Energy-saving lime kiln

Abstract

The utility model relates to the technical field of lime kilns, and in particular to an energy-saving lime kiln, comprising a base, a kiln body being fixedly connected to the top of the base, a combustion chamber being arranged at the bottom of the inner cavity of the kiln body, a partition being fixedly connected to the inner wall of the kiln body being arranged above the combustion chamber, a reaction chamber being arranged above the partition, a smoke passage being opened at the top of the kiln body, a filter box being fixedly connected to the top of the kiln body and communicating with the inner cavity of the kiln body through the smoke passage, a filter assembly being arranged in the inner cavity of the filter box, and the utility model has a filtering capability, so the smoke generated during combustion will be filtered before being discharged, so as to avoid the direct discharge of the smoke and the impact on the physical and mental health of personnel and the surrounding environment, and the heat source can be recycled and reused, so the production process is relatively energy-saving, which not only reduces the production cost, but also follows the concept of green environmental protection.

Description

Technical Field

[0001] The utility model relates to the technical field of lime kilns, in particular to an energy-saving lime kiln. Background Art

[0002] Lime kiln is a kind of heat treatment equipment specially used for producing lime. It plays an important role in many industrial fields. The working principle of lime kiln is to use high temperature to pyrolyze limestone (the main component is calcium carbonate) to decompose it into calcium oxide (ie lime) and carbon dioxide gas. This process is called lime production process. Its main purpose is to convert calcium carbonate in limestone into easy-to-use lime products. There are many types of lime kilns. According to different classification standards, they can be divided into vertical lime kilns, rotary lime kilns, gas-fired lime kilns, etc. Different types of lime kilns have certain differences in structure, performance and application fields, but their basic working principles are the same. They all produce lime through high-temperature heat treatment. In short, lime kiln, as an important industrial equipment, plays a key role in steel, chemical industry, building materials and other fields. With the development of science and technology, the performance and efficiency of lime kilns are also constantly improving, providing better quality lime products for industrial production.

[0003] Lime kilns are needed to produce lime. Although traditional lime kilns have the ability to produce lime, they still have some shortcomings. For example, they lack filtering ability, so the smoke generated during combustion will be directly discharged. The direct discharge of smoke will not only harm the physical and mental health of personnel, but also affect the surrounding environment, and it is difficult to recycle and reuse the heat source. Therefore, its production process is relatively energy-wasting, which will not only increase production costs, but also violate the concept of green environmental protection. Therefore, an energy-saving lime kiln is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an energy-saving lime kiln, which has filtering capabilities, so that the smoke generated during combustion will be filtered before being discharged, avoiding direct emission of smoke and affecting the physical and mental health of personnel and the surrounding environment, and it can recycle and reuse heat sources, so its production process is more energy-saving, which not only reduces production costs, but also follows the concept of green environmental protection to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An energy-saving lime kiln comprises a base, the top of which is fixedly connected to a kiln body, a combustion chamber is provided at the bottom of the inner cavity of the kiln body, a partition fixedly connected to the inner wall of the kiln body is provided above the combustion chamber, a reaction chamber is provided above the partition, a smoke groove is provided on the top of the kiln body, a filter box connected to the inner cavity of the kiln body through the smoke groove is fixedly connected to the top of the kiln body, a filter assembly is provided in the inner cavity of the filter box, the top of the filter box is connected and fixedly connected to an exhaust box, the inner cavity of the exhaust box is provided with an exhaust fan, a recovery assembly is symmetrically provided on the top of the exhaust fan, and hot air flow channels are symmetrically provided in the inner cavities of the two side walls of the kiln body.

[0007] Preferably, the filter assembly includes an activated carbon filter and a HEPA high-efficiency filter, and a gap is provided between the activated carbon filter and the HEPA high-efficiency filter. The activated carbon filter and the HEPA high-efficiency filter are both slidably connected to the inner wall of the filter box via a slide rail.

[0008] Preferably, a pull-out plate is provided on one side of the filter box, one end of the activated carbon filter and one end of the HEPA high-efficiency filter are fixedly connected to the pull-out plate, and a pull-out handle is fixedly connected to the pull-out plate.

[0009] Preferably, the recovery component comprises an air duct having one end connected to the exhaust box, and one end of the air duct away from the exhaust box passes through the top of the side wall of the kiln body and is connected to the hot air flow channel.

[0010] Preferably, the inner cavities of the hot air flow channels are arranged at equal intervals and staggered with downwardly inclined wind shields, and the bottom end of the hot air flow channel passes through the outer wall of the kiln body and is connected to an exhaust scoop.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model discloses to be provided with the utility model, the combustion chamber is provided for burning limestone, the reaction chamber is provided for placing limestone and carrying out pyrolysis reaction, the smoke generated in the production process can be introduced into the filter box through the smoke passage, the filter assembly is provided for doubly filtering the smoke before discharging, so as to avoid the direct discharge of smoke and the influence on the physical and mental health of personnel and the surrounding environment, the exhaust fan is provided for introducing the filtered smoke into the hot air flow channel through the recovery assembly, so that the heat carried by the smoke acts on the kiln body for auxiliary heating, and the heat source is recovered and reused, so that the production process is more energy-saving, which not only reduces the production cost, but also complies with the concept of green environmental protection, the wind shield is provided for blocking the smoke entering the hot air flow channel to a certain extent, so as to prolong the time that the smoke exists in the hot air flow channel and improve the utilization rate of the heat in the smoke, and the smoke after filtering and recycling can be discharged through the exhaust scoop. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the filter assembly of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the hot air flow channel of the utility model.

[0017] In the figure: 1. base; 2. kiln body; 3. combustion chamber; 4. partition; 5. reaction chamber; 6. flue gas trough; 7. filter box; 8. activated carbon filter; 9. HEPA high-efficiency filter; 10. pull-out plate; 11. pull-out handle; 12. exhaust box; 13. exhaust fan; 14. air guide duct; 15. hot air flow channel; 16. wind shield; 17. exhaust scoop. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0020] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0021] See also Figure 1-4 , the utility model provides a technical solution:

[0022] An energy-saving lime kiln comprises a base 1, a kiln body 2 is fixedly connected to the top of the base 1, a combustion chamber 3 is arranged at the bottom of the inner cavity of the kiln body 2, a partition 4 fixedly connected to the inner wall of the kiln body 2 is arranged above the combustion chamber 3, a reaction chamber 5 is arranged above the partition 4, a smoke passage 6 is opened at the top of the kiln body 2, a filter box 7 connected to the inner cavity of the kiln body 2 through the smoke passage 6 is fixedly connected to the top of the kiln body 2, a filter assembly is arranged in the inner cavity of the filter box 7, an exhaust box 12 is connected and fixedly connected to the top of the filter box 7, an exhaust fan 13 is arranged in the inner cavity of the exhaust fan 13, a recovery assembly is symmetrically arranged on the top of the exhaust fan 13, and hot air flow channels 15 are symmetrically arranged in the inner cavity of the two side walls of the kiln body 2.

[0023] The filter assembly includes an activated carbon filter 8 and a HEPA high-efficiency filter 9, and a gap is provided between the activated carbon filter 8 and the HEPA high-efficiency filter 9. The activated carbon filter 8 and the HEPA high-efficiency filter 9 are both slidably connected to the inner wall of the filter box 7 through a slide rail. A pull-out plate 10 is provided on one side of the filter box 7. One end of the activated carbon filter 8 and the HEPA high-efficiency filter 9 are fixedly connected to the pull-out plate 10, and a pull-out handle 11 is fixedly connected to the pull-out plate 10. The filter assembly can perform double filtering on the flue gas and then discharge it to avoid direct discharge of the flue gas and the impact on the physical and mental health of personnel and the surrounding environment; the recovery assembly includes an air duct 14 connected to the exhaust box 12 at one end, and the end of the air duct 14 away from the exhaust box 12 passes through the top of the side wall of the kiln body 2 and is connected to the hot air flow channel 15 is connected, the inner cavity of the hot air flow channel 15 is arranged at equal intervals and is staggered with wind shields 16 arranged downwardly inclined, the bottom end of the hot air flow channel 15 passes through the outer wall of the kiln body 2 and is connected with an exhaust scoop 17 at this end, the exhaust fan 13 can introduce the filtered flue gas into the hot air flow channel 15 through the recovery component, so that the heat carried in the flue gas acts on the kiln body 2 for auxiliary heating, and the heat source is recovered and reused. Therefore, its production process is more energy-saving, which not only reduces the production cost but also follows the concept of green environmental protection. The wind shield 16 can block the flue gas entering the hot air flow channel 15 to a certain extent, so as to prolong the time that the flue gas exists in the hot air flow channel 15 and improve the utilization rate of the heat in the flue gas. The exhaust scoop 17 can discharge the flue gas that has been filtered and recycled.

[0024] Working process: combustion chamber 3 can burn limestone, reaction chamber 5 can place limestone and carry out pyrolysis reaction, flue gas channel 6 can lead flue gas generated in the production process into filter box 7, filter assembly can double filter flue gas before discharge, avoid direct discharge of flue gas and affect the physical and mental health of personnel and the surrounding environment, after flue gas enters filter box 7, it will pass through activated carbon filter 8 and HEPA high efficiency filter 9 in turn, activated carbon filter 8 has excellent gas dynamic performance, small volume density, large specific surface area, high adsorption efficiency, small wind resistance coefficient, can remove particulate matter and pollutants in flue gas, HEPA high efficiency filter 9 can filter flue gas again, it has a diameter of 0. The removal efficiency of particles larger than 3 microns can reach more than 99.7%, which is the most effective filtering medium for pollutants such as dust and bacteria. Therefore, the purification ability is very good. The exhaust fan 13 can introduce the filtered flue gas into the hot air flow channel 15 through the air duct 14, so that the heat carried in the flue gas acts on the kiln body 2 for auxiliary heating, and the heat source is recycled and reused. Therefore, its production process is more energy-saving, which not only reduces production costs, but also follows the concept of green environmental protection. The wind shield 16 can block the flue gas entering the hot air flow channel 15 to a certain extent, so as to prolong the time that the flue gas exists in the hot air flow channel 15 and improve the utilization rate of the heat in the flue gas. The exhaust scoop 17 can discharge the flue gas that has been filtered and recycled.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the scope and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving lime kiln, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a kiln body (2); a combustion chamber (3) is provided at the bottom of the inner cavity of the kiln body (2); a partition (4) fixedly connected to the inner wall of the kiln body (2) is provided above the combustion chamber (3); a reaction chamber (5) is provided above the partition (4); a smoke passage (6) is provided at the top of the kiln body (2); a filter box (7) connected to the inner cavity of the kiln body (2) through the smoke passage (6) is fixedly connected to the top of the kiln body (2); a filter assembly is provided in the inner cavity of the filter box (7); the top of the filter box (7) is connected and fixedly connected to an exhaust box (12); an exhaust fan (13) is provided in the inner cavity of the exhaust box (12); a recovery assembly is symmetrically provided on the top of the exhaust fan (13); and hot air flow channels (15) are symmetrically provided in the inner cavities of the two side walls of the kiln body (2).

2. An energy-saving lime kiln according to claim 1, characterized in that: The filter assembly comprises an activated carbon filter (8) and a HEPA high efficiency filter (9), and a gap is provided between the activated carbon filter (8) and the HEPA high efficiency filter (9), and the activated carbon filter (8) and the HEPA high efficiency filter (9) are both slidably connected to the inner wall of the filter box (7) via a slide rail.

3. An energy-saving lime kiln according to claim 2, characterized in that: A pull-out plate (10) is provided on one side of the filter box (7), one end of the activated carbon filter (8) and the HEPA high-efficiency filter (9) are fixedly connected to the pull-out plate (10), and a pull-out handle (11) is fixedly connected to the pull-out plate (10).

4. An energy-saving lime kiln according to claim 1, characterized in that: The recovery component comprises an air duct (14) having one end connected to the exhaust box (12); the end of the air duct (14) away from the exhaust box (12) passes through the top of the side wall of the kiln body (2) and is connected to the hot air flow channel (15).

5. The energy-saving lime kiln according to claim 1, characterized in that: The inner cavity of the hot air flow channel (15) is arranged at equal intervals and staggered with downwardly inclined wind shields (16). The bottom end of the hot air flow channel (15) penetrates the outer wall of the kiln body (2) and is connected to an exhaust scoop (17).

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