JPS6233701B2 - - Google Patents
Info
- Publication number
- JPS6233701B2 JPS6233701B2 JP55044171A JP4417180A JPS6233701B2 JP S6233701 B2 JPS6233701 B2 JP S6233701B2 JP 55044171 A JP55044171 A JP 55044171A JP 4417180 A JP4417180 A JP 4417180A JP S6233701 B2 JPS6233701 B2 JP S6233701B2
- Authority
- JP
- Japan
- Prior art keywords
- hydrogen
- present
- exhaust gas
- combustion exhaust
- water
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 18
- 229910052739 hydrogen Inorganic materials 0.000 claims description 16
- 239000001257 hydrogen Substances 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 239000003463 adsorbent Substances 0.000 claims description 8
- 229910052736 halogen Inorganic materials 0.000 claims description 8
- 150000002367 halogens Chemical class 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 229910000039 hydrogen halide Inorganic materials 0.000 claims description 4
- 239000012433 hydrogen halide Substances 0.000 claims description 4
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 238000003795 desorption Methods 0.000 description 4
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 2
- 229910000043 hydrogen iodide Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- -1 SO 2 Chemical class 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Description
【発明の詳細な説明】
本発明は燃焼排ガスを処理して発電する方法に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for processing combustion exhaust gas to generate electricity.
従来より石油火力発電所或いは石炭火力発電所
のように石油や石炭を燃焼させた場合に排出され
る燃焼排ガス中の二酸化硫黄等の硫黄酸化物を処
理する方法として湿式処理法が知られている。し
かしこの方法では処理に多量の純水を必要とし、
また副生する石膏の純度も悪く、且つ処理後の廃
水中に種々の有害物質が多く含まれるという欠点
が存在する。 Wet treatment methods have been known as a method for treating sulfur oxides such as sulfur dioxide in the flue gas emitted when oil or coal is burned, such as in oil-fired power plants or coal-fired power plants. . However, this method requires a large amount of pure water for treatment.
Further, there are disadvantages in that the purity of the gypsum produced as a by-product is poor, and that the wastewater after treatment contains a large amount of various harmful substances.
斯かる湿式処理法の欠点を回避するため、最近
乾式の排煙脱硫が見直されてきている。この場合
吸着剤に二酸化硫黄（以下SO2と記載する）が吸
着され、不活性ガスで脱着されるので純粋なSO2
が得られる。本発明はこのように排煙脱硫により
得られるSO2を用いて発電する方法に係るもので
ある。 In order to avoid the drawbacks of such wet treatment methods, dry flue gas desulfurization has recently been reconsidered. In this case, sulfur dioxide (hereinafter referred to as SO 2 ) is adsorbed by the adsorbent and desorbed with an inert gas, resulting in pure SO 2
is obtained. The present invention thus relates to a method of generating electricity using SO 2 obtained by flue gas desulfurization.
即ち本発明は燃焼排ガス中より吸着剤により吸
着し不活性ガスにより吸着精製して得られる二酸
化硫黄を水と共に電解して水素を発生せしめ、又
は上記二酸化硫黄に水及びハロゲンを加えて発生
させたハロゲン化水素を熱分解して水素を発生せ
しめ、得られた該水素をアルカリ又はリン酸燃料
電池の燃料として発電することを特徴とする発電
方法に係る。 That is, the present invention generates hydrogen by electrolyzing sulfur dioxide obtained from combustion exhaust gas by adsorbing it with an adsorbent and purifying it with an inert gas with water, or by adding water and halogen to the sulfur dioxide. The present invention relates to a power generation method characterized in that hydrogen halide is thermally decomposed to generate hydrogen, and the resulting hydrogen is used as fuel for an alkaline or phosphoric acid fuel cell to generate power.
本発明において用いられる燃焼排ガスはSO2等
の硫黄酸化物を含む燃焼排ガスであればいずれで
もよく、例えば代表的には石油或いは石炭火力発
電所において排出される燃焼排ガスを挙げること
ができる。 The combustion exhaust gas used in the present invention may be any combustion exhaust gas containing sulfur oxides such as SO 2 , and typically includes combustion exhaust gas discharged from oil or coal-fired power plants.
本発明では上記燃焼排ガス中より吸着剤により
吸着し、次いで不活性ガスにより脱着精製するこ
とにより純粋なSO2を得る。吸着剤としては例え
ば活性炭等を、不活性ガスとしては例えば窒素等
を挙げることができ、吸着、脱着操作は公知の方
法に準じて行うことができる。 In the present invention, pure SO 2 is obtained by adsorbing the combustion exhaust gas with an adsorbent and then desorbing and purifying it with an inert gas. Examples of the adsorbent include activated carbon, and examples of the inert gas include nitrogen. Adsorption and desorption operations can be performed according to known methods.
本発明では上記のようにして得られたSO2を水
と共に電解槽に入れ電解して水素と硫酸に変換す
る。この電解反応は一般の水電解において必要と
されるよりも低い電圧で進行し有利である。また
本発明では別の方法として上記のSO2に水及びハ
ロゲンを加えて反応させてハロゲン化水素と硫酸
を発生せしめ、次いでこのハロゲン化水素を熱分
解して水素とハロゲンに変換する。ハロゲンは再
使用可能である。上記においてハロゲンとしては
沃素（I2）、臭素（Br2）が好ましい。 In the present invention, SO 2 obtained as described above is placed in an electrolytic cell together with water and electrolyzed to convert it into hydrogen and sulfuric acid. Advantageously, this electrolytic reaction proceeds at a lower voltage than that required in general water electrolysis. In another method of the present invention, water and halogen are added to the above SO 2 and reacted to generate hydrogen halide and sulfuric acid, and then the hydrogen halide is thermally decomposed to convert it into hydrogen and halogen. Halogens are reusable. In the above, the halogen is preferably iodine (I 2 ) or bromine (Br 2 ).
本発明では上記のようにして得られた水素をア
ルカリ又はリン酸燃料電池の燃料として用いて発
電する方法である。本発明によれば燃焼排ガス中
のSO2を有効に利用して公害の防止と同時に電力
を製造することができ、石油等の資源の沽渇ない
しは価格の高騰が必至の将来において極めて有力
なエネルギー生産方法である。 The present invention is a method of generating electricity by using the hydrogen obtained as described above as a fuel for an alkaline or phosphoric acid fuel cell. According to the present invention, it is possible to effectively utilize SO 2 in combustion exhaust gas to prevent pollution and at the same time produce electricity, which will become an extremely powerful energy source in the future when it is inevitable that resources such as oil will be depleted or their prices will rise. It is a production method.
本発明の更に好ましい態様について以下に述べ
る。本発明の電解により水素を発生せしめる方法
において、吸着剤に吸着されたSO2を脱着する際
に不活性ガスを用いず、その代りに水蒸気を用い
て脱着すれば、これを次いでそのまま電解反応に
供することができ、不活性ガスによる脱着工程を
省略することができ、それだけプロセスが簡略化
される。 More preferred embodiments of the present invention will be described below. In the method of generating hydrogen by electrolysis of the present invention, if an inert gas is not used when desorbing SO 2 adsorbed on an adsorbent, but steam is used instead, this can then be directly subjected to an electrolytic reaction. The desorption step using an inert gas can be omitted, which simplifies the process accordingly.
また本発明の後者の方法においては吸着剤に吸
着されたSO2に水蒸気とハロゲン蒸気を添加して
活性炭の如き吸着剤上で
SO2＋2H2O＋X2→2HX＋H2SO4
なる反応を行わせ、これを次いで350〜400℃に加
熱して脱着すると活性炭の触媒作用でHXが分解
して水素とハロゲンに変換させることができる。
この方法によれば不活性ガスを用いる必要がな
く、しかもSO2の脱着をHXの生成とこの熱分解
の反応と一体的に行うことができプロセスの簡略
化を一層図ることができる。 In the latter method of the present invention, water vapor and halogen vapor are added to SO 2 adsorbed on an adsorbent, and a reaction of SO 2 +2H 2 O+X 2 →2HX+H 2 SO 4 is carried out on the adsorbent such as activated carbon. When this is then heated to 350-400°C and desorbed, HX is decomposed by the catalytic action of activated carbon and can be converted into hydrogen and halogen.
According to this method, there is no need to use an inert gas, and the desorption of SO 2 can be performed integrally with the generation of HX and the thermal decomposition reaction, thereby further simplifying the process.
次に本発明の実施について具体的に説明する。
25万KWの石炭火力発電所から排出される80万Ｎ
m3／ｈの燃焼排ガスを乾式排煙脱硫装置により処
理した。石炭としては硫黄分が約２％のものを用
い、燃焼排ガス中のSO2濃度は約1500ppmであつ
た。排ガス中のSO2全量は約1200Nm3／ｈであ
る。活性炭を用いて吸着し、次いで窒素により脱
着する。得られたSO2は約1150Nm3／ｈで、脱硫
率は約95.8％である。このSO2を水と共に電解電
圧0.6V、電流密度0.2A／cm2で電解して約1100N
m3／ｈの水素を得る。得られた水素をアルカリ燃
料電池の燃料として用いることにより約1800KW
の電力を得た。 Next, implementation of the present invention will be specifically explained.
800,000 N emitted from a 250,000 KW coal-fired power plant
m 3 /h of combustion exhaust gas was treated by a dry flue gas desulfurization device. The coal used had a sulfur content of about 2%, and the SO 2 concentration in the combustion exhaust gas was about 1500 ppm. The total amount of SO 2 in the exhaust gas is approximately 1200Nm 3 /h. Adsorption using activated carbon followed by desorption with nitrogen. The obtained SO 2 was about 1150 Nm 3 /h, and the desulfurization rate was about 95.8%. This SO 2 is electrolyzed with water at an electrolysis voltage of 0.6V and a current density of 0.2A/cm 2 to produce approximately 1100N.
m 3 /h of hydrogen is obtained. Approximately 1800KW is generated by using the obtained hydrogen as fuel for an alkaline fuel cell.
got power.
また本発明の電解によらない方法では、上記で
得られたSO2に水と沃素を加えて約100℃に加熱
して沃化水素と硫酸に変換することができる。得
られた沃化水素を触媒を使用して加熱することに
より水素と沃素に分解する。このようにして得ら
れた水素は上記と同様にアルカリ又はリン酸燃料
電池の燃料として用いることによりほぼ同量の電
力を製造することができる。 Furthermore, in the non-electrolytic method of the present invention, water and iodine can be added to the SO 2 obtained above and heated to about 100° C. to convert it into hydrogen iodide and sulfuric acid. The obtained hydrogen iodide is decomposed into hydrogen and iodine by heating using a catalyst. The hydrogen thus obtained can be used as a fuel for an alkaline or phosphoric acid fuel cell in the same manner as described above to produce approximately the same amount of electricity.
以上述べたように本発明の方法は燃焼排ガス中
のSO2を処理することにより公害の発生を防止す
ると共に、電力を得ることができ、極めて有望な
エネルギー製造方法を提供するものである。 As described above, the method of the present invention prevents the occurrence of pollution by treating SO 2 in combustion exhaust gas, and can also obtain electric power, providing an extremely promising energy production method.
Claims (1)
ガスにより脱着精製して得られる二酸化硫黄を水
と共に電解して水素を発生せしめ、又は上記二酸
化硫黄に水及びハロゲンを加えて発生させたハロ
ゲン化水素を熱分解して水素を発生せしめ、得ら
れた該水素をアルカリ又はリン酸燃料電池の燃料
として発電することを特徴とする発電方法。1 Hydrogen halide generated by electrolyzing sulfur dioxide obtained from combustion exhaust gas by adsorbing it with an adsorbent and desorbing and purifying it with an inert gas together with water to generate hydrogen, or by adding water and halogen to the above sulfur dioxide. A power generation method characterized by generating hydrogen by thermally decomposing the hydrogen, and generating power by using the obtained hydrogen as fuel for an alkaline or phosphoric acid fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4417180A JPS56141178A (en) | 1980-04-03 | 1980-04-03 | Electric power generation by treating combustion exhaust gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4417180A JPS56141178A (en) | 1980-04-03 | 1980-04-03 | Electric power generation by treating combustion exhaust gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56141178A JPS56141178A (en) | 1981-11-04 |
| JPS6233701B2 true JPS6233701B2 (en) | 1987-07-22 |
Family
ID=12684134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4417180A Granted JPS56141178A (en) | 1980-04-03 | 1980-04-03 | Electric power generation by treating combustion exhaust gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56141178A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006526882A (en) * | 2003-06-05 | 2006-11-24 | ソーラー リアクター テクノロジーズ，インコーポレイテッド | Methods for treating flue gas emissions |
| US20060013761A1 (en) * | 2004-07-01 | 2006-01-19 | Westinghouse Electric Company Llc | Isolated hydrogen production process |
-
1980
- 1980-04-03 JP JP4417180A patent/JPS56141178A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56141178A (en) | 1981-11-04 |
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