JP2009291729A - Spa-water gas separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spa-water gas separator for safely separating, diffusing, and diluting gas to be separated by practicing combined water-spray, ventilation, and moisture-reduction and for preventing secondary damage such as spa-scale generation, a spa-water temperature fall, and white-smoke generation. <P>SOLUTION: In area 1, the spa water is sprayed onto an impact plate to separate the gas from the spa water and diffuse the gas. Then, the separated gas is diluted with primary outside air blow to prevent the hazard due to gas toxicity or explosion and, on the other hand, to reduce the partial pressure of the gas component to be separated in the system to enhance the separation performance of the system. In area 2, moisture is removed to prevent the white-smoke generation at an exhaust outlet and secondary outside air is blown in to approximate the temperature of the exhaust gas to that of the outside air and, at the same time, to dilute the concentration of the gas to that corresponding to the safety factor according to the kind of the gas component. In area 3, a silencer is installed to prevent the noise of the exhaust gas. Area 6, a spa-water storage, is ventilated via an exhaust pipe 114 to prevent the gas retention in the area. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an apparatus for safely separating, diffusing and diluting gas generated accompanying hot water from hot spring water, and performs efficient and effective gas separation, diffusion and dilution, while occurring as a side effect. The present invention relates to a gas separation device that realizes prevention or suppression of problems of hot spring scale generation, temperature drop of hot spring water, and generation of white smoke.

  In the past, hot spring water has been pumped up and stored in a water tank, and the phenomenon in which hot spring water gas is spontaneously released to the atmosphere by Henry's law has been used. However, in this method, it is difficult to make the concentration of the separation target gas below the saturation dissolution concentration in the hot spring water, the separation target gas remains or dissolves in the hot spring water, and the separation target gas is released from the hot spring water in a facility such as a bath. There was a problem of health damage due to explosion, combustion, lack of oxygen or harmful gas.

  In the prior art, because there is a risk of explosion due to the characteristics of the gas to be separated, a chimney is installed in the aquarium, and a special wire net is attached to the top of the chimney to prevent the intrusion of fire into the aquarium. However, this method has a problem that it is insufficient for the danger of high concentration gas staying in the water tank and exploding.

  Moreover, in the prior art fields other than hot spring water, for example, there exists an apparatus for separating dissolved gas by watering in a decarbonation tower facility. However, there is no corresponding device in the technical field for the purpose of gas separation and diffusion contained in hot spring water.

  In the field of gas separation technology for hot spring water, there were the following three problems as the background of the absence of gas separation devices by watering. First, when hot spring water is sprinkled into the air, oxygen in the air dissolves in the hot spring water and the components are oxidized, or carbon dioxide dissolved in the hot spring water is released into the air, so that carbon dioxide is discharged. The chemical change accompanying the reduction of hydrogen carbonate ion due to the occurrence of this, the component of the content of the component is low, the low solubility in water is generated, the generated material adheres in the equipment, and the removal cost of the deposit There was a hot spring scale problem. Secondly, there was a problem that the heat of the hot spring water was released by watering, the temperature of the hot water dropped, and the fuel for warming up the descent increased. Third, when water vapor is supplied from the hot spring water to the air inside the device due to gas separation and the air inside the device is discharged from the exhaust port to the outside air, it comes into contact with the outside air at a low temperature and the saturated water vapor amount as the exhaust temperature decreases However, there was a problem that the supersaturated water vapor liquefied and white smoke was generated. The problem to be solved by the invention is to realize an apparatus capable of performing efficient and effective gas separation, diffusion and dilution while preventing or suppressing these three side effects.

  The apparatus of the present invention is an application of Henry's law that the amount of gas dissolved in water is proportional to the pressure of the dissolved gas. The hot spring water is pumped from the hot spring well and supplied to the apparatus under high pressure. By reducing the hot spring water pressure in the hot spring well, the gas pressure of the gas to be separated decreases proportionally, so that the amount of gas to be separated decreases, and the gas to be separated that cannot be dissolved in the hot spring water. Gas separation is performed by utilizing the phenomenon of spontaneous release.

  However, in the above apparatus, since the gas contact is suppressed because the contact area with the outside air is small, it is necessary to increase the contact area with the outside air and promote the separation of the separation target gas. Therefore, this device is made by sprinkling hot spring water with a sprinkler tube to make it shower-like, increasing the gas-liquid interface surface area between the hot spring water and the air in the device, and installing an impact plate at the bottom of the sprinkler tube to impact the hot spring water. The movement of the gas component to be separated from underwater to the air in the apparatus according to Henry's law is promoted.

  However, according to Henry's law that the partial pressure of the target gas in the water is proportional to the partial pressure of the target gas in the contacting gas, the concentration of the separation target gas in the hot spring water that separated the separation target gas in the device is It was necessary to lower the partial pressure of the gas component to be separated in the air in the apparatus because the concentration of the gas to be separated in the hot spring water was not lowered any more because it was balanced with the concentration of the gas to be separated in the air in the apparatus. Therefore, the present apparatus is attached with a blower and blows outside air into the apparatus, thereby reducing the partial pressure in the apparatus air of the gas to be separated in the apparatus and promoting the separation.

  However, in the above apparatus, oxygen is supplied to the hot spring water by sprinkling and / or air blowing, and the components in the hot spring water are oxidized, or the gas components such as carbon dioxide which is not the separation target gas component are separated and hydrogen carbonate ions and the like are separated. The hot spring water is generated by reducing the components and changing them to carbonate ions, etc., resulting in a hot spring scale in which the components in the hot spring water are altered and sparingly soluble chemical substances are generated, and the hot spring water is blown out and exhausted. Moved to the exhaust and discharged, and the temperature of the hot spring water dropped, and it was necessary to suppress or prevent these side effects. Therefore, the present apparatus adjusts the drop of the water spray and the amount of air blown to suppress or prevent the generation of the hot spring scale while promoting the separation of the separation target gas and suppressing or preventing the decrease in the hot water temperature.

  However, in the above devices, the air inside the device needs to be diluted because of the limited risk of explosion due to the restriction of the amount of air blown in the case of flammable gases such as methane, or in the case of gases such as hydrogen sulfide. was there. Therefore, this equipment blows air in two or more stages, the first stage blows the amount necessary for separation of the separation target gas from the hot spring water, and after the second stage, the concentration of the separation target gas in the air in the apparatus is set to the explosion limit or toxicity. The danger is prevented or suppressed by diluting the air in the apparatus from the limit to a concentration that sets a sufficient safety factor.

  However, in the above device, heat is transferred from the hot spring water having a high temperature to the blowing air having a relatively low temperature as the separation target gas is released by the contact between the hot spring water and the blowing air, and the temperature of the blowing air is reduced. As a result, the humidity decreases and the amount of saturated water vapor increases, water vapor is supplied from the hot spring water to the blown air, and then the exhaust temperature is relatively relative to the outside air when contacting the outside air at the exhaust port. Since it is high, heat moves from the exhaust gas to the outside air, the exhaust gas temperature decreases, the amount of saturated water vapor decreases, the water vapor becomes supersaturated, liquefies and white smoke is generated, and it is necessary to suppress or prevent it. Therefore, the present apparatus has a moisture removing unit and removes moisture and lowers the exhaust temperature by taking in the secondary outside air, thereby preventing or suppressing the water vapor from being liquefied into white smoke or mist upon contact with the outside air.

  However, in the above device, when the water sprinkling unit, primary outside air intake unit, moisture reducing unit, secondary outside air intake unit and exhaust port are stacked vertically, the height of the device becomes large and the installation position is restricted, so that the surroundings are intimidating. It was necessary to suppress the machine height to damage the given landscape. Therefore, this apparatus expands the apparatus structure in the lateral direction to reduce the apparatus height.

  However, in the above-described apparatus, it is necessary to prevent stagnation in this portion because the gas to be separated, which is present in a very small amount in the treated hot spring water, is released and stays in the upper space where the treated hot spring water is stored. there were. Therefore, this apparatus exhausts the hot spring storage part and discharges the separation target gas from the upper part of the hot spring storage part.

  According to the present invention, gas separation, diffusion, and dilution can be performed safely and effectively from hot spring water, and it is possible to prevent a decrease in hot spring water temperature that occurs as a side effect, generation of hot spring scale, and generation of white smoke. In addition to being able to suppress, explosion of flammable gas can be prevented or suppressed, and the toxicity of toxic gas can be reduced. In addition, the structure is strong, the operation is simple, and the apparatus is easy to clean.

  In FIG. 1, reference numeral 1 denotes a hot spring water sprinkling section and a gas separation / diffusion section containing hot spring water containing a gas to be separated fed by a hot water feeding pipe 101 through a sprinkling pipe 107 and colliding with an impact plate 108 to be separated. The gas is separated and the separation target gas is diffused into the air in the apparatus. The primary air is blown to 1 through the primary outside air blow pipe of 103 by the blower of 102, and the air in the apparatus in which the concentration of the separation target gas is increased passes through the upper part of the water falling part of 5 and the air blowing direction is bent by 180 degrees to 2 of the moisture reducing part To rise. By this blowing, the separation target gas concentration of the air in the apparatus is lowered, and the separation of the separation target gas is promoted. 2 reduces the moisture in the air inside the apparatus and takes in the secondary outside air through the secondary outside air blowing pipe 104 by the blower 102 to dilute the concentration of the separation target gas in the apparatus air to a safe concentration and at the same time Bring the temperature closer to the outside temperature. 3 is a muffler that attenuates exhaust sound and shower sound in the tower, and a gas concentration detector 105 detects the concentration of gas to be separated in the apparatus air, performs operation management, and sends it to the exhaust port 4. 4 discharges the air in the apparatus to the atmosphere. On the other hand, the hot spring water separated in 1 falls into 5 falling portions. 5 receives the fall of the hot spring water from which the separation target gas has been separated by 1 and sends it to the 6 hot spring storage section. 6 stores hot spring water by hot water supply pipes 106 until hot water is distributed to a hot spring water use facility. 101 is a hot water supply pipe from the hot spring well to 1. Reference numeral 102 denotes a blower. Reference numeral 103 denotes a primary outside air blowing pipe which blows air to 1. Reference numeral 104 denotes a secondary outside air blowing pipe for blowing air to 2. Reference numeral 105 denotes a gas concentration detector. 106 is a hot water pipe to a hot spring water utilization facility. Reference numeral 107 is a watering pipe for sprinkling hot spring water. 108 isolate | separates gas by the impact from the hot spring water sprinkled with the impact version. A water level gauge 109 measures the water level of the hot spring water and manages the amount of water stored in the water tank. 110 is a control panel that manages the operation according to the gas concentration and the water level in the water tank. 111 is a hot spring well. 112 pumps hot spring water with a pump. Reference numeral 113 denotes a flow rate sensor for managing the hot spring supply amount. Reference numeral 114 denotes an intake pipe that discharges gas from above the six hot spring storage portions where gas remaining in the hot spring water is separated and retained.

  In order to reduce the height of the apparatus, do not stack vertically in the order of 1, 2, 3 and 4, but use two horizontal rows as shown in FIG. 1 after hot spring water sprinkling section and gas separation / diffusion section are blown vertically downward, the flow of air blown by 5 falling water section is bent 180 degrees, the blowing direction is changed vertically upward, and after passing 2, 90 degrees It is assumed that the air flow is such that the air passes through 3 and is bent 90 degrees and is exhausted to 4.

  It will be made clearer by giving examples of the gas separator for hot spring water according to the present invention. However, this invention is not limited at all by the following examples. The front view of FIG. 2 and the side view of FIG. 3 show an example in which the present invention is implemented as a methane gas separator for hot spring water. In the front view of FIG. 2, the positional relationship between the hot spring water sprinkling part 1 and the gas separation / diffusion part 1 and the moisture reduction part 2 and the positional relation between the primary outside air blowing pipe 103 and the secondary outside air blowing pipe 104 are not clear. This is shown in the side view of FIG. In this embodiment, hot water of a maximum of 150 liters per minute is sent into the apparatus through 101 hot water supply pipes, while a maximum of 8.5 cubic meters of outside air blown by a blower of 102 is half of the primary air of 103. The air is blown into the apparatus through the outside air blowing pipe. In the hot spring water sprinkling part and the gas separation / diffusion part, methane gas of 84 liters per minute is separated from the hot spring water, and is diluted to 1% volume concentration or less by mixing with 8.5 cubic meters of outside air. The hot spring water and the blown air are allowed to flow through the water falling part 5 and are divided into the hot spring water in which the methane gas is separated and the blown air containing the methane gas. The blown air containing methane gas rises to the moisture reducing part of 2 by bending the blowing direction 180 degrees above the 5 falling part. 2 removes moisture and blows 8.5 cubic meters of outside air through the secondary outside air blowing pipe 104 to dilute methane to 0.5% volume concentration or less and bring the temperature of the blowing air closer to the outside air temperature. Then, the sound is silenced so that no noise is generated at the muffler 3, and is discharged from the 4 outlets to the atmosphere while being measured and managed with a gas concentration detector 105 based on the 0.5 percent volume concentration. On the other hand, the hot spring water treated in 1 moves from 5 falling water parts to 6 hot spring storage parts and is sent to the use facility. 6 is stored until hot water is distributed to hot spring use facilities by 106 hot water distribution pipes. 101 is a hot water supply pipe from the hot spring well to 1. Reference numeral 102 denotes a blower. Reference numeral 103 denotes a primary outside air blowing pipe which takes in outside air by a blower 102 and blows air to the air. Reference numeral 104 denotes a secondary outside air blower pipe which takes in outside air by the blower 102 and blows it to the air 2. Reference numeral 105 denotes a gas concentration detector. 106 is a hot water pipe to a hot spring water utilization facility. Reference numeral 114 denotes an intake pipe which sucks air from the blower 102 and exhausts the gas remaining in the hot spring storage section 6.

It is a conceptual diagram of this invention. It is a front view of the implementation example of this invention. It is a side view of the implementation example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot spring water sprinkling part and gas separation / diffusion part 2 Moisture reduction part 3 Silencer part 4 Exhaust port 5 Water fall part 6 Hot spring storage part 101 Hot water supply pipe 102 Blower 103 Primary outside air ventilation pipe 104 Secondary outside air ventilation pipe 105 Gas concentration detector 106 Water distribution pipe 107 Sprinkling pipe 108 Impact plate 109 Water level gauge 110 Control panel 111 Hot spring well 112 Pump 113 Flow rate sensor 114 Intake pipe

Claims (3)

Gas separation apparatus for hot spring water, which has a function of separating and / or diffusing gas by watering or impact or both A gas separator for hot spring water according to claim 1, wherein the apparatus has a blower and blows air in one stage or blows in two or more stages. The gas separator for hot spring water according to claim 2, comprising a moisture reducing section or a staying gas discharge section of the hot spring storage section, or both.

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