JPS59225270A - Material movement heat exchanging device - 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]

This departure F! Arz, relates to a mass transfer heat exchange device that flows a solution for mass exchange around the outer circumference of a heat transfer tube, causes the solution to absorb steam to generate heat, and transfers this heat to the fluid flowing through the heat transfer tube.〇 Conventional As an example of this kind of equipment, there was one shown in the first cause.In the figure, (1) is the casing, +21 is the casing [11 circles are horizontally arranged heat exchanger tubes, 1ul
1 is a spraying toy that collects a concentrated solution (101) to be used for material exchange; 41 is a spraying port provided at the bottom of the spraying toy (3);
(5) is a dilute solution outlet pipe to take out the dilute solution συ after substance exchange, (61 is a concentrated solution inlet pipe to be introduced into the concentrated solution FIOI distribution toy (3), and (7) is a steam concave inside the housing 11+. The steam introduction pipe (8) is a pump, and (91 is a dilute solution take-out pipe.) Next, the operation will be explained. Spraying toy at +101 (pools at 31, installed at the bottom of the spraying toy Ill, heat transfer pipe from spraying port +41

[Scattered on 2J. The sprayed concentrated solution uO1 absorbs the steam 0 introduced through the steam groove tube (7) while flowing down the outer periphery of the heat transfer tube +21, and becomes a dilute solution port with heat generation. This steam is a concentrated solution
(The heat generated when absorbed by the heat exchanger tube (2)
1 to the fluid in the tube. On the other hand, the melt ffQ11 that has absorbed the steam port is taken out of the apparatus from the dilute solution outlet pipe (6) by the pump (81) through the dilute solution outlet pipe (91). If the heat exchanger tubes (21) are arranged horizontally and are long in the axial direction, it is difficult to uniformly wet the outer periphery of the heat exchanger tubes (21) with the concentrated solution 1101 sprayed from the spray port [41]. Ruri,
Especially in the lower heat exchanger tube +2). There is a noticeable tendency towards jin. In addition, if the heat transfer tube (2) is placed horizontally in the above F, a large number of spray ports (14) will be required, and the concentrated liquid (
Uniform distribution of lO) becomes difficult. In addition, the housing (1"
If the heat exchanger tube (2) is installed at an angle, the concentrated solution ff+101 will not be uniformly sprayed on the outer peripheral surface of the heat transfer tube (2), as shown in Figure 2. '@M''gtto+, more concentrated solution 1101 was sprayed from the spray port +41, and it was rare for the concentrated solution (lO) to run out.As described above, conventional mass transfer heat exchange equipment However, this invention had the disadvantage that the mass transfer characteristics deteriorated due to the lack of effective use of the heat transfer surface. A casing that houses heat exchanger tubes,
A partition plate through which the heat transfer tube penetrates through a gap to divide the housing into an upper chamber and a lower chamber, a concentrated solution introduction tube for introducing the concentrated solution before mass exchange into the upper chamber, and a dilute solution for introducing the dilute solution after mass exchange. A pump that draws out the solution from the lower chamber and introduces a part of it into the upper chamber, communicates with the upper chamber and the lower chamber, and mixes the dilute solution and concentrated solution that are surplus in the upper chamber. It is equipped with a return pipe for sending the steam to the lower chamber and a steam introduction pipe for introducing steam into the lower chamber. By causing the intermediate concentration solution in the upper chamber to flow down from the gap between the partition plate and the heat transfer tube along the heat transfer tube, absorbing steam as it flows down to generate heat, and transmitting the heat to the fluid in the heat transfer tube, The purpose is to provide a mass transfer heat exchange device with good mass transfer characteristics. An embodiment of the present invention will be described below with reference to the drawings. Third
In the figure, a heat exchanger tube stands at +21rc, a partition plate is shown at c13 that divides the facepiece 111 into the upper chamber (1a) and the lower ffl (lb), and a4 is a part of the diluted molten go after substance conversion into the upper chamber (lb).
A9 is a dilute solution introduction pipe to be introduced into a), a9 is a return pipe that sends an intermediate concentration solution aυ, which is a mixture of the dilute solution port and concentrated solution +I01 that are surplus in the upper chamber (1a), to the lower chamber (lb), and αη is a return pipe This is the gap between the heat exchanger tube (2) and the partition plate 03, and in this case, it is provided around the entire circumference of the heat exchanger tube (2)@Also, the arrow indicates the direction in which the fluid flows@Next, the operation will be explained. do. The concentrated solution introduced through the concentrated solution inlet pipe (6) (101) is collected in the upper chamber (la) and collected on the partition 3. The upper chamber (la) is filled with a pump (8). The dilute solution Qυ introduced through the entire dilute solution inlet pipe port also accumulates, and an intermediate concentration solution uG containing a mixture of concentrated V solution IQI and dilute solution αυ is formed in the upper chamber (1a).Intermediate A degree solution The steam flows down from the gap a between the partition plate 0 and the heat exchanger tube +21 to the outer circumferential surface of the heat exchanger tube +21, and the steam inlet tube (7)
It absorbs the steam that flows further down, generates heat, and becomes a dilute solution o1J. The heat generated while the steam uz is absorbed is transferred to the heat transfer tube (
21 to the fluid in the tube. -10,000, steam qz
The absorbed solution 'g (111) is distributed, for example, in a one-to-one ratio between the dilute solution take-out pipe (91) and the dilute solution inlet pipes U and V via the dilute solution outlet pipe (5) and the pump (8). Upper chamber (la)
The surplus intermediate concentration solution returns to the lower chamber (lb) through the recirculating tube 4. In the mass transfer heat exchange device configured as above, the amount of the solution that is used for mass exchange is equal to the falling amount of the solution. For example, half of the falling amount is returned to the pump (8) through the dilute solution introduction pipe α41, so there is less worry about the liquid running out. Lower fit (lb)
can be returned to. Furthermore, since the heat exchanger tube (21) is formed vertically, the flowing liquid flows uniformly on the outer Fr+ surface of the heat exchanger tube (21).
Since more efficient substance transfer is carried out in the heat exchanger, the performance is improved and the fruiting apparatus can be made smaller. In addition, even if the housing (1) is slightly tilted, the upright heat exchanger tubes (2
Since this is a system in which the intermediate concentration solution a flows down around the outer periphery of the heat exchanger tube (21), the influence is small and the heat exchanger tube (21) does not occur in the conventional equipment. Heat exchanger tubes (not limited to 210"m class), but as shown in FIG. If formed by cutting and raising the fins, the falling liquid will be more likely to uniformly wet the outer circumferential surface of the heat transfer tube (phantom) due to the increase in heat transfer area and the effect of the fin scream, promoting mass transfer. (to) becomes the flow path resistance, so the velocity of the flowing liquid decreases, the mass transfer time becomes longer, and the vapor is better absorbed.@Also, even if the casing is tilted, the liquid retention force by the fins Q81 It goes without saying that the outer circumferential surface of the heat transfer tube is uniformly wetted, and the characteristics are the same as in the vertical case.As described above, according to the present invention, a casing for storing an upright heat transfer tube, and the above-mentioned heat transfer tube are provided. A partition plate that penetrates through a gap and divides the housing into an upper chamber and a lower chamber, a concentrated solution introduction pipe that introduces the concentrated solution before substance exchange into the above 1-hole, and a dilute solution g after substance exchange.
, t- A pump that draws out the solution from the lower chamber and introduces a part of it into the upper chamber, communicates with the upper chamber and the royal chamber, and surplus dilute solution in the upper chamber! It is equipped with a return pipe that sends the intermediate concentration solution mixed with the liquid to the chamber, a steam introduction pipe that introduces steam to the lower chamber, and a partition plate and a heat transfer tube to transport the intermediate concentration solution in the upper chamber. The solution is made to flow down along the heat transfer tube from the gap between the solution and the solution, and as it flows down, it absorbs all of the vapor and generates heat, and that heat is transferred to the fluid in the heat transfer tube, so that an amount commensurate with the flow rate of the solution is returned. Therefore, there is less worry about the above-mentioned flowing liquid running out.
Moreover, the surplus liquid can be returned to the lower chamber through the return pipe. Furthermore, since the heat exchanger tube was placed upright, the flowing liquid force as mentioned above! The uniform flow on the outer circumferential surface of the heat transfer tube improves the mass transfer characteristics and improves the effectiveness of the mass transfer heat exchange device.

[Brief explanation of the drawing]

Fig. 1 is a bottom diagram showing an example of a conventional mass transfer heat exchange device, and Fig. 2 shows a structure of the device shown in Fig. 1 with a 7'C
Figure 3 shows the state of the heat exchanger tubes and flowing liquid in the case of a mass transfer heat exchanger according to an embodiment of the present invention.
Figure 4 shows another embodiment of the heat exchanger tube part in the apparatus shown in Figure 3 on an enlarged scale! In the diagram, 11+ is the casing, (la) is the upper chamber, (1b)
lower chamber, (23 a heat exchanger tube, (61 a concentrated solution introduction tube, (7
) is steam introduction pipe, 18+ rc pump, +101 rc
concentrated solution, ants, dilute solution, az to, m fl
, (131la specification-eiy a,, 'as r11 return tube, 00guyo intermediate concentration solution, (17) water gap. Note that the same symbols in the figure indicate the same parts corresponding to fcμ.
To be. Agent Masuo Oiwa Figure 1 Figure 2 Figure 3 Figure 4 Procedural amendment (voluntary) Commissioner of the Japan Patent Office 2 Name of the invention Mass transfer heat exchange device 3 Relationship with the case of the person making the amendment 1 Patent application Representative Hitoshi Katayama, Department 4, Agent 5, Column 6 for detailed explanation of the invention in the specification subject to amendment, contents of the amendment.

Claims (1)

[Claims] (11) A casing for housing an upright heat transfer tube, a partition plate through which the heat transfer tube passes through a gap and divides the casing into an upper chamber and a lower chamber, a concentrated solution before mass exchange. A concentrated solution inlet pipe for introducing the dilute solution into the upper chamber, a pump for leading out the dilute solution after substance exchange from the lower chamber and introducing a part of it into the upper chamber, and a pump for introducing the dilute solution into the upper chamber and the lower chamber, A return pipe is provided to send an intermediate concentration solution, which is a mixture of a dilute solution and a concentrated solution left in the chamber, to the royal chamber, and a steam introduction pipe is provided to introduce steam into the lower chamber, and the intermediate concentration solution in the upper chamber is separated from the above partition. A mass transfer heat exchange device that allows steam to flow down from the gap between a plate and a heat transfer tube along the heat transfer tube, absorbs steam as it flows down, generates heat, and transfers the heat to the fluid in the heat transfer tube. (Compatible with 21. A plurality of needle-like holes are formed in the outer circumferential direction of the heat exchanger tube.
The mass transfer heat exchange device according to claim 1, wherein the toothed fins are fixed to the fins t with the entire surface inclined upwardly.