JPS60179185A - Device for recovering gaseous carbon dioxide - Google Patents

Abstract

PURPOSE:To use recovered gaseous carbon dioxide for converting distilled water into potable water by connecting an extracting pipeline to each condenser on the high-temp. side, and providing a condenser for condensing steam and an extracting device to a confluent pipe which is communicated with each extracting pipeline. CONSTITUTION:The steam and other gaseous components which are evaporated in the first evaporator 4 pass through a demister 2 wherein water droplets are separated, and then arrive at a condenser 3 wherein the steam are cooled and condensed by seawater flowing in the condenser 3. The condensed water is stored in a receiver. Meanwhile, since the gaseous components such as nitrogen, oxygen, and gaseous carbon dioxide are not condensable, the components are extracted by an extracting pipeline 5 as the gas. The seawater which is partially evaporated and removed from a condensable part of a dissolved air component is sent into a flush box 1 of the evaporator 4 at the succeeding stage wherein evaporation, discharge of other gaseous components, condensation of steam, and the extraction of noncondensable gases are carried out in the same way as above-mentioned.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Utilization of Yjl] The present invention relates to a carbon dioxide recovery device for recovering carbon dioxide scum generated from a seawater desalination device.

[Prior art]

There are various methods for producing fresh water from seawater, such as evaporation and membrane filtration.
A f+j water freshwater flZ apparatus is used. namely, a flash box (a), a demister (b) and a condenser (C
) equipped with an evaporator (rll) connected in multiple stages, liη water is sent into the condenser (C) of the evaporator (d) on the downstream side by a pump (g) driven by a steam turbine, etc., and 11+α
After passing through the condenser (c) of the evaporator (d) on the previous stage side, it is heated in the main heater (c), and then sent to the Franche box (a) of the evaporator H (d) on the previous stage side. When heated seawater is exposed to negative pressure and evaporated, the evaporated water vapor passes through a demister (b), water droplets are removed, and passes through the condenser (c) in the condenser (c). 11 71σ The water vapor is cooled by water and condensed, and the receiving part (1)
Distilled water collects in.

The heated 71σ water that has passed through the first stage evaporator (d) is transferred to the next stage evaporator (d) and evaporated in the flash box (a), producing distilled water in the same process as described in NIJ. Receiving part Cf) G accumulation, Il[α Each evaporator (d
) similarly produces distilled water.

Furthermore, non-condensable scum, for example '1, is added to the condenser (c) of each stage.
15 Nitrogen, oxygen, which are components of air dissolved in water,
A bleed pipe (h,) for discharging carbon dioxide gas etc. into the atmosphere is connected, and the degree of negative pressure inside each evaporator (d) is increased to improve the evaporation rate, and water vapor is guided to the condenser (c). In this way, condensation efficiency is increased.

・Second, 1: The distilled water produced in this way is passed through a distilled water pipe (?
), [extracted by ribbon etc., drinking water, industrial 1't
J book, 7111-1'7 Ill used for water, etc.

However, in order to use the steamed water obtained by the desalination equipment for drinking purposes, there is a method to increase the hardness of the water, and one way to do this is to use conventional distilled water G.
Dissolve this carbonate scum, and then add calcium carbonate or calcium hydroxide.
：Have you been able to find the Jj method of forcing it? Second, you have to have a carbon dioxide scum ax production device (ri:j), and the equipment cost and cost are high. Become(
Ha/2.

[Purpose of the invention]

The purpose of the invention is to self-sufficiency in carbon dioxide gas used in producing distilled drinking water using an evaporative water desalination/bottle water conversion device. .

[Invention (1G configuration)] The present invention provides a system in which a bleed pipe is connected to each condensate of the high temperature stages 11+11 of an evaporative seawater desalination apparatus, and a merging pipe is connected to each of the bleed pipes. By installing a water vapor condenser and an oil/gas device, the non-condensable gas of the carbonate sludge generated in the high-temperature stage 1!1j of the evaporative seawater desalination equipment is recovered in a dry state, 0 so that the carbonate residue contained in the distilled water can be used to convert distilled water into drinking water.
This is related to a carbon dioxide recovery device that uses carbon dioxide gas generation equipment, etc.

〔Example〕

Hereinafter, embodiments of the present invention will be explained with reference to the drawings.

(Figure 152 shows the first embodiment of the device of the present invention,
Evaporators (4) equipped with a flash box (1), a themistor (2), and a condenser (3) are arranged in multiple stages, and seawater is supplied to one end of the condenser (3) of each evaporator (1). 7 of the evaporator (4) on the one end side to be evaporated. Send it to the lasso box (until 11 o'clock) so that it evaporates.

The steam from each condenser (3) of the plurality of evaporators (4) on the other end side, that is, on the high temperature stage side, is extracted (piping (5)).
(-2), and the respective bleed pipes (5) are arranged (-1).
The confluence pipe (6) is connected to the confluence 'm' (a condenser (7) for condensing water vapor to Gl, and a vacuum horn (8) as a bleed device!, c 111i:j B (downstream 1).
1ilj t, this 1 role, 1 thought about carbon dioxide scum
Pseudoconstriction) 11 times in a dry state! / L f3+).

In addition, each of the residual condensers (3) on the low-temperature stage side and the condenser (4) are connected to the bleed pipe I, respectively, and the final stage condenser (3)
Karading” - Riri (!) Popularity 17 than iJ2 1
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Since l'l and +7 were formed on the above-mentioned -), each evaporation of 14N
t Low '/, 11. Step (Ill L to J 1 item 1 rule to I \\ and gradually G turn part and also lfj, tk
1) [After being heated by 1 Mi 1 River Heater, high school 1?
+
l! , two sent.

To 11, the dissolved air components of nitrogen, oxygen, and carbon dioxide are easily released by heating < 11
The merging pipe (6) is connected by one vacuum pump (8).
) and each oil pipe (5), condenser (3) and evaporator (
4) Since there is a negative pressure inside, the evaporation of water in the heated seawater is promoted, and the release of air components is also accelerated.

The water vapor and other waste components evaporated in the first evaporator (4) pass through the themistor (2) 7, where water droplets are separated, and then reach the condenser (3). The water vapor is cooled by the seawater flowing through the condenser (3), and the water vapor condenses and accumulates in the receiver, but other gas components such as nitrogen, oxygen, carbon dioxide, etc. are non-condensable, so they are extracted as gases. Piping (5
).

Next, some of the water has evaporated and the seawater from which a considerable part of the dissolved air components have been removed enters the flash hox (1) of the next stage evaporator (4), where it evaporates as before. The discharge of other waste components, the condensation and non-condensation of water vapor, and the extraction of 1 cassette are carried out.

Thereafter, in the same manner as described above, in the final stage, water vapor is condensed and non-condensable waste is removed to obtain distilled water, non-condensable gas, and concentrated seawater.

Below, at the upper level 0 of L, each Franche box (1)
The temperature of the seawater in the Q stage is the highest in the first stage, gradually lowers T, and becomes the lowest in the final stage, and the carbon dioxide bleed gas is recovered in high concentration and with good yield on the high temperature stage side.

Here, the non-condensable scum containing a large amount of carbon dioxide gas is still accompanied by water vapor, but unless the condenser (7) O. The entrained water vapor is condensed and separated to obtain a non-condensable gas of dry carbonate sludge.

When this dry non-condensable gas rich in carbon dioxide gas is introduced into the distilled water pipe that handles the distilled water accumulated in each of the condensers (3), the non-condensable gas components, especially the carbon dioxide residue, are removed from the distilled water.
After the C-j is well dissolved in the water, calcium hydroxide, etc. can be added to the upper culm to easily soften the water, resulting in drinkable water.

FIG. 3 shows a second embodiment of the device of the present invention, which has approximately the same configuration as the first embodiment, but a water vapor ejector (Hl) is installed on the downstream side of the merging pipe (6). New road connected to exit 11-1 (I+) of steam ejector (10)
12) is introduced into the steam condensing condenser (7),
This is an example in which dry non-condensable gas rich in carbon dioxide gas can be recovered.

In the case of this example, a steam ejector GO+ was used as a means to bleed the non-condensable gas from each condenser (3), and some steam entrained in the non-condensable gas and the bleed gas were used. Water vapor is condensed and separated using a condenser (force) to obtain a dry, non-condensable gas rich in carbonate residue.

FIG. 1 shows a third embodiment of the device of the present invention.
In a configuration substantially similar to that of the embodiment, a vacuum pump (8) of a collecting pipe (6) equipped with a condenser (force and a vacuum pump (8)) is used.
) A storage tank (13) is installed on the downstream side to store the dry non-condensable residue of carbonic acid cassrich.
This is one row. According to this embodiment, it is possible to store a dry, non-condensable casker rich in carbon dioxide gas, and even if the vacuum pump (8) is stopped or +J2 is present, carbon dioxide rich gas can be supplied for a certain period of time, and it is also possible to desalinate seawater. It is possible to stably supply carbonic acid/slinching gas regardless of fluctuations in the operation of the device. Figure 5 shows a fourth embodiment of the device of the present invention, in which a multi-stage G The evaporator (
4) When there are multiple 7ff, each vacuum honno °(8) lower m (ltll confluence QF,' This is an example in which dry non-condensable scum rich in carbon dioxide gas can be collected and transferred by a transfer pipe flfi having a 15+. Non-condensation 'l/1: The waste can be collected all at once and transported.

5. The carbon dioxide recovery device of the present invention is limited only to the embodiments of −1; Storage of non-condensable scum from carbon dioxide linosa l111
It is of course possible to make various changes without departing from the gist of the present invention, such as storing the product in a G tank.

〔Effect of the invention〕

As mentioned above, according to the carbon dioxide recovery device of the present invention,
Since the non-condensable gas rich in carbon dioxide generated from the evaporator on the high temperature stage side is collected and the entrained water vapor is removed from the condenser G and dried, it is possible to recover the carbon dioxide gas. Processing of distilled carbon dioxide to make drinking water
Since it is dry, it can be stored and the vacuum pump can be stopped.
In addition, the carbon dioxide sludge can be supplied to the tls with a capacity of 111, and the carbon dioxide sludge can be stably supplied to the oJ capacity, showing excellent effects of pressing.

[Brief explanation of the drawing]

'eV's Figure 1 (・) A small explanatory diagram of an example of a general evaporative seawater desalination apparatus, Figure 2 is an explanation of the first practical example of the apparatus of the present invention, and Figure 3 is an explanatory diagram of the first practical example of the apparatus of the present invention. FIG. 4 is a partial explanatory diagram of the second embodiment of the apparatus of the present invention, FIG. 4 is a partial explanatory diagram of the third embodiment of the present invention, and FIG. 5 is an explanatory diagram of the fourth embodiment of the apparatus of the present invention. (1) Haflash box, (2) Themista, (3
) is the condenser, (4) is the evaporator, (5) is the extraction pipe, (6
) is a confluence pipe, (7) is a condenser, (8) is a vacuum pump, flO) is a water vapor 1 jector, (13+ is a storage tank, 04) is a Komoshiheg, (flit is a transfer tt.).!11 ￥ 1j Upper request People's rights Shimabari 1 false tun T industry stock - 把会 ん 地 Fig. 1 1+ 1+ Fig. 2 4

Claims (1)

[Claims] 1) Connect the bleed pipes of each condenser on the high-temperature stage side of the evaporative seawater desalination equipment, and connect the condenser and bleed device for water vapor condensation to the merging pipe that communicates with the inner pipe of each bleed air. 1. A carbon dioxide recovery device characterized by being provided with: