JP2019013882A - Gas separator - Google Patents

Abstract

To provide a gas separator for hot spring water capable of separating a gas which is not treated to remain in the hot spring water after treatment by a conventional gas separator.SOLUTION: An objective gas separator comprises: an upper end-opened, bottomed and nearly cylindrical internal cylinder whose portion except a vicinity of at least lower end is disposed in a body tank; an external cylinder disposed in the same tank nearly coaxially with the internal cylinder; an inflow pipe for a liquid to be treated guiding the liquid in the internal cylinder; a core rod arranged to the axial center of the internal cylinder; and a spiral member wound around the core rod. In the separator, a bored flange-like partition plate is arranged to divide a space between an outer peripheral face of the external cylinder and an inner peripheral face of the body tank into the upper and lower parts down below; plural cylindrical bodies for secondary treatment which further separate the gas remaining in a primary treatment liquid gas-separated in the internal cylinder to flow down through the external cylinder are inserted in the partition plate; and an exhaust part of a separated gas and a taking-out port of a treatment water are provided. The separator generates a gyratory upflow in the internal cylinder and cylindrical bodies, and separates the gas from the treated liquid by centrifugal force of the gyratory upflow.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a gas separation device that removes combustible natural gas dissolved or mixed in hot spring water.

  Combustible gases such as methane may be dissolved or mixed in bubbles in hot spring water, and there is a risk of explosions caused by flammable natural gas in hot spring facilities, and hot spring raw water has traditionally been stored in hot water storage tanks. Natural gas once stored and separated naturally is discharged and removed from the upper part of the hot water storage tank, and only the liquid is taken out from the lower part of the hot water storage tank and used as hot spring water. There is a possibility that flammable natural gas may be mixed in the hot spring water after the treatment, and a method for separating the flammable natural gas more efficiently from the hot spring water has been demanded.

The inventor invented the gas separation device described in Patent Document 1 and obtained a patent as a gas separation device capable of effectively separating the combustible natural gas in the hot spring water.
The main point of the invention is that “a main body tank capable of containing liquid” described in [Claim 1] of [Claims]
At least a portion excluding the vicinity of the lower end thereof is disposed in the main body tank, and a bottomed substantially cylindrical inner cylinder having an open upper end;
An outer cylinder having an upper end higher than the upper end of the inner cylinder and having a gap between the lower end and the main body tank and having a larger diameter than the inner cylinder disposed in the main body tank substantially coaxially with the inner cylinder When,
An inflow pipe connected to the vicinity of the lower end of the inner cylinder and guiding the liquid to be processed into the inner cylinder;
A core rod disposed on a portion including at least the lower end of the inner cylinder on the axis of the inner cylinder, and the height position of the upper end of the core cylinder is the same as that of the core rod located in the middle portion of the inner cylinder. A spiral member wound around a core rod and disposed so that the outer periphery thereof is substantially in contact with the inner peripheral surface of the inner cylinder;
An exhaust port drilled above the inner cylinder in the main body tank;
A gas separation device comprising: a drainage port drilled at a position lower than the upper end of the inner cylinder on the side wall of the main body tank. "
It is.

Japanese Patent No. 5647755

By the invention of the above Patent Document 1,
“The gas separated by the centrifugal force of the swirling upward flow is discharged from the upper end opening of the inner cylinder and exhausted from the upper exhaust port, while the primary treatment liquid separated from the gas flows down in the outer cylinder, Since it is discharged after passing through the gap below the cylinder, it is avoided that the separated gas is caught in the liquid or dissolved again in the treated liquid after separation and discharged together.
Since the swirl upward flow is generated in the inner cylinder having a relatively small radius with respect to the main body tank, the centrifugal force applied to the liquid to be processed flowing into the apparatus at a predetermined flow rate is relatively large, and the efficiency of the centrifugal separation is increased. high.
In addition, since the primary treatment liquid scatters radially and collides with the outer cylinder and then flows down along the inner peripheral surface of the outer cylinder, it remains due to an increase in the area of the gas-liquid interface and due to the impact at the time of collision. Gas is released. With these actions, the gas separation device of the present invention achieves high gas separation efficiency while having a simple configuration that does not require any power other than flowing the liquid to be processed.
Further, the liquid to be treated flows through a substantially closed single spiral flow path formed by the inner cylinder, the core rod, and the spiral member, thereby generating a stable swirl upflow, and the swirl upflow is generated by the inner cylinder. The gas separation efficiency is maintained until reaching the upper end to achieve high gas separation efficiency. Further, even when the gas phase volume ratio of the liquid to be treated is high, the gas flowing into the substantially closed spiral channel flows together with the liquid and forms a stable swirling upward flow.
And the phenomenon where a water surface becomes high gradually toward the inner peripheral surface from the axial center of an inner cylinder occurs. As a result, not only the gas separated in the spiral flow path is released into the gas phase, but also the gas remaining in the liquid phase is further separated by centrifugation, and the gas phase from the gas-liquid interface whose area is increased is increased. Released into. Thereby, a higher gas separation efficiency is achieved. "
This has contributed to the gas separation of hot spring water in various hot spring areas.

However, the quality of the hot spring water varies from place to place, and in some areas, it is confirmed that there are hot spring waters that generate minute bubbles that are not before treatment after using the gas separation device described in Patent Document 1 above. It was. The minute bubbles contained methane, although the concentration was different depending on the region. The bubbles remain in the form of floating in the treated hot spring water, and it has been confirmed that the bubbles become large when adhered to the inner surface of the pipe for a long time, and the problem of the treatment of the bubbles has arisen.
The present invention has been made in view of the above problems, and can perform separation of natural gas remaining in the hot spring water after the treatment by a conventional gas separation device, and has a higher natural gas separation ability. Providing a device was an issue.

As a result of intensive studies, the present inventor has solved the above problems by the means described below.
[1] a main body tank (1) capable of containing a gas-containing liquid;
A bottomed, generally cylindrical inner cylinder (2) having an open upper end, at least a portion excluding the vicinity of the lower end thereof being disposed in the main body tank (1);
The upper end is disposed higher than the upper end of the inner cylinder (2), and the lower end of the inner cylinder (2) is spaced from the main body tank (1) so that the inner cylinder (2) is substantially coaxial with the inner cylinder (1). An outer cylinder (3) having a larger diameter than the inner cylinder (2) disposed in
An inflow pipe (2b) connected to the vicinity of the lower end of the inner cylinder (2) and introducing a liquid to be treated containing a gas into the inner cylinder (2);
A core rod (4) disposed on a portion including at least the lower end of the inner cylinder (2) on the axis of the inner cylinder (2), and the height position of the upper end of the core rod (4) is the inner cylinder A core rod (4) located in the middle of (2);
A spiral member (5) wound around the concentric rod (4) and disposed so that the outer periphery thereof is substantially in contact with the inner peripheral surface of the inner cylinder (2);
A perforated flange-shaped partition plate (12) that divides the gap provided between the main body tank (1) and the outer cylinder (3) vertically below;
A plurality of cylindrical bodies (7) whose lower portions are inserted into a plurality of locations of the partition plate (12) and are erected;
A short cylindrical body (7a) having an outer diameter shorter than the inner diameter of the cylindrical body (7) inserted at the upper end of the cylindrical body (7) with the upper portion protruding;
An exhaust port (8) drilled above the inner cylinder (2) in the main body tank (1);
A processing liquid outlet (9) drilled at a position lower than the upper end of the cylindrical body (7) on the side wall of the main body tank (1);
A drainage jacket (13) that is open only underneath to cover the treatment liquid outlet (9),
The cylindrical body (7) has an upper end positioned at an intermediate portion of the outer cylinder (3), a short spiral member (5 ') at the lower end, and a smaller inner diameter than the cylindrical body (7) at the upper end. A short cylindrical body (7a) having an outer diameter is mounted and provided via a fixture (7b) so that its upper end protrudes from the upper end of the cylindrical body (7). Gas separation device.
[2] The gas according to [1], further comprising a short tube type gas separation capacity adjusting member (11) fitted in a ring shape on an outer periphery of an upper end portion of the cylindrical body (7). Separation device.

  In the gas separation device according to the present invention, the gas separated by the centrifugal force of the swirling upward flow is discharged from the upper end opening of the inner cylinder and discharged from the upper exhaust port, while the primary treatment liquid separated from the gas Flow down through the outer cylinder, and further, a plurality of cylindrical bodies vertically installed by inserting a gap provided between the outer cylinder and the tank body into a perforated flange-shaped partition plate that divides the upper and lower parts vertically. Since the gas flows in and swirls and rises again, the gas remaining in the primary treatment liquid and the gas generated after the primary treatment are also separated by the centrifugal force of the swirl upflow, and the upper part protrudes from the upper end of the cylindrical body. It is discharged from the opening of a short cylindrical body having an outer diameter shorter than the inner diameter of the same cylindrical body inserted and discharged from the exhaust port. Then, after the secondary treatment, the treatment liquid flows down along the outer surface of the cylindrical body and is taken out from the treatment liquid outlet port covered with a drainage jacket that is open only below, so that the separated gas is introduced into the treatment liquid. It is possible to provide a gas separation device that has high gas separation efficiency and high safety while having a simple configuration that does not require any power other than flowing in the liquid to be treated without leaking from the outlet.

  In the inner cylinder, the liquid to be treated is swung by a substantially closed single spiral channel formed by a core rod and a spiral member, or by a spiral member provided at the lower end even in a cylindrical body. As a result, a more stable swirling upward flow is generated, and a phenomenon occurs in which the water surface gradually rises from the axis of each of the inner cylinder and the cylindrical body toward the inner peripheral surface, and is separated in the spiral flow path. Not only is the released gas released into the gas phase, but the gas remaining in the liquid phase is further separated by the centrifugal separation action, and is released into the gas phase from the gas-liquid interface whose area has been increased. Since the gas radiates from the opening of the inner cylinder and collides with the outer cylinder, gas is released also by impact at the time of collision, so that higher gas separation efficiency is achieved.

In addition, the cylindrical body is erected on a perforated flange-shaped partition plate that divides the gap between the main body tank and the outer cylinder to the upper limit, and the spiral member provided at the lower end of the cylindrical body is short. Because it is made up of materials, the processing liquid after the primary treatment can be sent into the cylindrical body without using other power, and it can be swirled gently and raised, and the cylindrical body is raised by the swirling upward flow As a result, bubbles remaining in the processing liquid are enlarged and easily released.
Further, a short cylindrical body having an outer diameter shorter than the inner diameter of the cylindrical body is inserted into the upper end of the cylindrical body via a fixture so that the upper end protrudes from the upper end of the cylindrical body. Therefore, bubbles of gas remaining in the processing liquid after the primary treatment are gathered in the center while expanding and rising due to the centrifugal separation action by the swirling upward flow in the cylindrical body of the processing liquid, and the bubbles gathered in the center are Since it is captured in a short cylindrical body disposed on the coaxial core in the cylindrical body so as to protrude from the upper end of the cylindrical body, it is possible to prevent air bubbles from overflowing from the upper end of the cylindrical body and mixing into the liquid to be processed. Can do.
And since the partition plate which divides the space between the main body tank and the outer cylinder vertically is provided below the space, the treatment liquid after the primary treatment and the liquid to be treated after the secondary treatment Can be prevented and only the treatment liquid after the secondary treatment can be taken out.
further

Further, according to the gas separation device of the present invention, the short tube type gas separation capacity adjusting member fitted in a ring shape on the outer periphery of the upper end portion of the cylindrical body can be provided. The flow rate can be adjusted so that the overflow of the next treatment liquid is suppressed and the gas separation ability corresponding to the volume ratio of the contained gas in the liquid to be treated is obtained.
In addition, by providing a plurality of gas separation capacity adjusting members, even in hot spring sources having different gas-liquid ratios, the gas separation capacity adjusting members are sequentially fitted on top of the cylindrical body on the spot to measure the residual gas amount. However, the gas content of the liquid to be treated can be easily adjusted to an appropriate value by adjusting the number of the devices installed, and a convenient gas separation device suitable for the hot spring water in the hot spring area where the device is installed can be provided.

The perspective view for description of one Example of the gas separation apparatus concerning this invention Schematic diagram of the internal configuration of the gas separation device according to the present invention The schematic diagram of the internal structure of the other Example of the gas separation apparatus concerning this invention Side view of main part of inner cylinder, core rod, and spiral member The perspective view which shows the attachment state of the gas separation capacity adjustment member to a secondary treatment cylindrical body Explanatory drawing of mounting method of gas separation capacity adjustment member Explanatory drawing of the flow of the secondary treatment liquid when the gas separation capacity adjustment member is installed

Two modes for carrying out the gas separation device of the present invention will be described with reference to the drawings of the embodiments.
FIG. 1 is a perspective view for explaining one embodiment of a gas separation apparatus according to the present invention, FIG. 2 is a schematic diagram of the internal configuration of the gas separation apparatus according to the present invention, and FIG. FIG. 4 is a cross-sectional side view of the main part of the inner cylinder, core rod, and helical member, and FIG. 5 is the attachment of the gas separation capacity adjusting member to the secondary treatment cylinder. It is a perspective view which shows a state.
In the figure, 1 is a main body tank, 2 is an inner cylinder, 2a is a bottom plate, 2b is a liquid inlet pipe, 3 is an outer cylinder, 4 is a core rod, 4a is a small hole, 4b is a hollow portion, 4c is a gas discharge pipe, 4d is a valve, 5 is a spiral member, 5 'is a short spiral member, 6 is a spiral flow path, 7 is a cylindrical body, 7a is a short cylindrical body, 7b is a mounting member, 8 is an exhaust port, 9 is The treatment liquid outlet 10 is a net, 11 is a gas separation capacity adjusting member, 12 is a partition plate, and 13 is a drainage jacket.

As shown in FIGS. 1 and 2, the first embodiment of the gas separation apparatus of the present invention is as follows.
A main body tank 1 capable of containing a liquid, a bottomed substantially cylindrical inner cylinder 2 having an open upper end, at least a portion excluding the vicinity of the lower end of the main body tank 1, and an upper end of the inner cylinder 2. An outer cylinder having a diameter higher than that of the inner cylinder 2 disposed in the main body tank 1 so as to be arranged higher than the upper end and having a gap between the lower end of the main body tank 1 and the inner cylinder 2. 3 is connected to the vicinity of the lower end of the inner cylinder 2, and is disposed in a portion including at least the lower end of the inner cylinder 2 on the axial center of the inner cylinder 2 and an inflow pipe 2 b for introducing the liquid to be treated into the inner cylinder 2. The core rod 4 is wound around the core rod 4 and the core rod 4 positioned at the middle portion of the inner cylinder 2, and the outer periphery of the core rod 4 is the inner cylinder 2. A space between the inner cylinder 2 and the outer cylinder 3 is formed in a space provided between the main body tank 1 and the outer cylinder 3 by the spiral member 5 disposed so as to be substantially in contact with the peripheral surface. A plurality of cylindrical bodies 7 disposed for secondary treatment of the liquid to be treated, an exhaust port 8 formed above the inner cylinder 2 in the main body tank 1, and a cylindrical body on the side wall of the main body tank 1 7 is provided between the main body tank 1 and the outer cylinder 3, a treatment liquid outlet 9 that is drilled at a position lower than the upper end of 7, a drain jacket 13 that is open only below the processing liquid outlet 9. In addition, a perforated flange-shaped partition plate 12 is provided to divide the air gap vertically below.
In the present embodiment, the cylindrical body 7 has an upper end positioned at the middle part of the outer cylinder 3, a lower end provided with a short spiral member 5 ′, and an outer end shorter than the inner diameter of the cylindrical body 7 at the upper end. A short cylindrical body 7 a having a diameter is inserted into the upper end of the cylindrical body 7 via a fixture so that the upper end of the cylindrical body 7 a protrudes from the upper end of the cylindrical body 7.
The main body tank 1 is a substantially cylindrical container whose upper and lower ends are curved. However, the shape of the main body tank 1 is not particularly limited as long as it can accommodate liquid, and the upper portion is an opening, and the opening is sealed with a lid. It is also preferable to make maintenance in the tank easy, such as removal of deposits such as hot spring flowers adhering to the main body tank 1.

The inner cylinder 2 is a substantially cylindrical member having a substantially vertical axis, and its upper end is opened and its lower end is sealed by a bottom plate 2a. An inflow pipe 2b through which the liquid to be processed flows into the gas separation device is connected to the peripheral wall near the lower end of the inner cylinder 2, and the liquid to be processed is sent into the inner cylinder 2 through the inflow pipe 2b. .
In addition, the inflow pipe 2b is arranged in the connecting portion so as to be tangential to the inner peripheral surface of the inner cylinder 2 so that the in-process liquid to flow in swirls along the inner peripheral surface of the inner cylinder 2, and the spiral member 5 It is preferable that the swirl upward flow can be generated without applying an excessive load to the sway.

A core rod 4 is disposed on the axial center of the inner cylinder 2. The core rod 4 is a substantially cylindrical member whose upper end is sealed, and the upper end of the core rod is positioned at the height of the intermediate portion of the inner cylinder 2, and the lower end thereof penetrates the bottom plate 2 a of the inner cylinder 2. As a result, the main body tank 1 is reached.
As shown in FIG. 4, the spiral member 5 is arranged on the core rod 4 so that the outer periphery of the core rod 4 is substantially in contact with the inner peripheral surface of the inner tube 2 from the vicinity of the lower end of the inner tube 2 to the upper end of the core rod 4. The liquid to be treated that has been wound and has flowed in from the inflow pipe 2b is sequentially guided to the spiral flow path 6 formed by the inner cylinder 2, the core rod 4, and the spiral member 5 to generate a swirling upward flow. .
The swirling upward flow can be generated, for example, by simply connecting the inflow pipe 2b in the tangential direction of the inner peripheral surface of the inner cylinder 2 at one or more places in the lower part of the inner cylinder 2, but the gas phase in the liquid to be treated When the volume ratio is high, pulsating flow or turbulent flow is generated, and there is a difficulty that is not stable. On the other hand, the gas separation device of the present invention guides the liquid to be treated to the substantially closed single spiral flow path 6 and rotates it several times, so even when the gas phase volume ratio of the liquid to be treated is high. A stable swirling upward flow is generated, and the swirling upward flow is stably maintained until it exits the spiral flow path 6 and reaches the upper end of the inner cylinder 2. As long as the spiral member 5 does not affect the generation and maintenance of the swirling upward flow, there may be a slight gap between the inner cylinder 2 or the core rod 4, and there is a slight gap between the spiral member 5 and the core rod 4. In some cases, the gas separated in the spiral flow path 6 and collected in the axial center of the inner cylinder 2 by centrifugal force is quickly raised and discharged.

   Although the length of the core rod 4 is not particularly limited, it is preferable that the height position of the upper end of the core rod 4 is located in the middle portion of the inner cylinder 2. This is because the swirl upward flow that exits the spiral flow path 6 rises while swirling the portion from the upper end of the core rod 4 to the upper end of the inner cylinder 2, thereby causing a sudden pressure change at the lower part of the swirl upward flow. As the pressure is reduced, the gas in the treated water foams, and at the upper part of the swirling upward flow, the water surface gradually increases from the axial center of the inner cylinder 2 toward the inner peripheral surface of the inner cylinder 2, and the gas-liquid interface This phenomenon not only promotes the release of the gas foamed and separated in the spiral flow path 6 into the gas phase, but also facilitates separation of the gas remaining in the liquid phase. This is because an increase in the amount of gas released into the gas phase is expected.

  A plurality of small holes 4 a are formed in the peripheral wall of the core rod 4 to communicate the inside and the outside. The small hole 4a is a hole for sucking a part of the gas collected in the vicinity of the axial center of the inner cylinder 2 in the spiral flow path 6 into the hollow portion 4b of the core rod 4, and the gas entering from the small hole 4a is Through the hollow portion 4b, the gas is led to a gas discharge pipe 4c communicating with the hollow portion 4b and discharged outside the apparatus. When a part of the gas is sucked into and discharged from the hollow portion 4b, the volume of the gas phase occupying the liquid to be processed decreases, so that the swirl upward flow after the small hole 4a is stabilized. The effect of the stabilization is remarkable for a liquid to be treated having a high initial gas phase volume ratio. Conversely, when processing a liquid to be processed having a low gas phase volume ratio, gas is sucked from the small holes 4a. The valve 4d may be closed so that it does not occur.

The outer cylinder 3 is a cylindrical member arranged substantially coaxially with the inner cylinder 2, and is arranged in the main body tank 1 by a support bar 1 a protruding from the outer peripheral surface and connected to the inner wall of the main body tank 1. It is installed.
The upper end of the outer cylinder 3 is open and is arranged at a position higher than the upper end of the inner cylinder 2.
When the swirling upward flow reaches the upper end of the inner cylinder 2, the primary treatment liquid is scattered radially by the centrifugal force, and collides with the inner peripheral surface of the outer cylinder 3 and flows down. During the scattering, collision, and flow-down, the area of the gas-liquid interface increases, so that the gas remaining in the primary treatment liquid is further separated and removed. The impact when colliding with the inner peripheral surface of the outer cylinder 3 also promotes gas separation.
The gas separated by these actions is discharged from the upper end opening of the outer cylinder 3 and exhausted from the exhaust port 8 formed above the main body tank 1.
A substantially cylindrical net 10 is attached to the outer cylinder 3 over the entire inner peripheral surface of a part below the portion where the primary treatment liquid scattered from the upper opening of the inner cylinder 2 collides. The net 10 has a function of increasing the gas-liquid interface area of the primary treatment liquid that collides with the inner peripheral surface of the outer cylinder 3 and flows down, and gently guides the primary treatment liquid to the water surface.
The primary processing liquid that has collided with the inner peripheral surface of the outer cylinder 3 flows down between the inner peripheral surface of the outer cylinder 3 and the outer peripheral surface of the inner cylinder 2, and from the lower end opening, the outer peripheral surface of the outer cylinder 3 and the main body tank 1 Are guided to the lower end portions of a plurality of secondary processing cylinders 7 provided between the inner peripheral surfaces of the secondary processing cylindrical bodies 7.

Between the inner peripheral surface of the main body tank 1 and the outer peripheral surface of the outer cylinder 3, fine bubbles remain in the primary processing liquid flowing down between the outer peripheral surface of the inner cylinder 2 and the inner peripheral surface of the outer cylinder 3. A plurality of cylindrical bodies 7 arranged for separating gases are provided, and a processing liquid outlet 9 for taking out the processing liquid is provided at a position lower than the upper end of the cylindrical body 7 on the side wall of the main body tank 1.
The cylindrical body 7 is provided with a perforated flange-shaped partition plate 12 disposed below the gap in order to divide the gap between the inner circumferential surface of the main body tank 1 and the outer circumferential surface of the outer cylinder 3 vertically. The lower part of the cylindrical body 7 is inserted and erected.
The cylindrical body 7 has an upper end positioned at an intermediate portion of the outer cylinder 3, a short spiral member 5 'for generating a flow in which the processing liquid gently swirls and rises at the lower end, and a cylinder at the upper end. A short cylindrical body 7 a having an outer diameter shorter than the inner diameter of the body 7 is attached by a short cylindrical body attaching member 7 b so that the upper end portion protrudes from the upper end of the cylindrical body 7.
In addition, in order to divide the gap between the inner peripheral surface of the main body tank 1 and the outer peripheral surface of the outer cylinder 3 into upper and lower portions, a perforated flange-shaped partition plate 12 disposed below the gap is provided after the primary treatment. This is for introducing the treatment liquid into the cylindrical body 7, and prevents the liquid to be treated after the primary treatment from being mixed with the treatment liquid after the secondary treatment. Therefore, the liquid to be processed after the primary treatment flowing down between the outer peripheral surface of the inner cylinder 2 and the inner peripheral surface of the outer cylinder 3 is sent to the lower side of the outer cylinder 3 and then rises by the partition plate 12. It is blocked and introduced into the open part, that is, the lower end of the cylindrical body 7 and subjected to secondary processing.
The processing liquid swirled and raised in the inner cylinder 2 and subjected to the primary treatment flows between the inner peripheral surface of the outer cylinder 3 and the outer peripheral surface of the inner cylinder 2, and is prevented from rising by the partition plate 12. Guided by a spiral member 5 ′ attached to the lower end of the cylindrical body 7 inserted in the plate 12, the cylindrical body 7 is gently swiveled to perform secondary processing.
The gas separated from the primary treatment liquid by the secondary treatment is discharged from the opening in the upper part of the short cylindrical body 7a through the exhaust port 8, and the secondary treated treatment liquid is taken out from the treatment liquid outlet 9 It has become. The treatment liquid outlet 9 is covered by a drainage jacket 13 that is open only at the lower side to prevent the combustible gas separated by the primary treatment and the secondary treatment from leaking out of the treatment liquid outlet 9. Yes. As a result, even if a problem such as ignition occurs in the combustible gas at the exhaust port 8, the processing liquid outlet 9 is not affected at all, so that the liquid to be processed can be continuously supplied and separated. it can.
In the present invention, the cylindrical body 7 is configured to be shorter than the outer cylinder 3, so that the water surface position of the cylindrical body 7 is lower than the water surface position of the outer cylinder 3, and the treatment liquid that has flowed down through the primary treatment due to the water level difference. It is possible to move to the cylindrical body 7 without applying any other power.
Further, the spiral member 5 ′ attached in the cylindrical body 7 is for obtaining rotation by the movement of the flowed processing liquid and turning the processing liquid, so that the helical member attached in the inner cylinder 2. The one with less resistance than 5 is attached.
Furthermore, since the treatment liquid after the primary treatment collects bubbles in the treatment liquid in the center by swirling, it is preferable to adjust the swirl speed to an optimum depending on the concentration of residual gas in the treatment liquid after the primary treatment. .
The processing liquid outlet 9 has a function of not only taking out the processing liquid from the main body tank 1 but also maintaining the water level in the main body tank 1. As shown in FIG. 2, since the treatment liquid outlet 9 is provided at a position lower than the upper end of the cylindrical body 7, the water level in the main body tank 1 excluding the inside of the inner cylinder 2 is lower than the upper end of the inner cylinder 2. So that the gas separation action described above functions effectively.

As shown in FIGS. 3 and 5, the second embodiment of the gas separation device of the present invention is a portion in which the drainage jacket is provided in the space between the outer peripheral surface of the outer cylinder 3 and the inner peripheral surface of the main body tank 1. Except for, a plurality of cylindrical bodies are concentrically arranged in two rows.
This is because in the first embodiment, the number of cylindrical bodies 7 erected in the space between the outer peripheral surface of the outer cylinder 3 and the inner peripheral surface of the main body tank 1 via the partition plate 12 is increased, and gas separation with higher accuracy is achieved. It is a structure that makes possible.
For example, the gas separation device of the first embodiment is effective for use in hot springs where it is difficult to treat flammable natural gas dissolved or mixed in hot spring water to a specified value or less.
In such hot spring resorts, the amount and dissolved state of the gas remaining in the treatment liquid after the primary treatment varies depending on the flow rate and viscosity of the hot spring water. In order to separate this residual gas, The swirling speed and separation status of the secondary treatment liquid to be treated by the cylindrical body 7 are different for each hot spring area.
In this embodiment, the gas can be reliably separated in accordance with the components of the hot spring water in each hot spring area.
That is, in the gas separation apparatus of the present embodiment, as shown in FIG. 5, a short tube type gas separation ability adjusting member 11 is fitted in a ring shape on the outer periphery of the upper end portion of the cylindrical body 7.
By fitting the gas separation capacity adjusting member 11 on the outer periphery of the upper end portion of the cylindrical body 7, overflow of the secondary treatment liquid from the upper part of the cylindrical body 7 can be suppressed, and the swirling upward flow in the cylindrical body 7 can be suppressed. It is possible to suppress the generation and adjust the gas separation function.
FIG. 6 is an explanatory diagram of a method for mounting the gas separation capacity adjusting member.
The gas separation capacity adjusting member 11 is formed in a ring-like short tube shape and is fitted on the outer periphery of the upper end portion of the cylindrical body 7 (a). The gas separation capacity adjusting member 11 has a cylindrical body 7 so that the upper end thereof is positioned above the upper end of the short cylindrical body 7a, that is, the secondary treatment liquid does not overflow from the upper part of the cylindrical body 7. It is attached to the upper end of the.
FIG. 7 is an explanatory diagram of the flow of the secondary treatment liquid when the gas separation capacity adjusting member is attached.
(A) is a case where the gas separation capacity adjusting member 11 is not attached to the cylindrical body 7, and the secondary treatment liquid from which the residual gas is separated by the cylindrical body 7 is the same as that of the cylindrical body 7 as indicated by an arrow α. It overflows from the upper end and flows into the main body tank 1, and then the processing liquid is led out from the processing liquid outlet 9 provided in the main body tank 1.
On the other hand, when the gas separation capacity adjusting member 11 is attached to the upper end portion of the cylindrical body 7, as shown in (b), the secondary processing liquid that is about to overflow from the upper end section of the cylindrical body 7 is adjusted to adjust the gas separation capacity. It does not flow to the main body tank 1 because of being obstructed by the member 11. Only the residual gas collected in the short cylindrical body 7a is discharged from the discharge port.
Thus, since the gas separation capacity adjusting member 11 is configured to be arbitrarily removable, the partition plate 12 can be adjusted by adjusting the number of cylindrical bodies 7 to which the gas separation capacity adjusting member 11 is attached. The amount of treated water flowing into the upper area of the partition can be adjusted, the flow rate of the swirling upward flow of the other cylindrical body 7 can be changed to enable optimum gas separation, and the amount of residual gas in the secondary treatment liquid differs It is configured to accommodate any hot spring water.
Therefore, the gas separation apparatus of the second embodiment is installed on site (hot spring area), and the gas separation capacity adjusting member 11 is sequentially attached to the upper part of the cylindrical body 7 to adjust the number of installations while measuring the residual gas amount. For example, a gas splitter suitable for the hot spring area can be easily and efficiently constructed.

  In the second embodiment, the case where the cylindrical body 7 is arranged in two rows in the space between the outer peripheral surface of the outer cylinder 3 and the inner peripheral surface of the main body tank 1 has been described. Thus, even when the cylindrical bodies 7 are arranged in a line in the space between the outer peripheral surface of the outer cylinder 3 and the inner peripheral surface of the main body tank 1, the gas separation capability adjusting member 11 is attached to adjust the gas separation capability. be able to.

Table 1 shows the results of comparative experiments on gas separation performance in a plurality of hot spring areas.

The gas separator according to the present invention described in the first embodiment (hereinafter referred to as type 2) and the gas separator according to the present invention described in the second embodiment (hereinafter referred to as type 3) are conventionally used. The gas separation apparatus (hereinafter referred to as type 1) was subjected to a comparative experiment of gas separation performance in a plurality of hot springs. The results are shown in Table 1.
In addition, since the comparison experiment was performed in each hot spring area, all three types of experiments could not be performed depending on the environment.
Although only the R4 well was able to compare the separation performance of all three types of gas separation devices, it was confirmed that the separation function was improved from Type 1 to Type 3.
In the type 2 separator, the residual gas in the type 1 gas separator is reduced to less than half in any hot spring, and the remaining allowable standard value is 2500 ppm or lower except for the TA hot spring. became. Considering the result of the R4 well, it is considered that the residual gas amount can be reduced to a reference value or less by using a type 3 separator in TA hot spring.
The hot spring water of H hot spring and M hot spring dissolved methane and carbon monoxide or mixed as bubbles. However, the residual methane concentration was lower than the default value by the type 2 gas separator, and carbon monoxide. The effect was almost zero. The NO hot spring is a carbonated spring containing carbon dioxide gas, but the residual flow rate could be reduced to zero by the type 2 gas separator.
Furthermore, in the AJ hot spring, when a type 3 gas separator was used, the residual methane concentration was as low as 2 ppm.

  INDUSTRIAL APPLICABILITY The present invention can be used for a gas separation process for removing flammable natural gas dissolved or mixed in hot spring water, has a higher natural gas separation capacity than conventional gas separation devices, and has sufficiently separated gas so far. It can also be applied to hot spring waters of various properties that were difficult to treat.

1: Main body tank 2: Inner cylinder 2a: Bottom plate 2b: Processed liquid inflow pipe 3: Outer cylinder 4: Core rod 4a: Small hole 4b: Hollow part 4c: Gas discharge pipe 4d: Valve 5, 5 ': Spiral member 6: Spiral flow path 7: Cylindrical body 7a: Short cylindrical body 7b: Short cylindrical body mounting member 8: Exhaust port 9: Treatment liquid outlet 10: Reticulated material 11: Gas separation capacity adjusting member 12: Partition plate 13 : Drainage jacket

Claims (2)

A main body tank (1) capable of containing a liquid containing gas;
A bottomed, generally cylindrical inner cylinder (2) having an open upper end, at least a portion excluding the vicinity of the lower end thereof being disposed in the main body tank (1);
The upper end is disposed higher than the upper end of the inner cylinder (2), and the lower end of the inner cylinder (2) is spaced from the main body tank (1) so that the inner cylinder (2) is substantially coaxial with the inner cylinder (1). An outer cylinder (3) having a larger diameter than the inner cylinder (2) disposed in
An inflow pipe (2b) connected to the vicinity of the lower end of the inner cylinder (2) and introducing a liquid to be treated containing a gas into the inner cylinder (2);
A core rod (4) disposed on a portion including at least the lower end of the inner cylinder (2) on the axis of the inner cylinder (2), and the height position of the upper end of the core rod (4) is the inner cylinder A core rod (4) located in the middle of (2);
A spiral member (5) wound around the concentric rod (4) and disposed so that the outer periphery thereof is substantially in contact with the inner peripheral surface of the inner cylinder (2);
A perforated flange-shaped partition plate (12) that divides the gap provided between the main body tank (1) and the outer cylinder (3) vertically below;
A plurality of cylindrical bodies (7) whose lower portions are inserted into a plurality of locations of the partition plate (12) and are erected;
A short cylindrical body (7a) having an outer diameter shorter than the inner diameter of the cylindrical body (7) inserted at the upper end of the cylindrical body (7) with the upper portion protruding;
An exhaust port (8) drilled above the inner cylinder (2) in the main body tank (1);
A processing liquid outlet (9) drilled at a position lower than the upper end of the cylindrical body (7) on the side wall of the main body tank (1);
A drainage jacket (13) that is open only underneath to cover the treatment liquid outlet (9),
The cylindrical body (7) has an upper end positioned at an intermediate portion of the outer cylinder (3), a short spiral member (5 ') at the lower end, and a smaller inner diameter than the cylindrical body (7) at the upper end. A short cylindrical body (7a) having an outer diameter is mounted and provided via a fixture (7b) so that its upper end protrudes from the upper end of the cylindrical body (7). Gas separation device. The gas separation device according to claim 1, further comprising a short tube type gas separation capacity adjusting member (11) fitted in a ring shape on the outer periphery of the upper end of the cylindrical body (7).

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