Waste incineration waste heat boiler

Abstract

The utility model discloses a waste incineration waste heat boiler which comprises a boiler body, pulse tanks are arranged at the two ends of the boiler body, the pulse tanks are connected with the boiler body through pulse pipelines, a plurality of pulse branch pipes are arranged on the pulse pipelines, the number of the pulse branch pipes is a plurality, and the pulse branch pipes are connected with the boiler body. The pulse pipeline and the plurality of pulse branch pipes are connected with the pipeline system; the pipeline system comprises a fan, the output end of the fan is connected with a main pipeline, a plurality of branch pipelines are arranged on the main pipeline, and the plurality of branch pipelines are communicated with the pulse pipeline and the plurality of pulse branch pipes; the end part of the boiler main body is communicated with an outlet flue, a low-temperature superheater, a secondary evaporator and a coal economizer are sequentially arranged in the outlet flue, and a plurality of shock wave soot blowing points are arranged on the low-temperature superheater, the secondary evaporator and the coal economizer. According to the shock wave soot blower, the interior of the shock wave soot blower can be prevented from being blocked, normal operation of the shock wave soot blower is ensured, and fly ash, moisture and acid gas in flue gas can be treated in time and prevented from entering the shock wave soot blower.

Description

Technical Field

[0001] The utility model belongs to the technical field of garbage incineration treatment, and particularly relates to a garbage incineration waste heat boiler. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Municipal solid waste incineration technology has been widely used in various cities. Waste incineration produces high-temperature flue gas, which is then absorbed by waste heat boilers to produce high-temperature, high-pressure steam for power generation. Conventional shock wave soot blowers, equipped with air curtain fans, address the accumulation of water and ash caused by the high moisture content and complex composition of the waste. However, due to changes in combustion conditions and the influence of flue gas acid dew during operation, the flue gas carries a large amount of fly ash, water, and acidic gases. Once it enters the pulse tank and some of its connecting pipes, it will form acid dew inside. The fly ash will adhere to the acid dew, forming wet ash and eventually ash scale. This can cause corrosion and ash blockage in the shock wave soot blower, affecting its safe and stable operation.

[0004] Existing waste heat boilers are equipped with shock wave soot blowers for soot blowing. However, due to the influence of fly ash, moisture and acidic gas, the shock wave soot blower will inevitably be blocked, affecting the normal operation of the waste heat boiler. Therefore, it is necessary to avoid the blockage of the shock wave soot blower and deal with the fly ash, moisture and acidic gas in the flue gas in time to prevent them from entering the shock wave soot blower. Utility Model Content

[0005] In response to the above problems, the utility model provides a waste incineration waste heat boiler, which can avoid internal blockage of the shock wave soot blower, ensure the normal operation of the shock wave soot blower, and can also promptly process fly ash, moisture and acidic gas in the flue gas to prevent them from entering the shock wave soot blower.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A waste incineration waste heat boiler comprises a boiler body, wherein pulse tanks are provided at both ends of the boiler body, the pulse tanks are connected to the boiler body via a pulse pipe, a plurality of pulse branches are provided on the pulse pipe, and a plurality of pulse branches are provided, and the pulse pipe and the plurality of pulse branches are connected to a pipeline system;

[0008] The pipeline system includes a fan, the output end of the fan is connected to the main pipeline, a number of branch pipelines are arranged on the main pipeline, and the several branch pipelines are connected to the pulse pipeline and a number of pulse branch pipes; the end of the boiler body is connected to the outlet flue, and a low-temperature superheater, a secondary evaporator and an economizer are arranged in sequence in the outlet flue, and a number of shock wave soot blowing points are arranged on the low-temperature superheater, the secondary evaporator and the economizer, and shock wave soot blowers are arranged at the position of the shock wave soot blowing points, and the shock wave soot blowers are connected to the pulse branch pipes.

[0009] Furthermore, a gas distribution ignition pipeline is provided at the upper end of the pulse tank, one end of the gas distribution ignition pipeline is connected to the gas distribution ignition device, and the other end is connected to the pulse tank.

[0010] Furthermore, the lower end of the pulse tank is communicated with the pulse pipe, the end of the pulse pipe passes through the furnace wall of the boiler body and extends to the interior of the boiler body, and the end of the pulse pipe is an oblique pipe mouth.

[0011] Furthermore, the pipeline system also includes a first branch pipeline and a second branch pipeline, the first branch pipeline is connected to the pulse pipeline, and the first branch pipeline is obliquely plugged into the pulse pipeline.

[0012] Furthermore, a plurality of second branch pipelines are provided, and the plurality of second branch pipelines are connected to a plurality of pulse branch pipelines.

[0013] Furthermore, the economizer includes a first-stage economizer, a second-stage economizer and a third-stage economizer, and a second-stage evaporator is provided at one end of the low-temperature superheater.

[0014] Furthermore, a three-stage economizer is provided at one end of the two-stage evaporator, and a two-stage economizer is provided at one end of the three-stage economizer.

[0015] Furthermore, a primary economizer is provided at one end of the secondary economizer, and the primary economizer is located near the outlet of the outlet flue.

[0016] Furthermore, shock wave soot blowing points are provided on the low-temperature superheater, the secondary evaporator, the primary economizer, the secondary economizer and the tertiary economizer.

[0017] Furthermore, the shock wave soot blowing points are arranged at intervals from top to bottom.

[0018] Compared with the prior art, the advantages and positive effects of this utility model are:

[0019] The utility model is provided with a pipeline system, and through the cooperation of the fan, main pipeline and branch pipeline of the pipeline system, air is blown into the pulse pipeline and the pulse branch pipe, and the flue gas containing fly ash, moisture and acid gas entering the pulse pipeline and the pulse branch pipe is blown out in time, thereby preventing the flue gas from entering the pulse tank through the shock wave soot blower and the corresponding pipeline, thereby avoiding internal blockage of the shock wave soot blower and ensuring the normal operation of the shock wave soot blower. Shock wave soot blowing points are set on the low-temperature superheater, the secondary evaporator, the first-stage economizer, the second-stage economizer and the third-stage economizer. The shock wave soot blowing points are set at intervals from top to bottom, which can blow the flue gas out of the flue as soon as possible to avoid ash accumulation, and can promptly deal with the fly ash, moisture and acid gas in the flue gas, thereby preventing the flue gas from entering the pulse tank from the root. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the waste incineration waste heat boiler of the utility model;

[0022] Figure 2 This is a piping system diagram of the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the outlet flue of the utility model;

[0024] In the figure: 1. Boiler body; 11. Furnace wall; 2. Pulse tank; 21. Pulse pipe; 22. Shock wave soot blowing point; 3. Piping system; 31. Fan; 32. Main pipe; 33. First branch pipe; 34. Second branch pipe; 4. Outlet flue; 5. Gas distribution and ignition device; 51. Gas distribution and ignition pipe; 6. Low-temperature superheater; 7. Second-stage evaporator; 8. Third-stage economizer; 9. Second-stage economizer; 10. First-stage economizer. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] The utility model is described in detail below with reference to the accompanying drawings. The embodiment discloses a waste incineration waste heat boiler. Figure 1As shown, it includes a boiler body 1, with pulse tanks 2 provided at both ends of the boiler body 1. The pulse tank 2 is connected to the boiler body 1 through a pulse pipe 21. A plurality of pulse branches are provided on the pulse pipe 21. The pulse branches are provided in a plurality of numbers. The pulse pipe 21 and the plurality of pulse branches are connected to a pipeline system 3.

[0027] The piping system 3 includes a fan 31, the output end of the fan 31 is connected to the main pipeline 32, and a number of branch pipelines are arranged on the main pipeline 32, and the several branch pipelines are connected to the pulse pipeline 21 and a number of pulse branches; the end of the boiler body 1 is connected to the outlet flue 4, and a low-temperature superheater 6, a secondary evaporator 7 and an economizer are arranged in sequence in the outlet flue 4. A number of shock wave soot blowing points 22 are arranged on the low-temperature superheater 6, the secondary evaporator 7 and the economizer, and a shock wave soot blower is arranged at the position of the shock wave soot blowing point 22, and the shock wave soot blower is connected to the pulse branch.

[0028] Through the cooperation of the fan 31, the main line 32 and the branch line of the pipeline system 3, air is blown into the pulse pipeline 21 and the pulse branch pipe, and the flue gas containing fly ash, moisture and acidic gas entering the pulse pipeline 21 and the pulse branch pipe is blown out in time, thereby preventing the flue gas from entering the pulse tank 2 through the shock wave soot blower and the corresponding pipeline, thereby avoiding internal blockage of the shock wave soot blower and ensuring the normal operation of the shock wave soot blower.

[0029] A gas distribution and ignition pipeline 51 is provided at the upper end of the pulse tank 2. One end of the gas distribution and ignition pipeline 51 is connected to the gas distribution and ignition device 5, and the other end is connected to the pulse tank 2. The lower end of the pulse tank 2 is connected to the pulse pipe 21. The end of the pulse pipe 21 extends through the furnace wall 11 of the boiler body 1 into the interior of the boiler body 1. The end of the pulse pipe 21 is an oblique pipe mouth.

[0030] After the acetylene and compressed air are deflagrated, they pass through the pulse tank 2, and then through the pulse pipe 21 and the pulse branch pipe. Due to the presence of multiple evenly distributed shock wave soot blowing points 22, the pulse waves generated by the deflagration can be released from the shock wave soot blower to the furnace and the outlet flue 4 in all directions in the shortest time, thereby avoiding dust accumulation.

[0031] like Figure 2 As shown, the piping system 3 also includes a first branch pipe 33 and a second branch pipe 34. The first branch pipe 33 is connected to the pulse pipe 21 and is plugged into the pulse pipe 21 at an angle. Multiple second branch pipes 34 are provided, and each of these second branch pipes 34 is connected to a plurality of pulse branch pipes. The provision of multiple first branch pipes 33 and second branch pipes 34 connected to the pulse pipe 21 and the pulse branch pipes allows for the timely removal of flue gas entering the pulse pipe 21 and the pulse branch pipes, preventing the formation of wet ash and eventually, ash scale.

[0032] like Figure 3As shown, the economizer includes a primary economizer 10, a secondary economizer 9, and a tertiary economizer 8. A secondary evaporator 7 is provided at one end of the low-temperature superheater 6. A tertiary economizer 8 is provided at one end of the secondary evaporator 7, and a secondary economizer 9 is provided at one end of the tertiary economizer 8. A primary economizer 10 is provided at one end of the secondary economizer 9, located near the outlet of the outlet flue 4. Shock wave soot blowing points 22 are provided on the low-temperature superheater 6, the secondary evaporator 7, the primary economizer 10, the secondary economizer 9, and the tertiary economizer 8. Several shock wave soot blowing points 22 are spaced apart from each other from top to bottom.

[0033] Shock wave soot blowing points 22 are provided on the low-temperature superheater 6, the secondary evaporator 7, the primary economizer 10, the secondary economizer 9 and the tertiary economizer 8. The shock wave soot blowing points 22 are arranged at intervals from top to bottom, and there are three layers from top to bottom, with a total of thirty shock wave soot blowing points 22. The flue gas can be blown out of the flue as quickly as possible to avoid ash accumulation, and the fly ash, moisture and acid gas in the flue gas can be processed in time, thereby preventing the flue gas from entering the pulse tank 2 from the root.

[0034] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A waste incineration waste heat boiler, characterized in that: The boiler comprises a main body, pulse tanks are provided at both ends of the main body, the pulse tanks are connected to the main body through a pulse pipe, a plurality of pulse branches are provided on the pulse pipe, a plurality of pulse branches are provided, and the pulse pipe and the plurality of pulse branches are connected to a pipeline system; The pipeline system includes a fan, the output end of the fan is connected to the main pipeline, a number of branch pipelines are arranged on the main pipeline, and the several branch pipelines are connected to the pulse pipeline and a number of pulse branch pipes; the end of the boiler body is connected to the outlet flue, and a low-temperature superheater, a secondary evaporator and an economizer are arranged in sequence in the outlet flue, and a number of shock wave soot blowing points are arranged on the low-temperature superheater, the secondary evaporator and the economizer, and shock wave soot blowers are arranged at the position of the shock wave soot blowing points, and the shock wave soot blowers are connected to the pulse branch pipes.

2. A waste incineration waste heat boiler according to claim 1, characterized in that: A gas distribution ignition pipeline is provided at the upper end of the pulse tank. One end of the gas distribution ignition pipeline is communicated with the gas distribution ignition device, and the other end is communicated with the pulse tank.

3. The waste incineration waste heat boiler according to claim 1, characterized in that: The lower end of the pulse tank is communicated with the pulse pipe, the end of the pulse pipe passes through the furnace wall of the boiler body and extends to the interior of the boiler body, and the end of the pulse pipe is an oblique pipe mouth.

4. The waste incineration waste heat boiler according to claim 1, characterized in that: The pipeline system further includes a first branch pipeline and a second branch pipeline, wherein the first branch pipeline is communicated with the pulse pipeline, and the first branch pipeline is obliquely plugged into the pulse pipeline.

5. The waste incineration waste heat boiler according to claim 4, characterized in that: A plurality of second branch pipelines are provided, and the plurality of second branch pipelines are connected with a plurality of pulse branch pipelines.

6. The waste incineration waste heat boiler according to claim 1, characterized in that: The economizer includes a primary economizer, a secondary economizer and a tertiary economizer, and a secondary evaporator is provided at one end of the low-temperature superheater.

7. The waste incineration waste heat boiler according to claim 6, characterized in that: A three-stage economizer is provided at one end of the two-stage evaporator, and a two-stage economizer is provided at one end of the three-stage economizer.

8. The waste incineration waste heat boiler according to claim 7, characterized in that: A primary economizer is provided at one end of the secondary economizer, and the primary economizer is located near the outlet of the outlet flue.

9. The waste incineration waste heat boiler according to claim 8, characterized in that: Shock wave soot blowing points are provided on the low-temperature superheater, the secondary evaporator, the primary economizer, the secondary economizer and the tertiary economizer.

10. The waste incineration waste heat boiler according to claim 9, characterized in that: The shock wave soot blowing points are arranged in a plurality of intervals from top to bottom.

Images