Cooling device for inlet of biomass pressurized fluidized bed gasifier

Abstract

The utility model discloses a cooling device for a biomass pressurized fluidized bed gasifier inlet, which comprises a clamping flange forge piece, a jacket outer pipe, a jacket core pipe and a jacket inner pipe, the jacket outer pipe and the jacket inner pipe are coaxially arranged, the jacket inner pipe is positioned in the jacket outer pipe, the jacket core pipe is arranged between the jacket outer pipe and the jacket inner pipe, and the jacket inner pipe is positioned in the jacket outer pipe. A first cooling liquid flow channel is formed between the jacket outer pipe and the jacket core pipe, a second cooling liquid flow channel is formed between the jacket inner pipe and the jacket core pipe, the same ends of the jacket outer pipe, the jacket core pipe and the jacket inner pipe are fixedly connected with the clamping flange forge piece, and the other ends of the jacket outer pipe and the jacket inner pipe are fixed on the sealing plate. The cooling device disclosed by the utility model can be used as an extension part of the screw rod cooling jacket of the screw conveyer towards the inside of the gasification furnace, so that the temperature at the inlet of the biomass gasification furnace can be effectively reduced, the material selection range is favorably increased, and the total cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, specifically to a cooling device for the inlet of a biomass pressurized fluidized bed gasifier. Background Technology

[0002] The biomass gasification furnace is designed with a pressure of 3 MPa and a temperature of 1500℃. The material inlet is connected to a screw conveyor. Under these high temperature and pressure conditions, the choice of materials is very limited. The material must meet strength requirements, sealing requirements, ease of maintenance, and a certain degree of economic efficiency for the unit to be viable. Therefore, a cooling device is needed to reduce the temperature at the material inlet, lessen the limitations on material selection, and facilitate later maintenance. Utility Model Content

[0003] To solve at least one technical problem of the prior art, this utility model provides a cooling device for the inlet of a biomass pressurized fluidized bed gasifier.

[0004] To achieve the above-mentioned utility model objectives, the technical solution adopted by this utility model is as follows: a cooling device for the inlet of a biomass pressurized fluidized bed gasifier, comprising a clamping flange forging, an outer jacket tube, a jacket core tube, and an inner jacket tube. The outer jacket tube and the inner jacket tube are coaxially arranged, and the inner jacket tube is located inside the outer jacket tube. The jacket core tube is disposed between the outer jacket tube and the inner jacket tube, forming a first coolant flow channel between the outer jacket tube and the jacket core tube, and forming a second coolant flow channel between the inner jacket tube and the jacket core tube. The same end of the outer jacket tube, the jacket core tube, and the inner jacket tube is fixedly connected to the clamping flange forging, and the other end of the outer jacket tube and the inner jacket tube is fixed to a sealing plate.

[0005] Furthermore, the other end of the jacketed core tube does not contact the sealing plate, and the second coolant flow channel and the first coolant flow channel are connected at the end of the jacketed core tube.

[0006] Furthermore, the clamping flange forging is provided with N jacket water inlets and N jacket water outlets, the N jacket water inlets and N jacket water outlets extending radially along the clamping flange forging, wherein N≥2, the jacket water inlets are connected to the first coolant flow channel, and the jacket water outlets are connected to the second coolant flow channel.

[0007] Furthermore, the N jacket water inlets and N jacket water outlets are arranged at equal intervals along the circumference of the clamping flange forging, and the jacket water inlets and jacket water outlets are arranged alternately.

[0008] Furthermore, a first convex ring is provided at the middle part of the inner ring of the clamping flange forging. The first convex ring extends circumferentially along the inner ring of the clamping flange forging and extends radially. The jacket core tube is fixedly connected to the first convex ring by welding.

[0009] Furthermore, the clamping flange forging is provided with a second convex ring and a third convex ring on both sides of the first convex ring, the inner tube of the jacket is fixedly connected to the second convex ring by welding, and the outer tube of the jacket is fixedly connected to the third convex ring by welding.

[0010] Furthermore, the second convex ring extends circumferentially along the inner ring of the clamping flange forging and extends radially, with the end face of the second convex ring opposite to the first convex ring flush with the outer end face of the clamping flange forging.

[0011] Furthermore, the third convex ring is disposed on the inner side of the clamping flange forging, the third convex ring extends circumferentially along the clamping flange forging and extends axially, and the inner diameter of the third convex ring is equal to the inner ring diameter of the clamping flange forging.

[0012] Furthermore, the jacket water inlet is disposed between the first convex ring and the third convex ring, and the jacket water outlet is disposed between the first convex ring and the second convex ring.

[0013] Furthermore, multiple support plates are provided between the jacket core tube and the jacket outer tube, and between the jacket core tube and the jacket inner tube, with the support plates positioned close to the sealing plate.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0015] The present invention utilizes a cooling device connected between the screw conveyor and the biomass gasifier. The cooling device can serve as an extension of the screw conveyor's screw cooling jacket into the gasifier, effectively reducing the temperature at the inlet of the biomass gasifier. This allows for a wider range of material choices, reduces overall costs, and the cooling device is sealed to the screw conveyor and biomass gasifier via a clamping flange forging, making installation and replacement convenient. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a cooling device for the inlet of a biomass pressurized fluidized bed gasifier according to the present invention.

[0017] Figure 2 for Figure 1 Enlarged view of section C;

[0018] Figure 3 This is a perspective view of the clamping flange forging of this utility model;

[0019] Figure 4 This is a cross-sectional view of the clamping flange forging of this utility model;

[0020] Figure 5 This is the front view of the sealing plate of this utility model. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0025] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Reference Figures 1 to 5 This utility model provides a cooling device for the inlet of a biomass pressurized fluidized bed gasifier, including a clamping flange forging 1, a jacket outer tube 2, a jacket core tube 3, and a jacket inner tube 4. The jacket outer tube 2 and the jacket inner tube 4 are coaxially arranged, and the jacket inner tube 4 is located inside the jacket outer tube 2. The jacket core tube 3 is arranged between the jacket outer tube 2 and the jacket inner tube 4. A first coolant flow channel 5 is formed between the jacket outer tube 2 and the jacket core tube 3, and a second coolant flow channel 6 is formed between the jacket inner tube 4 and the jacket core tube 3. The same end of the jacket outer tube 2, the jacket core tube 3, and the jacket inner tube 4 is fixedly connected to the clamping flange forging 1, and the other end of the jacket outer tube 2 and the jacket inner tube 4 is fixed on the sealing plate 7.

[0028] Furthermore, the other end of the jacketed core tube 3 does not contact the sealing plate 7, and the second coolant flow channel 6 is connected to the first coolant flow channel 5 at the end of the jacketed core tube 3.

[0029] Furthermore, the clamping flange forging 1 is provided with N jacket water inlets 11 and N jacket water outlets 12. The N jacket water inlets 11 and N jacket water outlets 12 extend radially along the clamping flange forging 1, where N≥2. The jacket water inlets 11 are connected to the first coolant flow channel 5, and the jacket water outlets 12 are connected to the second coolant flow channel 6.

[0030] Furthermore, N jacket water inlets 11 and N jacket water outlets 12 are arranged at equal intervals along the circumference of the clamping flange forging 1, and the jacket water inlets 11 and jacket water outlets 12 are arranged alternately.

[0031] Preferably, the clamping flange forging 1 is provided with 3 jacket water inlets 11 and 3 jacket water outlets 12.

[0032] Furthermore, a first convex ring 13 is provided at the middle part of the inner ring of the clamping flange forging 1. The first convex ring 13 extends circumferentially along the inner ring of the clamping flange forging 1 and extends radially. The jacket core tube 3 is fixedly connected to the first convex ring 13 by welding.

[0033] Furthermore, the clamping flange forging 1 is provided with a second convex ring 14 and a third convex ring 15 on both sides of the first convex ring 13, the inner tube 4 of the jacket is fixedly connected to the second convex ring 14 by welding, and the outer tube 2 of the jacket is fixedly connected to the third convex ring 15 by welding.

[0034] Furthermore, the second convex ring 14 extends circumferentially along the inner ring of the clamping flange forging 1 and extends radially, with the end face of the second convex ring 14 facing away from the first convex ring 13 flush with the outer end face of the clamping flange forging 1.

[0035] Furthermore, the third convex ring 15 is disposed on the inner side of the clamping flange forging 1. The third convex ring 15 extends circumferentially along the clamping flange forging 1 and extends axially. The inner diameter of the third convex ring 15 is equal to the inner ring diameter of the clamping flange forging 1.

[0036] Furthermore, the jacket water inlet 11 is located between the first convex ring 13 and the third convex ring 15, and the jacket water outlet 12 is located between the first convex ring 13 and the second convex ring 14.

[0037] Furthermore, multiple support plates 8 are provided between the jacketed core tube 3 and the jacketed outer tube 2, and between the jacketed core tube 3 and the jacketed inner tube 4, with the support plates 8 positioned close to the sealing plate 7.

[0038] The operation process of the cooling device of this utility model is as follows: First, the clamping flange forging 1 is sealed and connected to the screw conveyor A and the gasifier B by bolts. Then, the outer jacket tube 2, the core jacket tube 3 and the inner jacket tube 4 are inserted into the lining B1 of the gasifier B. Then, the coolant is introduced into the first coolant channel 5 through the jacket water inlet 11. The coolant flows along the first coolant channel 5 to the sealing plate 7 and flows into the second coolant channel 6. Finally, the coolant flows into the jacket water outlet 12 through the second coolant channel 6 and is discharged from the cooling device. During the flow of the coolant in the cooling device, it can exchange heat with the material in the inner jacket tube 4, thereby cooling the material and effectively reducing the temperature at the inlet of the biomass gasifier. This is beneficial to increasing the range of material selection and reducing the overall cost.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cooling device for the inlet of a biomass pressurized fluidized bed gasifier, characterized in that, The device includes a clamping flange forging (1), a jacketed outer tube (2), a jacketed core tube (3), and a jacketed inner tube (4). The jacketed outer tube (2) and the jacketed inner tube (4) are coaxially arranged, and the jacketed inner tube (4) is located inside the jacketed outer tube (2). The jacketed core tube (3) is disposed between the jacketed outer tube (2) and the jacketed inner tube (4). A first coolant flow channel (5) is formed between the jacketed outer tube (2) and the jacketed core tube (3). A second coolant flow channel (6) is formed between the jacketed inner tube (4) and the jacketed core tube (3). The same end of the jacketed outer tube (2), the jacketed core tube (3), and the jacketed inner tube (4) is fixedly connected to the clamping flange forging (1). The other end of the jacketed outer tube (2) and the jacketed inner tube (4) is fixed on a sealing plate (7).

2. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 1, characterized in that, The other end of the jacketed core tube (3) is not in contact with the sealing plate (7), and the second coolant flow channel (6) and the first coolant flow channel (5) are connected at the end of the jacketed core tube (3).

3. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 1, characterized in that, The clamping flange forging (1) is provided with N jacket water inlets (11) and N jacket water outlets (12). The N jacket water inlets (11) and N jacket water outlets (12) extend radially along the clamping flange forging (1), where N≥2. The jacket water inlets (11) are connected to the first coolant flow channel (5), and the jacket water outlets (12) are connected to the second coolant flow channel (6).

4. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 3, characterized in that, N jacket water inlets (11) and N jacket water outlets (12) are arranged at equal intervals along the circumference of the clamping flange forging (1), and the jacket water inlets (11) and the jacket water outlets (12) are arranged alternately.

5. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 3 or 4, characterized in that, The clamping flange forging (1) has a first convex ring (13) in the middle of its inner ring. The first convex ring (13) extends circumferentially along the inner ring of the clamping flange forging (1) and extends radially. The jacket core tube (3) is fixedly connected to the first convex ring (13) by welding.

6. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 5, characterized in that, The clamping flange forging (1) has a second convex ring (14) and a third convex ring (15) respectively on both sides of the first convex ring (13). The inner tube of the jacket (4) is fixedly connected to the second convex ring (14) by welding, and the outer tube of the jacket (2) is fixedly connected to the third convex ring (15) by welding.

7. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 6, characterized in that, The second convex ring (14) extends circumferentially along the inner ring of the clamping flange forging (1) and extends radially. The end face of the second convex ring (14) opposite to the first convex ring (13) is flush with the outer end face of the clamping flange forging (1).

8. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 6, characterized in that, The third convex ring (15) is disposed on the inner side of the clamping flange forging (1). The third convex ring (15) extends circumferentially along the clamping flange forging (1) and extends axially. The inner diameter of the third convex ring (15) is equal to the inner diameter of the clamping flange forging (1).

9. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 6, characterized in that, The jacket water inlet (11) is located between the first convex ring (13) and the third convex ring (15), and the jacket water outlet (12) is located between the first convex ring (13) and the second convex ring (14).

10. The cooling device for the inlet of a biomass pressurized fluidized bed gasifier as described in claim 6, characterized in that, Multiple support plates (8) are provided between the jacket core tube (3) and the jacket outer tube (2) and between the jacket core tube (3) and the jacket inner tube (4), and the support plates (8) are located close to the sealing plate (7).

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