Pre-combustion furnace and solid waste combustion treatment system

Abstract

The utility model relates to the technical field of solid waste treatment, and provides a pre-combustion furnace and a solid waste combustion treatment system. The pre-combustion furnace comprises a furnace body, a suspended dispersion platform, a feeding hole and an air inlet; a hearth is arranged in the furnace body; the suspended dispersion platform comprises a plurality of suspended dispersion columns, the suspended dispersion columns are arranged in the hearth at intervals in the first direction, and a first injection opening is formed in one side of each suspended dispersion column; the feeding hole is formed in the furnace body and is communicated with the hearth; the air inlet is formed in the furnace body and is communicated with the hearth; the feeding port is located above the suspended dispersing platform, and the air inlet is formed in one side of the suspended dispersing platform. The pre-combustion furnace and the solid waste combustion treatment system provided by the utility model are used for solving the problems that in the prior art, the technical scheme that the pre-combustion furnace is adopted for pre-combustion of alternative fuel is low in fuel dispersion degree, stiff in material bed, insufficient in winnowing and low in mixing degree, so that combustion is insufficient, the combustion rate is low, the equipment size is large, and the cost is high. And investment is high.

Description

Technical Field

[0001] The utility model relates to the technical field of solid waste treatment, in particular to a pre-combustion furnace and a solid waste combustion treatment system. Background Art

[0002] In recent years, using combustible solid waste as an alternative fuel for cement production can reduce the use of fossil fuels and reduce carbon emissions. However, the sources of combustible solid waste are complex, and the physical and chemical composition fluctuates greatly. Solid waste represented by urban domestic waste has a high water content (up to about 50%) and a large size (up to about 500 mm), which is much larger than traditional fossil fuels.

[0003] At present, combustible solid waste is directly put into the decomposition furnace after simple crushing. Because the size of the crushed combustible solid waste is large and the water content is high, it is difficult for the solid waste fuel to burn in the cement plant decomposition furnace, resulting in a large amount of unburned solid waste in the five-stage cyclone. Some large-sized solid waste even falls directly into the smoke chamber. The unburned solid waste enters the rotary kiln with the hot raw materials, forming a local reducing atmosphere, and at the same time causing the liquid phase to appear in the rotary kiln in advance, forming rings in the rotary kiln, and growing thick kiln skin, resulting in a decrease in production capacity and even affecting quality, resulting in production and operation losses. Fluctuations in the combustion efficiency in the decomposition furnace will also cause drastic fluctuations in CO, affecting the operating efficiency of the downstream nitrogen oxide denitrification system.

[0004] To solve this problem, the use of pre-combustion furnaces for pre-combustion of alternative fuels has become the mainstream technical route. Relevant patents such as ZL202320491668.5 and ZL202211037758.3 proposed a solution combining a pre-combustion furnace with a cement kiln decomposition furnace. However, the existing technical solutions for pre-combustion of alternative fuels using pre-combustion furnaces have the problems of low fuel dispersion, stagnant material layers, insufficient air separation and low mixing, resulting in incomplete combustion and low combustion rate, resulting in large equipment size and high investment.

[0005] Therefore, there is an urgent need for a pre-combustion furnace and a solid waste combustion treatment system to solve the above problems. Summary of the invention

[0006] The utility model provides a precombustion furnace and a solid waste combustion treatment system, which are used to solve the defects of low fuel dispersion, stagnant material layer, insufficient air selection and low mixing degree in the technical solution of precombustion of alternative fuel using a precombustion furnace in the prior art, thereby incomplete combustion, low combustion rate, large equipment size and high investment.

[0007] The utility model provides a pre-combustion furnace, comprising:

[0008] A furnace body, wherein a furnace chamber is provided in the furnace body;

[0009] A suspended dispersion platform, the suspended dispersion platform comprising a plurality of suspended dispersion columns, the plurality of suspended dispersion columns being arranged in the furnace at intervals along a first direction, and a first blowing port being provided on one side of the suspended dispersion column;

[0010] A feed inlet, the feed inlet being arranged on the furnace body and being in communication with the furnace;

[0011] An air inlet, the air inlet being arranged on the furnace body and being in communication with the furnace;

[0012] The feed inlet is located above the suspended dispersing platform, and the air inlet is arranged on one side of the suspended dispersing platform.

[0013] According to the precombustion furnace provided by the utility model, an inclined platform is provided at the bottom of the furnace, a plurality of upward-lifting dispersion platforms are arranged in an array on the inclined platform, a second blowing port is provided on the upward-lifting dispersion platform, a first guide surface is provided on the upward-lifting dispersion platform, an angle between the first guide surface and the inclined platform is greater than 90°, and the second blowing port is arranged facing the first guide surface adjacent to the upward-lifting dispersion platform.

[0014] According to the pre-combustion furnace provided by the utility model, a blanking surface is provided between adjacent upward dispersing platforms, one side of the first guide surface is connected to the blanking surface, and the second blowing port is arranged facing the blanking surface.

[0015] According to the pre-combustion furnace provided by the utility model, second guide surfaces are provided on both sides of the first guide surface, the angle between the second guide surface and the inclined platform is greater than 90°, and one side of the second guide surface is connected to the blanking surface.

[0016] The pre-combustion furnace provided by the utility model further includes a gas source, and the first blowing port and / or the second blowing port are connected to the gas source.

[0017] According to the pre-combustion furnace provided by the utility model, a refractory material protective layer is provided on the second blowing port.

[0018] According to the precombustion furnace provided by the utility model, a first guide surface is provided on the first side of the suspended dispersion column, a second guide surface is provided on the second side of the suspended dispersion column, and a guide channel is formed between the first guide surface and the second guide surface of the adjacent suspended dispersion column.

[0019] According to the pre-combustion furnace provided by the utility model, a refractory material protective layer is provided on the suspended dispersion column.

[0020] Another aspect of the utility model provides a solid waste combustion treatment system, comprising:

[0021] Calciner;

[0022] The precombustion furnace as described in any of the above items, wherein the discharge port of the precombustion furnace is connected to the decomposition furnace.

[0023] According to the solid waste combustion treatment system provided by the utility model, it also includes a tertiary air duct, the tertiary air duct includes a main pipe, a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are both connected to the main pipe, the first branch pipe is connected to the decomposition furnace, and the second branch pipe is connected to the air inlet;

[0024] The pre-combustion furnace provided by the utility model is provided with a suspended dispersion platform in the furnace. When the material enters the furnace through the feed port, the smaller material enters the decomposition furnace under the entrainment of the tertiary air introduced from the air inlet, and the larger material falls downward. The multiple suspended dispersion columns arranged along the first direction in the suspended dispersion platform can first scatter the material, and can also make part of the material stay on the suspended dispersion platform, thereby increasing the combustion surface area of ​​the combustible solid waste. At the same time, the first blowing port arranged on one side of the suspended dispersion column can blow the unburned solid waste staying on the suspended dispersion platform to expose the part of the material that is not fully burned. The pre-combustion furnace provided by the utility model is used to solve the problems in the prior art of using a pre-combustion furnace for pre-combustion of alternative fuels, such as low fuel dispersion, stagnant material layer, insufficient air selection and low mixing degree, thus insufficient combustion, low combustion rate, large equipment size, high investment, etc., thereby improving the combustion completeness of the combustible solid waste and effectively reducing the equipment size.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the internal structure of the pre-combustion furnace provided in an embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of an inclined platform in a pre-combustion furnace provided in an embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of a suspended dispersion platform in a pre-combustion furnace provided in an embodiment of the utility model;

[0030] Figure 4 It is a schematic diagram of a solid waste combustion treatment system provided in an embodiment of the utility model.

[0031] Reference numerals:

[0032] 100, pre-combustion furnace; 110, furnace body; 111, furnace chamber; 112, feed port; 113, air inlet; 120, suspended dispersion column; 121, first guide surface; 122, second guide surface; 130, first blowing port; 140, inclined platform; 141, upward dispersion platform; 1411, second blowing port; 1412, first guide surface; 1413, second guide surface; 142, blanking surface; 150, gas source; 200, decomposition furnace; 300, tertiary air duct; 310, main pipe; 320, first branch pipe; 330, second branch pipe; 340, first valve; 350, second valve; 400, rotary kiln; 500, smoke chamber. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0036] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0038] Combine the following Figures 1 to 4 The utility model describes a pre-combustion furnace and a solid waste combustion treatment system.

[0039] See also Figure 1 As shown, the pre-combustion furnace 100 provided by the utility model includes a furnace body 110, a suspended dispersion platform, a feed port 112 and an air inlet 113. Among them, a furnace 111 is provided in the furnace body 110; the suspended dispersion platform includes a plurality of suspended dispersion columns 120, and the plurality of suspended dispersion columns 120 are arranged in the furnace 111 at intervals along a first direction, and a first blowing port 130 is provided on one side of the suspended dispersion column 120; the feed port 112 is provided in the furnace body 110, and the feed port 112 is connected to the furnace 111; the air inlet 113 is provided in the furnace body 110, and the air inlet 113 is connected to the furnace 111; the feed port 112 is located above the suspended dispersion platform, and the air inlet 113 is provided on one side of the suspended dispersion platform.

[0040] The pre-combustion furnace 100 provided by the utility model is provided with a suspended dispersion platform in the furnace 111. When the material enters the furnace 111 through the feed port 112, the smaller material enters the decomposition furnace 200 under the entrainment of the tertiary air introduced from the air inlet 113, and the larger material falls downward. The multiple suspended dispersion columns 120 arranged along the first direction in the suspended dispersion platform can first break up the material, and can also make part of the material stay on the suspended dispersion columns 120, thereby increasing the combustion surface area of ​​the combustible solid waste. At the same time, the first blowing port 130 arranged on one side of the suspended dispersion column 120 can blow down the unburned solid waste staying on the suspended dispersion platform, thereby exposing the part of the material that is not fully burned. The precombustion furnace 100 provided by the utility model is used to solve the problems in the prior art of using the precombustion furnace 100 for precombustion of alternative fuels, such as low fuel dispersion, stagnant material layer, insufficient air separation and low mixing degree, resulting in incomplete combustion, low combustion rate, large equipment size and high investment. It improves the combustion completeness of combustible solid waste and can effectively reduce the size of equipment.

[0041] It should be noted that the above-mentioned “first direction” can be as follows: Figure 1 The spacing arrangement direction of the plurality of suspended dispersed columns 120 shown in the figure can be arranged along a straight line (i.e., the first direction can be a straight line) or a curved line. There is a certain height difference between adjacent suspended dispersed columns 120, and adjacent suspended dispersed columns 120 can be spaced apart in the lateral direction or partially overlap in the lateral direction.

[0042] Specifically, in this embodiment, the suspended dispersion platform includes 8 suspended dispersion columns 120, and the number of suspended dispersion columns 120 can be set according to the size of the furnace 111, and is usually 6 to 12. After the pre-combustion furnace 100 is used, the suspended dispersion columns 120 can be cooled by a cooling device, for example, by forced air cooling of the suspended dispersion columns 120 using an air cooling device.

[0043] A flange is provided at one end of the suspended dispersion column 120, through which the suspended dispersion column 120 is connected to the inner wall of the furnace 111. In order to reduce the weight of the suspended dispersion column 120, the present embodiment selects a suspended dispersion column 120 with a hollow structure.

[0044] A refractory protective layer is provided on the suspended dispersion column 120. By providing the refractory protective layer on the suspended dispersion column 120, the high temperature resistance and thermal shock resistance of the suspended dispersion column 120 can be improved, and its service life can be extended.

[0045] The first blowing port 130 is used to connect the blowing device to blow the material retained on the suspended dispersion column 120. The blowing device can be an air cannon, which is a device that uses compressed air or gas to generate high-pressure airflow to complete specific work. In specific implementation, the air cannon can periodically spray high-pressure airflow to the material on the suspended dispersion column 120 to make the material retained on the suspended dispersion column 120 fall off, and the burnt materials attached to the material fall off, so as to expose the incompletely burned parts inside the material, thereby improving the degree of complete combustion of the material.

[0046] See also Figure 1 and Figure 2 As shown, according to some embodiments of the utility model, an inclined platform 140 is provided at the bottom of the furnace 111, a plurality of upward dispersion platforms 141 are arranged in an array on the inclined platform 140, a second blowing port 1411 is provided on the upward dispersion platform 141, a first guide surface 1412 is provided on the upward dispersion platform 141, an angle between the first guide surface 1412 and the inclined platform 140 is greater than 90°, and the second blowing port 1411 is arranged facing the first guide surface 1412 of the adjacent upward dispersion platform 141. By setting an inclined platform 140 at the bottom of the furnace 111, the material dispersed by the suspended dispersing platform falls onto the inclined platform 140 and continues to burn. After each set time interval, the high-pressure airflow ejected from the second blowing port 1411 is blown on the material. The material slides upward and disperses under the action of the first guide surface 1412 inclined upward relative to the inclined platform 140. The fine and light materials produced by the combustion enter the airflow for a second dispersion and air selection. The relatively large material falls to the downstream of the inclined platform 140 and continues to burn. Under the dispersing action of the downstream upward dispersing platform 141, the burnt materials finally enter the decomposition furnace 200, which greatly increases the degree of combustion of the material.

[0047] In addition, the plurality of upward dispersing platforms 141 arranged in an array on the inclined platform 140 can form a material layer with uneven projections and depressions, thereby increasing the contact area between the material layer and the air.

[0048] Similarly, the second blowing port 1411 is also used to connect to the blowing equipment to blow the materials retained on the inclined flat and upward dispersing platform 141 .

[0049] See also Figure 2As shown, according to some embodiments of the utility model, a material drop surface 142 is provided between adjacent upward dispersing platforms 141, one side of the first guide surface 1412 is connected to the material drop surface 142, and the second blowing port 1411 is provided facing the material drop surface 142. By providing the material drop surface 142 between adjacent upward dispersing platforms 141, part of the material can be dropped onto the material drop surface 142 for combustion, and after the material is burned on the material drop surface 142 for a set time, the second blowing port 1411 provided facing the material drop surface 142 ejects a high-pressure airflow, so that the material retained on the material drop surface 142 slides upward and disperses under the action of the first guide surface 1412 provided obliquely upward relative to the inclined platform 140, further improving the degree of complete combustion of the material.

[0050] See also Figure 2 As shown, according to some embodiments of the present invention, second guide surfaces 1413 are provided on both sides of the first guide surface 1412, the angle between the second guide surface 1413 and the inclined platform 140 is greater than 90°, and one side of the second guide surface 1413 is connected to the blanking surface 142. By providing the second guide surfaces 1413 inclined upward relative to the inclined platform 140 on both sides of the first guide surface 1412, when the second blowing port 1411 ejects high-pressure airflow, the material retained on the blanking surface 142 can be dispersed forward and to the left and right sides under the joint action of the first guide surface 1412 and the second guide surface 1413, further improving the dispersion of the material.

[0051] See also Figure 1 As shown, according to some embodiments of the present invention, the pre-combustion furnace 100 further includes a gas source 150, and the first blowing port 130 and the second blowing port 1411 are connected to the gas source 150. By providing the gas source 150, it can be ensured that there is always sufficient gas supply in the pre-combustion furnace 100 to enable the first blowing port 130 and the second blowing port 1411 to achieve the blowing function, thereby ensuring the continuity and stability of the equipment operation.

[0052] Specifically, in this embodiment, the air source 150 is a compressed air storage tank, which stores a certain amount of compressed air. When the valve of the first blowing port 130 and / or the second blowing port 1411 is opened, the compressed air can form a high-pressure airflow to spray the material.

[0053] Of course, in order to adapt to specific working conditions, in some embodiments, only the first blowing port 130 or the second blowing port 1411 may be connected to the gas source 150 .

[0054] According to some embodiments of the present invention, a refractory protective layer is provided on the second blowing port 1411. By providing a refractory protective layer on the second blowing port 1411, the high temperature resistance and thermal shock resistance of the second blowing port 1411 can be improved, and the service life of the equipment can be extended.

[0055] See also Figure 3 As shown, according to some embodiments of the present invention, a first guide surface 121 is provided on the first side of the suspended dispersion column 120, and a second guide surface 122 is provided on the second side of the suspended dispersion column 120, and a guide channel is formed between the first guide surface 121 and the second guide surface 122 of the adjacent suspended dispersion column 120. By providing a guide channel between adjacent suspended dispersion columns 120, the tertiary wind can be guided, so that the tertiary wind can flow stably in the furnace 111 according to the set direction. And the thrust and entrainment power generated by the tertiary wind when flowing through the guide channel can be used for solid sorting, so that fine materials follow the tertiary wind into the decomposition furnace 200, and larger materials fall to the inclined platform 140.

[0056] The following is a specific example of the working principle of the pre-combustion furnace 100 provided by the utility model. Figures 1 to 3 .

[0057] When the equipment is started, tertiary air is passed into the furnace 111 through the air inlet 113, and materials are put into the furnace 111 through the feed port 112. Small and light materials enter the decomposition furnace 200 for combustion under the carrying effect of the tertiary air, and large-volume and high-density materials fall downward. Multiple suspended dispersion columns 120 can have a certain dispersion effect on large-volume and high-density materials, and make some materials remain on the suspended dispersion columns 120 for combustion, and some materials fall onto the inclined platform 140 for combustion.

[0058] During the combustion process, the first blowing port 130 sprays high-pressure airflow to the materials retained on the suspended dispersion column 120 after a set period of time, so that part of the materials retained on the suspended dispersion column 120 fall off, and the burnt materials on the surface of the materials fall off. The second blowing port 1411 sprays high-pressure airflow to the materials on the inclined platform 140 after a set period of time. Under the action of the first guide surface 1412 and the second guide surface 1413 provided on the upward dispersion platform 141, the materials generally disperse and move toward the downstream of the inclined platform 140, and move forward and upward and to the left and right sides. The fine materials formed after combustion enter the tertiary airflow for a second dispersion and air selection. The larger materials fall to the downstream of the inclined platform 140 and continue to burn. Under the dispersion action of the downstream upward dispersion platform 141, the burnt materials finally follow the tertiary airflow into the decomposition furnace 200, which greatly increases the degree of complete combustion of the materials.

[0059] In addition, the guide channel arranged between adjacent suspended dispersion columns 120 can guide the tertiary air, so that the tertiary air can flow stably in the furnace 111 according to the set direction, and the tertiary air can generate thrust and entrainment force when flowing through the guide channel to perform solid sorting, so that fine materials follow the tertiary air into the decomposition furnace 200, and larger materials fall to the inclined platform 140.

[0060] See also Figure 4 As shown, the solid waste combustion treatment system provided by the utility model includes a decomposition furnace 200 and a pre-combustion furnace 100 as described in any of the above embodiments, and the discharge port of the pre-combustion furnace 100 is connected to the decomposition furnace 200.

[0061] The solid waste combustion treatment system provided by the utility model has the above-mentioned pre-combustion furnace 100, so it also has the technical effect of improving the degree of material combustion, and can reduce the occupied space at the location of the pre-combustion furnace 100.

[0062] See also Figure 4 As shown, specifically, in this embodiment, the solid waste combustion treatment system further includes a rotary kiln 400 and a smoke chamber 500 , the decomposition furnace 200 is connected to the smoke chamber 500 , and the smoke chamber 500 is connected to the rotary kiln 400 .

[0063] See also Figure 4 As shown, according to some embodiments of the utility model, the solid waste combustion treatment system further includes a tertiary air duct 300, which includes a main pipe 310, a first branch pipe 320 and a second branch pipe 330. The first branch pipe 320 and the second branch pipe 330 are both connected to the main pipe 310, the first branch pipe 320 is connected to the decomposition furnace 200, and the second branch pipe 330 is connected to the air inlet 113; a first valve 340 is provided on the first branch pipe 320, and a second valve 350 is provided on the second branch pipe 330. By the above arrangement, the flow direction of the tertiary air can be controlled by the first valve 340 and the second valve 350. For example, when the first valve 340 is opened and the second valve 350 is closed, the tertiary air directly enters the decomposition furnace 200 through the first branch pipe 320; when the first valve 340 is closed and the second valve 350 is opened, the tertiary air enters the pre-combustion furnace 100 through the second branch pipe 330.

[0064] Specifically, the first valve 340 and the second valve 350 are both gates. The valves can be used to control the flow of fluid (gas, powder, etc.) and have the characteristics of simple structure and good sealing.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pre-combustion furnace, characterized in that: include: A furnace body, wherein a furnace chamber is provided in the furnace body; A suspended dispersion platform, the suspended dispersion platform comprising a plurality of suspended dispersion columns, the plurality of suspended dispersion columns being arranged in the furnace at intervals along a first direction, and a first blowing port being provided on one side of the suspended dispersion column; A feed inlet, the feed inlet being arranged on the furnace body and being in communication with the furnace; An air inlet, the air inlet being arranged on the furnace body and being in communication with the furnace; The feed inlet is located above the suspended dispersing platform, and the air inlet is arranged on one side of the suspended dispersing platform.

2. The pre-combustion furnace according to claim 1, characterized in that: An inclined platform is provided at the bottom of the furnace, a plurality of upward dispersing platforms are arranged in an array on the inclined platform, a second blowing port is provided on the upward dispersing platform, a first guide surface is provided on the upward dispersing platform, an angle between the first guide surface and the inclined platform is greater than 90°, and the second blowing port is arranged facing the first guide surface adjacent to the upward dispersing platform.

3. The pre-combustion furnace according to claim 2, characterized in that: A material dropping surface is provided between adjacent upward dispersing platforms, one side of the first guide surface is connected to the material dropping surface, and the second blowing port is arranged facing the material dropping surface.

4. The pre-combustion furnace according to claim 3, characterized in that: Second guide surfaces are provided on both sides of the first guide surface, the angle between the second guide surface and the inclined platform is greater than 90°, and one side of the second guide surface is connected to the blanking surface.

5. The pre-combustion furnace according to claim 2, characterized in that: It also includes an air source, and the first blowing port and / or the second blowing port are connected to the air source.

6. The pre-combustion furnace according to claim 2, characterized in that: A refractory material protective layer is provided on the second blowing port.

7. The pre-combustion furnace according to any one of claims 1 to 6, characterized in that: A first guide surface is provided on the first side of the suspended dispersion column, and a second guide surface is provided on the second side of the suspended dispersion column. A guide channel is formed between the first guide surface and the second guide surface of the adjacent suspended dispersion column.

8. The pre-combustion furnace according to any one of claims 1 to 6, characterized in that: A refractory material protective layer is provided on the suspended dispersion column.

9. A solid waste combustion treatment system, characterized in that: include: Calciner; The precombustion furnace according to any one of claims 1 to 8, wherein the discharge port of the precombustion furnace is connected to the decomposition furnace.

10. The solid waste combustion treatment system according to claim 9, characterized in that: It also includes a tertiary air duct, the tertiary air duct includes a main pipe, a first branch pipe and a second branch pipe, the first branch pipe and the second branch pipe are both connected to the main pipe, the first branch pipe is connected to the decomposition furnace, and the second branch pipe is connected to the air inlet; The first branch pipe is provided with a first valve, and the second branch pipe is provided with a second valve.

Images