Multi-section different-diameter rotary kiln incineration combustion-supporting device

Abstract

The utility model discloses a multi-section different-diameter burning combustion-supporting device for a rotary kiln, and belongs to the technical field of rotary kilns. Comprising a fixing table, a rotary kiln is arranged at the top of the fixing table, a kiln tail cover is arranged at one end of the rotary kiln, a combustion-supporting assembly is arranged on the side wall of the kiln tail cover, a kiln head cover is arranged at the other end of the rotary kiln, an exhaust pipe is arranged on the side wall of the kiln head cover, and a purification assembly is arranged on the circumferential outer wall of the exhaust pipe. Fuel supply quantity is accurately controlled through the combustor, fuel flame jetting speed and pressure are increased, so that hot smoke is increased, smoke flow speed and turbulence are increased, effective utilization of heat is guaranteed, high-temperature smoke is effectively conveyed into the furnace through the oxygen supplementing fan, the inside of the rotary kiln is heated evenly, incineration quality is improved, and the combustion efficiency is improved. Waste gas is exhausted through the exhaust pipe, harmful particles in the waste gas are precipitated through the purification assembly, and environment pollution is prevented. According to the structural design, the interior of the rotary kiln is heated uniformly, the incineration quality is good, the fuel combustion efficiency is high, and flue gas is conveniently purified.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, and more specifically to a multi-stage, different-diameter rotary kiln incineration and combustion-supporting device. Background Art

[0002] A rotary bed kiln refers to a rotating calcining kiln, which is similar in appearance to a rotary bed and is also called a rotary bed kiln. It belongs to the category of building materials equipment. Rotary kilns can be divided into cement kilns, metallurgical chemical kilns and lime kilns according to the materials they process. Cement kilns are mainly used to calcine cement clinker and are divided into two categories: dry process cement kilns and wet process cement kilns. Metallurgical chemical kilns are mainly used for roasting various minerals in the metallurgical industry.

[0003] The patent document with publication number CN217303522U in the prior art provides a rotary kiln combustion-supporting device. When the device needs to clean two filter screens, the pull ring is pulled upward, and the pull ring drives the filter screen to move upward through the mounting block. The two filter screens move upward and are lifted out of the shell through the slot. Conversely, the filter screens can be inserted into the slot, which is convenient for cleaning and replacing the filter screens. The installation and disassembly are simple and convenient, saving time and effort. At the same time, the oxygen tube is connected to the external oxygen tank through a pipeline, so that when the exhaust fan works to blow air into the rotary kiln, oxygen can be sent into the rotary kiln, and the combustion-supporting effect is good.

[0004] Although this device has many beneficial effects, the following problems still exist: during the use of this device, the heating in the rotary kiln is uneven, the incineration quality cannot meet the design requirements, and the fuel combustion efficiency is low; secondly, during the use of this device, the flue gas is directly discharged and pollutes the environment, which needs to be improved. In view of this, we propose a multi-stage, different-diameter rotary kiln incineration combustion-supporting device. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of the utility model is to provide a multi-stage, different-diameter rotary kiln incineration and combustion-supporting device to solve the problems raised in the above background technology, such as uneven heating in the existing rotary kiln, poor incineration quality, low fuel combustion efficiency, and direct emission of flue gas that pollutes the environment.

[0007] 2. Technical solution

[0008] A multi-stage, different-diameter rotary kiln incineration and combustion-supporting device comprises a fixed platform, a rotary kiln is provided on the top of the fixed platform, a kiln tail hood is provided at one end of the rotary kiln, a combustion-supporting assembly is provided on the side wall of the kiln tail hood, the combustion-supporting assembly comprises a supplementary combustion port, a burner is provided at one end of the supplementary combustion port, a plurality of first oxygen supply ports are provided on the circumferential outer wall of the kiln tail hood, a second oxygen supply port is provided on the side wall of the kiln tail hood, a hose is provided at one end of each of the first and second oxygen supply ports, a five-way joint is provided at the other end of the hose, an oxygen supply fan is provided at the other end of the five-way joint, a kiln head hood is provided at the other end of the rotary kiln, an exhaust pipe is provided on the side wall of the kiln head hood, a purification assembly is provided on the circumferential outer wall of the exhaust pipe, and the oxygen supply fan is electrically connected to an external power supply.

[0009] Preferably, the purification component includes a liquid storage tank, a tank cover is threadedly connected to the bottom of the liquid storage tank, a water pump is provided on the side wall of the tank cover, a water supply ring is provided on the inner circumferential wall of the exhaust pipe, a plurality of atomizing nozzles are provided in a circular array on the inner circumferential wall of the water supply ring, and the water pump is electrically connected to an external power supply.

[0010] Preferably, the supplementary combustion port is arranged on the lower side of the side wall of the kiln tail hood, and the burner output end is located 5 cm above the material bed.

[0011] Preferably, the directions of the plurality of first oxygen supply ports are perpendicular to the direction of the second oxygen supply ports, and the hose is made of a glass magnesium composite board.

[0012] Preferably, the bottoms of the kiln tail hood and the kiln head hood are both provided with mounting seats, and the bottoms of the mounting seats are provided with support plates.

[0013] Preferably, a clamping block is provided at the bottom of the mounting seat, a clamping slot is provided at the top of the support plate, and the size of the clamping block matches the size of the clamping slot.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] The utility model accurately controls the fuel supply through the burner, increases the fuel flame injection speed and pressure, thereby increasing the hot flue gas flow rate and turbulence, ensuring that the heat is effectively utilized, and by turning on the oxygen supply fan to transport oxygen from the hose, effectively sending the high-temperature flue gas to the furnace, so that the rotary kiln is heated evenly, improving the incineration quality, and exhaust gas is discharged through the exhaust pipe;

[0017] Secondly, lime water is added by twisting the box cover, and the water pump is turned on to allow the lime water inside the liquid storage tank to flow into the water delivery ring, and water mist is sprayed out through the atomizing nozzle to precipitate harmful particles in the exhaust gas to prevent environmental pollution; the structural design of the utility model ensures uniform heating in the rotary kiln, good incineration quality, high fuel combustion efficiency, and is convenient for purifying and treating flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a partial structural diagram of the combustion-supporting component of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the kiln head cover of the utility model;

[0021] Figure 4 This is a schematic cross-sectional view of a partial structure of the purification component of the present utility model;

[0022] Figure 5 It is a schematic diagram of the partial structure of the utility model;

[0023] Explanation of the numbers in the figure: 1. Fixed platform; 2. Rotary kiln; 3. Kiln tail cover; 4. Combustion-supporting assembly; 5. Kiln head cover; 6. Exhaust pipe; 7. Purification assembly; 8. Mounting seat; 9. Support plate; 10. Block; 11. Slot; 401. Refueling port; 402. Burner; 403. First oxygen supply port; 404. Second oxygen supply port; 405. Hose; 406. Five-way joint; 407. Oxygen supply fan; 701. Liquid storage tank; 702. Tank cover; 703. Water pump; 704. Water supply ring; 705. Atomizing nozzle. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0027] See also Figure 1-5 ,The utility model provides a technical solution:

[0028] A multi-stage, different-diameter rotary kiln incineration and combustion-supporting device comprises a fixed platform 1, a rotary kiln 2 is welded to the top of the fixed platform 1, a kiln tail hood 3 is welded to one end of the rotary kiln 2, a combustion-supporting assembly 4 is fixedly provided on the side wall of the kiln tail hood 3, the combustion-supporting assembly 4 comprises a supplementary combustion port 401, a burner 402 is clamped at one end of the supplementary combustion port 401, a plurality of first oxygen supply ports 403 are fixedly provided on the circumferential outer wall of the kiln tail hood 3, a second oxygen supply port 404 is fixedly provided on the side wall of the kiln tail hood 3, a hose 405 is fixedly provided on one end of the first oxygen supply port 403 and the second oxygen supply port 404, a five-way joint 406 is fixedly provided on the other end of the hose 405, an oxygen supply fan 407 is clamped on the other end of the five-way joint 406, a kiln head hood 5 is welded to the other end of the rotary kiln 2, an exhaust pipe 6 is fixedly provided on the side wall of the kiln head hood 5, a purification assembly 7 is fixedly provided on the circumferential outer wall of the exhaust pipe 6, and the oxygen supply fan 407 is electrically connected to an external power supply. The utility model accurately controls the fuel supply through the burner 402, increases the fuel flame injection speed and pressure, thereby increasing the hot flue gas, increasing the flue gas flow rate and turbulence, ensuring that the heat is effectively utilized, and by turning on the oxygen supply fan 407 to transport oxygen from the hose 405, effectively sending the high-temperature flue gas to the furnace, so that the rotary kiln 2 is heated evenly, improving the incineration quality, and exhaust gas is discharged through the exhaust pipe 6.

[0029] Specifically, purification assembly 7 includes a liquid storage tank 701, with a lid 702 threadedly connected to the bottom of the tank. A water pump 703 is fixed to the sidewall of lid 702. A water supply ring 704 is welded to the inner circumference of exhaust pipe 6. Multiple atomizing nozzles 705 are fixed in a circular array around the inner circumference of water supply ring 704. Water pump 703 is electrically connected to an external power source. By turning lid 702 to replenish limewater, water pump 703 is turned on to allow limewater from tank 701 to flow into water supply ring 704. Atomizing nozzles 705 then spray water mist to precipitate harmful particles in the exhaust gas, preventing environmental pollution.

[0030] Furthermore, the afterburning port 401 is located on the lower side of the kiln tail hood 3, and the output end of the burner 402 is located 5 cm above the material bed. The afterburning port 401 on the lower side ensures that the flame fits the thickness of the material bed in the rotary kiln 2, thereby improving the direct heat energy utilization rate.

[0031] It's worth noting that the orientation of the multiple first oxygen supply ports 403 is perpendicular to the orientation of the second oxygen supply ports 404, and the hose 405 is made of a glass-magnesium composite board. The perpendicular orientation of the multiple first oxygen supply ports 403 and second oxygen supply ports 404 facilitates convection of the blown oxygen, accelerating air circulation and moving the high-temperature flue gas more quickly. The glass-magnesium composite board is a new type of high-tech composite board, composed of two layers of high-strength inorganic material and a layer of thermal insulation material. It features lightweight, high strength, non-combustibility, sound insulation, and compatibility in humid environments, making it a new generation of energy-saving, environmentally friendly, and green product.

[0032] It is worth noting that the bottom of the kiln tail hood 3 and the kiln head hood 5 are fixed with a mounting base 8, and the bottom of the mounting base 8 is clamped with a support plate 9. The mounting base 8 and the support plate 9 facilitate the kiln tail hood 3 and the kiln head hood 5 to be more stable.

[0033] In addition, a card block 10 is fixed to the bottom of the mounting base 8, and a card slot 11 is opened on the top of the support plate 9. The size of the card block 10 matches the size of the card slot 11. The card block 10 that matches the size of the card slot 11 facilitates quick disassembly and assembly of the mounting base 8.

[0034] In addition, the circuits, electronic components, and modules involved in this utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to the internal structure and method.

[0035] The device or equipment models involved in this article are as follows:

[0036] The model of oxygen supply fan 407 can be: 4-36-5 / A;

[0037] The model of the water pump 703 may be: IS65-50-160.

[0038] Working principle: When the device is needed to carry out combustion-supporting in a multi-stage, different-diameter rotary kiln, place the fixed platform 1 at the required position, install the burner 402 at one end of the supplementary combustion port 401, start the burner 402 to burn the material inside the rotary kiln 2, start the oxygen supply fan 407 to transport oxygen into the rotary kiln 2 from the hose 405, and the exhaust gas is discharged from the exhaust pipe 6, start the water pump 703 to allow the lime water inside the liquid storage tank 701 to flow into the water supply ring 704, and make the atomizing nozzle 705 spray water mist to precipitate harmful particles in the exhaust gas. When the lime water is insufficient, screw the box cover 702 to replenish it.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage rotary kiln combustion and combustion-supporting device, comprising a fixed platform (1), characterized in that: A rotary kiln (2) is provided on the top of the fixed platform (1), a kiln tail hood (3) is provided at one end of the rotary kiln (2), a combustion-supporting assembly (4) is provided on the side wall of the kiln tail hood (3), the combustion-supporting assembly (4) comprises a supplementary combustion port (401), a burner (402) is provided at one end of the supplementary combustion port (401), a plurality of first oxygen supplement ports (403) are provided on the circumferential outer wall of the kiln tail hood (3), a second oxygen supplement port (404) is provided on the side wall of the kiln tail hood (3), the first oxygen supplement port ( 403) and one end of the second oxygen supply port (404) are both provided with a hose (405), the other end of the hose (405) is provided with a five-way joint (406), the other end of the five-way joint (406) is provided with an oxygen supply fan (407), the other end of the rotary kiln (2) is provided with a kiln head cover (5), the side wall of the kiln head cover (5) is provided with an exhaust pipe (6), the circumferential outer wall of the exhaust pipe (6) is provided with a purification component (7), and the oxygen supply fan (407) is electrically connected to an external power supply.

2. The multi-stage, different-diameter rotary kiln incineration and combustion-supporting device according to claim 1 is characterized in that: The purification component (7) comprises a liquid storage tank (701), a tank cover (702) is threadedly connected to the bottom of the liquid storage tank (701), a water pump (703) is provided on the side wall of the tank cover (702), a water supply ring (704) is provided on the inner circumferential wall of the exhaust pipe (6), a plurality of atomizing nozzles (705) are provided in a circular array on the inner circumferential wall of the water supply ring (704), and the water pump (703) is electrically connected to an external power supply.

3. The multi-stage, different-diameter rotary kiln incineration and combustion-supporting device according to claim 2 is characterized in that: The supplementary combustion port (401) is arranged on the lower side of the side wall of the kiln tail cover (3), and the output end of the burner (402) is located 5 cm above the material bed.

4. The multi-stage, different-diameter rotary kiln incineration and combustion-supporting device according to claim 3 is characterized in that: The directions of the plurality of first oxygen supply ports (403) are all perpendicular to the direction of the second oxygen supply port (404), and the material of the hose (405) is a glass magnesium composite board.

5. The multi-stage, different-diameter rotary kiln incineration and combustion-supporting device according to claim 4 is characterized in that: The bottoms of the kiln tail cover (3) and the kiln head cover (5) are both provided with mounting seats (8), and the bottoms of the mounting seats (8) are provided with support plates (9).

6. The multi-stage, different-diameter rotary kiln incineration and combustion-supporting device according to claim 5, characterized in that: The bottom of the mounting seat (8) is provided with a clamping block (10), and the top of the support plate (9) is provided with a clamping slot (11). The size of the card block (10) matches the size of the card slot (11).

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