Environment-friendly and energy-saving device for feed opening of fluidized bed furnace

By installing environmentally friendly and energy-saving devices at the boiling furnace discharge port, and using air fans and cyclone separators to recover flue gas and dust, the problems of unorganized emissions, equipment corrosion and high maintenance costs are solved, and the working environment and equipment life are improved.

CN222481148UActive Publication Date: 2025-02-14PANZHIHUA RONGCHANG CHEM CO LTD
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Patent Information

Application Number
CN202420471925.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-12
Publication Date
2025-02-14
Estimated Expiration
2034-03-12

AI Technical Summary

Technical Problem

During the use of the existing boiling furnace, the discharge port has irregular positive pressure, resulting in unorganized flue gas emissions, poor working conditions of employees, loss of raw materials increases production costs, serious equipment corrosion and high maintenance costs.

Method used

Design an environmentally friendly and energy-saving device for the boiling furnace outlet, including an air fan, a double-layer outlet, an air inlet assembly, a cyclone separator and a dust removal assembly. Through negative pressure and cyclone separation technology, flue gas and dust are recovered into the system. Avoid unorganized emissions.

Benefits of technology

It effectively improves the working environment of employees, reduces unorganized flue gas emissions, reduces equipment corrosion and maintenance costs, and improves production efficiency and equipment life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222481148U_ABST
Patent Text Reader

Abstract

The utility model belongs to the field of fluidized bed furnaces, particularly relates to an environment-friendly and energy-saving device for a feed opening of a fluidized bed furnace, and provides the following scheme aiming at the problems that the existing working conditions of employees are bad, raw materials are lost, the production cost is increased, equipment is seriously corroded and the equipment maintenance cost is increased, and the environment-friendly and energy-saving device comprises a fluidized bed furnace body, a fluidized bed furnace smoke outlet is integrally formed in the top of the fluidized bed furnace body, a fluidized bed furnace smoke inlet and an air fan are integrally formed in the bottom of the fluidized bed furnace body, and the air fan is arranged on one side of the fluidized bed furnace body. The return system is put into operation of the device, flue gas and raised dust generated in the process can be returned to the system through negative pressure, and the flue dust is precipitated in the system and reused; flue gas enters the system, so that fugitive emission of the flue gas is avoided; the working environment of staff is improved and the service life of equipment is prolonged.
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Description

Technical Field

[0001] The utility model relates to the technical field of fluidized bed furnaces, in particular to an environmentally friendly and energy-saving device for a feeding port of a fluidized bed furnace. Background Art

[0002] Fluidized bed furnace is a coal-fired boiler, which is one of the new combustion technologies developed in recent years. Modern fluidized bed furnace is a thermal equipment using "aggregate fluidized bed" technology. When the fluid flows from bottom to top through the static granular material layer, if the flow rate exceeds a certain limit, the bulk material layer begins to expand, creep and become fluid, turning into a pseudo-fluid state. This process is called fluidization of the bulk material layer. The granular material after fluidization flips up and down, which is similar to the boiling of the fluid, so it is also called a boiling layer. The thermal equipment that uses this method to process materials is called a fluidized bed furnace.

[0003] The existing fluidized bed furnace still has the following defects when in use:

[0004] 1. During the production process, the feed port generates positive pressure irregularly, resulting in unorganized emission of flue gas (effective ingredient: SO2); the working conditions of employees are poor;

[0005] 2. SO2 flue gas emitted around the equipment causes raw material loss and increases production costs;

[0006] 3. The SO2 flue gas emitted is a corrosive medium, which causes serious corrosion to the equipment and increases the equipment maintenance cost. Utility Model Content

[0007] The utility model aims to solve the shortcomings of the prior art, namely, poor working conditions for employees, loss of raw materials, increased production costs, serious corrosion of equipment, and increased equipment maintenance costs, and proposes an environmentally friendly and energy-saving device for the feeding port of a boiling furnace.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] An environmental protection and energy-saving device for a fluidized bed furnace feed port comprises a fluidized bed furnace body, wherein a fluidized bed furnace fume outlet is integrally formed at the top of the fluidized bed furnace body, and a fluidized bed furnace fume inlet is integrally formed at the bottom of the fluidized bed furnace body;

[0010] An air fan, the air fan is arranged on one side of the boiling furnace body, and the air outlet of the air fan is connected to the fume inlet of the boiling furnace through a first connecting component;

[0011] A double-layer feed opening, wherein the double-layer feed opening is fixedly connected to one side of the bottom of the boiling furnace body;

[0012] An air inlet assembly, which is arranged on one side of the boiling furnace body and located above the double-layer discharge port, and is used to inhale the exhausted smoke;

[0013] A cyclone separator body, wherein the cyclone separator body is arranged on one side of the boiling furnace body, an air outlet of the cyclone separator body is connected with an air inlet of the air blower through a second connecting assembly, and a cyclone separator slag outlet is arranged at the bottom of the cyclone separator body;

[0014] A dust removal component is arranged at the bottom of the double-layer feeding port and is used to remove dust.

[0015] In a possible design, the air inlet assembly includes a mounting bracket fixedly connected to one side of the boiling furnace body, a flue gas dust hood is fixedly connected to one side of the mounting bracket, an arc-shaped cavity is provided inside the flue gas dust hood, a circular hole is provided inside the flue gas dust hood, a plurality of inclined holes are provided on the inner wall of the circular hole, the inclined holes are connected to the arc-shaped cavity, and an arc-shaped groove is provided on the top of the circular hole.

[0016] In a possible design, an air hole is opened at the top of the arc-shaped cavity, and the top of the air hole is fixedly connected to an air inlet pipe of a cyclone separator, and the air inlet pipe of the cyclone separator is connected to an air inlet of the cyclone separator body.

[0017] In one possible design, the first connecting assembly includes a three-way valve fixedly connected to the air outlet of the air blower, one port of the three-way valve is fixedly connected to the first air outlet pipe of the blower, and one end of the first air outlet pipe of the blower is connected to the bottom of the flue gas inlet of the boiling furnace.

[0018] In one possible design, the second connecting assembly includes a second air supply pipe fixedly connected to the air outlet of the cyclone separator body, one end of the second air supply pipe is connected to the air inlet of the air blower, an adjusting valve is provided on the second air supply pipe, and the second air supply pipe is fixedly connected to the first air supply pipe.

[0019] In a possible design, an annular threaded hole is provided at the bottom of the smoke dust hood, the annular threaded hole is located at the bottom of the arc cavity and is connected to the arc cavity, and a threaded ring is connected to the internal thread of the annular threaded hole.

[0020] In one possible design, the dust removal assembly includes a second air outlet pipe of the fan, which is fixedly connected to a port of the three-way valve, an air hole is opened inside the double-layer discharge port, and one end of the second air outlet pipe of the fan is connected to the air hole.

[0021] In a possible design, the plurality of inclined holes are all arranged at an incline.

[0022] In the present application, when in use, the pressure at the first air outlet pipe of the fan is much greater than the pressure at the second air outlet pipe of the fan; the air volume entering the air inlet of the air fan is the first air supply pipe and the second air supply pipe; the pressure at the flue gas outlet of the boiling furnace is much greater than the pressure of the flue gas dust hood; by supplying air to the double-layer discharge port, the dust at the double-layer discharge port is returned to the interior of the boiling furnace body; through the negative pressure of the air fan, the dust at the double-layer discharge port is removed by the cyclone separator body and returned to the system; the operation of the device can return the flue gas and dust generated in the process to the system through negative pressure, and the flue gas is precipitated and reused inside the system; the flue gas enters the system to prevent unorganized flue gas emissions; improve the working environment of employees and extend the service life of equipment;

[0023] At the same time, the smoke discharged from the double-layer discharge port enters the interior of the arc cavity through the inclined hole, and then is discharged through the air hole after entering the arc cavity. Larger residues will remain in the interior of the arc groove. The bottom of the arc cavity is inclined to facilitate the falling of residues. The threaded ring can be screwed out to help the residues to be discharged. The setting of the arc groove can help materials enter, and the inclined setting of the inclined hole can prevent materials from entering the interior of the arc cavity during feeding.

[0024] In the utility model, the environmental protection and energy-saving device for the feeding port of the fluidized bed furnace can achieve the effect of sucking out the exhausted smoke and sending it back to the system through the air inlet component;

[0025] In the utility model, the environmental protection and energy-saving device for the feeding port of a fluidized bed furnace can achieve the effect of removing dust through the dust removal component;

[0026] In the utility model, the dust from the double-layer discharge port is removed by the cyclone separator body through the negative pressure of the air fan and then returned to the system. The operation of the device can return the smoke and dust generated in the process to the system through the negative pressure, and the smoke and dust are precipitated and reused inside the system; the smoke enters the system to prevent unorganized emission of smoke, improve the working environment of employees, and extend the service life of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional structural schematic diagram of an environmental protection and energy-saving device for a fluidized bed furnace feed port proposed by the utility model;

[0028] Figure 2 This is a three-dimensional structural schematic diagram of an environmental protection and energy-saving device for a fluidized bed furnace feed port proposed by the utility model;

[0029] Figure 3 This is a three-dimensional cross-sectional structural schematic diagram of an environmentally friendly and energy-saving device for a fluidized bed furnace feed port proposed by the utility model.

[0030] In the figure: 1. boiling furnace body; 2. boiling furnace flue gas inlet; 3. air fan; 4. fan first air outlet pipe; 5. first air supply pipe; 6. regulating valve; 7. three-way valve; 8. fan second air outlet pipe; 9. double-layer discharge port; 10. cyclone separator slag outlet; 11. cyclone separator body; 12. second air supply pipe; 13. cyclone separator air inlet pipe; 14. boiling furnace flue gas outlet; 15. flue gas dust hood; 16. air hole; 17. mounting frame; 18. arc cavity; 19. threaded ring; 20. inclined hole; 21. arc groove; 22. annular threaded hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] Example 1

[0033] Reference Figure 1-3 , an environmental protection and energy-saving device for a fluidized bed furnace feed port, which is used in the field of fluidized bed furnaces, comprises: a fluidized bed furnace body 1, a fluidized bed furnace fume outlet 14 is integrally formed at the top of the fluidized bed furnace body 1, and a fluidized bed furnace fume inlet 2 is integrally formed at the bottom of the fluidized bed furnace body 1;

[0034] The air fan 3 is arranged on one side of the fluidized bed furnace body 1, and the air outlet of the air fan 3 is connected to the fume inlet 2 of the fluidized bed furnace through a first connecting component, and the first connecting component includes a three-way valve 7 fixedly connected to the air outlet of the air fan 3, and one port of the three-way valve 7 is fixedly connected to the first air outlet pipe 4 of the fan, and one end of the first air outlet pipe 4 of the fan is connected to the bottom of the fume inlet 2 of the fluidized bed furnace;

[0035] A double-layer feed opening 9, which is fixedly connected to one side of the bottom of the boiling furnace body 1;

[0036] An air inlet assembly is provided on one side of the fluidized bed furnace body 1 and above the double-layer discharge port 9. The air inlet assembly is used to inhale the discharged flue gas. The air inlet assembly includes a mounting bracket 17 fixedly connected to one side of the fluidized bed furnace body 1. A flue gas dust hood 15 is fixedly connected to one side of the mounting bracket 17. An arc-shaped cavity 18 is provided inside the flue gas dust hood 15. A circular hole is provided inside the flue gas dust hood 15. A plurality of inclined holes 20 are provided on the inner wall of the circular hole. The inclined holes 20 are connected to the arc-shaped cavity 18. An arc-shaped groove 21 is provided on the top of the circular hole. An air hole 16 is provided on the top of the arc-shaped cavity 18. A cyclone separator air inlet pipe 13 is fixedly connected to the top of the air hole 16. The cyclone separator air inlet pipe 13 is connected to the cyclone separator body 11. The air inlet of the arc cavity 18 is connected, and an annular threaded hole 22 is provided at the bottom of the flue gas dust cover 15. The annular threaded hole 22 is located at the bottom of the arc cavity 18 and is connected to the arc cavity 18. The internal thread of the annular threaded hole 22 is connected with a threaded ring 19. At the same time, the flue gas discharged from the double-layer discharge port 9 enters the interior of the arc cavity 18 through the inclined hole 20, and then is discharged through the air hole 16 after entering the arc cavity 18. Larger residues will remain in the interior of the arc groove 21. The bottom of the arc cavity 18 is inclined to facilitate the falling of residues. The threaded ring 19 can be unscrewed to help the residues to be discharged. The setting of the arc groove 21 can help materials to enter. The inclined setting of the inclined hole 20 can prevent materials from entering the interior of the arc cavity 18 during feeding.

[0037] A cyclone separator body 11, the cyclone separator body 11 is arranged on one side of the boiling furnace body 1, the air outlet of the cyclone separator body 11 is connected with the air inlet of the air blower 3 through the second connecting component, a cyclone separator slag outlet 10 is arranged at the bottom of the cyclone separator body 11, the second connecting component comprises a second air supply pipe 12 fixedly connected to the air outlet of the cyclone separator body 11, one end of the second air supply pipe 12 is connected with the air inlet of the air blower 3, an adjusting valve 6 is arranged on the second air supply pipe 12, and the second air supply pipe 12 is fixedly connected with the first air supply pipe 5;

[0038] The dust removal component is arranged at the bottom of the double-layer discharge port 9 and is used to remove dust. The dust removal component includes a second air outlet pipe 8 of the fan, which is fixedly connected to a port of the three-way valve 7. An air hole 16 is opened inside the double-layer discharge port 9, and one end of the second air outlet pipe 8 of the fan is connected to the air hole 16. The pressure at the first air outlet pipe 4 of the fan is much greater than the pressure at the second air outlet pipe 8 of the fan; the air volume entering the air inlet of the air fan 3 is the first air supply pipe 5 and the second air supply pipe 12; the fume outlet 1 of the boiling furnace The pressure at point 4 is much greater than the pressure of the smoke dust hood 15; by supplying air to the double-layer discharge port 9, the dust at the double-layer discharge port 9 is returned to the interior of the boiling furnace body 1; through the negative pressure of the air fan 3, the dust at the double-layer discharge port 9 is removed by the cyclone separator body 11 and then returned to the system; the operation of the device can return the smoke and dust generated in the process to the system through negative pressure, and the smoke and dust are precipitated and reused inside the system; the smoke enters the system to prevent unorganized smoke emissions; improve the working environment of employees and extend the service life of equipment.

[0039] Example 2

[0040] refer to Figure 1-3 , improved on the basis of Example 1: the plurality of inclined holes 20 are all arranged at an incline.

[0041] However, as is well known to those skilled in the art, the working principles and wiring methods of the air fan 3, the cyclone separator body 11 and the boiling furnace body 1 are commonplace, and are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An environmental protection and energy-saving device for a fluidized bed furnace, characterized in that: include: A fluidized bed furnace body (1), wherein a fluidized bed furnace smoke outlet (14) is integrally formed at the top of the fluidized bed furnace body (1), and a fluidized bed furnace smoke inlet (2) is integrally formed at the bottom of the fluidized bed furnace body (1); An air fan (3), the air fan (3) being arranged on one side of the fluidized bed furnace body (1), the air outlet of the air fan (3) being connected to the fume inlet (2) of the fluidized bed furnace via a first connecting assembly; A double-layer feed opening (9), wherein the double-layer feed opening (9) is fixedly connected to one side of the bottom of the boiling furnace body (1); An air inlet assembly, the air inlet assembly being arranged on one side of the boiling furnace body (1) and located above the double-layer discharge port (9), the air inlet assembly being used to inhale the exhausted smoke; A cyclone separator body (11), the cyclone separator body (11) being arranged on one side of the boiling furnace body (1), the air outlet of the cyclone separator body (11) being connected to the air inlet of the air blower (3) via a second connecting assembly, and a cyclone separator slag outlet (10) being arranged at the bottom of the cyclone separator body (11); A dust removal component is arranged at the bottom of the double-layer discharge port (9) and is used to remove dust.

2. The environmental protection and energy-saving device for the feeding port of a fluidized bed furnace according to claim 1, characterized in that: The air inlet assembly comprises a mounting frame (17) fixedly connected to one side of a boiling furnace body (1); a smoke dust hood (15) is fixedly connected to one side of the mounting frame (17); an arc-shaped cavity (18) is provided inside the smoke dust hood (15); a circular hole is provided inside the smoke dust hood (15); a plurality of inclined holes (20) are provided on the inner wall of the circular hole; the inclined holes (20) are connected to the arc-shaped cavity (18); and an arc-shaped groove (21) is provided on the top of the circular hole.

3. The environmental protection and energy-saving device for the feeding port of a fluidized bed furnace according to claim 2, characterized in that: An air hole (16) is provided at the top of the arc-shaped cavity (18), and the top of the air hole (16) is fixedly connected to a cyclone separator air inlet pipe (13), and the cyclone separator air inlet pipe (13) is connected to the air inlet of the cyclone separator body (11).

4. The environmental protection and energy-saving device for the feeding port of a fluidized bed furnace according to claim 1, characterized in that: The first connecting component comprises a three-way valve (7) fixedly connected to the air outlet of the air blower (3), one port of the three-way valve (7) being fixedly connected to the first air outlet pipe (4) of the blower, and one end of the first air outlet pipe (4) of the blower being connected to the bottom of the fume inlet (2) of the boiling furnace.

5. The environmental protection and energy-saving device for the feeding port of a fluidized bed furnace according to claim 1, characterized in that: The second connecting component comprises a second air supply pipe (12) fixedly connected to the air outlet of the cyclone separator body (11); one end of the second air supply pipe (12) is connected to the air inlet of the air blower (3); a regulating valve (6) is provided on the second air supply pipe (12); and the second air supply pipe (12) is fixedly connected to the first air supply pipe (5).

6. The environmental protection and energy-saving device for the feeding port of a fluidized bed furnace according to claim 2, characterized in that: An annular threaded hole (22) is provided at the bottom of the smoke dust hood (15). The annular threaded hole (22) is located at the bottom of the arc cavity (18) and is connected to the arc cavity (18). The inner thread of the annular threaded hole (22) is connected to a threaded ring (19).

7. The environmental protection and energy-saving device for the feeding port of a fluidized bed furnace according to claim 4, characterized in that: The dust removal component comprises a second air outlet pipe (8) of the fan, the second air outlet pipe (8) of the fan is fixedly connected to a port of the three-way valve (7), an air hole (16) is provided inside the double-layer discharge port (9), and one end of the second air outlet pipe (8) of the fan is connected to the air hole (16).

8. The environmental protection and energy-saving device for the feeding port of a fluidized bed furnace according to claim 2, characterized in that: The plurality of inclined holes (20) are all arranged at an incline.