ljU2) x X (0.0045 + 0, b4 and} m, where D (m) is the diameter of the holes in the jet plate.

The deaeration column operates as follows.

Water through the nozzle 2 is supplied to the jet plate 5, through its opening, Ti is drained onto the bubbling sheet 10 where it reaches the saturation temperature, is bubbled with steam and drains into the storage tank (not shown,

Greuntz steam entering the column through pipe 3 is fed under a bubbling sheet 10. After passing through a layer of liquid on sheet 10, steam enters the zone of mass condensation between the jet plate 5 and the bubbling sheet 10. Here the steam condenses onto the jet The water that is drained from the jet tray 5 is pre-heated with igub deaeration WATER. The uncondensed vapor and gases released during the deaeration process are discharged from the column through the nozzle 4.

Another part of the heating steam through the pipe 11 enters the space between the water layer on the plate 5 and the cover 7. The height of the overflow pipe 9 defined by the above expression provides

The plate 5 is such a layer of water, in which a vortex-resistant funnel is formed above each hole, the cone of which reaches the hole itself. In this case, from the space under the water layer through the vortex funnel and the holes in the plate 5 not only the deaerated water enters the jet compartment, but also part of the vapor.

Since steam is supplied to the underwater space above the plate 5 from under the bubble plate 10, the pressure of the steam carried by the jet flowing from the plate 5 to the jet section exceeds the pressure of the steam space in the latter. Due to this, the jet in the jet compartment is crushed by the steam carried by it into drops. At the same time, due to a significant increase in the contact surface of the phases, additional heating and water deaeration with steam entering the jet compartment through the bubbling sheet 10 occurs. Thus, the steam introduced into the water jets on the plate 5 through the vortex funnels, but also her in

jet compartment.

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Thus, by increasing the contact surface of the phases, the heat exchange process is intensified, noBbmja the efficiency of the deaerator and its performance.

Claims (1)

Invention Formula A deaeration column containing a jet plate installed in the housing, equipped with a vertical partition with a deaerated water supply pipe integrated in it, and a barbot aj sheet, which is different, is installed in the housing in order to improve production and heat exchange by intensifying heat and mass transfer. the lid adjoining the vertical partition with perpendicular to it the side forming the gap with the jet plate, drain pipes located in the jet plate between the b ortom and wall of the housing, and a steam pipe built into the bubble sheet, the upper edge of which is placed under the lid above the water level on the jet plate, while the height of the overflow pipes 313736894 determined from the ratio h D (M) - the diameter of the holes on the jet  (0.98-1.02) x (0.0045-U, 64D), at the empty plate.