Gasification furnace grate and gasification furnace comprising same

Abstract

The gasification furnace grate comprises a fixed cavity and a rotating mechanism, the fixed cavity is used for receiving materials in a gasification furnace body, the bottom of the fixed cavity is provided with a mounting hole and a blanking port, the rotating mechanism and the fixed cavity are arranged in a split mode, and the rotating mechanism is arranged in the fixed cavity. The rotating mechanism is arranged at the bottom of the fixed cavity and partially extends into the fixed cavity through the mounting hole; the part, extending into the fixed cavity, of the rotating mechanism is provided with an ash scraping knife, and the rotating mechanism drives the ash scraping knife to rotate so as to stir materials to the discharging opening to be discharged; the rotating mechanism and the fixed chamber are arranged in a split manner, so that the fire grate is convenient to disassemble, and the fire grate is convenient to overhaul and maintain; in addition, due to the fact that the rotating mechanism is arranged in a split mode, the weight driven by the rotating mechanism is greatly reduced, and consumed energy is reduced.

Description

Technical Field

[0001] The present invention relates to the fields of low-carbon, environmental protection and energy technology, and in particular to a gasifier grate and a gasifier comprising the same. Background Art

[0002] With the rapid development and continuous progress of urbanization in my country, the output of organic solid waste has increased dramatically. If it is not properly handled and disposed of, it will seriously threaten people's living environment and health. Landfill and incineration are the traditional mainstream technologies for solid waste treatment and disposal, but with the improvement of environmental protection requirements and the development of new technologies, the limitations of these traditional technologies have become increasingly prominent. Landfill requires a large amount of land resources, which is prone to cause secondary pollution such as groundwater and air, and cannot achieve resource utilization of organic matter, which does not conform to my country's "three-in-one" treatment principle. Incineration is prone to produce pollutants such as dioxins and heavy metals, and requires a higher energy input to maintain the combustion process, which has limited effect on the treatment of organic solid waste with low calorific value. In addition, in small and medium-sized projects, incineration disposal is difficult to achieve effective power generation, and can only provide thermal energy utilization, and the system economy is not good.

[0003] The common gasifier grates in the prior art are as follows: CN 213951100U patent adopts a biomass gasifier ash discharge device, including a gasifier body, a base, a rotating mechanism, an ash basin and a heat-resistant grate. Ash falls from the top of the gasifier into the grate and accumulates in the ash trough. When discharging ash, water is first added to the ash trough to form a seal. The rotating mechanism drives the ash trough and the grate to rotate as a whole, and the ash is discharged through the ash scraper and ash guide plate installed on the wall of the gasifier body. Although this patent can realize the smooth ash discharge of the gasifier, adding water to the ash trough is a wet slag discharge that is not conducive to the downstream application of the ash, and the water in the ash trough is in direct contact with the gasifier furnace, which will greatly increase the heat loss in the gasifier. In addition, the rotating mechanism drives the entire ash removal device to perform overall transmission, which increases the kinetic energy consumption of operation. Since the various structures are connected as a whole, the difficulty of overhauling and maintaining the gasifier will also be greatly increased. The CN117070251A patent adopts a gasifier, in which a mechanical grate structure is arranged in the rotating section furnace body, including core components such as a material distribution cone, a scraper, a water seal mechanism, a rotating mechanism and an ash bin. The grate is continuously or periodically rotated to form a relative rotation with the static scraper arranged under the suspended furnace of the fixed section furnace body, and the gasified carbon center is discharged downward through the ash discharge port arranged at the bottom of the grate. Although the patent improves the stability of raw material accumulation on the grate and reduces the ash content in the outlet gas through the design of gas-solid countercurrent circulation, its ash removal process relies on the relative movement of the material and the static scraper to achieve passive ash removal. The ash removal channel has a long line and a small space, which greatly increases the risk of clogging the ash removal channel. The rotating mechanism drives the grate to rotate as a whole, which increases the kinetic energy consumption of the motor, and the direct contact between the water seal water and the internal space of the furnace also causes a large amount of heat loss in the gasifier. In addition, if the integral connection structure of the grate fails, it will not be possible to repair and maintain it in time. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art gasifier grate that the grate consumes a lot of energy and cannot be repaired and maintained in time, and to provide a gasifier grate and a gasifier containing the same.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A gasifier grate, comprising a fixed chamber and a rotating mechanism, wherein the fixed chamber is used to receive materials in a gasifier body, and the bottom of the fixed chamber is provided with a mounting hole and a material drop opening.

[0007] The rotating mechanism is arranged separately from the fixed chamber, and the rotating mechanism is at the bottom of the fixed chamber and partially extends into the fixed chamber through the mounting hole;

[0008] The part of the rotating mechanism extending into the fixed chamber is provided with a scraper, and the rotating mechanism drives the scraper to rotate so as to push the material to the material outlet for discharge.

[0009] In the present scheme, the rotating mechanism and the fixed chamber are arranged separately. The so-called separate arrangement means that the rotating mechanism and the fixed chamber are two independent structures, and there is no direct contact between the two. Such an arrangement facilitates the disassembly of the grate, and then facilitates the inspection and maintenance of the grate to extend its life; in addition, due to the separate arrangement of the rotating mechanism, the weight driven by the rotating mechanism is greatly reduced, and the local transmission method greatly reduces the mechanical power required for the rotation process to reduce the energy consumed; the setting of the mounting hole facilitates the rotating mechanism to enter the fixed chamber and act on the material in the fixed chamber; the setting of the scraper is conducive to scraping the material to the discharge port.

[0010] Preferably, the rotating mechanism also includes a base and a dividing cone, the dividing cone is installed at the upper end of the base, part of the dividing cone extends into the fixed chamber, and the scraper is installed at the part of the dividing cone extending into the fixed chamber; the base is located below the fixed chamber.

[0011] In the present scheme, the setting of the dividing cone is conducive to evenly transporting the material entering the fixed chamber to the interior of the fixed chamber to form a material accumulation layer of a certain height. At the same time, the top area of ​​the material accumulation layer will slide down through the surface of the dividing cone, thereby ensuring the continuity of the dust removal process; the scraper is installed on the part of the dividing cone extending into the fixed chamber to facilitate scraping the material transported by the dividing cone to the material drop port.

[0012] Preferably, the scraper is detachably mounted on the dividing cone;

[0013] And / or, the scraper comprises a first blade and a second blade, and an obtuse angle of 120 degrees to 135 degrees is formed between the first blade and the second blade.

[0014] In the present scheme, the scraper can be detachably mounted on the dividing cone. As the most easily damaged component of the grate, the detachable design ensures the convenience of maintenance or replacement of the scraper, indirectly extending the service life of the grate; in addition, an obtuse angle of 120 degrees to 135 degrees is formed between the first blade and the second blade. The above setting reduces the risk of damage by reducing the reaction force of the material during the material shifting process. Furthermore, the above-mentioned obtuse angle design of the scraper can effectively reduce the resistance impact during material shifting, and at the same time, the inner surface of the scraper is highly fitted with the side of the dividing cone.

[0015] Preferably, the outer side wall of the base is provided with a water seal groove, the fixed chamber comprises a water seal plate, the water seal plate extends downward from the bottom wall of the fixed chamber until it extends into the water seal groove, and the water seal groove is used to contain the liquid medium.

[0016] In this solution, the water seal plate is extended into the water seal groove to form a water seal system to prevent gas leakage from the gasifier.

[0017] Preferably, the base comprises a bearing plate, an outer side wall and a water seal wall, wherein the water seal wall is disposed around the bottom of the outer side wall and forms a water seal groove with the outer side wall;

[0018] The bearing plate is arranged at the top of the inner side wall of the outer side wall for installing the material distribution cone; an extension plate is arranged at the mounting hole of the fixed chamber, and the extension plate extends downward and is located between the outer side wall and the material distribution cone.

[0019] In this solution, the arrangement of the bearing plate, the outer side wall, the water sealing wall and the extension plate further improves the sealing performance of the water sealing system.

[0020] Preferably, an overflow port is provided at the top of the water seal groove, a drain pan is provided in the fixed chamber, and the drainage path of the overflow port faces the drain pan.

[0021] In this solution, the overflow port and the drain pan are arranged so that after the water level in the water seal groove reaches a certain height, it flows from the overflow port to the drain pan and is further discharged. Compared with the traditional upward suction gasifier, the contact area between the water seal water of this grate and the internal space of the gasifier is very small, thereby solving the problem that the larger contact area between the water seal water and the internal space of the gasifier causes more heat loss.

[0022] Preferably, the drain pan has a hanging structure, and the drain pan is hung at the bottom of the fixed chamber through the hanging structure;

[0023] And / or, the drain pan is detachably connected to the fixed chamber.

[0024] In this solution, the provision of the suspension mechanism facilitates the removal of the drain pan from the fixed chamber to facilitate the inspection and maintenance of the grate. In addition, the suspension mechanism can further improve the sealing performance of the above-mentioned water seal system.

[0025] Preferably, a bottom sealing plate is provided inside the material distribution cone, and the bottom sealing plate is used to seal the material distribution cone;

[0026] And / or, the gasifier grate comprises a driving mechanism and a supporting frame, the driving mechanism is arranged between the base and the supporting frame and is used to drive the rotating mechanism to rotate, and the supporting frame supports the rotating mechanism;

[0027] And / or, the rotating mechanism includes a water seal inlet pipe, which is arranged from the support frame toward the bearing plate and is arranged in a 360-degree coil at the position where the base is connected to the dividing cone.

[0028] In this solution, the bottom sealing plate is used to perform a hard seal on the material distribution cone to prevent leakage of materials; the water seal inlet pipe is used to supply water to the water seal groove. The arrangement of the above-mentioned water seal water pipe and the above-mentioned drain pan and other components not only realizes the function of water inlet and outlet of the water seal system pipeline, but also can water cool the base, and can also further reduce the heat loss of the gasifier, thereby ensuring efficient utilization of system energy.

[0029] Preferably, the fixed chamber comprises a metal layer, a heat-insulating layer and a casting layer, the metal layer is arranged at the outermost side, and the heat-insulating layer is arranged between the metal layer and the casting layer;

[0030] And / or, the fixed chamber further comprises an inspection opening, which horizontally extends through the metal layer, the insulation layer and the casting layer and is horizontally arranged toward the plaster scraper.

[0031] In the present solution, the metal layer is arranged on the outermost side, and its non-direct contact with the thermal environment inside the gasifier greatly reduces the heat loss of the gasifier, thereby ensuring the high energy utilization rate of the system; in addition, the insulation layer and the casting layer serve as the insulation structure of the gasifier, which can prevent the heat loss inside the gasifier from being lost and the isolation temperature from being conducted to the metal layer to cause the gasifier to overheat; the setting method of the inspection port is convenient for installing the scraper on the dividing cone, or removing the scraper from the dividing cone.

[0032] The present invention further provides a gasifier, which comprises the above-mentioned gasifier grate and a gasifier body, wherein the fixed chamber is arranged at the lower end of the gasifier body.

[0033] In this solution, the fixed chamber is arranged at the lower end of the gasifier body, which is conducive to receiving the materials generated by the gasifier body.

[0034] The positive and progressive effects of the present invention are as follows: the rotating mechanism and the fixed chamber are arranged separately, and the so-called separate arrangement means that the rotating mechanism and the fixed chamber are two independent structures, and there is no direct contact between the two. Such an arrangement facilitates the disassembly of the grate, and then facilitates the inspection and maintenance of the grate to extend its life; in addition, due to the separate arrangement of the rotating mechanism, the weight driven by the rotating mechanism is greatly reduced, and the local transmission method greatly reduces the mechanical power required for the rotation process to reduce the energy consumed; the setting of the mounting hole facilitates the rotating mechanism to enter the fixed chamber and act on the material in the fixed chamber; the setting of the scraper is conducive to scraping the material to the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 FIG. 1 is a structural cross-sectional view of a gasifier according to an embodiment of the present invention.

[0036] Figure 2 FIG. 4 is a top view of a rotating mechanism according to an embodiment of the present invention.

[0037] Figure 3 A perspective view of a gasifier grate according to an embodiment of the present invention.

[0038] Figure 4 Another perspective view of a gasifier grate according to an embodiment of the present invention.

[0039] Figure 5 The figure is an exploded schematic diagram of a gasifier grate according to an embodiment of the present invention.

[0040] Figure 6 The figure is a schematic structural diagram of a gasification furnace grate according to an embodiment of the present invention.

[0041] Figure 7 FIG. 4 is a schematic structural diagram of a fixed chamber according to an embodiment of the present invention.

[0042] Figure 8 It is a structural schematic diagram of a rotating mechanism according to an embodiment of the present invention.

[0043] Description of reference numerals:

[0044] Bottom edge 1

[0045] Skirt bottom edge 2

[0046] Metal layer 3

[0047] Insulation layer 4

[0048] Casting layer 5

[0049] Inspection port 6

[0050] Blanking port 7

[0051] Water seal plate 8

[0052] Drain pan 9

[0053] Extension plate 18

[0054] Suspension mechanism 19

[0055] Splitting Cone 10

[0056] Putty knife 11

[0057] First blade 111

[0058] The second blade 112

[0059] Bottom sealing plate 12

[0060] Base 13

[0061] Loading plate 131

[0062] Outer wall 132

[0063] Water seal wall 133

[0064] Water seal groove 14

[0065] Driving mechanism 15

[0066] Water seal inlet pipe 16

[0067] Support frame 17

[0068] Gasifier 100

[0069] Gasifier grate 200

[0070] Fixed chamber 210

[0071] Rotating mechanism 220

[0072] Gasifier body 300

[0073] Solid material path 400

[0074] Gasification gas path 500 DETAILED DESCRIPTION

[0075] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0076] like Figures 1 to 8 As shown, the present invention provides a gasifier grate 200, which includes a fixed chamber 210 and a rotating mechanism 220. The fixed chamber 210 is used to receive materials in the gasifier body 300. The bottom of the fixed chamber 210 is provided with a mounting hole and a material drop port 7. The rotating mechanism 220 is arranged separately from the fixed chamber 210, and the rotating mechanism 220 is at the bottom of the fixed chamber 210 and partially extends into the fixed chamber 210 through the mounting hole; the portion of the rotating mechanism 220 extending into the fixed chamber 210 is provided with a scraper 11, and the rotating mechanism 220 drives the scraper 11 to rotate so as to push the material to the material drop port 7 for discharge.

[0077] In the present embodiment, the rotating mechanism 220 and the fixed chamber 210 are arranged separately. The so-called separate arrangement means that the rotating mechanism 220 and the fixed chamber 210 are two independent structures, and there is no direct contact between the two. Such an arrangement facilitates the disassembly of the grate, and then facilitates the inspection and maintenance of the grate to extend its life; in addition, since the rotating mechanism 220 is arranged separately, the weight driven by the rotating mechanism 220 is greatly reduced, and the local transmission method greatly reduces the mechanical power required for the rotation process to reduce the energy consumed; the setting of the mounting hole facilitates the rotating mechanism 220 to enter the fixed chamber 210 and act on the material in the fixed chamber 210; the setting of the scraper 11 is conducive to scraping the material to the discharge port 7.

[0078] It should be noted that when the gasifier 100 is in operation, the gasifier body 300 and the fixed chamber 210 are stationary, and the material falls from the top of the gasifier 100 and accumulates in the fixed chamber 210 through the dividing cone 10. The rotating mechanism 220 drives the scraper 11 to rotate and pushes the gasified carbon in the material to the drop port 7 to realize the ash discharge of the grate; in addition, the fixed chamber 210 is vertically connected to the lower edge 1 of the furnace of the gasifier 100, and plays the role of heat preservation, receiving materials and discharging channels during the grate discharging process. The rotating mechanism 220 serves as the ash discharge power structure of the grate, and is mainly composed of the dividing cone 10, the scraper 11, the water seal groove 14, the transmission gear and the reducer. The rotating mechanism 220 is arranged at the center of the circle of the fixed chamber 210 (in the top view), and the two form a grate as a whole through a maze structure that does not interfere with each other. A water seal is used in the gap at the connection between the fixed chamber 210 and the rotating mechanism 220 to ensure the sealing of the furnace during operation. This solution only requires the disassembly of the rotating mechanism 220, which greatly reduces the difficulty and complexity of the work.

[0079] refer to Figure 1 It is understood that the rotating mechanism 220 also includes a base 13 and a dividing cone 10. The dividing cone 10 is installed at the upper end of the base 13. Part of the dividing cone 10 extends into the fixed chamber 210. The scraper 11 is installed at the part of the dividing cone 10 extending into the fixed chamber 210. The base 13 is located below the fixed chamber 210.

[0080] In this embodiment, the setting of the dividing cone 10 is conducive to evenly transporting the material entering the fixed chamber 210 to the interior of the fixed chamber 210 to form a material accumulation layer of a certain height. At the same time, the top area of ​​the material accumulation layer will slide down through the surface of the dividing cone 10, thereby ensuring the continuity of the dust removal process; the scraper 11 is installed on the part of the dividing cone 10 extending into the fixed chamber 210, so as to facilitate scraping the material transported by the dividing cone 10 to the drop port 7.

[0081] It should be noted that, in order to further prevent the gasifier 100 from overheating due to heat conduction, the dividing cone 10 is also designed with a casting layer 5 and a heat-insulating layer 4. The design angle of the dividing cone 10 is 45 degrees, which is greater than the stacking angle of the granular or powdered gasified carbon. The scraper 11 is horizontally inserted into the inside of the dividing cone 10 and fixed to the metal layer 3 by bolt connection. Due to the high internal temperature, the material of the scraper 11 is selected to be high-temperature resistant 321 stainless steel; in addition, the solid raw material path 400 and the gasification gas path 500 are as shown in Figure 1 shown.

[0082] refer to Figure 2It is understood that the scraper 11 is detachably mounted on the dividing cone 10; and / or the scraper 11 includes a first blade 111 and a second blade 112, and an obtuse angle of 120 degrees to 135 degrees is formed between the first blade 111 and the second blade 112.

[0083] In the present embodiment, the scraper 11 is detachably mounted on the dividing cone 10. As the most easily damaged component of the grate, the detachable design ensures the convenience of maintenance or replacement of the scraper 11, thereby indirectly extending the service life of the grate; in addition, an obtuse angle of 120 degrees to 135 degrees is formed between the first blade 111 and the second blade 112. The above arrangement reduces the risk of damage by reducing the reaction force of the material during the material shifting process. Furthermore, the above-mentioned obtuse angle design of the scraper 11 can effectively reduce the resistance impact during material shifting. At the same time, the inner surface of the scraper 11 is highly fitted with the side of the dividing cone 10, and the angle between the first blade 111 and the second blade 112 is preferably 130 degrees.

[0084] It should be noted that the ash removal adopts the design of active ash removal by the scraper 11, the material discharge port 7 is set at the circumference of the fixed chamber 210, and the rotating mechanism 220 drives the scraper 11 to rotate around the central axis to push the material to the material discharge port 7 to achieve ash removal. Compared with the passive ash removal of the traditional static scraper 11, it can achieve a 100% ash removal success rate; this process preferentially discharges the gasified carbon at the bottom of the accumulation layer, thereby ensuring the residence time of the material in the gasifier 100; the entire ash removal process is dry ash removal, which avoids the contact between gasified carbon and water in the wet ash removal process of the traditional updraft gasifier 100, thereby ensuring the convenience of downstream application of gasified carbon, that is, In the present invention, the ash of the gasifier grate 200 does not come into contact with water during the entire ash discharge process, which is a dry ash discharge. This ash discharge form ensures that the gasification solid phase product is dry and free of water, which is greatly beneficial to the storage, transportation, and resource processing and disposal of the ash at the downstream end; the mounting end of the scraper 11 is horizontally inserted into the interior of the dividing cone 10 and then connected and fixed by bolts; this scheme is an active ash discharge by the rotation of the scraper 11, which avoids the hidden danger of ash discharge blockage; and there is no silo, the discharge port 7 is directly discharged to the outside, and the structure is simple.

[0085] refer to Figure 1 It is understood that the outer wall 132 of the base 13 is provided with a water seal groove 14, and the fixed chamber 210 includes a water seal plate 8, which extends downward from the bottom wall of the fixed chamber 210 until it extends into the water seal groove 14, and the water seal groove 14 is used to accommodate a liquid medium.

[0086] In this embodiment, the water sealing plate 8 is extended into the water sealing groove 14 to form a water sealing system to prevent gas leakage from the gasifier 100 .

[0087] It should be noted that the water seal plate 8 is inserted into the water seal groove 14 to form a water seal structure at the connection between the fixed chamber 210 of the grate and the rotating mechanism 220. The above-mentioned water seal plate 8 is annular and is located on the peripheral side of the base 13; in addition, the base 13 serves as the load-bearing base of the dividing cone 10, and the side is designed with a water seal groove 14 and the water seal plate 8 to form the water seal structure of the grate. The upper end of the base 13 is connected to the lower end of the dividing cone 10, and the lower end of the base 13 is located on the large gear plate of the driving mechanism 15; the water seal inlet pipe 16 is located at the central position inside the base 13, and the support frame 17 is an integral load-bearing component of the grate rotating mechanism 220.

[0088] refer to Figure 1-Figure 3 It is understood that the base 13 includes a supporting plate 131, an outer wall 132 and a water seal wall 133. The water seal wall 133 is arranged around the bottom of the outer wall 132 and forms a water seal groove 14 between the outer wall 132; the supporting plate 131 is arranged at the top inside the outer wall 132 for installing the dividing cone 10; an extension plate 18 is provided at the mounting hole of the fixed chamber 210, and the extension plate 18 extends downward and is located between the outer wall 132 and the dividing cone 10.

[0089] In this embodiment, the arrangement of the bearing plate 131 , the outer side wall 132 , the water sealing wall 133 and the extension plate 18 further improves the sealing performance of the water sealing system.

[0090] It should be noted that the extension plate 18 does not contact with components on the rotating mechanism 220 such as the bearing plate 131 , the outer wall 132 , and the water sealing wall 133 .

[0091] refer to Figure 1 It is understood that an overflow port is provided at the top of the water seal groove 14 , a drain pan 9 is provided at the fixed chamber 210 , and the drainage path of the overflow port is directed toward the drain pan 9 .

[0092] In this embodiment, the overflow port and the drain pan 9 are arranged so that after the water level in the water seal groove 14 reaches a certain height, it flows from the overflow port to the drain pan 9 and is further discharged. Compared with the traditional upward suction gasifier 100, the contact area between the water seal water of this grate and the internal space of the gasifier 100 is very small, thereby solving the problem that the larger contact area between the water seal water and the internal space of the gasifier 100 causes more heat loss.

[0093] refer to Figure 1 It is understood that the drain pan 9 has a suspension structure, and the drain pan 9 is suspended at the bottom of the fixed chamber 210 through the suspension structure;

[0094] And / or, the drain pan 9 is detachably connected to the fixed chamber 210 .

[0095] In this embodiment, the provision of the suspension mechanism 19 is conducive to disassembling the drain pan 9 from the fixed chamber 210 to facilitate the inspection and maintenance of the grate. In addition, the suspension mechanism 19 can further improve the sealing performance of the above-mentioned water seal system.

[0096] It should be noted that when the grate needs to be inspected or maintained, first open the inspection port 6, remove the suspension fulcrum of the suspension structure of the drain pan 9, then remove the scraper 11 and move it out through the inspection port 6, then remove the flange connection of the water seal inlet pipe 16, and then the entire rotating mechanism 220 of the grate can be moved vertically downward; this detachable design is greatly beneficial to the inspection and maintenance of the equipment, thereby indirectly increasing the service life of the equipment; the contact area between the water seal water and the thermal environment inside the gasifier 100 is very small, which reduces the heat loss of the gasifier 100, thereby ensuring high energy utilization of the system.

[0097] refer to Figure 1 It is understood that a bottom sealing plate 12 is provided inside the distribution cone 10, and the bottom sealing plate 12 is used to seal the distribution cone 10; and / or, the gasification furnace grate 200 includes a driving mechanism 15 and a support frame 17, the driving mechanism 15 is arranged between the base 13 and the support frame 17, and is used to drive the rotating mechanism 220 to rotate, and the support frame 17 supports the rotating mechanism 220; and / or, the rotating mechanism 220 includes a water seal inlet pipe 16, and the water seal water pipe is arranged from the support frame 17 toward the supporting plate 131, and is arranged in a 360-degree winding manner at the position where the base 13 and the distribution cone 10 are connected.

[0098] In this embodiment, the bottom sealing plate 12 is used to hard-seal the material distribution cone 10 to prevent leakage of materials; the water seal inlet pipe 16 is used to supply water to the water seal groove 14. The arrangement of the above-mentioned water seal water pipe and the above-mentioned drain pan 9 and other components not only realizes the function of water inlet and outlet of the water seal system pipeline, but also can water-cool the base 13, and can also further reduce the heat loss of the gasifier 100, thereby ensuring efficient utilization of system energy.

[0099] It should be noted that the water seal water pipe and the drain pan 9 and other components provide water cooling for the base 13 to prevent the risk of overheating caused by the temperature inside the gasification furnace 100 being conducted through the metal layer 3; in addition, the starting position of the water seal water inlet pipe 16 is located at the internal center axis of the base 13, and the support frame 17 is an integral load-bearing component of the rotating mechanism 220 of the grate.

[0100] refer to Figure 1 It is understood that the fixed chamber 210 includes a metal layer 3, an insulation layer 4 and a casting layer 5, the metal layer 3 is arranged on the outermost side, and the insulation layer 4 is arranged between the metal layer 3 and the casting layer 5; and / or, the fixed chamber 210 also includes an inspection port 6, which extends horizontally through the metal layer 3, the insulation layer 4 and the casting layer 5, and is arranged horizontally toward the scraper 11.

[0101] In the present embodiment, the metal layer 3 is arranged at the outermost side, and its non-direct contact with the thermal environment inside the gasifier 100 greatly reduces the heat loss of the gasifier 100, thereby ensuring the high energy utilization rate of the system; in addition, the insulation layer 4 and the casting layer 5 serve as the insulation structure of the gasifier 100, which can prevent the heat loss inside the gasifier 100 and the insulation temperature from being conducted to the metal layer 3 to cause the gasifier 100 to overheat; the arrangement of the inspection port 6 is convenient for installing the scraper 11 to the dividing cone 10, or removing the scraper 11 from the dividing cone 10.

[0102] It should be noted that the direct contact design between the water seal inlet and outlet pipes and the heated metal layer 3 also greatly reduces the heat loss of the gasifier 100, thereby ensuring high energy utilization of the system; in addition, the insulation layer 4 can ensure a smaller heat loss during the operation of the gasifier 100 and the outer metal layer 3 will not overheat.

[0103] refer to Figure 1 It is understood that the present invention also provides a gasifier 100 , which includes the gasifier grate 200 as above, and also includes a gasifier body 300 , and the fixed chamber 210 is arranged at the lower end of the gasifier body 300 .

[0104] In this embodiment, the fixed chamber 210 is disposed at the lower end of the gasifier body 300 , which is conducive to receiving the materials generated by the gasifier body 300 .

[0105] It should be noted that, specifically, the gasification furnace body 300 includes a lower edge 1 and a skirt lower edge 2, the bottom end of the lower edge 1 is lower than the bottom end of the skirt lower edge 2, and is arranged on the outer peripheral side of the skirt lower edge 2, and the metal layer 3 of the fixed chamber 210 is connected to the bottom end of the skirt lower edge 2 as a whole by welding; in addition, the entire grate of the present scheme is detachable.

[0106] For easier understanding, the following further explanation is given:

[0107] The fixed chamber 210 in this embodiment includes a metal layer 3, an insulation layer 4, a casting layer 5, an inspection port 6, a material drop port 7, a water seal plate 8 and a drain pan 9; the rotating mechanism 220 in this embodiment includes a material dividing cone 10, a scraper 11, a bottom seal plate 12, a base 13, a water seal groove 14, a driving mechanism 15, a water seal inlet pipe 16 and a support frame 17.

[0108] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship of the device or element in normal use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation at any time, and therefore cannot be understood as a limitation of the present invention in this regard.

[0109] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A gasifier grate, characterized in that: The gasifier grate includes a fixed chamber and a rotating mechanism. The fixed chamber is used to receive the material in the gasifier body. The bottom of the fixed chamber has a mounting hole and a material drop port. The rotating mechanism is arranged separately from the fixed chamber, and the rotating mechanism is at the bottom of the fixed chamber and partially extends into the fixed chamber through the mounting hole; The part of the rotating mechanism extending into the fixed chamber is provided with a scraper, and the rotating mechanism drives the scraper to rotate so as to push the material to the material outlet for discharge.

2. The gasifier grate according to claim 1, characterized in that: The rotating mechanism also includes a base and a dividing cone. The dividing cone is installed on the upper end of the base. Part of the dividing cone extends into the fixed chamber. The scraper is installed on the part of the dividing cone extending into the fixed chamber. The base is located below the fixed chamber.

3. The gasifier grate according to claim 2, characterized in that: The scraper is detachably mounted on the dividing cone; And / or, the scraper comprises a first blade and a second blade, and an obtuse angle of 120 degrees to 135 degrees is formed between the first blade and the second blade.

4. The gasifier grate according to claim 2, characterized in that: The outer wall of the base is provided with a water seal groove, and the fixed chamber comprises a water seal plate, which extends downward from the bottom wall of the fixed chamber until it extends into the water seal groove, and the water seal groove is used to contain liquid medium.

5. The gasifier grate according to claim 4, characterized in that: The base includes a bearing plate, an outer side wall and a water seal wall, wherein the water seal wall is arranged around the bottom of the outer side wall and forms a water seal groove with the outer side wall; The bearing plate is arranged at the top of the inner side wall of the outer side wall for installing the material distribution cone; an extension plate is arranged at the mounting hole of the fixed chamber, and the extension plate extends downward and is located between the outer side wall and the material distribution cone.

6. The gasifier grate according to claim 4, characterized in that: An overflow port is arranged at the top of the water seal groove, a drainage pan is arranged in the fixed chamber, and a drainage path of the overflow port faces the drainage pan.

7. The gasifier grate according to claim 6, characterized in that: The drain pan has a hanging structure, and the drain pan is hung at the bottom of the fixed chamber through the hanging structure; And / or, the drain pan is detachably connected to the fixed chamber.

8. The gasifier grate according to claim 2, characterized in that: A bottom sealing plate is provided inside the material distribution cone, and the bottom sealing plate is used to seal the material distribution cone; And / or, the gasifier grate comprises a driving mechanism and a supporting frame, the driving mechanism is arranged between the base and the supporting frame and is used to drive the rotating mechanism to rotate, and the supporting frame supports the rotating mechanism; And / or, the rotating mechanism includes a water seal inlet pipe, which is arranged from the support frame toward the bearing plate and is arranged in a 360-degree coil at the position where the base is connected to the dividing cone.

9. The gasifier grate according to claim 1, characterized in that: The fixed chamber comprises a metal layer, a heat-insulating layer and a casting layer, wherein the metal layer is arranged at the outermost side and the heat-insulating layer is arranged between the metal layer and the casting layer; And / or, the fixed chamber further comprises an inspection opening, which horizontally extends through the metal layer, the insulation layer and the casting layer and is horizontally arranged toward the plaster scraper.

10. A gasifier, characterized in that: It comprises the gasifier grate according to any one of claims 1 to 9, and also comprises a gasifier body, wherein the fixed chamber is arranged at the lower end of the gasifier body.

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