JPH0326098B2 - - Google Patents
Info
- Publication number
- JPH0326098B2 JPH0326098B2 JP59082877A JP8287784A JPH0326098B2 JP H0326098 B2 JPH0326098 B2 JP H0326098B2 JP 59082877 A JP59082877 A JP 59082877A JP 8287784 A JP8287784 A JP 8287784A JP H0326098 B2 JPH0326098 B2 JP H0326098B2
- Authority
- JP
- Japan
- Prior art keywords
- cristobalite
- gas
- present
- sample
- concentration
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052906 cristobalite Inorganic materials 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 9
- 239000003463 adsorbent Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910021536 Zeolite Inorganic materials 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010457 zeolite Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、アンモニアガス、硫化水素ガス等の
吸着剤に関する。
［従来の技術］
従来、一般に使用されているガス吸着剤として
は、合成ゼオライト、天然ゼオライト、シリカゲ
ル、そしてアルミナゲル等があり、これらのガス
吸着剤は一種のもので多種類のガスを吸着する万
能のものはなく、目的に応じて夫々単独または複
合して使用されている。
例えば、最も代表的なガス吸着剤である活性炭
は硫化水素ガスの吸着能はあるが、アンモニアガ
スの吸着能はほとんどない。
［発明が解決しようとする課題］
本発明は、天然産の多孔質材料で比表面積の大
なクリストバライトの物性に着目し、ガス吸着能
について種々研究していたところ、このクリスト
バライトにガス成分と反応しやすい物質を適量担
持させておくことにより著しくガス吸着能が向上
することを知見した。
本発明は、前記の知見に基づき従来のガス吸着
剤の欠点を除去することを課題とする。
［課題を解決するための手段］
上記の課題は、本発明により、クリストバライ
トを主体とする材料にポリ硫酸鉄を担持させるこ
とにより解決される。
［作用］
本発明に用いるポリ硫酸鉄は、本出願人が先に
浄水効果にすぐれた凝集剤として提案したもので
あつて（特許第842085号）、一般式が
［Fe2（OH）o（SO4）3-o/2］n
で表わされるもので、赤褐色の高分子溶液であ
る。
また本発明に用いられるクリストバライトは天
然産の多孔質材料であつて、ケイ酸分80〜90％を
含み、クリストバライトを主たる構成鉱物とする
素材である。そして直径５〜10μｍの球体の集合
体であつて、その中に直径20〜200Åの微細孔を
有し、批表面積は60〜70m2／ｇで天然ゼオライト
の約３倍以上を示す。また見掛気孔率は40〜50％
である。そしてこのクリストバライトのみでアン
モニアガスを吸着せしめると、その吸着容量は２
〜３mg／ｇである（クリストバライト１ｇ当りア
ンモニアガスの吸着量をmgで示す）。
つぎに、このクリストバライトを本発明に用い
る場合は、目的に応じて粉砕して適当な粒径範囲
の粒状物とするか、または粉砕産物を造粒して粒
状物とすることが望ましい。また、クリストバラ
イトのみでも用いることができるが、他の無害な
物質を混合して用いることもできる。
本発明において、クリストバライトを主体とす
る材料にポリ硫酸鉄を担持せしめる方法は、所定
の粒径に調整した材料をポリ硫酸鉄溶液に一定時
間浸漬したのち固液分離し、その材料を乾燥させ
る方法か、粉末状の材料にポリ硫酸鉄及びバイン
ダーを添加して混練した後に成形する方法が望ま
しい。
本発明において用いるポリ硫酸鉄の溶液の濃
度、担持せしめる割合は、ガス吸着剤の用途、要
求される性能により定められるもので適宜調整す
ることができる。
本発明によるガス吸着剤は、再生して用いるこ
とができるほか、ガス吸着容量が大であり、天然
産のクリストバライトを素材として用いるので、
安価で容易に得ることができるなど、その実用価
値が高い。
［実施例］
天然産クリストバライトを粉砕し、粒径1.2〜
1.4mmに調整し乾燥したものを試料１とし、さら
に試料１をポリ硫酸鉄溶液（Fe3+3％）に浸漬
し、７時間後に固液分離し、そのクリストバライ
トを100℃で４時間乾燥したものを試料２とする。
また、比較のため市販の活性炭Ｇ×４／６を1.2
〜1.4mmに調製したものを試料３とした。
なお、試料２のポリ硫酸鉄の担持量はFeとし
て2.63％であつた。
この試料１〜３のそれぞれ１ｇを内径７mmのガ
ラス管に充填し、両端をガラスウールで固定し、
吸着筒とした。これにアンモニアガスを180ppm
濃度に調節した空気を0.5／分の速度で流し、
出口側におけるアンモニア濃度を測定した。濃度
測定は３分間隔で、出口濃度が入口濃度と同じに
なるまで行つた。その結果を第１表および第１図
に示す。
【表】DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an adsorbent for ammonia gas, hydrogen sulfide gas, etc. [Prior Art] Conventionally, commonly used gas adsorbents include synthetic zeolite, natural zeolite, silica gel, and alumina gel. There is no one-size-fits-all product, and each is used singly or in combination depending on the purpose. For example, activated carbon, which is the most typical gas adsorbent, has the ability to adsorb hydrogen sulfide gas, but has almost no ability to adsorb ammonia gas. [Problems to be Solved by the Invention] The present invention focused on the physical properties of cristobalite, which is a naturally produced porous material with a large specific surface area, and conducted various research on its gas adsorption ability. It has been found that the gas adsorption capacity can be significantly improved by supporting an appropriate amount of a substance that is easy to absorb. An object of the present invention is to eliminate the drawbacks of conventional gas adsorbents based on the above findings. [Means for Solving the Problems] According to the present invention, the above problems are solved by supporting polyferric sulfate on a material mainly consisting of cristobalite. [Function] The polyferrous sulfate used in the present invention was previously proposed by the applicant as a flocculant with excellent water purification effect (Patent No. 842085), and has the general formula [Fe 2 (OH) o ( It is represented by SO 4 ) 3-o/2 ] n and is a reddish-brown polymer solution. Moreover, cristobalite used in the present invention is a naturally produced porous material that contains 80 to 90% silicic acid and has cristobalite as its main constituent mineral. It is an aggregate of spheres with a diameter of 5 to 10 μm, which has micropores with a diameter of 20 to 200 Å, and a critical surface area of 60 to 70 m 2 /g, which is about three times larger than that of natural zeolite. Also, the apparent porosity is 40-50%
It is. If cristobalite alone adsorbs ammonia gas, its adsorption capacity is 2.
3 mg/g (the amount of ammonia gas adsorbed per 1 g of cristobalite is expressed in mg). Next, when this cristobalite is used in the present invention, it is preferable to crush it into granules having an appropriate particle size range depending on the purpose, or to granulate the pulverized product to form granules. Furthermore, cristobalite alone can be used, but other harmless substances can also be used in combination. In the present invention, the method for supporting polyferric sulfate on a material mainly composed of cristobalite is to immerse the material adjusted to a predetermined particle size in a polyferrous sulfate solution for a certain period of time, then separate the material into solid and liquid, and then dry the material. Alternatively, it is desirable to add polyferrous sulfate and a binder to a powdered material, knead it, and then mold it. The concentration of the polyferric sulfate solution used in the present invention and the supported ratio are determined by the use of the gas adsorbent and the required performance, and can be adjusted as appropriate. The gas adsorbent according to the present invention can be regenerated and used, has a large gas adsorption capacity, and uses naturally produced cristobalite as a material.
It has high practical value as it is cheap and easily available. [Example] Naturally produced cristobalite was crushed to a particle size of 1.2~
Sample 1 was adjusted to 1.4 mm and dried. Sample 1 was further immersed in polyferric sulfate solution (Fe 3+ 3%), solid-liquid separated after 7 hours, and the cristobalite was dried at 100°C for 4 hours. Let this be sample 2.
Also, for comparison, commercially available activated carbon G x 4/6 was used at 1.2
Sample 3 was prepared to 1.4 mm. In addition, the amount of supported polyferric sulfate in Sample 2 was 2.63% as Fe. 1 g of each of these samples 1 to 3 was filled into a glass tube with an inner diameter of 7 mm, and both ends were fixed with glass wool.
It was used as an adsorption cylinder. Add 180ppm of ammonia gas to this
Air with adjusted concentration flows at a speed of 0.5/min,
The ammonia concentration at the outlet side was measured. Concentration measurements were performed at 3 minute intervals until the outlet concentration was the same as the inlet concentration. The results are shown in Table 1 and FIG. 【table】
第１図は本発明によるガス吸着剤と比較試料の
ガス吸着性能を時間との関係で表した図である。
FIG. 1 is a diagram showing the gas adsorption performance of the gas adsorbent according to the present invention and a comparative sample in relation to time.
Claims (1)
酸鉄を担持させたことを特徴とするガス吸着剤。1. A gas adsorbent characterized by having polyferric sulfate supported on a material mainly consisting of cristobalite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59082877A JPS60227831A (en) | 1984-04-26 | 1984-04-26 | Gas adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59082877A JPS60227831A (en) | 1984-04-26 | 1984-04-26 | Gas adsorbent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60227831A JPS60227831A (en) | 1985-11-13 |
| JPH0326098B2 true JPH0326098B2 (en) | 1991-04-09 |
Family
ID=13786517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59082877A Granted JPS60227831A (en) | 1984-04-26 | 1984-04-26 | Gas adsorbent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60227831A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63178961A (en) * | 1987-01-21 | 1988-07-23 | 日本紙業株式会社 | Packaging base |
| EP0624392B1 (en) * | 1993-05-11 | 1998-08-12 | Japan Pionics Co., Ltd. | Process for cleaning harmful gas |
| WO1998014400A1 (en) * | 1996-09-30 | 1998-04-09 | Arthur Flueck | Ammonia adsorption/desorption |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4889200A (en) * | 1972-02-29 | 1973-11-21 | ||
| JPS5395891A (en) * | 1977-02-01 | 1978-08-22 | Taiyo Kaken Co | Animal smell removing method |
| JPS5922655A (en) * | 1982-07-30 | 1984-02-04 | Tafu Kaihatsu:Kk | Gaseous ammonia removing agent |
-
1984
- 1984-04-26 JP JP59082877A patent/JPS60227831A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4889200A (en) * | 1972-02-29 | 1973-11-21 | ||
| JPS5395891A (en) * | 1977-02-01 | 1978-08-22 | Taiyo Kaken Co | Animal smell removing method |
| JPS5922655A (en) * | 1982-07-30 | 1984-02-04 | Tafu Kaihatsu:Kk | Gaseous ammonia removing agent |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60227831A (en) | 1985-11-13 |
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