WO2013086742A1 - 污泥磁化热解处理处置装置及污泥处理处置的方法 - Google Patents

污泥磁化热解处理处置装置及污泥处理处置的方法 Download PDF

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Publication number
WO2013086742A1
WO2013086742A1 PCT/CN2011/084138 CN2011084138W WO2013086742A1 WO 2013086742 A1 WO2013086742 A1 WO 2013086742A1 CN 2011084138 W CN2011084138 W CN 2011084138W WO 2013086742 A1 WO2013086742 A1 WO 2013086742A1
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WIPO (PCT)
Prior art keywords
sludge
inner cylinder
magnetization
air
cylinder body
Prior art date
Application number
PCT/CN2011/084138
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English (en)
French (fr)
Inventor
林秀梅
林建男
Original Assignee
Lin Xiumei
Lin Jiannan
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Publication date
Application filed by Lin Xiumei, Lin Jiannan filed Critical Lin Xiumei
Priority to PCT/CN2011/084138 priority Critical patent/WO2013086742A1/zh
Priority to CN201190000786.7U priority patent/CN203498235U/zh
Publication of WO2013086742A1 publication Critical patent/WO2013086742A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
    • 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
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • 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
    • C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/00001—Treating oxidant before combustion, e.g. by adding a catalyst
    • 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
    • Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing

Definitions

  • the present invention relates to a sludge magnetization pyrolysis treatment and disposal device and a method for sludge treatment and disposal. Background technique:
  • the sludge produced by municipal sewage treatment plants and some industrial sludges are basically treated by the following methods: landfill method and high temperature incineration method.
  • the landfill method has been considered as a phase-out technology for sludge treatment because of the shortage of land resources and the potential for secondary pollution.
  • the high-temperature incineration method has high energy consumption, high operating cost, large investment, and large amount of dioxin. Difficulties in reaching standards are difficult to promote and apply. Summary of the invention:
  • the object of the present invention is to provide a sludge magnetization pyrolysis treatment and disposal device which is not only simple in structure and reasonable in design, but also beneficial in improving the pyrolysis rate of sludge and reducing the pyrolysis temperature of sludge.
  • the sludge magnetization pyrolysis treatment and treatment device of the present invention comprises a rotating cylinder and a seat body supporting the rotation of the rotating cylinder, wherein: the rotating cylinder comprises an outer cylinder body and an inner cylinder body disposed in the outer cylinder body, the inner cylinder body A burner is arranged on the discharge port side to heat the inner cylinder body, and a wind supply device is arranged on the side of the discharge port to supply air to the inner cylinder body and control the oxygen supply amount, and the air supply device is provided with an air magnetization device.
  • the air magnetization device is composed of a permanent magnet and a non-magnetic ventilating tube.
  • the permanent magnet is fixed on both sides of the ventilating tube, one side is the N pole of the permanent magnet, and the other side is the S pole of the permanent magnet, and the air is passed through the vent tube.
  • the magnetic lines of force generated by the placed permanent magnets are magnetized.
  • the inner cylinder wall is evenly distributed with ceramic balls which are freely rotatable within the metal frame, and the metal sash is welded to the inner cylinder wall.
  • the burner blast port extends into the body of the fire guide body disposed inside the discharge port side of the inner cylinder.
  • the air supply device is a Roots blower, but is not limited to a Roots blower.
  • An air magnetization device is provided on the intake duct section of the Roots blower to the rotating cylinder.
  • a shaftless spiral seal feeding device is connected to the inlet side of the inner cylinder.
  • a fire shield is disposed in the feed body side of the inner cylinder.
  • the outer wall of the inner cylinder is covered with a heat insulating layer.
  • the outer cylindrical body is provided with a spring alignment device to support the inner cylinder to ensure the coaxiality of operation.
  • the inner cylinder discharge port is connected with a star seal discharge device.
  • Another object of the present invention is to provide a sludge magnetization pyrolysis treatment method which is advantageous for increasing sludge pyrolysis rate and reducing sludge pyrolysis temperature.
  • the sludge magnetization pyrolysis treatment method of the invention is characterized in that: before the sludge is fed, the inner wall of the rotary drum is preheated by the burner to reach 400 degrees, and then the feeding is started, and the sludge is fed into the hopper.
  • the material enters the inner cylinder through the shaftless spiral seal feeding device, and the metal sash which is spirally distributed on the inner wall of the inner cylinder of the cement ball attached to the ceramic ball is continuously raised along the circumference.
  • falling forward the sludge is tumbling forward, the moisture of the drying section between the feed port and the fire shield is basically dried, and the hot melt section between the fire shield and the fire guide is at the position of the fire guide.
  • the sludge gradually moves from the inner wall of the inner cylinder and the outer wall of the fire tube to the discharge port, and finally is discharged by the star seal discharge device; the sludge in the cylinder is dried, and then the organic matter of the long molecular chain is thermally decomposed into short molecular chains.
  • Combustible gas and carbon can control the oxygen supply and heat supply, so that the organic matter can be completely decomposed, and the carbon can be completely burned; the carbon can be incompletely burned to produce activated carbon; even the organic matter can be completely pyrolyzed to produce organic mud.
  • the device of the invention is equipped with an air magnetization device through the air supply system, thereby improving the pyrolysis speed of the sludge and reducing the pyrolysis temperature of the sludge, thereby reducing the amount of dioxin generated and reducing the running cost.
  • the shaftless spiral seal feeding device is used to solve the problem that the feed is easy to block, the feed is discontinuous and the sealing is poor.
  • the device of the invention adopts a star-type sealing and unloading device, which is composed of a mature star-shaped discharge (ash) valve in the industry, and solves the problem of discontinuous slag discharge and tight sealing.
  • the fire-breathing port of the burner of the device of the invention is provided with a fire-guiding tube in the rotating cylinder, so that the slag is not interfered by the airflow, and the working condition of the pyrolysis combustion section is ensured.
  • the inner wall of the rotating cylinder metal of the device of the invention is provided with a self-cleaning ceramic ball which can rotate freely in a fixed space, which can not only store heat but also magnetically separate, strengthens the magnetizing airflow, stabilizes the working condition, and solves the problem at the same time.
  • the problem of sludge wall hanging ensures that the sludge with a water content of 25% ⁇ 85% can be treated normally.
  • the heat insulation layer of the device of the invention adopts light heat insulation material, which greatly reduces the weight of the equipment and reduces Low drive power consumption.
  • Figure 1 is a schematic view showing the configuration of the apparatus of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1. detailed description:
  • the sludge magnetization pyrolysis treatment and treatment device of the present invention comprises a rotating drum 1 and a seat body 2 supporting the rotation of the rotating drum, the rotating drum 1 comprising an outer cylinder body 3 and an inner cylinder body 4 disposed in the outer cylinder body, the inner cylinder
  • the discharge port 6 of the body 4 is provided with a burner 6 to heat the inner cylinder, and on the side of the discharge port 5, a wind supply device 7 is further provided to supply air to the inner cylinder and control the oxygen supply amount, and the air supply device
  • the air magnetization device 8 is arranged on the air magnetization device, and the air magnetization device is composed of a permanent magnet and a non-magnetic ventilation tube (the ventilation tube can be a rectangular ventilation tube, a circular ventilation tube, etc.), and the permanent magnet is fixed on both sides of the ventilation tube.
  • the pyrolysis temperature can be reduced to 400 °C (normal sludge pyrolysis temperature is above 600 °C), the flue gas volume is reduced by more than 25% compared with high temperature incineration, and the amount of dioxin is greatly reduced, which reduces the difficulty of exhaust gas purification. , improve sludge disposal speedThereby reducing energy consumption and reducing processing and disposal costs.
  • the “recycling, reduction, harmlessness, and stabilization” of sludge treatment and disposal have been realized.
  • the ceramic ball 9 which is freely rotatable in the metal sash is evenly distributed in the inner cylinder wall, and the metal sash is welded on the inner cylinder wall, and the inner wall of the rotating cylinder metal of the device of the invention is arranged
  • the self-cleaning ceramic ball that rotates freely in the fixed space can not only store heat but also magnetically separate, strengthens the magnetizing airflow, stabilizes the working condition, and solves the problem of sludge wall hanging, ensuring the water content is 25%.
  • the sludge in such a large range of ⁇ 85% can be treated normally.
  • the burner 6 of the burner 6 extends into the body of the flame guide 10 disposed inside the discharge port side of the inner cylinder. Due to the provision of the fire guide, the slag is not disturbed by the airflow, and the working condition of the pyrolysis combustion section is ensured.
  • the above air supply device is a Roots blower (but not limited to a Roots blower), the Roots blower system is provided with a fan and an air magnetization device, and the magnetized supply air inlet is located at the upper end of the rotary drum discharge port side. Since sludge pyrolysis incineration requires oxygen supply to the oxygen, it is realized by the magnetic supply of the Roots blower and the control of the oxygen supply by adjusting the fan speed to control the gas supply of the magnetized air.
  • the air at the outlet of the Roots blower under the action of the strong magnetic field of the magnetizing device, the oxygen in the form forms an orderly negatively charged oxygen ion, which is introduced into the cylinder.
  • the organic matter molecules of the sludge are decomposed into gas, water, Inorganic, and at the same time produce a chain reaction of other molecular decomposition.
  • the sludge After the sludge is gradually decomposed into inorganic matter, it can be reduced to the inorganic ash residue with zero water content remaining in the burning section of the cylinder.
  • the device of the invention replaces the traditional strong thermal oxidation combustion (600 ⁇ 800 °C) by the principle of molecular decomposition of organic matter molecules (40CTC), saves fuel consumption and energy consumption, and can greatly reduce the combustion due to the occurrence of inorganic substances. Emissions of harmful gases such as dioxins.
  • the feed hopper 12 of the present invention has a long inverted vertebral shape to ensure continuous and smooth blanking.
  • the upper part of the inlet is also provided with a smoke exhaust pipe connected to the secondary combustion equipment.
  • a shaftless spiral seal feeding device 13 is connected to the inlet side of the inner cylinder body, and a shaftless spiral seal feeding device is adopted, which solves the problems of easy clogging of the feed, discontinuous feeding and poor sealing performance.
  • the inner cylinder side of the inner cylinder body is provided with a fire blocking plate 14, and the fire blocking plate is a circular steel plate, so that the material feeding material falls in front of the fire blocking plate and does not directly contact the flame behind the fire blocking plate.
  • the inner wall of the inner cylinder is covered with a heat insulating layer 15.
  • the heat insulating layer is made of a light heat insulating material, which greatly reduces the weight of the device, reduces the driving power consumption, and ensures that the ambient temperature does not exceed 40 °C.
  • the outer circumference of the outer cylinder is provided with a spring alignment device 16 to support and fix the inner cylinder to ensure the coaxiality of its operation.
  • the inner cylinder discharge port is connected with a star seal discharge device 17, which is composed of a star-shaped discharge (ash) valve or a star-type discharge valve + flange connection which is mature technology in the industry.
  • a star seal discharge device 17 which is composed of a star-shaped discharge (ash) valve or a star-type discharge valve + flange connection which is mature technology in the industry. The problem of discontinuous slag and tight sealing is solved.
  • the gear drive unit 18 provided on the outer circumference of the outer cylinder maintains high precision of the cylinder operation and rotates smoothly.
  • the sludge magnetization pyrolysis treatment method of the invention adopts a burner to preheat the inner wall of the rotary drum before the sludge is fed, reaches 400 degrees, and then starts feeding, and the sludge is fed from the equipped hopper, without
  • the shaft spiral sealing feeding device enters the inner cylinder body, and the metal sash which is spirally distributed on the inner wall of the inner cylinder of the cement ball attached to the ceramic ball is continuously raised along the circumference and falls forward to realize the forward rolling movement of the sludge, and the material is fed.
  • the moisture in the drying section between the mouth and the fire barrier is basically dried, and the hot-disining section between the fire-stopping plate and the fire-guiding cylinder, and the sludge from the inner wall of the inner cylinder and the outer wall of the heat-guiding cylinder to the discharge port at the position of the fire guide cylinder Gradually, it is finally discharged by the star seal discharge device; the sludge in the cylinder is dried, and then the organic matter of the long molecular chain is thermally decomposed into a short molecular chain of combustible gas and carbon; by controlling the oxygen supply amount and the heat supply, The organic matter is completely decomposed, and the carbon is completely burned; the carbon can also be incompletely burned to produce activated carbon; Fully pyrolyzed to produce organic mud.
  • the sludge having a water content of 25% to 85% can be treated and disposed by the device, and by controlling the parameters of the gas supply, the temperature, the residence time of the material, and the like, the water and the organic matter can be produced as needed.
  • By-products such as inorganic silt, organic fertilizer raw materials, and activated carbon.
  • the device of the invention is equipped with an air magnetization device through the air supply system, thereby improving the pyrolysis speed of the sludge and reducing the pyrolysis temperature of the sludge, thereby reducing the amount of dioxin generated and reducing the running cost.
  • the shaftless spiral seal feeding device is used to solve the problems of easy clogging of the feed, discontinuous feeding and poor sealing.
  • the device of the invention adopts a star-type sealing and unloading device, which is a mature star unloading device in the industry.
  • the (grey) valve structure solves the problem of discontinuous slag and tight seal.
  • the fire-breathing port of the burner of the device of the invention is provided with a fire-guiding tube in the rotating cylinder, so that the slag is not interfered by the airflow, and the working condition of the pyrolysis combustion section is ensured.
  • the inner wall of the rotating cylinder metal of the device of the invention is provided with a self-cleaning ceramic ball which can rotate freely in the fixed space, which can not only store heat but also magnetically separate, strengthens the magnetizing airflow, stabilizes the working condition, and solves the problem at the same time.
  • the sludge wall-hanging problem ensures that the sludge with a water content of such a range of 25% to 85% can be treated normally.
  • the heat insulation layer of the device of the invention adopts a light heat insulation material, which greatly reduces the weight of the device and reduces the driving power consumption.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treatment Of Sludge (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

一种污泥磁化热解处理处置装置，其包括旋转筒（1）和支撑旋转筒转动的座体（2）。旋转筒（1）包括外筒体（3）和设在外筒体内的内筒体（4），内筒体出料口（5）侧设有燃烧机（6）以加热内筒体，在该出料口（5）侧还设有供风装置（7）以对内筒体（4）供风和控制供氧量，供风装置（7）上设有空气磁化装置（8）。同时，还提供了一种污泥磁化热解处理处置方法。由于采用了空气磁化装置和燃烧机加热，降低了烟气量，并大大降低二噁英生成量，减少了尾气净化难度，提高了污泥处置速度，从而降低了能耗和处理成本。

Description

污泥磁化热解处理处置装置及污泥处理处置的方法
技术领域：
本发明涉及一种污泥磁化热解处理处置装置及污泥处理处置的 方法。 背景技术：
市政污水厂产生的污泥和某些工业污泥， 目前基本采用以下几种 方法处理处置：填埋法，高温焚烧法。填埋法因为土地资源日渐紧缺、 存在二次污染隐患等问题， 已被认为是污泥处理的淘汰技术； 高温焚 烧法因为能耗高、 运行成本高、 投资大、 二噁英生成量大、 达标排放 困难而难以推广应用。 发明内容：
本发明的目的在于提供一种污泥磁化热解处理处置装置，该污泥 磁化热解处理处置装置不仅结构简单、设计合理， 而且有利于提高污 泥热解速度， 降低污泥热解温度。
本发明污泥磁化热解处理处置装置，包括旋转筒和支撑旋转筒转 动的座体， 其特征在于： 所述旋转筒包括外筒体和设在外筒体内的内 筒体， 所述内筒体出料口侧设有燃烧机以加热内筒体， 在该出料口侧 还设有供风装置以对内筒体供风和控制供氧量，所述供风装置上设有 空气磁化装置。 上述空气磁化装置由永磁体和不导磁的通风管构成，永磁体固定 在通风管两侧， 一侧为永磁体的 N极， 另一侧为永磁体的 S极， 空气 通过通风管时被放置的永磁体产生的磁力线磁化。
上述内筒壁内均匀分布有可在金属框格内自由转动的陶瓷球，所 述金属框格焊接在内筒壁上。
上述燃烧机喷火口伸入设置在内筒体出料口侧体内的导火筒体 内。
上述供风装置为罗茨风机， 但不仅限于罗茨风机， 在罗茨风机通 往旋转筒体内的进风管段上设有空气磁化装置。
上述内筒体进料口侧连接有无轴螺旋密封进料装置。
上述内筒体进料侧体内设有挡火板。
上述内筒体外壁裹有隔热层。
上述外筒体圆周分段设有弹簧调心装置以支撑固定内筒体，保证 其运转同轴度。
上述内筒体出料口连接有星型密封卸料装置。
本发明的另一个目的在于提供一种污泥磁化热解处理处置方法， 该污泥磁化热解处理处置方法有利于提高污泥热解速度，降低污泥热 解温度。
本发明污泥磁化热解处理处置方法， 其特征在于： 在污泥进料前 先用燃烧机对旋转转筒内壁进行预热， 达到 400度， 然后开始进料， 污泥自装备的料斗进料， 经无轴螺旋密封进料装置进入内筒体， 污泥 被附着陶瓷球的内筒体内壁上螺旋分布的金属框格不断沿圆周抬升 并向前落下， 实现污泥向前翻滚运动， 物料在进料口与挡火板间的烘 干段水分基本被烘干， 在挡火板与导火筒间为热解段， 在导火筒位置 污泥从内筒体内壁与导火筒外壁的空间往出料口渐进，最后由星型密 封卸料装置排出； 筒内污泥从烘干， 然后长分子链的有机质受热分解 成短分子链的可燃气体及碳； 可通过控制供氧量和供热量， 使有机子 完全分解， 碳完全燃烬； 也可使碳不完全燃烧， 产生活性碳； 甚至可 使有机质不完全热解， 产生有机泥。
本发明装置及方法的优点：
1、 本发明装置通过供风系统配有空气磁化装置，从而提高了污泥 热解速度， 降低了污泥热解温度， 既减少了二噁英生成量， 又降 低了运行成本。
2、 采用无轴螺旋密封进料装置， 解决了进料易堵塞、进料不连续 及密封性差问题。
3、 本发明装置采用星型密封卸料装置，系由业内成熟的星型卸料 (灰） 阀构成， 解决了出渣不连续及密性封差的问题。
4、 本发明装置燃烧机喷火口至旋转筒内设有导火筒，使出渣不受 气流扬灰干扰， 同时保证了热解燃烧段工况稳定。
5、 本发明装置旋转筒金属内壁布置有能在固定空间内自由转动 的有自洁功能的陶瓷球， 既能蓄热又能隔磁， 强化了磁化气流作 用，稳定了工况，同时解决了污泥挂壁难题，确保含水率在 25%〜85% 这么大的范围内的污泥都能得到正常处理。
6、 本发明装置隔热层采用轻质隔热材质， 大大降低设备重量，降 低了驱动功耗。 附图说明：
图 1是本发明装置的构造示意图；
图 2是图 1的 A-A剖面图。 具体实施方式：
本发明污泥磁化热解处理处置装置，包括旋转筒 1和支撑旋转筒 转动的座体 2， 所述旋转筒 1包括外筒体 3和设在外筒体内的内筒体 4， 所述内筒体 4出料口侧 5设有燃烧机 6以加热内筒体， 在该出料 口 5侧还设有供风装置 7以对内筒体供风和控制供氧量，所述供风装 置上设有空气磁化装置 8， 空气磁化装置由永磁体和不导磁的通风管 构成 （该通风管可以是矩形通风管、 圆形通风管等均可）， 永磁体固 定在通风管两侧， 一侧为永磁体的 N极， 另一侧为永磁体的 S极，空 气通过通风管时被放置的永磁体产生的磁力线磁化，由于采用了空气 磁化装置和燃烧机的加热， 使物料磁化热解， 热解温度可降低到 400 °C (普通污泥热解温度在 600 °C以上）， 烟气量比高温焚烧降低 25% 以上， 并大大降低二噁英生成量， 减少了尾气净化难度， 提高污泥处 置速度。 从而降低能耗， 降低了处理、 处置成本。 真正实现了污泥处 理处置的 "资源化、 减量化、 无害化、 稳定化"。
上述内筒壁内均匀分布有可在金属框格内自由转动的陶瓷球 9， 所述金属框格焊接在内筒壁上，本发明装置旋转筒金属内壁布置有能 在固定空间内自由转动的有自洁功能的陶瓷球， 既能蓄热又能隔磁， 强化了磁化气流作用， 稳定了工况， 同时解决了污泥挂壁难题， 确保 含水率在 25%〜85%这么大的范围内的污泥都能得到正常处理。
上述燃烧机 6喷火口伸入设置在内筒体出料口侧体内的导火筒 10体内。 由于设有导火筒， 使出渣不受气流扬灰干扰， 同时保证了 热解燃烧段工况稳定。
上述供风装置为罗茨风机 （但不限于罗茨风机）， 罗茨风机系统 设有风机和空气磁化装置， 磁化供风进气口位于旋转筒出料口侧上 端。 由于污泥热解焚烧需要欠氧供氧， 其由罗茨风机磁化供风和控制 供氧量其由调整风机转速来控制磁化空气供气量来实现。罗茨风机出 风口的空气， 在磁化装置的强磁场作用下， 其中的氧气形成有序的带 负电氧离子， 导入筒体内， 经磁化热解， 污泥有机物质分子被分解为 气、 水、 无机物， 并同时产生其它分子分解的连锁反应。 污泥逐渐被 分解成无机物后， 在筒体的燃烬段可减量至仅剩零含水率的无机灰 渣。 本发明装置借有机物质分子缺氧磁力分解原理 （40CTC ) 替代传 统型强热氧化燃烧 （600〜800 °C )， 节省油耗能耗， 并由于燃烧多发 生在无机物状态下， 因而能大大减少二噁英等有害气体的排放量。
本发明的进料料斗 12呈长倒椎体状， 保证落料的连续顺畅。 进 料口上部还开有排烟管， 连接到二次燃烧设备。
上述内筒体进料口侧连接有无轴螺旋密封进料装置 13， 采用无 轴螺旋密封进料装置， 解决了进料易堵塞、进料不连续及密封性差问 题。 上述内筒体进料侧体内设有挡火板 14， 挡火板是圆形的钢板， 使物料进料落下时在挡火板前， 不会和挡火板后的火焰直接接触。
上述内筒体外壁裹有隔热层 15， 该隔热层采用轻质隔热材质， 大大降低设备重量， 降低了驱动功耗， 也有利于保证环境温度不超过 40°C。
上述外筒体圆周分段设有弹簧调心装置 16以支撑固定内筒体， 保证其运转同轴度。
上述内筒体出料口连接有星型密封卸料装置 17， 该星型密封卸 料装置系由业内成熟技术的星型卸料 （灰） 阀或星型卸灰阀 +法兰联 接构成， 解决了出渣不连续及密性封差的问题。
设在外筒体外周的齿轮传动驱动装置 18可使筒体运转维持高精 准度， 转动平稳。
本发明污泥磁化热解处理处置方法，在污泥进料前先用燃烧机对 旋转转筒内壁进行预热， 达到 400度， 然后开始进料， 污泥自装备的 料斗进料， 经无轴螺旋密封进料装置进入内筒体， 污泥被附着陶瓷球 的内筒体内壁上螺旋分布的金属框格不断沿圆周抬升并向前落下，实 现污泥向前翻滚运动，物料在进料口与挡火板间的烘干段水分基本被 烘干， 在挡火板与导火筒间为热解段， 在导火筒位置污泥从内筒体内 壁与导火筒外壁的空间往出料口渐进， 最后由星型密封卸料装置排 出； 筒内污泥从烘干， 然后长分子链的有机质受热分解成短分子链的 可燃气体及碳； 可通过控制供氧量和供热量， 使有机子完全分解，碳 完全燃烬； 也可使碳不完全燃烧， 产生活性碳； 甚至可使有机质不完 全热解， 产生有机泥。
本发明在处理时， 可使含水率 25%〜85%的污泥通过该装置处理处 置后， 通过控制供气量、 温度、 物料停留时间等工况参数， 可根据需 要产生不含水和有机物的无机粉砂、 有机肥原料、 活性碳等副产品。
本发明装置及方法的显著优点：
1、 本发明装置通过供风系统配有空气磁化装置， 从而提高了污泥 热解速度， 降低了污泥热解温度， 既减少了二噁英生成量， 又 降低了运行成本。
2、 采用无轴螺旋密封进料装置， 解决了进料易堵塞、 进料不连续 及密封性差问题。
3、 本发明装置采用星型密封卸料装置， 系由业内成熟的星型卸料
(灰） 阀构成， 解决了出渣不连续及密性封差的问题。
4、 本发明装置燃烧机喷火口至旋转筒内设有导火筒， 使出渣不受 气流扬灰干扰， 同时保证了热解燃烧段工况稳定。
5、 本发明装置旋转筒金属内壁布置有能在固定空间内自由转动的 有自洁功能的陶瓷球， 既能蓄热又能隔磁， 强化了磁化气流作 用， 稳定了工况， 同时解决了污泥挂壁难题， 确保含水率在 25%〜85%这么大的范围内的污泥都能得到正常处理。
6、 本发明装置隔热层采用轻质隔热材质， 大大降低设备重量， 降 低了驱动功耗。

Claims

权利要求书
、 一种污泥磁化热解处理处置装置， 包括旋转筒和支撑旋转筒转 动的座体， 其特征在于： 所述旋转筒包括外筒体和设在外筒体 内的内筒体， 所述内筒体出料口侧设有燃烧机以加热内筒体， 在该出料口侧还设有供风装置以对内筒体供风和控制供氧量， 所述供风装置上设有空气磁化装置。
、 根据权利要求 1所述的污泥磁化热解处理处置装置， 其特征在 于： 所述空气磁化装置由永磁体和不导磁的通风管构成， 永磁 体固定在通风管两侧， 一侧为永磁体的 N极， 另一侧为永磁体 的 S极，空气通过通风管时被放置的永磁体产生的磁力线磁化。 、 根据权利要求 1或 2所述的污泥磁化热解处理处置装置， 其特 征在于： 所述内筒壁内均匀分布有可在金属框格内自由转动的 陶瓷球， 所述金属框格焊接在内筒壁上。
、 根据权利要求 3所述的污泥磁化热解处理处置装置， 其特征在 于： 所述燃烧机喷火口伸入设置在内筒体出料口侧体内的导火 筒体内。
、 根据权利要求 4所述的污泥磁化热解处理处置装置， 其特征在 于： 所述供风装置为罗茨风机， 但不仅限于罗茨风机， 在罗茨 风机通往旋转筒体内的进风管段上设有空气磁化装置。
、 根据权利要求 5所述的污泥磁化热解处理处置装置， 其特征在 于： 所述内筒体进料口侧连接有无轴螺旋密封进料装置。
、 根据权利要求 6所述的污泥磁化热解处理处置装置， 其特征在 于： 所述内筒体进料侧体内设有挡火板， 内筒体外壁裹有隔热 层。
、 根据权利要求 7所述的污泥磁化热解处理处置装置， 其特征在 于：所述外筒体圆周分段设有弹簧调心装置以支撑固定内筒体， 保证其运转同轴度。
、 根据权利要求 8所述的污泥磁化热解处理处置装置， 其特征在 于： 所述内筒体出料口连接有星型密封卸料装置。
0、 一种采用权利要求 1所述污泥磁化热解处理处置装置进行污泥 处理处置的方法， 其特征在于： 在污泥进料前先用燃烧机对旋 转转筒内壁进行预热， 达到 400度， 然后开始进料， 污泥自装 备的料斗进料， 经无轴螺旋密封进料装置进入内筒体， 污泥被 附着陶瓷球的内筒体内壁上螺旋分布的金属框格不断沿圆周抬 升并向前落下， 实现污泥向前翻滚运动， 物料在进料口与挡火 板间的烘干段水分基本被烘干，在挡火板与导火筒间为热解段， 在导火筒位置污泥从内筒体内壁与导火筒外壁的空间往出料口 渐进， 最后由星型密封卸料装置排出； 筒内污泥从烘干， 然后 长分子链的有机质受热分解成短分子链的可燃气体及碳； 可通 过控制供氧量和供热量， 使有机子完全分解， 碳完全燃烬； 也 可使碳不完全燃烧，产生活性碳； 甚至可使有机质不完全热解， 产生有机泥。
PCT/CN2011/084138 2011-12-16 2011-12-16 污泥磁化热解处理处置装置及污泥处理处置的方法 WO2013086742A1 (zh)

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