JPH066992U - Exhaust heat utilization heat exchanger - Google Patents
Exhaust heat utilization heat exchangerInfo
- Publication number
- JPH066992U JPH066992U JP608391U JP608391U JPH066992U JP H066992 U JPH066992 U JP H066992U JP 608391 U JP608391 U JP 608391U JP 608391 U JP608391 U JP 608391U JP H066992 U JPH066992 U JP H066992U
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- Prior art keywords
- water
- heat exchanger
- nozzle
- heat
- transfer surface
- Prior art date
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
(57)【要約】
【目的】 スクラバ水の排熱利用熱交換器の伝熱面に付
着するダストを除去する。
【構成】 熱交換用パネルによって形成される排水流路
内に洗浄用ノズルを配置してスクラバ水の１部をパネル
伝熱面に噴射する。洗浄用ノズルは拡角フラット撒水型
ノズルである。
【効果】 パネル伝熱面に付着するダストが洗浄水ノズ
ルからの水噴射で除去される。スクラバの運転を中止し
たり、熱交換器を分解する必要もない。しかも、洗浄水
にスクラバ排水を使用するために、排水の洗浄水による
温度降下がなく、高温水を回収できる。
(57) [Summary] [Purpose] To remove dust adhering to the heat transfer surface of the heat exchanger using the waste heat of scrubber water. [Structure] A cleaning nozzle is arranged in a drainage flow path formed by a heat exchange panel, and a part of scrubber water is jetted to a panel heat transfer surface. The cleaning nozzle is a wide angle flat water spray type nozzle. [Effect] Dust adhering to the heat transfer surface of the panel is removed by water injection from the wash water nozzle. There is no need to shut down the scrubber or disassemble the heat exchanger. Moreover, since the scrubber waste water is used as the wash water, the temperature of the waste water does not drop due to the wash water, and the high temperature water can be collected.
Description
【０００１】[0001]
本考案は汚泥焼却設備におけるスクラバ水のごとき温排水排熱を利用した熱交 換器に関する。 The present invention relates to a heat exchanger that uses waste heat from waste water such as scrubber water in a sludge incinerator.
【０００２】[0002]
汚泥焼却設備におけるスクラバ水の排熱利用として熱交換器が用いられている 。排煙処理塔排水中には汚泥焼却灰（ＳＳ濃度は 200〜50ppm 程度）が混入して いる。したがって、通常の多管チュ―ブまたはプレ―ト型熱交換器では、４時間 以上運転すると伝熱面に微粒ダストが付着して総括伝熱係数が低下し、所要の能 力を発揮できなくなる。 Heat exchangers are used as waste heat for scrubber water in sludge incinerators. Sludge incineration ash (SS concentration: 200 to 50 ppm) is mixed in the flue gas treatment tower drainage. Therefore, in a normal multi-tube tube or plate type heat exchanger, if it is operated for 4 hours or more, fine particles of dust will adhere to the heat transfer surface and the overall heat transfer coefficient will decrease, making it impossible to exhibit the required performance. .
【０００３】[0003]
プレ―ト型熱交換器は、コンクリ―ト製排水槽の中に熱交換用パネル（外面を 排水側にし、内面に上水を通す）を等間隔に埋設してなるものであって、パネル 伝熱面間を通過する排水の流速が 0.5m/sec 以下のときにダストが付着する。例 えば流速 0.12m/secの場合に７日間で伝熱面全域にわたって 0.5〜1mm 程度のダ ストが付着する。このように付着したときには、パネル群を排水槽から引揚げて 分解し、伝熱面を洗浄することが必要であるが、分解・洗浄中はスクラバの運転 ができないという問題点があった。 本考案は、付着したダストの除去が容易で、ダスト掃除除去中も運転を継続で きる熱交換器を提供することを目的としている。 The plate type heat exchanger is a concrete drainage tank in which heat exchange panels (the outer surface is the drain side and the clean water is passed through the inner surface) are embedded at equal intervals. Dust adheres when the flow velocity of the wastewater passing between the heat transfer surfaces is 0.5 m / sec or less. For example, when the flow velocity is 0.12 m / sec, a dust of 0.5 to 1 mm adheres to the entire heat transfer surface in 7 days. When it adheres like this, it is necessary to lift the panel group from the drainage tank and disassemble it to clean the heat transfer surface, but there was a problem that the scrubber could not operate during disassembly and cleaning. It is an object of the present invention to provide a heat exchanger that can easily remove adhering dust and can continue operation during dust cleaning.
【０００４】[0004]
上記目的を達成するため、本考案は多数のプレ―ト型熱交換器を埋設した槽内 に、焼却炉用排煙処理塔の温排水を導いて温水を取出す装置において、上記熱交 換器によって形成される排水流路に、上記温排水の１部をプレ―ト型熱交換器の 伝熱面に噴射する多数の洗浄用ノズルを設けたことを特徴とするものである。 洗浄用ノズルは、プレ―ト型熱交換器の伝熱面に対し僅かに傾斜して取付けら れたノズル本体と、ノズル本体の先端面に開口する第１のノズル孔と、排水流路 の下流に向うノズル本体側面に形成させた湾曲切落部と、湾曲切落部に設けた第 ２のノズル孔とを有する拡角フラット撒水型ノズルである。 In order to achieve the above-mentioned object, the present invention is an apparatus for extracting hot water by guiding hot wastewater of a smoke treatment tower for an incinerator into a tank in which a large number of plate-type heat exchangers are embedded, and the above heat exchanger. A large number of cleaning nozzles for injecting a part of the warm waste water onto the heat transfer surface of the plate type heat exchanger are provided in the waste water flow path formed by the above. The cleaning nozzle consists of a nozzle body that is attached at a slight angle to the heat transfer surface of the plate heat exchanger, a first nozzle hole that opens at the tip surface of the nozzle body, and a drainage channel. A wide angle flat water spray type nozzle having a curved cutout portion formed on the side surface of the nozzle body facing downstream and a second nozzle hole provided in the curved cutout portion.
【０００５】[0005]
コンクリ―ト製排水槽の中にプレ―ト型熱交換器を構成する各パネルの外面に スクラバ温排水を流し、内部に上水を通すとともに、各パネルの排水と接触面（ 伝熱面）側に放熱側の排水の１部を洗浄用ノズルより加圧噴射させてパネル伝熱 面に付着したダストを除去する。 洗浄回数は１日３回で、１回の洗浄時間は５分〜15分、洗浄休止間隔は５〜 12時間おき、好ましくは８時間が効果的である。自動運転可能で省力化がなされ ている。 The scrubber warm drainage is made to flow to the outer surface of each panel that constitutes the plate heat exchanger in the concrete drainage tank, and the clean water is passed inside, and the drainage and contact surface of each panel (heat transfer surface) Part of the waste water on the heat radiation side is pressurized and sprayed from the cleaning nozzle to remove dust adhering to the heat transfer surface of the panel. The number of times of washing is 3 times a day, the washing time for one time is 5 minutes to 15 minutes, and the washing pause interval is every 5 to 12 hours, preferably 8 hours. Autonomous driving is possible and labor is saved.
【０００６】[0006]
図１は本考案は排熱利用熱交換器を用いた設備の配置図を示し、図２は同上熱 交換器の平面図、図３は縦断面図を示す。 排煙処理塔からのスクラバ水（温水65℃、５μｍダストを含む）は、ライン 10からタンク11に入り、スクラバ水給水ポンプ12ａ，12ｂによりポンプアップさ れ、スクラバ水供給ライン13ａおよび洗浄ライン13ｂによって排水槽14に送られ る。排水槽14には、図２以下を参照して後述するように熱交換器20が配置され、 供給ライン13ａと反対側の槽壁には溢流堰26を設けて排出ライン15を連ねる。ま た槽の底部にはドレン弁16を介してタンク11へのリタ―ンライン17が設けてある 。なお、図中、18は吐出弁、19は洗浄弁である。 FIG. 1 is a plan view of equipment using a heat exchanger utilizing exhaust heat, FIG. 2 is a plan view of the same heat exchanger as above, and FIG. The scrubber water (warm water 65 ° C, including 5 μm dust) from the flue gas treatment tower enters the tank 11 from the line 10 and is pumped up by the scrubber water supply pumps 12a and 12b to supply the scrubber water supply line 13a and the cleaning line 13b. Sent to the drainage tank 14. A heat exchanger 20 is arranged in the drain tank 14 as described later with reference to FIG. 2 and the like, and an overflow weir 26 is provided on the tank wall on the side opposite to the supply line 13a to connect the discharge line 15. A return line 17 to the tank 11 is provided at the bottom of the tank via a drain valve 16. In the figure, 18 is a discharge valve and 19 is a washing valve.
【０００７】 熱交換器20は、図２ないし図５に示すように、コンクリ―ト製排水槽14内の長 手方向に平行な複数枚（図では約70mm間隔で10枚）の熱交換用パネル21を埋設し 、平面からみて排水槽14の両端の千鳥状位置に垂直方向に延びる第１のバッフル 22と、第１のバッフル22を取付けたパネルの上方に延びる第２のバッフル23と を設ける。これらのパネル群およびバッフルにより、スクラバ水流入口24から流 出口25に向って槽内のスクラバ水を屈折させながら流す排水流路Ａ，Ｂ，Ｃ，Ｄ ，Ｅが形成され、流出口25の槽壁には溢流堰26が設けられている（図11）。排水 流路Ｄ，Ｅを形成するパネル21の一端には、第１の上部ヘッダ―27を取付けて循 環水（上水）流入口28を設け、排水流路Ａ，Ｂ，Ｃを形成するパネル21の一端に は第２の上部ヘッダ―29を取付けて循環水流出口30を設ける。更に各パネル21の 下端には共通に下部ヘッダ―31を取付ける（図12）。As shown in FIGS. 2 to 5, the heat exchanger 20 is for heat exchange of a plurality of sheets (10 sheets at intervals of about 70 mm in the figure) parallel to the longitudinal direction in the concrete drain tank 14. A first baffle 22 is embedded in which the panel 21 is buried, and extends vertically in a zigzag position at both ends of the drainage tank 14 when viewed from the top, and a second baffle 23 extending above the panel on which the first baffle 22 is attached. Set up. These panel groups and baffles form drainage flow paths A, B, C, D, and E that flow the scrubber water in the tank from the scrubber water inlet 24 toward the outlet 25 while refracting the scrubber water. An overflow weir 26 is provided on the wall (Fig. 11). The first upper header 27 is attached to one end of the panel 21 forming the drainage flow passages D and E, and the circulating water (clean water) inlet 28 is provided to form the drainage flow passages A, B and C. A second upper header 29 is attached to one end of the panel 21 to provide a circulating water outlet 30. In addition, a lower header 31 is commonly attached to the lower end of each panel 21 (Fig. 12).
【０００８】 洗浄ライン13ｂは、排水槽14の近くで２つに分岐され槽上面で分岐路32と直交 する多数の枝管33を設け、更に、各枝管33に多数の垂直パイプ34を直下させ、そ の先端に洗浄水噴射ノズル35，36を取付ける。ノズル35，36からの噴射水は各パ ネル21の伝熱面に向けて噴射され伝熱面に付着するダストを洗い流す。除去され たダストは槽底に沈下し、スラッジ流出溝38より槽内の一方に集めて取除くもの である（図３，４，５）。The washing line 13b is provided with a large number of branch pipes 33 which are branched into two near the drainage tank 14 and which are orthogonal to the branch passages 32 on the upper surface of the tank, and a large number of vertical pipes 34 are provided directly below each branch pipe 33. Then, attach the cleaning water jet nozzles 35 and 36 to the tip. The water sprayed from the nozzles 35 and 36 is sprayed toward the heat transfer surface of each panel 21 to wash away dust adhering to the heat transfer surface. The removed dust sinks to the bottom of the tank and is collected and removed from the sludge outflow groove 38 in one side of the tank (Figs. 3, 4, 5).
【０００９】 図８はパネル21の拡大正面図を示す。パネル21は、２枚のプレ―トを合せ、か つ長手方向千鳥状に３条の溶接部40を設けて、内部に流入口41から出口42に向う 屈折流路43を形成させる。図９は第８のＩＸ−ＩＸ線における断面図、図10は同 じくＸ−Ｘ線における断面図である。流路43は、例えば幅約10mm、高さ175mm で 流路断面積を 0.001ｍ2 としたとき、パネル１枚当りの流量は40〜60ｌ/minであ る。FIG. 8 shows an enlarged front view of the panel 21. The panel 21 is formed by combining two plates and forming three welded portions 40 in a zigzag pattern in the longitudinal direction to form a refraction flow path 43 from the inlet 41 to the outlet 42 inside. 9 is a sectional view taken along line IX-IX, and FIG. 10 is a sectional view taken along line XX. The flow channel 43 has a width of about 10 mm and a height of 175 mm and a flow channel cross-sectional area of 0.001 m 2 , the flow rate per panel is 40 to 60 l / min.
【００１０】 次に洗浄ノズルについて述べる。 前述のように図２〜５に示したように排水槽14の排水流路Ａ〜Ｅに多数の拡角 フラップ撒水型の洗浄用ノズル35，36が設けられている。ノズル35は各排水流路 の中程の深さに直向きに配置され、またノズル36は各排水流路の上流側における 垂直管34の下端上向きに取付けられている。ノズル35は図６に平面を示すように 垂直管34の先端ヘッド44の左右に取付けられ、パネル伝熱面に対し僅かな角度θ （＝５°〜６°）をもって流れ方向に傾けられる。各ノズル35はノズル長手方向 に細孔46をもつ本体45と、本体45の下側流に向って切落した湾曲切落し部47とを 有し、かつノズル本体45の端面には細孔46の開口端部で形成される第１のノズル 孔（オリフィス）48があり、湾曲切落部47には細孔46の途中をエグって形成され た第２のノズル孔（オリフィス）49あけられている。枝管34に供給された洗浄水 は第１，第２のノズル孔48，49から図６の矢印の方向に噴出される。 図７は、枝管34の下端に上向きに取付けられたノズル36の正面図で、先端ヘッ ド50の左右に僅かな角度（例えば５°〜６°）で上向きに取付けられている。ノ ズル36の本体51は、図６に示すノズル35と同じように、細孔52の先端に第１のノ ズル孔（オリフィス）54があり、湾曲切落部53に第２のノズル孔（オリフィス） 55が形成され、図７中矢印で示すように流路内の斜上向きに洗浄水が噴出される 。これらのノズル35，36からの洗浄水噴射によって、パネル21の表面に付着する スラッジが吹飛ばされ、除去される。 ノズルの取付角度は、上記のようにパネル伝熱面に対し５°〜６°で、先端と 伝熱面とは３mm程度あけてある。オリフィス径３mm、排水角度 130°で、洗浄水 をノズル１個当り 5.5ｌ/min、５〜15分間、噴射する。洗浄効果が顕著に現われ る圧力は 0.8〜 1.2Kg/cm 2 Ｇで、１日３回、５〜12時間おきに洗浄することが 好ましい。Next, the cleaning nozzle will be described. As described above, as shown in FIGS. 2 to 5, the drainage channels A to E of the drainage tank 14 are provided with a large number of wide-angle flap spraying type cleaning nozzles 35 and 36. The nozzles 35 are arranged directly at the middle depth of each drainage channel, and the nozzles 36 are mounted above the lower end of the vertical pipe 34 on the upstream side of each drainage channel. The nozzles 35 are attached to the left and right of the tip head 44 of the vertical tube 34 as shown in the plan view of FIG. 6, and are inclined in the flow direction at a slight angle θ (= 5 ° to 6 °) with respect to the heat transfer surface of the panel. Each nozzle 35 has a main body 45 having a pore 46 in the longitudinal direction of the nozzle, and a curved cutout portion 47 cut off toward the lower flow of the main body 45, and the end face of the nozzle body 45 has a pore 46. There is a first nozzle hole (orifice) 48 formed at the open end of the, and a second nozzle hole (orifice) 49 is formed in the curved cut-off portion 47 by energizing the middle of the small hole 46. ing. The cleaning water supplied to the branch pipe 34 is jetted from the first and second nozzle holes 48, 49 in the direction of the arrow in FIG. FIG. 7 is a front view of the nozzle 36 attached upward to the lower end of the branch pipe 34, and is attached upward to the left and right of the tip head 50 at a slight angle (for example, 5 ° to 6 °). Like the nozzle 35 shown in FIG. 6, the main body 51 of the nozzle 36 has a first nozzle hole (orifice) 54 at the tip of the pore 52, and a second nozzle hole (orifice) at the curved cutout portion 53. An orifice) 55 is formed, and washing water is jetted obliquely upward in the flow path as shown by the arrow in FIG. By spraying cleaning water from these nozzles 35 and 36, sludge adhering to the surface of the panel 21 is blown off and removed. As described above, the mounting angle of the nozzle is 5 ° to 6 ° with respect to the heat transfer surface of the panel, and the tip and the heat transfer surface are separated by about 3 mm. The cleaning water is sprayed at 5.5 l / min per nozzle for 5 to 15 minutes with an orifice diameter of 3 mm and a drain angle of 130 °. The pressure at which the cleaning effect remarkably appears is 0.8 to 1.2 kg / cm 2 G, and it is preferable to perform cleaning three times a day and every 5 to 12 hours.
【００１１】[0011]
上述のように、排水槽内に埋設された熱交換用パネルの伝熱面に対し、スクラ バ水の１部を洗浄用ノズルより噴射させるので、洗浄水におけるスクラバ排水の 温度を下げることなく伝熱面に付着するダストを効率的に除去できる。しかも、 スクラバの運転を中止したり、熱交換器を分解することなく、ダスト除去を行う ことができる。 As described above, since a part of the scrubber water is sprayed from the cleaning nozzle onto the heat transfer surface of the heat exchange panel buried in the drain tank, the scrubber waste water in the cleaning water is transferred without lowering the temperature. Dust adhering to the hot surface can be efficiently removed. Moreover, the dust can be removed without stopping the operation of the scrubber and disassembling the heat exchanger.
【図１】本考案排熱利用熱交換器を用いる設備の配置図
である。FIG. 1 is a layout view of equipment using a heat exchanger utilizing exhaust heat of the present invention.
【図２】本考案排熱利用熱交換器の平面図である。FIG. 2 is a plan view of a heat exchanger using exhaust heat according to the present invention.
【図３】図２のＩＩＩ−ＩＩＩ線における縦断面図であ
る。FIG. 3 is a vertical cross-sectional view taken along the line III-III in FIG.
【図４】図２のＩＶ−ＩＶ線における縦断面図である。FIG. 4 is a vertical sectional view taken along line IV-IV in FIG.
【図５】図２のＶ−Ｖ線における横断面図である。5 is a cross-sectional view taken along the line VV of FIG.
【図６】流路中段に配置した洗浄用ノズルの拡大断面図
である。FIG. 6 is an enlarged cross-sectional view of a cleaning nozzle arranged in the middle stage of the flow path.
【図７】流路の先端部分に配置した洗浄用ノズルの拡大
正面図である。FIG. 7 is an enlarged front view of the cleaning nozzle arranged at the tip of the flow path.
【図８】熱交換用パネルの拡大正面図である。FIG. 8 is an enlarged front view of the heat exchange panel.
【図９】図８のＩＸ−ＩＸ線における断面図である。9 is a sectional view taken along line IX-IX in FIG.
【図10】図８のＸ−Ｘ線における断面図である。10 is a cross-sectional view taken along line XX of FIG.
【図11】熱交換器の屈折流路を示す平面図である。FIG. 11 is a plan view showing a refraction channel of the heat exchanger.
【図12】熱交換用パネルと循環水流れを示す分解斜視図
である。FIG. 12 is an exploded perspective view showing a heat exchange panel and a circulating water flow.
10 排水ライン 11 タンク 12ａ スクラバ水給水ポンプ 12ｂ 洗浄水給水ポンプ 13ａ スクラバ水供給ライン 13ｂ 洗浄ライン 14 排水槽 20 熱交換器 21 熱交換用パネル 22，23 バッフル 24 排水流入口 25 排水流出口 27，29，31 ヘッダ― 32 分岐管 33 枝管 34 垂直パイプ 35，36 洗浄用ノズル 45，51 ノズル本体 46，52 細孔 47，53 湾曲切落部 48，49，54，55 オリフィス 10 Drain line 11 Tank 12a Scrubber water feed pump 12b Wash water feed pump 13a Scrubber water supply line 13b Wash line 14 Drain tank 20 Heat exchanger 21 Heat exchange panel 22,23 Baffle 24 Drain inlet 25 Drain outlet 27,29 , 31 Header ― 32 Branch pipe 33 Branch pipe 34 Vertical pipe 35, 36 Cleaning nozzle 45, 51 Nozzle body 46, 52 Pore 47, 53 Curved cutout 48, 49, 54, 55 Orifice
Claims (2)
内に、焼却炉用排煙処理塔の温排水を導いて温水を取出
す装置において、上記熱交換器によって形成される排水
流路に、上記温排水の１部をプレ―ト型熱交換器の伝熱
面に噴射する多数の洗浄用ノズルを設けたことを特徴と
する排熱利用熱交換器。1. A drainage stream formed by the heat exchanger in a device for guiding hot water from a smoke treatment tower for an incinerator to take out hot water into a tank in which a large number of plate heat exchangers are embedded. A heat exchanger utilizing exhaust heat, characterized in that a plurality of cleaning nozzles for injecting a part of the warm waste water onto a heat transfer surface of a plate type heat exchanger are provided in the passage.
伝熱面に対し僅かに傾斜して取付けられたノズル本体
と、ノズル本体の先端面に開口する第１のノズル孔と、
排水流路の下流に向うノズル本体側面に形成させた湾曲
切落部と、湾曲切落部に設けた第２のノズル孔とを有す
る拡角フラット撒水型ノズルである請求項１記載の排熱
利用熱交換器。2. The cleaning nozzle comprises a nozzle body mounted at a slight inclination with respect to the heat transfer surface of the plate heat exchanger, and a first nozzle hole opening at the tip surface of the nozzle body.
The wide angle flat water spray nozzle having a curved cutout portion formed on the side surface of the nozzle body facing the downstream of the drainage flow channel and a second nozzle hole provided in the curved cutout portion. Use heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991006083U JP2567700Y2 (en) | 1991-01-23 | 1991-01-23 | Waste heat heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991006083U JP2567700Y2 (en) | 1991-01-23 | 1991-01-23 | Waste heat heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH066992U true JPH066992U (en) | 1994-01-28 |
| JP2567700Y2 JP2567700Y2 (en) | 1998-04-02 |
Family
ID=11628655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991006083U Expired - Lifetime JP2567700Y2 (en) | 1991-01-23 | 1991-01-23 | Waste heat heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567700Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5485548U (en) * | 1977-11-30 | 1979-06-16 | ||
| JPS57112697A (en) * | 1980-12-29 | 1982-07-13 | Mitsubishi Metal Corp | Method of removing scale on surface of heat-exchange tube |
-
1991
- 1991-01-23 JP JP1991006083U patent/JP2567700Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5485548U (en) * | 1977-11-30 | 1979-06-16 | ||
| JPS57112697A (en) * | 1980-12-29 | 1982-07-13 | Mitsubishi Metal Corp | Method of removing scale on surface of heat-exchange tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2567700Y2 (en) | 1998-04-02 |
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| Date | Code | Title | Description |
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| R250 | Receipt of annual fees |
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