JPH05337161A - Carbonated spring manufacturing apparatus - Google Patents

Abstract

PURPOSE:To simplify the construction of a carbonated spring manufacturing apparatus by dehumidifying combustion gas of town gas in an activated alumina column, making carbonic acid gas adsorbed by an adsorption column to separate unnecessary gas, then again passing the concentrated carbonic acid gas obtained by removing the adsorbed carbonic acid gas through the activated alumina column and supplying the concentrated carbonic acid gas to bath. CONSTITUTION:Combustion gas containing carbonic acid gas obtained from the combustion of town gas is introduced from the left side of a 3-way valve 32, cooled by a cooler 4 to separate dew water, dehumidified and then sent to an activated alumina column 7 by a pump 5. The combustion gas is heated by a heater 9 in the column 7 and sent to a carbonic acid gas adsorption column 8 after unnecessary substances are adsorbed by activated alumina, and the carbonic acid gas is separably adsorbed by an adsorbent. After the completion of the adsorption, valves 29, 31 are opened and the other valves are all closed. The carbonic acid gas is heated 10 to eject and return the concentrated carbonic acid gas again to the activated alumina tower 7 to make noxious gas adsorbed. The concentrated carbonic acid gas is sent from the valve 31 to a bathtub a provide a carbonated spring. Thus, the carbonated spring is manufactured with high safety and low price by simple constitution.

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, it is equipped with a concentrating means for concentrating carbon dioxide gas in a combustion gas containing carbon dioxide gas using an adsorbent. The present invention relates to an apparatus in which a carbonated spring can be obtained in a bath 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, for example, carbon dioxide gas in combustion gas generated by combustion of fuel containing hydrocarbons such as city gas and propane gas is concentrated using an adsorbent. An apparatus for producing a carbonated spring, which is equipped with a concentrating means for allowing the carbonated spring to be obtained in the bathtub by the carbon dioxide gas concentrated by this means, has been considered.
This device is very promising because it can be installed permanently and can continuously supply carbon dioxide gas. Fuels containing hydrocarbons generated in combustors such as water heaters (city gas, etc.)
This is because the combustion gas generated with the combustion of 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 approximate molar ratio of O ₂ and N ₂ is 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 combustion gas (right side of the formula) generated next is concentrated and then fed into hot water for bathing, that is, bath liquid. It means that 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.

[0006]

However, the above device has a problem that the carbon dioxide adsorbent is easily deteriorated. Zeolite or the like, which has a high adsorption capacity, is used as a carbon dioxide adsorbent, which easily adsorbs water, but the adsorbed water reduces the adsorption capacity of carbon dioxide. A large amount of water vapor (moisture), which causes a decrease in adsorption capacity, is contained in the combustion gas. If the carbon dioxide adsorbent deteriorates easily, it is hard to say that it is a practical carbonated spring manufacturing device.

Further, the combustion gas of city gas or propane gas contains harmful gases such as carbon monoxide (CO) and nitrogen oxides (NO _x ) in addition to carbon dioxide gas. Not only is it adsorbed with carbon dioxide by the adsorbent, but it is also sent into the bath liquid together with carbon dioxide during desorption, and dissolves in the bath liquid to deteriorate water quality, or is not dissolved and diffuses into the bathroom air. To worsen. If this happens, there is a risk of gas poisoning of the bather, which is not preferable for safety. If you can not avoid such problems,
It is hard to say that it is a practical carbonated spring manufacturing device.

By disposing an adsorption tower for adsorbing water in front of the concentrating means and an adsorbing tower for adsorbing and removing harmful gas between the concentrating means and the bath, it is possible to prevent deterioration of the carbon dioxide adsorbent and remove harmful gas. Although it can be done, a new carbonated spring manufacturing apparatus will not be a practical one due to the new problems that the apparatus configuration becomes complicated and the apparatus becomes expensive. This invention is
In view of the above circumstances, the carbon dioxide adsorbent is less likely to deteriorate and the carbon dioxide gas containing no harmful gas can be fed into the bath liquid without causing an excessively complicated device configuration and a large increase in the device price. An object is to provide a carbonated spring manufacturing device.

[0009]

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 by using an adsorbent, and And a means for adsorbing and separating undesired substances using activated alumina as an adsorbent, which is disposed in the preceding stage of the concentrating means, and introduces the combustion gas into the concentrating means after dehumidifying the combustion gas through the undesired material adsorbing and separating means. Equipped with an air supply means for removing the harmful gas from the concentrated carbon dioxide gas discharged from the unwanted substance adsorption separation means and then sending it into the bath liquid so that the carbonated spring can be obtained in the bathtub by the concentrated carbon dioxide gas. Is becoming

The air supply means is composed of, for example, a pump, a valve, a connecting pipe, and a control unit for controlling the operation of these pumps and the opening / closing of the valve, as in the embodiment described later. Then, by the pump, the combustion gas is adsorbed and separated by the adsorbent separation column (hereinafter,
It is dehumidified through a "activated alumina column" and sent to a concentrating means to adsorb carbon dioxide to a carbon dioxide adsorbent (for example, zeolite) of the concentrating means. Further, in the carbon dioxide desorption process, a valve or the like is switched so that a carbon dioxide gas discharged from the concentrating means is passed through the same activated alumina column by a pump to remove harmful gas and sent into the bath water.

That is, in the present invention, the same activated alumina column is used for dehumidification and removal of harmful gas unwanted substances. The inventors have found that the activated alumina adsorbent has not only a water adsorption function but also a function of reducing harmful gases such as nitrogen oxides (NO _x ) and carbon monoxide (CO). It has been found that can be used for both dehumidification and removal of harmful gases.

In the treatment for reducing nitrogen oxides and carbon monoxide, the internal temperature of the activated alumina column is preferably set at 200 ° C. or a little higher. Tower temperature and NO
The relationship of the removal rate is shown in FIG. The removal rate is good at about 200 to 350 ° C. The relationship between the temperature inside the tower and the CO removal rate is shown in FIG. At 200 ° C., a removal rate of almost 100% is reached.

Activated alumina is a relatively frequently used adsorbent and is easily available and inexpensive.

[0014]

In the carbon dioxide gas adsorbing process of the carbonated spring producing apparatus of the present invention, water in the combustion gas, which is an unnecessary substance, is removed by the activated alumina column and then sent to the concentrating means. Deterioration due to is suppressed. In the carbon dioxide desorption process of the carbonated spring manufacturing apparatus of this invention, harmful gas in carbon dioxide, which is an unnecessary substance, is also removed into the bath liquid after being removed by the activated alumina tower, so there is no risk of poisoning by harmful gas. A carbonated spring can be created.

Since the removal of moisture (dehumidification) of the combustion gas and the removal of harmful gas are carried out in the same activated alumina column, the apparatus structure is not so complicated, and the adsorbent itself is inexpensive. Since activated alumina is used for both processes, there will be no significant price increase.

[0016]

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 figures, a part of them is duplicated so that the connection state between the figures can be easily understood. In this device, the hydrocarbon-containing fuel is city gas.

In this 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 through the activated alumina column (unnecessary substance adsorption / separation means) 7, and then the carbon dioxide gas is adsorbed. After the carbon dioxide gas is adsorbed and separated in the tower 8, the adsorbed carbon dioxide gas is then desorbed to obtain concentrated carbon dioxide gas, which is passed through the activated alumina tower 7 again to the bath 15
A carbonated spring can be obtained by supplying it to the bath liquid (hot water 16).

As shown in FIGS. 1 and 2, a three-way valve 32 is provided between the exhaust port of the water heater 2 and the inlet of the activated alumina tower 7.
The cooler 4 and the pump 5 are installed in this order, and the connecting pipes 19, 17, 18, 39, etc. are connected between them. The remaining port of the three-way valve 32 is connected to the outlet of the carbon dioxide adsorption tower 8 by a connecting pipe 24. The connecting pipe 17 is branched on the way, and in order to store the condensed water 6, a condensed water reservoir 33 having a valve 27 is provided at the bottom. Since the cooler 4 has a very high temperature immediately after the combustion gas 3 is generated, it is installed to cool the combustion gas 3.

In the activated alumina column 7, activated alumina is contained in the column and a heater 9 for raising the temperature in the column is installed. As shown in FIG. 1, a valve (open / close valve) 29 is installed between the outlet of the activated alumina tower 7 and the inlet of the carbon dioxide adsorption tower 8, and connecting pipes 20, 21, It is connected by 22. In addition, connection pipe 2
After 0, in order to store the condensed water 11, a condensed water reservoir 34 with a valve 28 is provided in the lower part.

The carbon dioxide adsorption tower 8 is provided with a heater 10 for desorbing adsorbed carbon dioxide, and also contains zeolite (carbon dioxide adsorbent). The outlet of the carbon dioxide adsorption tower 8 is provided with connecting pipes 23 and 24 and a valve 30.
It is connected to outside the system via. Further, as shown in FIGS. 1 and 3, the inlet of the activated alumina tower 7 communicates with the bath 15 through a path of the connection pipe 25 branched from the connection pipe 39-the valve 31-the connection pipe 26-the pump 12.

Next, the carbon dioxide adsorption process in the combustion gas during operation of the carbonated spring manufacturing apparatus according to the embodiment will be described. The combustion gas 3 generated in the water heater 2 enters the cooler 4 from the three-way valve 32 by the operation of the pump 5, and is cooled and cooled.
Pre-dehumidified. At this time, the valve 27 is closed and the dew condensation water 6 generated by dew condensation is stored in the dew condensation water reservoir 33, and at the end of the adsorption process, the valve 27 is opened and discharged to the outside of the system.

The cooled and pre-dehumidified combustion gas 3 enters the activated alumina tower 7 through the connecting pipes 18 and 39 by the operation of the pump 5. Of course, at this time, the valve 31 is closed. The combustion gas 3 is dehumidified and flows out from the outlet of the activated alumina tower 7. At this time, the valve 28 is closed.
Dehumidified combustion gas 3 from the outlet of activated alumina tower 7
Is introduced into the carbon dioxide adsorption tower 8 through the valve 29,
The carbon dioxide gas is adsorbed and separated by the carbon dioxide gas adsorbent, and the remaining non-adsorbed gas 13 is discharged from the outlet of the carbon dioxide gas adsorption tower 8 through the valve 30 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 subsequently started. Valves 29 and 31
Is opened and the other valves are closed. When the heater 10 and the pump 12 are operated and the temperature inside the tower is raised, carbon dioxide gas is quickly desorbed from the adsorbent, and the desorbed carbon dioxide gas passes through the valve 29 in a concentrated form and the activated alumina tower 7 again. The concentrated carbon dioxide gas 14 that has entered a safe form and in which some or all of harmful gases (nitrogen oxides and carbon monoxide) have been adsorbed exits from the activated alumina column 7 outlet, passes through the valve 31, and passes through the bathtub. It is fed into the bath solution of 15 at an appropriate flow rate. As a result, a safe carbonated spring appears in the bathtub 15. In order to remove the harmful gas sufficiently, the inside of the activated alumina tower 7 is heated to 200 ° C. by the heater 9.
Or it is better to heat it to a little higher temperature.

That is, in this apparatus, the gas supply means is a water heater 2-three-way valve 32-cooler 4-pump 5-activated alumina tower 7-valve 29-carbon dioxide adsorption in the carbon dioxide adsorption process in the combustion gas. The column 8-valve 30-outside the system is ventilated, and in the carbon dioxide desorption process, the carbon dioxide adsorption column 8-valve 29-activated alumina column 7-valve 31.
-Pump 12-Bath 15 is used for ventilation. Therefore, the air supply means is composed of each pump, valve, connection pipe in the path, and a control unit (not shown) that operates the pump and opens / closes the valve.

When the activated alumina tower 7 is operated for a certain period,
Playback is performed as follows. The water heater 2 is kept in an inoperable state, the valve 28 is opened, the three-way valve 32 is arranged so that the water heater 2 communicates only with the cooler 4, and the subsequent valves are closed. Further, the inside of the activated alumina tower 7 is heated by the heater 9. Along with the operation of the pump 5, air is ventilated through a path of the connection pipe 19-cooler 4-pump 5-activated alumina tower 7-connection pipe 20-valve 28-outside the system, and the desorbed water vapor and harmful gas are discharged. Go out of the system with. The temperature for heating the inside of the activated alumina tower 7 is a temperature at which moisture or harmful gas adsorbed on the activated alumina is desorbed, and is appropriately set depending on processing conditions such as an aeration amount.

The activated alumina tower 7 and the carbon dioxide adsorption tower 8 are forcibly cooled as follows in preparation for restarting after the process is completed. Keep the water heater 2 in the stopped state,
The valve 29 is opened, the three-way valve 32 allows the cooler 4 to communicate only with the connecting pipe 24, and the subsequent valves are closed. The pump 5 is operated in this state. With the operation of the pump 5, the cooler 4-the pump 5-the activated alumina tower 7-the valve 29-the carbon dioxide adsorption tower 8-the connecting pipe 23-the connecting pipe 24
-Three-way valve 32-Circulator 4 is circulated and aerated, and the circulating air is cooled by cooler 4 in the middle, so that cold air always flows through activated alumina tower 7 and carbon dioxide adsorption tower 8, The towers 7 and 8 are rapidly cooled and can be restarted in a short time. Of course, if it is not necessary to prepare for restarting, this forced cooling process may be omitted.

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 a part of manual operation may be performed. In the above embodiment, carbon dioxide was sent to the bath liquid in the bathtub, but the bath liquid was drawn out from the bathtub by a pipe, and carbon dioxide was sent in the middle and then returned to the bathtub again. It may be like.

[0028]

As described above, in the carbonated spring producing apparatus of the present invention, since the combustion gas is sent to the concentrating means after the moisture is removed by the activated alumina column, the combustion gas depends on the water content of the carbon dioxide adsorbent of the concentrating means. Deterioration is suppressed, and the harmful gas in carbon dioxide is also removed by the activated alumina column before being sent into the bath liquid, so a highly safe carbonated spring without the danger of poisoning with harmful gas appears, and further Since the dehumidification of combustion gas and the removal of harmful gas are performed in the same activated alumina tower, the device configuration does not become complicated, and the adsorbent itself also uses inexpensive activated alumina in both processes. It is very practical because it does not cause a significant price increase.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration around an activated alumina column and a carbon dioxide gas adsorption column in a system using an apparatus of an example.

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

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

FIG. 4 is a graph showing the relationship between the temperature inside the activated alumina column and the NO removal rate.

FIG. 5 is a graph showing the relationship between the temperature inside the activated alumina column and the CO removal rate.

[Explanation of symbols]

 1 city gas 2 water heater 3 combustion gas 4 cooler 5 pump 7 activated alumina tower 8 carbon dioxide adsorption tower 12 pump 15 bath

[Procedure amendment]

[Submission date] September 21, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008] arranged adsorption tower adsorbs moisture in front of the enrichment means, if Haisure the adsorption tower for adsorbing and removing harmful gases during the concentration means and tub, removal of preventing deterioration and harmful gases carbon dioxide adsorbent However, due to the new problems that the equipment structure becomes complicated and the equipment becomes expensive, it is not a practical carbonated spring manufacturing device. In view of the above circumstances, the present invention makes it possible to prevent carbon dioxide adsorbent from deteriorating without causing excessive complication of the device configuration and a large increase in the device price, and to use carbon dioxide gas containing no harmful gas as a bath liquid. It is an object to provide a carbonated spring manufacturing device that can be sent inside.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

Next, the carbon dioxide adsorption process in the combustion gas during operation of the carbonated spring manufacturing apparatus according to the embodiment will be described. The combustion gas 3 generated in the water heater 2 enters the cooler 4 from the three-way valve 32 by the operation of the pump 5, and is cooled and cooled.
Pre-dehumidified. At this time, the valve 27 is closed, the dew condensation water 6 generated by dew condensation is stored in the dew condensation water reservoir 33, and after the adsorption process is completed, the valve 27 is opened and discharged out of the system.

Claims (1)

[Claims] 1. A concentrating means for concentrating the carbon dioxide gas in a combustion gas containing carbon dioxide using an adsorbent, and an adsorbent separating means for adsorbing activated alumina, which is arranged in the preceding stage of the concentrating means. The combustion gas is dehumidified through the unwanted substance adsorption / separation means and then introduced into the concentration means, and the concentrated carbon dioxide gas discharged from the concentration means is removed through the unwanted matter adsorption / separation means to remove harmful gas. A carbonated spring manufacturing device that is equipped with an air supply means for sending it into the bath liquid after that, so that carbonated spring can be obtained in the bathtub by the concentrated carbon dioxide gas.