JP2002053365A - Method for producing raw material for pottery - Google Patents
Method for producing raw material for potteryInfo
- Publication number
- JP2002053365A JP2002053365A JP2000236392A JP2000236392A JP2002053365A JP 2002053365 A JP2002053365 A JP 2002053365A JP 2000236392 A JP2000236392 A JP 2000236392A JP 2000236392 A JP2000236392 A JP 2000236392A JP 2002053365 A JP2002053365 A JP 2002053365A
- Authority
- JP
- Japan
- Prior art keywords
- dioxin
- fly ash
- raw material
- acid
- pottery
- 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.)
- Withdrawn
Links
- 239000002994 raw material Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000010881 fly ash Substances 0.000 claims abstract description 42
- 239000007787 solid Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000002253 acid Substances 0.000 claims abstract description 13
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 239000000706 filtrate Substances 0.000 claims abstract description 8
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims description 45
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims 1
- 150000002013 dioxins Chemical class 0.000 abstract description 3
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 abstract 2
- 238000001784 detoxification Methods 0.000 abstract 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 9
- 239000002904 solvent Substances 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 102100033041 Carbonic anhydrase 13 Human genes 0.000 description 2
- 101000867860 Homo sapiens Carbonic anhydrase 13 Proteins 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 101100408296 Autographa californica nuclear polyhedrosis virus AC24 gene Proteins 0.000 description 1
- 101100002917 Caenorhabditis elegans ash-2 gene Proteins 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000382 dechlorinating effect Effects 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000004045 organic chlorine compounds Chemical class 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000000126 substance Substances 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Processing Of Solid Wastes (AREA)
- Extraction Or Liquid Replacement (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、焼却炉等における
燃焼に伴って発生する飛灰から、陶器用原材料を製造す
る方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a raw material for pottery from fly ash generated by combustion in an incinerator or the like.
【０００２】[0002]
【従来の技術】焼却炉等における燃焼に伴って発生する
飛灰には、有害なダイオキシン等の有機塩素系化合物が
含まれており、これらを無害化処理した上で、埋立て処
分する方法が従来から行われている。2. Description of the Related Art Fly ash generated during combustion in an incinerator or the like contains harmful organic chlorine compounds such as dioxins. This has been done conventionally.
【０００３】図３〜４は、飛灰に含まれるダイオキシン
を分解し無害化するダイオキシン分解方法の従来の例を
示すブロック図である。FIGS. 3 and 4 are block diagrams showing a conventional example of a dioxin decomposing method for decomposing dioxin contained in fly ash to render it harmless.
【０００４】図３は、電気抵抗溶融炉によって飛灰を溶
融し、ダイオキシンを高温分解する方法を示す。飛灰を
電気抵抗溶融炉に投入し、溶解ヒ−タ及び加熱ヒ−タに
よって約１３００〜１４００℃に高温加熱すると、飛灰
が溶融してダイオキシンが熱分解される。そして、処理
済の飛灰は排出・冷却し、最終処分場へ運ばれて埋立て
処分する。FIG. 3 shows a method of melting fly ash by an electric resistance melting furnace and decomposing dioxin at a high temperature. When the fly ash is put into an electric resistance melting furnace and heated to about 1300 to 1400 ° C. by a melting heater and a heating heater, the fly ash is melted and dioxin is thermally decomposed. The treated fly ash is discharged and cooled, transported to a final disposal site, and disposed of in landfill.
【０００５】図４は、熱分解炉内の低酸素雰囲気中で、
飛灰のダイオキシンを脱塩素処理する方法を示す。飛灰
を熱分解炉に投入し、Ｎ2ガス（窒素ガス）を供給し、
外部ヒ−タによって熱分解炉内を約４００〜５００℃に
加熱する。約１時間保持することによって飛灰のダイオ
キシンは低酸素雰囲気中で脱塩素される。脱塩素処理後
の飛灰は冷却用ク−ラで冷却し、最終処分場へ運ばれて
埋立て処分する。[0005] FIG. 4 is a view showing a low-oxygen atmosphere in a pyrolysis furnace.
The method of dechlorinating fly ash dioxin is shown. Fly ash is injected into the pyrolysis furnace, and N 2 gas (nitrogen gas) is supplied.
The inside of the pyrolysis furnace is heated to about 400 to 500 ° C. by an external heater. By holding for about one hour, fly ash dioxin is dechlorinated in a low oxygen atmosphere. The fly ash after the dechlorination treatment is cooled by a cooler and transported to a final disposal site for landfill disposal.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
ようなダイオキシン分解処理方法では、処理済の飛灰は
埋立て処分される。そのため、処理量の増加と共に埋立
て用地の確保が難しくなり、最終処分場の負荷が大きく
なっていた。そこで、本発明では、埋立て処分されてい
た飛灰を陶器用原材料として有効活用すると共に、埋立
て用の最終処分場の負荷を減少させることができる、陶
器用原材料の製造方法を提供することを目的とする。However, in the above dioxin decomposition treatment method, the treated fly ash is disposed of in landfill. For this reason, it became difficult to secure landfill sites as the amount of treatment increased, and the load on the final disposal site was increased. In view of the above, the present invention provides a method for producing a pottery raw material that can effectively utilize fly ash that has been landfilled as a raw material for pottery and can reduce the load on a final disposal site for landfill. With the goal.
【０００７】[0007]
【課題を解決するための手段】本発明は前記した問題点
を解消するためになされたもので、次の通り構成する。
すなわち、焼却等によって発生する飛灰を酸で溶解する
ステップと、溶解液から酸溶解濾液を抜き出した後の固
形分に抽出剤を加えてダイオキシンを抽出するステップ
と、ダイオキシンが抽出された後の固形分を取り出して
陶器用原材料を得るステップとを含むことを特徴とする
陶器用原材料の製造方法を開発した。本発明の方法にお
いて、前記酸が塩酸を含み、前記抽出剤がトルエンを含
むことが好ましい。また、本発明の方法において、前記
抽出剤が超臨界状態のCO2を含み、加圧下で抽出処理を
行うことが好ましい。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has the following construction.
That is, a step of dissolving fly ash generated by incineration or the like with an acid, a step of extracting dioxin by adding an extractant to a solid content after extracting an acid-dissolved filtrate from the dissolution solution, and a step of extracting dioxin after the dioxin is extracted Removing the solid content to obtain a pottery raw material. In the method of the present invention, it is preferable that the acid includes hydrochloric acid and the extractant includes toluene. In the method of the present invention, it is preferable that the extractant contains CO 2 in a supercritical state, and the extraction treatment is performed under pressure.
【０００８】[0008]
【発明の実施の形態】次に本発明の実施の形態を図面に
基づいて説明する。なお、これらの実施の形態は、本発
明を限定するものではない。Embodiments of the present invention will now be described with reference to the drawings. Note that these embodiments do not limit the present invention.
【０００９】図１に示す実施の形態では、飛灰又は焼却
灰等（以下飛灰と呼ぶ）の飛灰１を酸２で溶解し、酸溶
解濾液４を抜き出した後の固形分３からダイオキシンを
抽出し、ダイオキシンが抽出されて無害化した固形分６
を取り出して、陶器用原材料を得るように構成したもの
である。In the embodiment shown in FIG. 1, fly ash 1 such as fly ash or incinerated ash (hereinafter referred to as fly ash) is dissolved in acid 2, and dioxin is extracted from solid 3 after acid-dissolved filtrate 4 is extracted. Is extracted, and the dioxin is extracted and made harmless solid content 6.
Is taken out to obtain a raw material for pottery.
【００１０】飛灰はSiやAlを１５％程度含むものであれ
ば利用することができる。飛灰の成分は、例えばSiO2や
Al2O3である。飛灰はバクフィルタ又は電気集塵機によ
って捕集することができる。Fly ash can be used as long as it contains about 15% of Si or Al. The components of fly ash are, for example, SiO 2 and
Al 2 O 3 . Fly ash can be collected by a tap filter or an electric dust collector.
【００１１】まず、酸溶解処理工程では、塩酸（HCl）
等の酸２の中に飛灰１を供給し、溶解して、酸溶解濾液
４と固形分３に分離する。ここで、酸２は塩酸等を用い
るが、それに限定されず、硫酸等も用いることができ
る。次に、酸溶解濾液４を、重金属固定処理工程では、
重金属固定処理して重金属を除去し、その後廃棄処理す
る。First, in the acid dissolution treatment step, hydrochloric acid (HCl)
The fly ash 1 is supplied into the acid 2 and the like, dissolved and separated into an acid-dissolved filtrate 4 and a solid 3. Here, the acid 2 uses hydrochloric acid or the like, but is not limited thereto, and sulfuric acid or the like can also be used. Next, in the heavy metal fixing treatment step,
Heavy metal is fixed to remove heavy metals, and then disposed of.
【００１２】続いて、固形分はダイオキシン抽出処理工
程に送られ、固形分３にダイオキシンを含む油分を抽出
するトルエン等の抽出剤５を混合し、８０〜１５０℃に
加熱することによって、固形分の中からダイオキシンを
含む油分を抽出した抽出液７を生成する。そして、残さ
れた固形分６を取り出し、陶器用原材料とする。抽出剤
はトルエンのほかに、ヘキサンを用いることができるSubsequently, the solid content is sent to a dioxin extraction treatment step. The solid content 3 is mixed with an extractant 5 such as toluene for extracting an oil component containing dioxin, and heated to 80 to 150 ° C. to obtain a solid content. The extract 7 which extracted the oil component containing a dioxin from among these is produced. Then, the remaining solid content 6 is taken out and used as a raw material for pottery. Hexane can be used as the extractant in addition to toluene
【００１３】さらに、ダイオキシン分解処理工程では、
抽出液７から抽出剤５を回収し濃縮した後、抽出液７に
溶媒を加える。溶媒はイソプロピルアルコール等を用い
ることができるが、それらに限定されない。次に溶媒を
加えた抽出液７に電子線８を照射し、ダイオキシンを分
解する。ダイオキシン分解処理後の処理液を１００〜１
５０℃に加熱し、処理液中の溶媒１０を回収する。残っ
た残渣９は廃棄処理する。Further, in the dioxin decomposition treatment step,
After recovering and concentrating the extractant 5 from the extract 7, the solvent is added to the extract 7. As the solvent, isopropyl alcohol or the like can be used, but the solvent is not limited thereto. Next, the extract 7 to which the solvent has been added is irradiated with an electron beam 8 to decompose dioxin. The treatment liquid after dioxin decomposition treatment is 100 to 1
The mixture is heated to 50 ° C., and the solvent 10 in the treatment liquid is recovered. The remaining residue 9 is discarded.
【００１４】上記のように構成された陶器用原材料の製
造方法によれば、酸溶解処理工程で、塩酸（HCl）等の
酸２の中に飛灰１が供給され、溶解されると、ダイオキ
シンは抽出され易い状態となる。そして、飛灰１が溶解
された灰液を酸溶解濾液４と固形分３に分ける。According to the method for producing a raw material for pottery configured as described above, fly ash 1 is supplied into acid 2 such as hydrochloric acid (HCl) in the acid dissolution treatment step, and when dissolved, dioxin is added. Is easily extracted. Then, the ash solution in which the fly ash 1 is dissolved is separated into an acid-dissolved filtrate 4 and a solid content 3.
【００１５】次に、ダイオキシン抽出処理工程では、固
形分３に抽出剤５として抽出能力の高いトルエン等が供
給混合される。この溶液を加熱コイル等によって８０〜
１５０℃に加熱することにより、固形分３からダイオキ
シンを含む油分が抽出されて一部残渣を含む抽出液７が
生成される。残された固形分６は、ダイオキシンが抽出
され無害化された微粉末の固形分である。この固形分６
はシリカ(SiO2)とアルミナ(Al2O3)が主成分で、乾燥す
ることにより陶器用原材料として最適な直径が約10μm
程度の微粉末が得られる。Next, in the dioxin extraction treatment step, toluene or the like having a high extraction ability as the extractant 5 is supplied to the solid content 3 and mixed. The solution is heated to 80
By heating to 150 ° C., an oil containing dioxin is extracted from the solid content 3 to produce an extract 7 partially containing a residue. The remaining solids 6 are solids of fine powder from which dioxin has been extracted and made harmless. This solid content 6
Is mainly composed of silica (SiO 2 ) and alumina (Al 2 O 3 ), and when dried, the optimal diameter as a raw material for pottery is about 10 μm
A fine powder of the order is obtained.
【００１６】さらに、ダイオキシン分解処理工程では、
ダイオキシンが抽出された抽出液7を加熱コイル等によ
って８０〜１５０℃に加熱し、抽出剤５を回収する。こ
の操作によって抽出液７を濃縮し、濃縮した後に水酸化
カリウム等のアルカリと、イソプロピルアルコ−ル等の
溶媒を加える。さらに溶解された処理液に電子線エネル
ギー強度、線量などが調整された電子線８を照射し、ダ
イオキシンをほぼ全部分解する。分解処理後の処理液を
加熱コイル等によって１００〜１５０℃に加熱し、処理
液中の溶媒１０が回収される。最後に残った無害化され
た残渣９は廃棄処理される。Further, in the dioxin decomposition treatment step,
The extract 7 from which dioxin has been extracted is heated to 80 to 150 ° C. by a heating coil or the like, and the extractant 5 is recovered. The extract 7 is concentrated by this operation, and after concentration, an alkali such as potassium hydroxide and a solvent such as isopropyl alcohol are added. Further, the dissolved processing solution is irradiated with an electron beam 8 whose electron beam energy intensity, dose and the like are adjusted, and almost all of the dioxin is decomposed. The treatment liquid after the decomposition treatment is heated to 100 to 150 ° C. by a heating coil or the like, and the solvent 10 in the treatment liquid is recovered. The last remaining detoxified residue 9 is disposed of.
【００１７】以上のようにして、ダイオキシンを含む有
害な飛灰を無害化することができると共に、ダイオキシ
ンが抽出されて無害化した飛灰を、有価物の陶器用原材
料として有効活用することができる。また、処理済の飛
灰が有効利用されるので、埋立てられる飛灰が減少し、
最終処分場の負荷を小さくすることができる。As described above, harmful fly ash containing dioxin can be rendered harmless, and fly ash from which dioxin has been extracted and rendered harmless can be effectively used as a valuable material for pottery. . In addition, because the treated fly ash is used effectively, the amount of landfill fly ash decreases,
The load on the final disposal site can be reduced.
【００１８】本発明の実施の形態を図２により説明す
る。図１によって説明した実施の形態と同一部材には同
一符号を付し重複する説明は省略する。An embodiment of the present invention will be described with reference to FIG. The same members as those in the embodiment described with reference to FIG. 1 are denoted by the same reference numerals, and overlapping description will be omitted.
【００１９】図２に示す実施の形態においては、ダイオ
キシンの抽出剤として超臨界状態のCO2１１を使用し、
加圧下でダイオキシンの抽出処理を行うように構成した
ものであり、その他の構成は、図１に示す実施の形態と
同様である。In the embodiment shown in FIG. 2, supercritical CO 2 11 is used as a dioxin extractant,
The dioxin extraction process is performed under pressure, and the other configuration is the same as the embodiment shown in FIG.
【００２０】図２において、図１の形態と同様に、酸処
理工程を経て固形分３を得る。続くダイオキシン抽出処
理工程では、高圧容器１２の中で、加圧下で固形分３に
ダイオキシンを抽出する超臨界状態のCO2１１が抽出補
助剤であるトルエン等と共に抽出剤として供給混合され
る。このときの圧力は２００〜３００kg/cm2Gであるこ
とが好ましい。In FIG. 2, a solid 3 is obtained through an acid treatment step as in the embodiment of FIG. In the subsequent dioxin extraction treatment step, supercritical CO 2 11 for extracting dioxin into solids 3 under pressure in the high-pressure vessel 12 is supplied and mixed as an extractant together with an extraction aid such as toluene. The pressure at this time is preferably 200 to 300 kg / cm 2 G.
【００２１】この抽出液をイソプロピルアルコールなど
に通すことにより、固形分３からダイオキシンを含む油
分を含む抽出液７が生成される。このようにして、図１
の形態と同様に、本発明の陶器用原材料を製造すること
ができる。By passing this extract through isopropyl alcohol or the like, an extract 7 containing oil containing dioxin is produced from the solid content 3. Thus, FIG.
Similarly to the embodiment, the raw material for pottery of the present invention can be manufactured.
【００２２】上記のように構成された陶器用原材料の製
造方法によれば、高圧容器１２の中で固形分３と超臨界
状態のCO2及びトルエンからなる抽出剤１１が供給混合
される。例えば２００〜３００kg/cm2Gの加圧下でダイ
オキシン抽出処理が行われた場合、固形分３からダイオ
キシンを含む油分を高能率で抽出させることができる。According to the method for manufacturing a ceramic raw material having the above-described structure, the solid content 3 and the extractant 11 composed of supercritical CO 2 and toluene are supplied and mixed in the high-pressure vessel 12. For example, when the dioxin extraction treatment is performed under a pressure of 200 to 300 kg / cm 2 G, an oil containing dioxin can be extracted from the solid content 3 with high efficiency.
【００２３】[0023]
【実施例】次に、実施例をもとに本発明の実施の形態を
説明する。ただし、以下の説明は本発明を限定するもの
ではない。Next, embodiments of the present invention will be described based on examples. However, the following description does not limit the present invention.
【００２４】実施例１ 本実施例において、CaOを３０％、SiO2を２０％、Al2O3
を１７％、その他アルカリ分などを３３％含む飛灰を、
本発明の方法によって処理した。Example 1 In this example, 30% of CaO, 20% of SiO 2 and Al 2 O 3
Fly ash containing 17% of alkali and 33% of other alkali components,
Treated by the method of the present invention.
【００２５】まず、酸溶解処理工程を行った。ｐＨ２〜
７の塩酸（HCl）中に飛灰を供給し、常温で約１時間溶
解した後、酸溶解濾液と固形分に分離した。得られた固
形分はダイオキシン抽出処理工程に送られた。ダイオキ
シン処理工程では、固形分に飛灰の重量の約１０倍のト
ルエンを加え、約５時間、約１００℃に加熱することに
よって、ダイオキシンを抽出した。ここで残った固形分
を取り出し、乾燥することにより陶器用原材料とした。
得られた陶器用原材料の組成は、SiO2が５４％、Al2O3
が４５％で、その他の成分が１％以下であった。First, an acid dissolving treatment step was performed. pH2
The fly ash was supplied into hydrochloric acid (HCl) of No. 7 and dissolved at room temperature for about 1 hour, and then separated into an acid-dissolved filtrate and a solid content. The obtained solid was sent to a dioxin extraction treatment step. In the dioxin treatment step, dioxin was extracted by adding about 10 times the weight of fly ash to the solid content and heating to about 100 ° C. for about 5 hours. The remaining solid content was taken out and dried to obtain a ceramic raw material.
The composition of the obtained ceramic raw material is as follows: SiO 2 is 54%, Al 2 O 3
Was 45%, and other components were 1% or less.
【００２６】このようにして、本発明の方法を用いるこ
とで、飛灰からダイオキシンなどの有害物質を除去し、
約４０％の収率で陶器用原材料であるSiO2とAl2O3の混
合物を得ることができた。In this way, by using the method of the present invention, harmful substances such as dioxin are removed from fly ash,
A mixture of SiO 2 and Al 2 O 3 , which are ceramic raw materials, was obtained with a yield of about 40%.
【００２７】[0027]
【発明の効果】以上のように、本発明によれば、ダイオ
キシンを含む有害な飛灰を無害化することができると共
に、ダイオキシンが抽出されて無害化した飛灰を、有価
物の陶器用原材料として有効活用することができる。ま
た、処理済の飛灰が有効利用されるので、埋立てられる
飛灰が減少し、最終処分場の負荷を小さくすることがで
きる。As described above, according to the present invention, harmful fly ash containing dioxin can be detoxified, and the fly ash from which dioxin has been extracted and made harmless can be used as valuable raw material for pottery. Can be used effectively. Further, since the treated fly ash is effectively used, the fly ash to be buried is reduced, and the load on the final disposal site can be reduced.
【図１】図１は、本発明の実施例１の陶器用原材料の製
造方法のブロック図である。FIG. 1 is a block diagram of a method for manufacturing a ceramic raw material according to a first embodiment of the present invention.
【図２】図２は，実施例２の陶器用原材料の製造方法を
示すブロック図である。FIG. 2 is a block diagram illustrating a method for manufacturing a ceramic raw material according to a second embodiment.
【図３】図３は、従来の、飛灰に含まれるダイオキシン
を分解し無害化するダイオキシン分解方法の一例を示す
ブロック図である。FIG. 3 is a block diagram showing an example of a conventional dioxin decomposition method for decomposing dioxin contained in fly ash to render it harmless.
【図４】図４は、従来の、飛灰に含まれるダイオキシン
を分解し無害化するダイオキシン分解方法の別の例を示
すブロック図である。FIG. 4 is a block diagram showing another example of a conventional dioxin decomposition method for decomposing and rendering harmless dioxins contained in fly ash.
１ 飛灰 ２ 酸 ３ 固形分 ４ 酸溶解濾液 ５ 抽出剤 ６ 固形分 ７ 抽出液 ８ 電子線 ９ 残渣 １０ 溶媒 １１ 超臨界状態のCO2 １２ 高圧容器REFERENCE SIGNS LIST 1 fly ash 2 acid 3 solid content 4 acid-dissolved filtrate 5 extractant 6 solid content 7 extract 8 electron beam 9 residue 10 solvent 11 supercritical CO 2 12 high pressure vessel
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｆ２３Ｇ 5/44 ＺＡＢ Ｂ０９Ｂ 3/00 ＺＡＢ Ｆ２３Ｊ 1/00 ３０４Ｇ Ｆターム(参考） 3K061 NA01 NA07 NA13 3K065 AA18 AB03 AC03 BA01 HA07 4D004 AA37 AB03 AB07 BA10 CA13 CA34 CA39 CA50 CC01 CC04 CC12 DA02 DA07 4D056 AB01 AB17 AC03 AC24 CA01 CA13 CA17 CA21 CA39 DA02Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (Reference) F23G 5/44 ZAB B09B 3/00 ZAB F23J 1/00 304G F-term (Reference) 3K061 NA01 NA07 NA13 3K065 AA18 AB03 AC03 BA01 HA07 4D004 AA37 AB03 AB07 BA10 CA13 CA34 CA39 CA50 CC01 CC04 CC12 DA02 DA07 4D056 AB01 AB17 AC03 AC24 CA01 CA13 CA17 CA21 CA39 DA02
Claims (4)
するステップと、溶解液から酸溶解濾液を抜き出した後
の固形分に抽出剤を加えてダイオキシンを抽出するステ
ップと、ダイオキシンが抽出された後の固形分を取り出
して陶器用原材料を得るステップとを含むことを特徴と
する陶器用原材料の製造方法。1. A step of dissolving fly ash generated by incineration or the like with an acid, a step of extracting dioxin by adding an extractant to a solid content after extracting an acid-dissolved filtrate from the dissolution solution, and extracting dioxin. Removing the solid content after the sintering to obtain a pottery raw material.
エンを含むことを特徴とする請求項１記載の陶器用原材
料の製造方法。2. The method according to claim 1, wherein the acid includes hydrochloric acid, and the extractant includes toluene.
加圧下で抽出処理を行うことを特徴とする請求項１又は
請求項２記載の陶器用原材料の製造方法。3. The extractant comprises CO 2 in a supercritical state,
The method for producing a raw material for pottery according to claim 1 or 2, wherein the extraction treatment is performed under pressure.
の陶器用原材料の製造方法によって製造した陶器用原材
料。4. A pottery raw material produced by the method for producing a pottery raw material according to any one of claims 1 to 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000236392A JP2002053365A (en) | 2000-08-04 | 2000-08-04 | Method for producing raw material for pottery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000236392A JP2002053365A (en) | 2000-08-04 | 2000-08-04 | Method for producing raw material for pottery |
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| Publication Number | Publication Date |
|---|---|
| JP2002053365A true JP2002053365A (en) | 2002-02-19 |
Family
ID=18728440
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008029967A (en) * | 2006-07-28 | 2008-02-14 | Nagasaki Ryoden Tecnica Kk | Method and apparatus for treating contaminants |
| CN111018541A (en) * | 2019-12-13 | 2020-04-17 | 郴州万墨环保科技有限公司 | Garbage fly ash treatment method |
-
2000
- 2000-08-04 JP JP2000236392A patent/JP2002053365A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008029967A (en) * | 2006-07-28 | 2008-02-14 | Nagasaki Ryoden Tecnica Kk | Method and apparatus for treating contaminants |
| CN111018541A (en) * | 2019-12-13 | 2020-04-17 | 郴州万墨环保科技有限公司 | Garbage fly ash treatment method |
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