WO2022095153A1 - 由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统 - Google Patents

由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统 Download PDF

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Publication number
WO2022095153A1
WO2022095153A1 PCT/CN2020/131582 CN2020131582W WO2022095153A1 WO 2022095153 A1 WO2022095153 A1 WO 2022095153A1 CN 2020131582 W CN2020131582 W CN 2020131582W WO 2022095153 A1 WO2022095153 A1 WO 2022095153A1
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Prior art keywords
mixed
drying
garbage
inlet
mixed waste
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PCT/CN2020/131582
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English (en)
French (fr)
Inventor
刘效洲
林培斌
文水润
林远劲
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广东工业大学
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Application filed by 广东工业大学 filed Critical 广东工业大学
Priority to US17/463,623 priority Critical patent/US11982444B2/en
Publication of WO2022095153A1 publication Critical patent/WO2022095153A1/zh

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    • 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
    • F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
    • 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
    • F23G5/44—Details; Accessories
    • 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
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • 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
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/10—Drying by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/20—Dewatering by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying

Definitions

  • the invention relates to the field of garbage disposal, in particular to a high-moisture mixed garbage disposal system composed of kitchen garbage and water-containing sludge.
  • landfill incineration
  • composting The domestic waste treatment in my country is mainly landfill, and the proportion of incineration and composting is small, but the proportion of incineration is increasing every year.
  • landfill incineration has the advantages of volume reduction, weight reduction, and energy reuse. If landfilling continues, more cities will be surrounded by garbage in the near future, which forces my country to speed up the construction of garbage incineration plants.
  • the kitchen waste and sludge waste involved in the municipal solid waste contain a lot of water. Therefore, these wastes must be dried to remove water during incineration. Drying treatment, and the exhaust gas generated after drying also needs to be properly treated before it can be discharged into the atmosphere to avoid secondary pollution to the environment.
  • the object of the present invention is to overcome the deficiencies of the above prior art, provide a kind of high-efficiency food waste and water-containing sludge that can effectively remove the moisture in the garbage, make full use of the waste incineration heat, and realize energy circulation and environmental protection. Moisture mixed waste disposal system.
  • the present invention provides a high-moisture mixed waste treatment system composed of kitchen waste and water-containing sludge, which includes: a mixed waste storage device, a mixed waste primary drying device, and a mixed waste incineration connected in sequence
  • the mixed garbage primary drying device comprises: a mixed garbage primary drying body, a primary drying material inlet, a primary drying material outlet, a drying gas inlet, and a primary exhaust gas outlet provided on the mixed garbage primary drying body, and the mixed garbage storage device
  • the discharge outlet is connected with the primary drying inlet of the mixed waste primary drying device through the first conveyor belt;
  • the mixed waste incineration device includes: an incinerator, an incinerator inlet, an incinerator outlet, a combustion-supporting gas inlet, a smoke
  • the gas outlet, the auxiliary gas inlet is connected with the primary waste gas outlet of the mixed waste primary drying device, and the flue gas outlet is connected with the drying gas inlet of the mixed waste primary drying device.
  • a fan is provided at the primary waste gas outlet of the mixed waste primary drying device to introduce waste gas into the mixed waste incineration device.
  • a mixed garbage secondary drying device is further included between the mixed garbage primary drying device and the mixed garbage incineration device, and the mixed garbage secondary drying device includes: a mixed garbage secondary drying body, a secondary drying body disposed on the secondary drying body Dry matter inlet, secondary dry matter outlet, dry gas inlet, dry gas outlet, and secondary waste gas outlet, wherein the secondary dry matter inlet is connected to the primary dry matter outlet of the mixed garbage primary drying device through the transport device, and the secondary dry matter inlet is The dry matter outlet is connected with the incinerator inlet of the mixed waste incinerator through the second conveyor belt, the dry gas inlet is connected with the flue gas outlet of the mixed waste incinerator, and the dry gas outlet and the secondary exhaust gas outlet are respectively connected with the mixed waste incinerator.
  • the auxiliary gas inlet is connected.
  • the transportation device includes a grab bucket and a beam.
  • the mixed garbage is dried by the mixed garbage primary drying device, it is transported to the mixed garbage secondary drying device through the grab bucket and the cross beam, and then the grab bucket is returned to the mixed garbage secondary drying device through the cross beam.
  • the mixed garbage primary drying device continues to complete the grabbing of the mixed garbage.
  • a waste gas vacuum pump is provided at the secondary waste gas outlet to introduce waste gas into the mixed waste incineration device.
  • a vacuum drying device is arranged between the mixed waste secondary drying device and the mixed waste incineration device, and the material inlet of the vacuum drying device is connected with the secondary dried product outlet of the mixed waste secondary drying device, and the material of the vacuum drying device is connected.
  • the outlet is connected with the incinerator inlet of the mixed waste incineration device, and the steam outlet of the vacuum drying device is connected with the combustion gas inlet of the mixed waste incineration device through a vacuum pump.
  • the garbage with a moisture content of 80% to 90% from the mixed garbage storage device is transported to the mixed garbage primary drying device through the first conveyor belt to be dried to a moisture content of 40% to 50%, and then transported to the mixed garbage primary drying device through the transportation device.
  • Mixed garbage secondary drying device after drying to the moisture content of 20% to 25%, then through the vacuum drying device to reduce the moisture content of the mixed garbage to less than 10%, and then transported to the mixed garbage incineration through the second conveyor belt
  • the device is incinerated, and the generated flue gas is returned to the mixed garbage primary drying device and the mixed garbage secondary drying device to dry the garbage.
  • a mixer is provided at the gas-supporting inlet of the mixed waste incineration device, and the inlet of the mixer is connected to the primary waste gas outlet of the mixed waste primary drying device, the secondary waste gas outlet of the mixed waste secondary drying device, and the mixed waste secondary drying device.
  • the drying gas outlet of the device is connected, and the outlet of the mixer is connected with the auxiliary gas inlet of the mixed waste incineration device.
  • a fan is provided at the outlet of the mixer to introduce the auxiliary gas into the auxiliary gas inlet of the mixed waste incineration device.
  • a heat exchanger is provided at the flue gas outlet of the mixed waste incineration device, and the heat exchanger includes: a heat exchanger body, a cold air inlet, a hot air outlet, a high temperature flue gas inlet, and the medium temperature flue gas outlet, the cold air inlet is connected with a fan, the hot air outlet is connected with the inlet of the mixer, the high temperature flue gas inlet is connected with the flue gas outlet of the mixed waste incineration device, and the medium temperature flue gas outlet passes through the first flue gas
  • the pipeline is connected with the drying gas inlet of the mixed waste primary drying device and the drying gas inlet of the mixed waste secondary drying device.
  • the first flue gas pipeline is provided with a first flue gas fan and a first flue gas valve to control the introduction of medium-temperature flue gas into the mixed waste primary drying device and the mixed waste secondary drying device.
  • the medium temperature flue gas outlet is also connected to the chimney through a second flue gas pipeline, and the second flue gas pipeline is provided with a second flue gas valve and a second flue gas fan.
  • the air at 20°C to 25°C from the atmosphere exchanges heat with the flue gas at 350°C to 360°C generated by the heat exchanger and the mixed waste incineration device to form hot air at 250°C to 260°C, and then transported to the In the mixer, the mixed waste incineration device is supported for combustion to improve the combustion efficiency of the mixed waste, and the flue gas at 240 degrees Celsius to 250 degrees Celsius formed after heat exchange is returned to the mixed waste primary drying device and the mixed waste secondary drying device. Dry.
  • the drying gas inlet of the mixed waste primary drying device is set at the bottom end of the mixed waste primary drying body, the primary exhaust gas outlet is set at the top of the mixed waste primary drying body, and the primary drying material inlet is set at the mixed waste primary drying body. Above one side, the primary drying outlet is arranged above the other side of the primary drying body of the mixed waste.
  • a bottom plate is provided under the interior of the mixed garbage primary drying body to divide the inner cavity of the mixed garbage primary drying body into a garbage drying area located at the upper part and a gas circulation area located at the lower part, and a number of uniformly distributed areas are opened on the bottom plate.
  • Each through hole is provided with a conical table-shaped air cap that protrudes upward, and a number of air holes are opened on the peripheral wall of each air cap, so that the drying air entering through the drying air inlet can be discharged from each air cap.
  • the wind eye enters the garbage drying area for preliminary drying of the garbage.
  • the mixed garbage secondary drying device is a vacuum drying device
  • the secondary drying material inlet is located in the top center of the mixed garbage secondary drying body
  • the secondary drying material outlet is located in the bottom end center of the mixed garbage secondary drying body
  • the drying gas inlet is arranged on the bottom side of the secondary drying body of the mixed waste
  • the drying gas outlet is arranged on the top side of the secondary drying body of the mixed waste
  • the secondary exhaust gas outlet is arranged above the side of the secondary drying body of the mixed waste.
  • a number of air inlet pipes are arranged on the inner wall ring of the secondary drying body of the mixed waste, and the adjacent air inlet pipes are connected at the end and the end.
  • the drying gas outlet is connected.
  • a supplementary combustion device is further included between the drying gas inlet of the mixed garbage primary drying device and the medium-temperature flue gas outlet of the heat exchange device, and the supplementary combustion device includes: a supplementary combustion body and a first gas disposed on the supplementary combustion body The inlet, the second gas inlet, and the combustion gas outlet, the first gas inlet is communicated with the methane gas source, the second gas inlet is communicated with the medium-temperature flue gas outlet of the heat exchange device, and the combustion gas outlet is communicated with the drying device of the mixed waste primary drying device.
  • the dry gas inlet is connected.
  • the combustion gas at 270 degrees Celsius to 280 degrees Celsius generated by the combustion of the supplementary burner is sent to the mixed waste primary drying device for waste drying.
  • the moisture content of the mixed garbage is greater than or equal to 80%, and the mixed garbage is a mixture of kitchen waste and domestic sludge with a weight ratio of 1:1 to 3:1.
  • the advantages and beneficial effects of the present invention include: (1), the waste gas formed by drying the moisture in the garbage and the dried garbage are incinerated together, so as to realize the thorough treatment of the garbage and avoid the garbage Leakage pollutes the environment; (2) Fully waste heat recovery and utilization of the flue gas heat generated by the incineration of garbage, effectively saves energy consumption, and realizes energy recycling; (3) A total of three levels of garbage with different structures are used.
  • the drying device is suitable for the drying of garbage with different moisture content, with low operation cost and simple operation and management; (4) The cold air is heated into hot air through the heat exchanger, which increases the incineration temperature of the mixed garbage incineration device, and the ash content produced is more stable.
  • the supplementary burner can be Further increase the drying temperature of the mixed garbage primary drying device and improve the garbage drying efficiency.
  • FIG. 1 is a schematic structural diagram of a high-moisture mixed waste treatment system composed of kitchen waste and water-containing sludge according to the present invention.
  • FIG. 2 is a schematic cross-sectional view of the air cap of the mixed garbage primary drying device of the present invention.
  • FIG. 3 is a schematic cross-sectional structure diagram of the mixed garbage secondary drying device of the present invention.
  • the high-moisture mixed garbage disposal system includes: mixed garbage storage device 10, mixed garbage primary drying device 20, mixed garbage secondary drying device 30, mixed garbage Incinerator 40 and vacuum drying device 80 .
  • the mixed garbage storage device 10 stores mixed garbage with a moisture content of 80% to 90%, such as a mixture of kitchen waste and domestic sludge, which is transported to the mixed garbage primary drying device 20 through the first conveyor belt L1.
  • the mixed garbage primary drying device 20 includes: a mixed garbage primary drying body 200 , a primary drying material inlet 201 , a primary drying material outlet 202 , a drying gas inlet 203 , and a primary exhaust gas outlet 204 .
  • the mixed garbage secondary drying device 30 includes: a mixed garbage secondary drying body 300 , a secondary drying inlet 301 , a secondary drying outlet 302 , a drying gas inlet 303 , a drying gas outlet 304 , and a secondary exhaust gas outlet 305 .
  • the mixed waste incineration device 40 includes: an incinerator 400 , an incinerator inlet 401 , an incinerator outlet (not shown), a combustion-supporting gas inlet 402 , and a flue gas outlet 403 .
  • the vacuum drying device 80 includes: a material inlet 801 , a material outlet 802 and a steam outlet 803 .
  • the secondary desiccant inlet 301 of the mixed waste secondary drying device 30 is connected to the primary desiccant outlet 202 of the mixed waste primary drying device 20 through the transport device L, and the material inlet 801 of the vacuum drying device 80 is connected to the mixed waste secondary drying device
  • the secondary desiccant outlet 302 of the device 30 is connected, the material outlet 802 of the vacuum drying device 80 is connected to the incinerator inlet 401 of the mixed waste incineration device 40 through the second conveyor belt L2, and the steam outlet 803 of the vacuum drying device 80 is connected by a vacuum pump VP is connected to the combustion gas inlet 402 of the mixed waste incinerator 40 .
  • the vacuum pressure of the vacuum drying device 80 is 0.005Mpa
  • the vacuum drying device 80 adopts a multi-stage high-efficiency vacuum pump
  • the vacuum pressure drop is 0.005Mpa, which is much lower than the mixed garbage secondary drying device 30 .
  • the combustion-supporting gas inlet 402 of the mixed waste incineration device 40 is connected to the primary exhaust gas outlet 204 of the mixed waste primary drying device 20, the drying gas outlet 304 and the secondary exhaust gas outlet 305 of the mixed waste secondary drying device 30, and the mixed waste incineration device 40 is connected.
  • the flue gas outlet 403 is connected to the drying gas inlet 203 of the mixed waste primary drying device 20 and the drying gas inlet 303 of the mixed waste secondary drying device 30 .
  • the primary exhaust gas outlet 204 is provided with a fan F
  • the secondary exhaust gas outlet 305 is provided with an exhaust gas vacuum pump WP, so as to realize the effect of introducing exhaust gas into the mixed waste incineration device 40 .
  • the transport device L includes a grab L3 and a beam L4.
  • the mixed garbage with a moisture content of 80% to 90% from the mixed garbage storage device 10 is transported to the mixed garbage primary drying device 20 through the first conveyor belt L1 to be dried to a moisture content of 40% to 50%, and then passed through the grab bucket.
  • L3 passes through the beam L4 and is transported by the grab bucket L3 to the mixed garbage secondary drying device 30, and then the grab bucket L3 returns to the mixed garbage primary drying device 20 through the beam L4, and continues to grab the primary drying device with a water content of 40% to 50%. Rubbish.
  • the primary drying garbage with a moisture content of 40% to 50% is dried in the mixed garbage secondary drying device 30 to a moisture content of 20% to 25%, and then passes through the vacuum drying device 80 to reduce the moisture content of the mixed garbage to 10% Next, it is transported to the mixed waste incineration device 40 through the second conveyor belt L2 for incineration, and the generated flue gas is returned to the mixed waste primary drying device 20 and the mixed waste secondary drying device 30 to dry the waste. .
  • a mixer 50 is provided at the gas-supporting inlet 402 of the mixed waste incineration device 40 , and the inlet of the mixer 50 (not shown in the figure) is connected to the primary exhaust gas outlet 204 of the mixed waste primary drying device 20 .
  • the drying gas outlet 304 of the mixed waste secondary drying device 30 is connected with the secondary exhaust gas outlet 305 , and the outlet of the mixer 50 (not marked in the figure) is connected with the combustion gas inlet 402 of the mixed waste incineration device 40 .
  • a fan F is provided at the outlet of the mixer 50 , so that the combustion-assistant gas is introduced into the combustion-assistant gas inlet 402 of the mixed waste incineration device 40 .
  • a heat exchanger 60 is provided at the flue gas outlet 403 of the mixed waste incineration device 40, which includes: a heat exchanger body 600, a cold air inlet 601, a hot air outlet 602, and a high temperature flue gas inlet 603 , and the medium temperature flue gas outlet 604 .
  • the cold air inlet 601 is connected with a fan F
  • the hot air outlet 602 is connected with the inlet (not marked in the figure) of the mixer 50
  • the high temperature flue gas inlet 603 is connected with the flue gas outlet 403 of the mixed waste incineration device 40.
  • the air outlet 604 is connected to the drying air inlet 203 of the mixed garbage primary drying device 20 and the drying air inlet 303 of the mixed garbage secondary drying device 30 .
  • the hot air volume from the hot air outlet 602 of the heat exchanger 60 is set to account for 30% to 50% of the total air intake volume of the combustion gas inlet 402 of the mixed waste incineration device 40, for example, it can be set to about 35%,
  • the mixed waste incineration device 40 can achieve high temperature and low oxygen combustion.
  • the medium temperature flue gas outlet 604 is connected to the drying gas inlet 203 of the mixed waste primary drying device 20 and the drying gas inlet 303 of the mixed waste secondary drying device 30 through the first flue gas pipeline G1.
  • the gas pipeline G1 is provided with a first flue gas fan F1 and a first flue gas valve V1
  • the medium-temperature flue gas outlet 604 is also connected with the chimney Y through a second flue gas pipeline G2, and a second flue gas pipeline G2 is provided on the second flue gas pipeline G2.
  • the second flue gas valve V2 and the second flue gas fan F2 can control the flow rate and speed of the medium-temperature flue gas entering the mixed waste primary drying device 20 and the mixed waste secondary drying device 30.
  • the air at 20-25 degrees Celsius from the atmosphere exchanges heat with the flue gas at 350-360 degrees Celsius generated by the mixed waste incinerator 40 through the heat exchanger 60 to form hot air at 250-260 degrees Celsius, which is then sent to the mixer In 50, the mixed waste incineration device is used for combustion, which improves the combustion efficiency of the waste and ensures the stability of the temperature in the incinerator.
  • the flue gas at 240-250 degrees Celsius formed after heat exchange is returned to the mixed waste primary drying device. 20 and the mixed garbage secondary drying device 30 to dry the garbage.
  • the primary drying inlet 201 of the mixed waste primary drying device 20 is set above one side of the mixed waste primary drying body 200, and the primary exhaust gas outlet 204 is set at the mixed waste Above the other side of the primary drying body 200, the drying gas inlet 203 is set at the bottom end of the mixed waste primary drying body 200, and the primary drying material outlet 202 is set at the top of the mixed waste primary drying body 200.
  • the bottom plate 205 is provided with a number of evenly distributed through holes 206, Each through hole 206 is provided with an upwardly protruding cone-shaped hood 207 . As shown in FIG. 2 , a plurality of air holes 208 are opened on the peripheral wall of each air cap 207 , so that drying air can enter the garbage drying area H from each air eye 208 to perform preliminary drying of the garbage.
  • the mixed garbage secondary drying device 30 is a vacuum drying device with a vacuum pressure of 0.02 Mpa, and the secondary drying material inlet 301 is provided at the top of the mixed garbage secondary drying body 300 In the center, the secondary drying material outlet 302 is set at the center of the bottom end of the mixed waste secondary drying body 300, the drying gas inlet 303 is set on the bottom side of the mixed waste secondary drying body 300, and the drying gas outlet 304 is set at the mixed waste secondary drying body 300.
  • the secondary exhaust gas outlet 305 is arranged above one side of the secondary drying body 300 for mixed waste, and a number of air inlet pipes 306 are arranged on the inner wall of the secondary drying body 300 for mixed waste (as shown in the figure).
  • the adjacent air inlet pipes are connected end to end, forming a ring structure similar to a radiator group with a tail end opening and a top end opening at both ends, and the air inlet pipes that are not connected to the tail end (with a tail end opening) are formed.
  • 306A is communicated with the drying gas inlet 303
  • the air inlet pipe 306B that is not connected to the top (with the top opening) communicates with the drying gas outlet 304 .
  • a supplementary combustion device 70 is further included between the drying gas inlet 203 of the mixed waste primary drying device 20 and the medium temperature flue gas outlet 604 of the heat exchange device 60 , and the supplementary combustion device 70 includes : the supplementary combustion body 700 , the first gas inlet 701 , the second gas inlet 702 , and the combustion gas outlet 703 , the first gas inlet 701 is communicated with the methane gas source, and the second gas inlet 702 is connected with the medium temperature flue gas of the heat exchange device 60
  • the outlet 604 is communicated with, and the combustion gas outlet 703 is communicated with the drying gas inlet 203 of the mixed garbage primary drying device 20 .
  • the combustion gas at 270-280 degrees Celsius generated by the combustion of the afterburner can be sent to the mixed garbage primary drying device 20 for garbage drying.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Processing Of Solid Wastes (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

一种由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其包括：混合垃圾存储装置（10）、混合垃圾初级干燥装置（20）以及混合垃圾焚烧装置（40），其中，混合垃圾初级干燥装置（20）包括：混合垃圾初级干燥本体（200）、初级干燥物入口（201）、初级干燥物出口（202）、烘干气入口（203）、以及初级废气出口（204），混合垃圾存储装置（10）的排出口通过第一运输带（L1）与混合垃圾初级干燥装置（20）的初级干燥物入口（201）相连接；混合垃圾焚烧装置（40）包括：焚烧炉（400）、焚烧物入口（401）、焚烧物出口、助燃气入口（402）、烟气出口（403），焚烧物入口（401）与混合垃圾初级干燥装置（20）的初级干燥物出口（202）通过第二运输带（L2）相连接，助燃气入口（402）与混合垃圾初级干燥装置（20）的初级废气出口（204）相连接，烟气出口（403）与混合垃圾初级干燥装置（20）的烘干气入口（203）相连接。

Description

由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统 技术领域
本发明涉及垃圾处理领域，具体为一种由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统。
背景技术
随着人口数量持续增加、城市化进程加快和生活水平的提高，近年来，城市垃圾数量迅猛增加。我国城市垃圾无害化处置主要有三种方式：填埋、焚烧和堆肥。我国生活垃圾处理主要是以填埋为主，焚烧和堆肥的比例较少，但是焚烧的比例每年都在增长。焚烧相比填埋具有减容、减量、以及能源再次利用等优点。如果继续以填埋为主，在不久的将来，更多城市将被垃圾所包围，这就迫使我国加快垃圾焚烧厂的建设速度。
城市生活垃圾涉及的厨余垃圾及污泥垃圾中均含有大量的水分，因此，这些垃圾在进行焚烧处理时必须经过干燥去水的过程，在去除这些水分时，不仅需要大量的热量对垃圾进行烘干处理，而且烘干后产生的废气也需要经过恰当的处理才可排放至大气中，以避免对环境造成二次污染。
另外，高含水量垃圾在焚烧过程中，需要耗费能源，垃圾处理成本高；垃圾焚烧炉在相对较低的温度下燃烧垃圾时，产生的灰分多，炉壁容易产生结焦现象，影响垃圾焚烧炉使用寿命和焚烧效率。
因此，提供一种可有效去除垃圾内的水分并实现无污染式、节约能源式的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统成为业内急需解决的问题。
发明内容
本发明的目的在于克服以上现有技术存在的不足，提供一种可以有效去除垃圾内的水分，并充分利用垃圾焚烧热量，实现能量循环、环境保护的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统。
为达到上述目的，本发明提供了一种由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其包括：依次连接的混合垃圾存储装置、混合垃圾初级干燥装置、以及混合垃圾焚烧装置，其中，混合垃圾初级干燥装置包括：混合垃圾初级干燥本体、设于混合垃圾初级干燥本体上的初级干燥物入口、初级干燥物出口、烘干气入口、以及初级废气出口，混合垃圾存储装置的排出口通过第一运输带与混合垃圾初级干燥装置的初级干燥物入口相连接；混合垃圾焚烧装置包括：焚烧炉、设于焚烧炉上的焚烧物入口、焚烧物出口、助燃气入口、烟气出口，助燃气入口与混合垃圾初级干燥装置的初级废气出口相连接，烟气出口与混合垃圾初级干燥装置的烘干气入口相连接。
优选地，混合垃圾初级干燥装置的初级废气出口处设有风机以向混合垃圾焚烧装置中导入废气。
可选择地，混合垃圾初级干燥装置与混合垃圾焚烧装置之间还包括混合垃圾二级干燥装置，混合垃圾二级干燥装置包括：混合垃圾二级干燥本体、设于二级干燥本体上的二级干燥物入口、二级干燥物出口、干燥气入口、干燥气出口、以及二级废气出口，其中，二级干燥物入口通过运输装置与混合垃圾初级干燥装置的初级干燥物出口相连接，二级干燥物出口通过第二运输带与混合垃圾焚烧装置的焚烧物入口相连接，干燥气入口与混合垃圾焚烧装置的烟气出口相连接，干燥气出口及二级废气出口分别与混合垃圾焚烧装置的助燃气入口相连接。
优选地，运输装置包括抓斗及横梁，混合垃圾经混合垃圾初级干燥装置烘干后，再通过抓斗经过横梁再由抓斗输送至混合垃圾二级干燥装置，随后抓斗又经横梁回到混合垃圾初级干燥装置，继续完成混合垃圾的抓取。
优选地，二级废气出口处设有废气真空泵以向混合垃圾焚烧装置中导入废气。
可选择地，混合垃圾二级干燥装置与混合垃圾焚烧装置之间设有真空干燥装置，真空干燥装置的物料入口与混合垃圾二级干燥装置的二级干燥物出口相连接，真空干燥装置的物料出口与混合垃圾焚烧装置的焚烧物入口相连接，真空干燥装置的蒸汽出口通过真空泵与混合垃圾焚烧装置的助燃气入口相连接。
可选择地，来自混合垃圾存储装置的含水量80％～90％的垃圾通过第一运输带输送至混合垃圾初级干燥装置烘干至含水量为40％～50％后，再通过运输装置输送至混合垃圾二级干燥装置，烘干至含水量为20％～25％后，再通过真空干燥装置，使得混合垃圾的含水率降到10％以下，然后再通过第二运输带输送至混合垃圾焚烧装置进行焚烧，产生的烟气再回输至混合垃圾初级干燥装置及混合垃圾二级干燥装置对垃圾进行烘干。
可选择地，混合垃圾焚烧装置的助燃气入口处设有混合器，混合器的入口与混合垃圾初级干燥装置的初级废气出口、混合垃圾二级干燥装置的二级废气出口、混合垃圾二级干燥装置的干燥气出口相连接，混合器的出口与混合垃圾焚烧装置的助燃气入口相连接。
优选地，混合器的出口处设有风机以向混合垃圾焚烧装置的助燃气入口导入助燃气。
可选择地，混合垃圾焚烧装置的烟气出口处设有换热器，换热器包括：换热器本体、设于换热器本体上的冷空气入口、热空气出口、高温烟气入口、以及中温烟气出口，冷空气入口处连接有风机，热空气出口与混合器的入口相连接，高温烟气入口与混合垃圾焚烧装置的烟气出口相连接，中温烟气出口通过第一烟气管线与混合垃圾初级干燥装置的烘干气入口及混合垃圾二级干燥装置的干燥气入口相连接。
优选地，第一烟气管线上设有第一烟气风机及第一烟气阀门以控制向混合垃圾初级干燥装置及混合垃圾二级干燥装置导入中温烟气。
优选地，中温烟气出口处还通过第二烟气管线与烟囱相连接，第二烟气管线上设有第二烟气阀门及第二烟气风机。
可选择地，来自大气的20摄氏度～25摄氏度的空气通过换热器与混合垃圾焚烧装置产生的350摄氏度～360摄氏度的烟气进行换热，形成250摄氏度～260摄氏度的热空气，再输送至混合器中，对混合垃圾焚烧 装置进行助燃，提高混合垃圾的燃烧效率，换热后形成的240摄氏度～250摄氏度的烟气再回输至混合垃圾初级干燥装置及混合垃圾二级干燥装置对垃圾进行烘干。
可选择地，混合垃圾初级干燥装置的烘干气入口设于混合垃圾初级干燥本体的底端，初级废气出口设于混合垃圾初级干燥本体的顶端，初级干燥物入口设于混合垃圾初级干燥本体的一侧上方，初级干燥物出口设于混合垃圾初级干燥本体的另一侧上方。
可选择地，混合垃圾初级干燥本体的内部下方设有底板以将混合垃圾初级干燥本体的内腔分为位于上部的垃圾烘干区和位于下部的气体循环区，底板上开设有若干个均匀分布的通孔，每个通孔上设有向上凸起的锥形台状的风帽，每个风帽的周壁开设有若干的风眼，以将通过烘干气入口进入的烘干气，自每个风眼进入垃圾烘干区内对垃圾进行初步烘干。
可选择地，混合垃圾二级干燥装置为真空干燥装置，二级干燥物入口设于混合垃圾二级干燥本体的顶端中央，二级干燥物出口设于混合垃圾二级干燥本体的底端中央，干燥气入口设于混合垃圾二级干燥本体的底端一侧，干燥气出口设于混合垃圾二级干燥本体的顶端一侧，二级废气出口设于混合垃圾二级干燥本体的一侧上方，于混合垃圾二级干燥本体的内壁环设有若干个进风管，相邻的进风管首尾相连通，未连通尾端的进风管与干燥气入口相连通，未连通顶端的进风管与干燥气出口相连通。
可选择地，混合垃圾初级干燥装置的烘干气入口与换热装置的中温烟气出口之间还包括补燃装置，补燃装置包括：补燃本体、设于补燃本体上的第一气体入口、第二气体入口、以及燃烧气体出口，第一气体入口与甲烷气体源相连通，第二气体入口与换热装置的中温烟气出口相连通，燃烧气体出口与混合垃圾初级干燥装置的烘干气入口相连通。
可选择地，通过补燃器燃烧产生的270摄氏度～280摄氏度的燃烧气体输送至混合垃圾初级干燥装置进行垃圾烘干。
可选择地，混合垃圾的含水率为大于或等于80％，混合垃圾为重量比为1:1～3:1的厨余垃圾和生活污泥的混合物。
与现有技术相比，本发明的优点和有益效果包括：(1)、将垃圾中的 水分烘干形成的废气与烘干后的垃圾共同进行焚烧，实现了垃圾的彻底处理，避免了垃圾泄露污染环境；(2)、充分地对焚烧垃圾产生的烟气热量进行余热回收利用，有效地节约能源消耗，实现能量的循环利用；(3)、共使用了三个级别且不同构造的垃圾干燥装置，适应不同水分含量的垃圾烘干，运行成本低，运行管理简便；(4)、通过换热器将冷空气加热为热空气，提高了混合垃圾焚烧装置的焚烧温度，产生的灰分，降低了炉壁产生的结焦现象，提高了混合垃圾焚烧装置的使用寿命和焚烧效率，同时减少了垃圾焚烧过程中氮氧化物的产生，降低了污染物的产量；(5)、补燃器可进一步提高混合垃圾初级干燥装置的烘干温度，提高垃圾烘干效率。
附图说明
图1为本发明的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统的结构示意图。
图2为本发明的混合垃圾初级干燥装置的风帽的截面示意图。
图3为本发明的混合垃圾二级干燥装置的横截面结构示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
请参考图1，作为一种非限制性实施方式，本发明提供的高含水量混合垃圾处理系统包括：混合垃圾存储装置10、混合垃圾初级干燥装置20、混合垃圾二级干燥装置30、混合垃圾焚烧装置40以及真空干燥装置80。
混合垃圾存储装置10中存储有含水量80％～90％的混合垃圾，比如厨余垃圾和生活污泥的混合物，这些垃圾通过第一运输带L1运送至混合垃圾初级干燥装置20处。
混合垃圾初级干燥装置20包括：混合垃圾初级干燥本体200、初级干燥物入口201、初级干燥物出口202、烘干气入口203、以及初级废气出口204。
混合垃圾二级干燥装置30包括：混合垃圾二级干燥本体300、二级干燥物入口301、二级干燥物出口302、干燥气入口303、干燥气出口304、以及二级废气出口305。
混合垃圾焚烧装置40包括：焚烧炉400、焚烧物入口401、焚烧物出口(图未示)、助燃气入口402、烟气出口403。
真空干燥装置80包括：物料入口801、物料出口802以及蒸汽出口803。
其中，混合垃圾二级干燥装置30的二级干燥物入口301通过运输装置L与混合垃圾初级干燥装置20的初级干燥物出口202相连接，真空干燥装置80的物料入口801与混合垃圾二级干燥装置30的二级干燥物出口302相连接，真空干燥装置80的物料出口802通过第二运输带L2与混合垃圾焚烧装置40的焚烧物入口401相连接，真空干燥装置80的蒸汽出口803通过真空泵VP与混合垃圾焚烧装置40的助燃气入口402相连接。
在该非限制性实施方式中，真空干燥装置80的真空压力为0.005Mpa，真空干燥装置80采用多级高效真空泵，真空压力下降为0.005Mpa，远低于混合垃圾二级干燥装置30。由此，混合垃圾中的水分无需加热就可以进一步快速蒸发，使得混合垃圾的含水率降到10％以下。
混合垃圾焚烧装置40的助燃气入口402与混合垃圾初级干燥装置20的初级废气出口204、混合垃圾二级干燥装置30的干燥气出口304及二级废气出口305相连接，混合垃圾焚烧装置40的烟气出口403与混合垃圾初级干燥装置20的烘干气入口203及混合垃圾二级干燥装置30的干燥气入口303相连接。为了实现气体的定向流动，初级废气出口204处设有风机F、二级废气出口处305设有废气真空泵WP，从而实现向混合垃圾焚烧装置40中导入废气的效果。
在该非限制性实施方式中，运输装置L包括抓斗L3及横梁L4。由此，来自混合垃圾存储装置10的含水量80％～90％的混合垃圾通过第一 运输带L1输送至混合垃圾初级干燥装置20烘干至含水量为40％～50％后，通过抓斗L3经过横梁L4再由抓斗L3输送至混合垃圾二级干燥装置30，随后抓斗L3又经横梁L4回到混合垃圾初级干燥装置20，继续抓取含水量为40％～50％的初级干燥垃圾。含水量40％～50％的初级干燥垃圾在混合垃圾二级干燥装置30中烘干至含水量为20％～25％后，再通过真空干燥装置80，使得混合垃圾的含水率降到10％以下，然后再通过第二运输带L2输送至混合垃圾焚烧装置40处进行焚烧，产生的烟气再回输至混合垃圾初级干燥装置20及混合垃圾二级干燥装置30中，对垃圾进行烘干。
作为另一种非限制性实施方式，混合垃圾焚烧装置40的助燃气入口402处设有混合器50，混合器50的入口(图中未标示)与混合垃圾初级干燥装置20的初级废气出口204、混合垃圾二级干燥装置30的干燥气出口304和二级废气出口305相连接，混合器50的出口(图中未标示)与混合垃圾焚烧装置40的助燃气入口402相连接。同样地，混合器50的出口处设有风机F，从而向混合垃圾焚烧装置40的助燃气入口402导入助燃气。
在该非限制性实施方式中，混合垃圾焚烧装置40的烟气出口403处设有换热器60，其包括：换热器本体600、冷空气入口601、热空气出口602、高温烟气入口603、以及中温烟气出口604。冷空气入口601处连接有风机F，热空气出口602与混合器50的入口(图中未标示)相连接，高温烟气入口603与混合垃圾焚烧装置40的烟气出口403相连接，中温烟气出口604与混合垃圾初级干燥装置20的烘干气入口203及混合垃圾二级干燥装置30的干燥气入口303相连接。其中，来自换热器60的热空气出口602的热空气量设定为占混合垃圾焚烧装置40的助燃气入口402的总进风量的30％～50％，比如可设定为约35％，使得混合垃圾焚烧装置40可实现高温低氧燃烧。
如图1所示，中温烟气出口604通过第一烟气管线G1与混合垃圾初级干燥装置20的烘干气入口203及混合垃圾二级干燥装置30的干燥气入口303相连接，第一烟气管线G1上设有第一烟气风机F1及第一烟气阀门V1，中温烟气出口604处还通过第二烟气管线G2与烟囱Y相连接，第二烟气管线G2上设有第二烟气阀门V2及第二烟气风机F2，从而可以控制中温烟气进入混合垃圾初级干燥装置20及混合垃圾二级 干燥装置30的流量和速度，当不需要大量中温烟气时，便可将烟气排放至烟囱Y处。
由此，来自大气的20～25摄氏度的空气通过换热器60与混合垃圾焚烧装置40产生的350～360摄氏度的烟气进行换热，形成250～260摄氏度的热空气，再输送至混合器50中，对混合垃圾焚烧装置进行助燃，提高了垃圾的燃烧效率，也保证了焚烧炉内的温度的稳定，换热后形成的240～250摄氏度的烟气再回输至混合垃圾初级干燥装置20及混合垃圾二级干燥装置30对垃圾进行烘干。
在又一种非限制性实施方式中，如图1所示，混合垃圾初级干燥装置20的初级干燥物入口201设于混合垃圾初级干燥本体200的一侧上方，初级废气出口204设于混合垃圾初级干燥本体200的另一侧上方，烘干气入口203设于混合垃圾初级干燥本体200的底端，初级干燥物出口202设于混合垃圾初级干燥本体200的顶端，混合垃圾初级干燥本体200的内部下方设有底板205，从而将混合垃圾初级干燥本体的内腔分为位于上部的垃圾烘干区H和位于下部的气体循环区X，底板205上开设有若干个均匀分布的通孔206，每个通孔206上设有向上凸起的锥形台状的风帽207。如图2所示，每个风帽207的周壁开设有若干的风眼208，从而烘干气可以自每个风眼208进入垃圾烘干区H内对垃圾进行初步烘干。
在该非限制性实施方式中，如图1所示，混合垃圾二级干燥装置30为真空压力为0.02Mpa的真空干燥装置，二级干燥物入口301设于混合垃圾二级干燥本体300的顶端中央，二级干燥物出口302设于混合垃圾二级干燥本体300的底端中央，干燥气入口303设于混合垃圾二级干燥本体300的底端一侧，干燥气出口304设于混合垃圾二级干燥本体300的顶端一侧，二级废气出口305设于混合垃圾二级干燥本体300的一侧上方，于混合垃圾二级干燥本体300的内壁环设有若干个进风管306(如图3所示)，相邻的进风管首尾相连通，形成两头分别设有尾端开口和顶端开口的类似暖气片组的环形结构，未连通尾端(设有尾端开口)的进风管306A与干燥气入口303相连通，未连通顶端(设有顶端开口)的进风管306B与干燥气出口304相连通。
作为再一种实施方式，如图1所示，混合垃圾初级干燥装置20的烘干气入口203与换热装置60的中温烟气出口604之间还包括补燃装置 70，补燃装置70包括：补燃本体700、第一气体入口701、第二气体入口702、以及燃烧气体出口703，第一气体入口701与甲烷气体源相连通，第二气体入口702与换热装置60的中温烟气出口604相连通，燃烧气体出口703与混合垃圾初级干燥装置20的烘干气入口203相连通。由此，通过补燃器燃烧产生的270～280摄氏度的燃烧气体便可输送至混合垃圾初级干燥装置20中进行垃圾烘干。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，包括：依次连接的混合垃圾存储装置、混合垃圾初级干燥装置以及混合垃圾焚烧装置，所述混合垃圾初级干燥装置包括：混合垃圾初级干燥本体、设于所述混合垃圾初级干燥本体上的初级干燥物入口、初级干燥物出口、烘干气入口、以及初级废气出口，所述混合垃圾存储装置的排出口通过第一运输带与所述混合垃圾初级干燥装置的初级干燥物入口相连接；所述混合垃圾焚烧装置包括：焚烧炉、设于所述焚烧炉上的焚烧物入口、焚烧物出口、助燃气入口、烟气出口，所述助燃气入口与所述混合垃圾初级干燥装置的初级废气出口相连接，所述烟气出口与所述混合垃圾初级干燥装置的烘干气入口相连接；
    其特征在于，所述混合垃圾初级干燥装置与所述混合垃圾焚烧装置之间还包括混合垃圾二级干燥装置，所述混合垃圾二级干燥装置包括：混合垃圾二级干燥本体、设于所述混合垃圾二级干燥本体上的二级干燥物入口、二级干燥物出口、干燥气入口、干燥气出口、以及二级废气出口，其中，所述二级干燥物入口通过运输装置与所述混合垃圾初级干燥装置的初级干燥物出口相连接，所述二级干燥物出口通过第二运输带与所述混合垃圾焚烧装置的焚烧物入口相连接，所述干燥气入口与所述混合垃圾焚烧装置的烟气出口相连接，所述干燥气出口及所述二级废气出口分别与所述混合垃圾焚烧装置的助燃气入口相连接。
  2. 根据权利要求1所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，所述混合垃圾二级干燥装置与混合垃圾焚烧装置之间设有真空干燥装置，所述真空干燥装置的物料入口与所述混合垃圾二级干燥装置的二级干燥物出口相连接，所述真空干燥装置的物料出口与所述混合垃圾焚烧装置的焚烧物入口相连接，所述真空干燥装置的蒸汽出口通过真空泵与所述混合垃圾焚烧装置的助燃气入口相连接。
  3. 根据权利要求2所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，所述混合垃圾焚烧装置的助燃气入口处设有混合器，所述混合器的入口与所述混合垃圾初级干燥装置的初级废 气出口、所述混合垃圾二级干燥装置的二级废气出口、所述混合垃圾二级干燥装置的干燥气出口相连接，所述混合器的出口与所述混合垃圾焚烧装置的助燃气入口相连接。
  4. 根据权利要求3所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，所述混合垃圾焚烧装置的烟气出口处设有换热器，所述换热器包括：换热器本体、设于所述换热器本体上的冷空气入口、热空气出口、高温烟气入口、以及中温烟气出口，所述冷空气入口处连接有风机，所述热空气出口与所述混合器的入口相连接，所述高温烟气入口与所述混合垃圾焚烧装置的烟气出口相连接，所述中温烟气出口通过第一烟气管线与所述混合垃圾初级干燥装置的烘干气入口及所述混合垃圾二级干燥装置的干燥气入口相连接。
  5. 根据权利要求4所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，来自大气的20～25摄氏度的空气通过换热器与所述混合垃圾焚烧装置产生的350～360摄氏度的烟气进行换热，形成250～260摄氏度的热空气，再输送至混合器中，对所述混合垃圾焚烧装置进行助燃，换热后形成的240～250摄氏度的烟气再回输至所述混合垃圾初级干燥装置及所述混合垃圾二级干燥装置对垃圾进行烘干。
  6. 根据权利要求5所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，所述混合垃圾初级干燥本体的内部下方设有底板以将所述混合垃圾初级干燥本体的内腔分为位于上部的垃圾烘干区和位于下部的气体循环区，所述底板上开设有若干个均匀分布的通孔，每个所述通孔上设有向上凸起的锥形台状的风帽，每个所述风帽的周壁开设有若干的风眼，以将通过所述烘干气入口进入的烘干气，自每个所述风眼进入所述垃圾烘干区内对垃圾进行初步烘干。
  7. 根据权利要求6所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，所述混合垃圾二级干燥装置为真空干燥器，所述二级干燥物入口设于所述混合垃圾二级干燥本体的顶端中央，所述二级干燥物出口设于所述混合垃圾二级干燥本体的底端中央，所述干燥气入口设于所述混合垃圾二级干燥本体的底端一侧，所述干燥气出 口设于所述混合垃圾二级干燥本体的顶端一侧，所述二级废气出口设于所述混合垃圾二级干燥本体的一侧上方，于所述混合垃圾二级干燥本体的内壁环设有若干个进风管，相邻的所述进风管首尾相连通，未连通尾端的进风管与所述干燥气入口相连通，未连通顶端的进风管与所述干燥气出口相连通。
  8. 根据权利要求7所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，所述混合垃圾初级干燥装置的烘干气入口与所述换热装置的中温烟气出口之间还包括补燃装置，所述补燃装置包括：补燃本体、设于补燃本体上的第一气体入口、第二气体入口、以及燃烧气体出口，所述第一气体入口与甲烷气体源相连通，所述第二气体入口与所述换热装置的中温烟气出口相连通，所述燃烧气体出口与所述混合垃圾初级干燥装置的烘干气入口相连通。
  9. 根据权利要求8所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，通过所述补燃器燃烧产生的270～280摄氏度的燃烧气体输送至所述混合垃圾初级干燥装置进行垃圾烘干。
  10. 根据权利要求1～9任一项所述的由餐厨垃圾和含水污泥组成的高水份混合垃圾处理系统，其特征在于，所述混合垃圾的含水率为大于或等于80％，所述混合垃圾为重量比为1:1～3:1的厨余垃圾和生活污泥的混合物。
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