JP4646527B2 - Reformer - Google Patents

Description

  The present invention includes a reforming treatment chamber in which a reforming catalyst is charged and a hydrocarbon-based raw fuel to be supplied is reformed with steam to generate a reforming treatment gas mainly composed of hydrogen gas; The present invention relates to a reforming apparatus in which a reforming process gas flow chamber for allowing a reforming process gas discharged from the reforming process chamber to flow therethrough is arranged in parallel so as to be able to transfer heat.

  Such a reformer has a reforming process chamber and a reforming process gas flow chamber arranged side by side so that heat can be transferred, and the reforming process gas discharged from the reforming process chamber is transferred to the reforming process gas flow chamber. By conducting the flow, heat is transferred from the reformed process gas flow chamber to the reforming process chamber, and from the reformed process gas flowing through the reformed process gas flow chamber, the reforming process in the reforming process chamber is performed. It is configured to recover the heat for use, and improves the reforming treatment efficiency in the reforming treatment chamber.

  In such a reforming apparatus, conventionally, as shown in FIG. 11, the reforming process chamber 2 and the reforming process gas flow chamber 4 are separately provided using dedicated chamber forming bodies 51 and 52, respectively. The reforming treatment chamber 2 and the reforming treatment gas flow chamber 4 are formed in close contact with the chamber forming member 51 for the reforming treatment chamber and the chamber forming member 52 for the reforming treatment gas flow chamber. By arranging in parallel, the reforming treatment chamber 2 and the reforming treatment gas flow chamber 4 are juxtaposed so that heat can be transferred, and further, the reforming treatment chamber 2 and the reforming treatment gas flow chamber. 4 are connected to each other by an external connection pipe 53 piped to the outside thereof.

In other words, a pair of dish-like container forming bodies 54 are arranged with the combustion chamber side heat transfer plate 55 positioned between them, and the peripheral portions of the pair of dish-like container forming bodies 54 are connected by welding. Thus, a twin-chamber equipped container Bd having two compartments is formed, the reforming treatment chamber 2 is constituted by a portion of the twin-chamber equipped container Bd having one chamber, and the other chamber is The combustion chamber 3 for combusting fuel and heating the reforming treatment chamber 2 in the provided portion was configured.
In addition, the dish-like container forming body 58 and the plate-like container forming body 59 are arranged to face each other, and the peripheral portions of the dish-like container forming body 58 and the plate-like container forming body 59 are connected by welding to form one chamber. The single-chamber equipped container Bm was provided, and the single-chamber equipped container Bm constituted the reforming treatment gas flow chamber 4.

  That is, of the pair of dish-shaped container forming bodies 54 that form the twin-chamber equipped container Bd, the dish-shaped container forming body 54 that partitions the reforming treatment chamber 2 and the combustion chamber side heat transfer plate 55 are reformed. Corresponding to the chamber forming body 51 for the processing chamber, the plate-like container forming body 58 and the plate-like container forming body 59 forming the single chamber equipped container Bm are used as the chamber forming body 52 for the reforming process gas flow chamber. Equivalent to.

  Then, the twin chamber container Bd and the single chamber container Bm are combined into one dish-like container forming body 54 (corresponding to the chamber forming body 51 for the reforming treatment chamber) of the twin chamber container Bd and the single chamber container. By arranging the Bm dish-like container forming body 58 (corresponding to the chamber forming body 52 for the reforming process gas flow chamber) in close contact with each other, the reforming process chamber 2 and the reforming process gas flow are arranged. The flow chamber 4 is arranged side by side so that heat can be transferred, and further, the double chamber equipped vessel Bd constituting the reforming treatment chamber 2 and the single chamber equipped vessel Bm constituting the reforming treatment gas flow chamber 4 are externally connected. 53, and the reforming process gas discharged from the reforming process chamber 2 is supplied to the reforming process gas flow chamber 4 through the external connection pipe 53 (for example, Patent Documents). 1).

  In FIG. 11, 60 is a burner provided in the combustion chamber 3 for burning fuel, 1 is a reforming catalyst charged into the reforming treatment chamber 2, and 61 is a hydrocarbon-based raw fuel. The raw fuel supply path 62 for supplying the reforming process chamber 2 to the reforming process chamber 2 is a reforming process gas discharge path for guiding the reforming process gas discharged from the reforming process gas flow chamber 4.

JP 2000-178003 A

Therefore, conventionally, as described above, the reforming process chamber and the reforming process gas flow chamber are separately formed using the dedicated chamber forming bodies, and the respective reforming process chambers and the reforming chambers are formed. Since the process gas flow chamber is connected to the external connection pipe, the configuration is complicated, and the reforming apparatus is expensive.
Further, the reformer chamber forming body and the reformer gas flow chamber chamber former that are in close contact with each other function as heat transfer plates, and the reformer chamber passes through these two heat transfer plates. Since the heat transfer efficiency is deteriorated, there is room for improvement in improving the reforming treatment efficiency.
That is, not only the heat transfer efficiency is deteriorated just by transferring the heat with the two heat transfer plates, but also when at least one of the two heat transfer plates has unevenness, the heat transfer is performed between the two heat transfer plates. Since the air layer to be suppressed is formed, the heat transfer efficiency is further deteriorated.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a reforming apparatus capable of improving the reforming treatment efficiency while reducing the cost.

The reforming apparatus of the present invention is a reforming method in which a reforming catalyst is charged and a hydrocarbon-based raw fuel to be supplied is reformed with steam to generate a reforming gas mainly composed of hydrogen gas. A reforming apparatus in which a processing chamber and a reforming process gas flow chamber for allowing the reforming process gas discharged from the reforming process chamber to flow are arranged in parallel so as to be capable of transferring heat,
The reforming process chamber and the reforming process gas flow chamber are separated from each other by a single flow chamber side heat transfer plate, and the reforming process gas flow from the reforming process chamber. A compartment is formed with a gas passage part for allowing the reforming gas to pass through the chamber,
Peripheral portions of a pair of dish-like container forming bodies arranged with the combustion chamber side heat transfer plate positioned between them are welded, and the reforming chamber and the fuel are burned to form the reforming chamber. The combustion chamber to be heated is partitioned,
The reforming treatment chamber is welded and connected to the back side of the dish-shaped container forming body constituting the reforming processing chamber in a state where only the end surface portion of the peripheral portion of the dish-shaped flow chamber forming body is applied. In the state in which the dish-like container forming body constituting the function as the flow chamber side heat transfer plate, the reforming gas flow chamber is partitioned and formed,
Each of the dish-shaped container forming body and the dish-shaped flow chamber forming body is formed and processed into a dish shape in which a side wall portion rises in a state of being rounded from a peripheral edge portion of a flat bottom. And

  That is, the reforming process gas reformed in the reforming process chamber flows into the reforming process gas flow chamber through the gas passage portion, flows through the reforming process gas flow chamber, and passes through one sheet. Heat is transferred from the reforming process gas flow chamber to the reforming process chamber through the flow chamber side heat transfer plate.

In other words, the reforming process chamber and the reforming process gas flow chamber are partitioned and formed with a gas passage portion separated by a single flow chamber side heat transfer plate. The chamber and the reforming process gas flow chamber can be configured integrally, and it is not necessary to connect the reforming process chamber and the reforming process gas flow chamber with an external connection pipe as in the prior art. The configuration of the reformer can be simplified.
In addition, since heat is transferred from the reforming process gas flow chamber to the reforming chamber through one flow chamber side heat transfer plate, the heat transfer efficiency can be improved and the reforming process efficiency is improved. It becomes possible.
Accordingly, it is possible to provide a reforming apparatus that can improve the reforming treatment efficiency while reducing the cost.
Further, according to the first characteristic configuration, the two peripheral compartments are provided by welding and connecting the peripheral portions of the pair of dish-like container forming bodies arranged with the combustion chamber side heat transfer plate positioned therebetween. A combustion chamber in which a reforming chamber is formed in a portion of the container having one chamber and the reforming chamber is heated by burning fuel in a portion having the other chamber By configuring this, the combustion heat generated by the combustion of fuel in the combustion chamber can be transferred to the reforming treatment chamber through one combustion chamber side heat transfer plate.
Also, the dish-shaped container forming body constituting the reforming treatment chamber is formed by welding the peripheral portion of the dish-shaped flow chamber forming body to the dish-shaped container forming body constituting the reforming processing chamber portion of the container. Reforming from the reforming gas flow chamber through one flow chamber heat transfer plate by partitioning the reforming gas flow chamber in a state of functioning as a flow chamber side heat transfer plate Heat can be transferred to the processing chamber.
In other words, the container is configured as described above, and the reforming chamber and the combustion chamber are configured by the container, and the dish-shaped flow chamber is formed in the dish-shaped container forming body that configures the reforming chamber of the container. The peripheral part of the formed body is welded and the reforming gas flow chamber is partitioned by the dish-shaped container forming body and the dish-shaped flow chamber forming body constituting the reforming processing chamber, thereby reforming. The processing chamber, the combustion chamber, and the reforming process gas flow chamber are separated by a single combustion chamber side heat transfer plate, and the reforming processing chamber and the reforming process gas flow chamber are separated from each other. Can be configured integrally with a single flow chamber-side heat transfer plate.
And since it becomes possible to comprise a reforming process chamber, a combustion chamber, and a reforming process gas flow chamber integrally, it becomes possible to simplify an assembly structure.
In addition, heat transfer efficiency from the reforming process gas flow chamber to the reforming process chamber is improved by transferring heat from the reforming process gas flow chamber to the reforming process chamber through one flow chamber side heat transfer plate. In addition to making it possible to transfer heat from the combustion chamber to the reforming chamber through one combustion chamber side heat transfer plate, the heat transfer efficiency from the combustion chamber to the reforming chamber is also improved. Therefore, the reforming treatment efficiency can be further improved.
Therefore, it is possible to provide a suitable means for further reducing the cost and further promoting the improvement of the reforming treatment efficiency.
Furthermore, according to the first characteristic configuration, each of the dish-shaped container forming body and the dish-shaped flow chamber forming body is formed and processed into a dish shape. It becomes possible to simplify the production of each of the chamber forming bodies, and it is possible to simplify the production of the reforming process chamber, the combustion chamber, and the reforming process gas flow chamber.
By the way, each of the dish-shaped container forming body and the dish-shaped flow chamber forming body can be formed by bending, but this bending process is performed by a dish that has more processing steps than molding. The production of each of the container-shaped body and the dish-shaped flow chamber forming body is complicated.
Therefore, it is possible to provide a suitable means for further reducing the cost.

In addition to the first feature configuration, the second feature configuration is
Each of the reforming process chamber and the reforming process gas flow chamber is configured to have a thin flat shape in the thickness direction of the flow chamber side heat transfer plate.

That is, since each of the reforming process chamber and the reforming process gas flow chamber is formed in a thin flat shape in the thickness direction of the flow chamber side heat transfer plate, the unit volume of the reforming process chamber It is possible to increase the heat transfer area with respect to and the heat transfer area per unit volume of the reforming treatment gas flow chamber, and efficiently recover heat from the reforming treatment gas flowing through the reforming treatment gas flow chamber. In addition, the heating temperature distribution in the reforming chamber can be reduced.
In other words, it is possible to reduce the energy consumption related to heating so that the reforming process can be performed while allowing the raw fuel to be appropriately reformed in the reforming process chamber. Can be further improved.
Accordingly, it is possible to provide a suitable means for further promoting the improvement of the reforming treatment efficiency.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described based on the drawings.
As shown in FIGS. 1 to 3, the reformer R is charged with a reforming catalyst 1 and reforms a hydrocarbon-based raw fuel gas supplied with steam to contain hydrogen gas as a main component. A reforming process chamber 2 for generating a reforming process gas, a combustion chamber 3 for burning gas fuel to heat the reforming process chamber 2, and a reforming process gas discharged from the reforming process chamber 2 The reforming process gas flow chamber 4 is in a state where the combustion chamber 3 and the reforming process chamber 2 can transfer heat and the reforming process gas flow chamber 4 and reforming process chamber 2 can transfer heat. Are arranged side by side.

  Then, the reforming treatment chamber 2 and the reforming treatment gas flow chamber 4 are separated from each other by the one flow chamber-side heat transfer plate 5 and the reforming treatment chamber 2 performs the reforming process. The gas flow chamber 4 is partitioned with a gas passage 10 that allows the reforming gas to pass therethrough.

If it adds, the peripheral part of a pair of dish-shaped container formation body 7 arrange | positioned in the state which located the combustion chamber side heat exchanger plate 6 in the middle will be weld-connected, and the thickness direction of the combustion chamber side heat exchanger plate 6 will be described. A rectangular plate-like flat container B having two chambers each having a thin flat shape is configured, and the reforming chamber 2 is configured by a portion of the container B including one chamber, and the other The combustion chamber 3 is constituted by a portion provided with a chamber, a burner 8 for burning the gas fuel is disposed in the combustion chamber 3, and the reforming treatment chamber 2 is heated by the burner 8. Yes.
Further, the peripheral portion of the dish-shaped flow chamber forming body 9 is welded to the dish-shaped container forming body 7 constituting the reforming treatment chamber 2 of the container B, and the dish-like shape constituting the reforming processing chamber 2 is formed. In a state where the container forming body 7 functions as the flow chamber side heat transfer plate 5, a thin flat reforming process gas flow chamber 4 is formed in the thickness direction of the dish-shaped container forming body 7.

That is, the reformer R is configured such that the reforming process chamber 2 and the combustion chamber 3 are separated by a single combustion chamber side heat transfer plate 6, and the reforming process chamber 2 and the reforming process gas flow chamber 4 are separated from each other. The reforming process chamber 2, the combustion chamber 3, and the reforming process gas flow chamber 4 are integrally provided in a state separated by a single flow chamber side heat transfer plate 5.
Each of the combustion chamber 3, the reforming process chamber 2, and the reforming process gas flow chamber 4 is configured to be thin and flat in the thickness direction of the flow chamber side heat transfer plate 5.

The combustion chamber side heat transfer plate 6, the dish-shaped container forming body 7 and the dish-shaped flow chamber forming body 9 are each made of a heat-resistant metal such as stainless steel, and the combustion chamber side heat transfer plate 6 has a rectangular flat plate shape. The dish-shaped container forming body 7 is formed by press-molding into a rectangular dish shape having a bowl-shaped part around the opening, and the dish-shaped flow chamber forming body 9 has a bowl-shaped part as described above. It is formed by press molding into a rectangular dish that is not provided.
Each of the dish-shaped container forming body 7 and the dish-shaped flow chamber forming body 9 is formed in a shape in which the side wall portion rises in a rounded state from the peripheral edge portion of the flat plate-like bottom portion.
The reforming catalyst 1 is formed in a granular shape by holding a catalyst such as ruthenium, nickel, or platinum in a ceramic porous granular material.

  As shown in FIG. 2 and FIG. 3, the bowl-like shape is formed on the inner side of the bowl-shaped part on one side of the dish-shaped container forming body 7 that forms the reforming treatment chamber 2 and in the vicinity of the bowl-shaped part. A plurality of small holes are formed in a plurality of rows along the portion, and the passage portion 10 is constituted by the small hole group. In the dish-like container forming body 7, a porous plate 11 for the bottom is formed. The bottom porous plate 11 is located on the inner side of the passage portion 10 and in the vicinity of the passage portion 10, and the lid porous plate 12 is in the passage portion with respect to the bottom porous plate 11. It is attached in a state of being opposed to the side opposite to the 10 side.

  The pair of dish-like container forming bodies 7 is subjected to a number of modifications between the bottom porous plate 11 and the lid porous plate 12 inside the dish-like container forming body 7 that forms the reforming treatment chamber 2. In a state where a long burner 8 is provided at a position facing the bottom porous plate 11 inside the dish-like container forming body 7 which is filled with the catalyst 1 and forms the combustion chamber 3, each bowl-like shape is provided. It arrange | positions so that the combustion chamber side heat exchanger plate 6 may be pinched | interposed in a part, and the peripheral part may be connected by seam welding in the arrangement | positioning state, and the said container B is formed. That is, the reforming treatment chamber 2 is constituted by the portion of the container B provided with the chamber charged with the reforming catalyst 1, and the combustion chamber 3 is constituted by the portion provided with the chamber provided with the burner 8. .

Furthermore, the dish-shaped flow chamber forming body 9 is placed on the back side of the dish-shaped container forming body 7 constituting the part of the reforming treatment chamber 2 of the container B so as to cover the passage portion 10. In the arrangement state, the peripheral edge of the dish-shaped flow chamber forming body 9 is seam-welded, and the dish-shaped flow chamber forming body 9 is attached to the back surface of the dish-shaped container forming body 7, so that the reforming treatment gas The flow chamber 4 is partitioned.
Each of the pair of dish-shaped container forming bodies 7 and the dish-shaped flow chamber forming body 9 is located on the side edge side opposite to the passing section 10 and the burner 8 side, and communicates with each room. In this state, the nozzle 13 for gas supply or gas discharge is connected.
The burner B is connected with a fuel supply path 14 for supplying gas fuel and a combustion air supply path 15 for supplying combustion air.

  The reformer R configured as described above is arranged and used in a vertical posture in which the bottom porous plate 11 is located on the lower side.

Then, the gas fuel supplied through the fuel supply passage 14 by the burner 8 is burned by the combustion air supplied through the combustion air supply passage 15, and the combustion gas passes through the combustion chamber 3 upward. After flowing, the heat of the combustion gas flowing through the combustion chamber 3 is discharged from the nozzle 13 above the combustion chamber 3 through the single combustion chamber side heat transfer plate 6. Heat is transferred to 2 so that the reforming catalyst 1 can be reformed.
Further, the raw fuel gas is supplied to the reforming treatment chamber 2 from above through the nozzle 13, and the raw fuel gas is passed through the reforming catalyst 1 from the upper side to the lower side to be reformed. After the reforming process gas thus reformed is caused to flow into the reforming process gas flow chamber 4 through the gas passage 10 and the reforming process gas flow chamber 4 is allowed to flow upward. The gas is discharged from the nozzle 13 above the reforming gas flow chamber 4.

Heat is transferred from the combustion chamber 3 to the reforming treatment chamber 2 through one combustion chamber side heat transfer plate 6, and the reforming process gas flow chamber 4 is passed through one flow chamber side heat transfer plate 5. Therefore, the heat transfer efficiency can be improved and the reforming process efficiency can be improved.
In addition, as described above, the pair of dish-shaped container forming bodies 7 and the dish-shaped flow chamber forming bodies 9 are formed in a dish-like shape in which the side wall portion rises in a rounded state from the peripheral edge portion of the flat plate-like bottom portion by press molding. Therefore, it becomes possible to absorb the thermal stress in the rounded portion, and it is possible to further improve the durability.

Next, a hydrogen-containing gas generation device provided with the above-described reformer R will be described.
As shown in FIG. 4, in addition to the reformer R, the hydrogen-containing gas generator desulfurizes hydrocarbon-based raw fuel gas such as natural gas to be reformed by the reformer R. The desulfurization section 21 that performs the reforming, the steam generation section S that generates steam for reforming in the reformer R, and the reforming supplied from the reformer R (specifically, the reforming process gas flow chamber 4). A shift unit 22 that converts carbon monoxide gas in the process gas into carbon dioxide gas using water vapor, and a selective oxidation unit that selectively oxidizes the carbon monoxide gas in the reformed process gas supplied from the shift unit 22 23. And the hydrogen containing gas produced | generated with this hydrogen containing gas production | generation apparatus is used for an electric power generation in various fuel cells G, for example.

  Further, in this hydrogen-containing gas generating device, the desulfurization raw fuel gas from the desulfurization section 21 and the high-temperature reforming treatment gas from the reforming treatment gas flow chamber 4 of the reformer R are subjected to heat exchange. The desulfurized raw fuel heating heat exchanger Ea for preheating the desulfurized raw fuel gas supplied to the reforming treatment chamber 2 and the post-desulfurized raw fuel heating heat exchanger Ea are supplied to the shift unit 22. In order to cool the reforming section 22 and the heat exchanger Eb for heating raw fuel before desulfurization for preheating the raw fuel gas by exchanging heat between the reformed gas before being processed and the raw fuel gas supplied to the desulfurization section 21 The metamorphic portion cooling flow portion 25 for allowing the cooling fluid to flow, the metamorphic portion cooling flow portion 26 for allowing the cooling fluid to flow in order to cool the metamorphic portion 22, and the selective oxidation portion 23. A cooling fan 27 for cooling is provided.

Hereinafter, each part which comprises a hydrogen-containing gas production | generation apparatus is demonstrated.
The steam generation unit S includes a steam generation heating flow-through portion 28 that allows the combustion gas discharged from the combustion chamber 3 of the reformer R to flow, and the raw material water that is supplied by the steam generation heating flow-through portion 28. It comprises an evaporation processing unit 29 that evaporates by heating.

  In the reformer R, when the natural gas-based city gas (13A) mainly composed of methane gas is the raw fuel gas, reforming in the range of 600 to 700 ° C., for example, due to the catalytic action of the reforming catalyst. Under the processing temperature, methane gas and water vapor undergo a reforming reaction according to the following reaction formula (1) to be reformed into a reforming processing gas containing hydrogen gas and carbon monoxide gas.

CH ₄ + H ₂ O → CO + 3H ₂ (1)

  The reforming unit 22 is charged with a large number of ceramic porous particles holding an iron oxide-based or copper-zinc-based shift catalyst in a state of allowing ventilation, and is supplied from the reformer R. The carbon monoxide gas and water vapor in the treatment gas undergo a shift reaction by the following reaction formula (2) under the shift treatment temperature in the range of 150 to 310 ° C., for example, by the catalytic action of the shift catalyst. Carbon monoxide gas is converted to carbon dioxide gas.

CO + H ₂ O → CO ₂ + H ₂ (2)

  The selective oxidation unit 23 is charged with a large number of ceramic porous particles holding a precious metal-based selective oxidation catalyst such as platinum, ruthenium, rhodium, etc. in a state where it can be vented, and the catalyst of the selective oxidation catalyst By the action, for example, the carbon monoxide gas remaining in the reforming treatment gas after the modification treatment is selectively oxidized at a selective oxidation treatment temperature in the range of 80 to 100 ° C., for example.

  The post-desulfurization raw fuel heating heat exchanger Ea includes an upstream heat exchange flow passage 30 through which the reforming gas discharged from the reforming gas flow chamber 4 of the reformer R flows, A desulfurized raw fuel gas flow section 31 for allowing the desulfurized raw fuel gas that is desulfurized in the desulfurization section 21 to be supplied to the reformer R is provided so as to be able to exchange heat, and the desulfurization is performed. The pre-raw fuel heating heat exchange section Eb supplies the downstream heat exchange flow section 32 through which the reformed gas discharged from the upstream heat exchange flow section 30 flows and the desulfurization section 21. The raw fuel gas flow passage 33 before desulfurization through which the raw fuel gas flows is provided so as to be capable of heat exchange.

The hydrogen-containing gas generation apparatus is provided by arranging a plurality of rectangular plate-like flat containers B in the thickness direction of the plate shape, and using each container B, the reformer R, the steam generation unit S, the The desulfurization unit 21, the shift conversion unit 22, the selective oxidation unit 23, and each flow unit are configured.
That is, the plurality of containers B are configured in a flat shape including two partitioned flat chambers in the same manner as the reformer R described above. In addition, a reformer R is provided in each vessel B constituting the steam generation unit S, the desulfurization unit 21, the shift conversion unit 22, the selective oxidation unit 23, and each flow-through unit, if necessary. Similarly to the container B to be configured, a nozzle 13 for gas supply and gas discharge is connected.

In the present embodiment, eight containers B are provided side by side in the thickness direction of the containers B. In order to arrange the eight containers B, heat-insulating materials for adjusting the amount of heat transfer are placed in close contact with those that need to transfer heat, and between those that need to adjust the amount of heat transfer. 34 are arranged with 34 interposed.
In order to make the distinction of the eight containers B clear, for the sake of convenience, reference numerals 1, 2, 3,... 8 indicating the arrangement order from the left in FIG.

The portion for providing the left chamber of the leftmost container B1 is used to constitute the steam generating heating flow passage portion 28, and the portion for providing the right chamber is used to constitute the evaporation processing portion 29. That is, the water vapor generating part S is configured by the leftmost container B1.
Using the second container B2 from the left, the reformer R is configured as described above, and using the portion having the left chamber of the third container B3 from the left, the upstream heat exchange The post-desulfurized raw fuel gas flow portion 31 is formed by using the portion having the right flow chamber 30 and the right flow chamber.
The desulfurization section 21 is configured by using the left chamber of the fourth container B4 from the left, and the pre-desulfurization raw fuel gas flow section 33 is configured by using the right chamber. It is.
The downstream side heat exchange passage 32 is configured using the left chamber of the fifth container B5 from the left, and the transformation unit 22 is configured using the right chamber. It is configured.
The portion having the left chamber of the sixth container B6 from the left is used to constitute the transformation portion 22, and the portion having the right chamber is used to constitute the transformation portion cooling flow passage 25. It is.
The transformation section 22 is configured by using both chambers of the seventh container B7 from the left, and the transformation section cooling is performed by using a portion including the left chamber of the eighth (right end) container B8 from the left. The selective oxidization section 23 is configured by using a portion that constitutes the flow-through section 26 and includes the right chamber.

As shown in FIGS. 5 and 6, the hydrogen-containing gas generation apparatus arranges a plurality of containers B, a heat insulating material 34 and the like as described above, and a pair of holding plates 49 on the containers B at both ends in the arrangement direction. In a state of being applied separately, the pair of holding plates 49 are integrally assembled by connecting them with six sets of screw-type connecting means.
The screw type connecting means includes a bolt 45, a pair of nuts 46, and a pair of spring washers 47.
Each holding plate 49 is formed in an L shape, and each holding plate 49 is reinforced by two reinforcing ribs 48.
Then, with the bolts 45 inserted through the pair of holding plates 49, the nuts 46 are tightened from both sides of the bolts 45 via the spring washers 47, whereby the plurality of containers B are relatively aligned in the direction perpendicular to the arrangement direction. It is designed to be pressed from both sides in the alignment direction while allowing movement. Further, the expansion and contraction of the containers B in the arrangement direction is allowed by the expansion and contraction action of the spring washer 47.
The hydrogen-containing gas generator is installed in a state where the pair of holding plates 49 are erected and supported by the pair of holding plates 49.

  In FIG. 4, as indicated by the white arrow, the raw fuel gas supply path 35 is connected to the raw fuel gas flow passage 33 before desulfurization of the raw fuel heating heat exchange section Eb before desulfurization, and the raw fuel gas before desulfurization. Flowing portion 33, desulfurization portion 21, post-desulfurized raw fuel heating heat exchanger Ea of desulfurized raw fuel gas flow portion 31, reformer R, post-desulfurized raw fuel heating heat exchanger Ea A gas processing path that flows in the order of the upstream heat exchange flow section 30, the downstream heat exchange flow section 32 of the pre-desulfurization raw fuel heating heat exchange section Eb, the shift section 22, and the selective oxidation section 23 is formed. Thus, they are connected by a gas processing flow path 36.

  The selective oxidation unit 23 and the fuel cell G are connected by a fuel gas passage 37 so that the reforming process gas discharged from the selective oxidation unit 23 is supplied to the fuel cell G as a fuel gas, and discharged from the fuel cell G. The fuel cell G and the gas burner 8 are connected by the fuel supply path 14 in order to supply the discharged fuel gas as gas fuel to the gas burner 8 of the combustion chamber 3 of the reformer R.

  In FIG. 4, a raw water supply path 39 through which raw water for steam generation is sent from the raw water pump 38 is connected to the evaporation processing unit 29 as shown by a solid arrow, and is generated by the evaporation processing unit 29. A water vapor passage 40 for sending water vapor is connected to a gas processing flow path 36 connecting the desulfurization section 21 and the raw fuel gas flow section 31 after desulfurization, and desulfurization flows through the gas processing flow path 36. The reforming steam is mixed with the raw fuel gas.

  In FIG. 4, as indicated by a broken line arrow, the combustion gas discharged from the combustion chamber 3 of the reformer R is converted into a steam generation heating passage 28 and a transformation section cooling passage in the steam generation section S. The combustion chamber 3, the steam generation heating flow passage 28, and the transformation portion cooling flow passage 25 are connected by a combustion gas passage 41 so that the steam generation heating flow passage 28 flows in the order of 25. The evaporating section 29 is heated by the combustion gas, and the shift section cooling flow section 25 is configured to cool the shift section 22 where the shift reaction, which is an exothermic reaction, is performed by the combustion gas.

  In FIG. 4, as indicated by a one-dot chain line arrow, the blower 42 and the gas burner 8 are supplied to the combustion air supply so that air from the blower 42 is supplied as combustion air to the burner 8 of the reformer R. They are connected by a line 15. Although not shown in the figure, a cooling section cooling air passage for supplying air from the blower 42 to the burner 8 after passing the cooling section cooling flow section 26 is also provided. When the capacity is insufficient, for example, at high temperatures in summer, the combustion air can be switched to be supplied to the burner 8 through the air passage for cooling the transformation section.

  In addition, a raw material water preheating heat exchanger 43 is provided for preheating the raw material water flowing through the raw material water supply passage 39 with the reforming gas after the transformation treatment in which the transformation unit 22 performs the transformation treatment. A drain trap 44 for removing condensed water from the reforming process gas that has passed through the heat exchanger 43 is provided at a location downstream of the raw material water preheating heat exchanger 43 so that the reforming process gas after the shift treatment The raw material water is preheated by heat exchange between the raw material water and the raw material water, and the reforming gas after the modification treatment is cooled.

[Another embodiment]
Then explaining another embodiment.

(B) specific structure of the gas passing portion 10 is not limited to the small hole group exemplified in the above embodiments. For example, you may comprise with the some tubular body hold | maintained by the flow-flow chamber side heat exchanger plate 5 in the insertion state.

( B ) The reformer R according to the present invention is not limited to the case of being incorporated in the hydrogen-containing gas generator as in the above embodiment, and can be used alone.

( C ) When the reformer R according to the present invention is used for generating a fuel gas for power generation reaction in a fuel cell, the fuel cell may be a solid polymer type, a phosphoric acid type, a solid electrolyte type, a molten carbonate type, or the like. Various types of fuel cells can be targeted.
Further, when the hydrogen-containing gas generating device for generating fuel gas is configured by using the reformer R according to the present invention, when the target is a solid polymer type fuel cell, as in the above embodiment, Although it is preferable to provide the transformation unit 22 and the selective oxidation unit 23 to reduce the concentration of carbon monoxide in the generated fuel gas, for example, as in a phosphoric acid fuel cell, the carbon monoxide gas If the concentration does not need to be as low as that of the polymer type, the selective oxidation unit 23 can be omitted, and if there is no problem even if carbon monoxide gas is contained as in the solid electrolyte type, the modification is performed. The part 22 and the selective oxidation part 23 can be omitted.

( D ) As the hydrocarbon-based raw fuel to be reformed, various raw fuels such as propane gas, naphtha, kerosene, and alcohols such as methanol are used in addition to the natural gas exemplified in the above embodiment. it is Ru can.

1 is a perspective view of a reformer according to a first embodiment. Longitudinal front view of the reformer according to the first embodiment 1 is an exploded perspective view of a reformer according to a first embodiment. 1 is a longitudinal front view of a hydrogen-containing gas generation apparatus provided with a reformer according to a first embodiment. 1 is a front view of a hydrogen-containing gas generation device including a reformer according to a first embodiment. 1 is a side view of a hydrogen-containing gas generation apparatus provided with a reformer according to a first embodiment. Longitudinal front view of conventional reformer

Explanation of symbols

1 reforming catalyst 2 reforming treatment chamber 3 combustion chamber 4 reforming treatment gas flow chamber 5 flow chamber side heat transfer plate 6 combustion chamber side heat transfer plate 7 dish-shaped container forming body 9 dish-shaped flow chamber forming body 10 Gas passage

Claims (2)

A reforming chamber in which a reforming catalyst is charged and a hydrocarbon-based raw fuel to be supplied is reformed with steam to generate a reforming gas mainly composed of hydrogen gas, and the reforming process A reforming apparatus in which a reforming process gas flow chamber for allowing the reforming process gas discharged from the chamber to flow therethrough is arranged in parallel so that heat can be transferred,
The reforming process chamber and the reforming process gas flow chamber are separated from each other by a single flow chamber side heat transfer plate, and the reforming process gas flow from the reforming process chamber. A compartment is formed with a gas passage part for allowing the reforming gas to pass through the chamber,
Peripheral portions of a pair of dish-like container forming bodies arranged with the combustion chamber side heat transfer plate positioned between them are welded, and the reforming chamber and the fuel are burned to form the reforming chamber. The combustion chamber to be heated is partitioned,
The reforming treatment chamber is welded and connected to the back side of the dish-shaped container forming body constituting the reforming processing chamber in a state where only the end surface portion of the peripheral portion of the dish-shaped flow chamber forming body is applied. In the state in which the dish-like container forming body constituting the function as the flow chamber side heat transfer plate, the reforming gas flow chamber is partitioned and formed,
Each of the dish-shaped container forming body and the dish-shaped flow chamber forming body is formed and processed into a dish shape in which a side wall portion rises in a state of being rounded from a peripheral portion of a flat bottom portion. .   The reforming apparatus according to claim 1, wherein each of the reforming treatment chamber and the reforming treatment gas flow chamber is configured to be thin and flat in the thickness direction of the flow chamber side heat transfer plate.

Images