JPS6059672A - Effective use of purge gas in ammonia synthesis industry - Google Patents

Effective use of purge gas in ammonia synthesis industry

Info

Publication number
JPS6059672A
JPS6059672A JP58166142A JP16614283A JPS6059672A JP S6059672 A JPS6059672 A JP S6059672A JP 58166142 A JP58166142 A JP 58166142A JP 16614283 A JP16614283 A JP 16614283A JP S6059672 A JPS6059672 A JP S6059672A
Authority
JP
Japan
Prior art keywords
purge gas
hydrogen
ammonia synthesis
fuel cell
gas
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.)
Pending
Application number
JP58166142A
Other languages
Japanese (ja)
Inventor
Takaaki Tamura
田村　孝章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOGYO KAIHATSU KENKYUSHO
Original Assignee
KOGYO KAIHATSU KENKYUSHO
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KOGYO KAIHATSU KENKYUSHO filed Critical KOGYO KAIHATSU KENKYUSHO
Priority to JP58166142A priority Critical patent/JPS6059672A/en
Publication of JPS6059672A publication Critical patent/JPS6059672A/en
Pending legal-status Critical Current

Links

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
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • 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

Abstract

PURPOSE:To effectively use purge gas by using as fuel gas of fuel cell purge gas mainly comprising hydrogen, nitrogen and argon produced in ammonia synthesis industry. CONSTITUTION:Purge gas containing hydrogen, nitrogen, and argon, and practically free from CO and CO2 generated in ammonia synthesis process is supplied to an alkaline fuel cell as a hydrogen source. Use for fuel cell of purge gas is very effective compared with use for boiler. Since the content of CO and CO2 in purge gas is negligible compared with that in hydrogen from a hydrogen bomb, when purge gas is used as hydrogen source of alkaline fuel cell, generation of Na2CO3 is very small and life of the cell is increased.

Description

【発明の詳細な説明】 この発明は、アンモニア合成工業で発生する主として水
素、窒素およびアルゴンからなるパージガスを燃料電池
の燃料ガスとして使用することでこのパージガスを有効
に利用する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of effectively utilizing purge gas generated in the ammonia synthesis industry, which mainly consists of hydrogen, nitrogen, and argon, by using this purge gas as fuel gas for a fuel cell.

アンモニア合成工業では、水電解又は炭化水素類のスケ
ーム・リフオーミングによって製造された高純度の水素
ガスと液体空気から分離された窒素ガスとの混合ガスが
使用され、この混合ガスは繰返し使用される。この混合
ガスは、ｃｏ　、　ＣＯ２が触媒毒となるために、その
含有量が１０　ｐｐｂ以下のきわめて純度の高いもので
あるが、微量のアルゴンを含有し、このアルゴンは反応
で消費されないためにリサイクルの繰返しの間に徐々に
蓄積する。そしてアルゴンの含有量が所定の値、たとえ
ば一般に約１５％程度に達すると、このガスはパージさ
れ、多くの場合、ボイラの燃料として使われる。このパ
ージガスの組成は、水素約６５％窒素約２０％、アルゴ
ン約１５％、および微量のヘリウムである。アンモニア
合成の規模を一工場当り１０００　ｔａｎ／ｄａｙとす
ると、アンモニアＩ　Ｋｙ当り約２　ｍ３の水素ガスを
必要とするので、１日の５ 水素ガスの必要量は約２Ｘ１０ｍとなり、このうち２チ
の水素ガスがパージガスとして排出されるとすると、パ
ージガス中の水素の量は約１６７０ｍ５／１１ｒ　とな
る。水素の発熱量は２６５０　Ｋｃａし♂であるから、
水素の燃焼によって得られる水蒸気によりタービンを回
転させて発電させる通常の方法では、効率を３０チとし
て、発電量で約１５４０ＫＷに過ぎない。In the ammonia synthesis industry, a gas mixture of high purity hydrogen gas produced by water electrolysis or scale reforming of hydrocarbons and nitrogen gas separated from liquid air is used, and this gas mixture is used repeatedly. This mixed gas has an extremely high purity content of less than 10 ppb because CO and CO2 act as catalyst poisons, but it also contains a trace amount of argon, and this argon is not consumed in the reaction, so it cannot be recycled. gradually accumulates during repetition. When the argon content reaches a certain value, typically around 15%, this gas is purged and often used as boiler fuel. The composition of this purge gas is about 65% hydrogen, about 20% nitrogen, about 15% argon, and trace amounts of helium. If the scale of ammonia synthesis is 1000 tan/day per factory, approximately 2 m3 of hydrogen gas is required per I Ky of ammonia, so the required amount of hydrogen gas per day is approximately 2 x 10 m, of which 2 m3 is required per I Ky of ammonia. If hydrogen gas is discharged as purge gas, the amount of hydrogen in the purge gas will be approximately 1670 m5/11r. Since the calorific value of hydrogen is 2650 Kca,
In the conventional method of generating electricity by rotating a turbine using steam obtained by burning hydrogen, the amount of power generated is only about 1,540 kW, assuming an efficiency of 30 inches.

この発明は、アンモニア工業で発生する上記のようなパ
ージガスをさらに効率よく利用することについて鋭意研
究の結果、このパージガスがＣＯおよびＣＯ２をほとん
ど含有していないことに着目し、このパージガスを燃料
電池の水素燃料源と１゜て使用することにより、ボイラ
で燃焼させた場合と比較して著るしく有効に利用し得る
ことを見出し、この発明を完成するに至った。As a result of intensive research into more efficient use of the above-mentioned purge gas generated in the ammonia industry, this invention focused on the fact that this purge gas contains almost no CO and CO2. The present inventors have discovered that by using hydrogen as a fuel source at 1°, it can be used much more effectively than when it is combusted in a boiler, leading to the completion of this invention.

アルカリ溶液を電解液としたアルカリ燃料電池は、その
技術はすでに完成されており、一般に市販の水素ボンベ
から取出した水素ガスを水素源として運転されているが
、この水素ガス中には１〜３０　ｐｐｍ程度のＣ０９Ｃ
０２を′含有している。このｃｏ　、　Ｃｏ２　は、水
素とともにアルカリ燃料電池の水素極比供給されたとき
に、電解液中のナトリウムイオンと反応してＮａ２ＣＯ
３を生成する。この’Ｎａ２ＣＯ３は、水素極として使
われている電極物質を腐食するので、電極の寿命を短縮
する原因となる。The technology for alkaline fuel cells using an alkaline solution as an electrolyte has already been completed, and they are generally operated using hydrogen gas extracted from a commercially available hydrogen cylinder as a hydrogen source. C09C at around ppm
Contains 02'. When these co and Co2 are supplied together with hydrogen to the hydrogen electrode of an alkaline fuel cell, they react with sodium ions in the electrolyte to form Na2CO
Generate 3. This 'Na2CO3 corrodes the electrode material used as the hydrogen electrode, thereby shortening the life of the electrode.

ここで前述のアンモニア合成工業におけるノく一ジガス
に注目すると、そのＣ０２Ｃ０２含有量４↓、水素ボン
ベから取出された水素中の含有量に比較すればほとんど
ゼロに等しく・。したカーってこのノく−ジガスをアル
カリ燃料電池の水素源として使用すれば、Ｎａ２ＣＯ３
の生成量はきわめて少なくなり、電極寿命の短縮は起ら
な（・。Now, if we pay attention to the ammonia synthesis industry gas mentioned above, its C02C02 content is 4↓, which is almost zero compared to the content in the hydrogen extracted from the hydrogen cylinder. If this gas is used as a hydrogen source for an alkaline fuel cell, Na2CO3
The amount of produced is extremely small, and no shortening of the electrode life occurs (・.

またエネルギ効率の面からみると、アルカ１）燃料電池
のエネルギ変換効率しま一般に約７０％であるので、前
述のようにノく−ジガス中の水素の量カーｊ　６７０　
ｍ３／ｈｒ　であるとすると、燃料電池の出力は３６０
０　ＫＷ　Ｋ達する。Also, from the point of view of energy efficiency, the energy conversion efficiency of Alka 1) fuel cells is generally about 70%, so as mentioned above, the amount of hydrogen in the gas is 670%.
m3/hr, the output of the fuel cell is 360
0 KW K reached.

以上のように、この発明は、Ｃ０１Ｃ０２を＋１とんと
含有していないと（・う゛アンモニア合成工業における
パージガスの特性を利用し、ＣＯ、ＣＯ２の混入が電極
寿命を著ろしく短力・くするアルカ１）燃料電池のため
の新たな水素源とすることにより、このパージガスのエ
ネルギなさらに有効に矛１］用するとともに、電池自体
の長寿命化力−レま力・れると（・う効果が得られる・
。As described above, this invention utilizes the characteristics of the purge gas in the ammonia synthesis industry to avoid the use of alkali gases, which can significantly shorten the electrode life if CO and CO2 do not contain a large amount of C01C02. 1) By creating a new hydrogen source for fuel cells, the energy of this purge gas can be used more effectively, and the battery itself can have a longer lifespan. can get·
.

Claims (1)

【特許請求の範囲】[Claims] アンモニア合成工程で発生した水素、窒素およびアルゴ
ンを含み、Ｃ０１ＣＯ２を実質的に含まないパージガス
を、アルカ】ノ燃料電池に水素源として供給することを
特徴とするアンモニア合成工業におけるパージガスの有
効利用法。A method for effectively utilizing purge gas in an ammonia synthesis industry, which comprises supplying a purge gas containing hydrogen, nitrogen and argon generated in an ammonia synthesis process and substantially free of CO1CO2 to an alkali fuel cell as a hydrogen source.
JP58166142A 1983-09-09 1983-09-09 Effective use of purge gas in ammonia synthesis industry Pending JPS6059672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58166142A JPS6059672A (en) 1983-09-09 1983-09-09 Effective use of purge gas in ammonia synthesis industry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58166142A JPS6059672A (en) 1983-09-09 1983-09-09 Effective use of purge gas in ammonia synthesis industry

Publications (1)

Publication Number Publication Date
JPS6059672A true JPS6059672A (en) 1985-04-06

Family

ID=15825818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58166142A Pending JPS6059672A (en) 1983-09-09 1983-09-09 Effective use of purge gas in ammonia synthesis industry

Country Status (1)

Country Link
JP (1) JPS6059672A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5169717A (en) * 1988-07-01 1992-12-08 Haldor Topsoe A/S Method of preparing ammonia
JPH0837019A (en) * 1991-04-27 1996-02-06 Taimei Kinzoku Kogyo Kk Combined system of ozonizer and fuel cell
WO1996017395A1 (en) * 1994-11-28 1996-06-06 Dsm N.V. Use of a fuel cell in the chemical process industry

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5387975A (en) * 1976-12-15 1978-08-02 Ici Ltd Energy collection in chemical methods

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5387975A (en) * 1976-12-15 1978-08-02 Ici Ltd Energy collection in chemical methods

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5169717A (en) * 1988-07-01 1992-12-08 Haldor Topsoe A/S Method of preparing ammonia
JPH0837019A (en) * 1991-04-27 1996-02-06 Taimei Kinzoku Kogyo Kk Combined system of ozonizer and fuel cell
WO1996017395A1 (en) * 1994-11-28 1996-06-06 Dsm N.V. Use of a fuel cell in the chemical process industry
BE1008930A3 (en) * 1994-11-28 1996-10-01 Dsm Nv Use of a fuel cell in the chemical industry process.

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