JP3071345B2 - Continuous sludge injection equipment - Google Patents
Continuous sludge injection equipmentInfo
- Publication number
- JP3071345B2 JP3071345B2 JP5196368A JP19636893A JP3071345B2 JP 3071345 B2 JP3071345 B2 JP 3071345B2 JP 5196368 A JP5196368 A JP 5196368A JP 19636893 A JP19636893 A JP 19636893A JP 3071345 B2 JP3071345 B2 JP 3071345B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- hydraulic fluid
- piston
- press
- height
- 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 - Fee Related
Links
Landscapes
- Treatment Of Sludge (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、汚泥を高圧の受け入れ
機器へ圧入する装置に関し、特にある程度脱水された汚
泥を機器に圧入する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for injecting sludge into a high-pressure receiving apparatus, and more particularly to an apparatus for injecting sludge which has been dehydrated to some extent into the apparatus.
【０００２】[0002]
【従来の技術】本発明者らは、既に特開平５−１１１６
９５号において、汚泥を高圧の受け入れ機器である容器
に圧入する汚泥圧入装置を開発している。この先行発明
では、汚泥貯槽、汚泥供給ポンプ、第１の開閉弁、第２
の開閉弁及び汚泥の圧入を受ける機器を直列に配管接続
し、ピストンを内蔵するシリンダのピストン下部側を前
記第１及び第２の開閉弁間に配管接続し、さらに、前記
シリンダのピストン上部側を並列に配設した高圧ポンプ
及び第３の開閉弁を介して液面計を有する作動液槽に配
管接続してなり、前記汚泥供給及び高圧ポンプの駆動操
作と前記第１乃至第３の開閉弁の開閉操作とにより前記
機器への汚泥圧入を可能にしている。2. Description of the Related Art The present inventors have already disclosed in Japanese Patent Laid-Open No. 5-1116.
No. 95 has developed a sludge press-in device that presses sludge into a container that is a high-pressure receiving device. In this prior invention, a sludge storage tank, a sludge supply pump, a first on-off valve, a second
And a device for receiving press-in of sludge are connected in series with a pipe, a lower piston side of a cylinder having a built-in piston is connected between the first and second on-off valves, and an upper piston side of the cylinder is further connected. Are connected to a working fluid tank having a liquid level gauge via a high-pressure pump and a third opening / closing valve arranged in parallel, so that the sludge supply and the driving operation of the high-pressure pump and the first to third opening / closing operations are performed. Sludge injection into the device is enabled by opening and closing the valve.
【０００３】前記先行発明の具体的構成を図２について
説明し、また該先行発明が効果的に適用される汚泥油化
装置のフローを図３について説明する。FIG. 2 shows a specific configuration of the above-mentioned prior invention, and FIG. 3 shows a flow of a sludge-oiling apparatus to which the prior invention is effectively applied.
【０００４】先ず図２について説明すると、汚泥Ｍの汚
泥貯槽１、汚泥供給ポンプ２、第１の開閉弁３、第２の
開閉弁４は、汚泥供給配管１３及び汚泥圧入配管１５に
より直列に接続されている。ピストン７を内蔵するシリ
ンダ６のピストン下部側は、弁３と弁４との間において
汚泥供給配管に接続されている。シリンダ６のピストン
上部側、高圧ポンプ９、作動液槽１０は、作動液供給配
管１４により直列に接続されており、該高圧ポンプ９に
は第３の開閉弁８が並列に接続されている。作動液槽１
０には、該液槽内において所定の第１の高さにある作動
液面を検知する液面計１２、及び第１の高さより所定間
隔低い第２の高さの作動液面を検知する液面計１１が設
けられている。この液面計は、種々公知のものが使用可
能である。Referring first to FIG. 2, a sludge storage tank 1 for sludge M, a sludge supply pump 2, a first on-off valve 3, and a second on-off valve 4 are connected in series by a sludge supply pipe 13 and a sludge press-fitting pipe 15. Have been. The lower portion of the piston of the cylinder 6 containing the piston 7 is connected to a sludge supply pipe between the valve 3 and the valve 4. The upper side of the piston of the cylinder 6, the high-pressure pump 9, and the working fluid tank 10 are connected in series by a working-fluid supply pipe 14, and a third on-off valve 8 is connected to the high-pressure pump 9 in parallel. Hydraulic fluid tank 1
A value of 0 indicates a level gauge 12 for detecting a hydraulic fluid level at a predetermined first level in the liquid tank, and a level of hydraulic fluid at a second level lower than the first level by a predetermined interval. A liquid level gauge 11 is provided. Various known liquid level gauges can be used.
【０００５】上記構成において、シリンダ６内のピスト
ン７の上部側に作動液、例えば水を満たした状態で、弁
３、８を開き、汚泥供給ポンプ２を稼働し、汚泥貯槽１
中の脱水汚泥を汚泥供給配管１３を介してシリンダ６の
下部側に充填する。この充填に伴い、ピストン７が上昇
し、かつピストン７の上部側の作動液は、作動液供給配
管１４、弁８を介して作動液槽１０内に流入する。該作
動液槽１０内の作動液の液面は、ピストン下部側に供給
した汚泥の体積に応じて上昇するので、該液面が第１の
高さ即ち液面計１２に達した時点で、汚泥の供給を停止
する（以上、供給工程）。次いで弁３、８を閉じ、高圧
ポンプ９を稼働して、作動液槽１０内の作動液をシリン
ダ６内に圧入して、シリンダ６内の圧力を受け入れ機器
である容器５内の圧力と同等になるまで高める（以上、
加圧工程）。その後、弁４を開き、高圧ポンプ９から供
給される作動液でピストン７を介して、シリンダ６内の
汚泥を押し出す。この時、汚泥は、圧入配管１５、弁４
を介して容器５に圧入される。当該圧入に伴い作動液槽
内の液面は下降し、液面が第１の高さより所定間隔低い
第２の高さ即ち液面計１１に達した時点で、圧入を停止
する（以上、圧入工程）。圧入工程において、液面計１
１の高さから１２の高さまで、作動液槽１０からシリン
ダ６のピストン７上部側に供給される作動液の体積は、
ピストン７下部側から容器５に圧入される汚泥の体積に
略等しい。以上の供給、加圧及び圧入の各工程を順番に
繰り返すことにより、汚泥を容器５に連続的に圧入する
ことができる。[0005] In the above configuration, the valves 3 and 8 are opened while the upper portion of the piston 7 in the cylinder 6 is filled with a working fluid, for example, water, the sludge supply pump 2 is operated, and the sludge storage tank 1 is opened.
The dehydrated sludge in the inside is filled into the lower part of the cylinder 6 through the sludge supply pipe 13. With this filling, the piston 7 rises, and the working fluid on the upper side of the piston 7 flows into the working fluid tank 10 via the working fluid supply pipe 14 and the valve 8. Since the liquid level of the hydraulic fluid in the hydraulic fluid tank 10 rises according to the volume of the sludge supplied to the lower part of the piston, when the liquid level reaches the first height, that is, the level gauge 12, Stop supplying the sludge (above, supply step). Next, the valves 3 and 8 are closed, the high-pressure pump 9 is operated, the hydraulic fluid in the hydraulic fluid tank 10 is pressed into the cylinder 6, and the pressure in the cylinder 6 is equal to the pressure in the container 5 which is a receiving device. Up to
Pressurizing step). Thereafter, the valve 4 is opened, and the sludge in the cylinder 6 is pushed out through the piston 7 by the working fluid supplied from the high-pressure pump 9. At this time, the sludge is injected into the press-in piping 15 and the valve 4
Is press-fitted into the container 5. With the press-fitting, the liquid level in the working fluid tank is lowered, and when the liquid level reaches the second height, which is lower than the first height by a predetermined interval, that is, the liquid level gauge 11, the press-fitting is stopped. Process). In the press-in process, the liquid level meter 1
From the height of 1 to the height of 12, the volume of the hydraulic fluid supplied from the hydraulic fluid tank 10 to the upper side of the piston 7 of the cylinder 6 is:
It is approximately equal to the volume of sludge pressed into the container 5 from the lower side of the piston 7. Sludge can be continuously injected into the container 5 by repeating the above-described steps of supply, pressurization, and injection.
【０００６】前記図２における圧入装置は、図３におけ
る汚泥油化装置に圧入装置１０４として適用することが
できる。そこで図３について説明すると、有機性汚泥１
０１をまず脱水装置１０２たとえば遠心分離機、ベルト
プレス式脱水機などによりあらかじめ脱水し、当該脱水
汚泥１０３を圧入装置１０４により予熱器１０５に供給
する。なお、有機性汚泥にあまり多量の水分が含まれて
いると、後述する熱化学的反応において多量の熱量を消
費するので、当該脱水装置１０２で水分含有率８０％以
下に脱水することが望ましい。さらに、後述する熱化学
的反応を効率よく進めるため、有機性汚泥にあらかじめ
炭酸ナトリウムなどのアルカリ成分を添加することが好
ましい。The press-fitting device shown in FIG. 2 can be applied as the press-fitting device 104 to the sludge liquefaction device shown in FIG. Therefore, referring to FIG. 3, the organic sludge 1
First, the dewatered sludge 103 is first dewatered by a dewatering device 102, for example, a centrifugal separator, a belt press dewatering device, etc., and the dewatered sludge 103 is supplied to a preheater 105 by a press-fitting device 104. If the organic sludge contains too much water, a large amount of heat is consumed in a thermochemical reaction described later. Therefore, it is desirable to dehydrate the organic sludge to a water content of 80% or less in the dewatering device 102. Further, it is preferable to add an alkali component such as sodium carbonate in advance to the organic sludge in order to efficiently advance a thermochemical reaction described later.
【０００７】予熱器１０５は、後述する冷却器１０７に
よって熱を与えられた熱媒体１０８を用いて脱水汚泥１
０３を間接的に予熱する。予熱器１０５により予熱した
脱水汚泥１０３を、次いで反応器１０６に供給し、ここ
で有機性汚泥１０３を高温高圧の条件下に熱化学的に反
応させる。当該反応器１０６は、前述した予熱器１０５
と同じ掻面式熱交換器、あるいは、多管式熱交換器を用
い、後述する第１熱交換器１２４により加熱された熱媒
体１０８により間接的に脱水汚泥１０３を加熱するもの
で、通常２５０℃〜３５０℃の温度および当該温度の水
蒸気圧に相当する圧力又はそれ以上の圧力で反応させる
ものである。[0007] The preheater 105 uses a heat medium 108 heated by a cooler 107 described later to remove the dewatered sludge 1.
03 indirectly. The dehydrated sludge 103 preheated by the preheater 105 is then supplied to a reactor 106, where the organic sludge 103 is thermochemically reacted under high temperature and high pressure conditions. The reactor 106 includes the preheater 105 described above.
The indirect heating of the dewatered sludge 103 by the heat medium 108 heated by the first heat exchanger 124 described later using the same scraping type heat exchanger or multi-tube heat exchanger The reaction is carried out at a temperature of from 0 ° C. to 350 ° C. and a pressure corresponding to the steam pressure at the temperature or higher.
【０００８】このように有機性汚泥を高温高圧で処理す
ると、バイオマスが熱化学的に変成し、種々の可燃性液
体が生成すると同時に流動性が極めて良好なものに変化
する。次いで、反応器１０６を経た固形物と可燃性液体
と水との混合物スラリー１０９を加圧状態のまま冷却器
１０７に供給し、熱媒体１０８により間接的に冷却す
る。このようにして冷却することにより熱が与えられた
熱媒体１０８を前記予熱器１０５の熱源として用いるこ
とにより、反応器１０６により与えた熱を効果的に回収
する。このようにして冷却した混合物スラリー１０９
を、次いで大気開放装置１１０に供給し、加圧下の状態
から常圧下の状態とする。When the organic sludge is treated at a high temperature and a high pressure in this manner, the biomass is thermochemically transformed, and various flammable liquids are generated, and at the same time, the fluidity is changed to an extremely good one. Next, the slurry 109 of the mixture of the solid, the flammable liquid, and water that has passed through the reactor 106 is supplied to the cooler 107 in a pressurized state, and is indirectly cooled by the heat medium 108. By using the heat medium 108 to which heat is given by cooling in this way as a heat source of the preheater 105, the heat given by the reactor 106 is effectively recovered. The mixture slurry 109 thus cooled is cooled.
Is then supplied to the open-to-atmosphere device 110 to change from a state under pressure to a state under normal pressure.
【０００９】大気開放装置１１０によって送給される混
合物スラリー１０９を、続いて浮上分離槽１１１に送給
し、混合物スラリー１０９中の可燃性液体から、特に水
に浮く一部の可燃性液体である油状物質１１２を選択的
に回収する。浮上分離槽１１１によって油状物質１１２
を除いた混合物スラリー１０９を、次いで抽出槽１１３
に送り、後述する溶剤回収装置１２０で回収した溶剤１
１４を加え充分に撹拌し、混合物スラリー１０９中の可
燃性液体を抽出する。当該抽出槽１１３としては、混合
物スラリー１０９と溶剤１１４とを必要かつ充分に接触
できるものであればどのような型式のものでもよく、混
合物スラリー１０９と溶剤１１４との混合物を槽内で撹
拌機で撹拌する簡単なものでも差し支えない。[0009] The mixture slurry 109 fed by the open-to-atmosphere device 110 is then sent to the flotation tank 111, and the flammable liquid in the mixture slurry 109 is a part of the flammable liquid, especially floating in water. The oily substance 112 is selectively recovered. Oil substance 112 by flotation tank 111
Is removed from the mixture slurry 109 and then into the extraction tank 113.
To the solvent 1 recovered by a solvent recovery device 120 described later.
14 and add sufficient stirring to extract the flammable liquid in the mixture slurry 109. The extraction tank 113 may be of any type as long as the mixture slurry 109 and the solvent 114 can be brought into necessary and sufficient contact with each other, and the mixture of the mixture slurry 109 and the solvent 114 is stirred by a stirrer in the tank. A simple thing to stir can be used.
【００１０】抽出槽１１３からバッチ式に、あるいは、
連続的に得られる混合物１１５を、次いで三相分離機１
１６に送給し、ここで廃水１１７と固形物１１８と抽出
物１１９とに分離する。当該三相分離機１１６は、いわ
ゆる遠心分離機であって、比重の異なる廃水１１７と固
形物１１８と抽出物１１９とをそれぞれ遠心作用によっ
て分離するもので公知のものを用いることができる。当
該三相分離機１１６によって得られる抽出物１１９を、
次いで溶剤回収装置１２０に送給し、ここで後述する第
２熱交換器１２５で加熱した熱媒体１０８で間接的に加
熱し、溶剤１１４を蒸発させ、蒸発残渣である可燃性液
体１２１を回収する。[0010] Batch from the extraction tank 113, or
The continuously obtained mixture 115 is then separated into three-phase separator 1
16 where it is separated into wastewater 117, solids 118 and extract 119. The three-phase separator 116 is a so-called centrifugal separator that separates wastewater 117, solid matter 118, and extract 119 having different specific gravities by centrifugal action, and can use a known one. The extract 119 obtained by the three-phase separator 116 is
Next, the solvent 114 is fed to the solvent recovery device 120, where the solvent 114 is indirectly heated by the heating medium 108 heated by the second heat exchanger 125 described later to evaporate the solvent 114 and recover the flammable liquid 121 as an evaporation residue. .
【００１１】１２２は加熱炉であって、溶剤回収装置１
２０から回収した可燃性液体１２１、あるいは、浮上分
離槽１１１から回収した油状物質１１２を燃料として用
いるもので、これらの燃料を燃焼させることにより得ら
れる熱風１２３を、第１熱交換器１２４に供給して、前
記反応器１０６に用いる熱媒体１０８を加熱し、次いで
当該熱風１２３を続いて第２熱交換器１２５に供給し
て、前記溶剤回収装置１２０で用いる熱媒体１０８を加
熱する。なお、１２６は排ガスであり、１２７は燃焼用
空気、１２８は燃焼灰を示す。Reference numeral 122 denotes a heating furnace, which is a solvent recovery device 1
The combustible liquid 121 recovered from the fuel tank 20 or the oily substance 112 recovered from the flotation tank 111 is used as fuel, and hot air 123 obtained by burning these fuels is supplied to the first heat exchanger 124. Then, the heat medium 108 used in the reactor 106 is heated, and then the hot air 123 is subsequently supplied to the second heat exchanger 125 to heat the heat medium 108 used in the solvent recovery device 120. In addition, 126 is exhaust gas, 127 is combustion air, and 128 is combustion ash.
【００１２】[0012]
【発明が解決しようとする課題】前述した圧入装置で
は、供給工程の終期には、ピストン７はシリンダ６の上
部に若干の余裕スペースを残して停止し、圧入工程の終
期には、ピストン７はシリンダ６の下部に余裕スペース
を残して停止するように設計されている。ところで、シ
リンダ内のピストンの前後で漏洩があった場合、汚泥の
作動液への混入又は作動液の汚泥への混入が起きること
になり、そうすると、ピストンの移動体積は、汚泥又は
作動液の移送容量と一致しなくなり、ピストンが往復動
して１工程の圧入が終了した時のピストンの位置は当初
よりずれてしまうことになる。このため、圧入装置の長
時間使用によりピストンの往復動を繰り返した場合、ピ
ストンとシリンダ間のパッキンの摩耗等によりその液密
性が低下すると、ピストンの前後で漏洩が生じ、ピスト
ンの停止位置は次第にずれていき、遂にはピストンがシ
リンダ内の上下いずれかの端部に達して、上記余裕スペ
ースは失われることになる。そうすると、それ以上の汚
泥又は作動液を供給できなくなり、装置の運転工程が停
止してしまうとともに、汚泥供給配管内又は作動液供給
配管内の圧力が急激に上昇することになる。本発明の目
的は、こうした事態が発生した場合に、これを当初の良
好な運転状態に復旧して、汚泥圧入装置の長時間の継続
運転を可能にすることにある。In the above-described press-fitting device, at the end of the supply process, the piston 7 stops while leaving a little extra space above the cylinder 6, and at the end of the press-fitting process, the piston 7 The cylinder 6 is designed to stop with leaving a margin space below. By the way, if there is a leak before and after the piston in the cylinder, the sludge will be mixed into the working fluid or the working liquid will be mixed into the sludge. The displacement does not match the displacement, and the piston reciprocates and the position of the piston when one step of press fitting is completed is shifted from the initial position. For this reason, when the reciprocating motion of the piston is repeated due to long use of the press-fitting device, if the liquid tightness is reduced due to wear of the packing between the piston and the cylinder, leakage occurs before and after the piston, and the stop position of the piston is changed. It gradually shifts, and eventually the piston reaches one of the upper and lower ends in the cylinder, and the above-mentioned extra space is lost. Then, the sludge or the working liquid cannot be supplied any more, and the operation process of the apparatus is stopped, and the pressure in the sludge supply pipe or the working liquid supply pipe rapidly increases. An object of the present invention is, when such a situation occurs, to restore the situation to an initial good operation state, thereby enabling a long-time continuous operation of the sludge injection apparatus.
【００１３】[0013]
【課題を解決するための手段及び作用】上記目的を達成
するための本発明の第１の特徴は、ピストンを内蔵する
シリンダのピストン下部側に汚泥供給ポンプにより汚泥
を供給し、ピストンを上昇させ、ピストン上部側の作動
液を作動液供給配管を介して作動液槽に戻し、作動液槽
内の作動液面が所定の第１の高さに上昇した時汚泥供給
を停止する汚泥の供給工程と、高圧ポンプにより作動液
をピストン上部側に供給して、ピストン下部側の汚泥を
受け入れ機器に圧入し、作動液槽内の作動液面が第１の
高さより低い第２の高さに下降した時、圧入を停止する
汚泥の圧入工程とを行なうようにした汚泥圧入装置にお
いて、汚泥の供給工程中、作動液槽内の作動液面が第１
の高さまで上昇する以前に、ピストンがシリンダ上端に
達した場合、作動液を第１の高さまで補給する作動液補
給手段を、前記作動液槽又は前記作動液供給配管に接続
した構成にある。A first feature of the present invention to achieve the above object is that sludge is supplied to a lower portion of a piston having a built-in piston by a sludge supply pump, and the piston is raised. Returning the working fluid on the upper side of the piston to the working fluid tank via the working fluid supply pipe, and stopping the sludge supply when the working fluid level in the working fluid tank rises to a predetermined first height. And supplying the working fluid to the upper part of the piston by the high-pressure pump, press-fitting the sludge from the lower part of the piston into the receiving device, and lowering the working fluid level in the working fluid tank to a second height lower than the first height. In the sludge press-in device which performs the sludge press-in step of stopping the press-in, the hydraulic fluid level in the hydraulic fluid tank is changed to the first level during the sludge supply step.
When the piston reaches the upper end of the cylinder before it rises to the height, the hydraulic fluid replenishing means for replenishing the hydraulic fluid to the first height is connected to the hydraulic fluid tank or the hydraulic fluid supply pipe.
【００１４】また、本発明の第２の特徴は、前記第１の
特徴で述べる汚泥圧入装置において、汚泥の圧入工程
中、作動液槽内の作動液面が前記第２の高さまで下降す
る以前に、ピストンがシリンダ下端に達した場合、作動
液を第２の高さになるまで排出する作動液排出手段を、
前記作動液槽又は作動液供給配管に接続した構成にあ
る。 本発明の上記解決手段により、汚泥圧入装置の長
時間運転時に、ピストンの前後に漏洩が生じ、ピストン
がシリンダの端部に達して運転不能の状態になっても、
作動液槽に対し作動液の補給または排除を行なうことに
より、圧入装置を当初の良好な運転状態に速やかに復旧
する。According to a second feature of the present invention, in the sludge press-in device described in the first feature, during the step of injecting the sludge, before the hydraulic fluid level in the hydraulic fluid tank falls to the second height. In addition, when the piston reaches the lower end of the cylinder, a hydraulic fluid discharging means for discharging the hydraulic fluid until the second level is reached,
The hydraulic fluid tank or the hydraulic fluid supply pipe is connected. According to the above solution of the present invention, during long-time operation of the sludge injection device, leakage occurs before and after the piston, even if the piston reaches the end of the cylinder and becomes inoperable,
By replenishing or removing the hydraulic fluid from the hydraulic fluid tank, the press-fitting device is quickly restored to the initial good operation state.
【００１５】[0015]
【実施例】図１に本発明の１実施例を示す。図１におい
て、汚泥Ｍの汚泥貯槽１、汚泥供給ポンプ２、第１の開
閉弁３、第２の開閉弁４は、汚泥供給配管１３及び汚泥
圧入配管１５により直列に接続されている。ピストン７
を内蔵するシリンダ６のピストン下部側は、弁３と弁４
との間において汚泥供給配管１３に接続されている。シ
リンダ６のピストン上部側、高圧ポンプ９、作動液槽１
０は、作動液供給配管１４により直列に接続されてお
り、該高圧ポンプ９には第３の開閉弁８が並列に接続さ
れている。作動液槽１０には、該液槽内において所定の
第１の高さにある作動液面を検知する液面計１２、及び
第１の高さより所定間隔低い第２の高さの作動液面を検
知する液面計１１が設けられている。以上の構成は、図
２に示す構成と同様である。FIG. 1 shows an embodiment of the present invention. In FIG. 1, a sludge storage tank 1 for sludge M, a sludge supply pump 2, a first on-off valve 3, and a second on-off valve 4 are connected in series by a sludge supply pipe 13 and a sludge press-fitting pipe 15. Piston 7
The lower part of the piston of the cylinder 6 containing the
Is connected to the sludge supply pipe 13. Upper side of piston of cylinder 6, high pressure pump 9, hydraulic fluid tank 1
Numeral 0 is connected in series by a hydraulic fluid supply pipe 14, and a third on-off valve 8 is connected to the high-pressure pump 9 in parallel. The hydraulic fluid tank 10 has a liquid level gauge 12 for detecting a hydraulic fluid level at a predetermined first height in the liquid tank, and a hydraulic fluid level at a second height lower than the first height by a predetermined distance. Is provided. The above configuration is the same as the configuration shown in FIG.
【００１６】而して、本実施例においては、作動液を補
給する補給手段１９及び作動液を排出する排出手段２０
が作動液槽１０に配管接続されている。補給手段１９
は、ポンプ又は作動液槽１０内の第１の液面より上方に
水位を有するタンク等の作動液移送手段及び開閉弁等で
構成され、排出手段２０は開閉弁等で構成される。汚泥
供給配管１３には、その過剰圧力を解放するための開閉
弁１６の一端が接続され、他端は汚泥貯槽１に解放して
いる。汚泥供給配管１３及び作動液供給配管１４には、
それぞれ圧力計１７及び１８が接続されている。In this embodiment, the replenishing means 19 for replenishing the hydraulic fluid and the discharging means 20 for discharging the hydraulic fluid are provided.
Are connected to the working fluid tank 10 by piping. Replenishment means 19
Is constituted by a pump or a hydraulic fluid transfer means such as a tank having a water level above the first liquid level in the hydraulic fluid tank 10 and an on-off valve, and the discharge means 20 is constituted by an on-off valve and the like. One end of an on-off valve 16 for releasing the excess pressure is connected to the sludge supply pipe 13, and the other end is open to the sludge storage tank 1. In the sludge supply pipe 13 and the working fluid supply pipe 14,
Pressure gauges 17 and 18 are connected respectively.
【００１７】上記のように構成された本実施例の汚泥圧
入装置は、図２に示す圧入装置と同様に汚泥の圧入を行
なうものあるが、これを長時間運転し、前記のようにピ
ストンの位置が当初よりずれて、シリンダ６内への汚泥
の充填中に、ピストン７がシリンダ６内の上端部に達し
た場合には、汚泥供給配管１３内の圧力が急激に上昇す
る。この圧力の上昇を汚泥供給配管１３に配設した圧力
計１７により検出し、汚泥供給ポンプ２を停止し、弁１
６を開いて汚泥供給配管内の圧力を解放する。次いで、
弁１６を閉め、弁１９を開いて作動液槽１０内に作動液
を補給し、前記余裕スペースが形成されるように、液面
が液面計１２より若干上方に達した時点で弁１９を閉じ
る。以上の操作により、圧入装置の状況は、当初の供給
工程終了時の状況に一致することになり、次の加圧工程
に進行することができる。The sludge press-in device of the present embodiment having the above-described configuration performs the press-in of sludge similarly to the press-in device shown in FIG. When the piston 7 reaches the upper end portion in the cylinder 6 during the filling of the sludge into the cylinder 6 while the position is shifted from the initial position, the pressure in the sludge supply pipe 13 rapidly increases. This rise in pressure is detected by a pressure gauge 17 disposed in the sludge supply pipe 13, the sludge supply pump 2 is stopped, and the valve 1
Open 6 to release the pressure in the sludge supply pipe. Then
The valve 16 is closed, the valve 19 is opened, and the working fluid is replenished into the working fluid tank 10. When the liquid level reaches a slightly higher level than the liquid level gauge 12, the valve 19 is closed so that the above-mentioned extra space is formed. close. By the above operation, the state of the press-fitting device matches the state at the end of the initial supply step, and the process can proceed to the next pressurizing step.
【００１８】また、汚泥の容器５への圧入中にピストン
７がシリンダ６の下端部に達した場合には、作動液供給
配管１４内の圧力が急激に上昇する。この圧力の上昇を
作動液供給配管１４に設置した圧力計１８で検出し、高
圧ポンプ９を停止し、弁８を開いて作動液供給配管１４
内の圧力を解放する。次いで、弁８を閉め、弁２０を開
いて作動液槽１０内の作動液を排出し、液面が液面計１
１より若干下方に達した時点で弁２０を閉じる。以上の
操作により、圧入装置の状況は、当初の圧入工程の終了
時の状況に一致することになり、次の供給工程に進行す
ることができる。If the piston 7 reaches the lower end of the cylinder 6 during the press-fitting of the sludge into the container 5, the pressure in the hydraulic fluid supply pipe 14 rises sharply. This increase in pressure is detected by a pressure gauge 18 installed in the hydraulic fluid supply pipe 14, the high pressure pump 9 is stopped, and the valve 8 is opened to open the hydraulic fluid supply pipe 14.
Release pressure inside. Next, the valve 8 is closed, the valve 20 is opened, and the hydraulic fluid in the hydraulic fluid tank 10 is discharged.
The valve 20 is closed at a point slightly below 1. By the above operation, the state of the press-fitting device matches the state at the end of the initial press-fitting step, and the process can proceed to the next supply step.
【００１９】以上のように、本実施例によれば、汚泥圧
入装置の運転中にピストンの位置が当初よりずれて、シ
リンダ内の上端部に達した場合にも、また下端部に達し
た場合にも、容易に当初の状態に容易に復旧して、圧入
装置の継続運転を行なうことができる。As described above, according to this embodiment, when the position of the piston is shifted from the initial position during operation of the sludge injection device and reaches the upper end in the cylinder, or when the piston reaches the lower end. In addition, the press-fitting device can be easily restored to the initial state, and the press-fitting device can be continuously operated.
【００２０】次に、上記の汚泥圧入装置を図３に示す汚
泥油化装置に適用した例について説明する。該汚泥圧入
装置は、図３における余熱器を介して反応器１０６に脱
水汚泥を圧入する圧入装置１０４として用いられ、作動
液には水が使用された。汚泥の供給工程中における汚泥
供給配管１３内の圧力は約２ｋｇ／ｃｍ2 とし、加圧工
程中におけるシリンダ６内の圧力は反応器１０６内の圧
力の１００ｋｇ／ｃｍ2 と同等となるまで高めた。この
ようにして、図３に示すフローに従い所望の油化を行な
った。 しかし、ここで使用した汚泥圧入装置は、ピス
トン７の側面の僅かな隙間のために、汚泥の水側への混
入や水の汚泥側への混入があり、長時間の運転を行なう
うちにピストンの位置が次第にずれてしまい、運転開始
約１０時間後、汚泥の供給工程中にピストン７がシリン
ダ６内の上端部に達してシリンダ内が汚泥で充満し、汚
泥供給配管１３内の圧力が約１０ｋｇ／ｃｍ2 まで上昇
した。この圧力上昇を汚泥供給配管１３に設置した圧力
計１７で検知し、自動的に汚泥供給ポンプ２を停止する
とともに、弁３、８を閉じた。次いで、弁１６を開き、
汚泥供給配管１３内の圧力を解放した。さらに、弁１９
を開いて水を入れた作動液槽１０内の水位が液面計１２
より若干上方に達するまで水を供給した。以上の操作に
より、汚泥圧入装置は、当初の汚泥の供給工程終了時と
同様な状態に復旧し、以降は通常どおり、加圧および圧
入工程の操作を行なった。Next, an example in which the above-described sludge press-in device is applied to a sludge oiling device shown in FIG. 3 will be described. The sludge press-in device was used as a press-in device 104 for pressing dehydrated sludge into a reactor 106 via a preheater in FIG. 3, and water was used as a working fluid. The pressure in the sludge supply pipe 13 during the sludge supply step was set to about 2 kg / cm 2 , and the pressure in the cylinder 6 during the pressurization step was increased until it became equal to the pressure in the reactor 106 of 100 kg / cm 2 . . Thus, desired oiling was performed according to the flow shown in FIG. However, in the sludge injection device used here, the sludge is mixed into the water side and the water is mixed into the sludge side due to the slight clearance on the side surface of the piston 7. About 10 hours after the start of operation, the piston 7 reaches the upper end in the cylinder 6 during the sludge supply process, and the inside of the cylinder is filled with sludge, and the pressure in the sludge supply pipe 13 is reduced to about 10 hours. It increased to 10 kg / cm 2 . This pressure increase was detected by a pressure gauge 17 installed in the sludge supply pipe 13, and the sludge supply pump 2 was automatically stopped, and the valves 3 and 8 were closed. Next, the valve 16 is opened,
The pressure in the sludge supply pipe 13 was released. Further, the valve 19
The water level in the working fluid tank 10 in which water is
Water was supplied until it reached slightly higher. By the above operation, the sludge injection apparatus was restored to the same state as at the end of the initial sludge supply step, and thereafter the pressurization and injection steps were performed as usual.
【００２１】また運転開始約２０時間後、汚泥の圧入工
程中にピストン７がシリンダ６内の下端部に達してシリ
ンダ６内が水で充満し、作動液供給配管１４内の圧力が
約１５０ｋｇ／ｃｍ2 まで上昇した。この圧力上昇を作
動液供給配管１４に設置した圧力計１８で検知し、自動
的に高圧ポンプ９を停止するとともに弁４を閉じた。次
いで、弁８を開き、作動液供給配管１４内の圧力を解放
した。さらに、弁２０を開いて作動液槽１０内の水位が
液面計１１より若干下方に達するまで水を排出した。以
上の操作により、装置は、当初の汚泥圧入工程の終了時
と同様な状態に復旧し、以降は通常どおり、供給工程の
操作を行なった。Approximately 20 hours after the start of operation, during the sludge injection step, the piston 7 reaches the lower end of the cylinder 6 and fills the cylinder 6 with water. cm 2 . This pressure increase was detected by a pressure gauge 18 installed in the working fluid supply pipe 14, and the high pressure pump 9 was automatically stopped and the valve 4 was closed. Next, the valve 8 was opened to release the pressure in the working fluid supply pipe 14. Further, the valve 20 was opened, and water was discharged until the water level in the working fluid tank 10 reached slightly below the liquid level gauge 11. By the above operation, the apparatus was restored to the same state as at the end of the initial sludge injection step, and thereafter, the supply step was operated as usual.
【００２２】上述したようなトラブルは約１０〜２０時
間に１度程度の頻度で発生したが、自動的な復旧によ
り、汚泥の圧入を約５００時間継続して行なうことがで
きた。次に、本発明の他の実施例を図４により説明す
る。本実施例においては、圧力解放弁１６の一端は、シ
リンダ６の下部直近に接続されており、汚泥供給配管１
３内が異常高圧になった場合の圧力解放を迅速に行なう
ことができる。また作動液の補給手段１９及び排出手段
２０は、作動液供給配管１４に接続されており、作動液
槽１０に対する作動液の補給又は排出に弁８を操作する
必要はあるが、当該構成とすることにより、作動液槽１
０に対するよりも配管に対して容易に接続することがで
きる。Although the above-mentioned trouble occurred at a frequency of about once every 10 to 20 hours, the sludge was injected continuously for about 500 hours by automatic recovery. Next, another embodiment of the present invention will be described with reference to FIG. In the present embodiment, one end of the pressure release valve 16 is connected immediately below the lower part of the cylinder 6, and the sludge supply pipe 1
The pressure can be quickly released when the pressure inside the chamber 3 becomes abnormally high. The replenishing means 19 and the discharging means 20 for the hydraulic fluid are connected to the hydraulic fluid supply pipe 14, and it is necessary to operate the valve 8 to supply or discharge the hydraulic fluid to the hydraulic fluid tank 10. As a result, the hydraulic fluid tank 1
It can be more easily connected to piping than to zero.
【００２３】なお、上記各実施例において、各ポンプの
起動、停止は、制御装置を設けて液面計１１、１２並び
に圧力計１７、１８の検知結果に基づいて、自動的に行
なうようにすることが好ましく、またシリンダ６の上下
を特定した縦型で説明したが、必要に応じこれを横にし
たり、上下逆にしたりして実施することができる。In each of the above embodiments, the start and stop of each pump are automatically performed based on the detection results of the liquid level gauges 11 and 12 and the pressure gauges 17 and 18 by providing a control device. It is preferable to describe the vertical type in which the upper and lower portions of the cylinder 6 are specified. However, if necessary, the cylinder 6 can be set horizontally or upside down.
【００２４】[0024]
【発明の効果】以上説明したように、本発明によれば、
汚泥圧入装置の運転中にピストンの前後に漏洩が生じ、
ピストンがシリンダ内の端部に達して運転不能に陥った
場合にも、作動液槽に対し、作動液の補給または排除を
行なうことにより、汚泥圧入装置を当初の良好な運転状
態に容易に復旧してその運転を継続することができ、汚
泥を長時間に亙って安定して受け入れ機器に圧入するこ
とができる。As described above, according to the present invention,
Leakage occurs before and after the piston during operation of the sludge injection device,
Even if the piston reaches the end of the cylinder and becomes inoperable, replenishing or removing the hydraulic fluid from the hydraulic fluid tank makes it easy to restore the sludge injection device to its initial good operating condition. Thus, the operation can be continued, and the sludge can be stably injected into the receiving device for a long time.
【図１】本発明による汚泥圧入装置の１実施例を示す図FIG. 1 is a diagram showing one embodiment of a sludge injection device according to the present invention.
【図２】先行発明に係る汚泥圧入装置の例を示す図FIG. 2 is a diagram showing an example of a sludge injection device according to a prior invention.
【図３】図２に示す汚泥圧入装置が適用される汚泥油化
装置のフローを示す図FIG. 3 is a diagram showing a flow of a sludge liquefaction apparatus to which the sludge injection device shown in FIG. 2 is applied.
【図４】本発明による汚泥圧入装置の他の実施例を示す
図FIG. 4 is a diagram showing another embodiment of a sludge injection device according to the present invention.
１…汚泥貯槽 ２…汚泥供給ポ
ンプ ３、４、８、１６…開閉弁 ５…受け入れ機
器 ６…シリンダ ７…ピストン ９…高圧ポンプ １０…作動液槽 １１、１２…液面計 １３…汚泥供給
配管 １４…作動液供給配管 １５…汚泥圧入
配管 １７、１８…圧力計 １９…作動液補
給手段 ２０…作動液排出手段DESCRIPTION OF SYMBOLS 1 ... Sludge storage tank 2 ... Sludge supply pump 3, 4, 8, 16 ... On-off valve 5 ... Receiving equipment 6 ... Cylinder 7 ... Piston 9 ... High pressure pump 10 ... Hydraulic fluid tank 11, 12 ... Level gauge 13 ... Sludge supply piping 14 ... Hydraulic fluid supply pipe 15 ... Sludge press-fitting pipe 17, 18 ... Pressure gauge 19 ... Hydraulic fluid replenishment means 20 ... Hydraulic fluid discharge means
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C02F 11/00 - 11/20 B01J 3/02 B01J 4/00 - 4/04 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) C02F 11/00-11/20 B01J 3/02 B01J 4/00-4/04
Claims (2)
下部側に汚泥供給ポンプにより汚泥を供給し、ピストン
を上昇させ、ピストン上部側の作動液を作動液供給配管
を介して作動液槽に戻し、作動液槽内の作動液面が所定
の第１の高さに上昇した時汚泥供給を停止する汚泥の供
給工程と、高圧ポンプにより作動液をピストン上部側に
供給して、ピストン下部側の汚泥を受け入れ機器に圧入
し、作動液槽内の作動液面が第１の高さより低い第２の
高さに下降した時、圧入を停止する汚泥の圧入工程とを
行なうようにした汚泥圧入装置において、汚泥の供給工
程中、作動液槽内の作動液面が第１の高さまで上昇する
以前に、ピストンがシリンダ上端に達した場合、作動液
を第１の高さまで補給する作動液補給手段を、前記作動
液槽又は前記作動液供給配管に接続したことを特徴とす
る汚泥の継続的圧入装置。1. Sludge is supplied by a sludge supply pump to a lower part of a piston having a built-in piston, a piston is raised, and hydraulic fluid on an upper side of the piston is returned to a hydraulic fluid tank via a hydraulic fluid supply pipe. A sludge supply step of stopping the sludge supply when the working fluid level in the liquid tank rises to a predetermined first height, and supplying the working fluid to the upper part of the piston by a high-pressure pump to remove the sludge on the lower part of the piston. A sludge press-in device, which press-fits into a receiving device and performs a press-in process of sludge to stop press-in when the hydraulic fluid level in the hydraulic fluid tank drops to a second height lower than the first height; During the sludge supply process, before the hydraulic fluid level in the hydraulic fluid tank rises to the first height, if the piston reaches the upper end of the cylinder, the hydraulic fluid replenishment means for replenishing the hydraulic fluid to the first height, The working fluid tank or the working fluid A continuous sludge press-in device connected to a supply pipe.
作動液槽内の作動液面が前記第２の高さまで下降する以
前に、ピストンがシリンダ下端に達した場合、作動液を
第２の高さになるまで排出する作動液排出手段を、前記
作動液槽又は作動液供給配管に接続したことを特徴とす
る汚泥の継続的圧入装置。2. The method according to claim 1, wherein during the step of injecting the sludge,
If the piston reaches the lower end of the cylinder before the hydraulic fluid level in the hydraulic fluid tank falls to the second height, the hydraulic fluid discharging means for discharging the hydraulic fluid until the hydraulic fluid reaches the second height, A continuous sludge press-in device connected to a liquid tank or a working liquid supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5196368A JP3071345B2 (en) | 1993-08-06 | 1993-08-06 | Continuous sludge injection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5196368A JP3071345B2 (en) | 1993-08-06 | 1993-08-06 | Continuous sludge injection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0747397A JPH0747397A (en) | 1995-02-21 |
| JP3071345B2 true JP3071345B2 (en) | 2000-07-31 |
Family
ID=16356699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5196368A Expired - Fee Related JP3071345B2 (en) | 1993-08-06 | 1993-08-06 | Continuous sludge injection equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3071345B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101554773B1 (en) | 2009-10-28 | 2015-09-22 | 뉴기 인더스트리즈, 아이엔씨. | Table Tennis Robot and Method of Operation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0770676A3 (en) | 1995-10-23 | 1999-05-19 | Ajinomoto Co., Ltd. | Method for treating fermentation broth |
-
1993
- 1993-08-06 JP JP5196368A patent/JP3071345B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101554773B1 (en) | 2009-10-28 | 2015-09-22 | 뉴기 인더스트리즈, 아이엔씨. | Table Tennis Robot and Method of Operation |
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| Publication number | Publication date |
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| JPH0747397A (en) | 1995-02-21 |
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