阅读说明：本技术 一种垃圾焚烧炉水冷炉墙 (Water-cooling furnace wall of garbage incinerator ) 是由 袁真强 邹金生 罗培钟 于 2020-05-30 设计创作，主要内容包括：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。(In order to overcome the problems in the prior art, the invention provides a water-cooled furnace wall of a garbage incinerator, which comprises a side wall system and a hearth top wall system, wherein the side wall system is composed of a drying section side wall, a combustion section side wall, a front side wall and a rear side wall, and the hearth top wall system is composed of a front arch water-cooled wall and a rear arch water-cooled wall, and the drying section side wall, the combustion section side wall and the combustion section side wall are respectively corresponding to a drying grate, a combustion grate. Because the side wall of the combustion section adopts the water-cooled furnace wall, the temperature of the flue gas in the hearth is reduced, the overall temperature in the hearth is reduced, and the service life of the furnace wall is prolonged; the smoke in the hearth is distributed more uniformly, so that the heat exchange and the safe operation of a downstream heating surface are facilitated; the water-cooled furnace wall has a simpler structure and lower cost than the air-cooled furnace wall. The construction cost of the waste incineration power plant can be reduced and the safe operation of the waste incinerator can be effectively ensured.)

1. A water-cooled furnace wall of a garbage incinerator comprises a side wall system consisting of a drying section side wall, a combustion section side wall, a burnout section side wall, a front side wall and a rear side wall which respectively correspond to a drying grate, a combustion grate and a burnout grate, and a hearth top wall system consisting of a front arch water-cooled wall and a rear arch water-cooled wall.

2. The water-cooled wall of a garbage incinerator according to claim 1, characterized in that the side walls corresponding to the drying grate and the burn-out grate are heat-insulating walls.

3. The water-cooled furnace wall of a garbage incinerator according to claim 2, characterized in that the junction of the heat-insulating furnace wall and the water-cooled furnace wall is sealed by a labyrinth-type furnace wall expansion joint.

4. The water-cooled furnace wall of a garbage incinerator according to claim 1, characterized in that the corresponding side walls of said drying grate and burn-out grate and the front and rear side walls are the same water-cooled furnace wall.

5. The water-cooled furnace wall of a garbage incinerator according to any one of claims 1 to 4, characterized in that the junction of the combustion grate and the water-cooled furnace wall is connected by an expansion joint.

6. The water-cooled furnace wall of the garbage incinerator according to any one of claims 1 to 4, characterized in that the water-cooled walls of the side wall of the drying section, the side wall of the combustion section and the side wall of the burnout section are of a build-up corrosion prevention structure, and the front side wall and the rear side wall are of a water-cooled wall + castable corrosion prevention structure.

Technical Field

The invention relates to a garbage incineration boiler device, in particular to a water-cooled furnace wall of a garbage incinerator.

Background

With the rapid development of national economy and the increasing improvement of the living standard of people, more and more garbage is generated in production and living, and a serious challenge is provided for the garbage disposal capability of cities. Among various waste treatment methods, incineration is advantageous in terms of its thoroughness in terms of reduction and harmlessness. In the existing garbage incinerator, the lower part of a hearth is mostly provided with a heat insulation furnace wall or an air cooling furnace wall. When the heat insulation furnace wall is adopted completely, the temperature of the flue gas of the furnace hearth at the section is very high due to the combustion of the combustion furnace grate section, the service life of the furnace wall is threatened greatly, and the temperature distribution of the flue gas in the furnace hearth is extremely uneven, so that the heat exchange and the safe operation of a downstream heating surface are not facilitated; when all air cooling furnace walls are adopted, the weight is large, an air cooling pipeline system is complex, the installation is inconvenient, and the manufacturing cost is high.

Disclosure of Invention

In order to overcome the problems in the prior art, the invention provides a water-cooled furnace wall of a garbage incinerator, which comprises a side wall system and a hearth top wall system, wherein the side wall system is composed of a drying section side wall, a combustion section side wall, a front side wall and a rear side wall, and the hearth top wall system is composed of a front arch water-cooled wall and a rear arch water-cooled wall, and the drying section side wall, the combustion section side wall and the combustion section side wall are respectively corresponding to a drying grate, a combustion grate. Because the side wall of the combustion section adopts the water-cooled furnace wall, the temperature of the flue gas in the hearth is reduced, the overall temperature in the hearth is reduced, and the service life of the furnace wall is prolonged; the smoke in the hearth is distributed more uniformly, so that the heat exchange and the safe operation of a downstream heating surface are facilitated; the water-cooled furnace wall has a simpler structure and lower cost than the air-cooled furnace wall. The construction cost of the waste incineration power plant can be reduced and the safe operation of the waste incinerator can be effectively ensured.

The technical scheme adopted by the invention for solving the technical problems is that the water-cooled furnace wall of the garbage incinerator comprises a side wall system and a hearth top wall system, wherein the side wall system comprises a drying section side wall, a combustion section side wall, a burnout section side wall, a front side wall and a rear side wall which respectively correspond to a drying grate, a combustion grate and a burnout grate, and the hearth top wall system comprises a front arch water-cooled wall and a rear arch water-cooled wall.

In the preferred scheme of the invention, the side walls corresponding to the drying grate and the burn-out grate, the front side wall and the rear side wall are all thermal insulation furnace walls.

According to the preferable scheme of the invention, the junction of the heat insulation furnace wall and the water cooling furnace wall is sealed by a labyrinth type furnace wall expansion joint.

In the preferred scheme of the invention, the side walls corresponding to the drying grate and the burn-out grate, the front side wall and the rear side wall are water-cooled furnace walls.

According to the preferable scheme of the invention, the joint of the combustion grate and the water-cooling furnace wall is connected by adopting an expansion joint.

According to the preferable scheme of the invention, the water-cooled walls of the side wall of the drying section, the side wall of the combustion section and the side wall of the burnout section adopt a build-up welding anticorrosion structure, and the front side wall and the rear side wall adopt a water-cooled wall and castable anticorrosion structure.

The invention has the beneficial effects that: the invention provides a water-cooled furnace wall of a garbage incinerator, which comprises a side wall system and a hearth top wall system, wherein the side wall system is composed of a drying section side wall, a combustion section side wall, a burnout section side wall, a front side wall and a rear side wall, which respectively correspond to a drying grate, a combustion grate and a burnout grate, and the hearth top wall system is composed of a front arch water-cooled wall and a rear arch water-cooled wall. Because the side wall of the combustion section adopts the water-cooled furnace wall, the temperature of the flue gas in the hearth is reduced, the overall temperature in the hearth is reduced, and the service life of the furnace wall is prolonged; the smoke in the hearth is distributed more uniformly, so that the heat exchange and the safe operation of a downstream heating surface are facilitated; the water-cooled furnace wall has a simpler structure and lower cost than the air-cooled furnace wall. The construction cost of the waste incineration power plant can be reduced and the safe operation of the waste incinerator can be effectively ensured.

Description of the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the prior art.

Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

In the figure:

1. a hearth;

2. a front arch water-cooled wall;

3. a rear arch water-cooled wall;

4. drying the grate;

5. a combustion grate;

6. burning out the grate;

7. drying the section side wall;

8. a combustion section side wall;

9. a burnout section side wall;

10. labyrinth type furnace wall expansion joint.

Detailed Description

Fig. 1 is a schematic structural diagram of an embodiment of the prior art. In the prior art, the furnace wall of the garbage incinerator comprises a side wall system consisting of a drying section side wall 7, a combustion section side wall 8, a burning section side wall 9 and a front side wall and a rear side wall which respectively correspond to a drying grate 4, a combustion grate 5 and a burning grate 6, and a hearth top wall system consisting of a front arch water-cooled wall 2 and a rear arch water-cooled wall 3. The side wall of the fire grate adopts a full heat insulation furnace wall or a full air cooling furnace wall.

However, when the side wall in the prior art completely adopts the heat insulation furnace wall, the flue gas temperature of the furnace chamber at the section is very high due to the combustion of the combustion furnace section, the service life of the furnace wall is threatened greatly, and the flue gas temperature distribution in the furnace chamber is very uneven, which is unfavorable for the heat exchange and the safe operation of the downstream heating surface. When the full air cooling furnace wall is adopted, the weight is large, an air cooling pipeline system is complex, the installation is inconvenient, and the manufacturing cost is high.

Fig. 2 is a schematic structural diagram of a first embodiment of the present invention. In the figure, the water-cooled furnace wall of the garbage incinerator comprises a side wall system consisting of a drying section side wall 7, a combustion section side wall 8, a combustion section side wall 9 and a front side wall and a rear side wall which respectively correspond to a drying grate 4, a combustion grate 5 and a burning grate 6, and a hearth top wall system consisting of a front arch water-cooled wall 2 and a rear arch water-cooled wall 3. Different from the prior art, the side wall 8 of the combustion section adopts a water-cooled furnace wall, and other side walls adopt heat-insulated furnace walls. In the embodiment, the combustion grate and the water-cooling furnace wall are connected by adopting an expansion joint at the joint; the junction of the heat insulation furnace wall and the water cooling furnace wall is sealed by a labyrinth type furnace wall expansion joint 10.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention. In the figure, it is shown that, unlike the first embodiment, all the side walls are water-cooled furnace walls at the same time.

The invention prompts that the water cooling walls of the drying section side wall 7, the combustion section side wall 8 and the burnout section side wall 9 adopt a build-up welding anticorrosion structure. The front side wall and the rear side wall are of an anti-corrosion structure formed by a water-cooled wall and a casting material.