CN209741077U - Return valve, cyclone return equipment and fluidized bed system - Google Patents
Return valve, cyclone return equipment and fluidized bed system Download PDFInfo
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- CN209741077U CN209741077U CN201920276921.9U CN201920276921U CN209741077U CN 209741077 U CN209741077 U CN 209741077U CN 201920276921 U CN201920276921 U CN 201920276921U CN 209741077 U CN209741077 U CN 209741077U
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Abstract
The utility model discloses a return material valve, whirlwind return material equipment and fluidized bed system relates to return material valve field for gas in the gasifier is controlled better during the baker gets into cyclone through the return material valve, and promotes the return material when the gasifier operation. This material returning valve includes: the first deposition tube is provided with a feeding port and a discharging port; one end of the conduction pipe is communicated with the discharge hole of the first deposition pipe; the feeding port of the second deposition tube is communicated with the other end of the conduction tube, and the air inlet of the second deposition tube and the discharge port of the second deposition tube are respectively positioned at two opposite ends of the second deposition tube; and the first air blowing pipeline is communicated with the air inlet of the second deposition tube and is configured to blow air from the air inlet of the second deposition tube to the discharge hole of the second deposition tube. Through the scheme, the material seal can be formed in the dipleg of the cyclone material returning equipment, the material returning is promoted, and reverse air leakage is prevented.
Description
Technical Field
the utility model relates to a return valve field especially relates to a return valve, whirlwind return equipment and fluidized bed system.
background
The cyclone material returning device is an important component of the circulating fluidized bed coal gasification system. At present, the cyclone material returning equipment comprises a cyclone separator communicated with a product gas outlet of the gasification furnace, a dipleg communicated with the bottom of the cyclone separator, and a material returning valve communicated with a material outlet of the dipleg, wherein a material outlet of the material returning valve is communicated with a material returning and feeding port of the fluidized bed. During actual work, dust-containing flue gas from the fluidized bed enters the cyclone separator through the product gas outlet and is subjected to cyclone separation, and materials obtained through separation sequentially pass through the dipleg and the material returning valve and return to the fluidized bed from the material inlet of the fluidized bed.
in the prior art, the return valve typically includes a mechanical return valve and a non-mechanical return valve. Wherein, mechanical material return valve is provided with the flashboard, and when the flashboard was opened, the material can be followed material return valve and got into the reacting furnace, and when the flashboard was closed, the flashboard separated dipleg and gasifier. However, when the shutter is opened, material may enter the gap between the shutter and the housing of the return valve, which may cause the shutter to not close completely, thereby allowing gas to enter the cyclone from the return valve.
in the non-mechanical return valve, although the material can be used to form a gas seal, in the initial stage of the reaction, when no material is deposited in the return valve, the hot gas from the gasification furnace directly enters the return valve and enters the cyclone separator through the return valve.
it can be seen that in the prior art, gas in the gasification furnace easily enters the cyclone separator from the material returning valve, so that the normal operation of the cyclone separator is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a return valve, whirlwind return equipment and fluidized bed system for gas in the gasifier gets into cyclone through the return valve better during the baker, and promotes the returning charge when the gasifier operation.
in order to achieve the above object, the present invention provides the following technical solutions:
The utility model discloses a first aspect provides a material returning valve, and this material returning valve includes: the first deposition tube is provided with a feeding port and a discharging port; one end of the conduction pipe is communicated with the discharge hole of the first deposition pipe; the feeding port of the second deposition tube is communicated with the other end of the conduction tube, and the air inlet of the second deposition tube and the discharge port of the second deposition tube are respectively positioned at two opposite ends of the second deposition tube; and the first air blowing pipeline is communicated with the air inlet of the second deposition tube and is configured to blow air from the air inlet of the second deposition tube to the discharge hole of the second deposition tube.
Compared with the prior art, in the material returning valve provided by the utility model, the first deposition pipe is used for depositing the material from the cyclone separator, so that the material forms a material seal; the conduction pipe and the second deposition pipe are used for feeding the materials in the first deposition pipe into the gasification furnace. The air inlet of the second deposition tube and the discharge hole of the second deposition tube are respectively positioned at two opposite ends of the second deposition tube, and the first air blowing pipeline is configured to blow air from the air inlet of the second deposition tube to the discharge hole of the second deposition tube; like this, can be at the initial stage of gasifier operation, and before the material seal in first deposit pipe forms, through the gas output of adjusting first gas blowing pipeline, avoid the gas in the gasifier to get into the return valve from the discharge gate of second deposit pipe, and then effectively avoid the gas in the gasifier directly to get into cyclone through the return valve.
Optionally, the air inlet of the second deposition tube is located on one side of the feed inlet of the second deposition tube, which is far away from the discharge outlet of the second deposition tube.
Optionally, the material returning valve further comprises a gas distribution plate arranged inside the second deposition tube, the edge of the gas distribution plate is connected with the inner wall of the second deposition tube, and the gas distribution plate is located between the gas inlet of the second deposition tube and the material inlet of the second deposition tube; the air distribution plate is provided with a plurality of air distribution channels which penetrate through two opposite main surfaces of the air distribution plate.
Optionally, the plurality of air distribution channels include a central air distribution channel located in the central area of the air distribution plate, and a plurality of circles of surrounding air distribution channels surrounding the central air distribution channel, each circle of surrounding air distribution channels includes a plurality of surrounding air distribution channels arranged at intervals, and the diameter of the central air distribution channel is larger than that of the surrounding air distribution channels.
optionally, the gas distribution plate comprises: a first region, and a second region other than the first region; the first area is positioned on one side of the central gas distribution channel close to the conduction pipe, and the minimum distance from the boundary line of the first area and the second area to the axis of the second deposition pipe is 1/6-1/4 of the pipe diameter of the second deposition pipe; wherein, the air distribution channel surrounding the first area is obliquely arranged relative to the axis of the second deposition tube, and the air outlet surrounding the air distribution channel in the first area points to the axis of the second deposition tube; the surrounding gas distribution channel positioned in the second area is arranged parallel to the axis of the second deposition tube.
Optionally, the first deposition tube is further provided with an air inlet, the air inlet of the first deposition tube and the discharge hole of the first deposition tube are respectively located at two opposite ends of the first deposition tube, and the air inlet of the first deposition tube is located at one side of the feed hole of the first deposition tube, which is far away from the discharge hole of the first deposition tube; the material return valve also comprises a second blowing pipeline which is communicated with the air inlet of the first deposition pipe and is configured to blow air from the air inlet of the first deposition pipe to the discharge hole of the first deposition pipe.
Optionally, the material returning valve further comprises: the first air release pipeline is communicated with the first deposition pipe, and a communicated interface of the first air release pipeline and the first deposition pipe faces to a feeding port of the first deposition pipe and is configured to blow air to the feeding port of the first deposition pipe; the second air-release pipeline is communicated with the conduction pipe, and a connector communicated with the conduction pipe faces to one end of the conduction pipe communicated with the second deposition pipe and is configured to blow air to one end of the conduction pipe communicated with the second deposition pipe; and the third air release pipeline is communicated with the second deposition pipe, and a communicated interface of the third air release pipeline and the second deposition pipe is positioned at the bottom of the second deposition pipe and is configured to blow air to one side where the discharge hole of the second deposition pipe is positioned.
Optionally, the third gas releasing pipeline includes a main pipeline and a plurality of branch pipelines, one end of each branch pipeline is communicated with the main pipeline, the other end of each branch pipeline is communicated with the second deposition pipe, and the interfaces of the branch pipelines, which are communicated with the second deposition pipe, are arranged at intervals in sequence along the axial direction of the second deposition pipe.
Optionally, the first deposition tube and the second deposition tube are arranged in parallel, the conduction tube is arranged obliquely relative to the first deposition tube, and a corner at a connection position of the conduction tube and the first deposition tube is an obtuse angle.
Optionally, a corner at a connection of the conduction pipe and the first deposition pipe is smaller than a supplementary angle of a repose angle of the collected material.
The second aspect of the utility model provides a whirlwind returning charge equipment, this whirlwind returning charge equipment include at least one cyclone, with the dipleg of at least one cyclone's bottom intercommunication and return the material valve as above, wherein, the pan feeding mouth and the dipleg intercommunication of the first deposit pipe of return material valve, the discharge gate of the second deposit pipe of return material valve is whirlwind returning charge equipment's discharge gate.
The utility model provides a whirlwind returns material equipment's beneficial effect is the same with the beneficial effect of above-mentioned material valve that returns, and here is no longer repeated.
The third aspect of the utility model provides a fluidized bed system, this fluidized bed system include fluidized bed reactor and whirlwind returning charge equipment as above, wherein, whirlwind returning charge equipment's cyclone and fluidized bed reactor's discharge gate intercommunication, whirlwind returning charge equipment's discharge gate and fluidized bed reactor's returning charge mouth intercommunication.
the utility model provides a fluidized bed system's beneficial effect is the same with the beneficial effect of above-mentioned whirlwind returning charge equipment, and here is no longer repeated.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
Fig. 1 is a schematic diagram of the overall structure of a fluidized bed system according to some embodiments of the present invention;
Fig. 2 is a schematic structural view of a return valve in some embodiments of the present invention;
FIG. 3 is a schematic view of the installation of a gas panel according to some embodiments of the present invention;
Fig. 4 is a schematic structural view of a gas distribution plate according to some embodiments of the present invention.
Reference numerals:
11-a first deposition tube, 12-a second deposition tube,
13-a conducting tube, 21-a first blowing line,
21' -a first blow valve, 22-a second blow line,
22' -a second blowing valve, 23-a first degassing line,
23' -a first aeration valve, 24-a second aeration pipeline,
24' -a second aeration valve, 25-a third aeration pipeline,
25' -a third aeration valve, 251-a branch line,
3-gas distribution plate, 31-central gas distribution channel,
32-surrounding gas distribution channel, 4-cyclone separator,
5-dipleg and 6-gasification furnace.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
the embodiment of the utility model provides a material returning valve, please refer to fig. 1 and fig. 2, this material returning valve includes: a first deposition tube 11, a conduction tube 13, a second deposition tube 12 and a first gas blowing line 21. Wherein, a feeding port and a discharging port are arranged on the first deposition pipe 11; the second deposition pipe 12 is provided with a feeding port, a discharging port and an air inlet; one end of the conduction pipe 13 is communicated with the discharge hole of the first deposition pipe 11, and the feeding hole of the second deposition pipe 12 is communicated with the other end of the conduction pipe 13; the gas inlet of the second deposition tube 12 and the discharge hole of the second deposition tube 12 are respectively positioned at two opposite ends of the second deposition tube 12; the first blowing line 21 is communicated with the inlet of the second deposition tube 12, and is configured to blow air from the inlet of the second deposition tube 12 toward the outlet of the second deposition tube 12.
In practical application, a feeding port of the first deposition pipe 11 is communicated with a discharging port of the cyclone separator 4 through the dipleg 5, and a discharging port of the second deposition pipe 12 is communicated with a material returning inlet of the gasification furnace 6. During the furnace baking period, the gas output of the first gas blowing pipeline 21 is controlled, so that the gas flow of hot gas in the gasification furnace 6 entering the cyclone system can be controlled, the gas flow flowing out of the gas outlet of the gasification furnace 6 is reasonably distributed, and the gas flow and the gas speed in the cyclone system are effectively controlled, thereby being beneficial to controlling the heating rate and the uniformity of the whole gasification system, and avoiding thermal shock of the refractory lining inside the cyclone system caused by too fast heating. Moreover, when the gasification furnace 6 starts to operate, because the material seal is not formed in the material return valve and the dipleg 5, the air pressure in the second deposition pipe 12 can be balanced with the air pressure in the gasification furnace 6 by adjusting the ventilation volume of the first blowing pipeline 21, or the air pressure in the second deposition pipe 12 is slightly smaller than the air pressure in the gasification furnace 6, so that a large amount of gas in the gasification furnace 6 can be prevented from entering the cyclone separator 4 through the material return valve. When the gasification furnace 6 is in stable operation, the first deposition pipe 11 is used for depositing the materials from the cyclone 4 so that the materials form a material seal in the dipleg 5 and the first deposition pipe 11, and the conduction pipe 13 and the second deposition pipe 12 are used for feeding the materials in the first deposition pipe 11 into the gasification furnace 6.
Compared with the prior art, in the material return valve provided by the embodiment of the present invention, the air inlet of the second deposition tube 12 and the discharge port of the second deposition tube 12 are respectively located at two opposite ends of the second deposition tube 12, and the first air blowing pipeline 21 is configured to blow air from the air inlet of the second deposition tube 12 to the discharge port of the second deposition tube 12; in this way, the gas in the gasification furnace 6 can be prevented from entering the return valve from the discharge hole of the second deposition pipe 12 by adjusting the gas output of the first blowing pipe 21 at the initial stage of the operation of the gasification furnace 6 and before the material seal in the first deposition pipe 11 is formed, and then the gas in the gasification furnace 6 is effectively prevented from directly entering the cyclone separator 4 through the return valve.
Optionally, in some embodiments of the present invention, the gasification furnace 6 may be a fluidized bed gasification furnace, and the whole gasification system is a fluidized bed system. Of course, the gasification furnace 6 may have another structure, and is not limited herein.
It is worth pointing out that the utility model provides a returning charge valve does not confine the coal gasification field to, and it can also be applied to in process flows such as catalytic cracking, gas-solid separation.
Optionally, in some embodiments of the present invention, the air inlet of the second deposition tube 12 is located at one side of the material inlet of the second deposition tube 12 far away from the material outlet of the second deposition tube 12, so that the material in the second deposition tube 12 can be fed into the gasification furnace 6 by using the gas from the first blowing pipeline after the material enters the second deposition tube 12.
Referring to fig. 3 and 4, optionally, in some embodiments of the present invention, the material returning valve further includes a gas distribution plate 3 disposed inside the second deposition tube 12, an edge of the gas distribution plate 3 is connected to an inner wall of the second deposition tube 12, and the gas distribution plate 3 is located between an air inlet of the second deposition tube 12 and a material inlet of the second deposition tube 12; the gas distribution plate 3 is provided with a plurality of gas distribution channels, and the gas distribution channels penetrate through two opposite main surfaces of the gas distribution plate 3. The utility model discloses an in the embodiment, through set up gas distribution plate 3 between the air inlet at second sedimentation pipe 12 and the pan feeding mouth of second sedimentation pipe 12 to set up a plurality of gas distribution passageways on gas distribution plate 3, can make the air current that comes from first gas blowing pipeline to be covered with whole second sedimentation pipe 12, thereby help avoiding appearing the material deposit dead angle in second sedimentation pipe 12. Optionally, in some embodiments, a gap is provided between the gas distribution plate 3 and the gas inlet of the first deposition tube 11, so that an even distribution chamber is formed between the gas distribution plate 3 and the gas inlet of the first deposition tube 11 to facilitate the distribution of the gas. The embodiment of the utility model provides an in, the gas distribution passageway can be the gas distribution pipe of setting on gas distribution plate 3, also can be the via hole of setting on gas distribution plate 3, does not do the restriction here.
Optionally, in some embodiments of the present invention, the plurality of air distribution channels include a central air distribution channel 31 located in the central region of the air distribution plate 3, and a plurality of circles surrounding the central air distribution channel 31 surround the air distribution channel 32, each circle surrounding the air distribution channel 32 includes a plurality of surrounding air distribution channels 32 arranged at intervals, and the diameter of the central air distribution channel 31 is larger than the diameter of the surrounding air distribution channel 32. This helps to form a jet of gas from the first gas blowing line 21, increasing the strength of the gas flow and thus facilitating better flow of material in the second deposition tube 12.
Optionally, in some embodiments of the present invention, the gas distribution plate 3 includes: a first region A, and a second region B other than the first region A; wherein, the first area A is positioned at one side of the central gas distribution channel 31 close to the conduction pipe 13, and the minimum distance from a boundary line L between the first area A and the second area B to the axis of the second deposition pipe 12 is 1/6-1/4 of the pipe diameter of the second deposition pipe 12; the surrounding gas distribution channel 32 in the first area A is obliquely arranged relative to the axis of the second deposition tube 12, and the air outlet of the surrounding gas distribution channel 32 in the first area A points to the axis of the second deposition tube 12; the circumferential gas distribution channel 32 located in the second region B is arranged parallel to the axis of the second deposition tube 12. Wherein the surrounding gas distribution channel 32 in the first area a is inclined in the above-mentioned manner, which helps to increase the falling speed of the material from the conducting pipe 13, and also helps to avoid the high-speed gas flow in the material return valve from forming a vortex at the discharge outlet of the conducting pipe 13.
Referring to fig. 1 and fig. 2, optionally, in some embodiments of the present invention, an air inlet is further disposed on the first deposition tube 11, the air inlet of the first deposition tube 11 and the discharge port of the first deposition tube 11 are respectively located at two opposite ends of the first deposition tube 11, and the air inlet of the first deposition tube 11 is located at a side of the feeding port of the first deposition tube 11, which is far away from the discharge port of the first deposition tube 11; the return valve further comprises a second blowing line 22, communicating with the inlet of the first deposition tube 11, configured to blow from the inlet of the first deposition tube 11 towards the outlet of the first deposition tube 11. In this way, it is possible to facilitate the material in the first deposition tube 11 to enter the conduction tube 13. In order to facilitate the respective control of the gas flows in the first and second blowing lines 21, 22, optionally, a first blowing valve 21 'is provided on the first blowing line 21, and a second blowing valve 22' is provided on the second blowing line 22.
To avoid the material to block up in the return valve, optionally, in some embodiments of the present invention, the return valve further comprises: the first air release pipeline 23 is communicated with the first deposition pipe 11, and a communicated interface of the first air release pipeline and the first deposition pipe faces to a feeding port of the first deposition pipe 11 and is configured to blow air to the feeding port of the first deposition pipe 11; a second air release pipeline 24 which is communicated with the conduction pipe 13, and the communicated interface of the second air release pipeline and the conduction pipe 13 faces to one end of the conduction pipe 13 communicated with the second deposition pipe 12, and is configured to blow air to the end of the conduction pipe 13 communicated with the second deposition pipe 12; and a third air release pipeline 25 which is communicated with the second deposition pipe 12, has a communicated interface at the bottom of the second deposition pipe 12 and is configured to blow air to the side where the discharge port of the second deposition pipe 12 is located.
it should be noted that, in the embodiment of the present invention, the interface of the first degassing pipeline 23 communicating with the first deposition tube 11 faces the material inlet of the first deposition tube 11, which may refer to that the interface is facing the material inlet of the first deposition tube 11, or that the interface is inclined towards the side where the material inlet of the first deposition tube 11 is located (without being completely aligned with the material inlet of the first deposition tube 11). Similarly, the connection port of the second degassing pipeline 24, which is communicated with the conducting pipe 13, may be opposite to the end of the conducting pipe 13, which is communicated with the second deposition pipe 12, or may be inclined approximately towards the side where the end is located. The interface of the third air supply pipeline 25 communicated with the second deposition pipe 12 is located at the bottom of the second deposition pipe 12, and can be inclined towards one side where the discharge hole of the second deposition pipe 12 is located, so that the phenomenon that the material is blocked in the return valve is further reduced, and the material can smoothly pass through the discharge hole of the second deposition pipe 12 and enter the gasification furnace 6.
In order to facilitate the control of the air output of each blowing pipeline, optionally, in some embodiments of the present invention, a first air releasing valve 23' is provided on the first air releasing pipeline 23, a second air releasing valve 24' is provided on the second air releasing pipeline 24, and a third air releasing valve 25' is provided on the third air releasing pipeline 25. Optionally, in some embodiments of the present invention, the first blowing valve 21', the second blowing valve 22', and the first to third release valves are all gas regulating valves.
For better ensuring the material flows out of the second deposition pipe 12, optionally, in some embodiments of the present invention, the third degassing pipeline 25 includes a main pipeline and a plurality of branch pipelines 251, one end of each branch pipeline 251 can communicate with one end of the main pipeline close to the second deposition pipe 12, the other end of each branch pipeline 251 communicates with the second deposition pipe 12, and the interfaces of each branch pipeline 251 communicating with the second deposition pipe 12 are sequentially spaced along the axial direction of the second deposition pipe, since the interfaces of the branch pipelines 251 communicating with the second deposition pipe 12 are located at the bottom of the second deposition pipe 12, and most of the interfaces of the branch pipelines 251 communicating with the second deposition pipe 12 are inclined to one side of the discharge port of the second deposition pipe 12, thereby promoting fluidization and effectively transporting the stacked material layer. Illustratively, the second deposition tube 12 is horizontally disposed, the feeding port is located at the top of the second deposition tube 12, the discharging port and the air inlet are respectively located at two opposite ends of the second deposition tube 12, and in the interfaces where all the branch pipes 251 are communicated with the second deposition tube 12, there may be some feeding ports pointing to the second deposition tube 12, or some discharging ports pointing directly to the second deposition tube 12, which is beneficial to further promoting fluidization and improving material conveying efficiency.
in practice, when gas is introduced into the third degassing tube, the gas can be promoted to form an entrained flow at the bottom of the second deposition tube 12 by providing a plurality of branch pipes 251, so as to promote the outflow of the material. Moreover, in order to better facilitate the transportation of the materials, a plurality of branch pipes 251 may be provided, and the joints of the second deposition pipe 12 and the branch pipes 251 may be sequentially arranged from the feeding port of the second deposition pipe 12 to the discharging port of the second deposition pipe 12, and the arrangement is not limited to one row, and two or more rows may be arranged.
Optionally, in some embodiments of the present invention, the first deposition tube 11 and the second deposition tube 12 are disposed parallel to each other, the conduction tube 13 is disposed obliquely with respect to the first deposition tube 11, and a corner at a junction of the conduction tube 13 and the first deposition tube 11 is an obtuse angle. In actual operation, the first deposition tube 11 and the second deposition tube 12 are horizontally disposed, and at this time, the conduction tube 13 is disposed to be inclined with respect to the horizontal plane. This facilitates the formation of a seal of material in the first deposition tube 11 and the second deposition tube 12. By making the corner at the junction of the conducting pipe 13 and the first deposition pipe 11 an obtuse angle, dead corners of the material moving when entering the conducting pipe 13 from the first deposition pipe 11 can be effectively avoided, thereby facilitating the material flowing. Of course, the first deposition tube 11 and the second deposition tube 12 may be disposed at other angles, and are not limited herein.
Optionally, in some embodiments of the present invention, the included angle between the conduction pipe 13 and the first deposition pipe 11 is smaller than the supplementary angle of the repose angle of the collected material. Thus, when the first deposition tube 11 and the second deposition tube 12 are horizontally disposed, the included angle between the conduction tube 13 and the horizontal plane is larger than the repose angle of the material, which can better facilitate the material to enter the second deposition tube 12 from the conduction tube 13.
The embodiment of the utility model also provides a whirlwind returning charge equipment, this whirlwind returning charge equipment includes at least one cyclone 4, with the dipleg 5 of the bottom intercommunication of at least one cyclone 4, and as above-mentioned return valve; wherein, the feeding port of the first deposition pipe 11 of the material returning valve is communicated with the dipleg 5, and the discharging port of the second deposition pipe 12 of the material returning valve is the discharging port of the cyclone material returning device.
It is required to explain, the embodiment of the utility model provides a whirlwind returning charge equipment's beneficial effect is the same with the beneficial effect of above-mentioned returning charge valve, and the here is not repeated.
the embodiment of the utility model also provides a fluidized bed system, which comprises a fluidized bed reactor and the cyclone material returning equipment; the cyclone separator 4 of the cyclone material returning equipment is communicated with the discharge port of the fluidized bed reactor, and the discharge port of the cyclone material returning equipment is communicated with the material returning port of the fluidized bed reactor.
It should be noted that, the embodiment of the present invention provides a fluidized bed system with the same beneficial effects as the cyclone material returning device, and the description is omitted here.
the above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A material return valve, comprising:
the first deposition tube is provided with a feeding port and a discharging port;
One end of the conduction pipe is communicated with the discharge hole of the first deposition pipe;
The feeding port of the second deposition tube is communicated with the other end of the conduction tube, and the air inlet of the second deposition tube and the discharge port of the second deposition tube are respectively positioned at two opposite ends of the second deposition tube;
and the first air blowing pipeline is communicated with the air inlet of the second deposition tube and is configured to blow air from the air inlet of the second deposition tube to the discharge hole of the second deposition tube.
2. The material return valve of claim 1, wherein the inlet of the second deposition tube is located on a side of the inlet of the second deposition tube that is distal from the outlet of the second deposition tube.
3. The material return valve according to claim 2, further comprising a gas distribution plate disposed inside the second deposition tube, wherein an edge of the gas distribution plate is connected to an inner wall of the second deposition tube, and the gas distribution plate is located between a gas inlet of the second deposition tube and a material inlet of the second deposition tube; the air distribution plate is provided with a plurality of air distribution channels, and the air distribution channels penetrate through two opposite main surfaces of the air distribution plate.
4. The return valve according to claim 3, wherein said plurality of gas distribution channels includes a central gas distribution channel located in a central region of said gas distribution plate, and a plurality of circles of surrounding gas distribution channels surrounding said central gas distribution channel, each circle of said surrounding gas distribution channel includes a plurality of surrounding gas distribution channels arranged at intervals, and a diameter of said central gas distribution channel is larger than a diameter of said surrounding gas distribution channels.
5. The return valve of claim 4, wherein the gas distribution plate comprises: a first region, and a second region other than the first region; the first area is positioned on one side of the central gas distribution channel close to the conducting pipe, and the minimum distance from the boundary line of the first area and the second area to the axis of the second deposition pipe is 1/6-1/4 of the pipe diameter of the second deposition pipe;
Wherein, the surrounding gas distribution channel in the first area is obliquely arranged relative to the axis of the second deposition tube, and the air outlet of the surrounding gas distribution channel in the first area points to the axis of the second deposition tube; the surrounding gas distribution channel positioned in the second area is arranged parallel to the axis of the second deposition tube.
6. The material return valve according to claim 1, wherein the first deposition tube is further provided with an air inlet, the air inlet of the first deposition tube and the discharge port of the first deposition tube are respectively located at two opposite ends of the first deposition tube, and the air inlet of the first deposition tube is located at one side of the feed port of the first deposition tube, which is far away from the discharge port of the first deposition tube;
The material return valve further comprises a second blowing pipeline which is communicated with the air inlet of the first deposition pipe and is configured to blow air from the air inlet of the first deposition pipe to the discharge hole of the first deposition pipe.
7. the return valve of claim 1, further comprising:
The first air release pipeline is communicated with the first deposition pipe, and a communicated interface of the first air release pipeline and the first deposition pipe faces to the feeding port of the first deposition pipe and is configured to blow air to the feeding port of the first deposition pipe;
The second air release pipeline is communicated with the conduction pipe, a communicated interface of the second air release pipeline and the conduction pipe faces to one end of the conduction pipe communicated with the second deposition pipe, and air is blown to one end of the conduction pipe communicated with the second deposition pipe;
And the third air release pipeline is communicated with the second deposition pipe, and a communicated interface of the third air release pipeline and the second deposition pipe is positioned at the bottom of the second deposition pipe and is configured to blow air to one side where the discharge hole of the second deposition pipe is positioned.
8. The return valve according to claim 7, wherein the third degassing pipeline comprises a main pipeline and a plurality of branch pipelines, one end of each branch pipeline is communicated with the main pipeline, the other end of each branch pipeline is communicated with the second deposition pipe, and the interfaces of the branch pipelines, which are communicated with the second deposition pipe, are arranged at intervals along the axial direction of the second deposition pipe.
9. The material return valve according to claim 1, wherein the first deposition pipe and the second deposition pipe are arranged in parallel with each other, the conducting pipe is arranged obliquely with respect to the first deposition pipe, and a corner where the conducting pipe is connected with the first deposition pipe is an obtuse angle.
10. The return valve of claim 9, wherein a corner at which the conduit connects to the first deposition tube is less than a supplementary angle to a repose angle of the collected material.
11. Cyclone material returning equipment comprises at least one cyclone separator and a dipleg communicated with the bottom of the at least one cyclone separator, and is characterized by further comprising the material returning valve as claimed in any one of claims 1 to 10, wherein a feeding port of a first deposition pipe of the material returning valve is communicated with the dipleg, and a discharging port of a second deposition pipe of the material returning valve is a discharging port of the cyclone material returning equipment.
12. A fluidized bed system comprising a fluidized bed reactor, characterized by further comprising cyclone material returning equipment according to claim 11, wherein a cyclone separator of the cyclone material returning equipment is communicated with a material outlet of the fluidized bed reactor, and a material outlet of the cyclone material returning equipment is communicated with a material returning port of the fluidized bed reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920276921.9U CN209741077U (en) | 2019-03-05 | 2019-03-05 | Return valve, cyclone return equipment and fluidized bed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920276921.9U CN209741077U (en) | 2019-03-05 | 2019-03-05 | Return valve, cyclone return equipment and fluidized bed system |
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| Publication Number | Publication Date |
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| CN209741077U true CN209741077U (en) | 2019-12-06 |
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| CN201920276921.9U Active CN209741077U (en) | 2019-03-05 | 2019-03-05 | Return valve, cyclone return equipment and fluidized bed system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265272A (en) * | 2021-05-11 | 2021-08-17 | 新奥科技发展有限公司 | Return riser structure, coal gasification system and method for returning materials |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265272A (en) * | 2021-05-11 | 2021-08-17 | 新奥科技发展有限公司 | Return riser structure, coal gasification system and method for returning materials |
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