KR101040703B1 - Micro channel reactor having plural intake or discharge port - Google Patents

Abstract

The present invention is a micro-channel reactor used in the hydrogen production apparatus, in particular, a plurality of inlet port or discharge port formed in each of the plurality of inlet port or discharge port formed in the plurality of plurality to improve the flow efficiency and the size of the reactor can be reduced A micro channel reactor having two inlet or outlet ports.

Reforming, Micro Channel, Leakage, Gasket

Description

Micro channel reactor having a plurality of inlet or discharge ports

The present invention is a micro-channel reactor used in the hydrogen production apparatus, in particular, a plurality of inlet port or discharge port formed in each of the plurality of inlet port or discharge port formed in the plurality of plurality to improve the flow efficiency and the size of the reactor can be reduced A micro channel reactor having two inlet or outlet ports.

In general, energy production is mostly generated by fossil fuels. However, as environmental issues such as global warming and carbon monoxide emissions are recently raised, demand for next generation pollution-free power generation technology is increasing.

As one of the next generation pollution-free power generation technologies, fuel cells using hydrogen have been proposed. As is widely known, the fuel cell has two electrodes, a positive electrode and a negative electrode, sandwiched in the form of a sandwich with an electrolyte capable of transferring electricity, and then hydrogen is supplied through the negative electrode (+) of the fuel cell. The structure in which oxygen is supplied through the anode (-) is used. At this time, the hydrogen introduced through the cathode is divided into hydrogen ions (H +) and electrons (e-) by a catalyst such as platinum, and the hydrogen ions flow to the anode (+) through an electrolyte in the center of the fuel cell. The electrons move through an external circuit and flow electric current to generate electricity.

As described above, in order to use a fuel cell, hydrogen is required. Recently, a number of technologies related to hydrogen production using a reforming reaction have been proposed.

In this case, in the case of the reforming reaction, it is usually an endothermic reaction, and therefore, continuous heat must be supplied from the outside.

The reforming reaction using this principle will be described with reference to FIG. 1.

As shown in FIG. 1, the reformed fuel is introduced into the reforming reactor 11, and the combustion fuel is introduced into the combustion reactor 12. The reforming reactor 11 includes a reforming catalyst to generate hydrogen by the reaction as described above.

In addition, combustion fuel is burned in the fuel reactor 12 to generate heat to supply heat to the reforming reaction.

Hydrogen generated at this time is purified and collected through the separator 20, and is injected into the fuel cell as described above.

In this case, as shown in FIG. 1, a reactor 10 including a plurality of reforming reactors 11 and combustion reactors 12 having the same shape is usually used, and hydrogen generation efficiency is obtained by using a plurality of such reactors 10. Will improve.

The structure of the above-mentioned reactor 10 is demonstrated with reference to FIG. However, since both the reforming raw material and the combustion raw material can be reacted in the reactor 10 having the same shape, the reforming fuel and the combustion raw material will be collectively referred to as a reaction gas.

As shown in FIG. 2, the reactor 10 has a plate shape, and a plurality of microchannels 10c protrude so that the reaction gas (reforming gas or combustion gas) flows between the microchannels 10c and causes a reaction. In this case, the reforming reaction is by a reforming catalyst, the combustion reaction is by a combustion catalyst.

In this case, the reactor 10 includes an inlet port 10a and a discharge port 10b for inlet and outlet of the reaction gas.

That is, the reaction gas is introduced through the inlet port 10a, the introduced reaction gas passes through the micro channel 10c, and a predetermined reaction occurs. After the reaction, the reaction gas is discharged to the outside through the discharge port 10b. Discharged.

However, such a reactor 10 has a problem in that the reaction efficiency is low because the inlet port 10a and the discharge port 10b are formed one by one.

That is, in order to improve the reaction efficiency, the reaction gas should be injected at high pressure. In the conventional reforming reactor 10, if the reactor is introduced at high pressure, leakage occurs or leakage occurs due to excessive differential pressure. As described above, the reaction efficiency is low, and as a result, the miniaturization is difficult.

In order to solve the problems described above, the present invention can form a plurality of inlet or outlet ports on the plate where the reaction takes place, so that the reaction gas can be introduced at a high pressure, and the leakage phenomenon does not occur. It is an object to provide a possible reaction plate.

In order to solve the above problems, the present invention includes a plate-shaped reaction plate, and a microchannel formed on the reaction plate, in the microchannel reactor in which a reaction material flows within the microchannel and causes a reaction, the reaction plate At least one port of the inlet port or the discharge port respectively formed on both sides of the characterized in that the micro-channel reactor.

According to the configuration of the present invention as described above it is possible to add the reaction gas at a high pressure, there is an effect that the reaction efficiency can be improved and downsized by preventing the occurrence of leakage phenomenon.

At least one of the inlet port and the discharge port of the present invention is a bar that is formed in plural to the gist will be described in more detail through the accompanying drawings and embodiments below.

Example 1

Reactor 100 of the present embodiment is a conventional micro-channel reactor that reacts with the reaction material flows inside the micro-channel 120 formed on the plate-shaped reaction plate 110 as shown in Figure 3 and claim 1 In each of the end of the reaction plate 110 is formed in the inlet port 130 and the discharge port 140, the inlet / outlet of the reaction material, and the inlet port 130 and the discharge port 140 on one side It further comprises a plurality of protruding guide channel 160 is formed to guide the flow of the reaction gas, the inlet port 130 is formed of one, the discharge port 140 is formed of two have.

That is, the reaction gas flows into the micro channel 120 through the inflow port 130, and the reaction occurs in the micro channel 120, and the reacted gas is discharged to the discharge port 140.

In this case, since the discharge port 140 is formed in two, the reaction gas can be introduced at a high pressure, thereby improving the reaction efficiency, and as a result, the reactor 100 can be downsized.

In addition, as shown in FIG. 3, flow ports 150 are formed on both sides of the inlet port 130, so that the flow between the reaction plates 110 is performed as described below.

Meanwhile, the inlet port 130 and the guide channel 160 and the micro channel 120 are formed to protrude to prevent the reaction gas introduced by the inlet port 130 from flowing to the flow port 150. It is also preferable to include a micro channel partition 121 surrounding ().

On the other hand, it is also preferable to form a fixing hole 170 so that the fixing means (not shown) such as bolts can be inserted in order to firmly secure a plurality of reaction plates 110, as will be described later.

In addition, it is preferable to block the flow between the components by forming a partition formed protruding around the flow port 150, which will be described later.

Meanwhile, in order to stack the plurality of reactors 100 as described above, the inlet port 130, the discharge port 140, and the microchannel 120 are disposed on the upper and lower surfaces of the reaction plate 110, that is, the front and rear surfaces, respectively. Can also be formed.

At this time, as shown in Figure 4 and claim 3, wherein the micro channel 110, the inlet port 130 and the discharge port 140 are formed on the upper and lower surfaces of the reaction plate 110, respectively, Positions of the inflow port 130 and the discharge port 140 may be formed to be the same on both the upper and lower sides.

In addition, the micro-channel 120, the inlet port 130 and the discharge port 140 are formed on the upper and lower surfaces of the reaction plate 110, as shown in Figure 5 and claim 2, respectively, Positions of the port 130 and the discharge port 140 may be formed in opposite directions on both the upper and lower sides.

As described above, the positions of the inlet port 130 and the discharge port 140 on the upper and lower sides of the reaction plate 110 are formed in opposite directions on both the upper and lower sides, and the micro channel reactor 100 as shown in claim 4. One side of the) performs a combustion reaction, the other side is to perform a reforming reaction, it is also possible to perform the reforming reaction using the heat generated by the combustion reaction.

Meanwhile, as illustrated in claim 5 and FIG. 6, the plurality of reaction plates 110 may be stacked to form the flow path C by contacting each other with the microchannels 120.

However, it is preferable to use the gasket 300 to secure the airtightness between the stacked reaction plates 110.

The gasket 300 is disposed between the stacked reaction plates 110 as shown in FIGS. 7 and 7.

In this case, the gasket 300 is opened on the plate-shaped body 310, and the opening 320 to open the central portion of the body 310 so that the microchannels 120 of the reaction plates 110 are stacked. ) Is formed.

As described above, the microchannels 120 of the plurality of stacked reaction plates 110 are brought into contact with each other by the opening 320 to form the flow passage C.

On the other hand, both sides of the opening portion 320 of the gasket 300 corresponding to the position of the inlet port 130, the discharge port 140 and the flow port 150 to be described later respectively of the reaction plate 110 A port connecting hole 330 is formed through the main body 310 is formed.

In other words, as shown in FIG. 8, the opening 320 is formed only at the center portion of the main body 310 of the gasket 300, and both ends thereof are not opened to cover the reaction plate 110. Inlet port 130, the discharge port 140 and the flow port 150 is opened by the).

This will be described in detail with reference to FIGS. 9 and 10.

9 illustrates a case in which the gasket 300 is covered on the flow port 150. In the case of the flow port 150, the flow port partition 151 and the gasket (protruding around the flow port 150 are formed). 300 is in close contact with the microchannel 120 so as not to flow to the side of the port connecting hole 330 through the flow port connecting hole 333 corresponding to the flow port 150 of the laminated reaction plate ( 110) to flow through.

10 illustrates a case in which the gasket 300 is covered with the inflow port 130 or the discharge port 140, and the gasket 300 is not in close contact with the inflow port 130 and the discharge port 140. A gap is formed between the gasket 300 and the inflow port 130 or the discharge port 140 by the guide channel 160.

Flow gas flows to the microchannel 120 through the formed gap, and between the stacked reaction plates 110 through an inlet connection hole 331 or a discharge port connection 332 of the port connection hole 330. It flows through.

This flow will be explained once again.

As described above, the present invention is characterized in that at least one port of the inlet port 130 or the discharge port 140 is formed in plural, one inlet port 130 and two discharge ports 140. It should be understood that the present invention is not limited by this embodiment, which is configured as.

Hereinafter, the case where the upper and lower surfaces of the reaction plate 110 have the same shape as the case having the opposite shape will be described in detail with reference to the examples.

Example 2

The present embodiment will be described with reference to FIG. 11 as a case where the upper and lower surfaces of the reaction plate 110 are the same, that is, a case where a plurality of reaction plates 110 as shown in FIG. 4 are stacked.

First, for convenience of description of the present embodiment, reference numerals I and II are given from reaction plates disposed at the lowermost side, and each inflow, discharge, and flow port formed on the lower side of each reaction plate is assigned to each reference numeral. d was added, and inflow, discharge, and flow ports formed on the upper side added u.

In addition, the thickness of the reaction plate 110 of the present invention is shown in FIG. 11 in a larger manner, which is intended to make the present invention easier to understand by showing components formed on the bottom surface of the reaction plate 110. In practice, as shown in FIG. 3 described above, a thin reaction plate 110 is generally used.

This is the same also in the case of Figure 12 to be described later, detailed description thereof will be omitted.

In addition, illustration of the gasket 300 is omitted in order to express the drawings clearly.

First, the reaction gas flows through the inlet port 130d formed on the bottom surface of the reaction plate I, that is, the lower side thereof, and flows toward the inlet port 130u formed on the top surface of the reaction plate I.

At this time, as described above, one side of the inflow port 130 flows to the microchannel (not shown) by the guide channel 160, and the other part flows to the reaction plate II side.

The reaction gas introduced into the micro channel side of the reaction plate I passes through the micro channel to perform a reaction process, and flows to the discharge port 140u side of the reaction plate I.

At this time, since the discharge ports 140u are formed in two, the reaction gas flowing in the microchannel is divided into two flows and introduced into the discharge ports 140u, respectively.

Meanwhile, in order to express the splitting into two flows on the reaction plate I in FIG. 11, two arrows are split from the inlet port 130u and are respectively directed toward the discharge port 140u.

However, this is for clearly expressing that the flow of the reaction gas is divided into two, and in fact, the diverged flow passing through the micro channel will flow into each discharge port 140u.

Meanwhile, the reaction gas flowing to the discharge port 140u flows to another reaction plate (not shown) via the lower side discharge port 140d and the upper side discharge port 140u of the reaction plate II.

Meanwhile, the gas flowing to the upper side inlet port 130u through the lower side inlet port 130d of the reaction plate II is partially flowed to the microchannel side of the reaction plate II in the manner described above. It flows to the discharge port 140 side and the rest flows to another reaction plate (not shown) side again.

It passes through the reaction plates stacked in this way to perform a predetermined reaction.

In particular, in the case of the second embodiment can be carried out the WGS reaction. This is because, in the case of the WGS reaction, when the adiabatic performance is secured, the necessary WGS reaction can be performed without a separate heating means.

Example 3

As shown in FIG. 12, the inlet port 130 and the discharge port 140 on the reaction plate 110 are formed upside down.

In particular, the case in which the STR reaction and the combustion reaction are performed in the reaction plate 110 will be described.

First, for the convenience of description of the present embodiment, reference numerals I, II, and III are given from the reaction plates disposed at the lowermost side, and each inflow, discharge, and flow port formed on the lower surface of each reaction plate is shown in each drawing. D is added to the symbol, and inflow, discharge, and flow ports u formed on the upper surface are added as described above.

As shown in FIG. 12, the STR reaction gas flows into the inlet port 130d disposed on the lower side of the reaction plate I disposed at the lowermost side, and the flow port 150d disposed on both sides of the inlet port 130d. The combustion reaction gas flows in.

First, the STR reaction gas will be described. The STR reaction gas flows through the flow port 150u formed on the upper side of the reaction plate I and flows toward the lower side flow port 150d of the reaction plate II.

In this case, the flow of the microchannel formed on the upper side of the reaction plate I through the flow port 150u formed on the upper side of the reaction plate I is blocked by the gasket 300, as described above. .

Meanwhile, the STR reaction gas flowing through the lower side flow port 150d of the reaction plate II flows to the upper side inlet port 130u of the reaction plate II, and as described above, a part of the upper portion of the reaction plate II The reaction flows to the lateral microchannels to cause a reaction, and the remaining part flows through the lower inlet port 130d of the reaction plate III to the upper side flow port 150u of the reaction plate III.

In addition, the STR reaction gas flowing through the microchannel of the reaction plate II flows to the discharge port 140u side of the reaction plate II, which is connected to the lower side discharge port 140d and the upper side flow port 150u of the reaction plate III. Flow through.

On the other hand, the combustion reaction gas flows through the lower side flow port 150d of the reaction plate I and flows toward the upper side inlet port 130u of the reaction plate I.

At this time, the combustion reaction gas flowing to the inlet port 130u side flows partly to the lower inlet port 130d side of the reaction plate II and the remaining combustion reaction gas flows to the microchannel side of the reaction plate I, thereby causing the combustion reaction. It flows to the discharge port 140u side.

In addition, the combustion reaction gas flowing toward the lower side inlet port 130d of the reaction plate II passes through the reaction plate II and then reacts while flowing to the upper side microchannel of the reaction plate III similarly to the above-described method.

In addition, the combustion reaction gas flowing into the upper side microchannel 120u of the reaction plate I also flows through the reaction plate II and the reaction plate III as described above.

At this time, the STR reaction can be performed by the heat generated by the combustion reaction gas.

As described above, the flow port 150 is formed at one side of each of the inlet port 130 and the discharge port 140 of the reaction plate 110 as shown in claim 6 by the flow port 150. The reaction gas flows through the stacked reaction plates 110, and flows to the micro channel side 120 through the inlet port 130 or is discharged through the discharge port 140. A gas flows through the stacked reaction plates 110.

Meanwhile, as described above, the reactor 100 may perform a reforming reaction including the STR reaction and also perform a combustion reaction. Hereinafter, the reaction will be described in detail with reference to Examples.

Example 4

In this embodiment, as shown in claim 9 to claim 14 may further be used as a reforming reactor to produce hydrogen by further comprising a STR reforming catalyst layer in the micro-channel reactor 100 of the present invention.

The STR reforming catalyst layer may be formed of a metal, a ceramic or a mixture thereof, preferably from a mixture comprising a heat resistant ceramic carrier and an active material.

In this case, the heat-resistant ceramic carrier is alpha-aluminum oxide (α-Al ₂ O ₃ ), gamma-aluminum oxide (γ-Al ₂ O ₃ ), theta-aluminum oxide (θ-Al ₂ O ₃ ), magnesium aluminate One or a mixture of two or more selected from magnesium aluminate spine (Mg-Al ₂ O ₄ ), magnesium oxide (MgO), calcium oxide (CaO), and the like may be used.

In addition, the active material may be used at least one selected from nickel-based (for example, nickel-based Al ₂ O _3, etc.), cobalt-based and Group 8 metal-based.

In this case, the Group VIII metal series includes a Group VIII metal such as Ru, Pd, Pt, and Rh, or a compound (eg, RuO) in which one or more Group VIII metals are bound in a molecule.

In addition, the active material is preferably a mixture of nickel-based (for example, NiAl ₂ O _4, etc.) and Group 8 metal series.

At this time, the nickel series increases the heat resistance, and the Group 8 metal series forms alloys or clusters with Ni to improve the dispersibility of Ni while having high reaction activity and resistance to carbon deposition. Can be improved.

More preferably, the catalyst layer further includes an alkali metal type as an additive in addition to the heat resistant carrier and the active material. The alkali metal system includes an alkali metal selected from K, Ca, Mg, and the like, or a compound (eg, MgO, MgS, etc.) in which one or more alkali metals are bound in a molecule. When the catalyst layer further includes an alkali metal system as described above, the resistance to carbon deposition can be improved, thereby achieving a more stable activity of the catalyst. In addition, in the case of using a nickel-based active material, NiAl ₂ O ₄ may be generated and the activity may be reduced. In this case, when the alkali metal system is added, the formation of NiAl ₂ O ₄ is suppressed, and thus, at a high temperature (eg, 700 ° C. or more). There is an advantage that firing is possible.

The catalyst layer as described above is preferably manufactured in a sol state in which a heat resistant carrier, an active material, and an alkali metal system are dispersed in water, an organic solvent (alcohol, etc.), and then, on one side or both sides of the channel plate 130. Can be formed. For example, in the case of an active material such as a nickel-based or group 8 metal-based, it may be manufactured and used in a sol dispersed in alcohols such as methanol, and in the case of an alkali metal, a sol dispersed in water. Can be prepared and used). In addition, the catalyst layer is prepared in a sol state as described above, and then coated on one or both sides of the channel plate 130 (preferably impregnated coating), and then supported on the channel plate 130 by firing. At this time, the firing is not particularly limited, but may be performed at 700 ° C. or higher, preferably 750 ° C. or higher.

Example 5

In this embodiment, the microchannel reactor 100 of the present invention is used as a combustion reactor.

That is, as described above, the STR reforming reaction is required to supply heat in relation to the endothermic reaction, in which the combustion reaction is caused by the combustion catalyst included in the micro channel reactor 100 as shown in claim 10. Thereby supplying the heat required for the reforming reaction.

Meanwhile, as the combustion catalyst, platinum group elements such as platinum, rhodium, ruthenium, osmium, iridium, palladium, gold, silver, copper, or two of them It may be selected from the group consisting of the above mixture. In particular, the combustion catalyst may be supported on the catalyst support. The supporting of the combustion catalyst is first coated with a catalyst support, and the aqueous solution of the combustion catalyst is added so that the amount of the combustion catalyst is 0.1 to 5% by weight relative to the catalyst support, followed by drying and calcining. The catalyst support may be selected from the group consisting of aluminum oxide, α-aluminum oxide, zirconium oxide (ZrO ₂ ), silica (SiO ₂ ) or a mixture of two or more thereof, preferably α-oxidation Aluminum can be used.

That is, as described above, one side of the micro channel reactor 100 performs a combustion reaction, and the other side performs a STR reforming reaction, using the heat generated by the combustion reaction to the STR reforming reaction. It is also possible to do this.

As described above, the micro-channel reactor 100 of the present invention can form a plurality of at least one or more ports of the inlet port 130 and the discharge port 140 to use the high pressure reaction gas without leakage, thereby increasing the reaction efficiency. This makes it possible to miniaturize the reactor.

Meanwhile, when the plurality of micro channel reactors 100 are stacked, a guide groove 180 is formed to be recessed on one side of the reaction plate 110, as shown in FIGS. 13 and 8, wherein the reaction is performed. When the plate 110 is stacked, the guide grooves 18 may be inserted into the guide bar B so that the plates 110 may be easily stacked.

1 is a conceptual diagram of a conventional reforming system,

2 is a conceptual diagram for a conventional reactor,

3 is a perspective view of a reaction plate of the present invention,

4 and 5 are perspective views of various modifications of the reaction plate of the present invention,

6 is a cross-sectional view of a state in which a plurality of reaction plates of the present invention are stacked;

7 is a perspective view of a gasket of the present invention,

8 is an exploded perspective view illustrating that the reaction plate and the gasket of the present invention are coupled;

9 and 10 are separated perspective views showing the flow on the flow port and the inlet / outlet port of the reaction plate of the present invention,

11 and 12 are conceptual diagrams showing that the reaction gas flows in a state where a plurality of reaction plates of the present invention are stacked;

Fig. 13 is an exploded perspective view showing the reaction plates of the present invention being stacked by guide bars.

<Explanation of symbols for main parts of the drawings>

100 reactor 110 reaction plate

120: micro channel 130: inlet port

140: discharge port 200: gasket

Claims (15)

In a micro channel reactor in which a reaction material flows within a micro channel formed on a plate-shaped reaction plate and causes a reaction, An inlet port and a discharge port which are respectively formed at both ends of the reaction plate to inlet / discharge the reactant; A plurality of guide channels protruding on one side of the inlet port and the discharge port to guide the flow of the reaction gas, At least one port of the inflow port or the discharge port is formed in plurality, And a plurality of inlet or outlet ports, wherein the plurality of reaction plates are stacked to form a flow path in contact with each other. The method of claim 1, The microchannel and the inlet and outlet ports are respectively formed on the upper and lower surfaces of the reaction plate, and the inlet and outlet ports are formed in opposite directions on both upper and lower sides. Micro channel reactor comprising. The method of claim 1, The microchannel and the inlet and outlet ports are formed on the upper and lower surfaces of the reaction plate, respectively, and the inlet and outlet ports include a plurality of inlet or outlet ports, characterized in that formed on the same upper and lower sides. Micro channel reactor. The method according to claim 1 or 2, One side of the micro channel reactor to perform a combustion reaction, the other side to perform a reforming reaction, And a plurality of inlet or outlet ports, characterized in that for performing the reforming reaction using heat generated by the combustion reaction. delete The method of claim 1, As formed on each side of the inlet and outlet ports of the reaction plate, Allow the reaction gas to flow through the stacked reaction plates, while flowing to the microchannel side through the inlet port, Or a flow port through which the reaction gas discharged through the discharge port flows through the stacked reaction plates. The method of claim 6, Further comprising a gasket disposed between the stacked reaction plates, The gasket may include a plate-shaped body, an opening part for opening the central part of the body to allow the microchannels of the reaction plate to contact each other, and located at both ends of the opening part, wherein the inlet port, the discharge port, and Including a port connecting hole formed through the main body corresponding to the position of the flow port, respectively, In the case of the inlet port and the outlet port, a gap is formed between the gasket and the inlet and outlet ports by the guide channel to allow flow gas to flow to the microchannel side through the gap, and the stacked port is connected through the port connection hole. Flow through the reaction plates, The flow port is provided with a plurality of inlet or outlet ports, characterized in that the gasket is in close contact so as not to flow to the micro-channel side while passing through the stacked reaction plates through the port connection hole. Microchannel reactor. The method of claim 1, Further comprising a guide groove formed to be grooved on one side of the reaction plate, When stacking the reaction plate micro-channel reactor having a plurality of inlet or outlet ports characterized in that the guide groove is fitted to the guide bar to facilitate the stacking The method according to any one of claims 1 to 3, The micro channel reactor is a micro channel reactor having a plurality of inlet or outlet ports, characterized in that used as a reformer for producing hydrogen including a STR reaction catalyst layer. 10. The method of claim 9, The STR reaction catalyst layer is a ceramic carrier, A micro channel reactor having a plurality of inlet or outlet ports, characterized in that it comprises at least one active material selected from nickel based, cobalt based and group 8 metal based. The method of claim 10, The STR reaction catalyst layer is a micro-channel reactor having a plurality of inlet or outlet ports, characterized in that further comprises an alkali metal. The method of claim 10, The ceramic carrier may be alpha-aluminum oxide (α-Al ₂ O ₃ ), gamma-aluminum oxide (γ-Al ₂ O ₃ ), theta-aluminum oxide (θ-Al ₂ O ₃ ), magnesium aluminate fennel (magnesium An aluminate spine; Mg-Al ₂ O ₄ ), a micro-channel reactor having a plurality of inlet or outlet ports, characterized in that one or two or more selected from magnesium oxide (MgO) and calcium oxide (CaO). The method of claim 10, The Group 8 metal series is a micro-channel reactor having a plurality of inlet or outlet ports, characterized in that the Group 8 metal alone or a compound in which at least one Group 8 metal is bonded in the molecule. The method of claim 11, The alkali metal system is a micro channel reactor having a plurality of inlet or outlet ports, characterized in that the alkali metal alone or a compound in which at least one alkali metal is bonded in the molecule. The method according to any one of claims 1 to 3, The micro-channel reactor having a plurality of inlet or discharge ports, characterized in that the combustion reactor further comprises a combustion catalyst.

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