WO2011094904A1 - 一种污泥风干装置 - Google Patents

一种污泥风干装置 Download PDF

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Publication number
WO2011094904A1
WO2011094904A1 PCT/CN2010/000283 CN2010000283W WO2011094904A1 WO 2011094904 A1 WO2011094904 A1 WO 2011094904A1 CN 2010000283 W CN2010000283 W CN 2010000283W WO 2011094904 A1 WO2011094904 A1 WO 2011094904A1
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WO
WIPO (PCT)
Prior art keywords
air
sludge
drying mechanism
air drying
dehumidification
Prior art date
Application number
PCT/CN2010/000283
Other languages
English (en)
French (fr)
Inventor
钟环声
吴学伟
吴嘉聪
孙志民
杨海英
Original Assignee
广州普得环保设备有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 广州普得环保设备有限公司 filed Critical 广州普得环保设备有限公司
Priority to US13/576,992 priority Critical patent/US9021716B2/en
Priority to KR2020127000043U priority patent/KR200478208Y1/ko
Priority to EP10844989.3A priority patent/EP2562140A4/en
Priority to JP2012600065U priority patent/JP3181483U/ja
Publication of WO2011094904A1 publication Critical patent/WO2011094904A1/zh

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • 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
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
    • F26B17/205—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined with multiple chambers, e.g. troughs, in superimposed arrangement
    • 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
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
    • 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
    • F26B21/08—Humidity
    • F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/20—Sludge processing

Definitions

  • This new type belongs to the field of sludge treatment equipment, and is specifically a sludge air drying device for low-energy drying treatment of sewage sludge.
  • the sewage treatment plant In the process of urban sewage treatment, a large amount of sludge is generated.
  • the sewage treatment plant generally only concentrates and dehydrates it, and the dewatered sludge with a moisture content of about 80% is usually disposed of by external transportation.
  • the dewatered sludge In order to effectively achieve sludge reduction and resource utilization, the dewatered sludge is generally dried first.
  • the sludge drying processes commonly used at home and abroad mainly include fluidized bed drying, multi-layer disc drying, film drying, paddle drying and belt drying, which dry the dewatered sludge directly or indirectly.
  • the purpose of the utility model is to provide a sludge air drying device with the disadvantages of the sludge drying process described above, providing low dry energy consumption, low tail gas pollution, low equipment investment, stable operation and high safety.
  • a sludge air drying device comprising at least one air dryer Structure, dosing mechanism and dehumidification heating mechanism,
  • the air drying mechanism comprises a main shaft, a reamer and a motor.
  • the output shaft of the motor is connected with the main shaft, and the motor drives the main shaft to rotate slowly.
  • the reamer is regularly mounted on the main shaft according to the conveying direction of the sludge, and the material is turned and broken. , moving function; the dosing mechanism is connected to the beginning of the air drying mechanism.
  • the air drying mechanism is provided with two sections, and the dosing mechanism is connected with the beginning end of the first air drying mechanism, the end of the first air drying mechanism is connected with the beginning end of the second air drying mechanism, and the discharging port is arranged above the connecting portion.
  • the end of the second air-drying mechanism is connected with the beginning of the first air-drying mechanism, so that the first air-drying mechanism and the second air-drying mechanism form a loop structure.
  • the dehumidification heating mechanism comprises a dehumidification and cold exchanger, an exhaust gas heat exchanger, a dehumidification heat exchanger, an air heater, a fan and a refrigeration compressor, the air inlet is connected with the dehumidification and cold exchanger, the dehumidification cold exchanger and the exhaust heat exchanger Connected, the exhaust heat exchanger is connected to the dehumidification heat exchanger through a blower, the dehumidification heat exchanger is connected to the air heater, and the condensate drain pipe is provided at the bottom of the dehumidification cold exchanger.
  • the dehumidification heating mechanism is disposed above the air drying mechanism, and the air heater outlet is connected with the air inlet of the air drying mechanism by a duct; the air outlet of the air drying mechanism is connected with the inlet end of the exhaust heat exchanger tube, and the air outlet of the exhaust pipe is collected.
  • the dosing mechanism comprises a sludge storage tank and a quantitative screw conveyor, and the quantitative screw conveyor is arranged below the sludge storage tank.
  • the utility model has the following advantages: First, high dynamic production stability and full automatic production can be realized; Second, cold and heat energy recovery settings in the dehumidification heating mechanism make the drying efficiency high and the energy consumption low; Third, the residence time of the sludge in the drying device is adjustable, so that the water is discharged. The rate is adjustable; the fourth is that the exhaust gas is discharged after cooling and discharging the condensed water, which reduces the tail gas treatment into a stroke; the fifth is that the produced sludge is loose granular, and the long-term storage will not be anaerobic and odorous, and is more conducive to sludge resources. Utilization.
  • FIG. 1 is a schematic block diagram of a sludge air drying device of the present invention
  • FIG. 2 is a schematic right side view of a sludge air drying device of the present invention.
  • FIG. 3 is a front view showing the structure of a sludge air drying device of the present invention.
  • FIG. 4 is a schematic view showing the structure of the A-A surface of the sludge air drying device of the present invention. detailed description
  • a sludge air drying mechanism includes at least one air drying mechanism, a dosing mechanism, and a dehumidification heating mechanism.
  • the air drying mechanism includes a casing, a main shaft, a reamer 4, and a motor, and an output shaft of the motor is coupled to the main shaft.
  • the motor drives the main shaft to rotate slowly.
  • the reamer 4 is regularly mounted on the main shaft according to the conveying direction of the sludge, and has the function of turning, breaking and moving the material; the dosing mechanism is connected with the beginning end of the air drying mechanism.
  • the air drying mechanism is provided with two sections, and the dosing mechanism is connected with the beginning end of the first air drying mechanism 5, and the end of the first air drying mechanism 5 and the beginning end of the second air drying mechanism 8 are communicated through the communication channel 7, at the communication channel 7
  • a discharge port 21 is disposed on the upper side, and an end of the second air-drying mechanism 8 communicates with the beginning end of the first air-drying mechanism 5, so that the first air-drying mechanism 5 and the second air-drying mechanism 8 form a loop structure.
  • the dosing mechanism is composed of a sludge storage tank 2 and a quantitative screw conveyor 3, and the quantitative screw conveyor 3 is disposed below the sludge storage tank 2.
  • the rotary conveyor 3 is conveyed into the beginning of the first section of the air drying mechanism 5, and the sludge dosage is adjusted by the rotation speed of the quantitative screw conveyor 3, and the dry sludge having a moisture content of 5% to 35% is used by the air-drying mechanism.
  • the amount of dry sludge to be fed is adjusted by the rotation speed of the quantitative screw conveyor 10 in the air drying mechanism.
  • the dehumidification heating mechanism includes a dehumidification and cold exchanger 12, an exhaust gas heat exchanger 13, a dehumidification heat exchanger 16, an air heater 17, a blower 15, and a refrigeration compressor 14, and the air inlet 11 is connected to the dehumidification and cold exchanger 12, and the dehumidification and cold exchanger is 12 is connected to the exhaust gas heat exchanger 13, and the exhaust gas heat exchanger 13 is connected to the dehumidifying heat exchanger 16 via a blower 15, an air heater 17 is disposed on the dehumidifying heat exchanger 16, and condensed water is provided at the bottom of the dehumidifying cold exchanger 12.
  • the discharge pipe 22 ⁇ The dehumidification heating mechanism is disposed above the first air drying mechanism 5, and the air heater outlet is connected by the pipe 19 with the air inlet 20 of the side or bottom of the air drying mechanism; the air drying mechanism upper cover exhaust port and the exhaust gas heat exchanger tube The inlet end is connected, and the condensate collecting pipe is arranged at the bottom of the collecting chamber at the outlet end of the tube, and the exhaust gas outlet is at the upper part.
  • the dewatered sludge having a water content of 40% to 85% enters the sludge storage tank 2 from the inlet 1 and is transported by the quantitative screw conveyor 3 into the beginning of the first air-drying mechanism 5, and the sludge dosage is determined by the quantitative screw conveyor 3
  • the rotational speed is adjusted, and the dry sludge having a water content of 5% to 35% is transported by the quantitative screw conveyor 10 in the air-drying mechanism, and the dry sludge dosage is adjusted by the rotational speed of the quantitative screw conveyor 10 in the air-drying mechanism;
  • the mud is mixed, loosened, and moved forward under the force of the reamer 4.
  • the spindle speed of the first air drying mechanism 5 is adjustable from 0 to 30 rpm, and the dehumidification heat from the air inlet 20 is obtained in the process.
  • the air undergoes heat and mass transfer, and the moisture in the sludge is continuously evaporated.
  • the end of the first air drying mechanism 5 the moisture content of the sludge has dropped to between 20% and 40%, and the appearance is loose and granular.
  • the sludge at the end of the first section of the air-drying mechanism 5 enters the beginning of the second-stage air-drying mechanism 8 through the communication passage 7 connecting the first-stage air-drying mechanism 5 and the second-stage air-drying mechanism, and the second section is air-dried.
  • the spindle speed is adjustable from 0 to 30 rpm, and the material level of the second air drying mechanism 8 is higher than the discharge port 21 At the bottom, the sludge exits the sludge product through the discharge port 21.
  • the sludge entering the second section of the air-drying mechanism 8 is moved forward by the reamer and simultaneously transfers heat and mass transfer with the dehumidifying hot air from the bottom of the second air-drying mechanism 8.
  • the moisture in the sludge continues. When it is evaporated to the end of the second air drying mechanism, the moisture content of the sludge has dropped to 5% ⁇ 35 %, and then passed through the quantitative screw conveyor.
  • the heat of the dehumidification system is recovered, and then the air heater 17 is introduced to raise the temperature to 20 ⁇ 20 ( TC ; finally, the main pipe 18 is distributed into the connecting pipe 19 and is blown into the first air drying mechanism and the second air drying mechanism.
  • the heat and mass of the dehumidifying hot air and the sludge are transferred to the water to evaporate the sludge; the exhaust gas passes through the top of the drying device.
  • the gas collection port is collected, cooled in the exhaust gas heat exchanger 13 tube, and the condensed water is discharged from the exhaust gas condensate collecting pipe 24, and the cooled exhaust gas is discharged from the exhaust gas discharge pipe 23.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Treatment Of Sludge (AREA)
  • Drying Of Solid Materials (AREA)

Description

¾ 明 书 一种污泥风干装置 技术领域
本实甩新型属于污泥处理设备领域， 具体为对污水污泥进行低能耗干 燥处理的一种污泥风干装置。
背景技术
在城镇污水处理的过程中会产生大量的污泥， 污水处理厂一般仅对其 进行浓缩和脱水处理，含水率约 80%的脱水污泥通常被外运处理处置。为了 有效地实现污泥的减量化和资源化利用， 一般会先对脱水污泥进行干燥处 理。 国内外常用的污泥干燥工艺主要有流化床干燥、 多层圆盘干燥、 薄膜 干燥、 浆叶干燥和带式干燥， 它们以直接或间接的方式对脱水污泥进行干 燥。 在实际的干燥过程中难以避免地会出现以下问题： （1 ) 干燥设备内部 元件磨损严重， 导致设备的故障率较高： （2)采用中高温干燥， 干燥能耗 高； （3 )干燥后尾气处理工序复杂， 费用较高； （4) 存在粉尘爆炸和火灾 的可能性， 具有很高的危险性。
实用新型内容
本实用新型的目的是针对以上所述污泥干燥工艺存在的不足， 提供干 燥耗能低、 尾气污染低、 设备投资少、 运行稳定和安全性高的一种污泥风 干装置。
本实用新型是这样实现的： 一种污泥风干装置， 包括最少一段风干机 构、 定量给料机构和除湿加热机构，
所述的风干机构包括主轴、 铰刀和电机， 电机的输出轴与主轴连接， 电机带动主轴慢速转动， 铰刀根据污泥的输送方向有规律地安装在主轴上， 具有使物料翻动、 破碎、 移动的功能； 定量给料机构与风干机构的始端连 接。
所述的风干机构设置有两段， 定量给料机构与第一段风干机构的始端 连接， 第一段风干机构的末端与第二段风干机构的始端连通， 在连通处上 方设置有出料口， 第二段风干机构末端与第一段风干机构始端连通， 使第 一段风干机构与第二段风干机构形成环路结构。
所述的除湿加热机构包括除湿冷交换器、 尾气热交换器、 除湿热交换 器、 空气加热器、 风机和制冷压缩机， 进风口与除湿冷交换器连接， 除湿 冷交换器与尾气热交换器连接， 尾气热交换器通过鼓风机与除湿热交换器 连接， 除湿热交换器与空气加热器连接， 除湿冷交换器底部设有冷凝水排 放管。
所述的除湿加热机构设置在风干机构的上方， 空气加热器出口以管道 与风干机构进风口连接； 风干机构上盖排气口与尾气热交换器列管进口端 连接， 列管出口端集气室底部设有冷凝水收集管， 上部为尾气'出口。
所述的定量给料机构包括污泥贮槽和定量螺旋输送机， 定量螺旋输送 机设置在污泥贮槽的下方。
与现有技术相比， 本实用新型具有的优点是： 一是动态生产稳定性高， 可实现全自动化生产； 二是除湿加热机构中的冷、 热能回收设置使得干燥 效率高、 能耗低； 三是污泥在干燥装置内的停留时间可调， 使得出料含水 率可调； 四是尾气经冷却排放冷凝水后才排出， 降低了尾气处理成卒； 五 是产出的污泥为松散颗粒状， 长期存放不会厌氧发臭， 更利于污泥的资源 化利用。
附图说明
图 1是本实用新型一种污泥风干装置的原理框图；
图 2是本实用新型一种污泥风干装置的右视结构示意图；
图 3是本实用新型一种污泥风干装置的主视结构示意图；
图 4是本实用新型一种污泥风干装置的 A- A面结构示意图。 具体实施方式
以下结合附图和具体实施例对本实用新型一种污泥风干机构进行详细 的说明。 '
一种污泥风干机构， 如图 1〜4所示， 包括最少一段风干机构、 定量给 料机构和除湿加热机构， 风干机构包括外壳、 主轴、 铰刀 4和电机， 电机 的输出轴与主轴连接， 电机带动主轴慢速转动， 铰刀 4根据污泥的输送方 向有规律地安装在主轴上， 具有使物料翻动、 破碎、 移动的功能； 定量给 料机构与风干机构的始端连接。 风干机构设置有两段， 定量给料机构与第 一段风干机构 5的始端连接，第一段风干机构 5的末端与第二段风干机构 8 的始端通过连通通道 7连通， 在连通通道 7处上方设置有出料口 21， 第二 段风干机构 8末端与第一段风干机构 5始端连通， 使第一段风干机构 5与 第二段风干机构 8形成环路结构。
定量给料机构由包括污泥贮槽 2和定量螺旋输送机 3组成， 定量螺旋 输送机 3设置在污泥贮槽 2的下方。 从进口 1进入污泥贮槽 2， 由定量螺 旋输送机 3输送进入第一段风干机构 5的始端， 污泥投加量由定量螺旋输 送机 3的转速调节，含水率 5%〜35 %的干污泥由风干机构内定量螺旋输送 机 10输送， 干污泥投加量由风干机构内定量螺旋输送机 10的转速调节。
除湿加热机构包括除湿冷交换器 12、 尾气热交换器 13、 除湿热交换器 16、 空气加热器 17、 鼓风机 15和制冷压缩机 14， 进风口 11与除湿冷交换 器 12连接， 除湿冷交换器 12与尾气热交换器 13连接， 尾气热交换器 13 通过鼓风机 15与除湿热交换器 16连接， 在除湿热交换器 16上设置有空气 加热器 17， 在除湿冷交换器 12底部设有冷凝水排放管 22 ο 除湿加热机构 设置在第一风干机构 5的上方， 空气加热器出口以管道 19与风干机构侧面 或底部的进风口 20连接； 风干机构上盖排气口与尾气热交换器列管进口端 连接， 列管出口端集气室底部设有冷凝水收集管， 上部为尾气出口。
含水率 40 %〜85 %的脱水污泥， 从进口 1进入污泥贮槽 2， 由定量螺 旋输送机 3输送进入第一段风干机构 5的始端， 污泥投加量由定量螺旋输 送机 3的转速调节，含水率 5 %〜35 %的干污泥由风干机构内定量螺旋输送 机 10输送来， 干污泥投加量由风干机构内定量螺旋输送机 10 .的转速调节; 干湿污泥在铰刀 4的作用力下一起混合、 翻松、 前移， 第一段风干机构 5 的主轴转速为 0〜30转 /分可调， 此过程中与从进气口 20来的除湿热空气 进行传热传质作用， 污泥中的水分被不断蒸发； 至第一段风干机构 5末端 时， 污泥含水率已下降至 20%〜40%之间， 外观呈松散颗粒状。 在挤压力 的作用下， 第一段风干机构 5末端的污泥通过连接第一段风干机构 5和第 二段风干机构的连通通道 7进入第二段风干机构 8的始端， 第二段风干的 主轴转速为 0〜30转 /分可调， 在第二段风干机构 8的料位高于出料口 21 底部时， 污泥则通过出料口 21排出污泥产品。 进入第二段风干机构 8的污 泥在铰刀的作用下边翻动边前移， 同时与从第二段风干机构 8.底部上来的 除湿热空气进行传热传质作用， 污泥中的水分继续被蒸发， 至第二段风干 机构末端时， 污泥含水率已下降至 5 %〜35 %， 然后通过定量螺旋输送机
10输送进入第一段风干机构 5的始端， 与新进入第一段风干机构 5的含水 率在 40 %〜85 %的脱水污泥混合， 进行下一个循环。 在鼓风机 15的作用下， 空气从除湿加热机构进口 11被抽入， 在除湿 冷交换器 12被冷却， 冷凝水从空气冷凝水收集管 22排出； 除湿后的空气 进入尾气热交换器 13管外， 尾气进入尾气热交换器管内， 空气与尾气进行 间接换热回收尾气中的热量； 随后空气进入除湿热交换器 16.回收除湿系统 热量， 再进入空气加热器 17将温度提高至 20〜20(TC ; 最后通过总管 18分 配进入连接管道 19鼓入第一段风干机构和第二段风干机构中。 除湿热空气 与污泥进行传热传质， 使污泥的水分蒸发； 尾气通过干化装 顶部的集气 口被收集，在尾气热交换器 13管内被冷却， 冷凝水从尾气冷凝水收集管 24 排出， 冷却后的尾气从尾气排放管 23排出。
上述实施例并非是对本实用新型的限制， 有关技术领域的普通技术人 员， 在不脱离本发明的精神和范围的情况下， 还可以作出各种变化和变型， 因此所有等同的技术方案也应属于本发明的范畴， 本实用新型的专利保护 范围应由各权利要求限定。

Claims

权 利 要 求 书
1、 一种污泥风干装置， 包括最少一段风干机构、 定量给料机构和除湿 加热机构， 所述的风干机构包括主轴、 铰刀和电机， 电机的输出轴与主轴 连接， 铰刀地安装在主轴上； 定量给料机构与风干机构的始端连接。
2、 根据权利要求 1 所述的一种污泥风干装置， 其特征在于： 所述的 风干机构设置由两段， 定量给料机构与第一段风干机构的始端连接， 第一 段风干机构的末端与第二段风干机构的始端连通， 在连通处上方设置有出 料口， 第二段风干机构末端与第一段风干机构始端连通， 使第一段风干机 构与第二段风干机构形成环路结构。
3、根据权利要求 2所述的一种污泥风干装置， 其特征在于： 所述的除 湿加热机构包括除湿冷交换器、 尾气热交换器、 除湿热交换器、 空气加热 器、 风机和制冷压缩机， 进风口与除湿冷交换器连接， 除湿冷交换器与尾 气热交换器连接， 尾气热交换器通过鼓风机与除湿热交换器连接， 除湿热 交换器与空气加热器连接， 除湿冷交换器底部设有冷凝水排放管。
4、 根据权利要求 3所述的一种污泥风干装置， 其特征在于： 所述的 除湿加热机构设置在风干机构的上方， 空气加热器出口以管道与风干机构 进风口连接； 风干机构上盖排气口与尾气热交换器列管进口端连接， 列管 出口端集气室底部设有冷凝水收集管， 上部为尾气出口。
5根据权利要求 1所述的一种污泥风干装置， 其特征在于： 所述的定 量给料机构包括污泥贮槽和定量螺旋输送机， 定量螺旋输送机设置在污泥 贮槽的下方。 6、根据权利要求 1、 2或者 3 所述的一种污泥风干装置，其特征在于: 所述的风干机构的主轴转速为 0〜30转 /分钟。
PCT/CN2010/000283 2010-02-05 2010-03-08 一种污泥风干装置 WO2011094904A1 (zh)

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