JPH0690987A - Apparatus for production of carbonated spring - Google Patents

Abstract

PURPOSE:To stabilize the flow rate of desorded gas and concn. of carbon dioxide from a carbon dioxide absorption column by constituting the apparatus in such a manner that the outdoor air is passed in the adsorption column by the operation of an air feed pump at the time of desorbing the adsorbed and separated carbon dioxide. CONSTITUTION:Valves 31, 39 are closed and the temp. in the carbon dioxide adsorption column 12 is increased by operating a heater 13, by which the carbon dioxide and harmful bases in combustion gases are desorbed. The air 5 is sent into the carbon dioxide adsorption column 12 by a gas geed pump 100, by which the flow rate of the desorbed gas and the concn. of the carbon dioxide are stabilized. The desorbed gas is passed together with the air 5 through a connecting pipe 26 then through a CO and NOx removing device where the harmful CO, NOx, etc., are removed by adsorption or cracking. The concd. carbon dioxide is thereafter fed into the bath through the stop valve by the pump. As a result, the concd. carbon dioxide substantially free from harmful gases is penetrated into hot water 18. A bathing person is thus provided with the carbonated spring which is safe and physiologically effective.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a concentrating means for concentrating carbon dioxide in combustion gas using an adsorbent,
The present invention relates to a carbonated spring producing apparatus which can obtain a carbonated spring in a bath by the concentrated carbon dioxide gas produced by this means.

[0002]

2. Description of the Related Art A method of producing a carbonated spring uses a carbon dioxide gas cylinder or tank as a carbon dioxide gas source or a mixture of a carbonate and an acid (carbonate and an acid react in water to generate carbon dioxide). There is. When using a combination of a carbonate and an acid, the composition must always be purchased and prepared, and it is necessary to add it to the bathtub one by one.
It can be said that it is time-consuming. In comparison, the carbon dioxide gas cylinder can be said to be a carbon dioxide gas source capable of supplying carbon dioxide gas for a relatively long time. However, this has a problem that the handling due to the high pressure cylinder is complicated, or the method of obtaining the carbon dioxide gas cylinder is not always simple. Therefore, as a carbon dioxide gas source in a conventional carbonated spring manufacturing device,
There was a problem that there was nothing that could be easily obtained within a short time and could be permanently installed.

In view of the above drawbacks, for example, a concentrating means for concentrating the carbon dioxide gas in a combustion gas containing carbon dioxide gas such as city gas or propane gas by using an adsorbent, and a concentrating means. An apparatus for producing a carbonated spring, which is provided with an air supply means for sending carbon dioxide gas into the bath liquid and is capable of obtaining a carbonated spring in the bath by the concentrated carbon dioxide gas, has been considered. This device is very promising because it can be installed permanently and can continuously supply carbon dioxide gas. This is because the combustion gas generated along with the combustion of the fuel containing hydrocarbon (such as city gas) generated in the combustor such as the water heater can be used.

Air is generally used as the oxygen source required for combustion of gas. In fact, air is also used in this embodiment of the invention. The combustion reaction formula is as follows. CnHm + (n + m / 4 + k) O ₂ + (4n + m + 4k) N ₂ → nCO ₂ + m / 2H ₂ O + kO ₂ + (4n + m + 4k) N ₂・ ・ ・ [However, air The molar ratio of O ₂ and N ₂ is approximately N ₂ / O
₂ = 4. The combustion excess air kO ₂ and 4 kN ₂
Consists of. n and m are natural numbers and k is a positive real number.] The carbon dioxide gas in the combustion gas (the right side of the formula) that is generated next is concentrated, and then it is sent into hot water for bathing, that is, bath liquid. That is, the carbonated spring is artificially revealed by melting the.

Even if the combustion gas of city gas or propane gas is fed into the bath liquid as it is, the concentration of carbon dioxide gas in the bath liquid does not easily exceed 60 ppm. Therefore, carbon dioxide gas is concentrated from the combustion gas using an adsorbent or the like. On the other hand, the concentrating means has an adsorption tower that stores an adsorbent that adsorbs carbon dioxide (hereinafter referred to as "carbon dioxide adsorbent" as appropriate) and a heating means that heats the inside of the adsorbent. The heating means heats the adsorbent. The carbon dioxide gas that has been adsorbed and separated is desorbed to obtain concentrated carbon dioxide gas. Concentrated carbon dioxide gas is obtained by the so-called temperature swing method.

[0006]

However, in the case of the above carbonated spring producing apparatus, the desorption of the carbon dioxide gas adsorbed by the adsorbent substantially depends only on the heating of the heating means, and the flow rate of the desorbed gas and Carbon dioxide concentration was unstable. For this reason, the pressure and flow rate of the pump, which is the main constituent element of the air supply unit in the subsequent stage, change significantly, which imposes an unreasonable operation on the pump, resulting in shortening the life of the pump. In addition, when the flow rate of the desorbed gas and the carbon dioxide concentration are unstable, the dissolution rate of carbon dioxide in the bath liquid is not constant, and it is possible to predict the time to reach an appropriate state that produces a sufficient physiological effect. There is a problem that it is difficult to use and is not convenient for the user.

In view of the above circumstances, it is an object of the present invention to provide a carbonated spring manufacturing apparatus in which the flow rate of the desorbed gas from the carbon dioxide adsorption tower and the carbon dioxide concentration are stable.

[0008]

In order to solve the above-mentioned problems, in a carbonated spring producing apparatus according to the present invention, a concentration means for concentrating the carbon dioxide gas in the combustion gas containing carbon dioxide gas by using an adsorbent, An enriched carbon dioxide gas is sent into the bath liquid, and a carbonated spring can be obtained in the bath by the concentrated carbon dioxide gas. In the enrichment means, an adsorption tower containing the adsorbent is provided. In a structure having a heating means for heating the inside of the tower, in which a concentrated carbon dioxide gas is obtained by heating the adsorbent by the heating means to desorb the carbon dioxide gas adsorbed and separated, the combustion gas supply to the adsorption tower It is characterized in that it is provided with an air supply pump for sending the outside air into the tower from the side, and the outside air is made to flow in the adsorption tower by the operation of the air supply pump during the desorption.

Further, in the carbonated spring producing apparatus of the present invention, the constitution in which the gas passage between the concentrating means and the air feeding means is provided with a throttle is very useful. In this case, a diaphragm with a fixed diaphragm amount may be used, or a diaphragm with a variable diaphragm amount may be used.

[0010]

In the apparatus for producing carbonated spring according to the present invention, when desorbing in the carbon dioxide gas adsorption tower, the outside air having a low carbon dioxide gas concentration is flown, and the desorbed carbon dioxide gas does not stay around the adsorbent.
The carbon dioxide gas adsorbed one after another can be rapidly desorbed without delay. If the desorption of carbon dioxide gas is too quick, the desorption amount may become too large, but it is possible to avoid an excessive desorption amount due to the pressure loss from the adsorption tower to the bath. As a result, the flow rate of the desorbed gas and the concentration of carbon dioxide are stable, it is possible to prevent the operation of the pump of the air supply means from being forced, and until the carbonated spring has an appropriate concentration of carbon dioxide that produces a sufficient physiological effect. It is easy to predict the time.

The throttle provided in the gas flow path between the concentrating means and the air supply means can accurately set the flow rate and the pressure suitable for the scale of the pump of the air supply means, thereby eliminating the unreasonable operation of the pump. It will be possible to accurately predict the time required to make a carbonated spring.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing the embodiments thereof. 1 to 3 are block diagrams showing a carbonated spring manufacturing system using the apparatus of the embodiment. In these drawings, some of the drawings are duplicated so that the connection state between the drawings can be easily understood.

In this system, as shown in the figure, the combustion gas 3 produced in the water heater 2 using the city gas 1 as fuel is dehumidified through the water vapor adsorption tower 8 containing activated alumina, and then the carbon dioxide gas of the concentrating means is removed. After the carbon dioxide gas is adsorbed and separated in the adsorption tower 12, next, the adsorbed carbon dioxide gas is desorbed to obtain concentrated carbon dioxide gas, and the concentrated carbon dioxide gas is decomposed or adsorbed and removed through the CO and NO _x removal device 33. After bath 1
A carbonated spring can be obtained by supplying the concentrated carbon dioxide gas 16 into the bath liquid (hot water 18) of No. 7.

As shown in FIGS. 1 and 2, a cooler 4 and a pump 7 are sequentially installed between the exhaust port of the water heater 2 and the inlet of the water vapor adsorption tower 8, and a connection is provided between them. Tube 19,
They are connected by 20, 21, 22, etc. The connecting pipe 20 is branched on the way, and in order to store the condensed water 6, a condensed water reservoir having a valve 30 is provided in the lower part. Since the combustion gas 3 is very hot immediately after being generated, the cooler 4
After cooling with, it is fed into the water vapor adsorption tower 8.

In the water vapor adsorption tower 8, activated alumina for adsorbing water vapor is contained in the tower, and the inside of the tower is heated by a heater 9 provided inside or outside the tower. This water vapor adsorption tower 8
As shown in FIG. 1, a valve (open / close valve) 31 is installed between the outlet of the above and the inlet of the carbon dioxide adsorption tower 12, and the connecting pipes 23 and 24 connect between them. In addition, in order to store the condensed water 10 in the middle of the connecting pipe 23, a condensed water reservoir having a valve 35 at the bottom is connected.

A heater 13 for desorbing adsorbed carbon dioxide gas is installed in the carbon dioxide adsorption tower 12 inside or outside the tower, and zeolite (carbon dioxide adsorbent) is accommodated therein. The outlet of the carbon dioxide adsorption tower 12 has a connecting pipe 26,
It is connected to the outside of the system via 27 and the valve 39. Further, an air feed pump 100 is connected to the combustion gas introduction side of the carbon dioxide adsorption tower 12 so that air (outside air) can be introduced into the carbon dioxide adsorption tower 12. That is, the connecting pipe 25 that branches in the middle of the connecting pipe 24.
The air supply pump 100 is provided in the air conditioner, and the suction port side of the pump 100 is open to the outside air.

Between the outlet of the carbon dioxide adsorption tower 12 and the bath 17, as shown in FIG. 3, a CO and NO _x removal device (removal tower) 33, a throttle 11, and a pump (air supply means) 15 are installed in order. The connecting pipes 26 and 28 are connected between them. Then, the CO and NO _x removal device 33 includes
A pump 29 and a valve 32 for introducing air (outside air) into the removal tower are connected. When the pressure loss between the carbon dioxide adsorption tower 12 and the pump 15 is appropriate and the desorbed gas amount is appropriate, the throttle 11 is not necessary.

The CO, NO _x removal device 33 is filled with γ-Al ₂ O ₃ (adsorbent) carrying platinum, and a heater 34 for heating the adsorbent is provided inside or outside the device. It is provided. Next, the adsorption process of carbon dioxide gas in the combustion gas during operation of the carbon dioxide spring manufacturing apparatus according to the embodiment will be described.

Combustion gas 3 generated in the water heater 2 is pump 7
The operation enters the cooler 4 to be cooled and cooled / preliminarily dehumidified. At this time, the valve 30 is closed, and the dew condensation water 6 generated by dew condensation is stored in the dew condensation water reservoir, and after the adsorption process is completed, the valve 30 is opened and discharged to the outside of the system. The combustion gas 3 that has been cooled and pre-dehumidified is connected to the connecting pipe 2 by the operation of the pump 7.
After passing through 1, 22 and entering the water vapor adsorption tower 8 to be dehumidified,
It goes out from the outlet of the water vapor adsorption tower 8.

The dehumidified combustion gas 3 discharged from the outlet of the water vapor adsorption tower 8 is introduced into the carbon dioxide adsorption tower 12 through the valve 31, and the carbon dioxide is adsorbed and separated by the carbon dioxide adsorbent,
The remaining non-adsorbed gas 14 is discharged from the outlet of the carbon dioxide gas adsorption tower 12 through the valve 39 to the outside of the system. The carbon dioxide adsorption process continues for a predetermined period. Next, the desorption process of carbon dioxide gas and the manufacturing process of carbonated spring will be described.

In the process of desorbing carbon dioxide, the three-way valve 3
1, 32, 39 are closed, the heater 15 is operated, and the temperature inside the carbon dioxide adsorption tower 12 is raised, so that carbon dioxide gas and harmful gases (CO, NO _x, etc.) in the combustion gas are desorbed. To do. At this time, the air 5 containing almost no carbon dioxide gas is sent to the carbon dioxide gas adsorption tower 12 by the air supply pump 100, and the flow rate of the desorbed gas and the carbon dioxide gas concentration are stabilized as described above.

The desorbed gas passes through the connecting pipe 26 together with the air 5 through the CO, NO _x removing device 33, and harmful CO, NO _x.
Are removed by adsorption or decomposition. Then, after passing through the throttle 11, the concentrated carbon dioxide gas is pumped by the pump 15 into the bath 17.
Sent in. As a result, the concentrated carbon dioxide gas containing almost no harmful gas is dissolved in the hot and cold water 18 to provide the bather with a safe and physiologically effective carbonated spring.

Next, the regeneration of the water vapor adsorption tower 8 will be described. Keep the water heater 2 in the inactive state, and use the valve 31
And the power of the heater 9 is turned on to heat the inside of the water vapor adsorption tower 8 to desorb the adsorbed water vapor. The desorbed water vapor is aerated by the operation of the pump 7 through a path of the connection pipe 22, the water vapor adsorption tower 8-the connection pipe 23-the valve 35-outside the system, and is discharged as water vapor or condensed water 10.

Regeneration of the CO and NO _x removing device 33 will be described. While operating the heater 34 to heat the adsorbent, or after heating, only the valve 32 is opened and the pump 2
By operating 9 the air 5 is passed through the inside of the device to promote desorption of the gases adsorbed by the adsorbent. Further, in order to prepare for the next adsorption of carbon dioxide gas, the system may be cooled after the regeneration of the adsorbent.

In the case of the embodiment, the operation control of each valve, the heater, the pump, etc., or the determination and control of the ventilation conditions are automatically performed by a controller (not shown) using a microprocessor or the like. Although it is possible to perform unmanned driving, the present invention is not limited to this and may be partially operated manually. Also, in the above example,
Carbon dioxide was sent to the bath liquid in the bathtub, but the bath liquid may be drawn from the bathtub by a pipe, and carbon dioxide may be sent in the middle and then returned to the bathtub. .

[0026]

In the carbonated spring production apparatus of the present invention, the flow rate of the desorbed gas and the carbon dioxide concentration of the carbon dioxide adsorption tower are stable, and the operation of the pump of the air supply means is not so difficult. The service life will not be shortened, and the time to reach an appropriate state in which a sufficient physiological effect is produced can be predicted easily, which improves usability.

Further, when there is a throttle, the throttle provided in the gas flow path between the concentrating means and the air feeding means ensures the elimination of the unreasonable operation of the pump and the accurate prediction of the time required to produce the carbonated spring. It is even more advantageous in terms of pump life and usability.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration around a water vapor adsorption tower and a carbon dioxide adsorption tower in a carbonated spring manufacturing system using an apparatus of an embodiment.

FIG. 2 is a block diagram showing a configuration around combustion gas intake in a carbonated spring manufacturing system using the apparatus of the embodiment.

FIG. 3 is a block diagram showing a configuration around a bathtub in a carbonated spring manufacturing system using the apparatus of the embodiment.

[Explanation of symbols]

 1 City gas 2 Water heater 3 Combustion gas 5 Air (outside air) 8 Water vapor adsorption tower 9 Heater 11 Throttle 12 Carbon dioxide adsorption tower 13 Heater 20 Bath 100 Air pump

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[Procedure amendment]

[Submission date] December 28, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

[0021] In the desorption process of carbonic acid gas, valves 31,3
2, 39 are closed, the heater 15 is operated, and the temperature inside the carbon dioxide adsorption tower 12 is raised, so that carbon dioxide gas and harmful gases (CO, NOx, etc.) in the combustion gas are desorbed. At this time, the air 5 containing almost no carbon dioxide gas is sent to the carbon dioxide gas adsorption tower 12 by the air supply pump 100, and the flow rate of the desorbed gas and the carbon dioxide gas concentration are stabilized as described above.

Claims (2)

[Claims] 1. Concentrating means comprising: a concentrating means for concentrating the carbon dioxide gas in the combustion gas containing carbon dioxide using an adsorbent; and an air feeding means for feeding the concentrated carbon dioxide gas into the bath liquid. Carbon dioxide is obtained from the carbon dioxide gas in the bathtub.The concentrating means has an adsorption tower containing the adsorbent and a heating means for heating the inside of the tower, and the heating means heats the adsorbent. In a carbonated spring manufacturing apparatus that can obtain concentrated carbon dioxide gas by desorbing the carbon dioxide gas that has been adsorbed and separated, an apparatus for supplying the outside air from the combustion gas supply side of the adsorption tower to the tower is provided, An apparatus for producing carbonated spring, characterized in that the outside air is made to flow through the inside of the adsorption tower by the operation of the air supply pump during separation. 2. The carbonated spring manufacturing apparatus according to claim 1, wherein a throttle is provided in the gas flow path between the concentrating means and the air feeding means.