CN218936409U

CN218936409U - Membrane type water-cooled wall boiler

Info

Publication number: CN218936409U
Application number: CN202221542455.2U
Authority: CN
Inventors: 包旦明; 高新红; 周春城
Original assignee: Hangzhou Xingyun Environmental Technology Co ltd
Current assignee: Hangzhou Xingyun Environmental Technology Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2023-04-28
Anticipated expiration: 2032-06-20

Abstract

The utility model relates to a membrane water-cooled wall boiler, which comprises a boiler body, wherein a settling chamber and a lifting chamber are arranged in the boiler body, an inlet flue is arranged at the upper end of the settling chamber, a flue gas outlet is arranged at the upper end of the lifting chamber, and ash hoppers are respectively arranged at the lower ends of the settling chamber and the lifting chamber; the membrane water-cooled walls are arranged on the side walls of the inlet flue, the sedimentation chamber and the lifting chamber; the inner side of the membrane water wall is provided with a heat insulation material, and the inner side of the heat insulation material is provided with a casting material. The membrane water wall is formed by splicing and welding a plurality of water wall pipes and fins. A grabbing nail is arranged between the membrane water-cooled wall and the casting material. The grabbing nail is of an L-shaped structure, the end part of the grabbing nail is provided with a bending part, the grabbing nail penetrates through the castable and the heat insulation material to be connected with the fins, and the bending part is positioned in the castable. The bending parts of two adjacent grabbing nails face opposite directions, and the interval between the two adjacent grabbing nails is 200mm. The utility model effectively solves the problems of high-temperature corrosion and coking of the inner wall of the boiler, and greatly prolongs the service life of the boiler.

Description

Membrane type water-cooled wall boiler

Technical Field

The utility model relates to the field of boiler equipment, in particular to a membrane water-cooled wall boiler.

Background

With the development of modern society, hazardous waste generated by people's life and industry is more and more, such as municipal waste, medical waste, hazardous solid waste, etc., and the disposal of these solid waste has been landfill-treated for a long time in the past, and the damage to the environment is very great. At present, a complete set of technological processes of incineration, waste heat utilization and tail flue gas treatment are adopted for the solid wastes, so that potential energy recycling in the solid wastes is realized, and the method plays an important role in environmental protection.

In the operation process of the coal-fired boiler, the prevention of high-temperature corrosion of the water-cooled wall is a precondition of safe, economical and stable operation. In a burning boiler, the temperature of high-temperature waste heat flue gas can reach 750-1100 ℃, and a large amount of coal powder particles are hedging into a hearth for burning, so that the high-temperature waste heat flue gas is easy to adhere to the vicinity of two side walls of the hearth for burning, and the inner wall of the boiler is corroded and coked in a large area.

To solve the above problems, workers in the art have made various studies on membrane water wall boilers:

chinese patent publication No. CN215001507U discloses a hazardous waste exhaust-heat boiler of a full membrane water wall, belonging to the field of hazardous waste incineration exhaust-heat boilers. The utility model comprises an inlet flue water-cooling wall, a settling chamber, a rising chamber and an ash bucket, wherein the inlet flue water-cooling wall is connected with the settling chamber, the settling chamber is connected with the rising chamber, the ash bucket is arranged at the lower ends of the settling chamber and the rising chamber, a flue gas inlet is arranged on the inlet flue water-cooling wall, and a flue gas outlet is arranged on the rising chamber. The whole structure is simple and compact in design, safe and reliable, convenient to install, use and maintain, low in steel consumption and good in economical efficiency, and is energy-saving and environment-friendly; the inlet flue adopts a membrane water-cooled wall form, so that the weight of casting materials is reduced, and the cost is reduced; the flue gas can be self-dedusted by 180 DEG steering in structural design; the reliability of boiler water circulation is improved, and the problems of ultra-temperature and pipe explosion are prevented. However, in the technical scheme, the membrane water wall cannot be insulated or is insufficient in insulation, and coking or high-temperature corrosion of the membrane water wall is easy to occur.

There is therefore a need for further improvements to membrane water wall boilers to address the above-described deficiencies.

Disclosure of Invention

The purpose of the present application is: the membrane water-cooled wall boiler solves and overcomes the defects of the prior art and application, effectively solves the problems of high-temperature corrosion and coking of the inner wall of the boiler, and greatly prolongs the service life of the boiler.

The membrane water-cooled wall boiler comprises a boiler body, wherein a settling chamber and a rising chamber are arranged in the boiler body, an inlet flue is arranged at the upper end of the settling chamber, a flue gas outlet is arranged at the upper end of the rising chamber, and ash hoppers are respectively arranged at the lower ends of the settling chamber and the rising chamber; a membrane water-cooled wall is arranged on the side walls of the inlet flue, the sedimentation chamber and the lifting chamber; the inner side of the membrane water wall is provided with a heat insulation material, and the inner side of the heat insulation material is provided with a castable.

Preferably, the membrane water wall is formed by splicing and welding a plurality of water wall pipes and fins.

Preferably, a grabbing nail is arranged between the membrane water wall and the castable.

Preferably, the grabbing nail is of an L-shaped structure, the end part of the grabbing nail is provided with a bending part, the grabbing nail penetrates through the casting material and the heat insulation material to be connected with the fins, and the bending part is positioned in the casting material.

Preferably, the two adjacent grabbing nail bending parts face opposite, and the interval between the two adjacent grabbing nails is 200mm.

Preferably, the thickness of the heat insulation material is 30mm, and the thickness of the casting material is 50mm.

Compared with the prior art, the application has at least the following obvious advantages and effects:

1. in the utility model, a settling chamber and a lifting chamber are arranged in a boiler body, an inlet flue is arranged at the upper end of the settling chamber, a flue gas outlet is arranged at the upper end of the lifting chamber, and ash hoppers are respectively arranged at the lower ends of the settling chamber and the lifting chamber; the flue gas enters the settling chamber from the inlet flue, the flue gas vertically downwards enters the lifting chamber after reaching the bottom and a 180-degree corner, and finally the flue gas is horizontally discharged out of the boiler along the flue gas outlet, and most of ash is settled at the ash hopper. The soot is reduced to be attached to the inner wall of the boiler, so that the inner wall of the boiler is effectively prevented from coking or high-temperature corrosion, and the service life of the boiler is prolonged.

2. According to the utility model, the heat insulation material is arranged on the inner side of the membrane water wall, and the castable is arranged on the inner side of the heat insulation material, so that the membrane water wall is isolated from being in direct contact with flue gas, a good cooling effect is achieved, and the abrasion and corrosion of the water wall are effectively prevented.

3. In the utility model, the grabbing nails are arranged between the membrane water wall and the casting material, the grabbing nails are of L-shaped structures, the end parts of the grabbing nails are provided with bending parts, the grabbing nails penetrate through the casting material and the heat insulation material to be connected with the fins, and the bending parts are positioned in the casting material. The heat insulation material and the castable are fixed on the membrane water wall through the grabbing nails, so that the firmness of the heat insulation material and the castable is enhanced.

Drawings

FIG. 1 is a layout of the overall structure of a membrane water wall boiler of the present application.

FIG. 2 is a schematic view of a membrane wall structure in the present application.

Fig. 3 is a schematic view of the structure of the tack in this application.

Reference numerals in the present application:

the boiler comprises a boiler body 100, a settling chamber 1, an ascending chamber 2, an inlet flue 3, a flue gas outlet 4, an ash bucket 5, a membrane water wall 6, a water wall pipe 61, fins 62, a heat insulation material 7, castable 8, a grabbing nail 9 and a bending part 91.

Detailed Description

Specific embodiments of the present application are described in order to teach those skilled in the art how to make and use the best mode of the application in conjunction with the accompanying drawings and the following description. The following conventional aspects have been simplified or omitted in order to teach the principles of the application. Those skilled in the art will appreciate variations from these embodiments that fall within the scope of the present application. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the application. The terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present application are also merely for descriptive purposes and are not intended to limit the scope of the utility model as it may be embodied or modified in relative terms without materially altering the technology of the utility model. Thus, the present application is not limited to the specific embodiments described below, but only by the claims and their equivalents.

Fig. 1 to 3 show a specific embodiment of a membrane water-cooled wall boiler of the present application, which comprises a boiler body 100, wherein a settling chamber 1 and a rising chamber 2 are arranged in the boiler body 100, an inlet flue 3 is arranged at the upper end of the settling chamber 1, a flue gas outlet 4 is arranged at the upper end of the rising chamber 2, and ash hoppers 5 are respectively arranged at the lower ends of the settling chamber 1 and the rising chamber 2; the side walls of the inlet flue 3, the sedimentation chamber 1 and the lifting chamber 2 are provided with membrane water walls 6; the inner side of the membrane water wall 6 is provided with a heat insulation material 7, and the inner side of the heat insulation material 7 is provided with a casting material 8. The membrane water wall 6 is formed by splicing and welding a plurality of water wall pipes 61 and fins 62. A grabbing nail 9 is arranged between the membrane water wall and the castable 8. The grabbing nail 9 is of an L-shaped structure, the end part of the grabbing nail is provided with a bending part 91, the grabbing nail 9 penetrates through the castable 8 and the heat insulation material 7 to be connected with the fins 62, and the bending part 91 is located in the castable 8. The bending parts 91 of two adjacent grabbing nails 9 face opposite, and the interval between the two adjacent grabbing nails 9 is 200mm. The thickness of the heat insulation material 7 is 30mm, and the thickness of the casting material 8 is 50mm. The utility model effectively solves the problems of high-temperature corrosion and coking of the inner wall of the boiler, and greatly prolongs the service life of the boiler.

As shown in fig. 1, in the embodiment of the application, a membrane water-cooled wall boiler comprises a boiler body 100, a settling chamber 1 and a rising chamber 2 are arranged in the boiler body 100, an inlet flue 3 is arranged at the upper end of the settling chamber 1, a temperature and pressure measuring point is arranged at the inlet flue 3 and used for monitoring a flue opening thermometer value and a pressure value, a flue gas outlet 4 is arranged at the upper end of the rising chamber 2, and ash hoppers 5 are respectively arranged at the lower ends of the settling chamber 1 and the rising chamber 2. The flue gas enters the settling chamber 1 from the inlet flue 3, the flue gas vertically goes down to the bottom and then enters the ascending chamber 2 after 180-degree rotation angle, and finally the flue gas is horizontally discharged out of the boiler along the flue gas outlet 4, and most of ash is settled at the ash bucket 5. The soot is reduced to be attached to the inner wall of the boiler, so that the inner wall of the boiler is effectively prevented from coking or high-temperature corrosion, and the service life of the boiler is prolonged.

Specifically, as shown in fig. 1 and fig. 2, in the embodiment of the present application, membrane water walls 6 are disposed on the side walls of the inlet flue 3, the settling chamber 1, and the rising chamber 2, and since the temperature of the inlet flue 3 is the highest, the inlet flue 3 can be independently set as the membrane water walls 6 according to the requirement, and other positions are not set; the membrane water-cooled wall 6 is formed by splicing and welding a plurality of water-cooled wall pipes 61 and fins 62, and the integral tube panel is formed by splicing and welding the water-cooled wall pipes 61 and the fins 62, has the advantages that the air tightness is good, the outer side of the tube panel is only required to be coated with thinner heat insulation materials 7, high-temperature flue gas of a hearth is not in direct contact with the inner wall of a boiler, coking prevention is facilitated, the tube panel can be prefabricated into a sheet in a manufacturing plant, and the construction site installation is facilitated.

It should be noted that, as shown in fig. 2, in the embodiment of the present application, the inner side of the membrane water wall 6 is provided with a heat insulation material 7, the thickness of the heat insulation material 7 is 30mm, and the heat insulation material 7 has the characteristics of heat insulation and high temperature resistance; the inner side of the heat insulation material 7 is provided with a castable 8, the castable 8 is fireproof and wear-resistant plastic, and the thickness of the castable 8 is 50mm. The inner side of the membrane water wall is provided with the heat insulation material 7, the inner side of the heat insulation material 7 is provided with the castable 8, the isolated membrane water wall 6 is in direct contact with flue gas, the cooling effect is good, and the abrasion and corrosion of the water wall are effectively prevented.

As shown in fig. 2 and 3, in the embodiment of the present application, a gripping pin 9 is disposed between the membrane water wall and the castable 8; the grabbing nail 9 is of an L-shaped structure, the end part of the grabbing nail 9 is provided with a bending part 91, the grabbing nail 9 penetrates through the castable 8 and the heat insulation material 7 to be connected with the fins 62, the bending part 91 is positioned in the castable 8, the grabbing nail 9 and the fins 62 are welded, and an welding rod A307 is adopted; the bent portions 91 of two adjacent grasping nails 9 face opposite directions, the interval between the two adjacent grasping nails 9 is 200mm, and the diameter of the grasping nail 9 is 6mm. The heat insulation material 7 and the castable 8 are fixed on the membrane water wall through the grabbing nails 9, so that the firmness of the heat insulation material 7 and the castable 8 is enhanced.

The utility model relates to a boiler, which is characterized in that a settling chamber 1 and a rising chamber 2 are arranged in a boiler body 100, an inlet flue 3 is arranged at the upper end of the settling chamber 1, a flue gas outlet 4 is arranged at the upper end of the rising chamber 2, and ash hoppers 5 are respectively arranged at the lower ends of the settling chamber 1 and the rising chamber 2; the flue gas enters the settling chamber 1 from the inlet flue 3, the flue gas vertically downwards enters the rising chamber 2 after reaching 180 DEG of rotation angle at the bottom, and finally the flue gas is horizontally discharged out of the boiler along the flue gas outlet 4, so that most of ash is settled at the ash bucket 5, the adhesion of the ash on the inner wall of the boiler is reduced, the coking or high-temperature corrosion of the inner wall of the boiler is further effectively prevented, and the service life of the boiler is prolonged; the inner side of the membrane water wall is provided with the heat insulation material 7, and the inner side of the heat insulation material 7 is provided with the castable 8, so that the membrane water wall 6 is isolated from being in direct contact with flue gas, the cooling effect is good, and the abrasion and corrosion of the water wall are effectively prevented; the heat insulation material 7 and the castable 8 are fixed on the membrane water wall through the grabbing nails 9, so that the firmness of the heat insulation material 7 and the castable 8 is enhanced.

Since it will be readily apparent to those skilled in the art that any modifications, equivalent substitutions, improvements, etc. that are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. The membrane water-cooled wall boiler comprises a boiler body, and is characterized in that a settling chamber and a rising chamber are arranged in the boiler body, an inlet flue is arranged at the upper end of the settling chamber, a flue gas outlet is arranged at the upper end of the rising chamber, and ash hoppers are respectively arranged at the lower ends of the settling chamber and the rising chamber; a membrane water-cooled wall is arranged on the side walls of the inlet flue, the sedimentation chamber and the lifting chamber; the inner side of the membrane water wall is provided with a heat insulation material, and the inner side of the heat insulation material is provided with a castable.

2. A membrane water wall boiler as claimed in claim 1 wherein: the membrane water wall is formed by splicing and welding a plurality of water wall pipes and fins.

3. A membrane water wall boiler as claimed in claim 1 wherein: and a grabbing nail is arranged between the membrane water wall and the castable.

4. A membrane wall boiler according to claim 3, wherein: the bending parts of two adjacent grabbing nails face opposite directions, and the interval between two adjacent grabbing nails is 200mm.

5. A membrane water wall boiler as claimed in claim 1 wherein: the thickness of the heat insulation material is 30mm, and the thickness of the castable is 50mm.