JPH0421541B2 - - Google Patents
Info
- Publication number
- JPH0421541B2 JPH0421541B2 JP59189868A JP18986884A JPH0421541B2 JP H0421541 B2 JPH0421541 B2 JP H0421541B2 JP 59189868 A JP59189868 A JP 59189868A JP 18986884 A JP18986884 A JP 18986884A JP H0421541 B2 JPH0421541 B2 JP H0421541B2
- Authority
- JP
- Japan
- Prior art keywords
- adsorbent
- activated carbon
- sulfuric acid
- iodine
- ammonia
- 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
Links
- 239000003463 adsorbent Substances 0.000 claims description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 32
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 229910052740 iodine Inorganic materials 0.000 claims description 8
- 239000011630 iodine Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- -1 iodine oxoacid Chemical class 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 150000004715 keto acids Chemical class 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 24
- 229910021529 ammonia Inorganic materials 0.000 description 12
- 238000001179 sorption measurement Methods 0.000 description 12
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000004332 deodorization Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 3
- 238000004887 air purification Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical compound OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- QFWPJPIVLCBXFJ-UHFFFAOYSA-N glymidine Chemical compound N1=CC(OCCOC)=CN=C1NS(=O)(=O)C1=CC=CC=C1 QFWPJPIVLCBXFJ-UHFFFAOYSA-N 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-N iodic acid Chemical compound OI(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- BZVJOYBTLHNRDW-UHFFFAOYSA-N triphenylmethanamine Chemical compound C=1C=CC=CC=1C(C=1C=CC=CC=1)(N)C1=CC=CC=C1 BZVJOYBTLHNRDW-UHFFFAOYSA-N 0.000 description 1
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
産業上の利用分野
本発明は、脱臭または空気清浄等に用いる吸着
剤およびその製造方法に関するものである。
従来の技術
従来、吸着法による脱臭には、ここにあえて具
体例をあげるまでもなく、椰子殻活性炭が各種脱
臭剤、空気清浄剤として広く用いられている。
発明が解決しようとする問題点
ところが、椰子殻活性炭では、低分子量、低沸
点、極性化合物であるアンモニアをほとんど除去
できないので、アンモニアが主な臭気物質である
臭気にはほとんど脱臭効果がない。
このため、従来においても、ある種の酸を添着
させてアンモニア除去性能を向上させた吸着剤が
開発され、実用化されているが、吸着剤の寿命が
短く、価格が高い欠点があり、しかもガスと吸着
剤との接触時間を長くとらなければならず、フイ
ルタ化など装置のコンパクト化が困難であつた。
そこで、本発明は、従来のアンモニア用吸着剤
に対して著しく吸着性能がすぐれ、しかも長寿命
で低価格な吸着剤、およびその製造方法を提供す
ることを目的とするものである。
問題点を解決するための手段
本発明は、上記目的を達成するため、その技術
的手段として次のように構成した。すなわち、吸
着剤として、
活性炭に硫酸およびヨウ素のオキソ酸を添着さ
せてなることを特徴とする吸着剤。
また、吸着剤の製造方法として、
硫酸およびヨウ素のオキソ酸の混合溶液に活性
炭を一定時間浸漬し、次いでこの活性炭を、水切
り、加熱乾燥、常温で放冷の工程を経て吸着剤と
したことを特徴とする吸着剤の製造方法。
がそれである。
作 用
硫酸およびヨウ素のオキソ酸を混合水溶液中に
活性炭を浸漬して、所要の時間を経過させると、
活性炭の表面には混合水溶液の成分が添着され
る。そして、この表面の添着成分が主としてアン
モニアおよびアルカリ性ガスを吸着する作用をす
る。なお、このように表面処理がなされた活性炭
であつても、他の臭気物質の吸着性能はそのまま
維持されるので、本発明に係る吸着剤は、用途が
きわめて広く、各種脱臭、空気清浄等に用いられ
る。
発明の効果
本発明は、前記の如く構成され、かつ作用する
ものであるから、従来の活性炭が吸着する臭気物
質はもとより、アンモニアによる悪臭の除去にす
ぐれた効果を発揮し、長期にわたつてその効果を
保持するものである。またアルカリ性ガスの吸着
にもすぐれた効果を発揮するので、アンモニアに
加えて代表的な悪臭物質であるトリチルアミンの
除去、あるいは美術館や博物館で問題とされてい
るコンクリートから発生するアルカリ性ガスの除
去にもすぐれた効果を期待することができる。
なお、本発明に係る吸着剤は、吸着性能にすぐ
れ、しかもその寿命が長いので、これを用いるこ
とによつて、脱臭や空気清浄等の装置のコンパク
ト化を図ることができ、その保守管理の簡素化お
よび処理費用の低減を図ることができる。
実施例
次に本発明の一実施例について説明する。
吸着剤の製造に用いる混合水溶液は、硫酸を
0.1〜10N、ヨウ素のオキソ酸（例えば、ヨウ素
酸HIO3、過ヨウ素酸HIO4など）を0.01〜
1.0mol／程度を水に溶解して調製したもので
ある。吸着剤の主体となる活性炭は、椰子殻活性
炭の再生炭であり、４〜８メツシユの破砕状のも
のが用いられる。
吸着剤の製造にあたつては、上記混合水溶液中
に活性炭を所要時間浸漬した後、固液分離（水切
り）をし、150℃以下で加熱乾燥したうえ、常温
の雰囲気中で放冷をする工程を経る。
以下、製造工程の具体例を示す。
混合水溶液 硫酸濃度4N、ヨウ素のオキソ酸
（ヨウ素酸HIO3）濃度0.2mol／
浸漬比 活性炭容積：混合水溶液＝１：１（等容
積）
浸漬時間 １時間
浸漬温度 常温における水温
加熱乾燥 80℃で３時間乾燥
常温放冷 デシケータ内で放冷
上記の条件下で製造された吸着剤を用いたアン
モニアの吸着実験例を次に示す。
第１図はその実験装置であつて、１は吸着管、
２はそれを覆うジヤケツト、３は多孔状仕切り、
４は吸着剤である。吸着管１にはその一方に空気
入口５、他方に空気出口６が形成されている。ま
た、ジヤケツト２には温水の注入口７および排出
口８が形成されており、ここに25℃の温水を流し
て吸着管１を一定温度に保温している。吸着剤４
の層厚は7.5cm、吸着管断面積12.6cm2、実験ガス
はアンモニア濃度100ppmの空気で相対湿度約50％、
温度約25℃であり、実験ガスの吸着管１内の線速
度は40cm／sec、そと空間速度は19000hr-1の条件
下における実験結果は第２図に示す通りである。
ここにＡは本発明に係る吸着剤、Ｂ〜Ｋは従来の
各種吸着剤であり、角吸着剤Ａ〜Ｋの能力を比較
するため、空気入口５におけるアンモニア濃度
（Cin）と空気出口６におけるアンモニア濃度
（Cont）とを時間ごとに測定し、その比Cout／
Cin（破過率＝Cout／Cin×100％）が示されてい
る。また、下表には測定結果から求めた各吸着剤
の10％の破過時間が示されている。
INDUSTRIAL APPLICATION FIELD The present invention relates to an adsorbent used for deodorization or air purification, and a method for producing the same. BACKGROUND ART Conventionally, coconut shell activated carbon has been widely used as various deodorizers and air purifiers for deodorization by adsorption methods, without giving specific examples here. Problems to be Solved by the Invention However, coconut shell activated carbon can hardly remove ammonia, which is a low molecular weight, low boiling point, and polar compound, so it has almost no deodorizing effect on odors where ammonia is the main odor substance. For this reason, adsorbents with improved ammonia removal performance impregnated with a certain type of acid have been developed and put into practical use, but they have the drawbacks of short lifespan and high price. This requires a long contact time between the gas and the adsorbent, making it difficult to make the device more compact, such as by using a filter. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an adsorbent that has significantly superior adsorption performance compared to conventional ammonia adsorbents, has a long life, and is inexpensive, and a method for producing the same. Means for Solving the Problems In order to achieve the above object, the present invention has the following technical means. That is, the adsorbent is characterized in that the adsorbent is made by impregnating activated carbon with oxoacids of sulfuric acid and iodine. In addition, as a manufacturing method for the adsorbent, activated carbon is immersed in a mixed solution of sulfuric acid and iodine oxoacid for a certain period of time, and then this activated carbon is made into an adsorbent through the steps of draining water, heating drying, and leaving it to cool at room temperature. Characteristic method for producing adsorbent. That is it. Effect When activated carbon is immersed in a mixed aqueous solution of sulfuric acid and iodine oxoacid and the required time elapses,
The components of the mixed aqueous solution are impregnated on the surface of the activated carbon. The impregnated components on the surface mainly act to adsorb ammonia and alkaline gases. Furthermore, even if activated carbon is surface-treated in this way, its ability to adsorb other odorous substances is maintained, so the adsorbent according to the present invention has an extremely wide range of uses, and can be used for various deodorization, air purification, etc. used. Effects of the Invention Since the present invention is constructed and operates as described above, it exhibits an excellent effect in removing not only odorous substances that conventional activated carbon adsorbs, but also bad odors caused by ammonia, and has a long-lasting effect. It retains its effectiveness. It is also highly effective in adsorbing alkaline gases, so in addition to ammonia, it can also be used to remove tritylamine, a typical malodorous substance, and to remove alkaline gases generated from concrete, which is a problem in art galleries and museums. You can expect excellent results. Furthermore, the adsorbent according to the present invention has excellent adsorption performance and has a long service life, so by using it, it is possible to downsize equipment for deodorization and air purification, and to reduce the maintenance costs. Simplification and reduction of processing costs can be achieved. Embodiment Next, an embodiment of the present invention will be described. The mixed aqueous solution used to manufacture the adsorbent contains sulfuric acid.
0.1~10N, 0.01~10N of iodine oxoacid (e.g. iodate HIO3 , periodate HIO4, etc.)
It was prepared by dissolving approximately 1.0 mol/in water. The activated carbon that is the main component of the adsorbent is recycled coconut shell activated carbon, and is used in the form of crushed pieces of 4 to 8 meshes. To manufacture the adsorbent, activated carbon is immersed in the above mixed aqueous solution for the required time, then solid-liquid separation (drained), heated and dried at below 150°C, and then left to cool in an atmosphere at room temperature. Go through the process. A specific example of the manufacturing process will be shown below. Mixed aqueous solution Sulfuric acid concentration 4N, iodine oxoacid (iodic acid HIO 3 ) concentration 0.2mol / Immersion ratio Activated carbon volume: Mixed aqueous solution = 1:1 (equal volume) Immersion time 1 hour Immersion temperature Water temperature heating drying at room temperature 3 at 80℃ Time-drying, cooling at room temperature, cooling in a desiccator. An example of an ammonia adsorption experiment using the adsorbent produced under the above conditions is shown below. Figure 1 shows the experimental equipment, where 1 is an adsorption tube;
2 is a jacket that covers it, 3 is a porous partition,
4 is an adsorbent. The adsorption tube 1 is formed with an air inlet 5 on one side and an air outlet 6 on the other side. Further, the jacket 2 is formed with a hot water inlet 7 and a hot water outlet 8, through which hot water of 25° C. flows to keep the adsorption tube 1 at a constant temperature. Adsorbent 4
The layer thickness is 7.5 cm, the cross-sectional area of the adsorption tube is 12.6 cm 2 , the experimental gas is air with an ammonia concentration of 100 ppm, and the relative humidity is approximately 50%.
The experimental results under the conditions that the temperature was about 25° C., the linear velocity of the experimental gas in the adsorption tube 1 was 40 cm/sec, and the space velocity was 19,000 hr -1 are shown in FIG.
Here, A is the adsorbent according to the present invention, B to K are various conventional adsorbents, and in order to compare the abilities of the square adsorbents A to K, the ammonia concentration (Cin) at the air inlet 5 and the air outlet 6 are The ammonia concentration (Cont) is measured every hour, and the ratio Cout/
Cin (breakthrough rate=Cout/Cin×100%) is shown. In addition, the table below shows the 10% breakthrough time for each adsorbent determined from the measurement results.
【表】
以上の実験データから明らかなように、本発明
に係る吸着剤Ａはアンモニアの吸着除去効率がき
わめて高く、しかも長時間にわたつてその効果を
保持するものであり、従来の吸着剤で最も性能が
よい吸着剤Ｂより約２倍も寿命が長く、きわめて
高性能の吸着剤である。[Table] As is clear from the above experimental data, the adsorbent A according to the present invention has extremely high ammonia adsorption and removal efficiency, and maintains its effectiveness for a long time, compared to conventional adsorbents. It is an extremely high-performance adsorbent, with a lifespan approximately twice as long as that of adsorbent B, which has the best performance.
第１図は吸着効果の実験装置の一例を示す縦断
面図、第２図は本発明に係る吸着剤と従来の吸着
剤の性能を示した特性図である。
１……吸着管、２……ジヤケツト、３……多孔
状仕切り、４……吸着剤、５……空気入口、６…
…空気出口、７……温水の注入口、８……その排
出口、Ａ……本発明に係る吸着剤、Ｂ〜Ｋ……従
来の吸着剤。
FIG. 1 is a longitudinal sectional view showing an example of an experimental device for adsorption effects, and FIG. 2 is a characteristic diagram showing the performance of the adsorbent according to the present invention and a conventional adsorbent. DESCRIPTION OF SYMBOLS 1... Adsorption tube, 2... Jacket, 3... Porous partition, 4... Adsorbent, 5... Air inlet, 6...
... Air outlet, 7... Hot water inlet, 8... Outlet thereof, A... Adsorbent according to the present invention, B to K... Conventional adsorbent.
Claims (1)
させてなることを特徴とする吸着剤。 ２ 硫酸およびヨウ素のオキソ酸の混合溶液に活
性炭を一定時間浸漬し、次いでこの活性炭を、水
切り、加熱乾燥、常温で放冷の工程を経て吸着剤
としたことを特徴とする吸着剤の製造方法。 ３ 硫酸濃度が4N、ヨウ素のオキソ酸濃度が
0.2mol／の混合溶液を用いることを特徴とす
る特許請求の範囲第２項記載の吸着剤の製造方
法。[Claims] 1. An adsorbent comprising activated carbon impregnated with oxoacids of sulfuric acid and iodine. 2. A method for producing an adsorbent, which is characterized in that activated carbon is immersed in a mixed solution of oxoacid of sulfuric acid and iodine for a certain period of time, and then this activated carbon is made into an adsorbent through the steps of draining water, heating drying, and allowing it to cool at room temperature. . 3 The sulfuric acid concentration is 4N, and the iodine oxoacid concentration is
The method for producing an adsorbent according to claim 2, characterized in that a 0.2 mol/mixed solution is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59189868A JPS6168136A (en) | 1984-09-11 | 1984-09-11 | Adsorbent and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59189868A JPS6168136A (en) | 1984-09-11 | 1984-09-11 | Adsorbent and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168136A JPS6168136A (en) | 1986-04-08 |
| JPH0421541B2 true JPH0421541B2 (en) | 1992-04-10 |
Family
ID=16248512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59189868A Granted JPS6168136A (en) | 1984-09-11 | 1984-09-11 | Adsorbent and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168136A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5346876A (en) * | 1991-12-12 | 1994-09-13 | Nippon Chemical Industrial Co., Ltd. | Air purifying agent and a process for producing same |
| TW316850B (en) * | 1992-02-28 | 1997-10-01 | Takeda Pharm Industry Co Ltd | |
| KR20000049532A (en) * | 2000-04-04 | 2000-08-05 | 신창섭 | Preparing method of impregnated activated carbon and activated carbon fiber with KIO3 for the removal of sulfureous odors as H2S and CH3SH. |
-
1984
- 1984-09-11 JP JP59189868A patent/JPS6168136A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6168136A (en) | 1986-04-08 |
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