JPH06104001A - Method for feeding material to reformer - Google Patents
Method for feeding material to reformerInfo
- Publication number
- JPH06104001A JPH06104001A JP4249058A JP24905892A JPH06104001A JP H06104001 A JPH06104001 A JP H06104001A JP 4249058 A JP4249058 A JP 4249058A JP 24905892 A JP24905892 A JP 24905892A JP H06104001 A JPH06104001 A JP H06104001A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- reforming
- reformer
- gas
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Hydrogen, Water And Hydrids (AREA)
- Fuel Cell (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料電池発電プラント
用改質器への原料供給方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for supplying a raw material to a reformer for a fuel cell power plant.
【０００２】[0002]
【従来の技術】燃料電池発電プラントは、水素を含む燃
料から電気化学的に電気を発生する発電装置であり、天
然ガス等の原燃料ガスを燃料とする場合には原燃料ガス
を水素を含む改質ガスに改質するために改質器が用いら
れる。かかる改質器では、原燃料ガスに含まれる炭化水
素（例えばメタン、ＣＨ4 ）を水蒸気（Ｈ2 Ｏ）と反応
させて、例えば、ＣＨ4 ＋Ｈ2 Ｏ → ＣＯ＋３Ｈ2 、
の反応により水素（Ｈ2）と一酸化炭素（ＣＯ）に変換
（改質）する。従って、改質器へ原燃料を供給する前
に、上述した改質反応に必要な量の水蒸気を原燃料に供
給する必要がある。2. Description of the Related Art A fuel cell power plant is a power generation device that electrochemically generates electricity from a fuel containing hydrogen. When a raw fuel gas such as natural gas is used as a fuel, the raw fuel gas contains hydrogen. A reformer is used to reform the reformed gas. In such a reformer, hydrocarbons (such as methane and CH 4 ) contained in the raw fuel gas are reacted with steam (H 2 O) to generate, for example, CH 4 + H 2 O → CO + 3H 2 ,
Is converted (reformed) into hydrogen (H 2 ) and carbon monoxide (CO). Therefore, before supplying the raw fuel to the reformer, it is necessary to supply the raw fuel with the amount of steam necessary for the above-described reforming reaction.
【０００３】従来の改質器への原料供給は、例えば図２
に示すように、原燃料ガスａに改質用水蒸気ｇを流量調
節弁ｂ（Ｓ／Ｃ制御弁という）を介して混合し、更に加
熱器ｃで昇温して改質器原料ガスｄとして改質器ｅに送
っていた。The conventional raw material supply to the reformer is, for example, as shown in FIG.
As shown in FIG. 3, the raw fuel gas a is mixed with the reforming steam g through the flow rate control valve b (referred to as S / C control valve), and the temperature is further raised by the heater c to obtain the reformer raw material gas d. It was sent to the reformer e.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来の改質器
の原料供給では、常温の原燃料ガスａと高温の改質用水
蒸気ｇとが通常、理想的には混合されず、実際には局所
的に水分の凝縮が起こり、水滴が発生する問題点があっ
た。この水滴は、一旦出来ると混合後の加熱器ｃでは、
原料ガスｄが短時間に通過してしまうため再蒸発させる
ことができず、この水滴が改質器ｅに入り、改質器内の
改質触媒を損傷・劣化させる問題点があった。However, in the conventional feed of the reformer, the raw fuel gas a at room temperature and the steam for reforming at high temperature g are usually not ideally mixed, and in practice, There has been a problem that water condensation occurs locally and water droplets are generated. These water droplets, once mixed, will be heated in the heater c after mixing.
Since the raw material gas d passes through in a short time, it cannot be re-evaporated, and the water droplets enter the reformer e, which damages and deteriorates the reforming catalyst in the reformer.
【０００５】かかる問題点を回避するため、すなわち水
蒸気混合時の水分の凝縮を避けるため、従来は過熱度の
高い水蒸気を使用する必要があった。しかし、燃料電池
発電プラントでは、水蒸気はプラントの排熱を利用して
発生させるため、過熱度の高い水蒸気を得るには、高温
の排ガスが必要である問題点があった。本発明はかかる
問題点を解決するために創案されたものである。すなわ
ち、本発明の目的は、水蒸気の混合時に水滴の発生がな
く、従って水滴による改質触媒の損傷・劣化がなく、か
つ過熱度の高い水蒸気を必要としない、改質器の原料供
給方法を提供することにある。In order to avoid such a problem, that is, in order to avoid condensation of water when mixing water vapor, it is conventionally necessary to use water vapor having a high degree of superheat. However, in the fuel cell power generation plant, since steam is generated by utilizing the exhaust heat of the plant, there is a problem that high-temperature exhaust gas is required to obtain steam with a high degree of superheat. The present invention was created to solve such problems. That is, an object of the present invention is to provide a reformer raw material supply method, in which water droplets are not generated during mixing of steam, therefore, the reforming catalyst is not damaged or deteriorated by water droplets, and steam having a high degree of superheat is not required. To provide.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、改質用
水蒸気の圧力以上の圧力の水蒸気により改質用の原燃料
ガスを間接加熱し、次いで改質用水蒸気を原燃料ガスに
混入して改質用原料ガスとし、次いで該改質用原料ガス
を間接加熱して改質器へ供給する、ことを特徴とする改
質器の原料供給方法が提供される。According to the present invention, the reforming raw fuel gas is indirectly heated by steam having a pressure equal to or higher than the pressure of the reforming steam, and then the reforming steam is mixed into the raw fuel gas. There is provided a reforming raw material gas, and then the reforming raw material gas is indirectly heated and supplied to the reformer.
【０００７】本発明の好ましい実施例によれば、前記改
質用の原燃料ガスを間接加熱する水蒸気は、改質用水蒸
気である。According to a preferred embodiment of the present invention, the steam indirectly heating the reforming raw fuel gas is reforming steam.
【０００８】[0008]
【作用】本発明は、改質のための原燃料ガスを改質用水
蒸気の圧力と同程度の圧力以上の圧力をもつ水蒸気で間
接加熱する加熱器（熱交換器）を原燃料ガスに改質用水
蒸気を注入する前に設けることにより、改質器原料ガス
中における水分の凝縮を防止するものである。According to the present invention, a heater (heat exchanger) for indirectly heating the raw fuel gas for reforming with steam having a pressure equal to or higher than the pressure of the reforming steam is changed to the raw fuel gas. By providing the quality steam before injecting it, the condensation of water in the reformer raw material gas is prevented.
【０００９】すなわち、本発明によれば、改質用水蒸気
の圧力以上の圧力の水蒸気により改質用の原燃料ガスを
間接加熱するので、原燃料ガスは改質用水蒸気と混合さ
れる前に改質用水蒸気の飽和温度に近い温度、或いはそ
れ以上まで加熱される。従って、改質用水蒸気を改質用
水蒸気の飽和温度に近い温度（或いはそれ以上）の原燃
料ガスと混合しても水蒸気温度はほとんど低下せず、従
って水蒸気混合時に水滴の発生がなく、水滴による改質
触媒の損傷・劣化がない。また、原燃料ガスを間接加熱
する水蒸気は、改質用水蒸気の圧力以上の圧力の水蒸気
であればよく、特に過熱度の高い水蒸気を必要としな
い。That is, according to the present invention, since the reforming raw fuel gas is indirectly heated by the steam having a pressure equal to or higher than the pressure of the reforming steam, the raw fuel gas is mixed with the reforming steam. It is heated to a temperature close to or higher than the saturation temperature of the reforming steam. Therefore, even if the reforming steam is mixed with the raw fuel gas at a temperature close to (or higher than) the saturation temperature of the reforming steam, the steam temperature hardly decreases, and therefore, no water droplets are generated during the steam mixing, and the water droplets are not generated. There is no damage or deterioration of the reforming catalyst. Further, the steam indirectly heating the raw fuel gas may be steam having a pressure equal to or higher than the pressure of the reforming steam, and does not particularly require steam having a high degree of superheat.
【００１０】[0010]
【実施例】以下に本発明の実施例を図面を参照して説明
する。図１は本発明の方法を実施する改質器の原料供給
系統を示す構成図である。この図において、改質するた
めの原燃料１（天然ガスなど炭化水素）は原燃料供給ラ
インから蒸気加熱式加熱器２に供給され、原燃料１は加
熱器２で間接加熱後、水蒸気ライン１３から改質用水蒸
気４を注入され、改質器原料ガス５となって改質器原料
ガスラインを通り、更に原料ガス予熱器６で加熱された
後、改質器７の触媒が充填された改質管内に入る。改質
器７において、燃料８と空気９が改質器燃焼器１０に供
給されて燃料８が燃焼し、この燃焼により発生した熱に
より、改質管内の改質器原料ガス５が触媒の作用により
水素（Ｈ2 ）と一酸化炭素（ＣＯ）を主成分とする改質
ガス１１に改質され、改質ガスラインから燃料電池等に
供給される。また、燃焼により発生した燃焼排ガス１２
は改質器燃焼排ガスラインから改質器外に排出される。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a raw material supply system of a reformer for carrying out the method of the present invention. In this figure, a raw fuel 1 (hydrocarbon such as natural gas) for reforming is supplied from a raw fuel supply line to a steam heating type heater 2. The raw fuel 1 is indirectly heated by the heater 2 and then a steam line 13 The reforming steam 4 is injected into the reformer raw material gas 5 through the reformer raw material gas line and further heated by the raw material gas preheater 6, and then the catalyst of the reformer 7 is filled. Enter the reforming tube. In the reformer 7, the fuel 8 and the air 9 are supplied to the reformer combustor 10 to burn the fuel 8, and the heat generated by this combustion causes the reformer raw material gas 5 in the reformer tube to act as a catalyst. Is reformed into a reformed gas 11 containing hydrogen (H 2 ) and carbon monoxide (CO) as main components, and supplied to a fuel cell or the like through a reformed gas line. Also, combustion exhaust gas 12 generated by combustion
Is discharged from the reformer combustion exhaust gas line to the outside of the reformer.
【００１１】１３は水蒸気供給ラインであり、燃料電池
発電プラントではプラント内の排熱を回収して発生した
水蒸気が利用される。流量制御弁１４は、原燃料中の炭
素分に対して一定量の水蒸気を供給する（すなわち、ス
チーム／カーボン比を一定にする）ための制御弁であ
る。この流量制御弁１４により改質用水蒸気４が原燃料
１に混入される。１５は蒸気加熱式加熱器２の加熱用水
蒸気であり、加熱器２内で凝縮した凝縮水は凝縮水ライ
ン１６を介して系外に排出される。Reference numeral 13 is a steam supply line, and in a fuel cell power plant, steam generated by recovering exhaust heat in the plant is used. The flow rate control valve 14 is a control valve for supplying a constant amount of water vapor to the carbon content in the raw fuel (that is, keeping the steam / carbon ratio constant). The reforming steam 4 is mixed into the raw fuel 1 by the flow control valve 14. Reference numeral 15 is steam for heating the steam heating type heater 2, and condensed water condensed in the heater 2 is discharged to the outside of the system through a condensed water line 16.
【００１２】改質器の原料の供給は、改質用水蒸気４の
圧力以上の圧力の加熱用水蒸気１５により改質用の原燃
料ガス１を間接加熱し、次いで改質用水蒸気４を原燃料
ガス１に混入して改質用原料ガス５とし、次いでこの改
質用原料ガス５を原料ガス予熱器６により間接加熱して
改質器７へ供給することにより行われる。図示の例で
は、原燃料ガス１を間接加熱する加熱用水蒸気１５は、
改質用水蒸気４と同一であるが、本発明はこれに限定さ
れず、改質用水蒸気４と別系統のより圧力の高い水蒸気
を蒸気加熱式加熱器２の加熱用水蒸気１５としても良
い。また、原料ガス予熱器６は加熱器２と同様の蒸気加
熱式であるが、より高い圧力の水蒸気で予熱するように
なっているのがよい。The reformer raw material is supplied by indirectly heating the reforming raw fuel gas 1 with the heating steam 15 having a pressure equal to or higher than the pressure of the reforming steam 4, and then using the reforming steam 4 as the raw fuel. The reforming raw material gas 5 is mixed with the gas 1 and then the reforming raw material gas 5 is indirectly heated by the raw material gas preheater 6 and supplied to the reformer 7. In the illustrated example, the heating steam 15 for indirectly heating the raw fuel gas 1 is
Although it is the same as the reforming steam 4, the present invention is not limited to this, and steam having a higher pressure than that of the reforming steam 4 and having a higher pressure may be used as the heating steam 15 of the steam heating heater 2. Further, the raw material gas preheater 6 is a steam heating type similar to the heater 2, but it is preferable to preheat with steam having a higher pressure.
【００１３】上述した本発明の方法によれば、原燃料供
給ラインからの原燃料１を蒸気加熱式加熱器２によって
改質用水蒸気４の飽和温度又はこれに近い温度まで加熱
した後で改質用水蒸気４と混合するので改質器原料ガス
５中で改質器原料ガス中の水分が凝縮するおそれがなく
なる。このため、水滴が改質器内に流入し、改質触媒を
破壊するなど種々の不具合を発生させるおそれがなくな
る。また、原燃料ガスを間接加熱する水蒸気は、改質用
水蒸気の圧力以上の圧力の水蒸気であればよく、特に過
熱度の高い水蒸気を必要としない。According to the above-described method of the present invention, the raw fuel 1 from the raw fuel supply line is heated by the steam heating type heater 2 to the saturation temperature of the reforming steam 4 or a temperature close thereto, and then the reforming is performed. Since it is mixed with the steam 4 for use in the reformer, there is no possibility of condensing water in the reformer source gas 5 in the reformer source gas 5. Therefore, there is no possibility that water drops will flow into the reformer and cause various problems such as destruction of the reforming catalyst. Further, the steam indirectly heating the raw fuel gas may be steam having a pressure equal to or higher than the pressure of the reforming steam, and does not particularly require steam having a high degree of superheat.
【００１４】更に、蒸気式加熱器２の蒸気側は凝縮熱伝
達であり極めて熱伝達率が高く、比較的小さな伝熱面積
で原燃料１を加熱用水蒸気の飽和（凝縮）温度付近まで
加熱することができる。Further, the steam side of the steam type heater 2 is a condensation heat transfer and has a very high heat transfer coefficient, and the raw fuel 1 is heated to near the saturation (condensation) temperature of the heating steam with a relatively small heat transfer area. be able to.
【００１５】[0015]
【発明の効果】従って、本発明によれば、１．天然ガス
などの原燃料と改質用水蒸気とを混合した時に局所的に
も水蒸気の遅れによる水滴の発生がない、２．この結
果、改質器内に水滴が流入し、触媒を損傷するなどの不
具合を発生させるおそれがなくなる、３．改質用水蒸気
として過熱度の低い或いは飽和水蒸気を使用することも
可能になり、比較的低温の排熱を利用して、改質用水蒸
気を発生させることを可能とし、排熱回収効率を高める
ことができる、４．原燃料加熱熱源に水蒸気を使してい
るので凝縮熱伝達率が高いことから、蒸気加熱式加熱器
は小形にすることができる、等の種々の効果が得られ
る。Therefore, according to the present invention, 1. 1. When mixing raw fuel such as natural gas and reforming steam, water droplets are not locally generated due to delay of steam. As a result, there is no risk of water droplets flowing into the reformer and causing problems such as damage to the catalyst. It is also possible to use steam with low superheat or saturated steam as reforming steam, and it is possible to generate reforming steam by utilizing exhaust heat at a relatively low temperature and improve exhaust heat recovery efficiency. 3. Since steam is used as the heat source for heating the raw fuel, the condensation heat transfer rate is high, so that various effects such as the steam heating type heater can be made small can be obtained.
【００１６】要約すれば、本発明により、水蒸気混合時
に水滴の発生がなく、従って水滴による改質触媒の損傷
・劣化がなく、かつ過熱度の高い水蒸気を必要としな
い、改質器の原料供給方法を提供することができる。[0016] In summary, according to the present invention, there is no generation of water droplets when mixing with steam, therefore there is no damage / deterioration of the reforming catalyst due to water droplets, and there is no need for steam with a high degree of superheat. A method can be provided.
【図１】本発明の方法を実施する改質器の原料供給系統
を示す構成図である。FIG. 1 is a configuration diagram showing a raw material supply system of a reformer for carrying out the method of the present invention.
【図２】従来の改質器の原料供給系統を示す構成図であ
る。FIG. 2 is a configuration diagram showing a raw material supply system of a conventional reformer.
１ 原燃料 ２ 蒸気加熱式加熱器 ４ 改質用水蒸気 ５ 改質器原料ガス ６ 原料ガス予熱器 ７ 改質器 ８ 改質器燃料 ９ 空気 １０ 改質器燃焼器 １１ 改質ガス １２ 改質器燃焼排ガス １３ 蒸気供給ライン １４ 流量制御弁 １５ 加熱用水蒸気 １６ 凝縮水ライン 1 Raw Fuel 2 Steam Heating Type Heater 4 Reforming Steam 5 Reformer Raw Material Gas 6 Raw Material Gas Preheater 7 Reformer 8 Reformer Fuel 9 Air 10 Reformer Combustor 11 Reformed Gas 12 Reformer Combustion exhaust gas 13 Steam supply line 14 Flow control valve 15 Steam for heating 16 Condensate line
Claims (2)
により改質用の原燃料ガスを間接加熱し、次いで改質用
水蒸気を原燃料ガスに混入して改質用原料ガスとし、次
いで該改質用原料ガスを間接加熱して改質器へ供給す
る、ことを特徴とする改質器の原料供給方法。1. A raw fuel gas for reforming is indirectly heated by steam having a pressure equal to or higher than the pressure of the steam for reforming, and then the steam for reforming is mixed into the raw fuel gas to form a raw material gas for reforming. A method for supplying a raw material for a reformer, characterized in that the reforming raw material gas is indirectly heated and supplied to the reformer.
水蒸気は、改質用水蒸気である、ことを特徴とする請求
項１に記載の改質器の原料供給方法。2. The reformer raw material supply method according to claim 1, wherein the steam indirectly heating the reforming raw fuel gas is reforming steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24905892A JP3356310B2 (en) | 1992-09-18 | 1992-09-18 | Raw material supply method for reformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24905892A JP3356310B2 (en) | 1992-09-18 | 1992-09-18 | Raw material supply method for reformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06104001A true JPH06104001A (en) | 1994-04-15 |
| JP3356310B2 JP3356310B2 (en) | 2002-12-16 |
Family
ID=17187386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24905892A Expired - Fee Related JP3356310B2 (en) | 1992-09-18 | 1992-09-18 | Raw material supply method for reformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3356310B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015080230A1 (en) * | 2013-11-27 | 2015-06-04 | 京セラ株式会社 | Reformer, cell stack device, fuel cell module, and fuel cell device |
-
1992
- 1992-09-18 JP JP24905892A patent/JP3356310B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015080230A1 (en) * | 2013-11-27 | 2015-06-04 | 京セラ株式会社 | Reformer, cell stack device, fuel cell module, and fuel cell device |
| JPWO2015080230A1 (en) * | 2013-11-27 | 2017-03-16 | 京セラ株式会社 | Reformer, cell stack device, fuel cell module and fuel cell device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3356310B2 (en) | 2002-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59141406A (en) | Rapid starting type methanol reactor | |
| US20030093950A1 (en) | Integrated fuel processor for rapid start and operational control | |
| JPH1064568A (en) | Method for simultaneously forming electrical energy and heat for heating, and plant for carrying out the method | |
| CA2594394A1 (en) | Method of starting-up solid oxide fuel cell system | |
| JP2019536243A5 (en) | ||
| JP2007538184A (en) | Reformed gasoline assisted combustion | |
| JPH05147902A (en) | Production of hydrogen | |
| JPH09237635A (en) | Solid electrolyte fuel cell | |
| JPH07230819A (en) | Internally modified solid electrolyte fuel cell system having self-heat exchange type heat insulating prereformer | |
| JPH06104001A (en) | Method for feeding material to reformer | |
| JP4135871B2 (en) | Apparatus and method for reforming kerosene or light oil using exhaust heat as a heat source | |
| JP2005507137A (en) | System and method for preparing fuel for a fuel processing system | |
| JPH053043A (en) | Fuel cell device | |
| JPH07106881B2 (en) | Fuel cell reformer device | |
| JP2003040603A (en) | Hydrogen generator | |
| JPH0963608A (en) | Fuel cell power generating system | |
| JP4049526B2 (en) | Method for starting reformer for fuel cell | |
| JPH10275625A (en) | Fuel cell generator | |
| JP2006294464A (en) | Fuel cell power generation system | |
| JP2001163601A (en) | Reforming device | |
| JP2006124442A (en) | Method for feeding water to heat recovery system and exhaust heat recovery boiler | |
| JPH05275103A (en) | Method and device for starting fuel cell generating device | |
| JPH04243538A (en) | Method and device for controlling catalyst layer temperature of fuel reformer for fuel battery use | |
| JP2538924B2 (en) | Hydrocarbon gas humidifier | |
| JP4393760B2 (en) | Gas production method and production plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |