JPS62105906A - Argon recovery from exhaustion gas in argon-oxygen smelting - Google Patents
Argon recovery from exhaustion gas in argon-oxygen smeltingInfo
- Publication number
- JPS62105906A JPS62105906A JP60241319A JP24131985A JPS62105906A JP S62105906 A JPS62105906 A JP S62105906A JP 60241319 A JP60241319 A JP 60241319A JP 24131985 A JP24131985 A JP 24131985A JP S62105906 A JPS62105906 A JP S62105906A
- Authority
- JP
- Japan
- Prior art keywords
- argon
- gas
- oxygen
- exhaust gas
- smelting
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B23/00—Noble gases; Compounds thereof
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
Description
【発明の詳細な説明】
ｊｒｒｊ−の利用分野
未発明はアルゴン・酸素吹錬法により溶鋼又は溶銑を精
錬する際に発生する排ガスからアルゴンを回収する方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The field of application of jrrj- is related to a method for recovering argon from the exhaust gas generated when refining molten steel or hot metal by an argon/oxygen blowing method.
クロムステンレス鋼、クロムニッケルステンレス鋼、Ｉ
ＩＩＰｌ熱鋼などの高クロム鋼（鉄）の精錬法として広
く採用されているアルゴン・酸素精錬法は１周知のよう
にクロムを酸化することなく脱）ノが可能でかつ良好な
品質が得られるが、高価なアルゴンを大、ｒｊ（１２〜
１５Ｎｍ’／溶鋼ｔ）に使用しなければならない。Chrome stainless steel, chrome nickel stainless steel, I
The argon/oxygen refining method, which is widely adopted as a refining method for high chromium steel (iron) such as IIPl hot steel, is well-known to be able to remove chromium without oxidizing it and to obtain good quality. However, expensive argon is used for large amounts of rj (12~
15Nm'/t of molten steel).
一方、アルゴンφ酸素精錬排ガスは外気を遮断して捕集
すると平均的にアルゴンを約３０％程度含んでいる。し
たがって当該排ガスに含まれるアルゴンを安価に分離す
ることができれば、これを循環ｉ’Ｔ使用することによ
りアルゴン濃度の低減をはかることができ、［業的にき
わめて有意義である。本発明はこのような（１的に適合
するものである。On the other hand, when the argon φ oxygen refining exhaust gas is collected with outside air blocked, it contains about 30% argon on average. Therefore, if the argon contained in the exhaust gas can be separated at a low cost, the argon concentration can be reduced by recycling it, which is extremely significant commercially. The present invention is adapted to such (1).
従来の技術
アルゴン・酸素精錬排ガスからアルゴンを回収する方法
としては下記のプロセスが知られている。BACKGROUND OF THE INVENTION The following process is known as a method for recovering argon from argon/oxygen refining exhaust gas.
（ａ）特開昭５４−１４９３９６号公報は当該排ガスを
外気と遮断して捕集し、酸素添加して一酸化炭素を二酸
化炭素に転換後、二酸化炭素に対し吸着能力を有する合
成ゼオライトと接触させて二酸化炭素を除去してアルゴ
ンを回収する方法を開示している。(a) JP-A-54-149396 discloses that the exhaust gas is isolated from the outside air and collected, oxygenated to convert carbon monoxide to carbon dioxide, and then contacted with synthetic zeolite that has the ability to adsorb carbon dioxide. discloses a method for removing carbon dioxide and recovering argon.
（ｂ）特開昭５９−１５９９１３号公報は外気と遮断し
て捕集した当該排ガス中の水素又は水素及び−酸化炭素
を当該排ガス中の酸素又は系外から供給する酸素によっ
て燃焼処理し、水素を水分に、−酸化）４素を二酸化炭
素に変換した後に、５Ａ型ゼオライト等を吸着剤とする
圧力変動吸着装置（以下ＰＳＡ ）により、水分、二酸
化炭素、窒素、−・酸化炭素を除去してアルゴンを回収
する方法を開示している。(b) JP-A-59-159913 discloses that hydrogen or hydrogen and carbon oxide in the exhaust gas, which is isolated from the outside air and collected, is subjected to combustion treatment using oxygen in the exhaust gas or oxygen supplied from outside the system. After converting the four elements (-oxidation) into water and carbon dioxide, water, carbon dioxide, nitrogen, and carbon oxide are removed using a pressure fluctuation adsorption apparatus (hereinafter referred to as PSA) using 5A type zeolite as an adsorbent. discloses a method for recovering argon.
発明が解決しようとする問題点
しかしながらこのような従来のプロセスにおいては下記
のような問題点が生じる。Problems to be Solved by the Invention However, the following problems occur in such conventional processes.
ひとつには吸７１装置に導入されるガス中のアルゴン濃
度が低く、被眼１１物買即ち（ａ）プロセスでは二醜化
炭、紺、（ｂ）プロセスでは−・酸化）↓２．）、又は
二酸化炭素のＣ）朗が高いので、装置が大型化し濃度の
１−昇を招くことになることである。One reason is that the argon concentration in the gas introduced into the suction 71 device is low, and the argon concentration in the gas introduced into the suction device 71 is low. ) or C) of carbon dioxide is high, the equipment becomes larger and the concentration increases by 1-1.
他のひとつには、排ガス中の一酸化炭素や水素を燃焼さ
せるために酸素を供給する方式をとっているため、燃焼
後のガス中に後り程の吸着塔にとって難吸着成分となる
酸ぶが含有されることになることである。ゼオライトを
吸着剤とする ＰＳＡυ、において常温ではアルゴンと
酸素を分離することが非常に困難であることは周知のと
おりであり、従って前記の方式では、燃焼後の残存酸素
が回収アルゴン中に同伴するため、高ｅ度の回収アルゴ
ンが得られないという欠点が生じることとなる（ちなみ
に前記（ａ）プロセスの実施例では回収アルゴン中の酸
素ｅ度は６．７％となっている。）。Another reason is that oxygen is supplied to burn the carbon monoxide and hydrogen in the exhaust gas, so acid residues, which are difficult to adsorb to the adsorption tower later on, are added to the gas after combustion. will be contained. It is well known that it is extremely difficult to separate argon and oxygen at room temperature in PSAυ, which uses zeolite as an adsorbent.Therefore, in the above method, the residual oxygen after combustion is entrained in the recovered argon. Therefore, a disadvantage arises in that recovered argon having a high e degree cannot be obtained (by the way, in the example of the process (a), the oxygen e degree in the recovered argon is 6.7%).
従って従来法によれば回収アルゴン濃度が低いために、
その使用法が限定されると八にメークアップ用市販アル
ゴンとｑ′換的に取扱うことができないので、循環再使
用のために別に受けいれ設備を設置する必要があり、取
扱いも複雑になるなど実用的な問題がある。Therefore, according to the conventional method, the recovered argon concentration is low, so
If its usage is limited, it cannot be handled in the same way as commercially available argon for make-up, so separate receiving equipment must be installed for cyclical reuse, making handling complicated and impractical. There is a problem.
本発明はアルゴン・酸素精錬排ガスからアルゴンを回収
する方法として、上記従来技術の問題点を解決し、コン
パクトな装置でしかも市販アルゴン濃度レベル（アルゴ
ン濃度９９．８％以上）のアルゴンを回収し、これを循
ｍ Ｉ’ｆ使用することによりアルゴン濃度の低減、ひ
いては高クロム鋼（鉄）等精錬材の精錬濃度を低減させ
る新たな方法を提供することを目的とするものである。The present invention is a method for recovering argon from argon/oxygen refining exhaust gas, which solves the problems of the prior art described above, and recovers argon at a commercially available argon concentration level (argon concentration of 99.8% or more) using a compact device. The purpose of this invention is to provide a new method for reducing the argon concentration and, by extension, the refining concentration of refined materials such as high chromium steel (iron) by using this circulating material.
問題点を解決するための手段
本発明はアルゴン・酸素吹錬法により溶鋼又は溶銑を精
錬するに際し発生する排ガスのうち、アルゴン濃度の高
い精錬終期の排ガスを外気を遮断して捕集し、た後吸着
塔に導入しアルゴンを回収する方法において、外気を遮
断して捕集した精錬終期の排ガス中に含まれる酸素を、
１Ｓ前に外気を遮断して捕集した一酸化炭素濃度の高い
精錬初期か又は精錬中期の排ガスあるいは系外から供給
する一酸化炭素と灰地させることにより二酸化炭素に転
換した後、二酸化炭素及び窒２もに対して吸着能力をイ
Ｉする吸呑剤を用いた圧力変動吸着装置に導入すること
を特徴とするアルゴン・Ｉ’ｌｌ 素ｔ、’ｌ錬排ガス
からのアルゴン回収方法である。Means for Solving the Problems The present invention is designed to collect the exhaust gas at the end of refining, which has a high argon concentration, by shutting off the outside air, among the exhaust gases generated when refining molten steel or hot metal by the argon/oxygen blowing method. In the method of recovering argon by introducing it into a post-adsorption tower, the oxygen contained in the exhaust gas at the end of refining, which is collected by blocking the outside air, is
After converting into carbon dioxide by ashing with exhaust gas from the early or middle stage of smelting that has a high concentration of carbon monoxide collected by shutting off the outside air before 1S or from the carbon monoxide supplied from outside the system, carbon dioxide and This is a method for recovering argon from argon exhaust gas, which is characterized by introducing the argon into a pressure fluctuation adsorption device using an absorbent having a high adsorption capacity for nitrogen.
作用
７ ／Ｌ／ ｊン・酸素精錬排ガスよりアルゴンを回収
することを１１的として外気と遮断してυ１ガスの捕集
を行う場合、完全なシールは技術的ないし経済的に困難
で若１２の外気の混入はさけられない。この場合の精錬
期間内の当該排ガスの組成の−・例をあげると表１のよ
うになる。Effect 7 /L/J-Oxygen When collecting argon from the exhaust gas by shutting it off from the outside air and collecting υ1 gas, it is technically and economically difficult to achieve a complete seal. Mixing of outside air cannot be avoided. An example of the composition of the exhaust gas during the refining period in this case is as shown in Table 1.
（以ド余白）
表１．アルゴン・酸素精錬排ガス組成（例）表１から明
らかな如く、精錬初期及び中期の排ガスの主要成分は一
酸化炭素であるが、精錬終期の枡ガス中には一酸化炭素
は含まれていなく９０％以にのアルゴンを含むガスが得
られる。しかしながらアルコン濃度９９．８％の重数ア
ルゴンＣＩＪｌＦレベルのアルゴンを回収する場合にお
いては、精錬終１１）１排ガスのみを選別捕集しても、
排ガス中に含まれる酸素濃度が無視出来ない。(Here are blank spaces) Table 1. Argon/Oxygen Refining Exhaust Gas Composition (Example) As is clear from Table 1, the main component of the exhaust gas in the early and middle stages of refining is carbon monoxide, but the gas at the end of refining does not contain carbon monoxide.90 % or more of argon is obtained. However, in the case of recovering argon at CIJIF level with an alcone concentration of 99.8%, even if only the exhaust gas at the end of refining is selectively collected,
The oxygen concentration contained in exhaust gas cannot be ignored.
■！ｕち一般的な合成ゼオライト等を吸着剤とするＰＳ
Ａ法により、当該排ガス中の窒素を吸着除去しｒ１＃タ
トシテモ、”＋ ＋１ｋ ＋Ａ ガス中ノＭ Ｊ＜ カ
＋ｉｉｉ 記吸１ｒ ６１に対して難吸石成分となるた
めに、ｂ＋ｌ ｌ−難吸ｒ、成分であるアルコン中に回
イｔして回収されることとなる。従ってＣ度の高いアル
ゴンを回収するにはアルボ／に対して酸２も及び窒素を
選択的に吸５γ１する特殊な吸箔剤を採用するか、又は
低ＬＬＡ吸γ、法の適用等の特別な１段が必要となって
くる。■! PS using general synthetic zeolite etc. as an adsorbent
By method A, the nitrogen in the exhaust gas is adsorbed and removed, and it becomes a difficult-to-sorb stone component with respect to r1 r, it will be recovered by circulating it in alcon, which is a component.Therefore, in order to recover argon with a high degree of C, a special method that selectively absorbs acid 2 and nitrogen 5γ1 for albo/ is used. It becomes necessary to adopt a foil absorption agent or to take a special step such as applying a low LLA absorption gamma method.
そこで本発明では、精錬終期排ガスを選別捕集して、高
濃度のアルゴンをＰＳＡ法により回収する際にネックと
なるｌＪｊガス中の酎７もに７１１ＩＩ、、これを精錬
初期か又は精錬中期の一酸化炭２）ミ含イ１ニーの多い
朔ガスかあるいは系外から供給する一酸化炭素と反ｊε
（燃焼）せしめて二酸化炭素に転換したのち、 ＰＳＡ
システムに導入することにした。このため排ガスは難吸
γｉ成分である酸素が無くなりアルゴン、二酸化炭憲及
び窒素の混合ガスとなるので、例えば５Ａ型セオライト
でアルゴンと二酸化炭素、窒素に分＃呵能となる。Therefore, in the present invention, the exhaust gas at the end of refining is selectively collected and 711II, which is a bottleneck in recovering high-concentration argon by the PSA method, is collected in the early or middle stage of refining. Carbon monoxide 2) Carbon monoxide and carbon gas supplied from outside the system
(Combustion) After at least converting to carbon dioxide, PSA
I decided to implement it into the system. For this reason, the exhaust gas loses oxygen, which is a difficult-to-absorb γi component, and becomes a mixed gas of argon, carbon dioxide, and nitrogen. For example, 5A type theolite can separate argon, carbon dioxide, and nitrogen.
実施例
以ド、図面によって本発明の一′、−Ｃｋ例を具体的に
説明する。Examples 1' and -Ck of the present invention will be specifically explained with reference to the drawings.
第１図は未発り１方法を実施するための設備の一例の説
明図である。アルゴン・酸素精錬において 精錬炉１に
装入された溶鋼（銑）２の中に、ｍｒ １ｆ（イーを近
に設置された羽口３から、アルゴンホルタ−１４より占
られたアルゴンと酸素ホルタ−１６より送られた酸７）
↓との混合ガス４を吹き込んで吹錬するとき１高温の精
錬排ガス５が発生する。FIG. 1 is an explanatory diagram of an example of equipment for carrying out the first method. In argon/oxygen refining, molten steel (pig) 2 charged into the smelting furnace 1 is filled with mr 1f (e) from the tuyere 3 installed nearby, and argon and oxygen halved from the argon holter 14. Acid sent from 16 7)
When blowing is performed by blowing a mixed gas 4 with ↓, high-temperature refining exhaust gas 5 is generated.
この高温の排ガスのうち精錬初期かヌは精錬中期の一酸
化炭素を太ｊ、１に含む排ガスの一部（後述する精錬終
期排ガス中の酸素をＴ、酸化ＩＲ素に転換するに必安な
賃で良い。）は外気を遮断したフート６、燃焼室７を通
り冷却器８に入る。ここで排ガスは冷却され１次いで集
しん機９．吸引ファン１０を通って排ガスホルダー１７
に断種される。Among this high-temperature exhaust gas, part of the exhaust gas that contains carbon monoxide during the middle stage of refining (it is essential for converting oxygen in the exhaust gas at the end of refining to T, IR element, which will be described later). ) enters the cooler 8 through a foot 6 that blocks outside air and a combustion chamber 7. Here, the exhaust gas is cooled first and then in a collector 9. Exhaust gas holder 17 passes through suction fan 10
be sterilized.
次いで、精錬終期の高温排ガス５は、外気を遮断したツ
ー１’ ６を通り、高温のまま燃焼室７へ至る。ここで
当該排ガス中に含まれる酸素は、排ガスホルタ−１７に
貯槽され、圧縮機１８、排ガス供給ダクＩ・１９を心っ
て送られてくる精錬初期か又は精錬中期ガスに含まれる
−・酸化炭、もと接触し、醇２＋。Next, the high-temperature exhaust gas 5 at the final stage of refining passes through the two 1' 6 that is blocked from the outside air, and reaches the combustion chamber 7 while remaining at high temperature. Here, the oxygen contained in the exhaust gas is stored in the exhaust gas holter 17 and is contained in the gas in the early stage of refining or in the middle stage of refining that is sent to the compressor 18 and the exhaust gas supply duct I/19. Charcoal, original contact, 2+.
が−酸化）架素の燃焼にあすかることにより二酸化）で
、ｋに転換する。- oxidation) is converted to k by combustion of hydrogen (dioxide).
なお燃焼室７には、酸ふと一酸化１父７）、の反応（燃
焼）効−トを高めるための適切な触媒を充ｒｉｉ Ｌで
も良い。なお、燃焼室７に供給する−・酸化炭素は系外
からたとえば、ホンへ等から供給しても良いが、精錬初
１す１か又は中期の枡ガス又はホンへ等から供１合する
ガスはいずれにしても精ｔ！Ｉ！ル冬１す１１井ガス中
に含まれる酸素との反Ｉ５に消費するに必要な鼓車の：
ｌｉか望ましい。Incidentally, the combustion chamber 7 may be filled with a suitable catalyst for increasing the reaction (combustion) efficiency of acid and monoxide (7). Incidentally, the carbon oxide supplied to the combustion chamber 7 may be supplied from outside the system, for example, from the furnace, etc., but it is also possible to supply the carbon oxide from outside the system, for example, from the gas at the beginning or middle stage of refining, or from the gas fed from the furnace, etc. In any case, it's great! I! The oxygen contained in the winter 1st and 11th wells of gas is required to be consumed by the I5:
li or desirable.
燃焼室７において酸２Ｆ８が一゛、酸化炭本に転換する
ことにより、その成分がアルゴン、−酸化炭素及び′ネ
諌、となった１非ガスは、伶ノ４［器８番こはいり、こ
こで畠温以ドに冷）Ｊｌされた後 失しん’Ａ：： ９
、吸引ファンｌＯを（イて、徘ガスホルグ−１１に１
佇槽される。In the combustion chamber 7, the acid 2F8 is converted into carbon oxide, and the non-gas whose components are argon, carbon oxide, and carbon oxide, is At this point, Atsushi Hatake is very cold) After being rejected, I lost my mind. A:: 9
, turn on the suction fan lO (to the Wandering Gasholg-11)
It will be kept in a tank.
さらに当該ガスをＰＳＡシステム１２へ導入し、アルゴ
ンと゛、醇化炭（、及び′器２番、？二′・１課すると
、高濃度のアルゴンか回収される。この回収アルゴンは
メータアンプ用市販アルゴン１５とＪｊ−換的に取扱う
ことか出来るので、回収アルゴンダクト１３を油ってア
ルゴンホルダー１４へ送られＭ使用される。Further, the gas is introduced into the PSA system 12 and charged with argon, argon, and charcoal (and Since it can be handled interchangeably with 15 and Jj, the oil is sent through the recovery argon duct 13 to the argon holder 14 and used.
ここで使用されるＰＳＡシステムには二酸化炭素及び窒
素に対して吸着能力を有する吸着剤、例えば５Ａ型ゼオ
ライトを充填した２本以上の吸着塔列と配管、自動ｖｊ
替弁及び制御機構、周辺機器から構成される公知のもの
である。The PSA system used here includes two or more adsorption tower rows and piping filled with an adsorbent capable of adsorbing carbon dioxide and nitrogen, such as 5A type zeolite, and an automatic vj
This is a known system consisting of a replacement valve, a control mechanism, and peripheral equipment.
発明の詳細
な説明したように５本発明によればアルゴン・酸素吹錬
法により溶鋼（銑）を精錬する際に発生する精錬排ガス
のうち、アノＣボン濃度の高い精錬終期の排ガス中に含
まれ、吸着装置にとって難吸着成分となる酸素を、易吸
着成分である二酸化炭素に転換した後、吸着装置に導入
することにより、吸着装置に導入されるガスのアルゴン
濃度がＴ’ｌ’１１ くなるので、装置がコンパクトに
なり、設備費か安くなる。As described in detail of the invention, 5. According to the present invention, among the refining exhaust gases generated when molten steel (pig) is refined by the argon/oxygen blowing method, the exhaust gas at the end of refining with a high concentration of AnoC-bon is contained. By converting oxygen, which is a component that is difficult to adsorb to the adsorption device, into carbon dioxide, which is an easily adsorbed component, and then introducing it into the adsorption device, the argon concentration of the gas introduced into the adsorption device is reduced to T'l'11. This makes the device more compact and reduces equipment costs.
又、市販アルゴン濃度レベル（アルゴン濃度９９．８％
）以ヒのアルゴンの回収がｉＴ能となった。In addition, commercially available argon concentration level (argon concentration 99.8%
) The recovery of argon became an iT function.
この回収アルゴンはメークアップ用型１反アルゴンと完
全に７ｊ−換作を持って取扱うことができることは勿論
、更にはその他のアルゴン使用設備へ供給するためのア
ルゴン源にもなる等の効果を−１−げろことが出来た。Not only can this recovered argon be used in complete exchange with Type 1 anti-argon for makeup, but it can also be used as an argon source for other argon-using equipment. 1- I was able to vomit.
しかしてアルゴン濃度の低減ひいては高クロム鋼等の精
錬濃度低減に多大に１′（献出来ることとなった。As a result, a large amount of 1'(1') can be contributed to reducing the argon concentration and, in turn, reducing the refining concentration of high chromium steel.
４．１４面の筒中な１悦明
第１図は本発明方法を実施するための設備の一例の説明
図である。Figure 1 is an explanatory diagram of an example of equipment for carrying out the method of the present invention.
ｌ・・・精錬炉、２・・会溶鋼（銑）、３・・・羽１」
、４４・・アルゴン香酸素混合ガス、５・・・精錬排ガ
ス、６・・・フード、７・・・燃焼室、８・・・冷却器
、９・・―集しん器、１０・・Φ吸引ファン、ＩＩ・・
・徘ガスホルダー、１２・・◆ ＰＳＡシステム、１３
・命φ回収アルゴンダクト。l...Refining furnace, 2...Metal steel (pig), 3...Feather 1"
, 44...Argon scented oxygen mixed gas, 5...Refining exhaust gas, 6...Hood, 7...Combustion chamber, 8...Cooler, 9...-Collector, 10...Φ suction Fan, II...
・Wandering gas holder, 12...◆ PSA system, 13
・Lifeφ recovery argon duct.
１４・ａｓアルゴンホルタ−１１５φ・・市販アルゴン
、１８１１−◆酸素ホルター１１７・Φ・排ガスホルタ
−５１８・・・圧縮機、 １９・・・排ガス供給ダクト
。14.as argon holter-115φ... commercially available argon, 1811-◆oxygen holter 117.φ/exhaust gas holter-518...compressor, 19...exhaust gas supply duct.
Claims (1)
するに際し発生する排ガスのうち、アルゴン濃度の高い
精錬終期の排ガスを外気を遮断して捕集した後吸着塔に
導入しアルゴンを回収する方法において、外気を遮断し
て捕集した精錬終期の排ガス中に含まれる酸素を、事前
に外気を遮断して捕集した一酸化炭素濃度の高い精錬初
期か又は精錬中期の排ガスあるいは系外から供給する一
酸化炭素と反応させることにより二酸化炭素に転換した
後、二酸化炭素及び窒素に対して吸着能力を有する吸着
剤を用いた圧力変動吸着装置に導入することを特徴とす
るアルゴン・酸素精錬排ガスからのアルゴン回収方法。(1) Among the exhaust gases generated when refining molten steel or hot metal using the argon/oxygen blowing method, the exhaust gas at the end of refining with a high argon concentration is collected by blocking the outside air, and then introduced into an adsorption tower to recover argon. In this method, the oxygen contained in the exhaust gas at the final stage of smelting that has been collected by shutting off the outside air is extracted from the exhaust gas from the early or middle stage of smelting that has a high concentration of carbon monoxide, which has been collected by shutting off the outside air in advance, or from outside the system. Argon/oxygen refining exhaust gas characterized in that it is converted into carbon dioxide by reacting with supplied carbon monoxide and then introduced into a pressure fluctuation adsorption device using an adsorbent that has an adsorption capacity for carbon dioxide and nitrogen. How to recover argon from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60241319A JPS62105906A (en) | 1985-10-30 | 1985-10-30 | Argon recovery from exhaustion gas in argon-oxygen smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60241319A JPS62105906A (en) | 1985-10-30 | 1985-10-30 | Argon recovery from exhaustion gas in argon-oxygen smelting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62105906A true JPS62105906A (en) | 1987-05-16 |
Family
ID=17072521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60241319A Pending JPS62105906A (en) | 1985-10-30 | 1985-10-30 | Argon recovery from exhaustion gas in argon-oxygen smelting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62105906A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7731782B2 (en) | 2007-05-18 | 2010-06-08 | Exxonmobil Research And Engineering Company | Temperature swing adsorption of CO2 from flue gas utilizing heat from compression |
| US7959720B2 (en) | 2007-05-18 | 2011-06-14 | Exxonmobil Research And Engineering Company | Low mesopore adsorbent contactors for use in swing adsorption processes |
-
1985
- 1985-10-30 JP JP60241319A patent/JPS62105906A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7731782B2 (en) | 2007-05-18 | 2010-06-08 | Exxonmobil Research And Engineering Company | Temperature swing adsorption of CO2 from flue gas utilizing heat from compression |
| US7959720B2 (en) | 2007-05-18 | 2011-06-14 | Exxonmobil Research And Engineering Company | Low mesopore adsorbent contactors for use in swing adsorption processes |
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