Gasification furnace with liquid oxygen pump

Abstract

The utility model belongs to the technical field of gasification furnaces, and provides a gasification furnace with a liquid oxygen pump, which comprises a furnace body, the furnace body is communicated with a raw gas outlet pipe, the end part of the raw gas outlet pipe, which is positioned in the furnace body, is rotatably provided with a coaxial outlet cover, and the furnace body is fixedly provided with a high-pressure water pump. The high-pressure water pump is communicated with a cleaning pipeline extending into the outlet cover, the end of the cleaning pipeline is communicated with a flushing nozzle for flushing the inner wall of the outlet cover, and a rotating shaft driven by water flow is rotationally installed at the end of the cleaning pipeline. The technical problems that in the prior art, cleaning dead corners exist, dust residues exist in a conical connector, and the cleaning effect is reduced are solved. Compared with the prior art, the cleaning device has the advantages that water flow can be sprayed to all positions on the inner wall of the outlet cover through the flushing spray head, dust on the inner wall of the outlet cover is guaranteed to be completely cleaned, dust residues in the outlet cover are avoided, and the cleaning effect of the outlet cover is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gasifiers, and in particular relates to a gasifier equipped with a liquid oxygen pump. Background Art

[0002] During the gasification process of the fixed bed gasifier, some dust will leave the gasifier with the gas flow through the crude gas outlet of the gasifier during the distillation of the volatile matter in the coal. Under normal temperature and pressure, the corresponding air flow velocity can normally carry the volatile matter and fine dust out of the crude gas outlet of the gasifier, but in actual working conditions, the air flow velocity at the crude gas outlet will decrease, and some fine dust will settle. As the operation time of the gasifier increases, the deposits on the wall of the crude gas outlet pipe of the gasifier accumulate more and more, the pressure difference increases, and the effective passage area of ​​the gas is continuously reduced, and eventually even the crude gas outlet will be blocked, affecting the long-term operation of the gasifier.

[0003] At present, the fixed-bed gasifiers in operation in China can only be passively stopped when the outlet is blocked, and then the pipelines or flanges connected to the washing cooler are disassembled, first softened with steam, and then the sediments are manually cleaned. The cleaning process is very cumbersome. In response to the above technical problems, the applicant has retrieved some prior arts, such as the Chinese patent with patent publication number CN105838452B. When in use, the conical interface is flushed by water flow, and the high-pressure cleaning water flows out through multiple holes on the annular tubular body for cleaning. However, there will be gaps between the holes, and high-pressure water flow will cause cleaning dead corners when flushing, resulting in dust on the conical interface that cannot be cleaned, thereby reducing the cleaning effect of the conical interface. Utility Model Content

[0004] The utility model aims to provide a gasifier with a liquid oxygen pump, aiming to solve the technical problem in the prior art that there are cleaning dead corners, which leads to dust residue in the conical interface and reduces the cleaning effect.

[0005] The utility model is implemented as follows: a gasifier equipped with a liquid oxygen pump comprises a furnace body, a crude gas outlet pipe is connected to the furnace body, a coaxially arranged outlet cover is rotatably mounted on the end of the crude gas outlet pipe located in the furnace body, a high-pressure water pump is fixedly mounted on the furnace body, the high-pressure water pump is connected to a cleaning pipe extending into the outlet cover, a cleaning pipe end is connected to a flushing nozzle for flushing the inner wall of the outlet cover, a rotating shaft driven by water flow is rotatably mounted on the end of the cleaning pipe, and the rotating shaft drives the outlet cover to rotate.

[0006] Further technical solution: the furnace body is connected to a liquid oxygen pump, the liquid oxygen pump is connected to an oxygen inlet pipeline, the oxygen inlet pipeline is connected to the furnace body, and an oxygen network pressure gauge and a high-pressure oxygen vent valve are respectively provided on the oxygen inlet pipeline.

[0007] Further technical solution: the cleaning pipe is coaxially arranged with the outlet housing and the end of the cleaning pipe extends into the outlet housing, and the water flow sprayed by the flushing nozzle rushes toward the inner wall of the outlet housing.

[0008] Further technical solution: one end of the rotating shaft extends into the cleaning pipe, and multiple groups of blades located in the cleaning pipe are fixedly installed on the rotating shaft. The end of the rotating shaft located outside the cleaning pipe is fixedly installed with a second gear ring through a bracket, and the second gear ring is meshed with the first gear ring fixedly installed in the outlet cover.

[0009] Further technical solution: a connecting ring is fixedly mounted on the bracket, the connecting ring is connected to a plurality of groups of atomizing nozzles distributed in a circular array around the axis of the connecting ring, and the connecting ring is connected to the cleaning pipeline.

[0010] Further technical solution: the reaction force of the atomizing nozzle spraying water pushes the connecting ring to rotate in the same direction as the opposite direction of the connecting ring itself rotating.

[0011] Further technical solution: a water channel is opened and closed in the rotating shaft, the water channel is connected with the cleaning pipeline, and the water channel is connected with the connecting ring through the pipeline.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. Water flows through the flushing nozzle and is sprayed onto the inner wall of the outlet mask. Then the water flows along the inner wall of the outlet mask for flushing, thereby cleaning the dust attached to the inner wall of the outlet mask. At the same time, the outlet mask rotates so that the flushing nozzle can spray water to various positions on the inner wall of the outlet mask, thereby ensuring that all the dust on the inner wall of the outlet mask is cleaned, thereby avoiding dust residue in the outlet mask and improving the cleaning effect of the outlet mask.

[0014] 2. Make the gas entering the crude gas outlet pipe contact with the water mist, so that the gas is settled by the water mist, further reducing the dust impurity content in the gas, reducing the dust accumulation in the crude gas outlet pipe, and reducing the probability of blockage of the crude gas outlet pipe.

[0015] 3. By detecting the pressure of the oxygen network pipe, the opening state of the high-pressure oxygen vent valve is controlled, so that the liquid oxygen pump is interlocked with the gasifier, avoiding overpressure cavitation of the liquid oxygen pump caused by the gasifier jumping, and protecting the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the outlet mask in the utility model.

[0018] Figure 3 It is a schematic cross-sectional view of the outlet cover of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the cleaning pipeline in the utility model.

[0020] Figure 5 for Figure 3 A magnified schematic diagram of the A1 region in the middle.

[0021] In the attached figure: 1. furnace body; 2. liquid oxygen pump; 3. oxygen inlet pipe; 4. oxygen network pressure gauge; 5. high-pressure oxygen vent valve; 6. raw gas outlet pipe; 7. outlet cover; 8. first gear ring; 9. cleaning pipe; 10. rotating shaft; 11. blades; 12. bracket; 13. second gear ring; 14. connecting ring; 15. atomizing nozzle; 16. water channel; 17. flushing nozzle; 18. high-pressure water pump. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1-Figure 5 As shown, a gasifier with a liquid oxygen pump provided by the utility model comprises a furnace body 1, the furnace body 1 is connected with a crude gas outlet pipe 6, the end of the crude gas outlet pipe 6 located in the furnace body 1 is rotatably mounted with a coaxially arranged outlet cover 7, the outlet cover 7 is a trumpet-shaped structure, a high-pressure water pump 18 is fixedly mounted on the furnace body 1, the high-pressure water pump 18 is connected with a cleaning pipe 9 extending into the outlet cover 7, the end of the cleaning pipe 9 is connected with a flushing nozzle 17 for flushing the inner wall of the outlet cover 7, the cleaning pipe 9 is coaxially arranged with the outlet cover 7 and the end of the cleaning pipe 9 extends into the outlet cover 7, the water flow sprayed by the flushing nozzle 17 rushes toward the inner wall of the outlet cover 7, the end of the cleaning pipe 9 is rotatably mounted with a rotating shaft 10 driven by water flow, and the rotating shaft 10 drives the outlet cover 7 to rotate.

[0025] When this embodiment is actually applied, the fine dust particles generated during the operation of the furnace body 1 are normally carried out from the raw gas outlet pipe 6 by the airflow, and the contact area with the airflow is increased by the outlet cover 7, so that a large amount of fine dust particles adhere to the outlet cover 7, and clean water is transported to the cleaning pipe 9 by the high-pressure water pump 18. The rapid flow of water in the cleaning pipe 9 will drive the rotating shaft 10 to rotate, so that the rotating shaft 10 synchronously drives the outlet cover 7 to rotate, and the water flow is sprayed onto the inner wall of the outlet cover 7 through the flushing nozzle 17, and then the water flow is flushed along the inner wall of the outlet cover 7, so as to realize the cleaning of the dust attached to the inner wall of the outlet cover 7, and at the same time, the rotation of the outlet cover 7 enables the flushing nozzle 17 to spray water to various positions on the inner wall of the outlet cover 7, thereby ensuring that all the dust on the inner wall of the outlet cover 7 is cleaned, thereby avoiding the residual dust in the outlet cover 7 and improving the cleaning effect of the outlet cover 7.

[0026] like Figure 1 As shown, a gasification furnace with a liquid oxygen pump provided by the utility model, the furnace body 1 is connected to the liquid oxygen pump 2, the liquid oxygen pump 2 is connected to the oxygen inlet pipeline 3, the oxygen inlet pipeline 3 is connected to the furnace body 1, and the oxygen inlet pipeline 3 is respectively provided with an oxygen network pressure gauge 4 and a high-pressure oxygen vent valve 5.

[0027] In actual application of this embodiment, liquid oxygen is transported to the furnace body 1 through the liquid oxygen pump 2. When the furnace body 1 jumps out of service during operation, the oxygen network pipe pressure will increase. When the oxygen network pipe pressure gauge 4 detects that the oxygen network pipe pressure increases to a set threshold, the oxygen network pipe pressure gauge 4 feeds back to the control system and controls the high-pressure oxygen vent valve 5 to open through the control system, thereby releasing the pressure in the oxygen network pipe, so that the pressure of the oxygen network pipe is stable, avoiding cavitation of the liquid oxygen pump 2.

[0028] like Figure 2-Figure 5 As shown, a gasifier with a liquid oxygen pump provided by the utility model, one end of the rotating shaft 10 extends into the cleaning pipe 9, and a plurality of blades 11 located in the cleaning pipe 9 are fixedly installed on the rotating shaft 10, and a second gear ring 13 is fixedly installed at one end of the rotating shaft 10 located outside the cleaning pipe 9 through a bracket 12, and the second gear ring 13 is meshed with a first gear ring 8 fixedly installed in the outlet cover 7.

[0029] Specifically, a connecting ring 14 is fixedly mounted on the bracket 12 , and the connecting ring 14 is connected to a plurality of groups of atomizing nozzles 15 distributed in a circular array around the axis of the connecting ring 14 . The connecting ring 14 is connected to the cleaning pipeline 9 .

[0030] Specifically, the reaction force of the water sprayed by the atomizing nozzle 15 pushes the connecting ring 14 to rotate in the same direction as the opposite direction of the connecting ring 14 itself.

[0031] Specifically, a water channel 16 is opened and closed in the rotating shaft 10 , and the water channel 16 is connected to the cleaning pipe 9 , and the water channel 16 is connected to the connecting ring 14 through a pipe.

[0032] When the present embodiment is actually applied, when the water flows in the cleaning pipe 9, it will push the rotating shaft 10 to rotate through the blades 11, and then the rotating shaft 10 can drive the outlet cover 7 to rotate through the meshing first gear ring 8 and the second gear ring 13. The water flow in the cleaning pipe 9 can enter the waterway 16 and then enter the connecting ring 14 through the pipe. Finally, the water flow is atomized and sprayed out through multiple groups of atomizing nozzles 15. The reaction force when the water flow is sprayed out from the atomizing nozzles 15 further pushes the rotating shaft 10 to rotate. The water mist sprayed by the multiple groups of atomizing nozzles 15 blocks the smaller opening of the outlet cover 7, so that the gas entering the crude gas outlet pipe 6 is in contact with the water mist, so that the gas is precipitated by the water mist, further reducing the dust impurity content in the gas, reducing the dust accumulation in the crude gas outlet pipe 6, and reducing the probability of blockage of the crude gas outlet pipe 6. The settled dust falls on the inner wall of the outlet cover 7 and is rinsed clean by the flushing nozzle 17.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A gasification furnace equipped with a liquid oxygen pump, comprising a furnace body (1), the furnace body (1) being connected to a crude gas outlet pipe (6), characterized in that: The end of the crude gas outlet pipe (6) located in the furnace body (1) is rotatably mounted with a coaxially arranged outlet housing (7); a high-pressure water pump (18) is fixedly mounted on the furnace body (1); the high-pressure water pump (18) is connected to a cleaning pipe (9) extending into the outlet housing (7); the end of the cleaning pipe (9) is connected to a flushing nozzle (17) for flushing the inner wall of the outlet housing (7); a rotating shaft (10) driven by water flow is rotatably mounted on the end of the cleaning pipe (9); the rotating shaft (10) drives the outlet housing (7) to rotate.

2. The gasifier with a liquid oxygen pump according to claim 1, characterized in that: The furnace body (1) is connected to a liquid oxygen pump (2), the liquid oxygen pump (2) is connected to an oxygen inlet pipeline (3), the oxygen inlet pipeline (3) is connected to the furnace body (1), and an oxygen network pressure gauge (4) and a high-pressure oxygen vent valve (5) are respectively provided on the oxygen inlet pipeline (3).

3. The gasifier with a liquid oxygen pump according to claim 1, characterized in that: The cleaning pipe (9) is coaxially arranged with the outlet housing (7), and the end of the cleaning pipe (9) extends into the outlet housing (7), so that the water flow sprayed by the flushing nozzle (17) rushes toward the inner wall of the outlet housing (7).

4. The gasifier with a liquid oxygen pump according to claim 1, characterized in that: One end of the rotating shaft (10) extends into the cleaning pipe (9), and a plurality of blades (11) located in the cleaning pipe (9) are fixedly mounted on the rotating shaft (10). A second gear ring (13) is fixedly mounted on the end of the rotating shaft (10) located outside the cleaning pipe (9) through a bracket (12), and the second gear ring (13) meshes with a first gear ring (8) fixedly mounted in the outlet cover (7).

5. The gasifier equipped with a liquid oxygen pump according to claim 4, characterized in that: A connecting ring (14) is fixedly mounted on the bracket (12), and the connecting ring (14) is connected to a plurality of groups of atomizing nozzles (15) distributed in a circular array around the axis of the connecting ring (14). The connecting ring (14) is connected to the cleaning pipeline (9).

6. The gasifier equipped with a liquid oxygen pump according to claim 5, characterized in that: The reaction force of the water sprayed by the atomizing nozzle (15) pushes the connecting ring (14) to rotate in the same direction as the opposite direction of the connecting ring (14) itself rotating.

7. The gasifier equipped with a liquid oxygen pump according to claim 5, characterized in that: A water channel (16) is opened and closed in the rotating shaft (10), the water channel (16) is connected to the cleaning pipeline (9), and the water channel (16) is connected to the connecting ring (14) through a pipeline.

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