JPH05337159A - Carbonated spring manufacturing apparatus - Google Patents

Abstract

PURPOSE:To prevent a person from gas poisoning in bathing by providing a means for reducing noxious gas contents in carbonic acid gas sent into solution in an apparatus for concentrating the carbonic acid gas in combustion gas by utilizing an adsorbent and sending the concentrated carbonic acid gas in the solution to obtain a carbonated spring. CONSTITUTION:Combustion gas generated by a hot water supplier using town gas for fuel is dehumidified in a steam adsorption column 7 and then after carbonic acid gas is separably adsorbed in a carbonic acid gas adsorption column 9, the adsorbed carbonic acid gas is separated to obtain concentrated carbonic acid gas. The concentrated carbonic acid gas is sent through a 3-way valve 20 and pipe lines 31a, 31b into solution (hot water) in a bathtub to prepare a carbonated spring. In such a carbonated spring manufacturing system, a noxious gas reducing means 11 is interposed on the way of the pipe lines 31a, 31d. The noxious gas reducing means 11 has a process tower 31 filled with an adsorbent carrying platinum and the noxious gas passing through the process tower is removed to be subjected to regenerative process in any proper time by heating a heater 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a carbonated spring, and more particularly to a concentration means for concentrating the carbon dioxide gas in a combustion gas containing carbon dioxide gas using an adsorbent, and the concentrated carbon dioxide gas. The present invention relates to a carbonated spring producing apparatus, which is provided with a means for feeding the soot into the bath liquid, so that carbonated spring can be obtained in the bathtub by the concentrated carbon dioxide gas.

[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 handling of a high-pressure cylinder is complicated, or a method of obtaining a 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 installed permanently.

In view of the above drawbacks, therefore, as an apparatus for producing carbonated springs, carbon dioxide gas in combustion gas is concentrated using an adsorbent, and the concentrated carbon dioxide gas is used as hot water for bathing, that is, bath liquid. It was conceived of a device having a structure for feeding it into the inside, in which a carbonated spring can be obtained in the bathtub by this concentrated carbon dioxide gas. This device is very promising because it can be installed permanently and can continuously supply carbon dioxide gas. Fuel containing hydrocarbons generated in water heaters (city gas, etc.)
This is because the combustion gas generated with the combustion of can be used.

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, but an adsorbent or the like is used from the above combustion gas. Then, carbon dioxide gas can be separated and collected and sent into the bath liquid to make a carbonated spring. Air is generally used as the oxygen source required for gas combustion. 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, the molar ratio of O ₂ and N _{2 in} the air 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] Carbon dioxide in the next combustion gas (on the right side of the formula) is concentrated and then fed into the bath liquid to dissolve the carbon dioxide in the bath liquid. This means that a carbonated spring is artificially created.

[0006]

However, the combustion gas of city gas or propane gas contains not only carbon dioxide but also harmful gases such as carbon monoxide (CO) and nitrogen oxides (NO _x ). However, these harmful gases are not only adsorbed with carbon dioxide by the adsorbent, but also sent into the bath with carbon dioxide during desorption, dissolved in the bath, or released into the bathroom. Become. If this happens, the problem will be serious, as there may be gas poisoning for bathers. If such a problem cannot be avoided, it cannot be said to be a practical carbonated spring manufacturing device.

In view of the above circumstances, it is an object of the present invention to provide a practical device used for producing a carbonated spring with sufficient safety against harmful gas existing in combustion gas and having high safety.

[0008]

In order to solve the above-mentioned problems, a carbonated spring producing apparatus according to the present invention comprises a concentrating means for concentrating the carbon dioxide gas in a combustion gas containing carbon dioxide gas using an adsorbent, and In addition to the means for feeding the concentrated carbon dioxide gas into the bath liquid, a means for reducing the harmful gas content of the carbon dioxide gas fed into the bath liquid is also provided.

As a means for reducing the harmful gas content of carbon dioxide gas fed into the bath liquid in the present invention (hereinafter referred to as "harmful gas reducing means"), for example, one having the structure shown in FIG. 1 can be mentioned. .. Harmful gas reduction means 1 of FIG.
1 is a processing tower 31 filled with an adsorbent carrying platinum.
And a heater 12 for raising the temperature in the tower.
The treatment tower 31 has a gas inlet 31a containing a harmful gas and a gas outlet 31b of the gas after reducing the harmful gas,
It has an inlet 31c for air 25 for adsorbent regeneration and an outlet 31d for this air.

The harmful gas reducing process and the regenerating process by the harmful gas reducing means 11 are as follows. The harmful gas reducing means 11 is disposed, for example, between the bath and the concentrating means. During the harmful gas reducing process, the carbon dioxide gas containing the harmful gas (concentrated carbon dioxide gas) emitted from the concentrating means is treated. It enters from the entrance 31a of the tower 31 and exits from the exit 31b and is sent to the bathtub. The harmful gas in the carbon dioxide gas is adsorbed or decomposed / oxidized by the adsorbent while passing through the processing tower 31, so that part or almost all of it disappears. For example, NO _X is mostly adsorbed, and CO is about 200 ° C. in an oxygen atmosphere.
2CO + O ₂ → 2CO ₂ is oxidized to become a harmless substance, and the harmful gas disappears. In the harmful gas reducing process, it is preferable that the inside of the tower is heated by the heater 12 to a temperature in a range where the harmful gas reducing function is enhanced.

After the harmful gas reduction process is performed for a certain period, the regeneration process is performed. During the adsorbent regeneration treatment, air is introduced through the inlet 31c of the treatment tower 31 and discharged through the outlet 31d, and at the same time, heated by the heater 12 so that the temperature inside the tower is higher than that during the harmful gas reduction treatment. To do. The adsorbed harmful gas and the like are desorbed and flow out from the discharge port 31d together with the air.

The adsorbent is not limited to one carrying platinum.
No, NO_XDecomposes into nitrogen and oxygen (NO _X→ N₂+ X
O₂) Adsorbent (eg Cu-supported Zeora)
Ito: Cu-ZSM5) or NO_XAbility to adsorb CO and CO
A type of adsorbent that has carbon dioxide gas adsorption capacity
(Zeolite MS13X) may be used.
Yes. Depending on the type of adsorbent, various conditions such as the temperature inside the tower
It goes without saying that it should be set appropriately.

The harmful gas reducing means 11 may be arranged at a position before the concentrating means, for example, near the outlet from the combustor described later or between the vapor deposition tower and the carbon dioxide adsorption tower. In other words, the harmful gas reducing means includes not only the case where the harmful gas in the carbon dioxide gas discharged from the concentrating means is eliminated but also the case where the harmful gas is removed at the stage of the combustion gas, and as a result, the carbon dioxide gas sent to the bath liquid is harmful. It need only contain no gas.

[0014]

In the carbonated spring manufacturing apparatus of the present invention, the harmful gas content of the carbon dioxide gas sent into the bath liquid is reduced by the harmful gas reducing means, so that the harmful gas is dissolved in the bath liquid or in the bathroom. There will be no situation where it will be released into the sea, and a highly safe carbonated spring will be manufactured.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing the embodiments thereof. 2 to 4 are block diagrams showing the configuration of a carbonated spring manufacturing system using the apparatus of the embodiment, and are partially overlapped for easy understanding of the connection state between the respective drawings. In this system, the combustion gas of city gas containing hydrocarbons is used, and carbon dioxide is separated and recovered by the temperature difference.
It uses the SA method.

In the carbonated spring manufacturing system, as shown in the figure, the combustion gas 3 generated in the water heater 2 using the city gas 1 as fuel is dehumidified in the water vapor adsorption (separation) tower 7, and then the carbon dioxide gas adsorption (separation) is performed. After the carbon dioxide gas is adsorbed and separated in the tower 9, the adsorbed carbon dioxide gas is desorbed to obtain concentrated carbon dioxide gas, and the concentrated carbon dioxide gas is fed into the bath liquid (hot water 15) of the bathtub 14 to form a carbonated spring.

As shown in FIG. 2, a cooler 4 with a fan 5 is provided between the exhaust port of the water heater 2 and the inlet of the water vapor adsorption tower 7.
The pumps 6 are sequentially installed, and the pumps 6 are connected to each other by a connecting pipe or the like. A valve 17 for collecting water vapor generated by heat exchange of the cooler 4 is provided in a path branched after the cooler 4.
An attached condensed water tank 18 is provided. The condensed water is discharged out of the system through the valve 17 after the production of the carbonated spring is completed.

In the water vapor adsorption tower 7, as shown in FIG.
Activated alumina (water vapor adsorbent) with a high dehumidifying capacity and equipped with a heater 8 for regenerating the water vapor adsorbent
Is housed. A valve (open / close valve) 19 is installed between the outlet of the water vapor adsorption tower 7 and the inlet of the carbon dioxide adsorption tower 9. The carbon dioxide adsorption tower 9 is provided with a heater 10 for desorbing adsorbed carbon dioxide, and contains zeolite (carbon dioxide adsorbent). Between the outlet of the carbon dioxide adsorption tower 9 and the bath 14, a harmful gas reducing means 11 is provided via a three-way valve 20 as shown in FIG.
And pump 13 are installed in order, and between them,
It is connected by a connecting pipe. The remaining port of the three-way valve 20 communicates with the outside of the system via a valve (open / close valve) 21.

The harmful gas reducing means 11 has a treatment tower 31 filled with an adsorbent carrying platinum, and a heater 12 for raising the temperature inside the tower. As shown in FIG. 1, the treatment tower 31 is provided with an inlet 31a for a gas containing a harmful gas and a gas outlet 31b for the gas after reducing the harmful gas, and to introduce air (air) for adsorbent regeneration. A port 31c and a discharge port 31d for this air are provided. Inlet 31
A pump 16 for feeding air 25 is connected to c, and a valve (open / close valve) 22 is provided at the discharge port 31d.

Next, the manner in which a carbonated spring is created by operating this system will be described. The combustion gas 3 generated in the water heater 2 enters the cooler 4 by the operation of the pump 6 and the fan 5
It is cooled in and cooled and pre-dehumidified. At this time, the valve 17 is closed and the condensed water is stored in the condensed water tank 18. The cooled and pre-dehumidified combustion gas 3 enters the water vapor adsorption tower 7. The combustion gas 3 is dehumidified and the water vapor adsorption tower 7
Exit from the exit. At this time, the valve 19 is opened, and the dehumidified combustion gas 3 discharged from the outlet of the water vapor adsorption tower 7
Is introduced into the carbon dioxide adsorption tower 9 through the valve 19,
The carbon dioxide gas is adsorbed and separated by the carbon dioxide gas adsorbent, and the remaining non-adsorbed gas is discharged from the outlet of the carbon dioxide gas adsorption tower 9 through the three-way valve 20 and the valve 21 to the outside of the system. The carbon dioxide adsorption process continues for a predetermined period of time.

When the carbon dioxide adsorption process is completed, the carbon dioxide desorption process is started. The valves 19, 22 and the like are closed, and the outlet of the carbon dioxide adsorption tower 9 is provided with the harmful gas reducing means 11
The three-way valve 20 is switched so as to connect with. When the temperature inside the tower is raised by the operation of the heater 10 installed in the carbon dioxide adsorption tower 9, carbon dioxide turns into harmful gas (NO _X or C
O) is rapidly desorbed together with the desorbed carbon dioxide, and the desorbed carbon dioxide gas passes through the three-way valve 20 by the operation of the pump 13 and passes through the harmful gas reducing means 11 whose temperature in the tower is adjusted to an appropriate temperature by the heater 12. It is sent into the bath liquid of the bathtub 14 at an appropriate flow rate.
The harmful gas in the carbon dioxide gas disappears while passing through the harmful gas reducing means 11, and the carbon dioxide gas becomes harmless. As a result, a safe carbonated spring appears in the bathtub 14.

When the harmful gas reducing means is used for a certain period, it is regenerated. The regeneration process proceeds as follows. The valve 22 is opened, the inside of the tower is heated to a high temperature by the heater 12, and at the same time, the air 25 is sent by the pump 16 to discharge the desorbed harmful gas and its decomposition products. With this, it is regenerated, and the harmful gas reduction process is ready for use again.

In the case of the embodiment, determination and control of various conditions such as operation control of each valve, heater, pump, etc. 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 a manual operation may be partially performed. In the above embodiment, carbon dioxide was sent to the bath liquid in the bathtub, but the bath liquid is drawn out from the bathtub by a pipe, and carbon dioxide gas is sent in the middle and then returned to the bathtub again. It may be like.

[0024]

As described above, in the carbonated spring manufacturing apparatus of the present invention, the harmful gas content of the carbon dioxide gas sent into the bath liquid is reduced by the harmful gas reducing means, so that the safety is improved. It can be done by exposing a high carbonated spring,
Very practical.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration example of harmful gas reducing means in the present invention.

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

FIG. 3 is a block diagram showing a configuration around a carbon dioxide adsorption tower of a system using the apparatus of the embodiment.

FIG. 4 is a block diagram mainly showing a harmful gas reducing means and a bathtub periphery of a system using the apparatus of the embodiment.

[Explanation of symbols]

 1 city gas 2 water heater 3 combustion gas 7 steam adsorption tower 9 carbon dioxide adsorption tower 11 harmful gas reducing means 14 bath

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hideaki Fukui 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. Concentrated carbon dioxide is provided with a concentrating means for concentrating the carbon dioxide gas in a combustion gas containing carbon dioxide gas using an adsorbent and a means for feeding the concentrated carbon dioxide gas into a bath liquid. A carbonated spring manufacturing apparatus, wherein a carbonated spring can be obtained in a bathtub by gas, comprising means for reducing the harmful gas content of carbon dioxide gas fed into the bath liquid.