Plane type combustor for decomposing furnace
By designing a planar burner with a diameter variable assembly and multiple coal nozzles, the problem of burner insertion depth adjustment and uniform mixing of coal powder in the decomposition furnace is solved, and a more complete combustion effect is achieved.
Patent Information
- Application Number
- CN202420776209.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The burner in the decomposition furnace cannot adjust the insertion depth of the coal feed pipe according to the working conditions, resulting in the inability to mix the coal powder evenly, resulting in insufficient combustion.
A planar burner including a mounting base, a coal feeding pipe, a diameter-reducing assembly and a coal nozzle are designed. Through a flexible material seal and a combination of multiple coal nozzles, the coal powder is circumferentially diffused in the upper and lower and side directions. , adjust the insertion depth of the coal feeding pipe to improve the coal powder mixing effect.
It achieves better mixing and full combustion of coal powder, improves combustion effect, and solves the problem of insufficient combustion.
Smart Images
Figure CN222210302U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of burners, in particular to a plane burner used in a decomposition furnace. Background Art
[0002] The decomposition furnace is a new type of thermal equipment that simultaneously carries out fuel combustion, heat exchange and decomposition reaction. By feeding preheated raw meal, a certain amount of fuel (mainly coal powder) and an appropriate amount of hot gas into the decomposition furnace at the same time, the raw meal is suspended or boiling in the furnace, and flamelessly burns with the fuel at below 900°C, and completes the heat transfer and calcium carbonate decomposition process at a high speed.
[0003] At present, the burner of the decomposition furnace generally uses two structures. One is a straight tube with a simple structure. Specifically, a heat-resistant steel pipe is used to transport coal directly into the furnace through wind. The other is to add a swirl device at the outlet of the coal pipe to make the coal-feeding air rotate, thereby increasing the diffusion area of the coal air.
[0004] When the burner structure is used, in order to ensure uniform dispersion of coal powder, several straight-tube coal nozzles are generally installed in the circumference of the decomposition furnace. However, no matter how they are installed, there is always more coal powder around the installation point and less coal powder at other locations, resulting in poor actual use effect. In addition, although the swirl coal nozzle has a better diffusion effect than the straight-tube coal nozzle, the installation method is the same and does not fundamentally solve the problem. The coal powder cannot be evenly mixed, resulting in incomplete combustion. Utility Model Content
[0005] The utility model aims to provide a flat burner for a decomposition furnace, which solves the problem that the burner cannot arbitrarily adjust the depth of the coal feeding pipe inserted into the decomposition furnace according to the working conditions, the coal powder cannot be evenly mixed, and the combustion is incomplete.
[0006] To achieve the above-mentioned purpose, the utility model provides a planar burner used in a decomposition furnace, comprising a mounting seat, a coal delivery pipe, a reducing assembly and a coal nozzle; the coal delivery pipe comprises a first coal delivery pipe, a second coal delivery pipe and a third coal delivery pipe, the first coal delivery pipe, the second coal delivery pipe and the third coal delivery pipe are respectively movably connected to the mounting seat, the connections between the first coal delivery pipe, the second coal delivery pipe and the third coal delivery pipe and the mounting seat are respectively sealed by flexible materials, and the first coal delivery pipe, the second coal delivery pipe and the third coal delivery pipe are respectively provided with the reducing assembly and the coal nozzle.
[0007] Among them, the reducing pipe includes a first reducing pipe, a second reducing pipe and a third reducing pipe, the first reducing pipe is fixedly connected to the first coal delivery pipe and is located between the first coal delivery pipe and the mounting seat, the second reducing pipe is fixedly connected to the second coal delivery pipe and is located between the first coal delivery pipe and the second coal delivery pipe, and the third reducing pipe is fixedly connected to the third coal delivery pipe and is located between the second coal delivery pipe and the third coal delivery pipe.
[0008] Among them, a plurality of coal nozzles are arranged at the front end of the third coal delivery pipe, a plurality of coal nozzles are arranged above and below the first coal delivery pipe and the second coal delivery pipe respectively, and the coal nozzles above and below the first coal delivery pipe and the second coal delivery pipe and the coal nozzles in front of the third coal delivery pipe cover a plane in three directions.
[0009] Among them, the coal nozzle includes a first group of coal nozzles, a second group of coal nozzles, a third group of coal nozzles, a fourth group of coal nozzles and a fifth group of coal nozzles. The fifth group of coal nozzles is fixedly connected to the third coal delivery pipe and is located at the tip of the third coal delivery pipe. The first group of coal nozzles, the second group of coal nozzles, the third group of coal nozzles and the fourth group of coal nozzles are respectively fixedly connected to the first coal delivery pipe and the second coal delivery pipe, and are respectively located on the outside of the first coal delivery pipe and the second coal delivery pipe.
[0010] Among them, the total hole area of the first group of coal nozzles, the second group of coal nozzles, the third group of coal nozzles, the fourth group of coal nozzles and the fifth group of coal nozzles is equal to the cross-sectional area of the first coal delivery pipe, the second coal delivery pipe and the third coal delivery pipe.
[0011] The utility model discloses a flat burner used in a decomposition furnace. A hole is opened above the decomposition furnace shell to be slightly larger than the outer diameter of the mounting seat. The mounting seat is welded to the decomposition furnace shell, and then the coal delivery pipe is inserted and some flexible materials are filled in the gap as a seal. By adjusting the depth of the coal delivery pipe inserted into the decomposition furnace, when in use, the coal delivery pipe is connected to a coal supply device, and coal powder is introduced into the coal injection assembly through the coal delivery pipe, and the coal powder flow is sprayed into the decomposition furnace through the coal injection assembly. A plurality of coal injection pipes spray coal powder in three directions of up, down and side to achieve circumferential diffusion. Compared with the prior art, the coal powder can be better mixed and fully burned, and the use effect is good. The problem that the burner cannot arbitrarily adjust the depth of the coal delivery pipe inserted into the decomposition furnace according to the working conditions, the coal powder cannot be evenly mixed, and the combustion is incomplete is solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.
[0013] Figure 1 A schematic diagram of the installation structure of a planar burner used in the decomposition furnace of the utility model;
[0014] Figure 2 It is a structural schematic diagram of a planar burner used in a decomposition furnace of the utility model;
[0015] Figure 3 The utility model is a schematic diagram of the side section structure of the flat burner used in the decomposition furnace.
[0016] In the figure: 1-coal delivery pipe, 2-mounting seat, 301-first reducer, 302-second reducer, 303-third reducer, 401-first group of coal nozzles, 402-second group of coal nozzles, 403-third group of coal nozzles, 404-fourth group of coal nozzles, 405-fifth group of coal nozzles, 501-first coal delivery pipe, 502-second coal delivery pipe, 503-third coal delivery pipe. DETAILED DESCRIPTION
[0017] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0018] The first embodiment of the present application is:
[0019] See also Figures 1 to 3 ,in, Figure 1 This is a schematic diagram of the installation structure of the flat burner used in the decomposition furnace of the utility model. Figure 2 This is a schematic diagram of the structure of the flat burner used in the decomposition furnace of the utility model. Figure 3 The utility model is a schematic diagram of the side section structure of a planar burner used in a decomposition furnace of the utility model. The utility model provides a planar burner used in a decomposition furnace, comprising a mounting seat 2, a coal delivery pipe 1, a reducing assembly and a coal nozzle, wherein the coal delivery pipe 1 comprises a first coal delivery pipe 501, a second coal delivery pipe 502 and a third coal delivery pipe 503, the reducing assembly comprises a first reducing pipe 301, a second reducing pipe 302 and a third reducing pipe 303, and the coal nozzle comprises a first group of coal nozzles 401, a second group of coal nozzles 402, a third group of coal nozzles 403, a fourth group of coal nozzles 404 and a fifth group of coal nozzles 405; the above-mentioned scheme solves the problem that the burner cannot arbitrarily adjust the depth of the coal delivery pipe inserted into the decomposition furnace according to the working conditions, the coal powder cannot be evenly mixed, and the combustion is incomplete.
[0020] According to this specific embodiment, the first coal delivery pipe 501, the second coal delivery pipe 502 and the third coal delivery pipe 503 are respectively movably connected to the mounting seat 2, and the connections between the first coal delivery pipe 501, the second coal delivery pipe 502 and the third coal delivery pipe 503 and the mounting seat 2 are respectively sealed by flexible materials, and the first coal delivery pipe 501, the second coal delivery pipe 502 and the third coal delivery pipe 503 are respectively provided with the reducing assembly and the coal nozzle, and a hole is opened above the decomposition furnace shell to be slightly larger than the outer diameter of the mounting seat 2, The mounting base 2 is welded to the decomposition furnace shell, and then the coal delivery pipe 1 is inserted and some flexible materials are filled in the gap as a seal. By adjusting the depth of the coal delivery pipe 1 inserted into the decomposition furnace, when in use, the coal delivery pipe 1 is connected to the coal supply device, and coal powder is introduced into the coal injection assembly through the coal delivery pipe 1, and the coal powder flow is sprayed into the decomposition furnace through the coal injection assembly. The multiple coal injection pipes spray coal powder in three directions of up, down and side to achieve circumferential diffusion. Compared with the prior art, the coal powder can be better mixed and fully burned, and the use effect is good.
[0021] Among them, the first reducer 301 is fixedly connected to the first coal delivery pipe 501 and is located between the first coal delivery pipe 501 and the mounting seat 2, the second reducer 302 is fixedly connected to the second coal delivery pipe 502 and is located between the first coal delivery pipe 501 and the second coal delivery pipe 502, the third reducer 303 is fixedly connected to the third coal delivery pipe 503 and is located between the second coal delivery pipe 502 and the third coal delivery pipe 503, the first reducer 301, the second reducer 302 and the third reducer 303 provide diameter reducing effects for the first coal delivery pipe 501, the second coal delivery pipe 502 and the third coal delivery pipe 503 respectively.
[0022] Secondly, a plurality of coal nozzles are arranged at the front end of the third coal delivery pipe 503, and a plurality of coal nozzles are arranged above and below the first coal delivery pipe 501 and the second coal delivery pipe 502 respectively. The coal nozzles above and below the first coal delivery pipe 501 and the second coal delivery pipe 502 and the coal nozzles in front of the third coal delivery pipe 503 cover a plane in three directions, and the coal nozzles are used to spray coal powder into the decomposition box.
[0023] Again, the fifth group of coal nozzles 405 is fixedly connected to the third coal delivery pipe 503 and is located at the tip of the third coal delivery pipe 503. The first group of coal nozzles 401, the second group of coal nozzles 402, the third group of coal nozzles 403 and the fourth group of coal nozzles 404 are respectively fixedly connected to the first coal delivery pipe 501 and the second coal delivery pipe 502 and are respectively located on the outside of the first coal delivery pipe 501 and the second coal delivery pipe 502. Coal powder is sprayed into the decomposition furnace from three directions: top, bottom and side through the first group of coal nozzles 401, the second group of coal nozzles 402, the third group of coal nozzles 403, the fourth group of coal nozzles 404 and the fifth group of coal nozzles 405.
[0024] A planar burner used in a decomposition furnace of the present embodiment is used, a hole is opened above the decomposition furnace shell to be slightly larger than the outer diameter of the mounting seat 2, the mounting seat 2 is welded to the decomposition furnace shell, and then the coal delivery pipe 1 is inserted and some flexible materials are filled in the gap as a seal, and the depth of the coal delivery pipe 1 inserted into the decomposition furnace is adjusted. When in use, the coal delivery pipe 1 is connected to a coal supply device, and coal powder is introduced into the coal injection assembly through the coal delivery pipe 1, and the coal powder flow is sprayed into the decomposition furnace through the coal injection assembly. The multiple coal injection pipes spray coal powder in three directions of up, down and side to achieve circumferential diffusion. Compared with the prior art, the coal powder can be better mixed and fully burned, and the use effect is good, which solves the problem that the burner cannot arbitrarily adjust the depth of the coal delivery pipe inserted into the decomposition furnace according to the working conditions, the coal powder cannot be evenly mixed, and the combustion is incomplete.
[0025] The second embodiment of the present application is:
[0026] Based on the first embodiment, the total hole area of the first group of coal nozzles 401, the second group of coal nozzles 402, the third group of coal nozzles 403, the fourth group of coal nozzles 404 and the fifth group of coal nozzles 405 is equal to the cross-sectional area of the first coal delivery pipe 501, the second coal delivery pipe 502 and the third coal delivery pipe 503.
[0027] Using the planar burner used in the decomposition furnace of this embodiment, the total hole area of the first group of coal nozzles 401, the second group of coal nozzles 402, the third group of coal nozzles 403, the fourth group of coal nozzles 404 and the fifth group of coal nozzles 405 is equal to the cross-sectional area of the first coal delivery pipe 501, the second coal delivery pipe 502 and the third coal delivery pipe 503 to ensure stable coal delivery wind speed.
[0028] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.
Claims
1. A planar burner for a calciner, comprising a mounting seat, characterized in that: It also includes a coal delivery pipe, a reducing assembly and a coal nozzle; The coal delivery pipe includes a first coal delivery pipe, a second coal delivery pipe and a third coal delivery pipe, and the first coal delivery pipe, the second coal delivery pipe and the third coal delivery pipe are respectively movably connected to the mounting seat, and the connections between the first coal delivery pipe, the second coal delivery pipe and the third coal delivery pipe and the mounting seat are respectively sealed by flexible materials, and the first coal delivery pipe, the second coal delivery pipe and the third coal delivery pipe are respectively provided with the reducing assembly and the coal nozzle.
2. A planar burner for a calciner as claimed in claim 1, characterized in that: The reducing pipe assembly includes a first reducing pipe, a second reducing pipe and a third reducing pipe. The first reducing pipe is fixedly connected to the first coal delivery pipe and is located between the first coal delivery pipe and the mounting seat. The second reducing pipe is fixedly connected to the second coal delivery pipe and is located between the first coal delivery pipe and the second coal delivery pipe. The third reducing pipe is fixedly connected to the third coal delivery pipe and is located between the second coal delivery pipe and the third coal delivery pipe.
3. The flat burner used in a calciner according to claim 1, characterized in that: A plurality of coal nozzles are arranged at the front end of the third coal delivery pipe, and a plurality of coal nozzles are arranged above and below the first coal delivery pipe and the second coal delivery pipe respectively. The coal nozzles above and below the first coal delivery pipe and the second coal delivery pipe and the coal nozzles in front of the third coal delivery pipe cover a plane in three directions.
4. A planar burner for a calciner as claimed in claim 3, characterized in that: The coal nozzle includes a first group of coal nozzles, a second group of coal nozzles, a third group of coal nozzles, a fourth group of coal nozzles and a fifth group of coal nozzles. The fifth group of coal nozzles is fixedly connected to the third coal delivery pipe and is located at the tip of the third coal delivery pipe. The first group of coal nozzles, the second group of coal nozzles, the third group of coal nozzles and the fourth group of coal nozzles are respectively fixedly connected to the first coal delivery pipe and the second coal delivery pipe, and are respectively located on the outside of the first coal delivery pipe and the second coal delivery pipe.
5. A planar burner for a calciner as claimed in claim 4, characterized in that: The total hole area of the first group of coal nozzles, the second group of coal nozzles, the third group of coal nozzles, the fourth group of coal nozzles and the fifth group of coal nozzles is equal to the cross-sectional area of the first coal delivery pipe, the second coal delivery pipe and the third coal delivery pipe.