JPH0353014B2 - - Google Patents

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Publication number
JPH0353014B2
JPH0353014B2 JP59145062A JP14506284A JPH0353014B2 JP H0353014 B2 JPH0353014 B2 JP H0353014B2 JP 59145062 A JP59145062 A JP 59145062A JP 14506284 A JP14506284 A JP 14506284A JP H0353014 B2 JPH0353014 B2 JP H0353014B2
Authority
JP
Japan
Prior art keywords
adsorbent
weight
carbon monoxide
mesh
particle size
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 - Lifetime
Application number
JP59145062A
Other languages
Japanese (ja)
Other versions
JPS6125638A (en
Inventor
Hiroshi Kitagawa
Chuji Juki
Koji Fukuda
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.)
Nippon Sanso Corp
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Nippon Sanso Corp
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 Agency of Industrial Science and Technology, Nippon Sanso Corp filed Critical Agency of Industrial Science and Technology
Priority to JP59145062A priority Critical patent/JPS6125638A/en
Publication of JPS6125638A publication Critical patent/JPS6125638A/en
Publication of JPH0353014B2 publication Critical patent/JPH0353014B2/ja
Granted legal-status Critical Current

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  • Carbon And Carbon Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は新規な一酸化炭素吸着剤及びその製造
方法に関するものである。 一酸化炭素は、有毒性のガスであるが、同時に
重要な化学原科でもあり、メタノール等の有機化
合物の合成原料として用いられている。 一酸化炭素は、従来、石炭やコークスと空気又
は加熱水蒸気とを反応させることによつて生成さ
れるが、工業プロセスで副生されるものも多い。
例えば、一酸化炭素は、高炉、転炉、小型平電炉
等のプロセス排ガス中に含まれる他、カーボンブ
ラツク製造排ガス中にも含まれる。近年、このよ
うな排ガス中に含まれる一酸化炭素を分離回収
し、化学原料として有効利用することが検討され
ているが、従来の一酸化炭素分離技術、例えば、
深冷分離法や、溶液吸収法等は、分離コストが高
く、未だ満足し得るものではなかつた。 特開昭58−156517号公報によれば、活性炭のハ
ロゲン化銅を担持させた吸着剤を用いて一酸化炭
素を吸着分離する方法が示されている。この方法
は、従来の深冷分離法や溶液吸収法等に比べ、操
作が簡単であり、分離コスト的にも比較的安価で
あるが、吸着剤原料として活性炭を用いる必要が
あること及びハロゲン化銅を溶液として活性炭に
含浸させる必要があること等の点で、吸着剤の製
造コストが高くなり、また廃液が生じる等の問題
がある。 本発明者らは、前記した従来の一酸化炭素吸着
剤とは異なり、安価でかつ一酸化炭素吸着性にす
ぐれた吸着剤を開発すべく鋭意研究を重ねた結
果、ハロゲン化銅粉末と炭化物粉末とバインダー
との混合物を顆粒状に成形し、非酸化性雰囲気中
で焼成する時に、一酸化炭素の吸着性にすぐれた
吸着剤が得られることを見出し、本発明を完成す
るに至つた。 本発明で用いる炭化物としては、従来公知のも
のが使用され、石炭、コークス、石炭チヤー、石
油又は石炭ピツチ炭化物等があり、又、本発明に
おいては活性炭も使用可能であるが、コスト的に
見た場合、このものの使用は余り有利ではない。
本発明においては、これらの炭化物は、微粉末
状、通常、100メツシユ以下の粒度で使用される。
ハロゲン化銅としては、1価及び2価の銅のハロ
ゲン化物が用いられ、このようなものとしては、
塩化第1銅、臭化第1銅、塩化第2銅、臭化第2
銅等が挙げられる。これらのハロゲン化銅は、微
粉末状、通常、100メツシユ以下の粒度で用いら
れる。 本発明の吸着剤を製造するには、前記した炭化
物と粉末(以下、単に炭化物とも言う)とハロゲ
ン化銅粉末(以下、単にハロゲン化銅とも言う)
に、さらにバインダーを加え、これらを均一に混
合する。この場合、バインダーとしては、熱分解
性のもの、即ち、後続の焼成工程において熱分解
し得る有機系のバインダーが用いられる。このよ
うなものとしては、例えば、有機系のものとして
は、亜硫酸パルプ廃液、ブドウ糖等の有機化合物
の他、ポリエチレンや、ポリスチレン、酢酸ビニ
ル系重合体等の各種の高分子エマルジヨンが挙げ
られ、本発明において、前記したハロゲン銅と炭
化物とバインダーとの混合物を得る場合、炭化物
とハロゲン化銅との使用割合は、一般的には、炭
化物80〜98重量%、好ましくは85〜95重量%、及
びハロゲン銅20〜2重量%、好ましくは15〜5重
量%であり、またバインダーの使用量は、一般的
には、ハロゲン化銅と炭化物との合計の100重量
部に対し、5〜40重量部、好ましくは10〜30重量
部である。 次に、前記した混合物は、これを、慣用の方法
により、顆粒状に成形し、焼成する。この場合、
焼成温度は、ハロゲン化銅の融点以下、通常、
250〜400℃、好ましくは300〜350℃程度であり、
焼成は非酸化性雰囲気、通常、窒素ガスや炭酸ガ
ス等の不活性ガス中で行う。また、顆粒状に成形
する場合、その具合的形状は任意であり、球状、
円柱状等が採用され、その寸法は、通常、0.5〜
5mm、好ましくは1〜2mm程度である。 本発明の吸着剤は、前記した従来のハロゲン化
銅含浸活性炭とは異なり、ハロゲン化銅と炭化物
を主成分とする混合物からなるもので、ハロゲン
化銅は、炭化物粒子間に介在した構造を有し、全
体としては多孔質構造を有している。この吸着剤
に、一酸化炭素を含むガスを接触させると、ガス
中から一酸化炭素を選択的に吸着する。この場合
の吸着機構は明確には解明されていないが、全体
的には、ハロゲン化銅による化学吸着が主反応と
して起り、炭化物がその触媒的作用を示すものと
考えられる。 本発明の吸着剤は、一酸化炭素を含む種々の排
ガスから、その一酸化炭素を吸着分離するための
吸着剤として適用され、この場合、一酸化炭素を
吸着した吸着剤は、これを加熱することによつ
て、吸着した一酸化炭素を脱離させることがで
き、また脱離後の吸着剤は再び一酸化炭素の吸着
分離に適用することができる。また、本発明の吸
着剤は、そのすぐれた一酸化炭素吸着性を利用
し、防毒マスク用の吸着剤等としても利用するこ
とができる。 次に、本発明を実施例によりさらに詳細に説明
する。なお、以下において示す部及び%はいずれ
も重量基準である。 実施例 A:吸着剤の製造 (1) 吸着剤A−1 非粘結炭(ヤルーン炭)チヤーを粒度100メ
ツシユ以下に粉砕し、この粉砕物95部に、塩化
第1銅5部とバインダーとしての亜硫酸パルプ
廃液25部を加え、これを均一に混合した後、押
出成形機を用いて、直径1mm、長さ2mmの円柱
状ペレツトに成形し、この成形物を窒素ガス雰
囲気中で温度330℃で焼成して、吸着剤A−1
を得た。 (2) 吸着剤A−2 前記吸着剤A−1の製造において、焼成温度
350℃を用いた以外は同様にして、吸着剤A−
2を得た。 (3) 吸着剤A−3 前記吸着剤A−1の製造において、粘結炭チ
ヤー90部及び塩化第1銅10部をそれぞれ用いた
以外は同様にして、吸着剤A−3を得た。 (4) 吸着剤A−4 前記吸着剤A−1の製造において、粘結炭チ
ヤー80部及び塩化第1銅20部を用い、かつ焼成
温度330℃を用いた以外は同様にして、吸着剤
A−4を得た。 (5) 吸着剤A−5 前記吸着剤A−4の製造において、焼成温度
360℃を用いた以外は同様にして、吸着剤A−
5を得た。 (6) 吸着剤A−6 前記吸着剤A−4の製造において、バインダ
ーとしてカオリン35部を用い、焼成温度300℃
を用いた以外は同様にして、吸着剤A−6を得
た。 B:吸着試験 本発明吸着剤を直径2.3cm、長さ50cmのステン
レス製カラムに充填し、このカラムに一酸化炭素
5%を含む窒素ガスを流通させ、カラム出口をガ
スの一酸化炭素濃度をガスクロマトグロフで2分
間間隔で分析した。その結果を表−1に示す。 また、比較のために、活性炭、非粘結炭チヤ
ー、塩化第1銅16重量%含浸非粘結炭チヤー(B
−1)及び塩化第1銅11重量%含浸非粘結炭チヤ
ー(B−2)をそれぞれ用いて同様の吸着試験を
行つた。なお、前記塩化第1銅含浸非粘結炭チヤ
ーB−1及びB−2は、非粘結炭(ヤルーン炭、
粒度100メツシユ以下)に、塩化第1銅水溶液を
含浸させた後、150℃で乾燥してそれぞれ製造し
たものである。また、表中に示した破過時間は、
ガスの流通始後、カラム出口ガス中の一酸化炭素
濃度が0.025%になるまでの時間を意味する。
The present invention relates to a novel carbon monoxide adsorbent and a method for producing the same. Although carbon monoxide is a toxic gas, it is also an important chemical source and is used as a raw material for the synthesis of organic compounds such as methanol. Carbon monoxide is conventionally produced by reacting coal or coke with air or heated steam, but carbon monoxide is also often produced as a by-product in industrial processes.
For example, carbon monoxide is not only contained in process exhaust gas from blast furnaces, converters, small flat electric furnaces, etc., but also in carbon black manufacturing exhaust gas. In recent years, it has been considered to separate and recover carbon monoxide contained in such exhaust gas and use it effectively as a chemical raw material, but conventional carbon monoxide separation techniques, such as
Cryogenic separation methods, solution absorption methods, and the like have high separation costs and have not yet been satisfactory. JP-A-58-156517 discloses a method of adsorbing and separating carbon monoxide using an adsorbent on which copper halide of activated carbon is supported. This method is easier to operate and relatively inexpensive in terms of separation cost than conventional cryogenic separation methods, solution absorption methods, etc., but it requires the use of activated carbon as the adsorbent raw material and halogenated Since it is necessary to impregnate activated carbon with copper in the form of a solution, the manufacturing cost of the adsorbent increases and there are problems such as waste liquid being generated. The present inventors have conducted intensive research to develop an adsorbent that is inexpensive and has excellent carbon monoxide adsorption properties, unlike the conventional carbon monoxide adsorbents mentioned above. The present inventors have discovered that an adsorbent with excellent carbon monoxide adsorption properties can be obtained when a mixture of carbon monoxide and a binder is formed into granules and fired in a non-oxidizing atmosphere, leading to the completion of the present invention. As the carbide used in the present invention, conventionally known carbides are used, such as coal, coke, coal coal, petroleum or coal pitch carbide, etc.Although activated carbon can also be used in the present invention, from a cost perspective. In this case, its use is not very advantageous.
In the present invention, these carbides are used in the form of fine powder, usually with a particle size of 100 mesh or less.
As the copper halide, monovalent and divalent copper halides are used, and these include:
Cuprous chloride, cuprous bromide, cupric chloride, cupric bromide
Examples include copper. These copper halides are used in fine powder form, usually with a particle size of 100 mesh or less. To produce the adsorbent of the present invention, the above-mentioned carbide and powder (hereinafter also simply referred to as carbide) and copper halide powder (hereinafter also simply referred to as copper halide) are used.
Then add the binder and mix them uniformly. In this case, the binder used is a thermally decomposable one, that is, an organic binder that can be thermally decomposed in the subsequent firing step. Examples of such materials include organic compounds such as sulfite pulp waste liquid and glucose, as well as various polymer emulsions such as polyethylene, polystyrene, and vinyl acetate polymers. In the invention, when obtaining the above-described mixture of copper halide, carbide, and binder, the proportion of carbide and copper halide used is generally 80 to 98% by weight of carbide, preferably 85 to 95% by weight, and The amount of copper halide is 20 to 2% by weight, preferably 15 to 5% by weight, and the amount of binder used is generally 5 to 40 parts by weight per 100 parts by weight of the total of copper halide and carbide. , preferably 10 to 30 parts by weight. Next, the mixture described above is formed into granules by a conventional method and fired. in this case,
The firing temperature is below the melting point of copper halide, usually
250~400℃, preferably about 300~350℃,
Firing is performed in a non-oxidizing atmosphere, usually an inert gas such as nitrogen gas or carbon dioxide gas. In addition, when molding into granules, the specific shape can be arbitrary, such as spherical,
A cylindrical shape etc. is adopted, and its dimensions are usually 0.5~
It is about 5 mm, preferably about 1 to 2 mm. The adsorbent of the present invention is different from the conventional activated carbon impregnated with copper halide described above, and is made of a mixture containing copper halide and carbide as main components, and the copper halide has a structure interposed between carbide particles. However, it has a porous structure as a whole. When this adsorbent is brought into contact with a gas containing carbon monoxide, it selectively adsorbs carbon monoxide from the gas. Although the adsorption mechanism in this case has not been clearly elucidated, it is generally thought that chemical adsorption by copper halide occurs as the main reaction, and the carbide exhibits a catalytic action. The adsorbent of the present invention is applied as an adsorbent for adsorbing and separating carbon monoxide from various exhaust gases containing carbon monoxide, and in this case, the adsorbent that has adsorbed carbon monoxide is heated. In this way, the adsorbed carbon monoxide can be desorbed, and the adsorbent after desorption can be used again for adsorptive separation of carbon monoxide. Further, the adsorbent of the present invention can be used as an adsorbent for gas masks, etc. by utilizing its excellent carbon monoxide adsorption properties. Next, the present invention will be explained in more detail with reference to Examples. Note that all parts and percentages shown below are based on weight. Example A: Manufacture of adsorbent (1) Adsorbent A-1 Non-caking coal (Yaloon charcoal) char was ground to a particle size of 100 mesh or less, and 95 parts of this ground material was added with 5 parts of cuprous chloride as a binder. After adding 25 parts of sulfite pulp waste liquid and mixing it uniformly, it was molded into a cylindrical pellet with a diameter of 1 mm and a length of 2 mm using an extruder, and the molded product was heated at a temperature of 330°C in a nitrogen gas atmosphere. After baking, adsorbent A-1
I got it. (2) Adsorbent A-2 In the production of the above-mentioned adsorbent A-1, the calcination temperature
Adsorbent A-
I got 2. (3) Adsorbent A-3 Adsorbent A-3 was obtained in the same manner as in the production of Adsorbent A-1, except that 90 parts of coking carbon char and 10 parts of cuprous chloride were used. (4) Adsorbent A-4 An adsorbent was produced in the same manner as in the production of the above-mentioned adsorbent A-1, except that 80 parts of coking coal coal and 20 parts of cuprous chloride were used, and the calcination temperature was 330°C. A-4 was obtained. (5) Adsorbent A-5 In the production of the above-mentioned adsorbent A-4, the calcination temperature
Adsorbent A-
Got 5. (6) Adsorbent A-6 In the production of the above-mentioned adsorbent A-4, 35 parts of kaolin was used as a binder, and the firing temperature was 300°C.
Adsorbent A-6 was obtained in the same manner except that . B: Adsorption test The adsorbent of the present invention was packed into a stainless steel column with a diameter of 2.3 cm and a length of 50 cm, nitrogen gas containing 5% carbon monoxide was passed through the column, and the carbon monoxide concentration of the gas was It was analyzed on a gas chromatograph at 2 minute intervals. The results are shown in Table-1. For comparison, activated carbon, non-caking carbon char, and non-caking carbon char impregnated with 16% by weight of cuprous chloride (B
Similar adsorption tests were conducted using non-caking carbon char (B-2) impregnated with 11% by weight of cuprous chloride. The non-caking coal chars B-1 and B-2 impregnated with cuprous chloride are non-caking coals (Yaroun charcoal,
They were manufactured by impregnating a mesh (particle size of 100 mesh or less) with an aqueous cuprous chloride solution and drying at 150°C. In addition, the breakthrough time shown in the table is
It means the time from the start of gas flow until the carbon monoxide concentration in the column outlet gas reaches 0.025%.

【表】 表−1に示された結果から明らかなように、本
発明品は良好な一酸化炭素吸着性を示すことがわ
かる。
[Table] As is clear from the results shown in Table 1, it can be seen that the product of the present invention exhibits good carbon monoxide adsorption properties.

Claims (1)

【特許請求の範囲】 1 100メツシユ以下の粒度のハロゲン化銅粉末
2〜20重量%と100メツシユ以下の粒度の炭化物
粉末98〜80重量%を主成分とする混合物が多孔性
顆粒状物として形成されていることを特徴とする
一酸化炭素吸着剤。 2 100メツシユ以下の粒度のハロゲン化銅粉末
2〜20重量%と100メツシユ以下の粒度の炭化物
粉末98〜80重量%との混合物100重量部に対し熱
分解し得る有機系バインダー5〜40重量部を均一
に混合して顆粒状に成形し、非酸化性雰囲気中で
250〜400℃で焼成することを特徴とする一酸化炭
素吸着剤の製造方法。
[Scope of Claims] 1. A mixture whose main components are 2 to 20% by weight of copper halide powder with a particle size of 100 mesh or less and 98 to 80% by weight of carbide powder with a particle size of 100 mesh or less is formed as porous granules. A carbon monoxide adsorbent characterized by: 2 5 to 40 parts by weight of a thermally decomposable organic binder per 100 parts by weight of a mixture of 2 to 20% by weight of copper halide powder with a particle size of 100 mesh or less and 98 to 80% by weight of carbide powder with a particle size of 100 mesh or less are mixed uniformly and formed into granules in a non-oxidizing atmosphere.
A method for producing a carbon monoxide adsorbent, which comprises firing at 250 to 400°C.
JP59145062A 1984-07-12 1984-07-12 Adsorbent of carbon monoxide and its production Granted JPS6125638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59145062A JPS6125638A (en) 1984-07-12 1984-07-12 Adsorbent of carbon monoxide and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59145062A JPS6125638A (en) 1984-07-12 1984-07-12 Adsorbent of carbon monoxide and its production

Publications (2)

Publication Number Publication Date
JPS6125638A JPS6125638A (en) 1986-02-04
JPH0353014B2 true JPH0353014B2 (en) 1991-08-13

Family

ID=15376496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59145062A Granted JPS6125638A (en) 1984-07-12 1984-07-12 Adsorbent of carbon monoxide and its production

Country Status (1)

Country Link
JP (1) JPS6125638A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6770390B2 (en) * 2000-11-13 2004-08-03 Air Products And Chemicals, Inc. Carbon monoxide/water removal from fuel cell feed gas

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51137685A (en) * 1975-05-23 1976-11-27 Tatsugoro Onozawa Carbonaceous deodorant
JPS59105841A (en) * 1982-12-07 1984-06-19 Hidefumi Hirai Preparation of carbon monoxide adsorbent

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51137685A (en) * 1975-05-23 1976-11-27 Tatsugoro Onozawa Carbonaceous deodorant
JPS59105841A (en) * 1982-12-07 1984-06-19 Hidefumi Hirai Preparation of carbon monoxide adsorbent

Also Published As

Publication number Publication date
JPS6125638A (en) 1986-02-04

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