JPS6091166A - Plate type absorber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Technical field This invention relates to an absorber used in an absorption heat pump, etc., and particularly relates to a plurality of absorbers that are attached to each other to form alternate cooling and absorption channels between them. This invention relates to a plate type absorber consisting of a plate.

Conventional technology A conventional plate type absorber is one in which a small hole is formed in the plate facing the absorption channel, and the absorbed gas is blown into the solution flowing inside the absorption channel through the small hole and absorbed by the solution. Are known. However, in this case, it is necessary to treat the absorbed surplus gas because it is ejected into the solution from a small hole, and also requires a high-pressure absorbed gas, which has the disadvantage of causing a large amount of energy loss.

OBJECT OF THE INVENTION The present invention aims to overcome the above-mentioned drawbacks of conventional absorbers of this type. That is, an object of the present invention is to provide a plate type absorber that does not require high absorption gas supply pressure and is therefore highly effective in saving energy.

20 Structure of the Invention In order to achieve the above object, the plate type absorber of the present invention is provided with a steam supply port (2) at the top, a solution discharge port (3) at the bottom, and a cooling water supply port. (4)
and a shell (1) with an outlet (5); a shell (
1), housed within Gaskent (13) (14,~1
The shells (
A first passage (A) that communicates with the internal space (C) of the shell (1) and is closed to the cooling water supply port (4) and the discharge port (5); ) is blocked, and the cooling water supply port (4) and discharge port (
5) forming alternating second passages (B) in communication with the second passageway (B);
a plurality of vertically extending plates (9); and nozzles arranged in multiple stages for injecting the solution from the upper and side openings (151 to 153) of the first passageway (A) toward the inside of the passageway; (16) Group;

By injecting the solution from the nozzle (16) into the passage (A), the droplets form a thin falling liquid film on the heat transfer surface of the spray (9), and at the same time vapor Supply port (2
) into the shell (1) through each passage (A)
The vapor and the solution come into contact with each other and an exothermic absorption effect occurs. This heat generation causes the cooling water flowing from the supply port (4) through the through hole (11) into the adjacent passage (B) to evaporate. The generated high-temperature water vapor, together with unevaporated cooling water, passes through the through hole (12) to the outlet (5).
leading to.

Water vapor is 1 ton of gas and liquid! ! (20) and the outlet (22).
) and the cooling water separated from the steam is recycled.

6 Effects of the Invention According to this invention, since the solution is in the form of a thin film, it has no hydraulic pressure, and therefore, the desired performance can be achieved by feeding the absorbed gas at a relatively low pressure. . Furthermore, since it is sufficient to supply the solution in the form of a thin film on the heat transfer surface and because a plate with a short heat transfer length is used, the pump power required for supplying the solution can be considerably small. Thus, this invention
It is possible to provide a plate type absorber with high energy saving effect.

EXAMPLES Hereinafter, examples of the present invention shown in the drawings will be described in detail.

First, referring to Fig. 1, the shell (1) has a cylindrical shape with an oval cross section extending in the horizontal direction, and is equipped with a steam supply port (2) at the top and a solution discharge port (3) at the bottom. ing. A cooling water supply port (4) and a discharge port (5) are provided on the end face (6) of the shell (1). The other end of the shell (1) is open as indicated by the reference numeral 7 and is closed by flanging the end plate (8) to the shell (1).

A plurality of plates (9) are clamped between the shell (1) and the end plate (8). As shown in Fig. 2, each plate (9) is approximately rectangular, has a heat transfer surface with a short heat transfer length (preferably 4 m or less), and has through holes ( 11) It has (12). plate(
9) extend vertically, and when the palms are placed together, all the through holes (11) and (12) are aligned, and the through holes (11)
communicates with the cooling water supply port (4), and the through hole (12) communicates with the cooling water discharge port (5).

When these plurality of plates (9) come into contact with each other via gaskets, alternating passages (A) and (B) are formed between the plates. To be more specific, the third
As can be clearly seen from the figure, the solution passage (A) is disconnected from the through holes (11) and (12) by the gaskets (141 to 143), which are partially cut out, while section, and the opening at the bottom (151
~154) with the interior space (C) of the shell (1). Cooling water passage CB) is play 1-(9)
The inner space (C) of the shell (1) is closed by a gasket (13) extending along the outer circumference of the shell (1), while the through holes (11) (12) and thus also the cooling water supply inlet (4) and the outlet (5).

Nozzle (16) for injecting solution into each passage (A)
The hesogoos (17) arranged in groups are respectively located at the upper opening (15,) and the side opening (152) of the passageway (A).
(15B) so that the nozzle (16) is facing. In the illustrated example, the nozzle group is provided in three stages, but it may be provided in two or four or more stages as necessary.

Referring again to FIG. 1, the cooling water supply port (4) and the discharge port (5) are connected to the gas-liquid separator (20) via pipes (18) and (19), respectively. A water supply nozzle (21) is attached to (18). (22) is a water vapor outlet.

Next, the operation of the plate type absorber constructed as described above will be described.

First, a concentrated solution is poured from the nozzle (16) into the openings (15, - 15,
3) into the passageway (A). A thin falling liquid film is thus formed by the droplets of the concentrated solution on the heat transfer surface of the plate (9) facing the passageway (A). Furthermore, in this passage (A), steam supplied from the steam supply port (2) into the shell (1) is supplied to the openings (15) at the top and both sides.
, ~153). As a result, the concentrated solution absorbs vapor and becomes a dilute solution, and an exothermic effect of absorption occurs. The dilute solution flows down along the heat transfer surface, falls through the lower opening (15,000) to the bottom of the shell (1), and then passes through the solution outlet (3).
is taken out of the vessel.

On the other hand, the cooling water supplied from the supply port (4) flows from the through hole (11) to each passage (B
) and goes to (12).

At this time, it is heated by the absorption heat generation effect in the adjacent passageway (A), and high-temperature steam is generated. The generated water vapor and unevaporated cooling water are discharged through the through hole (12) and the outlet (5).
), and the gas-liquid separator (20) via the pipe (19). Water vapor and cooling water are separated by the gas-liquid separator (20), and the water vapor is taken out from the outlet (22).

Cooling water is recirculated through line (18).

In addition, a certain amount of new cooling water is supplied from the water supply nozzle (21) to replenish the evaporated water, or independently thereof, and this promotes the circulation effect of the cooling water.

[Brief explanation of drawings]

The drawings show an embodiment of the plate type absorber of the present invention, in which Fig. 1 is a longitudinal cross-sectional view, Fig. 2 is a cross-sectional view taken along line nn in Fig. 1, and Fig. 3 is a cross-sectional view of the plate. FIG. 3 is an exploded perspective view showing a polymerization procedure and a fluid flow state. (1) - Shell, (2) - Steam supply port, (3) - Solution discharge port, (4") - Cooling water supply port, (5) - Cooling water discharge port, (9) - Plate, (11) (12) -・
Through hole, (13) (14, ~143) - Gasket, (151-15>---- One opening, (16) - Nozzle, (20), - Gas-liquid separator, (A) - Solution passage ,(
B) - Cooling water passage. ■ f's) bad second Ω

Claims (2)

[Claims] (1) A shell that is equipped with a steam supply port at the top, a solution discharge port at the bottom, and a cooling water supply and discharge port; housed within the shell, and connected to each other through a gasket, with the palms of the hands connected to each other. Inside the shell with openings at the top, sides and bottom! a plurality of vertically extending plates that alternately form a second passage communicating with the cooling water supply port and the cooling water outlet; and openings at the top and side of the first passage; A plate type absorber comprising: a group of nozzles arranged in multiple stages for simultaneously injecting a solution inward from imi. (2) The cooling water supply port and discharge port are gas-liquid II.
1. The plate type absorber according to claim 1, wherein the plate type absorber is connected to an i-tube so that cooling water is circulated therethrough.