JP3076146U - Vacuum sludge drying equipment - Google Patents
Vacuum sludge drying equipmentInfo
- Publication number
- JP3076146U JP3076146U JP2000006200U JP2000006200U JP3076146U JP 3076146 U JP3076146 U JP 3076146U JP 2000006200 U JP2000006200 U JP 2000006200U JP 2000006200 U JP2000006200 U JP 2000006200U JP 3076146 U JP3076146 U JP 3076146U
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- Prior art keywords
- vacuum
- sludge
- drying
- pipe
- water vapor
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- Treatment Of Sludge (AREA)
Abstract
(57)【要約】
【課題】 汚泥中の水分を真空下・低温含有有効物質の
分解なしに高効率で乾燥する装置を提供する。
【解決手段】 スティーム加熱用ジャケット構造を有す
る真空乾燥容器の一端に、送泥管により汚泥を送り込
み、送り込まれた汚泥を該真空乾燥装置に配設した攪拌
兼移送装置により他端に移送しながら汚泥を加温し、該
真空乾燥容器に設けた補助排気装置及び真空ポンプに繋
がる排気管より、真空下で蒸発する水蒸気を吸引排気
し、該発生水蒸気をコンデンサーに導き凝縮水として凝
縮・分離し、レシバータンクに貯液させ、真空容器内の
乾燥された汚泥を該真空容器の他端に設けた排泥管から
排泥用回転弁を経て排出する装置を構成する。
(57) [Summary] [PROBLEMS] To provide an apparatus for drying moisture in sludge with high efficiency under vacuum and without decomposing low-temperature-containing effective substances. SOLUTION: Sludge is sent to one end of a vacuum drying container having a steam heating jacket structure by a mud pipe, and the sent sludge is transferred to the other end by a stirring and transferring device provided in the vacuum drying device. The sludge is heated, water vapor evaporating under vacuum is suctioned and exhausted from an auxiliary exhaust device provided in the vacuum drying vessel and an exhaust pipe connected to a vacuum pump, and the generated water vapor is led to a condenser to be condensed and separated as condensed water. And a device for storing dried sludge in a vacuum container through a drainage pipe provided at the other end of the vacuum container through a drainage rotary valve.
Description
【０００１】[0001]
本考案は、汚泥中の水分を真空（減圧）下で乾燥する真空汚泥装置に関するも のである。 The present invention relates to a vacuum sludge apparatus for drying water in sludge under vacuum (reduced pressure).
【０００２】[0002]
汚泥中の９９％程度は水分のため、該汚泥を肥料等に再利用するにしても、破 棄或いは焼却するにしても、取り扱い容量を減少せしめることが必須であり、如 何に効率よく乾燥するか、或いは脱水するかが極めて重要な問題となる。 Since about 99% of the sludge is water, it is essential to reduce the handling capacity regardless of whether the sludge is reused as fertilizer or discarded or incinerated. Whether to do or dehydrate is a very important issue.
【０００３】 汚泥の脱水技術として最も普遍的な方法としては、遠心分離脱水法、真空フイ ルタ脱水法、フイルタプレス加圧脱水法、ベルトプレス脱水法の各方式が知られ ている。[0003] The most common methods for dewatering sludge include centrifugal dewatering, vacuum filter dewatering, filter press pressure dewatering, and belt press dewatering.
【０００４】 しかしながら、かかる脱水法では、脱水後のケーキの含水率が７０％以上あり 、破棄するにしても容量が大きく破棄スペースを大きく取り過ぎ、焼却処分にす るにしても余分な燃料を過大に要し、肥料として再利用するにも容積・重量とも 不必要に過大であり、乾燥し含水率は１〜５％以下にすることが望まれる。However, in such a dewatering method, the water content of the cake after dewatering is 70% or more, the capacity is large even when the cake is discarded, and a large space for discarding is taken. It is excessively necessary, and both the volume and weight are unnecessarily excessive for reuse as fertilizer, and it is desired that the material be dried to have a water content of 1 to 5% or less.
【０００５】 従来、かかる泥状物の乾燥には回転乾燥機、攪拌乾燥機、回転多段式乾燥機な どの乾燥機を用いる乾燥装置が知られており、かかる乾燥方式を連続して行いう る改良された装置・プロセスも知られている。Conventionally, drying apparatuses using a dryer such as a rotary dryer, a stirring dryer, and a rotary multistage dryer have been known for drying such a muddy material, and such a drying method is continuously performed. Improved equipment and processes are also known.
【０００６】 又、被乾燥物が熱分解や酸化劣化を受けやすい物質の場合、真空下で低温乾燥 を実施し得る乾燥機やプロセスも開発されている。[0006] Further, dryers and processes capable of performing low-temperature drying under vacuum have been developed when the material to be dried is a substance that is susceptible to thermal decomposition or oxidative degradation.
【０００７】[0007]
本考案は、加熱により酸化劣化・熱分解を受けやすい泥状物の酸化劣化・熱分 解を伴わず、肥料等に再利用時に品質低下を伴わずに再利用できる、含水率が１ 〜５％以下に迅速に連続乾燥できる真空汚泥装置を提供することを課題とするも のである。 The present invention provides a mud that is susceptible to oxidative deterioration and thermal decomposition due to heating without oxidative deterioration or thermal decomposition, and can be reused as fertilizers without deterioration in quality when reused. It is an object of the present invention to provide a vacuum sludge apparatus capable of rapidly and continuously drying to less than 10%.
【０００８】[0008]
本考案は課題解決の手段として、スティーム加熱用ジャケット構造を有する真 空乾燥容器の一端に、送泥管により汚泥を送り込み、送り込まれた汚泥を該真空 乾燥装置に配設した攪拌兼移送装置により他端に移送しながら汚泥を加温し、該 真空乾燥容器に設けた補助排気装置及び真空ポンプに繋がる排気管より真空下で 蒸発する水蒸気を吸引排気し、該発生水蒸気を水冷式コンデンサーに導き凝縮水 として凝縮・分離し、レシバータンクに貯液させ、真空容器内の乾燥された汚泥 を該真空容器の他端に設けた排泥管から排出する構造の真空汚泥乾燥装置を構成 するものである。 In the present invention, as a means for solving the problem, sludge is fed to one end of a vacuum drying container having a steam heating jacket structure by a mud pipe, and the fed sludge is stirred and transferred by a stirring and transferring device provided in the vacuum drying device. The sludge is heated while being transferred to the other end, and the water vapor that evaporates under vacuum is suctioned and exhausted from the auxiliary exhaust device provided in the vacuum drying vessel and the exhaust pipe connected to the vacuum pump, and the generated steam is guided to the water-cooled condenser. Condensed and separated as condensed water, stored in a receiver tank, and constituted a vacuum sludge drying device with a structure in which dried sludge in a vacuum vessel was discharged from a drain pipe provided at the other end of the vacuum vessel. is there.
【０００９】 又、被乾燥物の汚泥を乾燥装置のスティーム加熱用ジャケット構造を有する真 空乾燥容器に供給し、該装置の加熱用ジャケットに飽和水蒸気を供給し該真空乾 燥容器を加温し、真空ポンプ及び補助減圧装置（スティームエジェクターなど） を用い、真空乾燥容器内を操業条件４０〜２５０ｍｍＨｇの減圧となし操業する ことにより、汚泥中の有効物質の分解・酸化劣化を伴わず、品位の低下を伴わず に高効率・迅速に含有水分率１〜５％に乾燥し得るプロセスの確立に成功したの である。In addition, the sludge to be dried is supplied to a vacuum drying vessel having a steam heating jacket structure of a drying apparatus, and saturated steam is supplied to the heating jacket of the drying apparatus to heat the vacuum drying vessel. Using a vacuum pump and an auxiliary decompression device (such as a steam ejector), the vacuum drying vessel is operated at a reduced pressure of 40 to 250 mmHg without decomposing and oxidizing deterioration of the effective substances in the sludge. It succeeded in establishing a process capable of drying efficiently and quickly to a moisture content of 1 to 5% without a decrease.
【００１０】[0010]
以下、本考案の具体的設備仕様と実施形態を図面に基づいて詳しく説明する。 図１は本考案の真空汚泥乾燥装置の一実施形態例を示す汚泥を連続式に処理可能 な連続式真空汚泥乾燥装置の代表例の基本的構成概要図である。 Hereinafter, specific equipment specifications and embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing a basic configuration of a typical example of a continuous vacuum sludge drying apparatus capable of continuously treating sludge, showing an embodiment of the vacuum sludge drying apparatus of the present invention.
【００１１】 図１において本装置は、汚泥１を真空下で攪拌しながら前方に移送し乾燥する 二重底の横置き円筒真空乾燥容器２を備えている。汚泥１は凝縮沈殿後もしくは 凝集沈殿前のものである。In FIG. 1, the present apparatus is provided with a double-bottom, horizontal cylindrical vacuum drying vessel 2 for transferring and drying sludge 1 forward while stirring under vacuum. Sludge 1 is after condensation or sedimentation.
【００１２】 該横置き円筒真空容器２の外周壁はジャケット構造となっており、このジャケ ットにジャケット外側部に穿孔し連結した加熱用水蒸気供給管３より加熱用水蒸 気１０１を供給し、同じくジャケット外側部に穿孔し連結した加熱用水蒸気ドレ ーン排出管４より生じたドレーンを排出する加熱機構にて所定温度に加熱・加温 できる構造となっている。The outer peripheral wall of the horizontal cylindrical vacuum vessel 2 has a jacket structure, and heating water vapor 101 is supplied to the jacket from a heating water vapor supply pipe 3 pierced and connected to the outside of the jacket. Similarly, a heating mechanism for discharging a drain generated from a heating steam drain discharge pipe 4 pierced and connected to the outer side of the jacket can be heated and heated to a predetermined temperature.
【００１３】 該横置き円筒真空乾燥容器２は、側面部に汚泥槽７から汚泥供給ポンプ８を経 て、連続式真空汚泥乾燥装置に汚泥を送入する送泥管５が連結されている。なお 、６はスチームトラップであり、スチームドレンが排出される。The horizontal cylindrical vacuum drying vessel 2 has a side surface connected to a sludge pipe 5 for feeding sludge from a sludge tank 7 through a sludge supply pump 8 to a continuous vacuum sludge drying apparatus. Reference numeral 6 denotes a steam trap from which steam drain is discharged.
【００１４】 横置き円筒真空乾燥容器２は、加温と共に該装置内を所定の真空度にするため 、排気管１２にて補助排気装置（スティームエジェクター）１０へと、又発生水 蒸気排出管１１にて真空ポンプ９と、ジャケットを貫通して配置・接続され、円 筒真空乾燥容器２内を所定の真空状態に保てる構造となっている。The horizontal cylindrical vacuum drying vessel 2 is heated by an exhaust pipe 12 to an auxiliary exhaust device (steam ejector) 10 and heated water vapor exhaust pipe 11 so that the inside of the apparatus is heated to a predetermined degree of vacuum. The vacuum drying unit 2 is arranged and connected to the vacuum pump 9 through the jacket so that the inside of the cylindrical vacuum drying container 2 can be maintained in a predetermined vacuum state.
【００１５】 又、発生水蒸気排出管１１は、汚泥の真空下における加温により発生する水蒸 気を凝縮させ分離する水冷式コンデンサー１３、及び生じた凝縮水を貯めるレシ ーバータンク１６に接続されている。コンデンサー１３には入口１５から、冷却 水１０２が送り込まれる。従って、コンデンサー１３で冷却水１０２が熱交換さ れ冷却水１０８は出口９から排出される。２０は大気の開放弁である。コンデン サー１３は、逆止弁２１、サイトグラス２２、エゼクター１０、バッファタンク １６を経由して、真空ポンプ９に連結されている。Further, the generated steam discharge pipe 11 is connected to a water-cooled condenser 13 for condensing and separating water vapor generated by heating the sludge under vacuum, and a receiver tank 16 for storing the generated condensed water. . Cooling water 102 is fed into the condenser 13 from the inlet 15. Therefore, the cooling water 102 undergoes heat exchange with the condenser 13, and the cooling water 108 is discharged from the outlet 9. Reference numeral 20 denotes an air release valve. The condenser 13 is connected to the vacuum pump 9 via a check valve 21, a sight glass 22, an ejector 10, and a buffer tank 16.
【００１６】 １９は、バッファタンク１６からのエア抜きであり、２５は排水である。そし て、エゼクター１０に入る冷却水入口２６と、真空ポンプ９から出る冷却水出口 ２７との間には、凝縮水をもう１度冷却する熱交換器２８が設けられている。Reference numeral 19 denotes air bleeding from the buffer tank 16, and reference numeral 25 denotes drainage. Further, between the cooling water inlet 26 entering the ejector 10 and the cooling water outlet 27 exiting from the vacuum pump 9, a heat exchanger 28 for cooling the condensed water once more is provided.
【００１７】 更に、横置き円筒真空乾燥容器２には、該容器右端側面部の送泥管５より供給 される汚泥を、該横置き円筒真空乾燥容器２左側に攪拌しながら移送し、加温・ 真空乾燥するための攪拌羽根を設けた攪拌・移送装置１８が、横置き円筒真空乾 燥容器２の中心線上に回転軸を合致させ設置され、正逆回転可能の攪拌・移送装 置駆動用モーター１７にて駆動され、横置き円筒真空乾燥容器２内に供給された 汚泥を攪拌しながら所定速度で左側に移送する構造となっている。移送速度が早 すぎる際には、逆回転させ攪拌効果を向上できるような制御系を設定している。 更に、該円筒真空乾燥容器該２の左端側面部には、乾燥された乾燥汚泥を排出 する汚泥排出管６が配置・接続されている。Furthermore, the sludge supplied from the mud pipe 5 on the right side of the horizontal cylindrical vacuum drying vessel 2 is transferred to the horizontal cylindrical vacuum drying vessel 2 while stirring the sludge to the left side of the horizontal cylindrical vacuum drying vessel 2 and heated. A stirrer / transfer device 18 provided with stirring blades for vacuum drying is mounted on the center line of the horizontal cylindrical vacuum drying container 2 with its rotation axis aligned, and is used to drive a stirrer / transfer device that can rotate forward and reverse. The sludge driven by the motor 17 and supplied into the horizontal cylindrical vacuum drying vessel 2 is transported to the left at a predetermined speed while stirring. If the transfer speed is too fast, a control system has been set up so that the stirring effect can be improved by reverse rotation. Further, a sludge discharge pipe 6 for discharging dried dry sludge is arranged and connected to the left end side surface of the cylindrical vacuum drying container 2.
【００１８】 該汚泥乾燥装置は、上記構成の設備を用い加熱用ジャケットに飽和水蒸気を供 給し、横置き円筒真空乾燥容器を加熱し所望の真空度（４０〜２５０ｍｍＨｇ） に減圧して操業することにより、汚泥中の有効物質の分解・酸化劣化及び、品位 の低下を伴わずに高効率・迅速に含有水分率５％以下の乾燥汚泥を得ることがで きる。The sludge drying apparatus operates by supplying saturated steam to the heating jacket using the equipment having the above configuration, heating the horizontal cylindrical vacuum drying vessel, and reducing the pressure to a desired degree of vacuum (40 to 250 mmHg). As a result, it is possible to obtain dried sludge with a moisture content of 5% or less efficiently and promptly without decomposing and oxidizing and deteriorating the effective substance in the sludge and lowering the grade.
【００１９】 なお、この際、円筒真空乾燥容器該２中の汚泥は、汚泥供給部に近い含有水分 率の高い領域では、攪拌が充分行われておりさえすれば、加熱用ジャケット温度 は飽和水蒸気を供給して加熱しているため１００℃になっているので、ジャケッ ト温度近くまで上がることはない。したがって、操業圧（真空度）条件に匹敵す る水の沸点温度にしかならず低温で乾燥が進行し、乾燥が進行し含有水分率が低 くなった乾燥機後部では、温度上昇可能状態にあるが、乾燥汚泥自体の含水率低 下による熱伝達率低下と、雰囲気の（真空状態）熱伝達低下のため、ジャケット 壁温近くの高温域にまで温度が上昇することはなく乾燥が行うことができる。At this time, the sludge in the cylindrical vacuum drying container 2 is heated to a saturated steam temperature in a region having a high water content near the sludge supply section as long as stirring is sufficiently performed. Since the temperature is 100 ° C. due to the supply and heating, the temperature does not rise to near the jacket temperature. Therefore, drying proceeds at a low temperature as well as the boiling point of water comparable to the operating pressure (vacuum degree) conditions. At the rear of the dryer where drying has progressed and the moisture content has decreased, the temperature can be increased. Since the heat transfer rate decreases due to a decrease in the moisture content of the dried sludge itself and the heat transfer in the atmosphere (in a vacuum state), the temperature does not rise to a high temperature area near the jacket wall temperature, and drying can be performed. .
【００２０】 本考案の真空汚泥乾燥装置において、汚泥より発生・除去される水蒸気を凝縮 ・捕集・除去するための捕集効率と、捕集のために必要なコンデンサー冷却水の 水温の関係より、好ましい操業条件は真空度をあまり低くせず、乾燥が５０〜６ ０℃で進行できるような操業条件の選定下（８０〜１５０ｍｍＨｇ）で行うこと が望ましい。In the vacuum sludge drying apparatus of the present invention, from the relationship between the collection efficiency for condensing, collecting, and removing steam generated and removed from the sludge, and the temperature of the condenser cooling water required for collection. It is preferable to perform the operation under a condition (80 to 150 mmHg) that does not reduce the degree of vacuum so much that the drying can proceed at 50 to 60 ° C.
【００２１】[0021]
本考案の汚泥乾燥装置によれば、連続的に真空下で加温・攪拌しながら汚泥の 乾燥を実施できるため、４０〜６０℃の低温下で乾燥作業が進行するので、汚泥 含有有効成分が熱分解・酸化劣化することなく、肥料などへの再利用に極めて有 効である。 According to the sludge drying apparatus of the present invention, the sludge can be dried while continuously heating and stirring under vacuum, and the drying operation proceeds at a low temperature of 40 to 60 ° C. It is extremely effective for reuse in fertilizers without thermal decomposition and oxidative degradation.
【００２２】 また、減圧・低温下で乾燥操業が実施されるためエネルギー効率が高く、省エ ネ効果が大きい。Further, since the drying operation is performed under reduced pressure and low temperature, the energy efficiency is high and the energy saving effect is large.
【図１】本考案の真空汚泥乾燥装置の概要を示すフロー
シートである。FIG. 1 is a flow sheet showing an outline of a vacuum sludge drying apparatus of the present invention.
１ 汚泥 ２ 横置き円筒真空乾燥容器 ３ 加熱用水蒸気供給管 ４ 加熱用蒸気ドレーン排出弁とドレーン排出管 ５ 送泥管 ６ 汚泥排出管 ７ 汚泥ホッパー ８ 汚泥供給ポンプ ９ 真空ポンプ １０ 補助減圧器（スティームエジェクター） １１ 発生水蒸気排出及び真空ポンプに通じる吸引管 １２ 補助減圧器に通じる排気管 １３ 水冷式コンデンサー １４ コンデンサー冷却水供給管 １５ コンデンサー冷却水排水管 １６ レシーバータンク １７ 正逆回転可能の攪拌・移送装置駆動用モーター １８ 攪拌羽のついた攪拌・移送装置 １９ 大気開放弁 Reference Signs List 1 sludge 2 horizontal cylindrical vacuum drying vessel 3 heating steam supply pipe 4 heating steam drain discharge valve and drain discharge pipe 5 sludge pipe 6 sludge discharge pipe 7 sludge hopper 8 sludge supply pump 9 vacuum pump 10 auxiliary pressure reducer (steam) Ejector) 11 Vacuum pipe for discharging generated steam and connecting to vacuum pump 12 Exhaust pipe connecting to auxiliary pressure reducer 13 Water-cooled condenser 14 Condenser cooling water supply pipe 15 Condenser cooling water drain pipe 16 Receiver tank 17 Forward / reverse rotatable stirring / transfer device Driving motor 18 Stirring / transfer device with stirring blade 19 Atmospheric release valve
Claims (2)
内部に撹拌兼移送装置を備えた真空乾燥容器の一端に汚
泥を送り込む送泥管を設け、前記真空乾燥容器の他端に
汚泥排出管と補助排気装置及び真空ポンプに繋がる排気
管とを設けるとともに、該排気管に真空下で蒸発する水
蒸気を吸引排気し、該発生水蒸気を凝縮水として凝縮・
分離しするコンデンサーを接続することを特徴とする真
空汚泥乾燥装置。1. A sludge pipe for feeding sludge is provided at one end of a vacuum drying vessel having a steam heating jacket structure and provided with a stirring and transfer device therein, and a sludge discharge pipe and an auxiliary at the other end of the vacuum drying vessel. In addition to providing an exhaust device and an exhaust pipe connected to a vacuum pump, the exhaust pipe sucks and exhausts water vapor that evaporates under vacuum, and condenses the generated water vapor as condensed water.
A vacuum sludge drying device characterized by connecting a condenser to be separated.
空）下で乾燥する請求項１に記載の真空汚泥乾燥装置。2. The vacuum sludge drying apparatus according to claim 1, wherein the drying is performed under reduced pressure (vacuum) of 40 to 250 mmHg while heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000006200U JP3076146U (en) | 2000-08-29 | 2000-08-29 | Vacuum sludge drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000006200U JP3076146U (en) | 2000-08-29 | 2000-08-29 | Vacuum sludge drying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3076146U true JP3076146U (en) | 2001-03-30 |
Family
ID=43209220
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|---|---|---|---|
| JP2000006200U Expired - Lifetime JP3076146U (en) | 2000-08-29 | 2000-08-29 | Vacuum sludge drying equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004313918A (en) * | 2003-04-15 | 2004-11-11 | Daiwa Kagaku Kogyo Kk | Vacuum sludge drying method and apparatus therefor |
| JP2015188816A (en) * | 2014-03-28 | 2015-11-02 | 株式会社クボタ | absorption dehydration apparatus and method |
| JP5865465B1 (en) * | 2014-11-13 | 2016-02-17 | 大旺新洋株式会社 | Sludge drying method and apparatus |
| CN116553802A (en) * | 2023-07-07 | 2023-08-08 | 北京高能时代环境技术股份有限公司 | Efficient continuous batch type sludge drying device |
-
2000
- 2000-08-29 JP JP2000006200U patent/JP3076146U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004313918A (en) * | 2003-04-15 | 2004-11-11 | Daiwa Kagaku Kogyo Kk | Vacuum sludge drying method and apparatus therefor |
| JP2015188816A (en) * | 2014-03-28 | 2015-11-02 | 株式会社クボタ | absorption dehydration apparatus and method |
| JP5865465B1 (en) * | 2014-11-13 | 2016-02-17 | 大旺新洋株式会社 | Sludge drying method and apparatus |
| CN116553802A (en) * | 2023-07-07 | 2023-08-08 | 北京高能时代环境技术股份有限公司 | Efficient continuous batch type sludge drying device |
| CN116553802B (en) * | 2023-07-07 | 2023-09-26 | 北京高能时代环境技术股份有限公司 | Efficient continuous batch type sludge drying device |
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