JP2002332585A - Method of preparing sodium hypochlorite and preparation facility for the same - Google Patents
Method of preparing sodium hypochlorite and preparation facility for the sameInfo
- Publication number
- JP2002332585A JP2002332585A JP2001139831A JP2001139831A JP2002332585A JP 2002332585 A JP2002332585 A JP 2002332585A JP 2001139831 A JP2001139831 A JP 2001139831A JP 2001139831 A JP2001139831 A JP 2001139831A JP 2002332585 A JP2002332585 A JP 2002332585A
- Authority
- JP
- Japan
- Prior art keywords
- sodium
- sodium chloride
- sodium hypochlorite
- chloride
- aqueous solution
- 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.)
- Pending
Links
- 239000005708 Sodium hypochlorite Substances 0.000 title claims abstract description 29
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 48
- 239000000428 dust Substances 0.000 claims abstract description 25
- 239000011780 sodium chloride Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 239000007864 aqueous solution Substances 0.000 claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000003014 ion exchange membrane Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims abstract description 6
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000243 solution Substances 0.000 claims abstract description 5
- 229940079593 drug Drugs 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 239000007795 chemical reaction product Substances 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 150000001805 chlorine compounds Chemical group 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 5
- 239000002912 waste gas Substances 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 description 8
- 230000002378 acidificating effect Effects 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 235000017168 chlorine Nutrition 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 235000017550 sodium carbonate Nutrition 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000645 desinfectant Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 101100316860 Autographa californica nuclear polyhedrosis virus DA18 gene Proteins 0.000 description 1
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 1
- 102100029777 Eukaryotic translation initiation factor 3 subunit M Human genes 0.000 description 1
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 1
- 101001012700 Homo sapiens Eukaryotic translation initiation factor 3 subunit M Proteins 0.000 description 1
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 125000001309 chloro group Chemical class Cl* 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は次亜塩素酸ナトリウ
ムの製造方法とその製造設備に関し、詳しくは、製造コ
ストを顕著に低減可能な次亜塩素酸ナトリウムの製造方
法とその製造設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing sodium hypochlorite and a facility for producing the same, and more particularly, to a method for producing sodium hypochlorite and a facility for producing the same, which can remarkably reduce the production cost.
【０００２】[0002]
【従来の技術】次亜塩素酸ナトリウムは、漂白剤、殺菌
消毒剤、各種酸化剤などとして、工業的に広く利用され
ており、特に最近では、水道水の殺菌処理に、従来の塩
素ガス注入に代って、取り扱いの容易さから大量に使用
されている。2. Description of the Related Art Sodium hypochlorite is widely used industrially as a bleaching agent, a disinfectant and a disinfectant, and various oxidizing agents. Instead, they are used in large quantities for ease of handling.
【０００３】次亜塩素酸ナトリウムの製造方法は、塩化
ナトリウム水溶液を隔膜を用いることなく電解したり、
水酸化ナトリウムの冷水溶液に塩素を通流させたりする
等が一般的である。A method for producing sodium hypochlorite is to electrolyze an aqueous solution of sodium chloride without using a diaphragm,
It is common to pass chlorine through a cold aqueous solution of sodium hydroxide.
【０００４】一方、都市ごみや産業廃棄物などには塩素
が含まれており、これらを焼却した際に塩化水素が発生
するため、この中和処理に消石灰やナトリウム系の薬剤
を用いた乾式排ガス処理に採用され、ばいじん量の増加
につながり、最終処分費が高くなっていた。[0004] On the other hand, municipal solid waste and industrial waste contain chlorine, and hydrogen chloride is generated when incinerated. Therefore, dry exhaust gas using slaked lime or sodium-based chemicals for this neutralization treatment. It was adopted for processing, which led to an increase in the amount of dust, and the final disposal cost was high.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、次亜塩
素酸ナトリウムが大量に使用される用途が増えるに従
い、できるだけ製造コストを安くすることが必要であ
り、より低い製造コストで製造する技術の出現の要請は
強いものがある。However, as the number of applications in which sodium hypochlorite is used in large quantities increases, it is necessary to reduce the production cost as much as possible. The demands are strong.
【０００６】そこで本発明者らは、被焼却物である都市
ごみ、産業廃棄物などを焼却処理する焼却炉などにおい
てその排ガス中の酸性成分（特に、ＨＣｌなど）を特に
乾式法で処理する際に、炭酸水素ナトリウム（重曹）な
どのアルカリ化合物からなる薬剤を使用するが、その反
応生成物の大部分（９０％以上にもなる場合がある）が
塩化ナトリウムであることを見出して、その有効利用を
図ることに成功し、本発明を完成したものである。Accordingly, the present inventors have developed a method for treating acidic components (especially, HCl, etc.) in the exhaust gas in an incinerator for incinerating municipal waste, industrial waste, and the like, which are incinerated, particularly by a dry method. A chemical consisting of an alkaline compound such as sodium bicarbonate (sodium bicarbonate) is used, but it is found that most of the reaction products (sometimes as much as 90% or more) are sodium chloride. The invention has been successfully used and the present invention has been completed.
【０００７】すなわち、本発明の目的は、最終処分（埋
立）費を削減し、かつ従来技術に比べて製造コストが格
段に低減可能な次亜塩素酸ナトリウムの製造方法とその
製造設備を提供することにある。[0007] That is, an object of the present invention is to provide a method for producing sodium hypochlorite and a facility for producing sodium hypochlorite, which can reduce final disposal (landfill) costs and can significantly reduce production costs as compared with the prior art. It is in.
【０００８】[0008]
【課題を解決するための手段】上記目的は各請求項記載
の発明により達成される。すなわち、本発明に係る次亜
塩素酸ナトリウムの製造方法の特徴構成は、被焼却物を
焼却する炉から発生する排ガス中の塩化水素をアルカリ
化合物からなる薬剤で処理し、ばいじんおよび／又はそ
の反応生成物を取り出し、水を加えて塩化ナトリウムを
主成分とする水溶液を作成し、水溶しない物質は除去後
あるいはそのまま塩化ナトリウム以外の物質をイオン交
換膜で除去し、得られた塩化ナトリウム水溶液を電解処
理して次亜塩素酸ナトリウムを得ることにある。The above object is achieved by the invention described in each claim. That is, the characteristic configuration of the method for producing sodium hypochlorite according to the present invention is that hydrogen chloride in exhaust gas generated from an incinerator for incinerated material is treated with a chemical agent composed of an alkali compound, soot and / or its reaction. The product is taken out and water is added to make an aqueous solution containing sodium chloride as a main component. After removing insoluble substances or removing substances other than sodium chloride with an ion exchange membrane, the resulting aqueous sodium chloride solution is electrolyzed. Treatment to obtain sodium hypochlorite.
【０００９】この構成によれば、本来的に廃棄処理する
反応生成物を有効利用することになるので、反応生成物
の除去処分に要する費用を削減できることも相まって、
次亜塩素酸ナトリウムの製造を従来技術に比べて格段に
安価にできるようになる。被焼却物が、都市ごみや産業
廃棄物などの場合、塩化ビニール系の廃プラスチックや
水溶性の塩素、各種有機塩素類がかなりの量含まれてい
るため、加熱・焼却された排ガス中に酸性成分が多量に
含まれており、排ガスの中和処理に際して、発生する反
応生成物も多量となり、結果的に次亜塩素酸ナトリウム
の製造コストを著しく低減できることになる。According to this structure, the reaction product originally disposed of is effectively used, so that the cost required for removing and disposing the reaction product can be reduced.
The production of sodium hypochlorite can be made much cheaper than the prior art. If the incinerated material is municipal waste or industrial waste, it contains a considerable amount of vinyl chloride waste plastic, water-soluble chlorine and various organic chlorines. Since the components are contained in large amounts, the amount of reaction products generated during the neutralization treatment of exhaust gas is also large, and as a result, the production cost of sodium hypochlorite can be significantly reduced.
【００１０】前記薬剤が、炭酸水素ナトリウム、炭酸ナ
トリウム、水酸化ナトリウムのいずれか又はこれらの１
種以上が含まれる混合物であることが好ましい。[0010] The drug may be any of sodium hydrogencarbonate, sodium carbonate, sodium hydroxide or one of these.
Preferably, it is a mixture containing more than one species.
【００１１】これらのアルカリ化合物は排ガス中の酸性
成分との反応効率が高く、反応生成物として大量の塩化
ナトリウムを効率よく生成するので都合がよい。特に、
炭酸水素ナトリウムは１４０〜３００℃程度に加熱され
ると多孔質化するので、その比表面積が拡張され顕著に
活性化されるので、酸性ガス成分の中和処理を行う上で
好ましい。These alkali compounds are convenient because they have high reaction efficiency with acidic components in exhaust gas and efficiently produce a large amount of sodium chloride as a reaction product. In particular,
Since sodium bicarbonate becomes porous when heated to about 140 to 300 ° C., its specific surface area is expanded and markedly activated, so that it is preferable for neutralizing the acidic gas component.
【００１２】前記排ガス処理中の塵芥および／又は反応
生成物を集塵手段により処理するようになっており、こ
の集塵手段の上流側に前記薬剤の導入を行うと共に、こ
の導入の直前に、前記薬剤を粉砕することが好ましい。The dust and / or reaction product during the treatment of the exhaust gas is treated by dust collecting means. The chemical is introduced upstream of the dust collecting means, and immediately before the introduction, Preferably, the drug is crushed.
【００１３】この構成によれば、導入された薬剤が迂回
路を経由した排ガスに晒されるので、加熱・滞留時間を
長く確保できて十分に活性化され、排ガス中の酸性ガス
成分との反応が促進されるので、効率の良い中和処理が
可能となって都合がよい。しかも、迂回路に導入する薬
剤を導入直前に粉砕しているので、貯槽内でのブリッジ
も生じることなく安定した薬剤の供給が可能となる。According to this configuration, the introduced chemical is exposed to the exhaust gas passing through the detour, so that the heating and residence time can be ensured for a long time, the activation is sufficiently activated, and the reaction with the acidic gas component in the exhaust gas is achieved. Since it is promoted, efficient neutralization treatment can be performed, which is convenient. In addition, since the medicine to be introduced into the bypass is crushed immediately before introduction, stable supply of the medicine can be achieved without causing a bridge in the storage tank.
【００１４】更に、本発明に係る次亜塩素酸ナトリウム
の製造設備の特徴構成は、被焼却物を焼却する炉から発
生する排ガスを処理する集塵手段と接続可能になってい
ると共に、この集塵手段から排出される塩化ナトリウム
を多量に含む捕集灰（ばいじん）を溶解する水を投入可
能になっている前処理槽と、この前処理槽と接続されて
いて前処理槽で溶解された塩化ナトリウム主成分とする
溶液を受け入れると共に、受け入れた塩化ナトリウムを
電解処理する電解槽とを有することにある。Further, the characteristic configuration of the sodium hypochlorite production equipment according to the present invention is such that it can be connected to dust collecting means for treating exhaust gas generated from an incinerator for incinerators, A pretreatment tank capable of introducing water for dissolving collected ash (soot and dust) containing a large amount of sodium chloride discharged from dust means, and a pretreatment tank connected to the pretreatment tank and dissolved in the pretreatment tank An electrolytic cell for receiving a solution containing sodium chloride as a main component and electrolyzing the received sodium chloride.
【００１５】この構成によれば、被焼却物を加熱して処
理する焼却炉などから発生する大量の酸性成分を中和処
理した反応生成物を、有価物として有効利用することに
なるので、反応生成物の除去処分に要する費用を削減で
きることも相まって、次亜塩素酸ナトリウムの製造を従
来技術に比べて格段に安価にできるようになる。その結
果、従来技術に比べて製造コストが格段に低減可能な次
亜塩素酸ナトリウムの製造設備を提供することができ
た。According to this configuration, a reaction product obtained by neutralizing a large amount of acidic components generated from an incinerator or the like that heats and treats the incinerated material can be effectively used as a valuable material. This, coupled with the reduced cost of removing and disposing of the product, makes the production of sodium hypochlorite much cheaper than in the prior art. As a result, it was possible to provide a sodium hypochlorite production facility capable of significantly reducing the production cost as compared with the prior art.
【００１６】[0016]
【発明の実施の形態】本発明の実施の形態を、図面を参
照して詳細に説明する。図１は、加熱炉の一例であるゴ
ミ焼却炉（図外）に接続されている次亜塩素酸ナトリウ
ムの製造設備の概略全体構成を示す。Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a schematic overall configuration of a sodium hypochlorite production facility connected to a refuse incinerator (not shown) which is an example of a heating furnace.
【００１７】この次亜塩素酸ナトリウムの製造設備は、
ゴミ焼却炉に接続された排ガス処理設備と、この排ガス
処理設備により生成された塩化ナトリウムを取り出し、
水酸化ナトリウムと塩素に電解処理する装置として次亜
塩素酸ナトリウムを製造する装置とから構成されてい
る。This sodium hypochlorite production facility is:
Take out the exhaust gas treatment equipment connected to the garbage incinerator and the sodium chloride generated by this exhaust gas treatment equipment,
An apparatus for electrolytically processing sodium hydroxide and chlorine includes an apparatus for producing sodium hypochlorite.
【００１８】すなわち、排ガス処理設備は、図外の焼却
炉から排出された排ガスが、減温器１に導入されてか
ら、バグフィルター等からなる集塵手段である集塵機２
に上流側ダクト３ａを経由して供給されるようになって
おり、その途中で薬剤が吹き込まれて、排ガス中の塩化
水素を主成分とする酸性ガス成分が中和処理されると共
に、ばいじんなどが取り除かれ、下流側ダクト３ｂを経
由し誘引通風機４を介して清浄になった排ガスを煙突５
から大気に放出する。薬剤供給手段は、薬剤貯槽６と、
定量供給機７とからなる。薬剤貯槽６には、平均粒径１
００〜１５０μｍ程度の炭酸水素ナトリウム、炭酸ナト
リウム（ソーダ灰）、水酸化ナトリウム等のアルカリ化
合物の１種または２種以上の混合物からなるアルカリ性
薬剤が貯留されている。That is, in the exhaust gas treatment equipment, after the exhaust gas discharged from the incinerator (not shown) is introduced into the desuperheater 1, the dust collector 2 serving as dust collecting means including a bag filter or the like is used.
Is supplied through an upstream duct 3a, and a chemical is blown in the middle thereof to neutralize an acidic gas component containing hydrogen chloride as a main component in the exhaust gas and to remove dust and the like. Is removed, and the exhaust gas that has been cleaned via the induction duct 4 via the downstream duct 3b is passed through the chimney 5
Release to the atmosphere from. The medicine supply means includes a medicine storage tank 6,
And a quantitative feeder 7. The medicine storage tank 6 has an average particle size of 1
Alkaline chemicals of about 100 to 150 μm, which are composed of one or a mixture of two or more alkaline compounds such as sodium bicarbonate, sodium carbonate (soda ash) and sodium hydroxide, are stored.
【００１９】粉砕手段Ｃとしては、市販の各種粉砕機を
使用できるが、薬剤を平均粒径２０μｍ以下程度の微粉
砕化を容易にできる粉砕機を使用することが、反応を促
進する上で好ましい。この粉砕機で処理された薬剤を集
塵機２の上流側ダクト３ａに供給する。As the pulverizing means C, various commercially available pulverizers can be used. However, it is preferable to use a pulverizer capable of easily pulverizing a chemical having an average particle diameter of about 20 μm or less from the viewpoint of accelerating the reaction. . The chemical treated by this pulverizer is supplied to the upstream duct 3a of the dust collector 2.
【００２０】集塵機２に吹き込まれた薬剤による反応生
成物として塩化ナトリウムが生成されるが、生成された
塩化ナトリウムなどの生成物を集塵機２の排出口２ａか
ら取り出して前処理槽８に送給する。この前処理槽８で
水を導入し、塩化ナトリウムを溶かして水溶液にすると
共に、他の不純物を沈降分離、あるいはろ過膜などを用
いて分別除去するか、そのまま電解槽１１に送られる。
塩化ナトリウムを含む水溶液は、電解槽１１に送られて
電解処理される。電解槽１１はイオン交換膜１２で仕切
られている。塩化ナトリウムを含む水溶液は陽極側な注
入され、ナトリウムイオン（Ｎａ+ ）はイオン交換膜を
通り抜け、陰極側に集められる。このとき、塩化ナトリ
ウムを含む水溶液に含まれていたＮａ2 ＳＯ4 などの不
純物は、陽極側に残り分離除去されるため、陰極側では
高濃度のＮａＯＨが生成される。また、陽極側で発生し
たＣｌ2 と陰極側で生成したＮａＯＨは、反応槽１３に
注入され、次亜塩素酸ナトリウムが生成される。尚、図
中Ｅは直流電源であり、１１ａは陽極、１１ｂは陰極を
示す。Although sodium chloride is generated as a reaction product by the chemicals blown into the dust collector 2, the generated product such as sodium chloride is taken out from the discharge port 2 a of the dust collector 2 and sent to the pretreatment tank 8. . Water is introduced into the pretreatment tank 8 to dissolve sodium chloride into an aqueous solution, and other impurities are settled and separated, or separated and removed using a filtration membrane or the like, or sent directly to the electrolytic cell 11.
The aqueous solution containing sodium chloride is sent to the electrolytic cell 11 and subjected to electrolytic treatment. The electrolytic cell 11 is partitioned by an ion exchange membrane 12. An aqueous solution containing sodium chloride is injected on the anode side, and sodium ions (Na + ) pass through the ion exchange membrane and are collected on the cathode side. At this time, impurities such as Na 2 SO 4 contained in the aqueous solution containing sodium chloride remain on the anode side and are separated and removed, so that high-concentration NaOH is generated on the cathode side. Further, Cl 2 generated on the anode side and NaOH generated on the cathode side are injected into the reaction vessel 13 to generate sodium hypochlorite. In the figure, E denotes a DC power supply, 11a denotes an anode, and 11b denotes a cathode.
【００２１】そのときの陽極、陰極での反応は以下の通
りである。The reactions at the anode and cathode at that time are as follows.
【００２２】（陽極） ２Ｃｌ- →Ｃｌ2 ＋２ｅ- （陰極） ２Ｎａ+ ＋２Ｈ2 Ｏ＋２ｅ- →２ＮａＯＨ＋
Ｈ2 ↑ 更に、液中にて次の反応が生じる。 Ｃｌ2 ＋２ＮａＯＨ→２ＮａＣｌＯ＋Ｈ2 ↑ このようにして得られた次亜塩素酸ナトリウムは、集塵
機２での排ガス処理と連動して連続的に生成されるもの
であるため、大量に安価に製造されることになる。尚、
前処理槽８で除去された不純物は、溶融するなどして無
害化し、スラグなどとして再利用してもよい。(Anode) 2Cl − → Cl 2 + 2e − (Cathode) 2Na + + 2H 2 O + 2e − → 2NaOH +
H 2 ↑ Furthermore, the following reaction occurs in the liquid. Cl 2 + 2NaOH → 2NaClO + H 2ナ ト リ ウ ム Since the sodium hypochlorite thus obtained is continuously produced in conjunction with the exhaust gas treatment in the dust collector 2, it can be produced in large quantities at low cost. become. still,
The impurities removed in the pretreatment tank 8 may be rendered harmless by melting or the like and reused as slag or the like.
【００２３】〔別実施の形態〕 （１）上記実施形態では、集塵機２の上流側に直接導入
する方式を示したが、薬剤の投入を集塵機２の上流側に
導入する迂回路を設けて、この迂回路の途中に、薬剤の
供給を行うようにした方式を採用してもよい。[Another Embodiment] (1) In the above embodiment, the system in which the dust is introduced directly upstream of the dust collector 2 has been described. A system in which the medicine is supplied in the course of the detour may be adopted.
【００２４】（２）上記実施形態では、集塵機が１台の
みの例を示したが、もとより集塵機を複数台並列させて
集塵機能を高めた場合には、より大量かつ安価に次亜塩
素酸ナトリウムを製造できる。更に、集塵機を２台並設
してこれら集塵機間に迂回路を設けて、この迂回路に薬
剤を導入するように構成してもよい。(2) In the above embodiment, an example in which only one dust collector is provided has been described. However, when a plurality of dust collectors are arranged in parallel to enhance the dust collecting function, sodium hypochlorite can be used in a larger amount and at a lower cost. Can be manufactured. Further, two dust collectors may be arranged in parallel, a bypass may be provided between the dust collectors, and the medicine may be introduced into the bypass.
【００２５】（３）上記実施形態では、電解槽としては
その陽極、陰極を隔てる中間にイオン交換膜を設けた隔
膜方式を使用したが、電解槽として無隔膜式を採用して
もよい。その場合、不純物が混入するため。次亜塩素酸
ナトリウムの純度は低下する。(3) In the above embodiment, a diaphragm system in which an ion exchange membrane is provided in the middle between an anode and a cathode is used as an electrolytic bath, but a non-diaphragm system may be adopted as an electrolytic bath. In that case, impurities are mixed. The purity of sodium hypochlorite decreases.
【００２６】（４）上記電解槽１１での電解用電力とし
て、ごみ焼却炉などから発生する廃熱を図外の廃熱ボイ
ラーに導入し、過熱蒸気を発生させて蒸気タービンを作
動させて発電させ、その電力を利用すると、一層低コス
トで次亜塩素酸ナトリウムを製造できる。(4) As electric power for electrolysis in the electrolytic cell 11, waste heat generated from a refuse incinerator or the like is introduced into a waste heat boiler (not shown) to generate superheated steam and operate a steam turbine to generate power. By using the electric power, sodium hypochlorite can be produced at lower cost.
【００２７】（５）本発明を利用する焼却炉は、ガス化
溶融炉、その他各種大型、小型焼却炉などの各種焼却炉
のみならず、排ガス処理をする必要があり、排ガス処理
として炭酸水素ナトリウムなどアルカリ化合物からなる
薬剤を使用する形式の加熱炉に広く適用できる。(5) The incinerator using the present invention is not limited to various types of incinerators such as a gasification melting furnace and various other large and small incinerators, and it is necessary to treat exhaust gas. For example, it can be widely applied to a heating furnace of a type using a chemical comprising an alkali compound.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明に係る次亜塩素酸ナトリウムの製造方法
に使用する製造設備の一実施形態を表す概略全体構成図FIG. 1 is a schematic overall configuration diagram showing an embodiment of a production facility used for a method for producing sodium hypochlorite according to the present invention.
２ 集塵手段 ８ 前処理槽 １１ 電解槽 １２ イオン交換膜 Ｃ 粉砕手段 2 Dust collecting means 8 Pretreatment tank 11 Electrolytic tank 12 Ion exchange membrane C Crushing means
───────────────────────────────────────────────────── 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） Ｃ０２Ｆ 1/44 Ｂ０９Ｂ 3/00 ３０４Ｇ Ｃ２５Ｂ 9/00 Ｃ２５Ｂ 9/00 Ｃ Ｆターム(参考） 4D002 AA19 AC04 BA03 CA11 DA02 DA12 DA16 EA05 EA06 EA07 FA04 4D004 AA37 AB06 AC04 BA06 CA41 CB01 CB41 CC03 4D006 GA17 MA03 MB07 PA01 PA02 PB08 PC80 4K021 AB07 BA03 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C02F 1/44 B09B 3/00 304G C25B 9/00 C25B 9/00 CF Term (Reference) 4D002 AA19 AC04 BA03 CA11 DA02 DA12 DA16 EA05 EA06 EA07 FA04 4D004 AA37 AB06 AC04 BA06 CA41 CB01 CB41 CC03 4D006 GA17 MA03 MB07 PA01 PA02 PB08 PC80 4K021 AB07 BA03
Claims (3)
ス中の塩化水素をアルカリ化合物からなる薬剤で処理
し、ばいじんおよび／又はその反応生成物を取り出し、
水を加えて塩化ナトリウムを主成分とする水溶液を作成
し、水溶しない物質は除去後あるいはそのまま塩化ナト
リウム以外の物質をイオン交換膜で除去し、得られた塩
化ナトリウム水溶液を電解処理して次亜塩素酸ナトリウ
ムを得る次亜塩素酸ナトリウムの製造方法。1. A method for treating hydrogen chloride in exhaust gas generated from an incinerator for incinerators with an agent composed of an alkali compound to remove soot and / or a reaction product thereof.
Water is added to make an aqueous solution containing sodium chloride as a main component. Substances that are not soluble in water are removed or substances other than sodium chloride are removed with an ion-exchange membrane, or the resulting aqueous solution of sodium chloride is subjected to electrolytic treatment to remove hypochlorite. A method for producing sodium hypochlorite to obtain sodium chlorate.
ナトリウム、水酸化ナトリウムのいずれか又はこれらの
１種以上が含まれる混合物である請求項１の次亜塩素酸
ナトリウムの製造方法。2. The method for producing sodium hypochlorite according to claim 1, wherein the drug is any one of sodium hydrogen carbonate, sodium carbonate, and sodium hydroxide, or a mixture containing at least one of them.
スを処理する集塵手段と接続可能になっていると共に、
この集塵手段から排出される塩化ナトリウムを多量に含
む捕集灰を溶解する水を投入可能になっている前処理槽
と、この前処理槽と接続されていて前処理槽で溶解され
た塩化ナトリウム主成分とする溶液を受け入れると共
に、受け入れた塩化ナトリウムを電解処理する電解槽と
を有する次亜塩素酸ナトリウムの製造設備。3. It is connectable to dust collecting means for treating exhaust gas generated from an incinerator for incinerators.
A pretreatment tank capable of introducing water for dissolving the collected ash containing a large amount of sodium chloride discharged from the dust collecting means, and a chloride connected to the pretreatment tank and dissolved in the pretreatment tank. An apparatus for producing sodium hypochlorite, comprising: an electrolytic tank for receiving a solution containing sodium as a main component and electrolyzing the received sodium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001139831A JP2002332585A (en) | 2001-05-10 | 2001-05-10 | Method of preparing sodium hypochlorite and preparation facility for the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001139831A JP2002332585A (en) | 2001-05-10 | 2001-05-10 | Method of preparing sodium hypochlorite and preparation facility for the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002332585A true JP2002332585A (en) | 2002-11-22 |
Family
ID=18986541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001139831A Pending JP2002332585A (en) | 2001-05-10 | 2001-05-10 | Method of preparing sodium hypochlorite and preparation facility for the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002332585A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453449C (en) * | 2006-01-25 | 2009-01-21 | 宜宾天原集团股份有限公司 | Method and apparatus for continuous production of high-concentrated sodium hypochlorite |
| KR100914679B1 (en) * | 2008-05-16 | 2009-08-28 | 주식회사 태현수기 | Electrolytic sodium hypochlorite generating system |
| CN108358170A (en) * | 2018-05-24 | 2018-08-03 | 李雪 | A kind of calcium hypochlorite production environmental protecting device |
| CN111334816A (en) * | 2020-04-20 | 2020-06-26 | 浙江高成绿能科技有限公司 | Method for preparing hypochlorous acid water by electrolysis |
-
2001
- 2001-05-10 JP JP2001139831A patent/JP2002332585A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453449C (en) * | 2006-01-25 | 2009-01-21 | 宜宾天原集团股份有限公司 | Method and apparatus for continuous production of high-concentrated sodium hypochlorite |
| KR100914679B1 (en) * | 2008-05-16 | 2009-08-28 | 주식회사 태현수기 | Electrolytic sodium hypochlorite generating system |
| CN108358170A (en) * | 2018-05-24 | 2018-08-03 | 李雪 | A kind of calcium hypochlorite production environmental protecting device |
| CN111334816A (en) * | 2020-04-20 | 2020-06-26 | 浙江高成绿能科技有限公司 | Method for preparing hypochlorous acid water by electrolysis |
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