Gasification furnace and use method thereof

Abstract

The invention discloses a gasification furnace and a use method thereof. The gasification furnace comprises a furnace body, a feeding device, a combustion device and a gas inlet device, the furnace body comprises a gasification section which is provided with a gasification cavity; the feeding device is connected with the furnace body and is provided with a feeding hole for injecting coal slurry into the gasification cavity; the combustion device is connected with the furnace body and is provided with a combustion port for injecting heat into the gasification cavity; the gas inlet device comprises a gas inlet ring and a plurality of gas ejector pipes, the gas inlet ring is connected with the furnace body and arranged in the circumferential direction of the furnace body, the gas inlet ring is provided with an annular cavity used for injecting a gasifying agent, the gas ejector pipes are evenly distributed in the circumferential direction of the gas inlet ring and connected with the gas inlet ring, and the gas ejector pipes are arranged towards the gasifying cavity. According to the gasification furnace disclosed by the embodiment of the invention, the gasification agent is uniformly sprayed into the gasification cavity through the plurality of gas spraying pipes, so that the gasification agent and coal slurry are uniformly mixed, the gasification reaction is more sufficient, and the gasification reaction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal gasification devices, and in particular to a gasifier and a method for using the same. Background Art

[0002] The gasifier uses coal slurry as raw material to gasify and obtain combustible gas and other by-products. It is the core equipment of the coal gasification device. It has the advantages of high efficiency, environmental protection, wide adaptability, strong flexibility, and energy saving. Therefore, it is widely used in coal chemical industry.

[0003] In the related art, the upper part of the gasifier is the gasification section, and the lower part is the cooling section. The gasification section is the main area where the gasification reaction occurs. The coal slurry and the gasifying agent are mixed, burned and generate combustible gas in the gasification section. The coal ash formed by the combustion enters the cooling section and is quickly cooled and solidified for collection. In the above-mentioned related art, the gasifying agent is sprayed through the opening on the gasification section to promote combustion and accelerate the gasification reaction. However, there is usually only one opening on the gasification section for spraying the gasifying agent, which leads to uneven distribution of the gasifying agent in the gasification section, which in turn leads to insufficient and uniform gasification reaction and low efficiency. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a gasifier, in which the gasifying agent is sprayed into the gasification chamber simultaneously through multiple injection pipes, which can improve the uniformity of the distribution of the gasifying agent in the gasification chamber, so that the gasifying agent and coal slurry are evenly mixed, the gasification reaction is more complete, and thus the gasification reaction efficiency is improved.

[0006] The gasifier of the embodiment of the present invention comprises a furnace body, a feeding device, a combustion device and an air intake device; the furnace body comprises a gasification section, and the gasification section has a gasification chamber; the feeding device is connected to the furnace body, and the feeding device has a feeding port for injecting coal slurry into the gasification chamber; the combustion device is connected to the furnace body, and the combustion device has a combustion port for injecting heat into the gasification chamber;

[0007] The air intake device includes an air intake ring and a plurality of injection pipes, wherein the air intake ring is connected to the furnace body and arranged along the circumference of the furnace body, the air intake ring has an annular cavity for injecting a gasifying agent, the plurality of injection pipes are evenly distributed along the circumference of the air intake ring and connected to the air intake ring, and the injection pipes are arranged toward the gasification cavity.

[0008] In some embodiments, the furnace body includes an inner furnace body and an outer furnace body, the inner furnace body encloses the gasification chamber, the outer furnace body is sleeved on the inner furnace body and arranged at an interval with the inner furnace body, and the outer furnace body is connected to the inner furnace body; the air intake ring includes a fixed ring and a rotating ring, the fixed ring is connected to the outer furnace body, the rotating ring is rotatably connected to the inner furnace body, the rotating ring and the fixed ring enclose the annular chamber, the fixed ring is connected to an air intake pipe for injecting gasifying agent into the gas chamber; the injection pipe is connected to the rotating ring, the injection pipe extends obliquely toward the inside of the rotating ring, so that the reaction force generated when the gasifying agent is ejected through the injection pipe pushes the rotating ring to rotate relative to the fixed ring.

[0009] In some embodiments, the inner furnace body has a mounting groove, which divides the inner furnace body into a first section and a second section arranged in sequence from top to bottom, and the rotating ring is rotatably disposed in the mounting groove, and a first rolling body is disposed between the rotating ring and the inner furnace body; and / or the rotating ring has an annular groove, and the annular groove has an annular notch opening arranged toward the outer furnace body, and the fixed ring blocks the annular notch opening to form the air cavity, and a second rolling body is disposed between the rotating ring and the fixed ring.

[0010] In some embodiments, the rotating ring has a first groove body arranged toward the first section and a second groove body arranged toward the second section, the lower side of the first section is arranged in the first groove body, the upper side of the second section is arranged in the second groove body, and the first rolling body is provided in both the first groove body and the second groove body; the ring groove has an upper groove wall and a lower groove wall arranged relatively to each other in the up and down directions, the fixed ring has a third groove body arranged upward and a fourth groove body arranged downward, the upper groove wall is provided in the third groove body, the lower groove wall is provided in the fourth groove body, and the second rolling body is provided in both the third groove body and the fourth groove body.

[0011] In some embodiments, the feeding device includes a first annular tube and a feeding pipe, the first annular tube is disposed in the gasification chamber and arranged along the circumference of the furnace body, the first annular tube has a plurality of feeding ports, the plurality of feeding ports are evenly arranged along the circumference of the first annular tube, the feeding pipe passes through the furnace wall of the furnace body and one end is connected to the first annular tube.

[0012] In some embodiments, the combustion device includes a fuel pipe, a second annular tube and a plurality of burner heads, wherein the second annular tube is arranged along the circumference of the furnace body and is provided between the inner furnace body and the outer furnace body, the second annular tube has a fuel cavity for accommodating fuel, the fuel pipe passes through the outer furnace body, and one end is connected to the second annular tube; the plurality of burner heads are evenly arranged along the circumference of the second annular tube, the burner heads extend through the inner furnace body to the gasification cavity, and one end of the burner head faces the gasification cavity to form the combustion port.

[0013] In some embodiments, the furnace body also includes a cooling section, which is arranged on the lower side of the gasification section. The gasification furnace also includes a cooling device, which includes a cooling cylinder, which is mounted on the cooling section. The cooling cylinder has a cooling cavity, and the cavity wall of the cooling cavity has a first inlet for injecting cooling water and a first outlet for discharging cooling water. The first inlet is arranged on the upper side of the first outlet, and the first inlet, the cooling cavity and the first outlet form a first cooling channel.

[0014] In some embodiments, the cooling cylinder also has a first cavity provided on the upper side of the cooling cavity and a second cavity provided on the lower side of the cooling cavity, the cavity wall of the first cavity has a second inlet for injecting cooling water, and the cavity wall of the second cavity has a second outlet for discharging cooling water; the cooling device also includes a plurality of cooling pipes, the cooling pipes are provided in the cooling cavity, and the plurality of cooling pipes are arranged along the circumference of the cooling cylinder, the upper end of the cooling pipe passes through the upper cavity wall of the second cavity and is connected to the first cavity, and the lower end passes through the lower cavity wall of the second cavity and is connected to the second cavity, the second inlet, the first cavity, the inner cavity of the cooling pipe, the second cavity and the second outlet form a second cooling channel, and the second cooling channel is not connected to the first cooling channel.

[0015] In some embodiments, the cooling pipe is rotatable along the axis of the cooling tube, the upper cavity wall and the lower cavity wall of the second cavity respectively have a first make way groove and a second make way groove for the cooling pipe to rotate, a first rotating plate blocked in the first make way groove is provided in the first cavity, and a second rotating plate blocked in the second make way groove is provided in the second cavity, and both ends of the cooling pipe are respectively connected to the first rotating plate and the second rotating plate;

[0016] A driving plate is connected to the upper side of the first rotating plate, and the driving plate and the second inlet are arranged at the same height. A second water inlet pipe is connected to the outer side of the cooling cylinder, and the second water inlet pipe is communicated with the second inlet. The second water inlet pipe extends along the tangential direction of the cooling cylinder to utilize the cooling water injected into the first cavity by the second water inlet pipe to drive the driving plate to rotate.

[0017] The method for using a gasifier according to an embodiment of the present invention adopts the gasifier according to any of the above embodiments, and the method for using a gasifier comprises the following steps:

[0018] Injecting heat into the gasification chamber through the combustion port of the fuel device so that the temperature of the gasification chamber rises and is maintained at a preset temperature;

[0019] injecting coal slurry into the gasification chamber through the feed port of the feed device;

[0020] The gasifying agent is injected into the gasification chamber through the plurality of injection pipes of the air intake device.

[0021] The gasifier of the embodiment of the present invention, when performing a gasification reaction, first injects heat into the gasification chamber through the combustion port of the fuel device, so that the temperature of the gasification chamber rises to a preset temperature; then injects coal slurry into the gasification chamber through the feed port of the feed device, and at the same time injects a gasifying agent into the gasification chamber through multiple injection pipes of the air intake device; thereby, the coal slurry and the gasifying agent burn under the action of high temperature, perform a gasification reaction, and generate combustible gas.

[0022] In the gasifier of the embodiment of the present invention, since multiple injection pipes are evenly distributed along the circumference of the furnace body, the gasifying agent is simultaneously injected into the gasification chamber through the multiple injection pipes, which can improve the uniformity of the distribution of the gasifying agent in the gasification chamber, so that the gasifying agent and the coal slurry are evenly mixed, the gasification reaction is more complete, and thus the gasification reaction efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a gasification chamber according to an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the internal structure of a furnace body of a gasification chamber according to an embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the positions of a feeding device, a combustion device and an air intake device of a gasification chamber according to an embodiment of the present invention.

[0026] Figure 4 It is a schematic structural diagram of an air intake device of a gasification chamber according to an embodiment of the present invention.

[0027] Figure 5 It is a schematic structural diagram of a combustion device and a feeding device of a gasification chamber according to an embodiment of the present invention.

[0028] Figure 6 It is a schematic structural diagram of a cooling device for a gasification chamber according to an embodiment of the present invention.

[0029] Figure 7 It is a schematic diagram of the internal structure of a cooling cylinder of a gasification chamber according to an embodiment of the present invention.

[0030] Figure 8 The figure is a schematic diagram of the positions of the water inlet pipe and the driving plate of the cooling cylinder of the gasification chamber according to one embodiment of the present invention.

[0031] Reference numerals: 100, gasifier;

[0032] 1. Inner furnace body; 11. Gasification section; 111. Gasification chamber; 12. Cooling section; 13. Exhaust pipe; 14. Slag discharge pipe; 15. Support seat; 16. First section; 17. Second section;

[0033] 2. External furnace body;

[0034] 3. Feeding device; 31. First annular tube; 311. Feeding port; 32. Feeding tube;

[0035] 4. Combustion device; 41. Fuel pipe; 42. Second annular pipe; 43. Combustion head;

[0036] 5. air intake device; 51. annular cavity; 52. fixed ring; 521. third slot body; 522. fourth slot body; 53. rotating ring; 531. ring notch; 532. first slot body; 533. second slot body; 54. jet pipe; 55. air intake pipe; 56. rolling ball; 57. roller;

[0037] 6. Cooling device; 61. Cooling cylinder; 611. Cooling cavity; 612. First cavity; 613. Second cavity; 614. First make way groove; 615. Second make way groove; 62. Cooling tube; 621. First rotating plate; 622. Second rotating plate; 623. Driving plate; 63. First water inlet pipe; 64. First water outlet pipe; 65. Second water inlet pipe; 66. Second water outlet pipe. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0039] like Figure 1 and Figure 2As shown, the gasifier 100 of the embodiment of the present invention includes a furnace body, a feeding device 3, a combustion device 4 and an air intake device 5; the furnace body includes a gasification section 11, and the gasification section 11 has a gasification chamber 111; the feeding device 3 is connected to the furnace body, and the feeding device 3 has a feeding port 311 for injecting coal slurry into the gasification chamber 111; the combustion device 4 is connected to the furnace body, and the combustion device 4 has a combustion port for injecting heat into the gasification chamber 111; the air intake device 5 includes an air intake ring and a plurality of injection pipes 54, the air intake ring is connected to the furnace body, the air intake ring is arranged along the circumference of the furnace body, the air intake ring has an annular cavity 51 for injecting a gasifying agent, and a plurality of injection pipes 54 are evenly distributed along the circumference of the air intake ring and connected to the air intake ring, and the injection pipes 54 are arranged toward the gasification chamber 111.

[0040] The gasifier 100 of the embodiment of the present invention, when performing a gasification reaction, first injects heat into the gasification chamber 111 through the combustion port of the fuel device, so that the temperature of the gasification chamber 111 rises to a preset temperature; then, coal slurry is injected into the gasification chamber 111 through the feed port 311 of the feed device 3, and at the same time, a gasifying agent is injected into the gasification chamber 111 through a plurality of injection pipes 54 of the air intake device 5; thereby, the coal slurry and the gasifying agent burn under the action of high temperature, undergo a gasification reaction, and generate combustible gas.

[0041] In the gasifier 100 of the embodiment of the present invention, since the multiple injection pipes 54 are evenly distributed along the circumference of the furnace body, the gasifying agent is simultaneously injected into the gasification chamber 111 by the multiple injection pipes 54, which can improve the uniformity of the distribution of the gasifying agent in the gasification chamber 111, so that the gasifying agent and the coal slurry are evenly mixed, the gasification reaction is more complete, and thus the gasification reaction efficiency is improved.

[0042] The preset temperature is the temperature required for coal slurry gasification, which is usually greater than 600° C. In actual production, technicians in this field can adjust and optimize it according to specific circumstances to improve gasification efficiency and economic benefits.

[0043] Gasifier refers to the gaseous medium that reacts with coal slurry during gasification. The main component of the gasifier is oxygen, and it usually also contains gases such as water vapor and carbon dioxide. Technical personnel in this field can adjust the composition and proportion of the gasifier according to the different components of the coal slurry to improve the gasification efficiency.

[0044] As an example, Figure 1 and Figure 2 As shown, the furnace body includes a gasification section 11 and a cooling section 12. The cooling section 12 is arranged at the lower side of the gasification section 11. The upper side of the gasification section 11 is connected to an exhaust pipe 13, and the lower side of the cooling section 12 is connected to a slag discharge pipe 14. The coal slurry burns and undergoes a gasification reaction in the gasification section 11. The combustible gas generated by the gasification reaction is transported upward and collected, and the coal slag generated by the combustion of the coal slurry falls downward and is discharged from the slag discharge pipe 14 after being cooled by the cooling section 12.

[0045] like Figure 2 As shown, the cross section of the furnace body is circular, the gasification section 11 surrounds the above-mentioned gasification chamber 111, the inner diameter of the exhaust pipe 13 and the inner diameter of the cooling section 12 are both smaller than the inner diameter of the gasification section 11, and the inner diameter of the slag discharge pipe 14 is smaller than the inner diameter of the cooling section 12.

[0046] A support seat 15 is connected to the lower side of the furnace body. The support seat 15 is cylindrical and is mounted on the lower side of the furnace body. The support seat 15 can provide stable support for the furnace body to ensure the stability of the furnace body.

[0047] In some embodiments, Figures 2 to 4 As shown, the furnace body includes an inner furnace body 1 and an outer furnace body 2, the inner furnace body 1 surrounds a gasification chamber 111, the outer furnace body 2 is sleeved on the inner furnace body 1 and arranged at a distance from the inner furnace body 1, and the outer furnace body 2 is connected to the inner furnace body 1; the air intake ring includes a fixed ring 52 and a rotating ring 53, the fixed ring 52 is connected to the outer furnace body 2, the rotating ring 53 is rotatably connected to the inner furnace body 1, the rotating ring 53 and the fixed ring 52 surround an annular chamber 51, and the fixed ring 52 is connected to an air intake pipe 55 for injecting a gasifying agent into the air chamber; the injection pipe 54 is connected to the rotating ring 53, and the injection pipe 54 extends obliquely toward the inside of the rotating ring 53, so that the reaction force generated when the gasifying agent is ejected through the injection pipe 54 drives the rotating ring 53 to rotate relative to the fixed ring 52.

[0048] The gasifying agent is injected into the annular cavity 51 by means of the air inlet pipe 55, and the gasifying agent in the annular cavity 51 is uniformly sprayed into the gasification cavity 111 through multiple injection pipes 54. Since the nozzles are inclined and extended, the reaction force generated when the injection pipes 54 spray the gasifying agent into the gasification cavity 111 can push the rotating ring 53 to rotate relative to the fixed ring 52, thereby driving the multiple injection pipes 54 to rotate simultaneously; thus, the gasifying agent is sprayed through the rotating injection pipes 54 at different positions along the circumference of the gasification cavity 111, which can further improve the uniformity of the distribution of the gasifying agent in the gasification cavity 111, so that the gasifying agent and the coal slurry are evenly mixed, the gasification reaction is more sufficient, and thus the gasification reaction efficiency is improved.

[0049] Optionally, a rotating sealing structure is provided between the fixed ring 52 and the rotating ring 53 .

[0050] In this way, the sealing of the annular cavity 51 can be ensured, and leakage of the gasifying agent during the rotation of the rotating ring 53 can be prevented.

[0051] Optionally, the fixing ring 52 is fixedly connected to the inner wall of the outer furnace body 2 via a plurality of brackets, and the plurality of brackets are arranged along the circumference of the fixing ring 52 .

[0052] Thus, the stability of the connection between the fixing ring 52 and the outer furnace body 2 can be ensured.

[0053] Alternatively, if Figure 2 and Figure 3As shown, there are two air intake devices 5 , and the two air intake devices 5 are arranged vertically and spaced apart.

[0054] Thereby, the uniformity of the distribution of the gasifying agent in the height direction can be improved, thereby further improving the gasification reaction efficiency.

[0055] As an example, Figure 2 and Figure 3 As shown, the intake ring is coaxially arranged with the gasification section 11, and the multiple injection pipes 54 have the same inclination direction along the circumference of the intake ring. When the multiple injection pipes 54 spray the gasifying agent, the reaction force exerted on the rotating ring 53 is distributed more evenly, which can improve the rotation stability of the rotating ring 53.

[0056] One end of the jet pipe 54 is connected to the inner wall of the rotating ring 53 and communicates with the annular cavity 51, and the other end extends inwardly at an angle. The axis of the jet pipe 54 and the radial direction of the rotating ring 53 have a certain angle so that the reaction force generated when the jet pipe 54 sprays the gasifying agent can drive the rotating ring 53 to rotate.

[0057] like Figure 2 As shown, the upper side of the outer furnace body 2 extends to the exhaust pipe 13, and the lower side of the outer furnace body 2 extends to the upper side of the slag discharge pipe 14, that is, the exhaust pipe 13 and the gasification section 11 are both double-layer structures; thereby, the heat loss of the gasification section 11 can be reduced. The preset temperature is maintained in the gasification section 11, thereby improving the gasification reaction efficiency.

[0058] In some embodiments, Figure 3 and Figure 4 As shown, the inner furnace body 1 has a mounting groove, which divides the inner furnace body 1 into a first section 16 and a second section 17 arranged sequentially from top to bottom. The rotating ring 53 is rotatably arranged in the mounting groove, and a first rolling body is arranged between the rotating ring 53 and the inner furnace body 1; and / or the rotating ring 53 has an annular groove, and the annular groove has an annular notch 531 arranged toward the outer furnace body 2. The fixed ring 52 blocks the annular notch 531 to form an air cavity, and a second rolling body is arranged between the rotating ring 53 and the fixed ring 52.

[0059] By providing a first rolling body between the rotating ring 53 and the inner furnace body 1, the rotational resistance of the rotating ring 53 relative to the inner furnace body 1 can be reduced, so that the rotating ring 53 rotates more smoothly. By providing a second rolling body between the rotating ring 53 and the fixed ring 52, the rotational resistance of the rotating ring 53 relative to the fixed ring 52 can be reduced, and the smoothness of the rotation of the rotating ring 53 and the plurality of air injection pipes 54 can be further improved, while the stability of the rotation of the rotating ring 53 can be improved.

[0060] In addition, a rotation connection structure is provided between the inner furnace body 1 and the fixed ring 52 and the rotating ring 53 . The inner furnace body 1 and the fixed ring 52 can provide rotation support for the rotating ring 53 at the same time, thereby ensuring the rotation stability of the rotating ring 53 .

[0061] In some embodiments, Figure 3 and Figure 4 As shown, the rotating ring 53 has a first groove body 532 arranged toward the first section 16 and a second groove body 533 arranged toward the second section 17, the lower side of the first section 16 is arranged in the first groove body 532, and the upper side of the second section 17 is arranged in the second groove body 533, and the first groove body 532 and the second groove body 533 are both provided with a first rolling body; the ring groove 531 has an upper groove wall and a lower groove wall arranged relatively along the up and down directions, the fixed ring 52 has a third groove body 521 arranged upward and a fourth groove body 522 arranged downward, the upper groove wall is provided in the third groove body 521, the lower groove wall is provided in the fourth groove body 522, and the third groove body 521 and the fourth groove body 522 are both provided with a second rolling body.

[0062] Through the above arrangement, on the one hand, the upper side of the rotating ring 53 is connected to the first section 16 through the first groove body 532, and the lower side of the rotating ring 53 is connected to the second section 17 through the second groove body 533, so that the rotating ring 53 is stably connected to the inner furnace body 1, thereby ensuring the rotational stability of the rotating ring 53 and the multiple injection pipes 54.

[0063] On the other hand, the fixed ring 52 is sealed in the ring groove 531 of the rotating ring 53 to form the ring cavity 51; at the ring groove 531, the upper groove wall of the ring groove 531 is connected to the third groove body 521 on the upper side of the fixed ring 52, and the lower groove wall of the ring groove 531 is connected to the fourth groove body 522 on the lower side of the fixed ring 52, so that the rotating ring 53 is stably connected to the fixed ring 52, and at the same time the sealing of the ring cavity 51 can be ensured.

[0064] Optionally, the first rolling body includes a rolling ball 56 and a rolling wheel 57 .

[0065] Optionally, the second rolling element includes a rolling ball 56 and a rolling wheel 57 .

[0066] As an example, Figure 4 As shown, the rotating ring 53 is arranged in the installation groove, the first groove body 532 and the second groove body 533 are respectively arranged on the upper and lower sides of the rotating ring 53 and are symmetrical to each other, the first groove body 532 and the second groove body 533 both extend in the circumferential direction of the rotating ring 53 in a ring shape, and the cross-sections of the two are both U-shaped; the opening of the first groove body 532 faces upward, and the lower side of the first section 16 is arranged in the first groove body 532, and the opening of the second groove body 533 faces downward, and the upper side of the second section 17 is arranged in the second groove body 533, that is, the upper and lower sides of the rotating ring 53 are connected to the inner furnace body 1, which can ensure the smooth rotation of the rotating ring 53.

[0067] The connection structure of the first section 16 in the first slot 532 is the same as the connection structure of the second section 17 in the second slot 533 , and the connection structure of the first end in the first slot 532 is described in detail below by taking the connection structure of the first end in the first slot 532 as an example.

[0068] There is a gap between the lower side of the first section 16 and the bottom wall of the first groove body 532, and the two side walls of the first groove body 532 are respectively arranged on the inner and outer sides of the first section 16; the first rolling body includes a plurality of balls 56 and a plurality of rollers 57, and the plurality of balls 56 are evenly distributed along the circumference of the rotating ring 53. A part of the balls 56 are embedded in the lower side surface of the first section 16 and can rotate relative to the first section 16, and the other part protrudes from the lower side surface of the first section 16 and stops at the bottom wall of the first groove body 532. When the rotating ring 53 rotates, the balls 56 roll relative to the bottom wall of the first groove, thereby reducing the rotation resistance of the rotating ring 53 and improving the rotation stability of the rotating ring 53.

[0069] The multiple rollers 57 are divided into two groups. The two groups of rollers 57 are respectively arranged on the inner and outer sides of the first section 16, and are respectively connected to the two side walls of the first trough body 532. The multiple rollers 57 in the same group are evenly distributed along the circumference of the rotating ring 53; the rollers 57 are rotatably connected to the side walls of the first trough body 532, and their wheel surfaces stop at the side surfaces of the first section 16. Therefore, when the rotating ring 53 rotates, the rollers 57 roll along the side surfaces of the first section 16, which can reduce the rotation resistance of the rotating ring 53; at the same time, since the two groups of rollers 57 stop at the two side surfaces of the first section 16 respectively, they can limit the rotating ring 53, ensure that the rotating ring 53 rotates along the axis of the gasification chamber 111, and further ensure that the gasification agent sprayed from the multiple injection pipes 54 is evenly arranged along the circumference of the gasification chamber 111, so that the gasification agent and the coal slurry are evenly mixed, thereby improving the gasification efficiency.

[0070] like Figure 4 As shown, the annular groove is the internal cavity of the rotating ring 53, and the outward side of the annular groove has an annular groove opening 531, the fixed ring 52 is arranged at the annular groove opening 531, the third groove body 521 and the fourth groove body 522 are respectively arranged at the upper and lower sides of the fixed ring 52 and are symmetrical to each other, the third groove body 521 and the fourth groove body 522 are both extended in the circumferential direction of the fixed ring 52 in annular shape, and the cross sections of the two are both U-shaped; the opening of the third groove body 521 faces upward, and the upper groove wall of the annular groove opening 531 is arranged at In the third groove body 521, the opening of the fourth groove body 522 faces downward, and the lower groove wall of the annular groove 531 is arranged in the fourth groove body 522; thus, a part of the fixed ring 52 is arranged in the annular groove of the rotating ring 53 and is sealed in the annular groove 531 to form a sealed ring cavity 51, the inner ring wall of the fixed ring 52 is the cavity wall of the annular cavity 51, and the other part of the fixed ring 52 is arranged outside the annular groove, thereby forming a relatively stable rotating structure between the rotating ring 53 and the fixed ring 52.

[0071] The connection structure of the upper groove wall of the annular groove 531 in the third groove body 521 is the same as the connection structure of the lower groove wall of the annular groove 531 in the fourth groove body 522, and both are similar to the connection structure of the first section 16 in the first groove body 532. The connection structure of the upper groove wall of the annular groove 531 in the third groove body 521 is described in detail below as an example.

[0072] The second rolling body also includes a plurality of balls 56 and a plurality of rollers 57. The plurality of balls 56 are evenly distributed along the circumference of the fixed ring 52. A portion of the balls 56 is embedded in the upper groove wall of the ring groove 531 and is rotatable relative to the rotating ring 53. The spherical surface of the balls 56 stops at the groove bottom wall of the third groove body 521. When the rotating ring 53 rotates, the balls 56 roll relative to the groove bottom wall of the third groove body 521 to reduce the rotation resistance of the rotating ring 53.

[0073] The plurality of rollers 57 are evenly divided into two groups and are respectively connected to the two side walls of the third groove body 521 . The rollers 57 are rotatably connected to the side walls of the third groove body 521 , and the wheel surfaces of the rollers 57 stop at the rotating ring 53 . When the rotating ring 53 rotates, the rollers 57 roll along the sides of the rotating ring 53 to reduce the rotation resistance of the rotating ring 53 .

[0074] In some embodiments, Figure 5 As shown, the feeding device 3 includes a first annular tube 31 and a feeding tube 32. The first annular tube 31 is arranged in the gasification chamber 111 and is arranged along the circumference of the furnace body. The first annular tube 31 has a plurality of feeding ports 311. The plurality of feeding ports 311 are evenly arranged along the circumference of the first annular tube 31. The feeding tube 32 passes through the furnace wall of the furnace body and one end is connected to the first annular tube 31.

[0075] The coal slurry is injected into the first annular tube 31 through the feed pipe 32, and then the coal slurry enters the gasification chamber 111 through the multiple feed ports 311 on the first annular tube 31, which can improve the uniformity of the distribution of the coal slurry in the gasification chamber 111, so that the coal slurry and the gasification agent are evenly mixed, thereby improving the gasification efficiency.

[0076] As an example, Figure 2 and Figure 5 As shown, the feeding device 3 is arranged on the upper side of the air intake device 5, and the first annular tube 31 extends in a circular ring shape along the circumference of the gasification chamber 111. The diameter of the circular ring of the first annular tube 31 is larger than the inner diameter of the exhaust pipe 13, which can prevent the first annular tube 31 from obstructing the upward transportation process of the combustible gas.

[0077] The feed pipe 32 passes through the inner furnace body 1 and the outer furnace body 2, and one end is connected to the first annular tube 31, and the other end extends to the outside of the furnace body; multiple feed ports 311 are arranged on the lower side of the first annular tube 31; the coal slurry is injected into the first annular tube 31 through the feed pipe 32, and the coal slurry can fall downward through the multiple feed ports 311 and be fully mixed with the gasification agent, and then a gasification reaction occurs under the action of high temperature.

[0078] In some embodiments, Figure 5 As shown, the combustion device 4 includes a fuel pipe 41, a second annular tube 42 and a plurality of burner heads 43. The second annular tube 42 is arranged along the circumference of the furnace body and is provided between the inner furnace body 1 and the outer furnace body 2. The second annular tube 42 has a fuel cavity for accommodating fuel. The fuel pipe 41 passes through the outer furnace body 2, and one end is connected to the second annular tube 42. The plurality of burner heads 43 are evenly arranged along the circumference of the second annular tube 42. The burner heads 43 pass through the inner furnace body 1 and extend to the gasification cavity 111. One end of the burner head 43 facing the gasification cavity 111 forms the above-mentioned combustion port.

[0079] Fuel can be injected into the fuel cavity through the fuel pipe 41, and the fuel can be heated to burn. The flame generated by the combustion of the fuel can be sprayed into the gasification cavity 111 through multiple burner heads 43, which can heat the gasification cavity 111, increase the temperature in the gasification cavity 111, reach and maintain the temperature required for the coal slurry to undergo a gasification reaction, and make the coal slurry burn and continue to undergo a gasification reaction. Since the multiple burner heads 43 are evenly distributed along the circumference of the gasification cavity 111, heat is evenly sprayed into the gasification cavity 111 through the multiple burner heads 43, making the heat distribution in the gasification cavity 111 more uniform, which can improve the combustion effect of the coal slurry, thereby improving the efficiency of the gasification reaction.

[0080] As an example, Figure 2 and Figure 5 As shown, the combustion device 4 is arranged between the two air intake devices 5 in the up and down direction, and the second annular tube 42 is arranged between the inner furnace body 1 and the outer furnace body 2 along the radial direction of the furnace body, and is fixedly connected to the inner furnace body 1 and the outer furnace body 2. The interior of the second annular tube 42 has an annular fuel cavity, and the fuel can be injected into the fuel cavity through the fuel pipe 41. The fuel burns in the fuel cavity, and the heat generated can be evenly sprayed into the gasification cavity 111 through multiple combustion heads 43, providing high temperature conditions for the gasification reaction of the coal slurry.

[0081] In some embodiments, Figure 6 and Figure 7As shown, the furnace body also includes a cooling section 12, which is arranged at the lower side of the gasification section 11. The gasifier 100 also includes a cooling device 6, and the cooling section 12 is arranged at the lower side of the gasification section 11. The cooling device 6 includes a cooling cylinder 61, and the cooling cylinder 61 is sleeved on the cooling section 12. The cooling cylinder 61 has a cooling cavity 611. The cavity wall of the cooling cavity 611 has a first inlet for injecting cooling water and a first outlet for discharging cooling water. The first inlet is arranged on the upper side of the first outlet. The first inlet, the cooling cavity 611 and the first outlet form a first cooling channel.

[0082] Cooling water is injected into the first cooling channel through the first inlet, and the cooling water fills the cooling cavity 611, and the cooling water flows around the cooling section 12, so that the temperature in the cooling section 12 is relatively low; the coal ash produced by the combustion of the coal slurry passes through the cooling section 12 during the discharge process, and its heat is transferred to the cooling water through the side wall of the cooling section 12, which can realize the cooling of the coal ash and increase the temperature of the cooling water at the same time. When the cooling water temperature rises to the preset water temperature, the cooling water can be discharged through the second outlet, and then the cooling water can be replaced. The discharged hot water can be collected in the hot water tank for recycling again.

[0083] Specifically, Figure 2 and Figure 6 As shown, the cooling cylinder 61 is sleeved on the outside of the cooling section 12, and the inner wall of the cooling cylinder 61 fits with the outer wall of the cooling section 12, which is more conducive to the heat transfer between the coal slag and the cooling water.

[0084] In some embodiments, Figure 6 and Figure 7 As shown, the cooling cylinder 61 also has a first cavity 612 arranged on the upper side of the cooling cavity 611 and a second cavity 613 arranged on the lower side of the cooling cavity 611, the cavity wall of the first cavity 612 has a second inlet for injecting cooling water, and the cavity wall of the second cavity 613 has a second outlet for discharging cooling water; the cooling device 6 also includes a plurality of cooling pipes 62, the cooling pipes 62 are arranged in the cooling cavity 611, and the plurality of cooling pipes 62 are arranged along the circumference of the cooling cylinder 61, the upper end of the cooling pipe 62 passes through the upper cavity wall of the second cavity 613 and is connected to the first cavity 612, and the lower end passes through the lower cavity wall of the second cavity 613 and is connected to the second cavity 613, the second inlet, the first cavity 612, the inner cavity of the cooling pipe 62, the second cavity 613 and the second outlet form a second cooling channel, and the second cooling channel is not connected to the first cooling channel.

[0085] Multiple cooling pipes 62 are evenly distributed along the circumference of the cooling section 12. Cooling water is injected into the second cooling channel through the second inlet, so that the cooling water can fill the multiple cooling pipes 62. The cooling water in the multiple cooling pipes 62 can exchange heat with the coal ash, reduce the temperature of the coal ash, and increase the temperature of the cooling water in the cooling pipes 62. When the water temperature in the cooling pipes 62 rises to the preset water temperature, the cooling water in the cooling pipes 62 can be discharged to the water tank through the second outlet for storage, so as to realize the recycling and reuse of the cooling water.

[0086] At the same time, cooling water is filled into the cooling chamber 611 through the first inlet. Since the cooling pipe 62 is arranged in the cooling chamber 611, the cooling water in the cooling pipe 62 and the cooling water in the cooling chamber 611 can also exchange heat, so that the cooling water in the cooling pipe 62 and the cooling chamber 611 are heated more evenly.

[0087] In some embodiments, Figures 6 to 8 As shown, the cooling tube 62 is rotatable along the axis of the cooling cylinder 61, and the upper cavity wall and the lower cavity wall of the second cavity 613 respectively have a first make way groove 614 and a second make way groove 615 for the cooling tube 62 to rotate; a first rotating plate 621 blocked in the first make way groove 614 is provided in the first cavity 612, and a second rotating plate 622 blocked in the second make way groove 615 is provided in the second cavity 613, and both ends of the cooling tube 62 are respectively connected to the first rotating plate 621 and the second rotating plate 622; a driving plate 623 is connected to the upper side of the first rotating plate 621, and the driving plate 623 and the second inlet are arranged at the same height, and a second water inlet pipe 65 is connected to the outer side of the cooling cylinder 61, and the second water inlet pipe 65 is connected to the second inlet, and the second water inlet pipe 65 extends along the tangent direction of the cooling cylinder 61, so as to use the cooling water injected into the first cavity 612 by the second water inlet pipe 65 to drive the driving plate 623 to rotate.

[0088] Cooling water is injected into the first cavity 612 through the second inlet, and the cooling water impacts the driving plate 623 and pushes the driving plate 623 to rotate, and then drives the multiple cooling tubes 62 to rotate around the axis of the cooling tube 61 through the first rotating plate 621. The multiple cooling tubes 62 move in the cooling cavity 611, and the cooling water in the cooling cavity 611 can be stirred to make the cooling water in the cooling cavity 611 evenly mixed, so that the cooling water in the cooling cavity 611 can be fully heated and heated more evenly, so that it can be recycled and reused.

[0089] In addition, the first rotating plate 621 and the second rotating plate 622 respectively block the first and second make way grooves 614 and 615 to prevent leakage between the first and second cavities 612 and 613 and the cooling cavity 611, thereby ensuring that the first cooling channel and the second cooling channel are not connected to each other.

[0090] Alternatively, if Figure 6As shown, the outer side of the cooling cylinder 61 is connected with a first water inlet pipe 63, a first water outlet pipe 64, a second water inlet pipe 65 and a second water outlet pipe 66, the first water inlet pipe 63 is connected to the first inlet, the first water outlet pipe 64 is connected to the first water outlet, the second water inlet pipe 65 is connected to the second inlet, and the second water outlet pipe 66 is connected to the second outlet.

[0091] Optionally, there are multiple drive plates 623 , and the multiple drive plates 623 are evenly distributed along the circumference of the cooling cylinder 61 .

[0092] Therefore, when cooling water is injected into the first cavity 612 through the second inlet, the cooling water can impact any one of the driving plates 623 , thereby driving the plurality of cooling tubes 62 to rotate, so as to achieve stirring of the cooling water in the cooling cavity 611 .

[0093] As an example, Figures 6 to 8 As shown, the first give way groove 614 passes through the cavity wall between the first cavity 612 and the cooling cavity 611, and the second give way groove 615 passes through the cavity wall between the second cavity 613 and the cooling cavity 611. The first give way groove 614 and the second give way groove 615 both extend in the circumferential direction of the cooling tube 61 in a circular ring shape; the upper end of the cooling tube 62 passes through the first give way groove 614 and is connected to the first rotating plate 621, and the first rotating plate 621 fits the lower cavity wall of the first cavity 612 to block the first give way groove 614, and the lower end of the cooling tube 62 passes through the second give way groove 615 and is connected to the second rotating plate 622, and the second rotating plate 622 fits the upper cavity wall of the second cavity 613 to block the second give way groove 615.

[0094] The driving plate 623 is in the shape of a rectangular plate and is vertically arranged on the upper side of the first rotating plate 621. The radial dimension of the driving plate 623 along the cooling cylinder 61 matches the radial dimension of the first cavity 612 along the cooling cylinder 61. Specifically, the gap between the two side surfaces of the driving plate 623 radially spaced apart along the cooling cylinder 61 and the two cavity walls of the first cavity 612 radially spaced apart along the cooling cylinder 61 is small, so as to prevent the driving plate 623 from rubbing against the cavity wall of the first cavity 612 during rotation, and at the same time, maximize the contact area between the cooling water entering from the second inlet and the driving plate 623, so as to drive the driving plate 623 to rotate through the impact force of the cooling water, thereby driving the multiple cooling tubes 62 to rotate along the axis of the cooling cylinder 61.

[0095] A method for using a gasifier 100, using the gasifier 100 of any of the above embodiments, the method for using the gasifier 100 comprises the following steps:

[0096] Injecting heat into the gasification chamber 111 through the combustion port of the fuel device, so that the temperature of the gasification chamber 111 rises and is maintained at a preset temperature;

[0097] Injecting coal slurry into the gasification chamber 111 through the feed port 311 of the feed device 3;

[0098] The gasifying agent is injected into the gasification chamber 111 through the multiple injection pipes 54 of the air intake device 5 .

[0099] The gasifier 100 of the embodiment of the present invention injects gasifying agent into the gasification chamber 111 through the multiple injection pipes 54 of the air inlet device 5 during the gasification reaction. Since the multiple injection pipes 54 are evenly distributed along the circumference of the furnace body, the gasifying agent is simultaneously injected into the gasification chamber 111 by the multiple injection pipes 54, which can improve the uniformity of the distribution of the gasifying agent in the gasification chamber 111, so that the gasifying agent and the coal slurry are evenly mixed, the gasification reaction is more complete, and thus the gasification reaction efficiency is improved.

[0100] As an example, the method for using the gasifier 100 includes the following steps:

[0101] S1: injecting fuel into the second annular tube 42 through the fuel pipe 41, the fuel burns in the second annular tube 42, and the heat generated by the fuel combustion is evenly sprayed into the gasification chamber 111 through the multiple burner heads 43, so that the temperature of the gasification chamber 111 rises and is maintained at a preset temperature;

[0102] S2: When the temperature of the gasification chamber 111 rises to a preset temperature, the coal slurry is injected into the first annular tube 31 through the feed pipe 32, and the coal slurry evenly enters the gasification chamber 111 through the multiple feed ports 311 on the first annular tube 31;

[0103] S3: The gasifying agent is uniformly injected into the gasification chamber 111 through the air intake device 5, so that the coal slurry and the gasifying agent are uniformly mixed, the coal slurry burns and a gasification reaction occurs, the combustible gas generated by the coal slurry gasification reaction is transported upward and discharged through the exhaust pipe 13, and the coal slag generated by the combustion is transported downward and discharged through the slag discharge pipe 14.

[0104] In the above step S3, the gasifying agent is injected into the gasification chamber 111 through the air intake device 5, specifically including injecting the gasifying agent into the annular chamber 51 through the air intake pipe 55, and the gasifying agent is sprayed into the gasification chamber 111 through the multiple injection pipes 54. Since the injection pipes 54 are arranged obliquely, under the reaction force generated by the injection pipes 54 spraying the gasifying agent, the multiple injection pipes 54 and the rotating ring 53 rotate along the circumferential direction of the gasification chamber 111, so that the injection pipes 54 spray the gasifying agent during the rotation process, thereby further improving the uniformity of the distribution of the gasifying agent in the gasification chamber 111.

[0105] In the above step S3, the coal ash produced by combustion is transported downward and discharged through the slag discharge pipe 14 before being cooled by the cooling section 12, specifically including: injecting cooling water into the first cooling channel through the first water inlet pipe 63 so that the cooling water fills the cooling chamber 611, and the water in the cooling chamber 611 can exchange heat with the coal ash passing through the cooling section 12, so that the coal ash is cooled, and at the same time the water temperature in the cooling chamber 611 increases; injecting cooling water into the first chamber 612 through the second water inlet pipe 65, the cooling water first impacts the driving plate 623, so that the driving plate 623 and the multiple cooling pipes 62 rotate, and the water in the cooling chamber 611 can be stirred, so that the water in the cooling chamber 611 is evenly heated, and at the same time, the cooling water fills the second cooling channel, and the water in the second cooling channel can also exchange heat with the water in the first cooling channel to ensure that the cooling water in the second cooling channel is evenly heated.

[0106] When the water temperature in the cooling chamber 611 rises to the preset water temperature, the first water outlet pipe 64 is opened to discharge the water in the cooling chamber 611 to achieve hot water recycling. Similarly, when the water temperature in the cooling pipe 62 rises to the preset water temperature, the second water outlet pipe 66 is opened to discharge the water in the cooling chamber 611 to achieve hot water recycling.

[0107] In actual production, technicians in this field can adjust the first water inlet pipe 63 and the first water outlet pipe 64 to a normally open state, and / or adjust the second water inlet pipe 65 and the second water outlet pipe 66 to a normally open state according to the rising speed of the water temperature, that is, the water in the first cooling channel and / or the second cooling channel is in a flowing state, thereby improving the cooling effect on the coal slag.

[0108] It is understandable that the above description of the gasifier 100 is also applicable to the method of using the gasifier 100, and will not be repeated here.

[0109] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A gasifier, characterized in that: include: A furnace body, the furnace body comprising a gasification section, the gasification section having a gasification cavity; A feeding device, the feeding device is connected to the furnace body, and the feeding device has a feeding port for injecting coal slurry into the gasification chamber; A combustion device, the combustion device is connected to the furnace body, and the combustion device has a combustion port for injecting heat into the gasification chamber; An air intake device, wherein the air intake device includes an air intake ring and a plurality of injection pipes, wherein the air intake ring is connected to the furnace body, the air intake ring is arranged along the circumference of the furnace body, the air intake ring has an annular cavity for injecting a gasifying agent, the plurality of injection pipes are evenly distributed along the circumference of the air intake ring and connected to the air intake ring, and the injection pipes are arranged toward the gasification cavity.

2. The gasifier according to claim 1, characterized in that: The furnace body comprises an inner furnace body and an outer furnace body, the inner furnace body encloses the gasification cavity, the outer furnace body is sleeved on the inner furnace body and arranged at a distance from the inner furnace body, and the outer furnace body is connected to the inner furnace body; The air intake ring comprises a fixed ring and a rotating ring, wherein the fixed ring is connected to the outer furnace body, the rotating ring is rotatably connected to the inner furnace body, the rotating ring and the fixed ring form the annular cavity, and the fixed ring is connected to an air intake pipe for injecting a gasifying agent into the gas cavity; The injection pipe is connected to the rotating ring, and the injection pipe extends obliquely toward the inside of the rotating ring, so that the reaction force generated when the gasifying agent is sprayed out through the injection pipe pushes the rotating ring to rotate relative to the fixed ring.

3. The gasifier according to claim 2, characterized in that: The inner furnace body has a mounting groove, the mounting groove divides the inner furnace body into a first section and a second section arranged sequentially from top to bottom, the rotating ring is rotatably arranged in the mounting groove, and a first rolling body is arranged between the rotating ring and the inner furnace body; and / or The rotating ring has an annular groove, and the annular groove has an annular notch opening arranged toward the outer furnace body. The fixed ring blocks the annular notch opening to form the air cavity. A second rolling body is arranged between the rotating ring and the fixed ring.

4. The gasifier according to claim 3, characterized in that: The rotating ring comprises a first groove body arranged toward the first section and a second groove body arranged toward the second section, the lower side of the first section is arranged in the first groove body, the upper side of the second section is arranged in the second groove body, and the first rolling body is arranged in both the first groove body and the second groove body; The annular groove has an upper groove wall and a lower groove wall which are arranged relatively in the up-down direction, the fixed ring has a third groove body arranged upward and a fourth groove body arranged downward, the upper groove wall is arranged in the third groove body, the lower groove wall is arranged in the fourth groove body, and the second rolling body is arranged in both the third groove body and the fourth groove body.

5. The gasifier according to claim 1, characterized in that: The feeding device includes a first annular tube and a feeding pipe. The first annular tube is arranged in the gasification chamber and along the circumference of the furnace body. The first annular tube has a plurality of feeding ports, which are evenly arranged along the circumference of the first annular tube. The feeding pipe passes through the furnace wall of the furnace body and one end is connected to the first annular tube.

6. The gasifier according to claim 2, characterized in that: The combustion device comprises a fuel pipe, a second annular pipe and a plurality of combustion heads, wherein the second annular pipe is arranged along the circumference of the furnace body and is provided between the inner furnace body and the outer furnace body, the second annular pipe has a fuel cavity for accommodating fuel, the fuel pipe passes through the outer furnace body, and one end of the fuel pipe is connected to the second annular pipe; The plurality of burner heads are evenly arranged along the circumference of the second annular tube, and the burner heads extend through the inner furnace body to the gasification chamber. One end of the burner head facing the gasification chamber forms the burner port.

7. The gasifier according to any one of claims 1 to 6, characterized in that: The furnace body also includes a cooling section, which is arranged at the lower side of the gasification section. The gasification furnace also includes a cooling device, which includes a cooling cylinder, which is sleeved on the cooling section. The cooling cylinder has a cooling cavity, and the cavity wall of the cooling cavity has a first inlet for injecting cooling water and a first outlet for discharging cooling water. The first inlet is arranged on the upper side of the first outlet. The first inlet, the cooling cavity and the first outlet form a first cooling channel.

8. The gasifier according to claim 7, characterized in that: The cooling cylinder also has a first cavity provided at the upper side of the cooling cavity and a second cavity provided at the lower side of the cooling cavity, the cavity wall of the first cavity has a second inlet for injecting cooling water, and the cavity wall of the second cavity has a second outlet for discharging cooling water; The cooling device also includes a plurality of cooling pipes, which are provided in the cooling cavity. The plurality of cooling pipes are arranged along the circumference of the cooling cylinder. The upper ends of the cooling pipes pass through the upper cavity wall of the second cavity and are connected to the first cavity, and the lower ends of the cooling pipes pass through the lower cavity wall of the second cavity and are connected to the second cavity. The second inlet, the first cavity, the inner cavity of the cooling pipe, the second cavity and the second outlet form a second cooling channel, and the second cooling channel is not connected to the first cooling channel.

9. The gasifier according to claim 8, characterized in that: The cooling pipe is rotatable along the axis of the cooling cylinder, the upper cavity wall and the lower cavity wall of the second cavity respectively have a first give way groove and a second give way groove for the cooling pipe to rotate, the first cavity is provided with a first rotating plate blocked with the first give way groove, the second cavity is provided with a second rotating plate blocked with the second give way groove, and both ends of the cooling pipe are respectively connected to the first rotating plate and the second rotating plate; A driving plate is connected to the upper side of the first rotating plate, and the driving plate and the second inlet are arranged at the same height. A second water inlet pipe is connected to the outer side of the cooling cylinder, and the second water inlet pipe is communicated with the second inlet. The second water inlet pipe extends along the tangential direction of the cooling cylinder to utilize the cooling water injected into the first cavity by the second water inlet pipe to drive the driving plate to rotate.

10. A method for using a gasifier, characterized in that: The gasifier according to any one of claims 1 to 9 is used, and the method for using the gasifier comprises the following steps: Injecting heat into the gasification chamber through the combustion port of the fuel device so that the temperature of the gasification chamber rises and is maintained at a preset temperature; injecting coal slurry into the gasification chamber through the feed port of the feed device; The gasifying agent is injected into the gasification chamber through the plurality of injection pipes of the air intake device.

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