JPS631146Y2 - - Google Patents
Info
- Publication number
- JPS631146Y2 JPS631146Y2 JP1982189298U JP18929882U JPS631146Y2 JP S631146 Y2 JPS631146 Y2 JP S631146Y2 JP 1982189298 U JP1982189298 U JP 1982189298U JP 18929882 U JP18929882 U JP 18929882U JP S631146 Y2 JPS631146 Y2 JP S631146Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- drain
- electrolytic cell
- exhaust
- condensate
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 238000006386 neutralization reaction Methods 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Description
【考案の詳細な説明】
この考案は熱効率を向上する目的で排熱回収用
熱交換器を設け、該熱交換器の外面に発生する有
害成分を含むドレンを電気分解するようにした湯
沸器に関するもので、排熱回収用熱交換器におい
て生ずるドレン水に排気中のSOX、NOXが溶け込
んで酸性度の高いH2SO4、HNO3等を生じてドレ
ン排水が有害となるが、この有害なドレンの排出
を防ぐために従来においてはドレンの排出路に酸
性ドレンを中和する金属粒子、粉状無機化合物等
の中和剤を封入した酸性度中和反応装置を設けた
ものがあるが、中和剤に反応速度の差があるため
その選定に制限があり、反応速度は余り大きくし
得ないので接触面積を大きくするのに大型の中和
反応装置が必要で、かつ大きなスペースを要する
欠点があつた。[Detailed description of the invention] This invention is a water heater that is equipped with a heat exchanger for waste heat recovery for the purpose of improving thermal efficiency, and electrolyzes condensate containing harmful components generated on the outer surface of the heat exchanger. Regarding this, the SO x and NO x in the exhaust gas dissolve into the drain water generated in the heat exchanger for exhaust heat recovery, producing highly acidic H 2 SO 4 and HNO 3 , etc., making the drain water harmful. In order to prevent the discharge of this harmful condensate, conventional methods have installed an acidity neutralization reaction device in the drain discharge path, which contains neutralizing agents such as metal particles or powdered inorganic compounds to neutralize the acidic condensate. However, the selection of neutralizing agents is limited due to the difference in reaction rate, and since the reaction rate cannot be increased very much, a large neutralization reactor is required to increase the contact area, and it also takes up a large space. There were some important shortcomings.
この考案は排熱回収用熱交換器において発生す
る有害成分を含むドレンを回収排出する湯沸器に
おいてその回収部或いは排出路にドレンを電気分
解する電解槽を設け、従来のアルカリ性金属等の
中和剤による酸性度中和反応装置により中和をさ
せるものと異り、その中和反応速度の調節ができ
るようになして電極材の選定も容易となし得、排
水ドレンを充分中性として無害としうるようにし
た湯沸器に係るものである。 This idea is to install an electrolytic cell to electrolyze the condensate in the recovery section or discharge path of the water heater that collects and discharges the condensate containing harmful components generated in the heat exchanger for waste heat recovery. Unlike the acidity neutralization reaction device that uses additives for neutralization, the neutralization reaction rate can be adjusted, making it easy to select electrode materials, and making the waste water sufficiently neutral and harmless. This relates to a water heater that can be used as a water heater.
以下にこの考案の実施例を図面に基づいて説明
する。 Examples of this invention will be described below based on the drawings.
第１図に示すように燃焼室１の上方の主熱交換
器２の排気路を直角に屈曲して側方へ水平方向に
排気路３を構成し、その水平方向の排気路３内の
適所に器具の熱効率を向上させる排熱回収用熱交
換器４を設け、主熱交換器２の吸熱管１０の後流
側に排熱回収用熱交換器４の吸熱管１１を接続し
た湯沸器で、前記排熱回収用熱交換器４において
排気中のSOX、NOXが溶け込んで生じる有害な
H2SO4、HNO3等を含むドレンを回収する樋状の
ドレン受皿５を該熱交換器４の直下の排気路３の
下壁面に設け、このドレン受皿５に排出路６を接
続して設けて、排出路６に前記の有害なドレン水
を電気分解する電解槽７を備える。 As shown in FIG. 1, the exhaust passage of the main heat exchanger 2 above the combustion chamber 1 is bent at right angles to form an exhaust passage 3 horizontally to the side, and a suitable location within the horizontal exhaust passage 3 is formed. A water heater in which a heat exchanger 4 for waste heat recovery is installed to improve the thermal efficiency of the appliance, and the heat absorption pipe 11 of the heat exchanger 4 for waste heat recovery is connected to the downstream side of the heat absorption pipe 10 of the main heat exchanger 2. In the exhaust heat recovery heat exchanger 4, the harmful SOx and NOx in the exhaust gas are dissolved.
A gutter-shaped drain tray 5 for collecting drain containing H 2 SO 4 , HNO 3 , etc. is provided on the lower wall surface of the exhaust passage 3 directly below the heat exchanger 4, and a discharge passage 6 is connected to this drain tray 5. The discharge path 6 is provided with an electrolytic cell 7 for electrolyzing the harmful drain water.
電解槽７は第２図に示すように水素よりイオン
化傾向の大きい金属Zn、Mg材等からなる陽極
８、溶出しないような炭素電極等からなる陰極９
を備え、両極に電圧をかけてドレン水を電気分解
させて略中性にして無害なドレン水とする。 As shown in FIG. 2, the electrolytic cell 7 has an anode 8 made of a metal such as Zn or Mg, which has a greater tendency to ionize than hydrogen, and a cathode 9 made of a carbon electrode that does not elute.
A voltage is applied to both poles to electrolyze the drain water, making it almost neutral and making it harmless.
即ち電解槽７の陽極８にZnを用いた場合陽極
８の表面でZn→Zn2+＋2e-の反応が行われ、陰極
９の表面で2H+＋2e-→H2の反応が行われ、ドレ
ン水に存在するSO4 2-、NO3 -が陽極８の表面近
くでそれぞれZn2+＋SO4 2-→ZnSO4、Zn2+＋
2NO3 -→Zn（NO3）2となつてその生成物は有害で
ないものとなる。 That is, when Zn is used for the anode 8 of the electrolytic cell 7, the reaction Zn→Zn 2+ +2e - takes place on the surface of the anode 8, the reaction 2H + +2e - →H 2 takes place on the surface of the cathode 9, and the drain SO 4 2- and NO 3 - present in water transform into Zn 2+ + SO 4 2- → ZnSO 4 and Zn 2+ + near the surface of the anode 8, respectively.
2NO 3 - →Zn(NO 3 ) 2 and the product becomes non-hazardous.
この電解槽７では陽極８、陰極９にかける電圧
を調整して電解槽７における分解反応速度を調節
するようになし、排熱回収用熱交換器４より回収
排出されるドレンに含まれる有害成分のH2SO4、
HNO3を充分分解するに適した電圧に調整して無
害のドレン排水として排出路６へ流出せしめるよ
うになす。又この電気分解において生成された水
素ガスは流出孔７ａより散逸し、ZnSO4、Zn
（NO3）2はドレン水とともに電解槽７よりオーバ
フローして排出路６′へ流出されるから電解槽７
内がH+、2n2+の電気分解ができなくなるような
飽和状態になることはなく、従つて濃度差による
過電圧は増大することはなく、常時一定の電圧に
て電解槽７で安定的にH2SO4、HNO3の電気分解
を行う。 In this electrolytic cell 7, the voltage applied to the anode 8 and the cathode 9 is adjusted to adjust the decomposition reaction rate in the electrolytic cell 7, and the harmful components contained in the drain collected and discharged from the heat exchanger 4 for waste heat recovery are of H 2 SO 4 ,
The voltage is adjusted to be suitable for sufficiently decomposing HNO 3 so that it flows out into the discharge passage 6 as harmless drain water. Moreover, the hydrogen gas generated in this electrolysis is dissipated from the outflow hole 7a, and ZnSO 4 , Zn
(NO 3 ) 2 overflows from the electrolytic cell 7 together with the drain water and flows out to the discharge passage 6'.
Therefore, the electrolytic cell 7 does not reach a saturated state where electrolysis of H + and 2n 2+ is impossible, and therefore the overvoltage due to the concentration difference does not increase, and the electrolytic cell 7 is stably maintained at a constant voltage. Perform electrolysis of H 2 SO 4 and HNO 3 .
上記実施例では排気路３を主熱交換器２の上部
側方へ水平方向へ屈曲してそこに排熱回収用熱交
換器を設けた場合を説明したが、これに限られる
ものでなはなく、主熱交換器の直上の排気路に排
熱回収用熱交換器を設け、その熱交換器において
生ずるドレンを受皿で回収して排出路に排出する
ようにしたものにも適用することができる。又、
電解槽７を排出路６に介挿配設した場合を示した
が、ドレン受皿５にドレン集合部を設けてその中
に陽極、陰極を挿入しても良い。 In the above embodiment, the exhaust passage 3 is bent horizontally to the upper side of the main heat exchanger 2 and the exhaust heat recovery heat exchanger is provided there, but the invention is not limited to this. It can also be applied to systems in which a heat exchanger for exhaust heat recovery is installed in the exhaust passage directly above the main heat exchanger, and the drain generated in the heat exchanger is collected in a saucer and discharged to the exhaust passage. can. or,
Although a case is shown in which the electrolytic cell 7 is inserted and disposed in the discharge path 6, a drain collection part may be provided in the drain tray 5 and the anode and cathode may be inserted therein.
なお、１２は整流装置で、これを介して陽極、
陰極に直流電圧をかける。１３は給水管、１４は
給湯管、１５はガスバーナである。 In addition, 12 is a rectifier, through which the anode,
Apply DC voltage to the cathode. 13 is a water supply pipe, 14 is a hot water supply pipe, and 15 is a gas burner.
前記したこの考案によればドレン排出路等に介
装設置した電解槽においてドレン水に含まれる。
H2SO4、HNO3等を電気分解反応させてZnSO4、
Zn（NO3）2等に変化せしめて無害のドレン排水と
することができ、電解装置は陽極の消耗電極を補
充すれば済むので維持管理は簡便であり、又廃棄
されるドレン水をほぼ完全に無害となし得るので
確実に公害を防止することができる。 According to this invention described above, the water is contained in the drain water in the electrolytic cell installed in the drain discharge path or the like.
Electrolysis reaction of H 2 SO 4 , HNO 3 etc. produces ZnSO 4 ,
Zn(NO 3 ) 2 can be converted into harmless drain water, and maintenance is simple because all you need to do with the electrolyzer is to replenish the consumable anode, and waste water can be almost completely removed. Since it can be made harmless to other people, it is possible to reliably prevent pollution.
第１図はこの考案の湯沸器を示す概略断面図、
第２図は電解槽を説明する拡大断面図である。
１…燃焼室、２…主熱交換器、３…排気路、４
…排熱回収用熱交換器、５…ドレン受皿、６，
６′…排出路、７…電解槽、８…陽極、９…陰極。
Figure 1 is a schematic sectional view showing the water heater of this invention.
FIG. 2 is an enlarged sectional view illustrating the electrolytic cell. 1... Combustion chamber, 2... Main heat exchanger, 3... Exhaust path, 4
...heat exchanger for exhaust heat recovery, 5...drain tray, 6,
6'...Discharge path, 7...Electrolytic cell, 8...Anode, 9...Cathode.
Claims (1)
えた排熱回収用熱交換器４に生ずるドレンを回収
排出するものにおいて、ドレンの回収部６或いは
ドレンを排出する排出路６′に陽極が水素よりイ
オン化傾向の大きい亜鉛やマグネシウム等よりな
る電解槽７を設けて成る湯沸器。 In a device that collects and discharges condensate generated in the exhaust heat recovery heat exchanger 4 provided in the exhaust passage 3 above the main heat exchanger 2 of the combustion chamber 1, the condensate recovery section 6 or the discharge passage 6' that discharges the condensate. The water heater is equipped with an electrolytic cell 7 in which the anode is made of zinc, magnesium, or the like, which has a greater tendency to ionize than hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18929882U JPS5994247U (en) | 1982-12-15 | 1982-12-15 | water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18929882U JPS5994247U (en) | 1982-12-15 | 1982-12-15 | water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5994247U JPS5994247U (en) | 1984-06-26 |
| JPS631146Y2 true JPS631146Y2 (en) | 1988-01-12 |
Family
ID=30408161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18929882U Granted JPS5994247U (en) | 1982-12-15 | 1982-12-15 | water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5994247U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4989242B2 (en) * | 2007-02-05 | 2012-08-01 | 株式会社パロマ | Water heater |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56168054A (en) * | 1980-05-28 | 1981-12-24 | Osaka Gas Co Ltd | Hot water supplier |
-
1982
- 1982-12-15 JP JP18929882U patent/JPS5994247U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56168054A (en) * | 1980-05-28 | 1981-12-24 | Osaka Gas Co Ltd | Hot water supplier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5994247U (en) | 1984-06-26 |
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