JP2005320416A - Manufacturing apparatus and process of mixed brown's gas - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a process for manufacturing a homogeneously mixed mixed Brown's gas. <P>SOLUTION: Manufacturing apparatus 10 involves Brown's gas feed means 13, mixing vessel 11 capable of containing volatile liquid organic compound 17 in it and mixed Brown's gas discharge means 14. Partition 12 is installed inside of the mixing vessel in a state to be submerged in the volatile liquid organic compound. The partition has fine holes for ventilation with a diameter small enough not to allow bubbles to go through. On the surface of the bottom side of the partition, an aggregate of independent bubbles is formed and the aggregate turns to be a merged body of the bubbles as Brown's gas bubbles are fed. The merged body is collapsed by itself and becomes larger and passes through the fine holes for ventilation of the partition. Fine bubble 18f is formed on the surface of the top side of the partition. The manufacturing process comprises forming a merged body of bubbles, collapsing it by itself to form a larger bubble at the partition, passing the bubble through the fine holes for ventilation of the partition and collecting the liberated mixed gas. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mixed brown gas manufacturing apparatus and manufacturing method. According to the present invention, methanol gas or the like can be uniformly mixed with brown gas, so that the combustion of the resulting mixed brown gas is stable and it is possible to provide an appropriate flame temperature for various applications. At the same time, the complete combustion of the mixed brown gas becomes possible.

Brown gas is a mixed gas containing oxygen and hydrogen at a ratio of 1: 2, and after being developed by Austrian Yull Brown, as a related technique, for example, a brown gas generator (Patent Document 1). ), A water electrolysis gas generator (Patent Document 2), or a brown gas heating furnace (Patent Document 3) has been developed, and a Brown gas generator is already commercially available.
As described above, the brown gas itself contains oxygen. Therefore, unlike ordinary fossil fuel gas (for example, propane gas or city gas), it is necessary to supply oxygen (or air) for combustion. And can be burned with brown gas alone.
However, when brown gas is burned alone, the flame temperature reaches a high temperature of about 3000 ° C., which causes a problem depending on the application field. For example, when brown gas is used as a fuel for an internal combustion engine, a boiler, or the like, there is a risk that the portion where the apparatus main body and the flame of brown gas are in contact with each other is melted and damaged. Or if it uses for a gas stove, to-be-heated bodies, such as a pan, will melt.

  As a technique for lowering the flame temperature of brown gas that reaches such a high temperature, by mixing a hydrocarbon gas (for example, methanol gas) with brown gas to obtain a mixed brown gas, the flame temperature is, for example, Techniques are known in which the temperature is lowered to about 1100 ° C., which is the flame temperature of natural gas, or to about 800 ° C., which is the flame temperature of kerosene or heavy oil. As an apparatus for obtaining such mixed brown gas, for example, a mixed brown gas manufacturing apparatus 50 shown in FIG. 4 is conventionally known. The manufacturing apparatus 50 includes a cylindrical mixing tank 51 filled with a liquid volatile organic compound (for example, ethanol) 57, and a brown gas supply means (for example, a brown gas supply) at the bottom of the cylindrical mixing tank 51. Tube) 53 and oxygen gas supply means (for example, oxygen gas supply tube) 55. The oxygen gas supply means 55 supplies oxygen gas necessary for burning the volatile organic compound.

  When the brown gas B is supplied from the brown gas supply means 53 and the oxygen gas O is supplied from the oxygen gas supply means 55, the brown gas B and the oxygen gas O become bubbles 58, respectively, to form a liquid volatile organic material. It rises in the compound 57 and is discharged from the liquid level 57 </ b> A of the liquid volatile organic compound 57 into the upper space 56 of the cylindrical mixing vessel 51. Since the gas of the volatile organic compound 57 vaporized from the liquid surface 57A of the liquid volatile organic compound 57 exists in the upper space portion 56 hermetically sealed by the lid portion 51A, the gas is released from the liquid surface 57A. The brown gas B and the oxygen gas O thus mixed are mixed with each other and also with the gas of the volatile organic compound 57, and the mixed brown gas M is generated in the upper space portion 56. Further, the volatile organic compound 57 is vaporized and mixed in the bubbles 58 of the brown gas B and the bubbles 58 of the oxygen gas O ascending in the liquid volatile organic compound 57. The In order to prevent a temperature drop due to the heat of vaporization of the liquid volatile organic compound 57, a heating means (for example, a heater) 59 is provided, for example, on the outer side wall portion of the cylindrical mixing vessel 51. The mixed brown gas M formed in this way is collected from the opening 54A of the mixed brown gas discharge means (for example, mixed brown gas discharge pipe) 54 and sent to, for example, a combustion system (not shown).

  However, in the mixed brown gas M manufactured by mixing brown gas and methanol gas or the like with the conventional manufacturing apparatus 50 as shown in FIG. 4, the brown gas and methanol gas or the like are not uniformly mixed. The mixed brown gas M sent from the brown gas discharge means 54 to the combustion system includes a portion having a high brown gas content ratio, a portion having a high methanol gas content ratio, and a portion having a high oxygen gas content ratio. For this reason, for example, when a portion having a large proportion of methanol gas is burned, carbon monoxide is generated due to incomplete combustion, and the flame temperature is lowered from a predetermined temperature. On the other hand, when the portion with a large proportion of brown gas is burned, it burns completely, but the flame temperature rises above the planned temperature. Thus, the conventional mixed brown gas has an unstable combustion state, and the amount of heat supplied is not stable. Therefore, it is difficult to put the mixed brown gas manufactured by a conventional manufacturing apparatus into practical use as a heat source of about 800 ° C. to about 1100 ° C., for example.

Japanese Patent No. 3130014 JP-A-8-92780 JP 2000-329358 A

The inventor has intensively studied means for uniformly mixing brown gas and volatile organic compound gas in order to stabilize the combustion of the mixed brown gas, and by providing a porous partition wall in the mixing tank, It has been found that a homogeneously mixed mixed brown gas can be produced, and according to this mixed brown gas, a heat source of about 800 ° C. to about 1100 ° C. can be stably supplied.
The present invention is based on these findings.

Therefore, the present invention
(1) Brown gas supply means;
(2) A mixing tank capable of storing a liquid volatile organic compound therein and supplying brown gas from the brown gas supply means into the liquid volatile organic compound;
(3) Mixing including a mixed brown gas discharge means for discharging mixed brown gas from the gaseous organic compound vaporized from the liquid volatile organic compound and the brown gas from the upper space of the mixing tank In brown gas production equipment,
While comprising a partition wall installed in the state of being immersed in the liquid volatile organic compound inside the mixing tank,
The partition wall has pores for ventilation with a diameter that does not allow the passage of brown gas bubbles,
Forming an aggregate of closed cells by holding the bubbles on its lower surface,
The closed cell aggregate is further grown by supplying and adsorbing Brown gas bubbles, forming a bubble fusion in which each closed cell is integrated,
Growing by supplying and adsorbing Brown gas bubbles to the bubble fusion,
Mixing is characterized in that the bubble fusion can be naturally destroyed by increasing its size, allowing the mixed gas to pass through the pores for ventilation of the partition wall and generating fine bubbles on the upper surface of the partition wall. The present invention relates to a brown gas manufacturing apparatus.

In a preferred aspect of the apparatus of the present invention, the apparatus includes oxygen gas supply means capable of supplying oxygen gas to the liquid volatile organic compound accommodated in the mixing tank.
In another preferred aspect of the apparatus of the present invention, a combustible organic compound gas supply means capable of supplying a combustible organic compound gas to the liquid volatile organic compound contained in a mixing tank is included.
In still another preferred embodiment of the device of the present invention, all of the gas contained in the bubbles supplied into the mixing tank passes through the ventilation pores of the partition wall.
In another preferred aspect of the device of the present invention, the partition wall has magnetism.
In still another preferred embodiment of the device of the present invention, the partition wall is a flat mesh.
In another preferred aspect of the device of the present invention, the plurality of flat mesh portions are arranged in parallel with each other and in parallel with the liquid surface.
In still another preferred embodiment of the apparatus of the present invention, an aggregate of porous granular materials is arranged inside the mixing tank.
In another preferable aspect of the apparatus of the present invention, the mixing tank has a heating means.
In still another preferred embodiment of the apparatus of the present invention, the apparatus further comprises means for supplying the volatile organic compound to the mixing tank.

The present invention also provides:
Supplying brown gas in the form of bubbles into the liquid volatile organic compound filled in the mixing tank, raising the liquid volatile organic compound,
Forming an aggregate of closed cells by holding the bubbles on the lower surface of the partition wall having pores with a diameter that does not allow bubbles to pass through,
The closed cell aggregate is further grown by supplying and adsorbing Brown gas bubbles, forming a bubble fusion in which each closed cell is integrated,
Growing by supplying and adsorbing Brown gas bubbles to the bubble fusion body,
The bubble-fused body is naturally destroyed by increasing its size, allowing the mixed gas to pass through the pores for ventilation of the partition wall, generating finer bubbles on the upper surface of the partition wall, and in the liquid volatile organic compound Raise,
The invention also relates to a method for producing a mixed brown gas, characterized in that the mixed gas released from the liquid surface of the liquid volatile organic compound is collected.

According to the present invention, since the brown gas and the volatile organic compound gas are uniformly mixed in the partition wall provided in the mixing tank, in the mixed brown gas discharged from the upper space part of the mixing tank, the brown gas and the above-mentioned Volatile organic compound gas is uniformly mixed, and stable combustion can be ensured. Moreover, the mixing ratio of the brown gas and the volatile organic compound gas can be easily adjusted.
In the present invention, when oxygen gas and / or flammable organic compound gas is supplied from the oxygen gas supply means and / or flammable organic compound gas supply means to the volatile organic compound in the mixing tank, oxygen gas and / or The combustible organic compound gas is also uniformly mixed with the brown gas and the volatile organic compound gas, and the mixing ratio of these gases can be easily adjusted.
Furthermore, since uniform mixing can be achieved by a simple means of adding a partition wall to the conventional manufacturing apparatus and manufacturing method, it is advantageous in terms of cost.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
An embodiment of the manufacturing apparatus according to the present invention is shown in FIG. A manufacturing apparatus 10 shown in FIG. 1 includes a cylindrical mixing tank 11 filled with a liquid volatile organic compound 17, and a brown gas supply means (for example, a brown gas supply pipe) at the bottom of the cylindrical mixing tank 11. 13 and an oxygen gas supply means (for example, an oxygen gas supply pipe) 15 are preferably provided. Further, the upper surface of the cylindrical mixing tank 11 is hermetically sealed by the lid portion 11A, and an upper space portion 16 in which the liquid volatile organic compound 17 does not exist is provided on the inner upper side. In the upper part of the cylindrical mixing tank 11, mixed brown gas discharge means (for example, mixed brown gas discharge pipe) 14 for discharging mixed brown gas from the upper space 16 is provided. Furthermore, the manufacturing apparatus 10 shown in FIG. 1 has a heating means (for example, a heat exchanger) 19 in direct contact with the liquid volatile organic compound 17 inside the bottom of the cylindrical mixing tank 11.

  Unlike the conventional manufacturing apparatus, the manufacturing apparatus 10 according to the present invention has one or a plurality of partition walls 12 inside a cylindrical mixing tank 11. The manufacturing apparatus 10 shown in FIG. 1 has two partition walls 12A and 12B. Each of the partition walls 12A and 12B has ventilation pores having a diameter that does not allow air bubbles to pass therethrough, and by holding the air bubbles on the lower surface thereof, an aggregate of closed cells can be formed.

The function of the partition wall used in the present invention and the principle of obtaining a uniform mixed brown gas according to the present invention will be described with reference to FIG. 2 (schematic cross-sectional view). FIG. 2 shows a case where oxygen gas is also supplied into the liquid volatile organic compound by an oxygen gas supply means in an embodiment having only one partition wall 12.
First, as shown in FIG. 2A, the brown gas B is supplied from the brown gas supply means 13 into the liquid volatile organic compound 17 filled in the mixing tank 11, and the oxygen gas supply means 15 is supplied. When the oxygen gas O is supplied from the gas, the brown gas B and the oxygen gas O ascend through the liquid volatile organic compound 17 as primary fine bubbles 18a and reach the lower surface of the partition wall portion 12.

  Although the partition wall portion 12 has ventilation pores, the diameter of the partition wall portion 12 is set so as not to allow the primary fine bubbles 18a of the brown gas B and the oxygen gas O to pass therethrough. That is, the brown gas B and the oxygen gas O are supplied so that primary fine bubbles 18a having a size that cannot pass through the ventilation pores of the partition wall 12 are formed. Accordingly, the primary fine bubbles 18 a are held on the lower surface of the partition wall portion 12. Since the brown gas B and the oxygen gas O are continuously supplied from the brown gas supply means 13 and the oxygen gas supply means 15, respectively, the number of bubbles held in the partition wall portion 12 increases with the supply, The primary fine bubbles 18a form an aggregate 18b of closed cells [FIG. 2 (b)].

  Since the brown gas bubbles 18a and the oxygen gas bubbles 18a are successively supplied to and adsorbed to the closed cell aggregate 18b, the closed cell aggregate 18b gradually grows, and each closed cell is successively adjacent to the adjacent closed cell. To form a primary cell fusion body 18c [FIG. 2 (c)]. As shown in FIG. 2 (c), the primary bubble fusion 18c is formed not only as one huge primary bubble fusion 18c but also as a plurality of primary bubble fusions 18c. There is also. By this fusion, the brown gas B and the oxygen gas O are mixed in the primary bubble fusion body 18c. Further, during the rising of the bubbles 18a, the gas of the volatile organic compound 17 vaporized and mixed therein is also mixed. Since the brown gas bubbles 18a and the oxygen gas bubbles 18a are further supplied and adsorbed to the one or more primary bubble fusion bodies 18c formed in this way, the primary bubble fusion bodies 18c also grow gradually. Gas is also generated from the liquid volatile organic compound 17 in contact with the primary bubble fusion 18c by vaporization of the volatile organic compound 17, and is mixed inside the primary bubble fusion 18c.

The primary bubble fusion body 18c is destroyed by itself when the size thereof is increased, and the gas contained therein passes through the ventilation pores of the partition wall portion 12, and the secondary microbubbles 18d are passed from the upper surface of the partition wall portion 12. Is again raised in the liquid volatile organic compound 17 and discharged from the liquid surface 17A of the liquid volatile organic compound 17 into the upper space 16 of the cylindrical mixing vessel 11. In the upper space 16, mixed brown gas M is formed by mixing with the gas of the volatile organic compound 17, and mixed brown gas discharge means (for example, mixed brown) provided in the upper part of the cylindrical mixing tank 11 is formed. The gas is extracted from the opening 14A of the gas discharge pipe 14 and sent to, for example, a combustion system (not shown).
In the present invention, as described above, uniform mixing can be achieved by forming a cell fusion on the lower surface of the partition wall.

  The manufacturing apparatus 10 shown in FIG. 1 has two partition walls 12A and 12B as described above. In this embodiment, as in the case of FIG. 2, the primary bubble fusion body 18 c is formed on the lower surface of the first partition wall portion 12 </ b> A from the primary fine bubbles 18 a via the closed cell aggregate (not shown). Is formed. Subsequently, the secondary microbubbles 18d formed by the gas that has passed through the ventilation pores of the first partition wall portion 12A after the destruction of the primary bubble fusion body 18c reaches the lower surface of the second partition wall portion 12B again. Then, a closed cell aggregate (not shown) is formed on the spot, and then the secondary bubble fusion 18e is formed. By the formation of the secondary cell fusion body 18e, more uniform mixing is achieved. The secondary bubble fusion body 18e is also destroyed by itself when it increases in size, and the gas contained therein passes through the ventilation pores of the second partition wall portion 12B and is 3 from the upper surface of the second partition wall portion 12B. Next, microbubbles 18f are formed, and again rise in the liquid volatile organic compound 17, and are discharged from the liquid surface 17A of the liquid volatile organic compound 17 into the upper space portion 16 of the cylindrical mixing tank 11. . In the upper space portion 16, mixed with the gas of the volatile organic compound 17 to form the mixed brown gas M, and from the opening portion 14 </ b> A of the mixed brown gas discharge means 14 provided at the upper portion of the cylindrical mixing tank 11. It is collected and sent, for example, to a combustion system (not shown). In FIG. 1, the primary microbubble 18a, the primary bubble fusion 18c, the secondary microbubble 18d, the second bubble fusion 18e, and the tertiary microbubble 18f are shown at the same time. It is shown for convenience, and does not necessarily exist at the same time.

  In the present invention, the shape and size of the mixing vessel is not particularly limited as long as the inside of the mixing vessel can be filled with a liquid volatile organic compound. For example, the mixing vessel is cylindrical or polygonal, or spherical or elliptical. Can be. The mixing tank is preferably an airtight container. The material forming the mixing tank is not particularly limited as long as it is a material that is inert to liquid volatile organic compounds and brown gas. For example, the material may be made of synthetic resin or metal (for example, stainless steel). it can. The upper part of the mixing tank is preferably hermetically sealed by a lid part.

  The mixing tank of the present invention contains a liquid volatile organic compound filled therein. Examples of the liquid volatile organic compound include any organic compound conventionally used by mixing the gas with Brownian gas. Specifically, hydrocarbon compounds that are liquid at normal temperature (20 ° C.) and atmospheric pressure, such as lower alcohols (eg, methanol, ethanol, or propanol), alkanes (eg, hexane or heptane), aromatic hydrocarbons. A compound (for example, benzene, toluene, or xylene), gasoline, or kerosene can be used. Moreover, the alcohol obtained by fermentation can also be used.

  Particularly preferred volatile organic compounds are organic compounds having a boiling point of 30 ° C to 300 ° C. When the boiling point of the volatile organic compound is higher than 300 ° C., the ratio of the gaseous volatile organic compound contained in the mixed brown gas becomes too low, so that the flame temperature when burning the mixed brown gas is sufficiently high. This is not preferable because it is difficult to lower the temperature, and further, there is a possibility that nitrogen gas in the air is oxidized during combustion to generate NOx. On the other hand, when the boiling point of the volatile organic compound is less than 30 ° C., the ratio of the gaseous volatile organic compound contained in the mixed brown gas increases, and the flame temperature when the mixed brown gas burns becomes low. Cheap. Furthermore, a volatile organic compound having a low boiling point is a dangerous substance that is easily flammable even at a low temperature, and attention should be paid to handling and storage.

  In the present invention, the liquid volatile organic compound filled in the mixing tank is gradually consumed as the mixed brown gas is produced, so that it is appropriately replenished (ie, continuously or intermittently). It is necessary to. For example, a liquid level sensor is provided on the inner wall of the mixing tank to monitor the amount of liquid volatile organic compound in the mixing tank, and a liquid volatile organic compound supply means (for example, a liquid volatile organic compound supply pipe) It is preferable to automatically replenish liquid volatile organic compounds from

  In the present invention, the mixed brown gas to be produced can contain a combustible organic compound gas. The combustible organic compound gas is not particularly limited as long as the mixture of the mixed brown gas and the combustible organic compound gas can be stably combusted. For example, any organic compound may be mentioned. it can. Specific examples include hydrocarbon compounds that are gaseous at normal temperature (20 ° C.) and atmospheric pressure, such as lower alkanes (for example, methane, ethane, propane, or butane), natural gas, and the like. Biogas produced using microorganisms can also be used.

  In the present invention, the brown gas is supplied as bubbles by the brown gas supply means in the liquid volatile organic compound filled in the mixing tank. Similarly, oxygen gas and / or flammable organic compound gas are separately supplied as bubbles into the liquid volatile organic compound by the oxygen gas supply means and / or flammable organic compound gas supply means, It can also be supplied to the upper space of the mixing tank and / or the mixed brown gas discharge means, respectively. Further, a mixed gas in which oxygen gas and combustible organic compound gas are mixed in advance is supplied as bubbles in the liquid volatile organic compound, or the upper space portion of the mixing tank and / or the mixed brown gas discharge means Can also be supplied.

  Brown gas can be supplied from a known brown gas generator, and oxygen gas can also be supplied from a known oxygen gas generator. The combustible organic compound gas can also be supplied from a cylinder filled with a combustible organic compound gas produced by a known combustible organic compound gas generator or a known method. As the oxygen gas generator, it is preferable to use a known oxygen gas generator, particularly a water electrolyzer. Moreover, a biogas generator can be used as the combustible organic compound gas generator.

As long as brown gas can be supplied into the liquid volatile organic compound, the brown gas supply means can be provided at any position in the mixing tank, but the contact between the brown gas and the liquid volatile organic compound In order to lengthen time, it is preferable to provide in the bottom part of a mixing tank. Similarly, oxygen gas supply means for supplying oxygen gas into the liquid volatile organic compound can also be provided at any position in the mixing tank, but the contact between the oxygen gas and the liquid volatile organic compound. In order to lengthen the time, it is preferable to provide at the bottom of the mixing tank, and the combustible organic compound gas supply means also supplies the combustible organic compound gas into the liquid volatile organic compound. Although it can provide in arbitrary positions, in order to lengthen the contact time of combustible organic compound gas and a liquid volatile organic compound, providing in the bottom part of a mixing tank is preferable.
Further, the brown gas supply means, the oxygen gas supply means, and the combustible organic compound gas supply means can stably supply the brown gas, oxygen gas, and combustible organic compound gas to the inside of the mixing tank, respectively. As long as the shape and the number are not limited. For example, a supply pipe having a thin tip opening is preferable so that brown gas, oxygen gas, and combustible organic compound gas can be supplied as fine bubbles, respectively.

  The supply amount of the oxygen gas is preferably an amount necessary to completely burn the volatile organic compound gas and / or the combustible organic compound gas contained in the mixed brown gas. As the oxygen gas supplied from the oxygen supply means, pure oxygen gas or a mixed gas containing oxygen gas (for example, air) can be used. Since nitrogen oxides are generated from nitrogen gas when air is used, it is preferable to use pure oxygen gas.

  In the present invention, the mixing tank has a space that does not contain a liquid volatile organic compound in the inner upper portion thereof, and includes a mixed brown gas discharge means for taking out the mixed brown gas generated in the upper space. Yes. Therefore, the mixed brown gas intake opening of the mixed brown gas discharge means is provided in the upper space of the mixing tank. It is preferable to monitor, for example, the liquid level sensor so that the mixed brown gas intake opening is not immersed under the liquid level of the liquid volatile organic compound. The mixed brown gas thus taken in is supplied, for example, to an external mixed brown gas combustion apparatus via the mixed brown gas discharge means. The shape and number of the mixed brown gas discharge means are not limited as long as the mixed brown gas can be taken in and supplied to the mixed brown gas combustion apparatus, for example. Further, the shape and number of the mixed brown gas intake opening are not limited, and may be, for example, a cone-shaped opening.

  In the present invention, the mixed layer has one or a plurality of partition walls. A partition part is installed in the inside of the said mixing tank in the state immersed completely in the said liquid volatile organic compound. When one partition wall is provided in the mixed layer, or when the plurality of partition walls are provided, the partition wall provided at the bottom (the partition wall closest to the bottom of the mixed layer) is a liquid volatile organic compound. It has ventilation pores with a diameter that does not allow the passage of brown gas bubbles and oxygen bubbles that reach the partition after rising up, and the bubbles can be held on the lower surface thereof. Also, on the lower surface, a closed cell aggregate can be formed and grown, and a bubble fusion can be formed and grown, and further released by the destruction of the larger bubble fusion It has ventilation pores through which gas can pass. Therefore, the partition wall portion provided when one partition wall portion is provided in the mixed layer, or the partition wall portion provided at the lowermost stage when a plurality of partition wall portions are provided are all on the liquid surface of the liquid volatile organic compound. It is preferable to install in parallel (that is, in the horizontal direction).

  When providing a plurality of partition walls in the mixed layer, each partition wall is provided parallel to the liquid surface of the liquid volatile organic compound (that is, in the horizontal direction), and the liquid volatile organic compound is disposed in the liquid layer. It is preferable to arrange so that the rising bubbles sequentially pass through the partition walls. Further, the partition wall portions other than the partition wall portion provided at the lowest stage (the partition wall portion closest to the bottom of the mixed layer) do not allow the mixed brown gas bubbles that reach the partition wall portion after passing through the liquid volatile organic compound to pass therethrough. It has pores for caliber ventilation and holds bubbles on its lower surface, enabling formation and growth of closed cell aggregates, formation and growth of bubble fusions, and larger-sized bubble fusion It has ventilation pores through which the mixed gas released by body destruction can pass.

  At least a part of the brown gas supplied into the mixing tank from the brown gas supply means and optionally at least a part of the oxygen gas and / or the combustible organic compound gas are bubble-fused on the lower surface of the partition wall. It is necessary to mix the brown gas and the volatile organic compound gas and, optionally, the oxygen gas and / or the flammable organic compound gas into the mixing tank. A bubble fusion is formed on the lower surface of the partition wall from all of the brown gas, and optionally oxygen gas and / or flammable organic compound gas, brown gas and volatile organic compound gas, In some cases, it is preferable to provide the partition wall so that the oxygen gas and / or the combustible organic compound gas are mixed.

The said partition part used by this invention can be a flat mesh part, for example. The flat mesh portion is, for example, a mesh knitted with a linear metal, a linear magnetic metal, a linear carbon resin, a linear synthetic resin, a linear magnetic material-containing synthetic resin or a mixture thereof, or by punching. It can be a perforated metal plate or a perforated synthetic resin plate having pores. Further, the partition wall portion may be a fibrous porous body (for example, a woven fabric, a knitted fabric, or a non-woven fabric). The material constituting the partition wall is not particularly limited as long as it is an inactive material with respect to brown gas or liquid volatile organic compound. For example, synthetic resin, magnetic material-containing synthetic resin, carbon, ceramic, sintered metal , Magnetic metal, or stainless steel.
In the present invention, the use of magnetic partition walls not only increases the amount of vaporization of the liquid volatile organic compound, but also promotes complete combustion of the resulting mixed brown gas and further stabilizes the shape of the flame. .

  The diameter of the pores for ventilation of the partition wall is the size of the supplied brown gas bubbles, the size of the oxygen gas or flammable organic compound gas bubbles that are supplied in some cases, and the size used. It is preferable to change appropriately according to the physical properties (for example, viscosity) of the liquid volatile organic compound. For example, when a about 1: 1 mixture of methanol and ethanol is used as the volatile organic compound, the lower limit of the pore diameter for ventilation is preferably 0.1 mm. Although an upper limit is not specifically limited, It is more preferable that it is 1 mm. Specifically, the pore diameter for ventilation is preferably 0.3 mm to 1 mm, more preferably 0.1 mm to 1 mm, and most preferably 0.2 to 0.6. Here, the pore diameter indicates the length of the longest portion of the pore shape. For example, when the pore is circular, it has a diameter, when it is elliptical, it has a long diameter, and when it is polygonal, it has the longest length among one side and diagonal lines that constitute the shape.

  In the present invention, it is preferable to provide a heating means capable of heating the volatile organic compound filled in the mixing tank. The volatile organic compound filled in the mixing tank is vaporized by contact with the brown gas and absorbs the heat of vaporization at that time, so that the temperature of the entire liquid volatile organic compound gradually decreases. When the temperature of the entire liquid volatile organic compound changes, the proportion of the volatile organic compound gas contained in the mixed brown gas changes accordingly, and the combustion of the mixed brown gas becomes unstable. Accordingly, a heating means is provided, and the temperature of the volatile organic compound filled in the mixing tank is kept constant by replenishing the heat of vaporization due to the vaporization of the volatile organic compound from the heating means, and the mixed brown gas It is preferable to keep the ratio of the volatile organic compound gas contained in the liquid crystal constant. For example, when a 1: 1 mixture of methanol and ethanol is used as the liquid volatile organic compound, the inside of the mixing tank is preferably maintained at −100 ° C. to 40 ° C., more preferably 0 ° C. to 10 ° C. .

The kind of heating means that can be used in the present invention is not particularly limited, and examples thereof include a heat exchanger and an electric heater.
An embodiment using a heat exchanger as the heating means is shown in FIG. 1 as described above. In this case, the liquid volatile organic compound can be directly heated inside the mixing tank and directly placed in contact with the liquid volatile organic compound. Moreover, as long as a heating means can heat the liquid volatile organic compound 17, an installation position and the number of installation are not specifically limited, For example, also in the mixing tank of the aspect shown in FIG. At least one heat exchange between the first partition wall portion 12A, between the first partition wall portion 12A and the second partition wall portion 12B, or between the second partition wall portion 12B and the liquid surface 17A of the liquid volatile organic compound. Can be installed. In addition, the heat source of the heat replenished by the heat exchanger is not particularly limited, and for example, the heat generated by the Brown gas generator can be used. When an electric heater is used as the heating means, for example, it can be provided on the outer side wall of the mixing tank (see FIG. 4 and FIG. 3 described later). In the present invention, it is preferable to provide a temperature sensor to maintain the temperature of the liquid volatile organic compound constant.

  In the present invention, the content ratio of the brown gas and the volatile organic compound gas contained in the mixed brown gas to be generated, and the content ratio of the oxygen gas and / or the combustible organic compound gas supplied in some cases are facilitated. Can be controlled. As a control method, for example, a method of adjusting the brown gas supply rate from the brown gas supply unit, a method of adjusting the oxygen gas supply rate from the oxygen gas supply unit and / or the supply rate of the combustible organic compound gas, liquid volatilization Of adjusting the depth between the gas discharge port of the brown gas supply means and the liquid volatile organic compound liquid surface by changing the liquid level of the volatile organic compound, the discharge port of the oxygen gas supply means and / or the combustible organic compound gas Of adjusting the depth between the liquid discharge volatile organic compound liquid level, the liquid volatile organic compound liquid level, and changing the liquid volatile organic compound liquid level with respect to the depth from the liquid volatile organic compound liquid level There are a method of adjusting, a method of adjusting the temperature of the liquid volatile organic compound, etc., and these can be easily controlled by combining them alone or appropriately. It can be.

  In the present invention, for example, as shown in FIG. 3, an aggregate of porous granular bodies 31 can be installed inside the mixing tank 11. By installing the aggregate of the porous granular materials 31, a small amount of impurities contained in the liquid volatile organic compound 17 can be adsorbed and removed. The generation of odors and toxic substances can be prevented. In FIG. 3, the same means as those in FIG. 1 are denoted by the same reference numerals. Further, in the manufacturing apparatus 10 shown in FIG. 3, unlike the embodiment shown in FIG. 1, the heating means 19 is provided outside the mixing tank 11.

  The porous granule is not particularly limited as long as it does not inhibit combustion stability or induce incomplete combustion with respect to the mixed brown gas. For example, a zeolite granule is used as the porous granule. be able to. It should be noted that the density of the porous granular material installed inside the mixing tank, the thickness of the aggregate layer, and the filling rate per unit volume are also stable against the mixed brown gas, and are not suitable. There is no particular limitation as long as complete combustion is not generated.

  EXAMPLES Hereinafter, the present invention will be specifically described by way of examples, but these do not limit the scope of the present invention.

Example 1
Mixed brown gas was produced using the mixed brown gas mixing apparatus of the present invention similar to the embodiment shown in FIG. 1, and the resulting mixed brown gas was burned to measure the flame temperature. In addition, carbon monoxide concentration in the gas after combustion was also measured.
In the present embodiment, the first partition wall having a mesh shape (eye size = 0.3 mm diameter) is horizontally provided at a depth of 55 cm from the liquid surface, and similarly mesh shape (eye size = 0.5 mm diameter). ) Was provided horizontally at a position 15 cm from the liquid surface. The cylindrical mixing tank had an inner diameter of about 40 cm and was filled with methanol so that the depth from the brown gas supply port and the oxygen gas supply port to the liquid level was 60 cm. The mixture tank to the Brown gas supply port from (pore diameter = 5 mm) Brown gas at a feed rate ^2m 3 / h, the oxygen gas supply port (hole diameter = 5 mm) supply amount of oxygen gas from 0.6 m ³ / A mixed brown gas was produced by supplying each at h. The liquid temperature of about 1: 1 mixture of methanol and ethanol was maintained at about 5 ° C.
From the start of the supply of the brown gas and oxygen gas, 0.6 L of about 1: 1 mixture of methanol and ethanol was vaporized by 1 hour. When the composition ratio of the mixed brown gas (brown gas: oxygen gas: methanol / ethanol mixture) is calculated from this vaporization amount, it is about 7: 2: 1.
As a result of burning the mixed brown gas produced by the apparatus and measuring the flame temperature for about 1 hour, it is stable at about 1000 to about 1100 ° C., and the concentration of carbon monoxide in the exhaust gas is low. It was a level.

  Since the mixed brown gas provided by the present invention is uniformly mixed, for example, it can be stably burned at about 800 ° C. to about 1100 ° C., and can be applied to the same fields of use as city gas and natural gas. can do.

It is sectional drawing which shows typically the mixed brown gas manufacturing apparatus of this invention. It is sectional drawing which shows the principle of the mixed brown gas manufacturing method of this invention typically. It is sectional drawing which shows typically the mixed brown gas manufacturing apparatus of another aspect of this invention. It is sectional drawing which shows typically the mixed brown gas manufacturing apparatus by the conventional method.

Explanation of symbols

10, 50 ... Mixed brown gas production apparatus; 11, 51 ... Cylindrical mixing tank;
11A ... lid part; 12, 12A, 12B ... partition part;
13, 53 ... Brown gas supply means;
14, 54 ... Mixed brown gas discharge means;
14A, 54A ... Brown gas discharge means opening;
15, 55 ... oxygen gas supply means; 16, 56 ... upper space;
17, 57 ... Liquid volatile organic compound; 17A ... Liquid surface 18, 58 ... Mixed brown gas; 18a ... Primary fine bubbles;
18b: closed cell aggregate; 18c: primary cell fusion;
18d ... secondary microbubbles; 18e ... secondary bubble fusion; 18f ... tertiary microbubbles; 19, 59 ... heating means; 31 ... porous granules;
B: Brown gas M: Mixed brown gas O: Oxygen gas.

Claims (11)

(1) Brown gas supply means;
(2) A mixing tank capable of storing a liquid volatile organic compound therein and supplying brown gas from the brown gas supply means into the liquid volatile organic compound;
(3) Mixing including mixed brown gas discharge means for discharging mixed brown gas from the gaseous organic compound vaporized from the liquid volatile organic compound and the brown gas from the upper space of the mixing tank In brown gas production equipment,
While comprising a partition wall installed in the state of being immersed in the liquid volatile organic compound inside the mixing tank,
The partition wall has pores for ventilation with a diameter that does not allow the passage of brown gas bubbles,
Forming an aggregate of closed cells by holding the bubbles on its lower surface,
The closed cell aggregate is further grown by supplying and adsorbing Brown gas bubbles, forming a bubble fusion in which each closed cell is integrated,
Growing by supplying and adsorbing Brown gas bubbles to the bubble fusion body,
The cell fusion is naturally destroyed by increasing the size, and the mixed gas is allowed to pass through the pores for ventilation of the partition wall to generate fine bubbles on the upper surface of the partition wall. Mixed brown gas production equipment.   The manufacturing apparatus according to claim 1, further comprising an oxygen gas supply unit capable of supplying oxygen gas to the liquid volatile organic compound contained in the mixing tank.   The manufacturing apparatus of Claim 1 or 2 containing the combustible organic compound gas supply means which can supply combustible organic compound gas to the said liquid volatile organic compound accommodated in the mixing tank.   All the gas contained in the bubble supplied in a mixing tank passes the pore for ventilation | gas_flowing of the said partition part, The manufacturing apparatus as described in any one of Claims 1-3.   The manufacturing apparatus as described in any one of Claims 1-4 with which the said partition part has magnetism.   The manufacturing apparatus according to claim 1, wherein the partition wall portion is a flat mesh portion.   The manufacturing apparatus according to claim 6, wherein the plurality of flat mesh portions are arranged in parallel with each other and in parallel with the liquid surface.   The manufacturing apparatus as described in any one of Claims 1-7 which has arrange | positioned the aggregate of the porous granular material inside the said mixing tank.   The manufacturing apparatus as described in any one of Claims 1-8 in which the said mixing tank has a heating means.   The manufacturing apparatus as described in any one of Claims 1-9 which further has a means to supply the said volatile organic compound to the said mixing tank. Brown gas is supplied in the form of bubbles into the liquid volatile organic compound filled in the mixing tank, and the inside of the liquid volatile organic compound is raised,
Forming an aggregate of closed cells by holding the bubbles on the lower surface of the partition wall having pores with a diameter not allowing the bubbles to pass through,
The closed cell aggregate is further grown by supplying and adsorbing brown gas bubbles to form a bubble fusion in which each closed cell is integrated,
Growing by supplying and adsorbing Brown gas bubbles to the bubble fusion,
The bubble-fused body is naturally destroyed by increasing its size, allowing the mixed gas to pass through the pores for ventilation of the partition wall, generating finer bubbles on the upper surface of the partition wall, and in the liquid volatile organic compound Raise,
A method for producing a mixed brown gas, comprising collecting mixed gas released from a liquid surface of a liquid volatile organic compound.

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