JPH0564067B2 - - Google Patents
Info
- Publication number
- JPH0564067B2 JPH0564067B2 JP61004687A JP468786A JPH0564067B2 JP H0564067 B2 JPH0564067 B2 JP H0564067B2 JP 61004687 A JP61004687 A JP 61004687A JP 468786 A JP468786 A JP 468786A JP H0564067 B2 JPH0564067 B2 JP H0564067B2
- Authority
- JP
- Japan
- Prior art keywords
- iodine
- exhaust gas
- heat treatment
- deodorizing agent
- activated carbon
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 230000001877 deodorizing effect Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 7
- 150000002497 iodine compounds Chemical class 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 claims description 4
- 239000002781 deodorant agent Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 19
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 18
- 239000011630 iodine Substances 0.000 description 18
- 229910052740 iodine Inorganic materials 0.000 description 18
- 238000000034 method Methods 0.000 description 12
- 235000019645 odor Nutrition 0.000 description 9
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 6
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 238000000859 sublimation Methods 0.000 description 5
- 230000008022 sublimation Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000004332 deodorization Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000004715 keto acids Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、し尿・下水・ゴミ処理施設や事業所
ビルの廚房廃水処理施設などから排出される、硫
化水素系悪臭を含む排ガスの処理に用いられた脱
臭剤を再生する方法に関するものである。Detailed Description of the Invention "Field of Industrial Application" The present invention is applicable to the treatment of exhaust gas containing hydrogen sulfide-based odor, which is discharged from human waste, sewage, garbage treatment facilities, workplace wastewater treatment facilities of business buildings, etc. The present invention relates to a method for regenerating used deodorizing agents.
「従来技術とその問題点」
今日、悪臭公害は重大な社会問題となつてい
る。硫化水素（H2S）は、しばしば悪臭公害の主
因物質となつており、この硫化水素をどの程度除
去できるかが悪臭公害防止の重要なポイントとさ
れている。"Prior art and its problems" Today, odor pollution has become a serious social problem. Hydrogen sulfide (H 2 S) is often the main cause of odor pollution, and the extent to which this hydrogen sulfide can be removed is considered an important point in preventing odor pollution.
悪臭を除去する方式としては、設備費が安価で
あること装置の運転が容易で安全であることなど
の利点から、吸着脱臭法が広く利用されている。 As a method for removing bad odors, adsorption deodorization is widely used because of its advantages such as low equipment cost and easy and safe operation of the device.
従来、この吸着脱臭法に用いる脱臭剤として
は、主に活性炭が用いられるていたが、悪臭の主
因物質である硫化水素が低分子量で極性を有する
低沸点の化合物であるため、活性炭に吸着されず
らく、活性炭を用いた吸着脱臭法では、悪臭を十
分除去できない問題点があつた。 Conventionally, activated carbon has been mainly used as a deodorizing agent for this adsorption deodorization method, but since hydrogen sulfide, which is the main cause of bad odors, is a low-molecular-weight, polar, and low-boiling compound, it cannot be adsorbed by activated carbon. Unfortunately, the adsorption deodorization method using activated carbon had the problem of not being able to sufficiently remove bad odors.
そこで、本発明者は先に特願昭58−72655号等
により、活性炭にヨウ素化合物（例えば、ヨウ素
の酸化物、ヨウ素のオキソ酸、ヨウ素のオキソ酸
の金属塩など）を添着した脱臭剤を提案した。こ
の脱臭剤は、硫化水素による悪臭の脱臭処理に優
れた効果を発揮し、しかも長寿命であるという特
徴を有するものである。 Therefore, the present inventor previously proposed a deodorizing agent in which an iodine compound (for example, an oxide of iodine, an oxo acid of iodine, a metal salt of an oxo acid of iodine, etc.) is impregnated with activated carbon in Japanese Patent Application No. 72,655/1983. Proposed. This deodorizer exhibits an excellent effect in deodorizing bad odors caused by hydrogen sulfide, and has the characteristics of a long life.
ところが、このヨウ素化合物が添着された脱臭
剤のような添着炭の再生は、添着された薬剤の回
収が容易でないこと、またその再生方法に適した
処理量がまとまらず再生が採算ベースに乗らない
ことなどの理由から、一般に、使用後廃棄されて
いた。 However, when recycling impregnated carbon such as deodorizers impregnated with iodine compounds, it is not easy to recover the impregnated chemicals, and the processing volume suitable for the recycling method cannot be collected, making recycling unprofitable. For these reasons, they were generally discarded after use.
しかしながら、先に提案した脱臭剤にあつて
は、高価ヨウ素化合物が多量に添着・担持されて
いるので、、製造コストが高く、排ガス処理コス
トが高騰する不満があつた。そこでこの問題に対
処して排ガス処理コストの低減を図るために、使
用済み脱臭剤をより有効に再生し得る方法の開発
が望まれていた。 However, in the deodorizing agent proposed above, a large amount of expensive iodine compound is impregnated and carried, so there have been complaints that the manufacturing cost is high and the exhaust gas treatment cost is soaring. Therefore, in order to address this problem and reduce exhaust gas treatment costs, it has been desired to develop a method that can more effectively regenerate used deodorizers.
「問題点を解決するための手段」
そこで、本発明者らは鋭意研究を重ねた結果、
脱臭剤を加熱処理した後、この加熱処理工程で発
生する排ガスを冷却処理することにより、使用済
み脱臭剤を有効に再生でき、排ガス処理コストの
低減を図り得ることを見出し本発明をなすに至つ
た。"Means for Solving the Problems" Therefore, as a result of extensive research, the present inventors found that
The inventors discovered that by heat-treating the deodorizer and then cooling the exhaust gas generated in this heat treatment process, the used deodorizer can be effectively regenerated and the cost of exhaust gas treatment can be reduced, leading to the present invention. Ivy.
「作用」
脱臭剤を加熱処理すると脱臭剤に担持されてい
たヨウ素が昇華により気化し、排ガスとなつて放
出される。次いでこの排ガスを冷却するとヨウ素
が昇華により固化して回収される。"Function" When the deodorizer is heat-treated, the iodine supported on the deodorizer is vaporized by sublimation and released as exhaust gas. Next, when this exhaust gas is cooled, iodine is solidified by sublimation and recovered.
「実施例」
以下、本発明の脱臭剤の再生方法を実施例に沿
つて詳しく説明する。"Example" Hereinafter, the method for regenerating a deodorizing agent of the present invention will be described in detail with reference to Examples.
第１図は、この例の再生方法を実施するのに好
適な処理装置の工程図で、図中符号１は加熱処理
装置、符号２は冷却装置、符号３は沈澱槽、符号
４は濾過装置である。 FIG. 1 is a process diagram of a processing apparatus suitable for implementing the regeneration method of this example, in which reference numeral 1 is a heat treatment apparatus, numeral 2 is a cooling apparatus, numeral 3 is a settling tank, and numeral 4 is a filtration apparatus. It is.
この例の再生方法にあつては、脱臭剤を加熱処
理装置１で、高温流体を用いて処理する。この高
温流体には加熱された水蒸気が用いられている。
高温水蒸気により加熱処理されると、脱臭剤中の
ヨウ素は昇降により気化して活性炭から脱離さ
れ、水蒸気と共に排ガスとなつて放出される。こ
の加熱処理に用いられる蒸気の温度は、200℃以
上、通常400〜500℃程度とされる。蒸気の温度が
低い場合には、ヨウ素を気化せしめることができ
ない。 In the regeneration method of this example, the deodorizer is treated in the heat treatment device 1 using a high-temperature fluid. Heated water vapor is used as this high-temperature fluid.
When heat-treated with high-temperature steam, iodine in the deodorizer is vaporized as it rises and falls, is desorbed from the activated carbon, and is released as exhaust gas along with the steam. The temperature of the steam used for this heat treatment is 200°C or higher, usually about 400 to 500°C. If the temperature of the steam is low, the iodine cannot be vaporized.
加熱処理装置１から放出された排ガスは、冷却
処理装置２に送られる。冷却処理装置２では、排
ガスが100℃以下に冷却される。冷却された排ガ
スからは凝縮液２ａが分離される。この凝縮液２
ａ中には、昇華により固化したヨウ素が粉状に生
成する。 Exhaust gas released from the heat treatment device 1 is sent to the cooling treatment device 2. In the cooling treatment device 2, the exhaust gas is cooled to 100°C or lower. Condensed liquid 2a is separated from the cooled exhaust gas. This condensate 2
In a, iodine solidified by sublimation is produced in powder form.
ここで生じた凝縮液２ａは、沈澱槽３に送られ
る。凝縮液２ａに混入さている固体ヨウ素は、こ
の沈澱槽３で沈澱する。この際、ヨウ素は比重が
4.9と大であるので、速やかに沈澱する。沈澱し
たヨウ素は、濾過装置４に送られる。濾過装置４
では、水分が除去されてヨウ素が回収される。 The condensate 2a produced here is sent to the settling tank 3. The solid iodine mixed in the condensate 2a is precipitated in the precipitation tank 3. At this time, the specific gravity of iodine is
Since it is large at 4.9, it precipitates quickly. The precipitated iodine is sent to a filter device 4. Filtration device 4
Then water is removed and iodine is recovered.
このように回収されたヨウ素には、悪臭物質で
ある硫化水素を処理した際に生じる硫黄などの不
純物が含まれていると考えられる。そこで、濾過
装置４から回収されたヨウ素は、必要に応じて、
鉄製昇華ガマを用いた加熱昇華や、硫酸でヨウ素
を融解してイオン交換する融解法などの既知のヨ
ウ素精製技術により精製される。 The iodine recovered in this way is thought to contain impurities such as sulfur, which is produced when hydrogen sulfide, a malodorous substance, is treated. Therefore, the iodine recovered from the filtration device 4 can be
It is purified using known iodine purification techniques, such as heat sublimation using an iron sublimation kettle and a melting method in which iodine is melted with sulfuric acid for ion exchange.
また、ヨウ素が除去された活性炭は、500〜600
℃で焼結され、残る硫黄などを酸化除去して再生
される。 In addition, activated carbon from which iodine has been removed has a concentration of 500 to 600
It is sintered at ℃ and regenerated by oxidizing and removing remaining sulfur.
なお、蒸気実施例においては、加熱処理を、高
温水蒸気を用いて行つたが、加熱処理は他の高温
流体、例えば加熱された空気などを用いて行つて
も良い。加熱空気を用いて加熱処理を行つた場
合、排ガスの冷却には、冷却された容器の器壁に
排ガスを吹き付ける、冷却気流中に排ガスを吹き
込むなどの手段を採用することができる。 Note that in the steam embodiment, the heat treatment was performed using high-temperature steam, but the heat treatment may be performed using other high-temperature fluids, such as heated air. When heat treatment is performed using heated air, the exhaust gas can be cooled by blowing the exhaust gas onto the wall of a cooled container, blowing the exhaust gas into a cooling air stream, or the like.
また、加熱処理は、流体を用いず直接脱臭剤を
加熱することによつえて行つても良い。この場
合、ヨウ素の除去と共に活性炭を再生できる利点
がある。 Further, the heat treatment may be performed by directly heating the deodorizing agent without using a fluid. In this case, there is an advantage that activated carbon can be regenerated while removing iodine.
「発明の効果」
以上説明したように、本発明の脱臭剤の再生方
法にあつては、脱臭剤を加熱処理し、この加熱処
理工程から発生する排ガスを冷却するので、高価
なヨウ素を効率良く回収でき、また良質の活性炭
を再生できる。従つて、ヨウ素、活性炭をそれぞ
れ有効に再利用でき、ひいては排ガス処理コスト
の低減を図ることができる。"Effects of the Invention" As explained above, in the deodorizing agent regeneration method of the present invention, the deodorizing agent is heat-treated and the exhaust gas generated from this heat treatment step is cooled, so expensive iodine can be efficiently used. It can be recovered and high-quality activated carbon can be recycled. Therefore, iodine and activated carbon can be effectively reused, and the cost of exhaust gas treatment can be reduced.
また、この再生方法によれば、脱臭剤を処理し
た際に生じる排ガスを冷却して、排ガス中に含ま
れるヨウ素などの汚染物質を除去できるので、二
次汚染を防止することができる。 Further, according to this regeneration method, the exhaust gas generated when the deodorizing agent is treated can be cooled and pollutants such as iodine contained in the exhaust gas can be removed, so that secondary pollution can be prevented.
このように本発明の脱臭剤の再生方法は、排ガ
ス処理コストを低減でき、しかも二次汚染を防止
できるので、悪臭防止上極めて利用価値の高いも
のである。 As described above, the method for regenerating a deodorizing agent of the present invention can reduce exhaust gas treatment costs and prevent secondary pollution, so it is extremely useful for preventing bad odors.
図は、本発明の脱臭剤の再生方法の一実施例を
実施するのに好適に用いられる装置を示す工程図
である。
１……加熱処理装置、２……冷却装置。
The figure is a process diagram showing an apparatus suitably used to carry out an embodiment of the deodorizing agent regeneration method of the present invention. 1... Heat treatment device, 2... Cooling device.
Claims (1)
る脱臭剤を再生するに際して、 まず脱臭剤を加熱処理し、ついでこの加熱処理
工程から発生する排ガスを冷却処理することを特
徴とする脱臭剤の再生方法。[Claims] 1. When regenerating a deodorizing agent in which an iodine compound is supported on activated carbon, the deodorizing agent is first subjected to a heat treatment, and then the exhaust gas generated from this heat treatment step is subjected to a cooling treatment. How to recycle deodorant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61004687A JPS62161374A (en) | 1986-01-13 | 1986-01-13 | Regeneration of deodorant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61004687A JPS62161374A (en) | 1986-01-13 | 1986-01-13 | Regeneration of deodorant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62161374A JPS62161374A (en) | 1987-07-17 |
| JPH0564067B2 true JPH0564067B2 (en) | 1993-09-13 |
Family
ID=11590804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61004687A Granted JPS62161374A (en) | 1986-01-13 | 1986-01-13 | Regeneration of deodorant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62161374A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5585988A (en) * | 1993-11-27 | 1996-12-17 | Tdk Corporation | Tape cassette, tape cassette halves forming mold, and method for preparing a tape cassette |
-
1986
- 1986-01-13 JP JP61004687A patent/JPS62161374A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62161374A (en) | 1987-07-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |