Grate air distribution mechanism

Abstract

The application discloses a kind of stove row air distribution mechanism, including air distribution chamber, the stove tower located in air distribution chamber directly above and the outer sleeve tube, inner sleeve tube and intermediate sleeve tube between stove tower and air distribution chamber.It contains three layers and three layers above tower layer in stove tower;Outer sleeve tube is connected with the bottom of the bottom layer tower layer, and intermediate sleeve tube is connected with a layer of tower layer above outer sleeve tube;Inner sleeve tube is connected with a layer of tower layer above intermediate sleeve tube;Air distribution chamber has liquid containing cavity and downwardly into the liquid containing cavity containing liquid into outer air distribution pipe, intermediate air distribution pipe and inner air distribution pipe, outer air distribution pipe, intermediate air distribution pipe and inner air distribution pipe are placed in the bottom cavity wall of liquid containing cavity, outer air distribution pipe is also placed in the gap between outer sleeve tube and intermediate sleeve tube, intermediate air distribution pipe is placed in the gap between intermediate sleeve tube and inner sleeve tube, and inner air distribution pipe is placed in inner sleeve tube;To solve the problem of not being able to adjust air volume and low gasification efficiency independently;In addition, it can also ensure uniform cooling of stove tower and reduce the temperature of slag discharge.

Description

Technical Field

[0001] This invention relates to the field of hazardous waste treatment, and more particularly to a grate air distribution mechanism in a gasifier. Background Technology

[0002] As is well known, plasma gasification furnaces are commonly used equipment for the harmless treatment of solid waste, especially hazardous solid waste. They can achieve the effect of low emissions and less landfill, and are increasingly favored by hazardous waste treatment companies.

[0003] In plasma gasifiers, the grate air distribution is done in a single stage, which often results in a certain layer having an excessively large or small air volume. This leads to uneven furnace distribution and causes defects such as low gasification efficiency, uneven grate cooling, and high slag discharge temperature.

[0004] Therefore, there is an urgent need for a grate air distribution mechanism to overcome one or more of the above-mentioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a grate air distribution mechanism to solve the problems of inability to adjust the air volume independently and low gasification efficiency. In addition, it can also ensure uniform cooling of the furnace tower and reduce the slag discharge temperature.

[0006] To achieve the above objectives, the grate air distribution mechanism of the present invention includes an air distribution chamber, a furnace tower located directly above the air distribution chamber, and an outer sleeve, an inner sleeve, and an intermediate sleeve located between the furnace tower and the air distribution chamber. The furnace tower comprises three or more tower layers arranged in a gradually decreasing order from bottom to top. Each tower layer has a bottom opening at the center of its bottom and an air outlet on its side. The outer sleeve is fitted to the bottom of the lowest tower layer, so that the internal space of the outer sleeve is connected to the internal space of the tower layer in which it is located. The intermediate sleeve is spaced within the outer sleeve and extends upward beyond the outer sleeve, fitting into the tower layer above the outer sleeve. The inner sleeve is spaced within the intermediate sleeve and extends upward beyond the intermediate sleeve, fitting into the tower layer above the intermediate sleeve. The system is assembled and connected in layers; the air distribution chamber has a liquid holding cavity, an outer air distribution duct, an intermediate air distribution duct, and an inner air distribution duct. The outer sleeve, intermediate sleeve, and inner sleeve each extend downward into the liquid held in the liquid holding cavity. The outer air distribution duct, intermediate air distribution duct, and inner air distribution duct are sealed together and fixedly inserted into the bottom wall of the liquid holding cavity. The outer air distribution duct also extends upward beyond the liquid held in the liquid holding cavity and is placed in the gap between the outer sleeve and the intermediate sleeve. The intermediate air distribution duct also extends upward beyond the liquid held in the liquid holding cavity and is placed in the gap between the intermediate sleeve and the inner sleeve. The inner air distribution duct also extends upward beyond the liquid held in the liquid holding cavity and is placed in the inner sleeve.

[0007] Compared with existing technologies, this method utilizes the cooperation of an outer sleeve, inner sleeve, intermediate sleeve, liquid storage chamber, external air distribution duct, intermediate air distribution duct, and internal air distribution duct. The liquid in the liquid storage chamber creates a liquid seal at the lower ends of the outer sleeve, inner sleeve, and intermediate sleeve. This ensures that gas introduced through the external air distribution duct enters the gap between the outer sleeve and the intermediate sleeve to control the airflow in other tower layers below the intermediate sleeve. Gas introduced through the intermediate air distribution duct enters the gap between the intermediate sleeve and the inner sleeve to control the airflow in the tower layer containing the intermediate sleeve, or to control the airflow in the tower layer containing the intermediate sleeve and the tower layers between the intermediate sleeve and the inner sleeve. Gas introduced through the internal air distribution duct enters the inner sleeve to control the airflow in the tower layer containing the inner sleeve, or to control the airflow in the tower layer containing the inner sleeve. The design incorporates three or more layers of towers arranged in a gradually decreasing order from bottom to top, facilitating the downward flow of solid waste and gasified slag, and increasing the contact area between the tower and the solid waste, thus improving gasification treatment. Furthermore, the liquid seal within the liquid container chamber further enhances the cooling effect of the tower by sealing the lower ends of the outer, inner, and intermediate sleeves.

[0008] Preferably, the outer sleeve, the intermediate sleeve, and the inner sleeve each extend in a straight line along the vertical direction of the furnace tower, and the center lines of the outer sleeve, the intermediate sleeve, and the inner sleeve coincide.

[0009] Preferably, at least one of the outer sleeve, intermediate sleeve and inner sleeve has a radially outward protruding support ring at its upper end, and the support ring is stacked and fixed together with the bottom of the corresponding tower layer.

[0010] Preferably, the supporting ring platform is located directly above the bottom of the corresponding tower layer, the outer sleeve extends upward into the bottom opening of the tower layer where the outer sleeve is located, the middle sleeve extends upward into the bottom opening of the tower layer where the middle sleeve is located, and the inner sleeve extends upward into the bottom opening of the tower layer where the inner sleeve is located.

[0011] Preferably, the bottom opening size of the tower layer where the outer sleeve is located, the bottom opening size of the tower layer where the middle sleeve is located, and the bottom opening size of the tower layer where the inner sleeve is located are arranged to gradually decrease from bottom to top along the furnace tower. The bottom opening is a circular through-hole, and the outer contour of each tower layer is circular. Except for the top layer, the air outlets of the remaining tower layers extend downwards in a direction away from the center line of the furnace tower.

[0012] Preferably, the grate air distribution mechanism of the present invention further includes a water tank located outside the air distribution room and connected to the liquid holding chamber. The water tank is provided with a float valve for controlling the liquid level of the liquid held in the liquid holding chamber. When the float valve is lifted to a preset position by the liquid in the water tank, it disconnects the external liquid from continuing to enter the water tank.

[0013] Preferably, the inner sleeve is assembled and connected to the bottom of the top or second-top tower layer, the tower layer where the outer sleeve is located is separated from the tower layer where the middle sleeve is located by one tower layer, and the tower layer where the middle sleeve is located is separated from the tower layer where the inner sleeve is located by one tower layer.

[0014] Preferably, the intermediate sleeve sequentially comprises a first intermediate sleeve and a second intermediate sleeve arranged separately along the direction from the inner sleeve to the outer sleeve. The first intermediate sleeve extends upward from the second intermediate sleeve and is assembled and connected to the bottom of a layer of the tower located above the second intermediate sleeve. The second intermediate sleeve extends upward from the outer sleeve and is assembled and connected to the bottom of a layer of the tower located above the outer sleeve. The layer of the tower where the outer sleeve is located is separated from the layer where the second intermediate sleeve is located by one layer of the tower. The layer where the first intermediate sleeve is located is separated from the layer where the inner sleeve is located by one layer of the tower. There is a tower layer between the layers, and there is a tower layer between the tower layer where the first intermediate sleeve is located and the tower layer where the second intermediate sleeve is located. The intermediate air distribution pipe includes a first intermediate air distribution pipe and a second intermediate air distribution pipe arranged separately along the direction from the inner sleeve to the outer sleeve. The first intermediate air distribution pipe extends upward out of the liquid contained in the liquid holding cavity and is placed in the gap between the first intermediate sleeve and the inner sleeve. The second intermediate air distribution pipe extends upward out of the liquid contained in the liquid holding cavity and is placed in the gap between the second intermediate sleeve and the first intermediate sleeve.

[0015] Preferably, the intermediate air distribution ducts are multiple and arranged in one or more circles around the inner air distribution duct, and the outer air distribution ducts are multiple and arranged in one circle around the inner air distribution duct, with the intermediate air distribution duct located between the outer air distribution ducts and the inner air distribution ducts.

[0016] Preferably, the air distribution chamber further comprises an inner air inlet channel, a middle air inlet channel, and an outer air inlet channel that are separated from each other and not interconnected. The inner air inlet channel is connected to the inner air distribution duct, the middle air inlet channel is connected to the middle air distribution duct, and the outer air inlet channel is connected to the outer air distribution duct. The air distribution chamber is also provided with an outer air inlet connector, a middle air inlet connector, and an inner air inlet connector. Each of the outer air inlet connector, the middle air inlet connector, and the inner air inlet connector protrudes from the air distribution chamber. The air distribution chamber is also provided with a manual dust removal window, and each of the inner air inlet channel, the middle air inlet channel, and the outer air inlet channel is correspondingly connected to the manual dust removal window. Attached Figure Description

[0017] Figure 1 This is a plan view of the grate air distribution mechanism of the present invention.

[0018] Figure 2 This is a perspective view of the air distribution chamber in the grate air distribution mechanism of the present invention.

[0019] Figure 3 yes Figure 2 The diagram shows the interior of the air distribution chamber.

[0020] Figure 4 yes Figure 1 The diagram shows a plan view of the furnace tower, outer sleeve, inner sleeve, and intermediate sleeve assembled together in the grate air distribution mechanism.

[0021] Figure 5 yes Figure 4 A plan view of the assembled outer sleeve, inner sleeve, and intermediate sleeve.

[0022] Figure 6 yes Figure 4 A plan view of the furnace tower.

[0023] Figure 7 yes Figure 1 The diagram shown illustrates the gas flow direction within the grate air distribution mechanism, including the inner air inlet channel, inner air distribution duct, inner sleeve, and the first and second tower layers.

[0024] Figure 8 yes Figure 1 The diagram shown illustrates the gas flow direction within the external air inlet channel, external air distribution duct, outer casing, and the seventh and eighth tower layers of the grate air distribution mechanism.

[0025] Figure 9 yes Figure 1 The diagram shown illustrates the gas flow direction within an intermediate air inlet channel, a first intermediate air distribution pipe, a first intermediate sleeve, and the third and fourth tower layers of the grate air distribution mechanism.

[0026] Figure 10 yes Figure 1The diagram shown illustrates the gas flow pattern within another intermediate air inlet channel, the second intermediate air distribution pipe, the second intermediate sleeve, and the fifth and sixth tower layers of the grate air distribution mechanism. Detailed Implementation

[0027] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0028] Please see Figures 1 to 6 The grate air distribution mechanism 100 of the present invention includes an air distribution chamber 10, a furnace tower 20 located directly above the air distribution chamber 10, and an outer sleeve 30, an inner sleeve 40, and an intermediate sleeve 50 located between the furnace tower 20 and the air distribution chamber 10. The furnace tower 20 includes eight tower layers 21 arranged in a gradually decreasing direction from bottom to top along the furnace tower 10, so that the entire furnace tower 20 is arranged in a conical shape, for example, but not limited to... Figure 1 or Figure 6 The conical shape shown allows for better downward flow of solid waste and slag. Each tower layer 21 has a bottom opening 211 at its center. Optionally, as an example, the bottom opening 211 can be circular to facilitate manufacturing the bottom 21a of the tower layer 21. However, the shape of the bottom opening 211 can be other shapes depending on actual needs, and is not limited to this. Each tower layer 21 has an air outlet 212 on its side. Optionally, it can be located at... Figure 6 As an example, the air outlets 212 of the second to eighth tower layers 21 extend downwards in a direction away from the center line 22 of the furnace tower 20. This design can effectively prevent solid waste and slag from accidentally entering the furnace tower 20.

[0029] Meanwhile, the outer sleeve 30 is assembled and connected to the bottom 21a of the eighth tower layer 21 so that the internal space 31 of the outer sleeve 30 is connected to the internal space 21b of the tower layer 21 where the outer sleeve 30 is located; the intermediate sleeve 50 is spaced out and fitted in the outer sleeve 30, and the intermediate sleeve 50 also extends upward from the outer sleeve 30 and is assembled and connected to the tower layer 21 located above the outer sleeve 30, for example, it is assembled and connected to the fourth and sixth tower layers 21; the inner sleeve 40 is spaced out and fitted in the intermediate sleeve 50, and the inner sleeve 40 also extends upward from the intermediate sleeve 50 and is assembled and connected to the second tower layer 21 located above the intermediate sleeve 50.

[0030] Furthermore, the air distribution chamber 10 has a liquid holding cavity 11, an outer air distribution duct 12, an intermediate air distribution duct 13, and an inner air distribution duct 14. The outer sleeve 30, intermediate sleeve 50, and inner sleeve 40 each extend downwards into the liquid 15 contained in the liquid holding cavity 11. The outer air distribution duct 12, intermediate air distribution duct 13, and inner air distribution duct 14 are each sealed and fixedly inserted into the bottom cavity wall 111 of the liquid holding cavity 11. That is, the outer air distribution duct 12 is inserted into the bottom cavity wall 111 of the liquid holding cavity 11, and the outer air distribution duct 12 is also fixed to the bottom cavity wall 111, and the fit between the outer air distribution duct 12 and the bottom cavity wall 111 is sealed. The intermediate air distribution duct 13 is inserted into the bottom cavity wall 111 of the liquid holding cavity 11, and the intermediate air distribution duct 13 is also fixed to the bottom cavity wall 111, and the fit between the intermediate air distribution duct 13 and the bottom cavity wall 111 is sealed. The joint is also sealed; the inner air duct 14 passes through the bottom cavity wall 111 of the liquid holding cavity 11, and the inner air duct 14 is also fixed to the bottom cavity wall 111, and the joint between the inner air duct 14 and the bottom cavity wall 111 is also sealed; in addition, the outer air duct 12 extends upward out of the liquid 15 contained in the liquid holding cavity 11 and is placed in the gap 61 between the outer sleeve 30 and the intermediate sleeve 50, the intermediate air duct 13 extends upward out of the liquid 15 contained in the liquid holding cavity 11 and is placed in the gap 62 between the intermediate sleeve 50 and the inner sleeve 40, and the inner air duct 14 extends upward out of the liquid 15 contained in the liquid holding cavity 11 and is placed in the inner sleeve 40, as shown in the figure. Figure 1 As shown.

[0031] Therefore, when gas is introduced into the external air distribution duct 12, the gas enters the gap 61 and is then discharged from the air outlet 211 of the seventh and second tower layers 21, as shown in the figure. Figure 8 As shown; when gas is introduced into the internal air distribution duct 14, the gas enters the inner sleeve 40 and is then discharged from the air outlet 211 of the first and second tower layers 21, as shown in the diagram. Figure 7 As shown; when gas is introduced into the intermediate air distribution duct 13 (specifically the first intermediate air distribution duct 131), the gas enters the gap 62 and is then discharged from the air outlet 211 of the third and fourth tower layers 21, as shown in the diagram. Figure 9 As shown; additionally, when gas is introduced into the intermediate air distribution duct 13 (specifically the second intermediate air distribution duct 132), the gas enters the gap 64 and is then discharged from the air outlet 211 of the fifth and sixth tower layers 21, as shown in the diagram. Figure 10As shown. It should be noted that since there are eight tower layers 21, when one outer sleeve 30 and one inner sleeve 40 are each configured, in order to meet the requirement that one sleeve corresponds to two tower layers 21, the intermediate sleeve 50 is designed to include a first intermediate sleeve 50a and a second intermediate sleeve 50b. This allows each sleeve to control the air distribution of two tower layers 21, meaning the number of tower layers 21 is twice the number of sleeves. This reduces the number of sleeves used and also allows the bottom opening 211 of the tower layer 21 where the sleeve is located to be smaller than the opening without a sleeve below. The bottom opening 211 of the sleeved tower layer 21 is small; of course, depending on actual needs, the number of tower layers 21 can be arranged in the same way as the number of sleeves to meet the requirement that one sleeve controls one tower layer 21; therefore, the intermediate sleeve 50 is designed to include the first to the Nth intermediate sleeves according to the number of tower layers 21, so as to meet the requirement that the number of tower layers 21 is equal to or a multiple of the number of sleeves. Here, the sleeves are the sum of the outer sleeve 30, the intermediate sleeve 50, and the inner sleeve 40. More specifically, as follows:

[0032] like Figure 1 As shown, the grate air distribution mechanism 100 of the present invention also includes a water tank 70 located outside the air distribution chamber 10 and connected to the liquid holding chamber 11. The water tank 70 is equipped with a float valve 71 for controlling the liquid level of the liquid 15 held in the liquid holding chamber 11. When the float valve 71 is lifted to a preset position by the liquid 15 in the water tank 70, it cuts off the flow of external liquid into the water tank 70, ensuring that the liquid level in the air distribution chamber 10 meets the desired level, such as 1 meter, thus allowing the air distribution pressure to reach 10000 Pa. Of course, depending on actual needs, the desired water level can also be designed to be 0.8 meters, 1.2 meters, or 1.5 meters, etc., which can be flexibly selected according to actual needs. Furthermore, with the help of the float valve 71, liquid can be automatically replenished when the liquid level in the liquid holding chamber 11 of the air distribution chamber 10 drops, ensuring the dynamic balance of the liquid 15 in the liquid holding chamber 11 of the air distribution chamber 10.

[0033] like Figure 1 , Figure 4 and Figure 5As shown, the outer sleeve 30, intermediate sleeve 50, and inner sleeve 40 extend in a straight line along the vertical direction of the furnace tower 20, making them all straight pipe structures. The center lines of the outer sleeve 30, intermediate sleeve 50, and inner sleeve 40 (as indicated by reference numeral 63) coincide. This design allows for a more compact gap 61 between the outer sleeve 30 and intermediate sleeve 50, and a more compact gap 62 between the intermediate sleeve 50 and inner sleeve 40. Furthermore, it reduces the distance between the outer sleeve 30, intermediate sleeve 50, and inner sleeve 40 in the furnace tower 20. When the outer sleeve 30, intermediate sleeve 50 and inner sleeve 40 rotate together around the center line indicated by reference numeral 63, the space occupied is reduced, thus reducing the volume of the gasifier cavity. This is because the furnace tower 20, outer sleeve 30, intermediate sleeve 50 and inner sleeve 40 are arranged in the gasifier cavity, which is located directly above the air distribution chamber 10. The lower end of the gasifier cavity is assembled and connected to the upper end 10a of the air distribution chamber 10, for example, but not limited to, using fasteners to assemble them together.

[0034] like Figure 4 and Figure 5 As shown, the upper end of the outer sleeve 30 is provided with a radially outward protruding support ring platform 32. The support ring platform 32 and the bottom 21a of the tower layer 21 where the outer sleeve 30 is located are stacked and fixed together. Optionally, in Figure 4 In this example, the support ring platform 32 is located directly above the bottom 21a of the tower layer 21 where the outer sleeve 30 is located. This design prevents gas entering through the gap 61 between the outer sleeve 30 and the intermediate sleeve 50 from leaking out from the mating point between the bottom 21a of the tower layer 21 where the outer sleeve 30 is located and the support ring platform 32. In contrast, the support ring platform 32, being located directly below the bottom 21a of the tower layer 21 where the outer sleeve 30 is located, has the drawback of "gas entering through the gap 61 between the outer sleeve 30 and the intermediate sleeve 50 leaking out from the mating point between the bottom 21a of the tower layer 21 where the outer sleeve 30 is located and the support ring platform 32". It also avoids the structural complexity and increased cost caused by adding a sealing gasket to prevent gas leakage. In addition, the support ring platform 32 can reduce the diameter of the remaining part of the outer sleeve 30 excluding the support ring platform 32. It should be noted that when the supporting ring platform 32 is located directly above the bottom 21a of the tower layer 21 where the outer sleeve 30 is located, the outer sleeve 30 passes upward into the bottom opening 211 of the tower layer 21 where the outer sleeve 30 is located.

[0035] like Figure 4 and Figure 5 As shown, the upper end of the intermediate sleeve 50 is provided with a radially outward protruding support ring 51. The support ring 51 and the bottom 21a of the tower layer 21 where the intermediate sleeve 50 is located are stacked and fixed together. Optionally, in Figure 4In this example, the support ring platform 51 is located directly above the bottom 21a of the tower layer 21 where the intermediate sleeve 50 is located. This design prevents gas entering through the gap 62 between the intermediate sleeve 50 and the inner sleeve 40 from leaking out from the mating point between the bottom 21a of the tower layer 21 where the intermediate sleeve 50 is located and the support ring platform 51. In contrast, when the support ring platform 51 is located directly below the bottom 21a of the tower layer 21 where the intermediate sleeve 50 is located, there is a drawback that "gas entering through the gap 62 between the intermediate sleeve 50 and the inner sleeve 40 will leak out from the mating point between the bottom 21a of the tower layer 21 where the intermediate sleeve 50 is located and the support ring platform 51". In addition, the addition of a sealing gasket to prevent gas leakage leads to structural complexity and increased cost. Furthermore, the support ring platform 51 can also reduce the diameter of the remaining part of the intermediate sleeve 50 excluding the support ring platform 51. It should be noted that when the supporting ring platform 51 is located directly above the bottom 21a of the tower layer 21 where the intermediate sleeve 50 is located, the intermediate sleeve 50 extends upward into the bottom opening 211 of the tower layer 21 where the intermediate sleeve 50 is located.

[0036] Wherein, when the intermediate sleeve 50 sequentially includes a first intermediate sleeve 50a and a second intermediate sleeve 50b arranged separately along the direction from the inner sleeve 40 to the outer sleeve 30, the first intermediate sleeve 50a extends upward beyond the second intermediate sleeve 50b and is assembled and connected to the bottom 21a of the first layer 21 above the second intermediate sleeve 50b, that is, it is assembled and connected to the bottom 21a of the fourth layer 21; the second intermediate sleeve 50b extends upward beyond the outer sleeve 30 and is assembled and connected to the bottom 21a of the fourth layer 21 above the outer sleeve 30. The bottom 21a of the first layer 20 is assembled and connected, that is, it is assembled and connected to the bottom 21a of the sixth layer 21. This results in a layer 21 separating the layer 21 containing the outer sleeve 30 from the layer 21 containing the second intermediate sleeve 50b, a layer 21 separating the layer 21 containing the first intermediate sleeve 50a from the layer 21 containing the inner sleeve 40, and a layer 21 separating the layer 21 containing the first intermediate sleeve 50a from the layer 21 containing the second intermediate sleeve 50b. See the attached diagram for the desired state. Figure 4As shown; the purpose of this design is to reduce the number of sleeves used. It is understood that when the intermediate sleeve 50 includes a first intermediate sleeve 50a and a second intermediate sleeve 50b, the upper ends of both the first intermediate sleeve 50a and the second intermediate sleeve 50b are each provided with the aforementioned support ring platform 51. The support ring platform 51 of the first intermediate sleeve 50a is assembled and connected to the bottom 21a of its tower layer 21, and the support ring platform 51 of the first intermediate sleeve 50a is located directly above the bottom 21a of the tower layer 21 where the first intermediate sleeve 50a is located. The first intermediate sleeve 50a is inserted upward into the bottom opening 211 of the tower layer 21 where the first intermediate sleeve 50a is located; the supporting ring platform 51 of the second intermediate sleeve 50b is assembled and connected to the bottom 21a of the tower layer 21 where it is located, and when the supporting ring platform 51 of the second intermediate sleeve 50b is located directly above the bottom 21a of the tower layer 21 where the second intermediate sleeve 50b is located, the second intermediate sleeve 50b is inserted upward into the bottom opening 211 of the tower layer 21 where the second intermediate sleeve 50b is located.

[0037] like Figure 4 and Figure 5 As shown, the upper end of the inner sleeve 40 is provided with a radially outward protruding support ring platform 41. The support ring platform 41 and the bottom 21a of the tower layer 21 where the inner sleeve 40 is located are stacked and fixed together. Optionally, in Figure 4 In this example, the support ring platform 41 is located directly above the bottom 21a of the tower layer 21 where the inner sleeve 40 is located. This design prevents gas entering through the inner sleeve 40 from leaking out from the joint between the bottom 21a of the tower layer 21 where the inner sleeve 40 is located and the support ring platform 42. In contrast, when the support ring platform 41 is located directly below the bottom 21a of the tower layer 21 where the inner sleeve 40 is located, there is a defect that "gas entering through the inner sleeve 40 will leak out from the joint between the bottom 21a of the tower layer 21 where the inner sleeve 40 is located and the support ring platform 42". In addition, the addition of a sealing gasket to prevent gas leakage leads to structural complexity and increased cost. Furthermore, the support ring platform 41 can also reduce the diameter of the remaining part of the inner sleeve 40 excluding the support ring platform 41. It should be noted that when the supporting ring platform 41 is located directly above the bottom 21a of the tower layer 21 where the inner sleeve 40 is located, the inner sleeve 40 extends upward into the bottom opening 211 of the tower layer 21 where the inner sleeve 40 is located.

[0038] like Figure 4 As shown, the dimensions of the bottom opening 211 of the tower layer 21 where the outer sleeve 30 is located, the bottom opening 211 of the tower layer 21 where the middle sleeve 50 is located, and the bottom opening 211 of the tower layer 21 where the inner sleeve 40 is located are arranged to gradually decrease from bottom to top along the furnace tower 20, so as to better meet the arrangement of the pipe diameters of the outer sleeve 30, the middle sleeve 50 and the inner sleeve 40 decreasing; in addition, the outer contour of each tower layer 20 is circular, so that the furnace tower 20 is a rotating body.

[0039] like Figures 1 to 3 As shown, the intermediate air distribution duct 13 sequentially includes a first intermediate air distribution duct 131 and a second intermediate air distribution duct 132 arranged separately along the direction from the inner sleeve 40 to the outer sleeve 30, to match the requirement that the intermediate sleeve 50 includes a first intermediate sleeve 50a and a second intermediate sleeve 50b; the first intermediate air distribution duct 131 extends upward through the liquid 15 contained in the liquid holding cavity 11 and is placed in the gap 62 between the first intermediate sleeve 50a and the inner sleeve 40, and the second intermediate air distribution duct 132 extends upward through the liquid 15 contained in the liquid holding cavity 11 and is placed in the gap 64 between the second intermediate sleeve 50b and the first intermediate sleeve 50a, as shown in the diagram. Figure 1 As shown; the first intermediate air distribution duct 131 is used to distribute air to the first intermediate sleeve 50a to control the airflow of the third and fourth tower layers 21, and the second intermediate air distribution duct 132 is used to distribute air to the second intermediate sleeve 50b to control the airflow of the fifth and sixth tower layers 21. Specifically, in Figure 2 In this example, multiple intermediate air distribution ducts 13 are arranged in two concentric circles around the inner air distribution duct 14, that is, the first intermediate air distribution duct 131 is arranged in one concentric circle around the inner air distribution duct 14, and the second intermediate air distribution duct 132 is arranged in one concentric circle around the inner air distribution duct 14; multiple outer air distribution ducts 12 are arranged in one concentric circle around the inner air distribution duct 14, and the intermediate air distribution ducts 13 are located between the outer air distribution ducts 12 and the inner air distribution ducts 14. The purpose of this design is to effectively and evenly supply air to each tower layer 21 of the furnace tower 20; in addition, the air distribution chamber 10 also has an inner air inlet channel 15, an intermediate air inlet channel 16, and an outer air inlet channel 17 that are separated from each other and do not communicate with each other. The air duct 15 is connected to the internal air distribution duct 14, the intermediate air inlet duct 16 is connected to the intermediate air distribution duct 13, and the external air inlet duct 17 is connected to the external air distribution duct 12. The air distribution chamber 10 is also equipped with an external air inlet connector 181, an intermediate air inlet connector 182, and an internal air inlet connector 183. The external air inlet connector 181, the intermediate air inlet connector 182, and the internal air inlet connector 183 each protrude from the air distribution chamber 10 to facilitate assembly and connection with the corresponding number of fans in the outside. In addition, the air distribution chamber 10 is also equipped with a manual dust removal window 184. The internal air inlet duct 15, the intermediate air inlet duct 16, and the external air inlet duct 17 are each connected to a manual dust removal window 184 to facilitate manual dust removal by the operator. It should be noted that when the intermediate air distribution duct 13 includes a first intermediate air distribution duct 131 and a second intermediate air distribution duct 132, since the first intermediate air distribution duct 131 and the second intermediate air distribution duct 132 need to have separate air intakes, the intermediate air intake channels 16 need to be set as two independent channels, one connected to the first intermediate air distribution duct 131 and the other connected to the second intermediate air distribution duct 132, as shown in the diagram. Figure 3 As shown.

[0040] Compared with existing technologies, by utilizing the cooperation of the outer sleeve 30, inner sleeve 40, intermediate sleeve 50, liquid holding chamber 11, external air distribution duct 12, intermediate air distribution duct 13, and inner air distribution duct 14, the liquid 15 in the liquid holding chamber 11 liquid-tightens the lower ends of the outer sleeve 30, inner sleeve 40, and intermediate sleeve 50, ensuring that the gas introduced through the external air distribution duct 12 enters the gap 61 between the outer sleeve 30 and the intermediate sleeve 50, which is used to control other tower layers 21 located below the tower layer 21 where the intermediate sleeve 50 is located (e.g., Figure 1 The airflow of the seventh and eighth tower layers 21; the gas introduced by the intermediate air distribution duct 13 enters the gap 62 between the intermediate sleeve 50 and the inner sleeve 40, used to control the airflow of the tower layer 21 where the intermediate sleeve 50 is located, or to control the airflow of the tower layer 21 where the intermediate sleeve 50 is located and the tower layer 21 located between the tower layer 21 where the intermediate sleeve 50 is located and the tower layer 21 where the inner sleeve 40 is located, for example Figure 1 The airflow of the third and fourth tower layers 21; the gas introduced into the internal air distribution duct 14 enters the inner sleeve 40 to control the airflow of the tower layer 21 where the inner sleeve 40 is located, or to control the airflow of the tower layer 21 where the inner sleeve 40 is located and the tower layer 22 above it, for example. Figure 1 The air volume of the first and second tower layers 21 in the furnace tower 20 can be individually adjusted and controlled to achieve multi-stage air distribution, ensuring that the air volume of each tower layer 21 in the furnace tower 20 is evenly distributed. This improves gasification efficiency and ensures uniform cooling of the furnace tower 20 and reduces the slag discharge temperature. In addition, the design of "the furnace tower 20 including three or more tower layers 21 arranged in a gradually decreasing direction from bottom to top" facilitates the downward flow of solid waste and gasified slag, and increases the contact area between the furnace tower 20 and solid waste, thus making gasification treatment more effective. The liquid 15 in the liquid container 11 liquid seals the lower ends of the outer sleeve 30, inner sleeve 40 and intermediate sleeve 50, so the outer sleeve 30, inner sleeve 40 and intermediate sleeve 50 can further cool the furnace tower 20.

[0041] It is worth noting that the first to eighth layers mentioned above are named from top to bottom along the furnace tower 20, that is, the topmost tower layer 21 is the first layer, and the bottommost tower layer 21 is the eighth layer. Furthermore, although the attached diagram shows that tower layer 21 has eight layers, and that the outer sleeve 30, intermediate sleeve 50, and inner sleeve 40 each have supporting ring platforms 32 (41, 51), of course, depending on actual needs, tower layer 21 can also be designed with three, four, or five layers, and the supporting ring platforms can be provided by one or both of the outer sleeve 30, intermediate sleeve 50, and inner sleeve 40, so it is not limited to what is shown in the attached diagram. In addition, the supporting ring platforms 32 (41, 51) are fixed to the bottom 21b of the corresponding tower layer 21 by fasteners 33 (42, 52), as shown in the attached diagram. Figure 4 As shown; finally, in other embodiments, the inner sleeve 40 can also be assembled and connected to the bottom 21a of the first layer tower 21.

[0042] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A grate air distribution mechanism, characterized in that, The system includes an air distribution chamber, a furnace tower located directly above the air distribution chamber, and an outer sleeve, an inner sleeve, and an intermediate sleeve located between the furnace tower and the air distribution chamber. The furnace tower comprises three or more tower layers arranged in a gradually decreasing order from bottom to top. Each tower layer has a bottom opening at the center of its bottom and an air outlet on its side. The outer sleeve is fitted into the bottom of the lowest tower layer, allowing the internal space of the outer sleeve to communicate with the internal space of the tower layer containing it. The intermediate sleeves are spaced apart within the outer sleeve and extend upwards beyond the outer sleeve, connecting with the tower layer above the outer sleeve. The inner sleeves are spaced apart within the intermediate sleeves and extend upwards beyond the outer sleeve. The intermediate sleeve is assembled and connected to the tower layer located above the intermediate sleeve; the air distribution chamber has a liquid holding cavity, an outer air distribution pipe, an intermediate air distribution pipe and an inner air distribution pipe. The outer sleeve, intermediate sleeve and inner sleeve each extend downward into the liquid held in the liquid holding cavity. The outer air distribution pipe, intermediate air distribution pipe and inner air distribution pipe are sealed and fixedly inserted into the bottom cavity wall of the liquid holding cavity. The outer air distribution pipe also extends upward into the liquid held in the liquid holding cavity and is placed in the gap between the outer sleeve and the intermediate sleeve. The intermediate air distribution pipe also extends upward into the liquid held in the liquid holding cavity and is placed in the gap between the intermediate sleeve and the inner sleeve. The inner air distribution pipe also extends upward into the liquid held in the liquid holding cavity and is placed in the inner sleeve.

2. The grate air distribution mechanism according to claim 1, characterized in that, The outer sleeve, intermediate sleeve, and inner sleeve each extend in a straight line along the vertical direction of the furnace tower, and the center lines of the outer sleeve, intermediate sleeve, and inner sleeve coincide.

3. The grate air distribution mechanism according to claim 1, characterized in that, At least one of the outer sleeve, intermediate sleeve and inner sleeve has a radially outward protruding support ring at its upper end, and the support ring is stacked and fixed together with the bottom of the corresponding tower layer.

4. The grate air distribution mechanism according to claim 3, characterized in that, The supporting ring platform is located directly above the bottom of the corresponding tower layer. The outer sleeve extends upward into the bottom opening of the tower layer where the outer sleeve is located. The middle sleeve extends upward into the bottom opening of the tower layer where the middle sleeve is located. The inner sleeve extends upward into the bottom opening of the tower layer where the inner sleeve is located.

5. The grate air distribution mechanism according to claim 1, characterized in that, The bottom opening size of the tower layer where the outer sleeve is located, the bottom opening size of the tower layer where the middle sleeve is located, and the bottom opening size of the tower layer where the inner sleeve is located are arranged to gradually decrease from bottom to top along the furnace tower. The bottom opening is a circular through-hole. The outer contour of each tower layer is circular. Except for the top layer, the air outlet of the remaining tower layers extends downwards in a direction away from the center line of the furnace tower.

6. The grate air distribution mechanism according to claim 1, characterized in that, It also includes a water tank located outside the air distribution room and connected to the liquid holding chamber. The water tank is equipped with a float valve for controlling the liquid level of the liquid held in the liquid holding chamber. When the float valve is lifted to a preset position by the liquid in the water tank, it disconnects the external liquid from continuing to enter the water tank.

7. The grate air distribution mechanism according to claim 1, characterized in that, The inner sleeve is assembled and connected to the bottom of the top or second-top tower layer. The tower layer where the outer sleeve is located is separated from the tower layer where the middle sleeve is located by one tower layer. The tower layer where the middle sleeve is located is separated from the tower layer where the inner sleeve is located by one tower layer.

8. The grate air distribution mechanism according to claim 7, characterized in that, The intermediate sleeve, along the direction from the inner sleeve to the outer sleeve, sequentially includes a first intermediate sleeve and a second intermediate sleeve arranged separately. The first intermediate sleeve extends upward from the second intermediate sleeve and is assembled and connected to the bottom of a layer of the tower located above the second intermediate sleeve. The second intermediate sleeve extends upward from the outer sleeve and is assembled and connected to the bottom of a layer of the tower located above the outer sleeve. The tower layer where the outer sleeve is located is separated from the tower layer where the second intermediate sleeve is located by one tower layer. The tower layer where the first intermediate sleeve is located is separated from the tower layer where the inner sleeve is located by one tower layer. The intermediate air distribution duct, along the direction from the inner sleeve to the outer sleeve, sequentially includes a first intermediate air distribution duct and a second intermediate air distribution duct arranged separately. The first intermediate air distribution duct extends upward from the liquid contained in the liquid holding cavity and is placed in the gap between the first intermediate sleeve and the inner sleeve. The second intermediate air distribution duct extends upward from the liquid contained in the liquid holding cavity and is placed in the gap between the second intermediate sleeve and the first intermediate sleeve.

9. The grate air distribution mechanism according to claim 1, characterized in that, The intermediate air distribution ducts are multiple and arranged in one or more circles around the inner air distribution duct, and the outer air distribution ducts are multiple and arranged in one circle around the inner air distribution duct, with the intermediate air distribution duct located between the outer air distribution ducts and the inner air distribution ducts.

10. The grate air distribution mechanism according to claim 1, characterized in that, The air distribution chamber also has an inner air inlet channel, a middle air inlet channel, and an outer air inlet channel that are separated from each other and not connected to each other. The inner air inlet channel is connected to the inner air distribution duct, the middle air inlet channel is connected to the middle air distribution duct, and the outer air inlet channel is connected to the outer air distribution duct. The air distribution chamber is also provided with an outer air inlet connector, a middle air inlet connector, and an inner air inlet connector. Each of the outer air inlet connector, the middle air inlet connector, and the inner air inlet connector protrudes from the air distribution chamber. The air distribution chamber is also provided with a manual dust removal window. Each of the inner air inlet channel, the middle air inlet channel, and the outer air inlet channel is connected to a corresponding manual dust removal window.

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