JPS6082183A - Flash evaporation type water making device - Google Patents

Abstract

PURPOSE:To prevent intrusion os splashes by providing a dash board to which the liquid drops generated in the stage of flash evaporation are bombarded to increase the grain size of the liquid drops and to separate the same from ascending steam flow in the middle part of the partition wall on the outlet side of a flash chamber. CONSTITUTION:The greater part of scattered splashes collide against the bottom surface of a tray 7 as shown by arrows and scatter toward a partition plate 6 between plates and therefore the greater part of the splashes can be captured by the construction in which the inlet end 10 of a dash board 9 is positioned upper than a horizontal axis 11. The angle alpha between the plate 9 and the wall 6 is made adequately >=100 deg. in order to allow the captured liquid drops to fall to the lower part of an evaporating chamber 2. The greater part of the splashes generated in the above-described way are separated by the plate 9 and therefore the load of ''Demister'' is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a technique for preventing spranone formation in an apparatus.

FIG. 1 shows a partial plan view of a conventional multi-stage flash evaporation type fresh water generator.

In Fig. 1, 1 is a box-shaped orifice.

2 is a flash chamber, 3 is a wire mesh demister, 4
is a condenser chamber, 5 is a heat exchanger tube, 6 is a partition wall, 7 is a tray,
8 indicates the bottom plate.

However, the brine introduced from orifice 1 is
After passing through the orifice 1, flash evaporation occurs in the flannel chamber for 2 people (indicated by dotted arrows), and the generated steam (indicated by dotted arrows) passes through the demister 3 and is cooled and condensed in the condenser chamber 4 by the cooling water flowing through the heat transfer tube 5. The fresh water is collected in a tray 7 and taken out to the outside.

However, in the above-mentioned conventional multi-stage Furanosee evaporative fresh water generator, the splash (dispersed mist) generated when the brine is ejected from the orifice 1 is entrained in the flash vapor flow, and after colliding with the tray 7, most of it is at the bottom of the evaporation chamber 2. Some of the brine falls into the flowing brine, but some of it further collides with the lower part of the interstage wall 6 and ruptures, becoming microparticles with a particle size larger than the limit and being entrained in the upward steam flow (see the thick lines in the figure). arrow), reaches the demister 3 and reduces the mist collection effect of the demister 3, and is further scattered from the demister 3 and reaches the condenser chamber 4, causing a decrease in the quality of the produced fresh water, etc. There was a drawback.

This phenomenon occurs especially at high evaporative loads and at low levels.

Or it became noticeable when the load was changed.

The present invention +zt, In order to eliminate all the problems of the conventional device described above, the lily pads that collided with the first-stage partition wall are captured by the collision plate, and the nocturnal particle size is increased, thereby promoting their sub-force drop. Therefore, it is proposed to prevent splatzoni from reaching the demister and entering the condenser chamber.

Two embodiments of the present invention will be explained below based on one embodiment shown in FIGS. 2 to 4.

In FIGS. 2 to 4, reference numeral 9 indicates a folded plate type collision plate which is an embodiment of the present invention, and the collision plate 9 is indicated by the same reference numerals as in FIG. 1 in FIGS. 2 to 4. Indicates that things have the same structure.

When the bottom plate is flat, as shown by the arrow in FIG. 1θ is a structure located above the horizontal N+11, and can collect most of the Sbrazo. Also,
The angle α formed between the collision plate 9 and the interstage wall is preferably 100 degrees in order to cause the collected droplets to fall by gravity to the lower part of the evaporation chamber. If α is 9 og or more, the collected droplets may re-fly due to the rising vapor flow.

In the above construction method, the majority of the scrubbing 7 that occurs is f:
Since it can be separated by 1 due to collision &9, the demister load can be lowered. Namely.

Compared to the conventional device structure, the demister thickness can be made thinner and the demister area smaller, which not only reduces demister material costs but also reduces long-term demister string maintenance costs (replacement costs due to corrosion). This contributes to significant cost reductions.

In addition, in this embodiment, the case where the collision plate is in the form of a folded plate has been explained.2 The present invention is of course not limited to this embodiment, and various designs may be made without departing from the spirit of the present invention. It is possible to make modifications.

For example, a wave-shaped notch may be provided at the tip of the nine-valent veneer to increase the particle size of the captured Sprasso gourd and promote the gravity fall 1ζ of the Suzuranoshi droplets.

Additionally, the impingement plate may be provided with a number of holes to facilitate the upward flow of the flood steam.

As explained in the examples, the present invention is...
- Flood of evaporative fresh water generation equipment - A collision plate is installed in the middle of the bulkhead on the exit side of the house, and most of the 2-furanone - sprano produced during evaporation is captured from the steam passing through the demister and sent downward. It also prevents people from entering the condenser chamber due to the gravity drop, and the quality of produced water can be greatly improved compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view of a conventional flood-evaporation type fresh water generator having a rectangular condenser chamber. FIG. 2 and FIG. 4 are sectional views explaining the present invention. FIG. 3 is a perspective view of the same. 1 Niorifice, 2: Evaporation chamber, 3: Demister. 4: Condenser chamber, 5: Heat exchanger tube, 6: Partition wall, 7: Tray, 8: Bottom plate, 9: Collision plate. Notebook 3 Figure 4

Claims (1)

[Claims] Flood of a flash evaporation type freshwater generator - Droplets generated during evaporation of flat crystals collide with the middle of the partition wall on the exit side of the house, coalesce the droplets, increase the particle size, and separate from the rising vapor flow. A flash evaporation type water generating device characterized by being provided with a removing working plate.