WO2023085448A1 - Sludge drying system - Google Patents

Sludge drying system Download PDF

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Publication number
WO2023085448A1
WO2023085448A1 PCT/KR2021/016290 KR2021016290W WO2023085448A1 WO 2023085448 A1 WO2023085448 A1 WO 2023085448A1 KR 2021016290 W KR2021016290 W KR 2021016290W WO 2023085448 A1 WO2023085448 A1 WO 2023085448A1
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Prior art keywords
unit
sludge
drying
air
ejector
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PCT/KR2021/016290
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French (fr)
Korean (ko)
Inventor
조은만
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(주)리엔텍엔지니어링
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Publication of WO2023085448A1 publication Critical patent/WO2023085448A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/22—Crushing mills with screw-shaped crushing means
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply

Definitions

  • the present invention relates to a sludge drying system, and more particularly, to a sludge drying system capable of stably injecting and drying sludge having a low moisture content of 70% or less.
  • a mechanical dehydration device separates some of the free water from the moisture in the sludge through a filter press and discharges it in the form of a cake with a moisture content of about 80 to 85%. let it
  • most of the conventional sludge drying systems are systems for drying wet sludge having a water content of 70% or more, and a mono pump or a piston pump is mainly used as a device for injecting and pumping sludge raw materials due to high sludge moisture content.
  • the mono pump or piston pump which is a pressure-feeding method of the conventional sludge drying system, can be injected only in the case of sludge containing high moisture content of 70% or more and is not suitable for sludge with low moisture content of 70% or less.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a sludge drying system capable of stably injecting and drying sludge, which is a raw material even for sludge with a low water content of 70% or less.
  • the present invention for achieving the above object is a relay hopper unit for receiving wastewater and purified water sludge in the form of a dewatering cake from a filter press and temporarily storing them, an air supply unit for supplying air, and the sludge flowing from the relay hopper unit.
  • An ejector unit that supplies air introduced from the air supply unit and sprays the air by increasing the flow rate, a drying unit that dries the sludge and air flowing from the ejector unit in a swirling flow, and a dried sludge storage unit that stores the dried sludge from the drying unit
  • a control unit for controlling the operation of the relay hopper unit, the air supply unit, the ejector unit, and the drying unit, between the filter press and the relay hopper unit, wastewater and clean water sludge from the filter press are dehydrated in the form of a cake
  • It includes a transfer conveyor for receiving and transporting to one side, and the relay hopper unit, a level sensor, operated by the level sensor, and a mixer for flattening the inflow sludge and located below the mixer, crushing and transporting the inflow sludge
  • the air supply unit includes a blower for supplying air introduced from the atmosphere at a constant pressure, and steam is applied to the air introduced from the atmosphere to raise the
  • the drying unit may further include a cleaning scrubber for treating wet air and dust generated during drying from the drying unit.
  • the transfer conveyor receives a signal from the control unit to transfer the dehydrated cake to the other side. After reverse rotation of the transfer screw, it is characterized in that it is discharged to a separate dewatering cake storage unit.
  • the ejector unit is provided on the side of the sludge inlet pipe into which the sludge flows, and further includes a crushing means composed of an air cylinder and a crushing rod interlocked with the pneumatic cylinder, and the pneumatic cylinder is operated by the control unit It is characterized in that this is controlled.
  • the pressure and flow rate generated by the negative pressure ejector method enable continuous injection and injection of sludge as a raw material and crushing at the same time, so it is very suitable for sludge with a low moisture content of 70% or less.
  • pneumatic crushing provided separately It is possible to secure the operation reliability of the device by the rod.
  • the final cyclone separator of the drying unit further includes a wet separation and washing function, so that the entire sludge drying system can be selectively applied to a dry or wet and dry mixed method, depending on the state of the inflow sludge, particle size and concentration. It is possible to smoothly apply the separator.
  • FIG. 1 is a block diagram showing a sludge drying system according to a preferred embodiment of the present invention.
  • FIG. 2 is a configuration diagram showing the ejector of the present invention.
  • FIG. 3 is a view showing the flow analysis results for the ejector of the present invention.
  • Figure 4 is a view showing a cyclone separator at the end of the drying unit including a wet separation and cleaning function according to the present invention, (a) is a front view, and (b) is a plan view.
  • a filter press which is a mechanical dehydration device, and supplied in the form of a dewatering cake.
  • FIG. 1 is a configuration diagram showing a sludge drying system according to a preferred embodiment of the present invention
  • FIG. 2 is a configuration diagram showing an ejector of the present invention
  • FIG. 3 is a diagram showing flow analysis results for the ejector of the present invention.
  • the relay hopper part 200 As shown in the sludge drying system of the present invention, the relay hopper part 200, the air supply part 300, the ejector part 400, the drying part 500, the dried sludge storage part 600, and the relay hopper part ,
  • the transfer conveyor 100 is supplied to the upper side of sludge (hereinafter referred to as 'sludge') made in the form of a dewatering cake by a filter press from wastewater and purified water sludge and supplied to the relay hopper unit 200,
  • 'sludge' sludge
  • a transfer screw 110 operated by a driving motor connected to the control unit 700 is included.
  • Discharge ports 120 and 130 equipped with slide gates that can be opened and closed by air cylinders are provided on one side and the other side of the lower portion of the transfer conveyor 100, respectively, and sludge is discharged through the one side outlet 120 during normal operation.
  • the transfer screw 110 is also reversely rotated by a drive motor that receives a reverse rotation signal from the control unit 700 and rotates in reverse, as will be described later.
  • the sludge is discharged through the outlet 130.
  • the relay hopper unit 200 is for receiving sludge from the transfer conveyor 110 and temporarily storing it, a mixer operated by a drive motor connected to the control unit 700, more preferably a ribbon mixer (Ribbon Mixer, 220) and a transfer screw 240 located below the ribbon mixer and operated by a drive motor connected to the control unit 700.
  • a mixer operated by a drive motor connected to the control unit 700
  • ribbon mixer Ribbon Mixer, 220
  • transfer screw 240 located below the ribbon mixer and operated by a drive motor connected to the control unit 700.
  • the ribbon mixer 220 is a mixing device in which a spiral ribbon-type impeller is attached and operated. More specifically, the outer ribbon and the inner ribbon rotate in the forward and reverse directions to create opposite vertical movements. It is possible to flatten the introduced sludge by first crushing it by mixing the sludge into the sludge.
  • a separate level sensor (Level Sensor, 210) is provided on the upper side of the relay hopper unit 200 to sense the distance to the surface of the incoming sludge with ultrasonic waves and send it to the control unit 700, and the control unit 700 As the drive motor operates by receiving a signal from the above, the revane mixer 220 operates.
  • the sludge crushed by the ribbon mixer 220 is transported in one direction to the lower conveying screw 240 and discharged, and the sludge discharged in this way is transported by a certain amount by a separate quantitative supply conveyor 260 to be described later. It is supplied to the ejector unit 400.
  • the air supply unit 300 is for supplying air necessary for drying the sludge to the ejector unit 400 from the outside, and a blower 320 for supplying air introduced from the atmosphere at a certain pressure, and from the atmosphere It is configured to include a heat exchanger 340 that heats the introduced air to raise it to a certain temperature, preferably about 100° C., and then supplies it between the blower 320 and the ejector unit 400.
  • air is supplied at a certain pressure from the outside by the blower, and the air received through a heat exchanger, preferably a steam heat exchanger, is combined with the heated air through a separate line to form an ejector unit 400 to be described later.
  • a heat exchanger preferably a steam heat exchanger
  • the ejector unit 400 amplifies the flow rate of air introduced from the air supply unit 300 and crushes the sludge introduced from the relay hopper unit 200 into particles while crushing the drying unit ( 500) to perform the function of discharging.
  • the ejector unit 400 is connected to the air inlet pipe 410 through which air flows from the air supply unit 300 and the air inlet pipe 410, and has a reduced cross-section in a certain section.
  • An air and sludge discharge pipe 430 equipped with a flow rate accelerating unit 420, and a sludge inlet pipe 440 vertically coupled to the flow rate accelerating unit 420 and into which the sludge supplied from the relay hopper unit 200 flows ) is composed of.
  • the flow rate of the air introduced by the flow acceleration unit 420 through the reducer-shaped air inlet pipe 410 is amplified while the pressure is relatively low.
  • Sludge is introduced through the sludge inlet pipe 440 by so-called negative pressure.
  • the minimum diameter of the air inlet pipe 410 is the minimum diameter of the sludge inlet pipe 440 and It is desirable that they are formed in the same size.
  • Figure 3 shows the results of flow analysis under the same conditions as in [Table 1] below, the minimum diameter of the air inlet pipe 410 is 140 mm, and the minimum diameter of the sludge inlet pipe 440 is the same size As shown in FIG. 3 (a) and FIG. 3 (b), which show the results of flow analysis by varying the inlet flow rate, it can be seen that the flow rate of air is amplified, resulting in a large negative pressure.
  • the sludge flowing from the relay hopper part 200 is crushed and granulated by amplifying the flow rate without requiring large power like the conventional mono pump or piston pump, and then to the drying part 500 at the rear end Continuous injection and injection of sludge, which is a raw material, is possible.
  • the heat exchanger 340 of the air supply unit 300 By supplying air heated at a certain temperature or higher by the ejector unit 400 to the sludge having an enlarged drying surface area, an effect of relatively lowering the moisture content is also generated.
  • a crushing means composed of an air cylinder 482 on the side of the sludge inlet pipe 440 and a crushing rod 484 linked to the pneumatic cylinder ( 480) is further included.
  • the operation of the pneumatic cylinder 482 is controlled by the control unit 700, and the crushing rod 484 interlocked by the pneumatic cylinder 482 can be periodically or intermittently stretched in the longitudinal direction.
  • the sludge inlet pipe 440 in the form of a piece pipe is installed perpendicular to the flow rate acceleration part 420 with a reduced cross section for a certain period.
  • the sludge inlet pipe When the crushing rod 484 is moved in the longitudinal direction by the pneumatic cylinder 482 when large sludge is caught in 440 and does not flow, as a result, the sludge caught by the crushing rod 484 is crushed Since it is introduced, it is possible to fundamentally solve the problem that the ejector function is not implemented because the negative pressure is not generated.
  • the sludge that has passed through the ejector unit 400 passes through a drying unit 500 made of a cyclone dryer for drying by rotating and flowing with air, and the drying unit 500 is a dry type to further lower the moisture content of the sludge. It is preferable that a plurality of cyclone separators 520 and 540 having a separation and collection function of are connected to each other.
  • the sludge that has passed through the ejector unit 400 is introduced into the first cyclone dryer 520, a part of the sludge introduced together with the air is separated from the air and gathered to the lower side, and the remaining air is discharged to the upper side and the second While passing through the cyclone dryer 540 sequentially, the final sludge and air are separated.
  • the plurality of cyclone dryers 520 and 540 are limited to two and described, this is only an example, and the number can be varied to three or four if necessary in consideration of moisture content, etc. Of course .
  • a first cyclone separator 560 and a second cyclone separator 580 are further included at the rear end of the plurality of cyclone dryers 520 and 540 to configure the drying unit 500. I can.
  • the dry sludge storage unit 600 is preferably in the form of a container that can be mounted on a container vehicle to facilitate normal mobility.
  • a separate scrubber 800 is connected to the second cyclone separator 580, which is the last stage of the drying unit 500, to remove wet air and dust generated during drying from the drying unit 500.
  • wet air and dust contained in the air are collected by the fine droplets of about 70 microns or less sprayed by the fine spray nozzle 850 and discharged through the final drain pump 860, and the general spray nozzle ( 840) to remove the dust of 100 microns or more or to prevent aggregation into scale inside the cleaning scrubber, it is continuously cleaned and then discharged through the drain pump 860 as well.
  • the transfer conveyor 110 when it is determined that any one of the relay hopper unit, air supply unit, ejector unit, and drying unit is in an emergency due to abnormal operation, from the control unit 700 It may be configured to receive a signal indicating an emergency, rotate the transfer screw 110 in reverse to transfer the dehydrated cake to the other side, and then discharge it to a separate dehydration cake storage unit 900.
  • the finally dried sludge is stored in the dry sludge storage unit 600, and during abnormal operation, the undried sludge is stored in a separate dewatering cake storage unit 900, so that the operation of the entire system is not disrupted. It is possible to implement a sludge drying system that does not
  • the drying unit 500 is composed of a plurality of cyclone dryers and separators 520, 540, 560, and 580 having a dry separation and collection function connected to each other, but the last stage, the first
  • the two-cyclone separator 580 may further include a wet separation and cleaning function.
  • FIG. 4 is a view showing a cyclone separator at the end of the drying unit including a wet separation and cleaning function according to the present invention, where (a) is a front view and (b) is a plan view.
  • the last cyclone separator in the plurality of drying units that swirls and flows the sludge and air introduced from the ejector unit to dry them, has a dry separation and collection function.
  • the separator structure causes a swirling flow at the upper part, and the dust is generated by the droplets sprayed by the plurality of fine spray nozzles 582 installed on the upper part. It may be configured so that the wet separation cleaning function to be removed is applicable.
  • the fine droplets of about 70 microns or less sprayed by the fine spray nozzle 582 detach the fine dust when drying and rotate and descend to the lower part of the conical cyclone separator, and the lower part is blocked by the switching valve 586. It is discharged through the final drain pipe 588, and wet air and dust that are not collected are introduced into the cleaning scrubber 800 through the upper part.
  • the water supplied to the fine spray nozzle 582 is supplied from a separate fog pump 820 and a very clean time constant is used.
  • the general spray nozzle 584 provided inside is a means for continuously cleaning in order to prevent the dust from aggregating into scale inside the fine spray nozzle and separator
  • the washing water is a cleaning scrubber 800 It is connected to the water supply pipe of the washing water pump 830 installed in the water tank to receive washing water.
  • the fine spray nozzle and the general spray nozzle provided in the second cyclone separator 580 are used in a dry method, and when necessary, the switching valve 586 installed at the bottom of the separator is used. After closing, the fine spray nozzle 582 and the general spray nozzle 584 provided on the upper part of the last cyclone separator 580 are operated so that it can be used by switching from dry to wet separation cleaning function.
  • the front cyclone separator 560 is dry, and the last cyclone separator 580 is wet, so that it is possible to operate in a dry and wet mixed method, so the user can use the entire sludge drying system dry or dry wet
  • the method it is possible to smoothly apply the separator according to the state of the inflow sludge, the size and concentration of the particles.
  • the second cyclone separator 580 which is the last stage
  • dry sludge is discharged through the cyclone separator 560 and the second cyclone separator 580 at the front stage, but the last stage
  • the dry sludge is discharged only through the cyclone separator 560 at the front end and discharged to the dry sludge storage unit 600, where the uncollected dust is the second cyclone separator 580 It is removed by a plurality of fine spray nozzles 582 and general spray nozzles 584 and discharged through a separate final drain pipe 588 under the separator.

Abstract

The present invention relates to a sludge drying system capable of stably injecting and drying sludge as a raw material, and even low-moisture sludge having a moisture content ratio of 70% or less. To achieve the objective of the present invention, the sludge drying system comprises: a relay hopper unit that receives, from a filter press, wastewater and purified-water sludge in the form of dewatered cake, and temporarily stores same; an air supply unit that supplies air; an ejector unit that supplies the air introduced from the air supply unit to the sludge introduced from the relay hopper unit and sprays same by increasing a flow rate; a drying unit that swirls and flows the sludge and air introduced from the ejector unit and dries same; and a control unit that controls the operations of the relay hopper unit, the air supply unit, the ejector unit, and the drying unit.

Description

슬러지 건조시스템Sludge Drying System
본 발명은 슬러지 건조시스템에 관한 것으로서, 보다 구체적으로는 함수율이 70% 이하인 저함수율의 슬러지도 안정적으로 주입하여 건조가 가능한 슬러지 건조시스템에 관한 것이다.The present invention relates to a sludge drying system, and more particularly, to a sludge drying system capable of stably injecting and drying sludge having a low moisture content of 70% or less.
국내에서 산업체가 운영하는 오폐수처리장에서 연간 발생하는 산업 폐수 슬러지 및 축산 분뇨 등은 해양오염문제로 인해 해양투기는 전면 금지되어 있다.Marine dumping of industrial wastewater sludge and livestock manure generated annually at wastewater treatment plants operated by domestic industries is completely prohibited due to marine pollution problems.
따라서, 이와 같은 각종 슬러지의 처리문제를 해결하기 위해서 먼저 총발생량을 감축할 필요성이 있으며, 무엇보다 슬러지 중량의 대부분을 차지하는 수분 저감이 대단히 중요하다.Therefore, in order to solve the problem of treating various types of sludge, it is necessary to first reduce the total amount generated, and above all, reduction of moisture, which accounts for most of the sludge weight, is very important.
대부분의 하수를 포함한 오폐수처리공정은 최종 공정기술인 탈수공정으로 이루어져 있는데, 기계적인 탈수장치로 슬러지 내의 수분 중에 자유수 일부를 필터프레스를 통해 분리시켜 약 80~85%의 함수율을 가지는 케이크 형태로 배출시킨다.Most of the wastewater treatment process, including sewage, consists of the dehydration process, which is the final process technology. A mechanical dehydration device separates some of the free water from the moisture in the sludge through a filter press and discharges it in the form of a cake with a moisture content of about 80 to 85%. let it
한편, 종래 슬러지 건조 시스템은 대부분은 함수율이 70% 이상인 젖은 슬러지를 건조하기 위한 시스템으로, 슬러지 함수율이 높아 슬러지 원료를 주입하여 압송하기 위한 장치로써 모노 펌프나 피스톤 펌프가 주를 이루고 있다.On the other hand, most of the conventional sludge drying systems are systems for drying wet sludge having a water content of 70% or more, and a mono pump or a piston pump is mainly used as a device for injecting and pumping sludge raw materials due to high sludge moisture content.
그러나, 이와 같은 종래 슬러지 건조 시스템의 압송방식인 모노 펌프나 피스톤 펌프는 함수율이 70% 이상의 높은 수분을 함유한 슬러지의 경우에만 주입이 가능하며 함수율이 70% 이하인 저함수율의 슬러지에는 적합하지 않다.However, the mono pump or piston pump, which is a pressure-feeding method of the conventional sludge drying system, can be injected only in the case of sludge containing high moisture content of 70% or more and is not suitable for sludge with low moisture content of 70% or less.
따라서, 함수율이 70% 이하인 저함수율의 슬러지도 모노 펌프나 피스톤 펌프와 같은 특별한 동력 없이도 건조시스템으로 원료인 슬러지를 안정적으로 주입하기 위한 슬러지 건조 시스템 개발이 무엇보다도 필요하다 하겠다.Therefore, it is necessary above all to develop a sludge drying system for stably injecting sludge as a raw material into a drying system even for sludge with a low water content of 70% or less without special power such as a mono pump or a piston pump.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 함수율이 70% 이하인 저함수율의 슬러지도 원료인 슬러지를 안정적으로 주입하여 건조가 가능한 슬러지 건조시스템를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and an object of the present invention is to provide a sludge drying system capable of stably injecting and drying sludge, which is a raw material even for sludge with a low water content of 70% or less.
또한, 유입되는 슬러지의 상태, 입자의 크기 및 농도에 따라 분리기의 적용을 원활하게 할 수 있도록 하는 슬러지 건조시스템를 제공하고자 하는데도 그 목적이 있다.In addition, it is also an object to provide a sludge drying system that can smoothly apply a separator according to the state of the inflow sludge, the size and concentration of particles.
이와 함께 본 발명의 기타 목적 및 장점들은 하기에 설명될 것이며, 이는 본 발명의 청구범위에 기재된 사항 및 그 실시예의 개시 내용뿐만 아니라, 이들로부터 용이하게 추고할 수 있는 범위 내의 수단 및 조합에 의해 더욱 넓은 범위로 포섭될 것임을 첨언한다.Along with this, other objects and advantages of the present invention will be described below, which will be further explained by means and combinations within the scope easily deduced from them, as well as the details described in the claims of the present invention and the disclosure of the embodiments thereof. It is added that it will be embraced in a wide range.
상술한 목적을 달성하기 위한 본 발명은, 폐수 및 정수 슬러지를 필터 프레스로부터 탈수 케이크 형태로 공급받아 이를 일시 저장하는 중계호퍼부, 공기를 공급하는 공기공급부, 상기 중계호퍼부로부터 유입되는 슬러지에 상기 공기공급부로부터 유입되는 공기를 공급하고 유속을 증가시켜 분사하는 이젝터부, 상기 이젝터부로부터 유입되는 슬러지 및 공기를 선회 유동시켜 건조시키는 건조부, 상기 건조부로부터 건조된 슬러지를 저장하는 건조슬러지 보관부 및 상기 중계호퍼부, 공기공급부, 이젝터부 및 건조부 동작을 제어하는 제어부를 포함하는 슬러지 건조시스템에 있어서, 상기 필터 프레스와 중계호퍼부 사이에는, 상기 필터 프레스로부터 폐수 및 정수 슬러지를 탈수 케이크 형태로 공급받아 일측으로 이송시키는 이송컨베이어를 포함하고, 상기 중계호퍼부는, 레벨 센서와, 상기 레벨 센서에 의해 동작하는 것으로, 유입 슬러지를 평탄화하는 믹서 및 상기 믹서 하부에 위치하며 유입 슬러지를 파쇄 및 이송시키는 이송스크류를 포함하고, 상기 공기공급부는, 대기로 부터 유입된 공기를 일정 압력으로 공급하는 송풍기, 및 대기로 부터 유입된 공기에 스팀을 인가하여 일정 온도로 상승시킨 다음, 상기 송풍기와 이젝터부 사이로 공급하는 열교환기를 포함하고, 상기 건조부는, 복수 개의 사이클론 분리기를 더 포함하되, 최후단 사이클론 분리기에는, 복수 개의 미세분무 노즐과 일반분사 노즐을 포함하여 구성되어 슬러지의 상태, 입자의 크기 및 농도에 따라 건식 또는 건습식 혼용방식을 선택적으로 적용하여 운용이 가능한 것을 특징으로 한다.The present invention for achieving the above object is a relay hopper unit for receiving wastewater and purified water sludge in the form of a dewatering cake from a filter press and temporarily storing them, an air supply unit for supplying air, and the sludge flowing from the relay hopper unit. An ejector unit that supplies air introduced from the air supply unit and sprays the air by increasing the flow rate, a drying unit that dries the sludge and air flowing from the ejector unit in a swirling flow, and a dried sludge storage unit that stores the dried sludge from the drying unit And in the sludge drying system including a control unit for controlling the operation of the relay hopper unit, the air supply unit, the ejector unit, and the drying unit, between the filter press and the relay hopper unit, wastewater and clean water sludge from the filter press are dehydrated in the form of a cake It includes a transfer conveyor for receiving and transporting to one side, and the relay hopper unit, a level sensor, operated by the level sensor, and a mixer for flattening the inflow sludge and located below the mixer, crushing and transporting the inflow sludge The air supply unit includes a blower for supplying air introduced from the atmosphere at a constant pressure, and steam is applied to the air introduced from the atmosphere to raise the temperature to a predetermined temperature, and then the blower and the ejector unit and a heat exchanger supplied therebetween, and the drying unit further includes a plurality of cyclones, but the last cyclone separator includes a plurality of fine spray nozzles and a general spray nozzle, so that the sludge state, particle size and concentration It is characterized in that it is possible to operate by selectively applying a dry or wet and dry mixed method according to.
본 발명의 바람직한 실시예에 의하면, 상기 건조부에는, 상기 건조부로부터 건조시 발생되는 습공기 및 더스트를 처리하기 위한 세정식 스크러버를 더 포함하는 것을 특징으로 한다.According to a preferred embodiment of the present invention, the drying unit may further include a cleaning scrubber for treating wet air and dust generated during drying from the drying unit.
그리고, 상기 이송컨베이어는, 상기 중계호퍼부, 공기공급부, 이젝터부 및 건조부 중 어느 하나가 비정상적 가동에 의한 비상시라고 판단이 될 경우, 상기 제어부로부터 신호를 인가받아 상기 탈수 케이크를 타측으로 이송시키도록 이송스크류를 역회전한 다음, 별도의 탈수 케이크 보관부로 배출되도록 하는 것을 특징으로 한다.And, when it is determined that any one of the relay hopper unit, air supply unit, ejector unit, and drying unit is in an emergency due to abnormal operation, the transfer conveyor receives a signal from the control unit to transfer the dehydrated cake to the other side. After reverse rotation of the transfer screw, it is characterized in that it is discharged to a separate dewatering cake storage unit.
또한, 상기 이젝터부에는, 슬러지가 유입되는 슬러지 유입관 측면에 구비되는 것으로, 공기실린더와, 상기 공압실린더에 연동하는 파쇄봉으로 구성된 파쇄수단을 더 포함하고, 상기 공압실린더는 상기 제어부에 의해 동작이 제어되는 것을 특징으로 한다.In addition, the ejector unit is provided on the side of the sludge inlet pipe into which the sludge flows, and further includes a crushing means composed of an air cylinder and a crushing rod interlocked with the pneumatic cylinder, and the pneumatic cylinder is operated by the control unit It is characterized in that this is controlled.
상기와 같은 구성에 의한 본 발명의 효과는 다음과 같다.Effects of the present invention by the configuration as described above are as follows.
종래 모노 펌프나 피스톤 펌프와 같이 큰 동력을 필요로 하지 않으면서 저함수율 슬러지를 연속적으로 주입을 할 수 있어 에너지 측면에서 매우 효율적인 건조시스템 구현이 가능하다.It is possible to implement a very efficient drying system in terms of energy because it is possible to continuously inject low-moisture sludge without requiring large power like a conventional mono pump or piston pump.
그리고, 음압 이젝터 방식에 의해 발생하는 압력과 유속에 의해 원료인 슬러지의 연속적인 주입과 분사가 가능함과 동시에 파쇄가 되므로 70% 이하의 저함수율 슬러지용으로 매우 적합하며, 아울러 별도 구비된 공기압식 파쇄봉에 의해 장치의 작동 신뢰성 확보가 가능하다.In addition, the pressure and flow rate generated by the negative pressure ejector method enable continuous injection and injection of sludge as a raw material and crushing at the same time, so it is very suitable for sludge with a low moisture content of 70% or less. In addition, pneumatic crushing provided separately It is possible to secure the operation reliability of the device by the rod.
또한, 건조부의 최후단 사이클론 분리기에 습식의 분리세정기능을 더 포함하도록 하여 전체 슬러지 건조시스템을 건식 또는 건습식 혼용방식을 선택적으로 적용가능하게 함으로써 유입되는 슬러지의 상태, 입자의 크기 및 농도에 따라 분리기의 적용을 원활하게 할 수가 있게 된다.In addition, the final cyclone separator of the drying unit further includes a wet separation and washing function, so that the entire sludge drying system can be selectively applied to a dry or wet and dry mixed method, depending on the state of the inflow sludge, particle size and concentration. It is possible to smoothly apply the separator.
도 1은 본 발명의 바람직한 실시예에 따른 슬러지 건조시스템을 나타내는 구성도이다.1 is a block diagram showing a sludge drying system according to a preferred embodiment of the present invention.
도 2는 본 발명의 이젝터를 나타내는 구성도이다.2 is a configuration diagram showing the ejector of the present invention.
도 3은 본 발명의 이젝터에 대한 유동해석 결과를 나타낸 도면이다.3 is a view showing the flow analysis results for the ejector of the present invention.
도 4는 본 발명에 따른 습식의 분리세정기능이 포함된 건조부의 최후단 사이클론 분리기를 나타내는 도면으로 (a) 정면도이며, (b)는 평면도이다.Figure 4 is a view showing a cyclone separator at the end of the drying unit including a wet separation and cleaning function according to the present invention, (a) is a front view, and (b) is a plan view.
이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예를 상세하게 설명하고자 한다. 하기 설명 및 첨부 도면에 나타난 바는 본 발명의 전반적인 이해를 위해 제시된 것이므로 본 발명의 기술적 범위가 그것들에 한정되는 것은 아니다. 그리고 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 구성 및 기능에 대한 상세한 설명은 생략하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the bar shown in the following description and accompanying drawings is presented for a general understanding of the present invention, the technical scope of the present invention is not limited thereto. In addition, detailed descriptions of well-known configurations and functions that may unnecessarily obscure the gist of the present invention will be omitted.
이하, 슬러지 내의 수분 중에 자유수 일부를 기계적인 탈수장치인 필터 프레스를 통해 분리시켜 탈수 케이크(cake) 형태로 공급받는 것으로 하여 본 발명의 바람직한 실시예에 대하여 구체적으로 설명하고자 한다.Hereinafter, a preferred embodiment of the present invention will be described in detail assuming that a portion of free water in the sludge is separated through a filter press, which is a mechanical dehydration device, and supplied in the form of a dewatering cake.
도 1은 본 발명의 바람직한 실시예에 따른 슬러지 건조시스템을 나타내는 구성도이며, 도 2는 본 발명의 이젝터를 나타내는 구성도이며, 도 3은 본 발명의 이젝터에 대한 유동해석 결과를 나타낸 도면이다.1 is a configuration diagram showing a sludge drying system according to a preferred embodiment of the present invention, FIG. 2 is a configuration diagram showing an ejector of the present invention, and FIG. 3 is a diagram showing flow analysis results for the ejector of the present invention.
본 발명의 슬러지 건조시스템은 도시된 바와 같이, 크게 중계호퍼부(200), 공기공급부(300), 이젝터부(400), 건조부(500), 건조슬러지 보관부(600) 및 상기 중계호퍼부, 공기공급부, 이젝터부 및 건조부 동작하는 제어하는 제어부(700)를 포함하고, 상기 필터프레스와 중계호퍼부 사이에는 이송컨베이어(100), 그리고 상기 건조부에는 세정식 스크러버(800)를 포함하여 구성된다.As shown in the sludge drying system of the present invention, the relay hopper part 200, the air supply part 300, the ejector part 400, the drying part 500, the dried sludge storage part 600, and the relay hopper part , A control unit 700 for controlling the operation of an air supply unit, an ejector unit, and a drying unit, a transfer conveyor 100 between the filter press and the relay hopper unit, and a cleaning scrubber 800 in the drying unit, It consists of
먼저, 상기 이송컨베이어(100)는 폐수 및 정수 슬러지로부터 필터 프레스에 의해 탈수 케이크 형태로 만들어진 슬러지(이하 '슬러지'라 함)를 상부측으로 공급받아서 상기 중계호퍼부(200)로 공급하기 위한 것으로, 제어부(700)에 연결되는 구동모터에 의해 동작하는 이송스크류(110)를 포함한다.First, the transfer conveyor 100 is supplied to the upper side of sludge (hereinafter referred to as 'sludge') made in the form of a dewatering cake by a filter press from wastewater and purified water sludge and supplied to the relay hopper unit 200, A transfer screw 110 operated by a driving motor connected to the control unit 700 is included.
상기 이송컨베이어(100)의 하부 일측과 타측에는 에어실린더에 의해 개폐가 가능한 슬라이드 게이트가 구비된 배출구(120, 130)가 각각 구비되어 있으며, 정상 작동시에는 상기 일측 배출구(120)을 통하여 슬러지를 상기 중계호퍼부(200) 상부측으로 공급하게 되며, 후술하는 바와 같이 비상 정지시에는 제어부(700)로부터 역회전 신호를 입력받아 역회전하는 구동모터에 의해 상기 이송스크류(110)도 역회전하여 타측 배출구(130)를 통하여 슬러지를 배출하게 된다. Discharge ports 120 and 130 equipped with slide gates that can be opened and closed by air cylinders are provided on one side and the other side of the lower portion of the transfer conveyor 100, respectively, and sludge is discharged through the one side outlet 120 during normal operation. As will be described later, during an emergency stop, the transfer screw 110 is also reversely rotated by a drive motor that receives a reverse rotation signal from the control unit 700 and rotates in reverse, as will be described later. The sludge is discharged through the outlet 130.
상기 중계호퍼부(200)는 상기 이송컨베이어(110)로부터 슬러지를 공급받아 이를 일시적으로 저장하기 위한 것으로, 제어부(700)에 연결된 구동모터에 의해 동작하는 믹서(Mixer), 보다 바람직하게는 리본 믹서(Ribbon Mixer, 220)와, 상기 리본 믹서 하부측에 위치하며 역시 상기 제어부(700)에 연결된 구동모터에 의해 동작하는 이송스크류(240)를 포함하여 구성된다.The relay hopper unit 200 is for receiving sludge from the transfer conveyor 110 and temporarily storing it, a mixer operated by a drive motor connected to the control unit 700, more preferably a ribbon mixer (Ribbon Mixer, 220) and a transfer screw 240 located below the ribbon mixer and operated by a drive motor connected to the control unit 700.
여기서, 상기 리본 믹서(220)는 나선형으로 되어있는 리본형태의 임펠러(impeller)가 부착되어 가동되는 혼합용 기기로서, 보다 구체적으로, 외측리본과 내측리본이 정방향과 역방향으로 회전하여 상반되는 상하운동에 슬러지가 혼합되도록 하여 유입된 슬러지가 일차 분쇄되면서 평탄화가 가능하다.Here, the ribbon mixer 220 is a mixing device in which a spiral ribbon-type impeller is attached and operated. More specifically, the outer ribbon and the inner ribbon rotate in the forward and reverse directions to create opposite vertical movements. It is possible to flatten the introduced sludge by first crushing it by mixing the sludge into the sludge.
한편, 상기 중계호퍼부(200) 상부측에는 별도의 레벨 센서(Level Sensor, 210)가 구비되어 유입되는 슬러지의 표면까지의 거리를 초음파로 센싱하여 제어부(700)로 송출하고, 상기 제어부(700)로부터 신호를 입력받아 구동모터가 동작을 함에 따라 상기 리번 믹서(220)가 동작을 하게 된다.On the other hand, a separate level sensor (Level Sensor, 210) is provided on the upper side of the relay hopper unit 200 to sense the distance to the surface of the incoming sludge with ultrasonic waves and send it to the control unit 700, and the control unit 700 As the drive motor operates by receiving a signal from the above, the revane mixer 220 operates.
상기 리본 믹서(220)에 의해 분쇄되는 슬러지는 하부측 이송스크류(240)에 일측 방향으로 이송되어 배출되게 되며, 이렇게 배출되는 슬러지는 별도의 정량공급컨베이어(260)에 의해 일정량씩 이송되어 후술하는 이젝터부(400)로 공급되게 된다.The sludge crushed by the ribbon mixer 220 is transported in one direction to the lower conveying screw 240 and discharged, and the sludge discharged in this way is transported by a certain amount by a separate quantitative supply conveyor 260 to be described later. It is supplied to the ejector unit 400.
다음으로, 공기공급부(300)는 상기 이젝터부(400)로 슬러지 건조에 필요한 공기를 외부로부터 공급하기 위한 것으로, 대기로 부터 유입된 공기를 일정 압력으로 공급하는 송풍기(320)와, 대기로 부터 유입된 공기를 가열하여 일정 온도, 바람직하게는 약 100℃ 정도의 온도로 상승시킨 다음, 상기 송풍기(320)와 이젝터부(400) 사이로 공급하는 열교환기(340)를 포함하여 구성된다.Next, the air supply unit 300 is for supplying air necessary for drying the sludge to the ejector unit 400 from the outside, and a blower 320 for supplying air introduced from the atmosphere at a certain pressure, and from the atmosphere It is configured to include a heat exchanger 340 that heats the introduced air to raise it to a certain temperature, preferably about 100° C., and then supplies it between the blower 320 and the ejector unit 400.
즉, 상기 송풍기에 의해 외부로부터 공기를 일정 압력으로 공급하고, 여기에 열교환기, 바람직하게는 스팀 열교환기를 통하여 가령된 공기는 별도 라인을 통하여 가열된 공기와 합쳐지도록 하여 후술하는 이젝터부(400)로 일정 온도 이상의 공기를 공급하게 되는데, 그 결과 이젝터부(400)로 공급되는 슬러지에 일정 온도 이상의 온도로 공급되는 공기에 의해 슬러지의 함수율이 낮아지는 효과가 있게 된다.That is, air is supplied at a certain pressure from the outside by the blower, and the air received through a heat exchanger, preferably a steam heat exchanger, is combined with the heated air through a separate line to form an ejector unit 400 to be described later. As a result, the water content of the sludge is lowered by the air supplied to the sludge at a temperature higher than a certain temperature.
본 발명의 바람직한 실시예에 따르면, 상기 이젝터부(400)는 공기공급부(300)로부터 유입되는 공기의 유속을 증폭시켜 상기 중계호퍼부(200)로부터 유입되는 슬러지를 파쇄하면서 입자화시켜 건조부(500)로 배출되도록 하는 기능을 수행하게 된다.According to a preferred embodiment of the present invention, the ejector unit 400 amplifies the flow rate of air introduced from the air supply unit 300 and crushes the sludge introduced from the relay hopper unit 200 into particles while crushing the drying unit ( 500) to perform the function of discharging.
이와 같은 상기 이젝터부(400)는, 도 2에 도시된 바와 같이, 공기공급부(300)로부터 공기가 유입되는 공기유입관(410), 상기 공기유입관(410)과 연결되며 일정구간 단면이 축소된 유속 가속부(420)가 구비되는 공기 및 슬러지 배출관(430), 그리고 상기 유속 가속부(420)와 수직되게 결합되며 상기 중계호퍼부(200)로부터 공급되는 슬러지가 유입되는 슬러지 유입관(440)을 포함하여 구성된다.As shown in FIG. 2, the ejector unit 400 is connected to the air inlet pipe 410 through which air flows from the air supply unit 300 and the air inlet pipe 410, and has a reduced cross-section in a certain section. An air and sludge discharge pipe 430 equipped with a flow rate accelerating unit 420, and a sludge inlet pipe 440 vertically coupled to the flow rate accelerating unit 420 and into which the sludge supplied from the relay hopper unit 200 flows ) is composed of.
이와 같이 구성된 이젝터부(400)에 의하면, 상기 리듀서(Reducer) 형상의 공기유입관(410)을 거쳐 유속 가속부(420)에 의해 유입되는 공기의 유속이 증폭되면서 압력이 상대적으로 낮게 형성되는, 소위 음압에 의해 슬러지가 슬러지 유입관(440)을 통하여 유입되게 되는데, 본 발명의 바람직한 실시예에 따르면, 상기 공기유입관(410)의 최소 직경은, 상기 슬러지 유입관(440)의 최소 직경과 동일한 크기로 형성되는 것이 바람직하다.According to the ejector unit 400 configured as described above, the flow rate of the air introduced by the flow acceleration unit 420 through the reducer-shaped air inlet pipe 410 is amplified while the pressure is relatively low. Sludge is introduced through the sludge inlet pipe 440 by so-called negative pressure. According to a preferred embodiment of the present invention, the minimum diameter of the air inlet pipe 410 is the minimum diameter of the sludge inlet pipe 440 and It is desirable that they are formed in the same size.
도 3은 아래 [표 1]와 같은 조건에서 유동해석한 결과를 도시한 것으로, 공기유입관(410)의 최소 직경을 140mm로 하고, 또한 슬러지 유입관(440)의 최소 직경을 이와 동일한 치수로 하여 입구 유량을 달리하여 유동해석한 결과를 나타낸 도 3의(a) 및 도 3의 (b)에서 보듯이 공기의 유속이 증폭되면서 음압이 크게 형성된 결과를 확인할 수 있다.Figure 3 shows the results of flow analysis under the same conditions as in [Table 1] below, the minimum diameter of the air inlet pipe 410 is 140 mm, and the minimum diameter of the sludge inlet pipe 440 is the same size As shown in FIG. 3 (a) and FIG. 3 (b), which show the results of flow analysis by varying the inlet flow rate, it can be seen that the flow rate of air is amplified, resulting in a large negative pressure.
공기유입관
최소 직경(mm)air inlet pipe
Minimum diameter (mm) 		입구유량
(m3/min)inlet flow
(m3/min) 		outlet 조건(mmAq)outlet conditions (mmAq) 슬러지 유입관 유량(m3/min)Sludge inlet pipe flow rate (m3/min) 이젝터 ΔP
(mmAq)Ejector ΔP
(mmAq)
140140 330330 3,3003,300 60.65(흡입)60.65 (inhalation) 4,6764,676
140140 280280 3,3003,300 19.19(흡입)19.19 (inhalation) 2,8912,891
따라서, 본 발명의 경우 종래 모노 펌프나 피스톤 펌프와 같이 큰 동력을 필요로 하지 않고 유속을 증폭시켜 상기 중계호퍼부(200)로부터 유입되는 슬러지를 파쇄하면서 입자화시켜 후단부 건조부(500)로 원료인 슬러지의 연속적인 주입과 분사가 가능하게 된다.Therefore, in the case of the present invention, the sludge flowing from the relay hopper part 200 is crushed and granulated by amplifying the flow rate without requiring large power like the conventional mono pump or piston pump, and then to the drying part 500 at the rear end Continuous injection and injection of sludge, which is a raw material, is possible.
이와 같은 상기 이젝터부(400)에 의해 공급되는 슬러지가 파쇄되면서 입자화되어 슬러지의 건조 표면적을 확대시키게 되는 효과가 발생되고, 여기에 더하여 본 발명의 경우 공기공급부(300)의 열교환기(340)에 의해 일정 온도 이상의 가열된 공기를 상기 이젝터부(400)에 의해 건조 표면적이 확대된 슬러지에 공급되도록 함으로써 상대적으로 함수율을 더 떨어지도록 하는 효과도 발생되게 된다.As the sludge supplied by the ejector unit 400 is crushed and granulated, an effect of expanding the dry surface area of the sludge occurs, and in addition to this, in the case of the present invention, the heat exchanger 340 of the air supply unit 300 By supplying air heated at a certain temperature or higher by the ejector unit 400 to the sludge having an enlarged drying surface area, an effect of relatively lowering the moisture content is also generated.
한편, 도 2에 도시된 바와 같이 본 발명의 이젝터부(400)에는, 슬러지 유입관(440)의 측면에 공기실린더(482) 및 상기 공압실린더에 연동하는 파쇄봉(484)으로 구성된 파쇄수단(480)을 더 포함하여 구성된다.On the other hand, as shown in FIG. 2, in the ejector unit 400 of the present invention, a crushing means composed of an air cylinder 482 on the side of the sludge inlet pipe 440 and a crushing rod 484 linked to the pneumatic cylinder ( 480) is further included.
여기서, 상기 공압실린더(482)는 제어부(700)에 의해 동작이 제어되며, 상기 공압실린더(482)에 의해 연동하는 파쇄봉(484)이 주기적 또는 간헐적으로 길이방향으로 신축가능하게 된다. Here, the operation of the pneumatic cylinder 482 is controlled by the control unit 700, and the crushing rod 484 interlocked by the pneumatic cylinder 482 can be periodically or intermittently stretched in the longitudinal direction.
도시된 바와 같이, 본 발명의 이젝터부(400)의 경우, 편락관 형태의 슬러지 유입관(440)이 일정구간 단면이 축소된 유속 가속부(420)에 수직하게 설치되는데, 이때 상기 슬러지 유입관(440)으로 큰 슬러지가 걸려서 유입이 되지 않을 경우에 공압실린더(482)에 의해 상기 파쇄봉(484)이 길이방향으로 이동시키게 되면, 그 결과 파쇄봉(484)에 의해 걸려 있던 슬러지가 파쇄되면서 유입되게 되므로 음압이 발생되지가 않아 이젝터 기능이 구현되지 않는 문제점을 근본적으로 해결할 수가 있게 된다.As shown, in the case of the ejector unit 400 of the present invention, the sludge inlet pipe 440 in the form of a piece pipe is installed perpendicular to the flow rate acceleration part 420 with a reduced cross section for a certain period. At this time, the sludge inlet pipe When the crushing rod 484 is moved in the longitudinal direction by the pneumatic cylinder 482 when large sludge is caught in 440 and does not flow, as a result, the sludge caught by the crushing rod 484 is crushed Since it is introduced, it is possible to fundamentally solve the problem that the ejector function is not implemented because the negative pressure is not generated.
이렇게 하여, 상기 이젝터부(400)를 통과한 슬러지는 공기와 함께 선회 유동시켜 건조시키는 사이클론 건조기로 된 건조부(500)를 거치게 되며, 상기 건조부(500)는 슬러지의 함수율을 추가적으로 낮추기 위하여 건식의 분리포집기능을 구비한 복수 개의 사이클론 분리기(520, 540)가 상호 연결된 형태로 이루어지는 것이 바람직하다.In this way, the sludge that has passed through the ejector unit 400 passes through a drying unit 500 made of a cyclone dryer for drying by rotating and flowing with air, and the drying unit 500 is a dry type to further lower the moisture content of the sludge. It is preferable that a plurality of cyclone separators 520 and 540 having a separation and collection function of are connected to each other.
즉, 상기 이젝터부(400)를 통과한 슬러지는 제1 사이클론 건조기(520)로 유입되고, 공기와 함께 유입된 슬러지의 일부는 공기와 분리되어 하부측으로 집결되고 나머지 공기는 상부측으로 배출되어 제2 사이클론 건조기(540)를 순차적으로 거치면서 최종 슬러지와 공기가 분리가 된다. That is, the sludge that has passed through the ejector unit 400 is introduced into the first cyclone dryer 520, a part of the sludge introduced together with the air is separated from the air and gathered to the lower side, and the remaining air is discharged to the upper side and the second While passing through the cyclone dryer 540 sequentially, the final sludge and air are separated.
여기서, 상기 복수 개의 사이클론 건조기(520, 540)를 2개로 한정하여 설명하고 있으나, 이는 하나의 예시일 뿐 필요에 따라서 그 개수는 함수율 등을 고려하여 3개 내지 4개로 가변될 수 있음은 물론이다.Here, although the plurality of cyclone dryers 520 and 540 are limited to two and described, this is only an example, and the number can be varied to three or four if necessary in consideration of moisture content, etc. Of course .
한편, 본 발명의 바람직한 실시예에 따르면, 상기 복수 개의 사이클론 건조기(520, 540)의 후단측에는 제1 사이클론 분리기(560) 및 제2 사이클론 분리기(580)를 더 포함하여 건조부(500)를 구성할 수가 있다.Meanwhile, according to a preferred embodiment of the present invention, a first cyclone separator 560 and a second cyclone separator 580 are further included at the rear end of the plurality of cyclone dryers 520 and 540 to configure the drying unit 500. I can.
이렇게 하여, 구성된 상기 건조부(500)의 후단측에 위치하는 사이클론 분리기, 바람직하게는 제1 및 제2 사이클론 분리기(560, 580)의 하부측에 집결된 슬러지는, 배출컨베이어(590)를 거쳐 건조슬러지 보관부(600)로 보내져 보관되게 되며, 이때 상기 건조슬러지 보관부(600)는 통상 이동성을 용이하게 하기 위하여 컨테이너 차량에 탑재가 가능한 컨테이너 형태인 것이 바람직하다.In this way, the sludge collected in the lower side of the cyclone separator located at the rear end of the drying unit 500, preferably the first and second cyclones separators 560 and 580, passes through the discharge conveyor 590. It is sent to the dry sludge storage unit 600 and stored. At this time, the dry sludge storage unit 600 is preferably in the form of a container that can be mounted on a container vehicle to facilitate normal mobility.
그리고, 상기 건조부(500)의 최후단인 상기 제2 사이클론 분리기(580)에는, 별도의 세정식 스크러버(Scrubber, 800)가 연결되어 상기 건조부(500)로부터 건조시 발생되는 습공기 및 더스트를 처리하게 된다.In addition, a separate scrubber 800 is connected to the second cyclone separator 580, which is the last stage of the drying unit 500, to remove wet air and dust generated during drying from the drying unit 500. will be processed
상기 세정식 스크러버(800), 분진제거용 포그 펌프(820)로 공급된 용수를 분사하는 미세분무 노즐(850)과 수조에 설치된 세정수 펌프(830)로 공급된 용수를 상부측에서 분사하는 일반분사 노즐(840)의 2단 구조로 구성되게 된다.A fine spray nozzle 850 spraying water supplied to the cleaning scrubber 800 and the fog pump 820 for dust removal, and a general spraying water supplied to the washing water pump 830 installed in the water tank from the upper side. It is composed of a two-stage structure of the injection nozzle 840.
여기서, 상기 미세분무 노즐(850)에 의해 분무되는 약 70미크론이하의 미세 액적들에 의해 공기 중에 포함된 습공기 및 더스트를 포집하여 최종 드레인 펌프(860)을 통해 배출하게 되고, 상기 일반분사 노즐(840)에 의해 분사되는 100미크론 이상의 분진들을 제거하거나 세정식 스크러버 내부에 스케일로 응집되는 것을 방지하기 위하여 연속적으로 세정한 다음 역시 드레인 펌프(860)을 통해 배출하게 된다.Here, wet air and dust contained in the air are collected by the fine droplets of about 70 microns or less sprayed by the fine spray nozzle 850 and discharged through the final drain pump 860, and the general spray nozzle ( 840) to remove the dust of 100 microns or more or to prevent aggregation into scale inside the cleaning scrubber, it is continuously cleaned and then discharged through the drain pump 860 as well.
본 발명이 바람직한 실시예에 따르면, 상기 이송컨베이어(110)는, 상기 중계호퍼부, 공기공급부, 이젝터부 및 건조부 중 어느 하나가 비정상적 가동에 의한 비상시라고 판단이 될 경우, 제어부(700)로부터 신호를 비상시라는 신호를 인가받아 탈수케이크를 타측으로 이송시키도록 이송스크류(110)를 역회전한 다음, 별도의 탈수케이크 보관부(900)로 배출되도록 구성될 수 있다.According to a preferred embodiment of the present invention, the transfer conveyor 110, when it is determined that any one of the relay hopper unit, air supply unit, ejector unit, and drying unit is in an emergency due to abnormal operation, from the control unit 700 It may be configured to receive a signal indicating an emergency, rotate the transfer screw 110 in reverse to transfer the dehydrated cake to the other side, and then discharge it to a separate dehydration cake storage unit 900.
따라서, 정상가동시에는 건조슬러지 보관부(600)로 최종 건조된 슬러지가 보관되도록 하고, 비정상적 가동시에는 별도의 탈수케이크 보관부(900)로 건조되지 아니한 슬러지를 보관되도록 하여 전체 시스템 운영에 차질이 없도록 하는 슬러지 건조시스템의 구현이 가능하게 된다.Therefore, during normal operation, the finally dried sludge is stored in the dry sludge storage unit 600, and during abnormal operation, the undried sludge is stored in a separate dewatering cake storage unit 900, so that the operation of the entire system is not disrupted. It is possible to implement a sludge drying system that does not
한편, 본 발명에 따르면, 상기 건조부(500)는 건식의 분리포집기능을 구비한 복수 개의 사이클론 건조기 및 분리기(520, 540, 560, 580)가 상호 연결된 형태로 구성되나, 최후단인 상기 제2 사이클론 분리기(580)는 습식의 분리세정기능을 더 포함하여 구성될 수 있다.Meanwhile, according to the present invention, the drying unit 500 is composed of a plurality of cyclone dryers and separators 520, 540, 560, and 580 having a dry separation and collection function connected to each other, but the last stage, the first The two-cyclone separator 580 may further include a wet separation and cleaning function.
도 4는 본 발명에 따른 습식의 분리세정기능이 포함된 건조부의 최후단 사이클론 분리기를 나타내는 도면으로 (a)는 정면도이며, (b)는 평면도이다.4 is a view showing a cyclone separator at the end of the drying unit including a wet separation and cleaning function according to the present invention, where (a) is a front view and (b) is a plan view.
도시된 바와 같이 상기 이젝터부로부터 유입되는 슬러지 및 공기를 선회 유동시켜 건조시키는 복수 개의 건조부에서 최후단 사이클론 분리기는, 건식의 분리포집기능을 가진 전단에 위치하는 사이클론 분리기(560)로부터 유입되는 습공기 및 더스트가 상부 측면에 구비되는 유입관(581)으로 들어오면 분리기 구조에 의해 상부에서 선회 유동을 하게 되고, 상부에 설치된 복수 개의 미세분무 노즐(582)에 의하여 분사되면서 발생되는 액적에 의하여 더스트가 제거되게 되는 습식의 분리세정기능이 적용가능 하도록 구성될 수 있다.As shown, the last cyclone separator in the plurality of drying units that swirls and flows the sludge and air introduced from the ejector unit to dry them, has a dry separation and collection function. And when the dust enters the inlet pipe 581 provided on the upper side, the separator structure causes a swirling flow at the upper part, and the dust is generated by the droplets sprayed by the plurality of fine spray nozzles 582 installed on the upper part. It may be configured so that the wet separation cleaning function to be removed is applicable.
상기 미세분무 노즐(582)에 의해 분무되는 약 70미크론이하의 미세 액적들은 건조시 미세한 더스트를 점착제거하여 원추형으로 된 사이클론 분리기의 하부로 선회 하강을 하며, 하부는 전환밸브(586)로써 막힘되어 있어 최종 드레인 배관(588)을 통하여 배출되며, 포집되지 아니한 습공기 및 더스트는 상부를 통해 세정식 스크러버(800)로 유입되게 된다.The fine droplets of about 70 microns or less sprayed by the fine spray nozzle 582 detach the fine dust when drying and rotate and descend to the lower part of the conical cyclone separator, and the lower part is blocked by the switching valve 586. It is discharged through the final drain pipe 588, and wet air and dust that are not collected are introduced into the cleaning scrubber 800 through the upper part.
여기서, 상기 미세분무 노즐(582)로 공급되는 용수는 별도의 포그 펌프(820)에서 공급되고 매우 깨끗한 시상수를 사용하게 된다.Here, the water supplied to the fine spray nozzle 582 is supplied from a separate fog pump 820 and a very clean time constant is used.
한편, 이와 별도로 내부에 구비되는 일반분사 노즐(584)은 분진들이 미세분사 노즐 및 분리기 내부에 스케일로 응집되는 것을 방지하기 위하여 연속적으로 세정하기 위한 수단으로, 그 세정수는 세정식 스크러버(800)의 수조에 설치되는 세정수 펌프(830)의 송배수관과 연결되어 세정수를 공급받을 수 있다.On the other hand, the general spray nozzle 584 provided inside is a means for continuously cleaning in order to prevent the dust from aggregating into scale inside the fine spray nozzle and separator, and the washing water is a cleaning scrubber 800 It is connected to the water supply pipe of the washing water pump 830 installed in the water tank to receive washing water.
따라서, 본 발명에 의하면, 평상시 최후단인 제2 사이클론 분리기(580)에 구비된 미세분무 노즐 및 일반분사 노즐을 사용하지 않는 건식방식으로 사용하다가, 필요시 분리기 하부에 설치된 전환밸브(586)를 닫아, 최후단 사이클론 분리기(580) 상부에 구비된 미세분무 노즐(582) 및 일반분사 노즐(584)을 가동하여 건식에서 습식 분리세정기능으로 전환하여 사용할 수가 있게 된다.Therefore, according to the present invention, the fine spray nozzle and the general spray nozzle provided in the second cyclone separator 580, which is the last stage, are used in a dry method, and when necessary, the switching valve 586 installed at the bottom of the separator is used. After closing, the fine spray nozzle 582 and the general spray nozzle 584 provided on the upper part of the last cyclone separator 580 are operated so that it can be used by switching from dry to wet separation cleaning function.
즉, 전단의 사이클론 분리기(560)는 건식으로, 그리고 최후단의 사이클론 분리기(580)는 습식으로 하여 건습식 혼용 방식으로 운용이 가능하게 되며, 따라서 사용자는 전체 슬러지 건조시스템을 건식 또는 건습식 혼용 방식을 선택적으로 적용가능하게 함으로써 유입되는 슬러지의 상태, 입자의 크기 및 농도에 따라 분리기의 적용을 원활하게 할 수가 있게 된다.That is, the front cyclone separator 560 is dry, and the last cyclone separator 580 is wet, so that it is possible to operate in a dry and wet mixed method, so the user can use the entire sludge drying system dry or dry wet By selectively applying the method, it is possible to smoothly apply the separator according to the state of the inflow sludge, the size and concentration of the particles.
그 결과, 본 발명에 의하면, 최후단인 제2 사이클론 분리기(580)를 건식으로 사용시에는 전단의 사이클론 분리기(560) 및 상기 제2 사이클론 분리기(580)를 통해 건조슬러지가 배출되게 되나, 최후단인 제2 사이클론 분리기(580)를 습식으로 사용시에는 전단의 사이클론 분리기(560)로만 건조슬러지가 배출되어 건조슬러지 보관부(600)로 배출되고, 여기서 미회수된 더스트는 제2 사이클론 분리기(580)의 복수 개의 미세분무 노즐(582) 및 일반분사 노즐(584)에 의하여 제거되어 분리기 하부의 별도의 최종 드레인 배관(588)을 통하여 배출되게 되는 것이다.As a result, according to the present invention, when the second cyclone separator 580, which is the last stage, is used as a dry type, dry sludge is discharged through the cyclone separator 560 and the second cyclone separator 580 at the front stage, but the last stage When the second cyclone separator 580 is used as a wet type, the dry sludge is discharged only through the cyclone separator 560 at the front end and discharged to the dry sludge storage unit 600, where the uncollected dust is the second cyclone separator 580 It is removed by a plurality of fine spray nozzles 582 and general spray nozzles 584 and discharged through a separate final drain pipe 588 under the separator.
상기에서 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 해당 기술 분야에서 통상의 지식을 가진 자라면, 하기의 특허청구범위에서 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.Although described above with reference to the preferred embodiments of the present invention, those skilled in the art will variously modify the present invention within the scope not departing from the spirit and scope of the present invention in the scope of the claims below. And it will be understood that it can be changed.

Claims (4)

  1. 폐수 및 정수 슬러지를 필터 프레스로부터 탈수 케이크 형태로 공급받아 이를 일시 저장하는 중계호퍼부, 공기를 공급하는 공기공급부, 상기 중계호퍼부로부터 유입되는 슬러지에 상기 공기공급부로부터 유입되는 공기를 공급하고 유속을 증가시켜 분사하는 이젝터부, 상기 이젝터부로부터 유입되는 슬러지 및 공기를 선회 유동시켜 건조시키는 건조부, 상기 건조부로부터 건조된 슬러지를 저장하는 건조슬러지 보관부 및 상기 중계호퍼부, 공기공급부, 이젝터부 및 건조부 동작을 제어하는 제어부를 포함하는 슬러지 건조시스템에 있어서,A relay hopper unit receiving wastewater and purified water sludge in the form of a dewatering cake from a filter press and temporarily storing them, an air supply unit supplying air, supplying air from the air supply unit to the sludge flowing from the relay hopper unit and controlling the flow rate An ejector unit that increases and sprays, a dryer unit that swirls and flows the sludge and air flowing from the ejector unit and dries them, a dried sludge storage unit that stores the sludge dried from the dryer unit, and the relay hopper unit, air supply unit, and ejector unit And in the sludge drying system comprising a control unit for controlling the operation of the drying unit,
    상기 필터 프레스와 중계호퍼부 사이에는, Between the filter press and the relay hopper unit,
    상기 필터 프레스로부터 폐수 및 정수 슬러지를 탈수 케이크 형태로 공급받아 일측으로 이송시키는 이송컨베이어를 포함하고,A transfer conveyor for receiving wastewater and purified water sludge from the filter press in the form of a dewatering cake and conveying them to one side;
    상기 중계호퍼부는, The relay hopper part,
    레벨 센서와, 상기 레벨 센서에 의해 동작하는 것으로, 유입 슬러지를 평탄화하는 믹서 및 상기 믹서 하부에 위치하며 유입 슬러지를 파쇄 및 이송시키는 이송스크류를 포함하고,A level sensor, a mixer that is operated by the level sensor and flattens the inflow sludge, and a conveying screw located below the mixer and crushing and transporting the inflow sludge,
    상기 공기공급부는,The air supply unit,
    대기로 부터 유입된 공기를 일정 압력으로 공급하는 송풍기, 및A blower that supplies air introduced from the atmosphere at a certain pressure, and
    대기로 부터 유입된 공기에 스팀을 인가하여 일정 온도로 상승시킨 다음, 상기 송풍기와 이젝터부 사이로 공급하는 열교환기를 포함하고,A heat exchanger that applies steam to air introduced from the atmosphere to raise the temperature to a certain temperature and then supplies it between the blower and the ejector unit;
    상기 건조부는, The drying unit,
    복수 개의 사이클론 분리기를 더 포함하되, 최후단 사이클론 분리기에는, 복수 개의 미세분무 노즐과 일반분사 노즐을 포함하여 구성되어 슬러지의 상태, 입자의 크기 및 농도에 따라 건식 또는 건습식 혼용방식을 선택적으로 적용하여 운용이 가능한 것을 특징으로 하는 슬러지 건조시스템.It further includes a plurality of cyclone separators, and the last cyclone separator includes a plurality of fine spray nozzles and a general spray nozzle to selectively apply dry or wet and dry mixed methods depending on the sludge state, particle size and concentration Sludge drying system, characterized in that the operation is possible.
  2. 제1항에 있어서,According to claim 1,
    상기 건조부에는, In the drying unit,
    상기 건조부로부터 건조시 발생되는 습공기 및 더스트를 처리하기 위한 세정식 스크러버를 더 포함하는 것을 특징으로 하는 슬러지 건조시스템.Sludge drying system, characterized in that it further comprises a cleaning scrubber for processing wet air and dust generated during drying from the drying unit.
  3. 제1항에 있어서,According to claim 1,
    상기 이송컨베이어는,The transfer conveyor,
    상기 중계호퍼부, 공기공급부, 이젝터부 및 건조부 중 어느 하나가 비정상적 가동에 의한 비상시라고 판단이 될 경우, 상기 제어부로부터 신호를 인가받아 상기 탈수 케이크를 타측으로 이송시키도록 이송스크류를 역회전한 다음, 별도의 탈수 케이크 보관부로 배출되도록 하는 것을 특징으로 하는 슬러지 건조시스템.When it is determined that any one of the relay hopper unit, air supply unit, ejector unit, and drying unit is in an emergency due to abnormal operation, a signal is received from the control unit and the transfer screw is reversely rotated to transfer the dehydrated cake to the other side. Next, the sludge drying system characterized in that it is discharged to a separate dewatering cake storage unit.
  4. 제1항에 있어서,According to claim 1,
    상기 이젝터부에는,In the ejector unit,
    슬러지가 유입되는 슬러지 유입관 측면에 구비되는 것으로, It is provided on the side of the sludge inlet pipe through which the sludge flows,
    공기실린더와, 상기 공압실린더에 연동하는 파쇄봉으로 구성된 파쇄수단을 더 포함하고, 상기 공압실린더는 상기 제어부에 의해 동작이 제어되는 것을 특징으로 하는 슬러지 건조시스템.The sludge drying system further comprises a crushing means composed of an air cylinder and a crushing rod interlocked with the pneumatic cylinder, wherein the operation of the pneumatic cylinder is controlled by the control unit.
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