JPH1077952A - Extraction method of magma energy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the taking out method of an energy from magma as efficiently as possible. SOLUTION: A heat resistant heat absorptive vessel 23 is inserted in a crater 21 of the magma 22 and a fluid 29 is poured in from the fluid pouring port 24 of its one end and a fluid 29 heated by the magma 22 is extracted from the fluid extraction port 25 of its other end and the energy is extracted from the extracted fluid 29. Meantime, the outer periphery of the heat absorption vessel 23 is surrounded by a cooling vessel 26 with heat resistance and also made of a porous material and the cooling water 30 poured in the cooling vessel 26 is spouted as a steam from the cooling vessel 26 to the outside and a cooled temperature gradient layer 28 of magma 22 is formed on the outer periphery of the cooling vessel 26 by an evaporation heat at that time and the energy is extracted while protecting the melting of the heat absorption vessel 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for extracting magma energy for efficiently extracting energy from volcanic magma.

[0002]

2. Description of the Related Art As shown in FIG. 4, a general volcanic activity consists of a peridotite plate 13 and a basalt 14,
When submerged below the continental crust 10, the water carried from the sea 11 to the depth of the mantle 12 dissolves the surrounding mantle 12, and the melting temperature of the rock decreases due to the pressure drop due to the rise of mantle material due to mantle convection. To form the magma 22. This is the magma source 15, and the magma 22 generated here is stored in the magma chamber 16, transported to near the ground surface, and erupted to become the volcano 17.

Various methods for extracting energy from the magma 22 of the volcano 17 have been attempted in the past.
The first is a direct extraction method in which metal is directly inserted into the crater of the volcano 17 to extract energy, and the second is a method for directly extracting energy shown in FIG.
In this method, the crater of the volcano 17 is covered with a cover 18, water is injected from a water inlet 19 into the crater, and steam is extracted from a steam outlet 20.

[0004]

In the first direct removal method, the metal is dissolved by high-temperature magma,
Extracting energy is troublesome and has not yet been put to practical use. In the second indirect extraction method, energy extraction efficiency is not good for equipment costs.

An object of the present invention is to provide a method for extracting energy from magma as efficiently as possible.

[0006]

According to the present invention, a heat absorbing container 23 having heat resistance is inserted into a crater 21 of a magma 22, and a fluid 29 for extracting energy is injected from a fluid inlet 24 at one end of the heat absorbing container 23. And the fluid outlet 2 at the other end.
5 to extract the energy extraction fluid 29 which has become high temperature by the magma 22, and extract the extracted energy extraction fluid 29.
Extract energy from At this time, the outer periphery of the heat absorbing container 23 has heat resistance and is surrounded by a cooling container 26 made of a porous material, and the cooling water 30 injected into the cooling container 26 is ejected from the cooling container 26 to the outside as water vapor. Then, a temperature gradient layer 28 of the cooled magma 22 is formed on the outer periphery of the cooling vessel 26 by the heat of vaporization at that time, and the energy is taken out while protecting the melting of the heat absorbing vessel 23 by the magma energy extracting method. is there.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 1 showing the first embodiment, a volcano 1
It is assumed that a high-temperature magma 22 is ejected to the crater 21 in a liquid state. For example, a U-shaped heat absorbing container 23 is inserted from the crater 21 of the magma 22. The heat absorbing container 23 is preferably made of a heat-resistant ceramic or the like. An energy extraction fluid 29 is injected from a fluid injection port 24 at one end of the heat absorbing container 23, and the energy extraction fluid 29 heated by the magma 22 is extracted from the fluid extraction port 25 at the other end, and the extracted energy is extracted. Extraction fluid 2
Extract energy from 9.

In this case, since the magma 22 is extremely hot, the heat absorbing container 23 may be melted. Therefore, the outer periphery of the heat absorbing container 23 is surrounded by a double cooling container 26. The cooling container 26 has heat resistance and is made of a porous material. Then, cooling water 30 is injected from a cooling water injection port 27 of the cooling container 26.
Then, the cooling water 30 is ejected as steam from the cooling container 26 to the outside, and the vaporization heat at that time causes the cooling container 26
A temperature gradient layer 28 of the magma 22 cooled is formed on the outer periphery of the magma 22. This prevents the heat absorbing container 23 from dissolving, prevents the energy extracting fluid 29 injected from the fluid inlet 24 from evaporating, and allows the high-temperature energy extracting fluid 29 to be efficiently discharged from the fluid outlet 25. Take out well.

Next, in FIG. 2 showing the second embodiment, FIG.
Is a structure in which the heat absorbing container 23 also serves as the cooling container 26, and the heat absorbing container 23 has heat resistance,
It is made of a porous material. The fluid 29 for extracting energy and the cooling water 30 from the fluid inlet 24 of the heat absorbing container 23.
, For example, a cooling water 30 is injected. Then
The cooling water 30 is ejected as steam from the heat absorbing container 23 to the outside, and the heat of vaporization at that time forms a cooled temperature gradient layer 28 of the magma 22 on the outer periphery of the heat absorbing container 23. This prevents the heat absorbing container 23 from dissolving, and of the cooling water 30 injected from the heat absorbing container 23, the high-temperature cooling water 3 extracted from the fluid outlet 25.
0 is efficiently taken out from the fluid outlet 25 and used as an energy source.

Next, FIG. 3 showing a third embodiment shows an example in which a heat absorbing container 23 and a cooling container 26 are used as double bottom containers. That is, in FIGS. 1 and 2, the container is tubular, but in FIG. 3, the container is a pot-shaped container. The heat absorbing container 23 is cooled by heat of vaporization when steam is blown out from the cooling container 26 to protect the heat absorbing container 23, and the heat absorbing container 23
The energy extraction fluid 29 injected from the fluid injection port 24 in the inside is extracted from the fluid extraction port 25 as a high-temperature liquid or a high-temperature gas, and the energy is extracted in the same manner as in the previous embodiment.

In FIG. 1, FIG. 2 and FIG. 3, the heat absorbing container 23 and the cooling container 26 are supported by a tower 31 provided in the crater 21. To prevent the melting of the tower 31, cooling water 30 is always applied. And cool.

[0012]

【The invention's effect】

(1) In the present invention, a heat-absorbing container 23 having heat resistance is inserted into a crater 21 of a magma 22, a fluid 29 for taking out energy is injected from a fluid inlet 24 at one end of the heat-absorbing container 23, Since the energy extraction fluid 29 that has been heated by the magma 22 is extracted from the fluid extraction port 25, energy can be efficiently extracted from the extracted energy extraction fluid 29.

(2) The outer periphery of the heat absorbing container 23 has heat resistance and is surrounded by a cooling container 26 made of a porous material, and the cooling water 30 injected into the cooling container 26 is cooled by the cooling container 2.
6 is ejected as steam from the outside to the outside, and the heat of vaporization at that time forms a cooled temperature gradient layer 28 of the magma 22 on the outer periphery of the cooling vessel 26, so that the heat absorbing vessel 23 is melted by the high-temperature magma 22. It is protected from energy and can continuously extract energy.

(3) The heat absorbing container 23 has heat resistance and is made of a porous material, and has a structure that also serves as the cooling container 26. Therefore, one fluid that also serves as the energy extracting fluid 29 and the cooling water 30 is used. Thus, cooling and energy extraction can be performed.

(4) The outer periphery of the pot-shaped heat absorbing container 23 has heat resistance and is surrounded by a pot-shaped cooling container 26 made of a porous material.
Is ejected from the cooling vessel 26 as steam to the outside,
Since the temperature gradient layer 28 in which the magma 22 is cooled is formed on the outer periphery of the cooling container 26 by the heat of vaporization at that time, the cooling effect and the heat conversion efficiency are further improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first embodiment of a method for extracting magma energy according to the present invention.

FIG. 2 is an explanatory view showing a second embodiment of the method for extracting magma energy according to the present invention.

FIG. 3 is an explanatory view showing a third embodiment of a method for extracting magma energy according to the present invention.

FIG. 4 is a diagram illustrating the principle of generation of magma 22 and a conventional energy extraction method.

[Explanation of symbols]

10 continental crust, 11 sea, 12 mantle, 13 peridotite plate, 14 basalts, 15 magma source, 16 magma chamber, 17 volcano, 18 cover
19 ... water inlet, 20 ... steam outlet, 21 ... crater, 22
... magma, 23 ... endothermic container, 24 ... fluid inlet, 25 ...
Fluid outlet, 26 ... Cooling container, 27 ... Cooling water inlet,
28: temperature gradient layer, 29: fluid for extracting energy, 3
0 ... cooling water, 31 ... tower.

Claims (4)

[Claims] 1. A heat-absorbing container 23 having heat resistance is inserted into a crater 21 of a magma 22, an energy extracting fluid 29 is injected from a fluid inlet 24 at one end of the heat absorbing container 23, and a fluid is extracted from the other end. A method for extracting magma energy, comprising extracting an energy extraction fluid 29 having a high temperature with the magma 22 from the port 25, and extracting energy from the extracted energy extraction fluid 29. 2. An outer periphery of the heat absorbing container 23 having heat resistance and being surrounded by a cooling container 26 made of a porous material,
The cooling water 30 injected into the cooling vessel 26 is ejected as steam from the cooling vessel 26 to the outside, and the heat of vaporization at that time forms a cooled temperature gradient layer 28 of the magma 22 on the outer periphery of the cooling vessel 26. 2. The method for extracting magma energy according to claim 1, wherein energy is extracted while protecting the melting of the heat absorbing container 23. 3. The heat absorbing container 23 has heat resistance and is made of a porous material and has a structure that also serves as a cooling container 26.
By injecting the fluid 30 which also serves as the cooling water 30,
The fluid 30 is ejected from the heat absorbing container 23 as steam to the outside, and the heat of vaporization at that time forms a cooled temperature gradient layer 28 of the magma 22 around the heat absorbing container 23 to protect the heat absorbing container 23 from melting. 2. The method for extracting magma energy according to claim 1, wherein energy is extracted from the extracted high-temperature fluid 30 while performing the extraction. 4. A pot-shaped cooling vessel 2 made of a porous material having heat resistance around the periphery of the pot-shaped heat absorbing vessel 23.
6, the cooling water 30 injected into the cooling vessel 26 is jetted out of the cooling vessel 26 to the outside as water vapor, and the heat of vaporization at that time causes the cooled temperature gradient layer of the magma 22 to be formed on the outer periphery of the cooling vessel 26. 2. The method for extracting magma energy according to claim 1, wherein the energy is extracted while protecting the melting of the heat absorbing container by forming the heat absorbing container.