WO2021243586A1 - 一种垃圾焚烧炉水冷炉墙 - Google Patents

一种垃圾焚烧炉水冷炉墙 Download PDF

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Publication number
WO2021243586A1
WO2021243586A1 PCT/CN2020/094059 CN2020094059W WO2021243586A1 WO 2021243586 A1 WO2021243586 A1 WO 2021243586A1 CN 2020094059 W CN2020094059 W CN 2020094059W WO 2021243586 A1 WO2021243586 A1 WO 2021243586A1
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Prior art keywords
wall
water
side wall
cooled
grate
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PCT/CN2020/094059
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English (en)
French (fr)
Inventor
袁真强
邹金生
罗培钟
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深圳市能源环保有限公司
深圳市深能环保东部有限公司
深圳市深能环保城市环境服务有限公司
潮州深能环保有限公司
桂林市深能环保有限公司
武汉深能环保新沟垃圾发电有限公司
单县深能环保有限公司
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Publication of WO2021243586A1 publication Critical patent/WO2021243586A1/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
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage

Definitions

  • the invention relates to garbage incineration boiler equipment, in particular to a water-cooled furnace wall of a garbage incinerator.
  • the present invention proposes a water-cooled furnace wall for a waste incinerator, which includes a drying section side wall and a combustion section side wall corresponding to the drying grate, the combustion grate, and the incineration grate, respectively.
  • the side wall of the combustion section adopts a water-cooled furnace wall
  • the flue gas temperature in the furnace is reduced, and the overall temperature in the furnace is lowered, which is beneficial to prolong the life of the furnace wall
  • the flue gas distribution in the furnace is more uniform, which is beneficial to the downstream heating surface Heat exchange and safe operation
  • the water-cooled furnace wall has a simpler structure and lower cost than the air-cooled furnace wall. It can reduce the construction cost of waste incineration power plants and effectively ensure the safe operation of waste incinerators.
  • the technical solution adopted by the present invention to solve the technical problem is a water-cooled furnace wall of a garbage incinerator, which includes a drying section side wall, a combustion section side wall, and a combustion grate respectively corresponding to the drying grate, the combustion grate, and the incineration grate.
  • the side walls corresponding to the drying grate and the ember grate are insulated furnace walls.
  • the joint of the insulated furnace wall and the water-cooled furnace wall adopts a labyrinth-type furnace wall expansion joint for sealing.
  • the side walls, the front side walls and the rear side walls corresponding to the drying grate and the ember grate are also water-cooled furnace walls.
  • an expansion joint is used to connect the joint between the combustion grate and the water-cooled furnace wall.
  • the water-cooled walls of the side walls of the drying section, the side walls of the combustion section, and the side walls of the burning section adopt a built-up welding anticorrosive structure, and the front and rear walls adopt a water-cooled wall + castable anticorrosive structure .
  • the water-cooled furnace wall of a garbage incinerator proposed by the present invention includes a drying section side wall, a combustion section side wall, and a combustion grate corresponding to the drying grate, the combustion grate, and the incineration grate.
  • the side wall system composed of the section side wall, the front side wall and the rear side wall, and the furnace top wall system composed of the front arch water wall and the rear arch water wall.
  • the side wall of the combustion section adopts a water-cooled furnace wall
  • the flue gas temperature in the furnace is reduced, and the overall temperature in the furnace is lowered, which is beneficial to prolong the life of the furnace wall
  • the flue gas distribution in the furnace is more uniform, which is beneficial to the downstream heating surface Heat exchange and safe operation
  • the water-cooled furnace wall has a simpler structure and lower cost than the air-cooled furnace wall. It can reduce the construction cost of waste incineration power plants and effectively ensure the safe operation of waste incinerators.
  • Fig. 1 is a schematic structural diagram of an embodiment of the prior art.
  • Fig. 2 is a schematic diagram of the structure of the first embodiment proposed by the present invention.
  • Fig. 3 is a schematic structural diagram of a second embodiment proposed by the present invention.
  • Fig. 1 is a schematic structural diagram of an embodiment of the prior art.
  • the wall of a waste incinerator includes a drying section side wall 7, a combustion section side wall 8, and a combustion grate corresponding to the drying grate 4, the combustion grate 5, and the incineration grate 6, respectively.
  • the side wall system composed of the section side wall 9 and the front side wall and the rear side wall, and the furnace top wall system composed of the front arch water wall 2 and the rear arch water wall 3.
  • the side wall of the grate adopts a fully insulated furnace wall or a fully air-cooled furnace wall.
  • the combustion grate section will cause the flue gas temperature of this section of the furnace to be very high due to combustion, which poses a great threat to the life of the furnace wall and causes the temperature distribution of the flue gas in the furnace. Extremely uneven, which is not good for the heat exchange and safe operation of the downstream heating surface.
  • a fully air-cooled furnace wall not only the weight is large, but the air cooling piping system is complicated, the installation is inconvenient and the cost is high.
  • Fig. 2 is a schematic diagram of the structure of the first embodiment proposed by the present invention.
  • a water-cooled furnace wall of a waste incinerator includes a drying section side wall 7, a combustion section side wall 8, and a side wall corresponding to the drying grate 4, the combustion grate 5, and the incineration grate 6, respectively.
  • the side wall system composed of the side wall 9 of the burning section, the front side wall and the rear side wall, and the hearth top wall system composed of the front arch water wall 2 and the rear arch water wall 3.
  • the side wall 8 of the combustion section adopts a water-cooled furnace wall, and the other side walls adopt an adiabatic furnace wall.
  • the combustion grate and the water-cooled furnace wall are connected by an expansion joint at the joint; the adiabatic furnace wall and the water-cooled furnace wall are sealed by a labyrinth-type furnace wall expansion joint 10 at the joint.
  • Fig. 3 is a schematic structural diagram of a second embodiment proposed by the present invention. As shown in the figure, the difference from the first embodiment is that in this example, all side walls adopt water-cooled furnace walls at the same time.
  • the present invention suggests that the water-cooled walls of the side wall 7 of the drying section, the side wall 8 of the burning section and the side wall 9 of the burning section adopt a built-up welding anticorrosive structure.
  • the front side wall and the back side wall adopt the anticorrosive structure of water wall + castable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)

Abstract

一种垃圾焚烧炉水冷炉墙，包括由分别对应于干燥炉排（4）、燃烧炉排（5）、燃烬炉排（6）的干燥段侧墙（7）、燃烧段侧墙（8）、燃烬段侧墙（9）以及前侧墙、后侧墙构成的侧墙系统，和由前拱水冷壁（2）、后拱水冷壁（3）构成的炉膛顶墙系统。由于燃烧段侧墙（8）采用了水冷炉墙，降低了该处炉膛（1）的烟气温度，使炉膛（1）内总体温度下降，有利于延长炉墙的寿命；炉膛（1）内烟气分布更均匀，有利于下游受热面的换热和安全运行；水冷炉墙比空冷炉墙结构简单，成本低。

Description

一种垃圾焚烧炉水冷炉墙 技术领域
本发明涉及垃圾焚烧锅炉设备，特别涉及一种垃圾焚烧炉水冷炉墙。
背景技术
随着国民经济的快速发展和人民生活水平的日益提高，在生产和生活中产生的垃圾越来越多，对城市的垃圾处理能力提出了严峻的挑战。在各种垃圾处理方法中，焚烧以其在减量化和无害化方面的彻底性占据了优势。在现有的垃圾焚烧炉中，炉膛下部全部采用绝热炉墙或者空冷炉墙的居多。全部采用绝热炉墙时，燃烧炉排段由于燃烧而导致这一段炉膛的烟气温度很高，对炉墙的寿命威胁很大，而且造成炉膛内烟气温度分布极不均匀，对于下游受热面的换热和安全运行不利；全部采用空冷炉墙时，不仅重量大，而且空气冷却管路系统复杂，安装不便且造价高。
发明内容
为了克服现有技术中存在的问题，本发明提出的一种垃圾焚烧炉水冷炉墙，包括由分别对应于干燥炉排、燃烧炉排、燃烬炉排的干燥段侧墙、燃烧段侧墙、燃烬段侧墙以及前侧墙、后侧墙构成的侧墙系统，和由前拱水冷壁、后拱水冷壁构成的炉膛顶墙系统。由于燃烧段侧墙采用了水冷炉墙，降低了该处炉膛的烟气温度，使炉膛内总体温度下降，有利于延长炉墙的寿命；炉膛内烟气分布更均匀，有利于下游受热面的换热和安全运行；水冷炉墙比空冷炉墙结构简单，成本低。可以降低垃圾焚烧发电厂的建造成本并有效确保垃圾焚烧炉的安全运行。
本发明解决技术问题采用的技术方案是，一种垃圾焚烧炉水冷炉墙，包括由分别对应于干燥炉排、燃烧炉排、燃烬炉排的干燥段侧墙、燃烧段侧墙、燃烬段侧墙以及前侧墙、后侧墙构成的侧墙系统，和由前拱水冷壁、后拱水冷壁构成的炉膛顶墙系统，其特征在于，所述燃烧炉排对应的侧墙采用水冷炉墙。
本发明优选方案，所述干燥炉排和燃烬炉排对应的侧墙采用绝热炉墙。
本发明优选方案，所述绝热炉墙和水冷炉墙在结合处采用迷宫型炉墙膨胀缝进行密封。
本发明优选方案，所述干燥炉排和燃烬炉排对应的侧墙以及前侧墙、后侧墙都同样采用水冷炉墙。
本发明优选方案，所述燃烧炉排与水冷炉墙结合处采用膨胀节进行连接。
本发明优选方案，所述干燥段侧墙、燃烧段侧墙、燃烬段侧墙的水冷壁采用堆焊的防腐结构，所述前侧墙和后侧墙采用水冷壁+浇注料的防腐结构。
本发明的有益效果是：本发明提出的一种垃圾焚烧炉水冷炉墙，包括由分别对应于干燥炉排、燃烧炉排、燃烬炉排的干燥段侧墙、燃烧段侧墙、燃烬段侧墙以及前侧墙、后侧墙构成的侧墙系统，和由前拱水冷壁、后拱水冷壁构成的炉膛顶墙系统。由于燃烧段侧墙采用了水冷炉墙，降低了该处炉膛的烟气温度，使炉膛内总体温度下降，有利于延长炉墙的寿命；炉膛内烟气分布更均匀，有利于下游受热面的换热和安全运行；水冷炉墙比空冷炉墙结构简单，成本低。可以降低垃圾焚烧发电厂的建造成本并有效确保垃圾焚 烧炉的安全运行。
附图说明：
图1为现有技术一个实施例的结构示意图。
图2为本发明提出的第一个实施例的结构示意图。
图3为本发明提出的第二个实施例的结构示意图。
图中：
1、炉膛；
2、前拱水冷壁；
3、后拱水冷壁；
4、干燥炉排；
5、燃烧炉排；
6、燃烬炉排；
7、干燥段侧墙；
8、燃烧段侧墙；
9、燃烬段侧墙；
10、迷宫型炉墙膨胀缝。
具体实施方式
图1为现有技术一个实施例的结构示意图。图中显示，现有技术中，垃圾焚烧炉炉墙，包括由分别对应于干燥炉排4、燃烧炉排5、燃烬炉排6的干燥段侧墙7、燃烧段侧墙8、燃烬段侧墙9以及前侧墙、后侧墙构成的侧墙系统，和由前拱水冷壁2、后拱水冷壁3构成的炉膛顶墙系统。炉排侧墙采用全绝热炉墙或全空冷炉墙。
但是，现有技术的侧墙全部采用绝热炉墙时，燃烧炉排段由于燃烧而导致这一段炉膛的烟气温度很高，对炉墙的寿命威胁很大，而且造成炉膛内烟气温度分布极不均匀，对于下游受热面的换热和安全运行不利。而采用全空冷炉墙时，不仅重量大，而且空气冷却管路系统复杂，安装不便且造价高。
图2为本发明提出的第一个实施例的结构示意图。图中显示，本例中，一种垃圾焚烧炉水冷炉墙，包括由分别对应于干燥炉排4、燃烧炉排5、燃烬炉排6的干燥段侧墙7、燃烧段侧墙8、燃烬段侧墙9以及前侧墙、后侧墙构成的侧墙系统，和由前拱水冷壁2、后拱水冷壁3构成的炉膛顶墙系统。与现有技术不同的是，燃烧段侧墙8采用水冷炉墙，其它侧墙都采用绝热炉墙。本例中，燃烧炉排与水冷炉墙在结合处采用膨胀节进行连接；绝热炉墙和水冷炉墙在结合处采用迷宫型炉墙膨胀缝10进行密封。
图3为本发明提出的第二个实施例的结构示意图。图中显示，与第一个实施例不同的是，本例中，所有侧墙同时采用水冷炉墙。
本发明提示，干燥段侧墙7、燃烧段侧墙8和燃烬段侧墙9的水冷壁采用堆焊的防腐结构。前侧墙和 后侧墙采用水冷壁+浇注料的防腐结构。

Claims (6)

  1. 一种垃圾焚烧炉水冷炉墙，包括由分别对应于干燥炉排、燃烧炉排、燃烬炉排的干燥段侧墙、燃烧段侧墙、燃烬段侧墙以及前侧墙、后侧墙构成的侧墙系统，和由前拱水冷壁、后拱水冷壁构成的炉膛顶墙系统，其特征在于，所述燃烧炉排对应的侧墙采用水冷炉墙。
  2. 根据权利要求1所述的一种垃圾焚烧炉水冷炉墙，其特征是，所述干燥炉排和燃烬炉排对应的侧墙采用绝热炉墙。
  3. 根据权利要求2所述的一种垃圾焚烧炉水冷炉墙，其特征是，所述绝热炉墙和水冷炉墙在结合处采用迷宫型炉墙膨胀缝进行密封。
  4. 根据权利要求1所述的一种垃圾焚烧炉水冷炉墙，其特征是，所述干燥炉排和燃烬炉排对应的侧墙以及前侧墙、后侧墙都同样采用水冷炉墙。
  5. 根据权利要求1至4任一权利要求所述的一种垃圾焚烧炉水冷炉墙，其特征是，所述燃烧炉排与水冷炉墙结合处采用膨胀节进行连接。
  6. 根据权利要求1至4任一权利要求所述的一种垃圾焚烧炉水冷炉墙，其特征是，所述干燥段侧墙、燃烧段侧墙、燃烬段侧墙的水冷壁采用堆焊的防腐结构，所述前侧墙和后侧墙采用水冷壁+浇注料的防腐结构。
PCT/CN2020/094059 2020-05-30 2020-06-03 一种垃圾焚烧炉水冷炉墙 WO2021243586A1 (zh)

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