Device for preventing slag bonding of internal part of gasification furnace
By installing a ring pipe and spray assembly inside the gasifier, steam injection is used to prevent slagging on the internal components of the gasifier, solving the problems of complex structure and difficult operation in the existing technology, and achieving efficient protection of the radiant waste boiler.
Patent Information
- Application Number
- CN202520530417.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Existing technologies for preventing slagging in gasifier internals suffer from problems such as complex structure, difficult operation, and high cost, making it difficult to effectively prevent slagging and ash accumulation on the surface of radiant waste boiler tube bundles.
A ring pipe and spray assembly are installed inside the gasifier. Steam is sprayed onto the inner wall of the radiant waste boiler through the spray pipe. The inclined and horizontal hole structure is used to reduce the temperature of the syngas and slag and prevent them from adhering.
It achieves simple operation, effectively prevents slag and ash accumulation on the surface of the radiant waste boiler tube bundle, and improves the service life and safety of the radiant waste boiler.
Smart Images
Figure CN223906809U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the field of coal gasification equipment, and more particularly, to a device for preventing slagging of gasifier internals. BACKGROUND
[0002] Ash and impurities in the gasification raw material are easy to adhere to the surface of the tube bundle of the radiant syngas cooler when combusted, resulting in decreased thermal efficiency of the radiant syngas cooler, increased operating cost, overheating of the heat exchange tube, and shortened service life. In order to prevent slagging of the surface of the tube bundle of the radiant syngas cooler, steam blowing, acoustic deashing, pulse blowing and other technologies are currently commonly used, but these technologies are relatively expensive and complicated to operate, and are difficult to implement.
[0003] Therefore, how to provide a device for preventing slagging of gasifier internals, which is simple in structure and convenient to operate, to effectively prevent slagging and ash accumulation on the surface of the tube bundle of the radiant syngas cooler after the synthesis gas and molten slag generated by the combustion of pulverized coal gasification enter the radiant syngas cooler, is a problem that needs to be solved by those skilled in the art. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the present disclosure provides a device for preventing slagging of gasifier internals, which is simple in structure and convenient to operate, can effectively prevent slagging and ash accumulation on the surface of the tube bundle of the radiant syngas cooler, and improves the service life of the radiant syngas cooler, ensuring the safety and reliability of the radiant syngas cooler.
[0005] To achieve the above purpose, the present disclosure provides a device for preventing slagging of gasifier internals, which is installed in a gasifier, wherein the gasifier is provided with a radiant syngas cooler, and the device comprises: a ring pipe arranged between the inner wall of the shell of the gasifier and the radiant syngas cooler; a plurality of water inlet assemblies in communication with the ring pipe; and a plurality of spray assemblies, each of which comprises a water outlet pipe and a spray pipe vertically arranged in the radiant syngas cooler, one end of the water outlet pipe is in communication with the ring pipe, the other end of the water outlet pipe is in communication with the bottom end of the spray pipe, the top end of the spray pipe is sealed, and a plurality of spray holes are formed in the side wall of the spray pipe for spraying steam towards the inner wall of the radiant syngas cooler.
[0006] Optionally, the plurality of spray holes comprise a plurality of oblique holes, and the axis of each of the plurality of oblique holes forms an angle of 15°-30° with the axis of the spray pipe.
[0007] Optionally, three oblique holes are arranged in the same radial plane perpendicular to the axis of the spray pipe, and the angle between any two adjacent oblique holes of the three oblique holes is 60°.
[0008] Optionally, the plurality of spray holes further comprises a plurality of horizontal holes, the plurality of horizontal holes and the plurality of oblique holes are in different radial planes perpendicular to the axis of the spray pipe; and each of the plurality of horizontal holes is opened along a tangent direction of a circumferential inner side wall of the spray pipe.
[0009] Optionally, two horizontal holes are arranged in the same radial plane perpendicular to the axis of the spray pipe.
[0010] Optionally, the water outlet pipe comprises a first sub-water outlet pipe and a second sub-water outlet pipe, the second sub-water outlet pipe passes through and is fixedly connected to the radiant waste boiler; one end of the first sub-water outlet pipe is in communication with the ring pipe, the other end of the first sub-water outlet pipe is in communication with one end of the second sub-water outlet pipe located outside the radiant waste boiler; and the other end of the second sub-water outlet pipe located inside the radiant waste boiler is in communication with the bottom end of the spray pipe.
[0011] Optionally, each of the plurality of water inlet assemblies comprises a sleeve and a water inlet pipe, the sleeve passes through and is fixedly connected to the side wall of the shell, the water inlet pipe comprises a first sub-water inlet pipe and a second sub-water inlet pipe, the first sub-water inlet pipe passes through and is connected to the sleeve, and the second sub-water inlet pipe is located inside the gasification furnace; and one end of the first sub-water inlet pipe located outside the gasification furnace serves as a water inlet, one end of the first sub-water inlet pipe located inside the gasification furnace is in communication with one end of the second sub-water inlet pipe, and the other end of the second sub-water inlet pipe is in communication with the ring pipe.
[0012] Optionally, the plurality of water inlet assemblies comprises 2 or more water inlet assemblies, and the plurality of spray assemblies comprises 6 or more spray assemblies.
[0013] Optionally, the spray pipe is connected to the radiant waste boiler through a tie bar.
[0014] Optionally, the radiant waste boiler comprises a cylindrical structure composed of a plurality of tubes.
[0015] Compared with the prior art, the device for preventing the gasification furnace internals from slagging provided by the present disclosure has at least the following beneficial effects:
[0016] The device for preventing the gasification furnace internals from slagging provided by the present disclosure has the advantages of simple structure and convenient operation, by arranging the water inlet assembly and the spray assembly, and spraying steam to the inner wall of the radiant waste boiler through the spray holes of the spray pipe, the surface slagging and dust accumulation of the tube bundle of the radiant waste boiler can be effectively prevented, the service life of the radiant waste boiler is improved, and the safety and reliability of the radiant waste boiler are ensured. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the present disclosure, the embodiments of the present disclosure will be further explained and described in the following with reference to the accompanying drawings, which are only used to more conveniently and specifically describe the embodiments of the present disclosure and not to limit the present disclosure. In the drawings:
[0018] Figure 1 is a structural schematic diagram of an apparatus for preventing the coking of the gasifier internals according to an embodiment of the present disclosure;
[0019] Figure 2 is Figure 1 is an enlarged view of part I of
[0020] Figure 3 is Figure 2 is an A-A sectional view of
[0021] Figure 4 is Figure 2 is a B-B sectional view of
[0022] In the drawings: 1, the shell of the gasifier; 2, the radiant waste pot; 3, the second sub-water outlet pipe; 4, the first sub-water outlet pipe; 5, the ring pipe; 6, the second sub-water inlet pipe; 7, the first sub-water inlet pipe; 8, the sleeve pipe; 9, the tie bar; 10, the spray pipe. DETAILED DESCRIPTION
[0023] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the specific embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. These embodiments are only provided in a manner of example. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work are also within the scope of protection of the present disclosure.
[0024] In the description of the present disclosure, it should be noted that the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, “annular” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present disclosure and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.
[0025] In the description of this disclosure, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.
[0026] One embodiment of this disclosure provides a device for preventing slagging on internal components of a gasifier. (See reference...) Figure 1 and Figure 2 The device for preventing slagging on the internal components of the gasifier is installed inside the gasifier, which houses a radiant waste pot 2. The radiant waste pot 2 can be or includes a cylindrical structure composed of multiple tubes, with a water area at its lower part consisting of flowing water. The device for preventing slagging on the internal components of the gasifier includes a ring pipe 5, multiple water inlet components, and multiple spray components. The ring pipe 5 is positioned between the inner wall of the gasifier shell 1 and the radiant waste pot 2. The multiple water inlet components are respectively connected to the ring pipe 5. Each of the multiple spray components includes a water outlet pipe and a spray pipe 10 vertically positioned inside the radiant waste pot 2. Preferably, since the slag, ash, etc., of the radiant waste pot 2 are mostly likely to appear in the upper-middle part of the inner wall surface of the radiant waste pot 2, the spray pipe 10 can be located approximately adjacent to the upper-middle part of the radiant waste pot 2. One end of the water outlet pipe is connected to the ring pipe 5, and the other end is connected to the bottom end of the spray pipe 10. The top of the spray pipe 10 is sealed, and the side wall of the spray pipe 10 is provided with multiple injection holes for spraying steam toward the inner wall of the radiant waste pot 2.
[0027] In a preferred embodiment of this disclosure, such as Figure 2 and Figure 3 As shown, the multiple spray holes include multiple oblique holes, and the axis of each of the multiple oblique holes forms an angle of 15° to 30° with the axis of the spray pipe 10. Figure 3 As shown, three oblique holes can be arranged in the same radial plane perpendicular to the axis of the spray pipe 10, and the included angle between any two adjacent oblique holes (i.e., the included angle between the axes of any two adjacent oblique holes in the top view) is 60°. Multiple oblique holes can be arranged in multiple groups of three oblique holes in the same radial plane in multiple different radial planes.
[0028] In a preferred embodiment of this disclosure, such as Figure 2 and Figure 4As shown, the plurality of injection holes further comprises a plurality of horizontal holes, the plurality of horizontal holes being in different radial planes perpendicular to the axis of the spray pipe 10; each of the plurality of horizontal holes is opened along a tangent direction of the circumferential inner side wall of the spray pipe 10. Figure 4 As shown, two horizontal holes can be arranged in the same radial plane perpendicular to the axis of the spray pipe 10, and the two horizontal holes can be arranged at an angle of 180° apart, for example, the distance apart is L+L, where L is the distance between the axis of the horizontal hole in the radial plane and the straight line parallel to the axis and passing through the center of the circle of the spray pipe 10 in the radial plane. The plurality of horizontal holes can be arranged in multiple groups in multiple different radial planes with two horizontal holes in the same radial plane as a group.
[0029] In a preferred embodiment of the present disclosure, as shown, Figure 1 The water outlet pipe comprises a first sub-water outlet pipe 4 and a second sub-water outlet pipe 3. The second sub-water outlet pipe 3 passes through and is fixedly connected (for example, welded) to the radiant waste pot 2. One end of the first sub-water outlet pipe 4 communicates with the ring pipe 5, and correspondingly, the ring pipe 5 is provided with a plurality of water outlet holes each communicating with the one end of the corresponding first sub-water outlet pipe 4. The other end of the first sub-water outlet pipe 4 communicates with the end of the second sub-water outlet pipe 3 located outside the radiant waste pot 2; and the other end of the second sub-water outlet pipe 3 located inside the radiant waste pot 2 communicates with the bottom end of the spray pipe 10.
[0030] In a preferred embodiment of the present disclosure, as shown, Figure 1 Each of the plurality of water inlet assemblies comprises a sleeve 8 and a water inlet pipe. The sleeve 8 passes through and is fixedly connected to the side wall of the shell 1. The water inlet pipe comprises a first sub-water inlet pipe 7 and a second sub-water inlet pipe 6. The first sub-water inlet pipe 7 passes through and is connected to the sleeve 8, and the second sub-water inlet pipe 6 is located inside the gasification furnace. The end of the first sub-water inlet pipe 7 located outside the gasification furnace serves as a water inlet port. The end of the first sub-water inlet pipe 7 located inside the gasification furnace communicates with one end of the second sub-water inlet pipe 6. The other end of the second sub-water inlet pipe 6 communicates with the ring pipe 5, and correspondingly, the ring pipe 5 is provided with a plurality of water inlet holes each communicating with the other end of the corresponding second sub-water inlet pipe 6.
[0031] In a preferred embodiment of the present disclosure, the number of water inlet assemblies and spray assemblies can be determined according to the size of the radiant waste pot 2. For example, the plurality of water inlet assemblies can comprise 2 or more water inlet assemblies, and the plurality of spray assemblies can comprise 6 or more spray assemblies.
[0032] In a preferred embodiment of the present disclosure, the spray pipe 10 is connected to the radiant waste pot 2 through the tie bar 9.
[0033] In a preferred embodiment of the present disclosure, the inner diameter of each of the plurality of oblique holes and each of the plurality of horizontal holes is 3-7 mm.
[0034] In one preferred embodiment of the present disclosure, as shown in Figure 1 the first sub-inlet pipe 7 and the second sub-outlet pipe 3 are both horizontally arranged, and the second sub-inlet pipe 6 and the first sub-outlet pipe 4 are both vertically arranged.
[0035] In use, the device for preventing the coking of the gasifier internals in one embodiment of the present disclosure first allows the hot water of a certain pressure and temperature to enter through the water inlet of the first sub-inlet pipe 7, and then flow through the second sub-inlet pipe 6 and into the annular pipe 5; the annular pipe 5 then distributes the hot water into the first sub-outlet pipe 4, and then the hot water flows through the second sub-outlet pipe 3 and into the spray pipe 10; in the spray pipe 10, the hot water is gradually vaporized in the process of traveling from the bottom end upwards, and the vaporized steam is sprayed through the multiple horizontally spaced holes and the multiple obliquely arranged holes to the inner wall surface of the radiant waste boiler 2 (i.e., the surface of the tube bundle composed of a series of rows of tubes of the radiant waste boiler 2 facing the spray holes of the spray pipe 10), so as to blow the inner wall surface, thereby reducing the temperature of the synthetic gas, molten slag and ash generated after the combustion of the pulverized coal, and blowing the molten slag, ash and the like away from the inner wall surface of the radiant waste boiler 2 to fall into the lower water area and be carried away, thereby effectively preventing the coking and ash deposition on the surface of the tube bundle, avoiding the corrosion of the coking and ash deposition on the surface of the tube bundle, improving the service life of the radiant waste boiler 2, and ensuring the safety and reliability of the radiant waste boiler 2.
[0036] It should be understood that the drawings in the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures can refer to the general design. The devices and / or structures in the embodiments provided in the present disclosure can be combined, modified and / or changed to form new technical solutions. These technical solutions should also be included in the scope of protection claimed by the present disclosure without creative labor.
[0037] It should be understood that the specific examples provided in the embodiments provided herein are only for detailed description of the embodiments of the present disclosure and not for limitation of the present disclosure. The embodiments in the present disclosure can be practiced without these specific examples. In some embodiments, the structures and / or technologies well known to those skilled in the art are not shown in detail, so as not to obscure the understanding of the present disclosure.
[0038] Although the preferred embodiments of the present disclosure have been shown and described herein, it will be readily apparent to those skilled in the art that these embodiments are provided by way of example only. Various changes, modifications and alternatives will occur to those skilled in the art without departing from the present disclosure. It should be understood that various alternatives to the embodiments of the present disclosure described herein are optionally used to implement the present disclosure. It is intended to define the scope of the present disclosure by the appended claims and to encompass the devices, structures and equivalents thereof within the scope of these claims.
Claims
1. A device for preventing the coking of the inner parts of a gasification furnace, which is installed in a gasification furnace in which a radiant waste boiler (2) is installed, characterized in that, The device comprises: a ring pipe (5) arranged between the inner wall of the shell (1) of the gasifier and the radiant waste pot (2); a plurality of water inlet assemblies respectively communicating with the ring pipe (5); and a plurality of spray assemblies, each of which comprises a water outlet pipe and a spray pipe (10) vertically arranged in the radiant waste pot (2), one end of the water outlet pipe communicating with the ring pipe (5), the other end of the water outlet pipe communicating with the bottom end of the spray pipe (10), the top end of the spray pipe (10) being sealed, and the side wall of the spray pipe (10) being provided with a plurality of spray holes for spraying steam towards the inner wall of the radiant waste pot (2).
2. The apparatus of claim 1, wherein, The plurality of spray holes comprises a plurality of oblique holes, and the axis of each of the plurality of oblique holes forms an angle of 15°-30° with the axis of the spray pipe (10).
3. The apparatus of claim 2, wherein, Three oblique holes are arranged in the same radial plane perpendicular to the axis of the spray pipe (10), and the angle between any two adjacent oblique holes among the three oblique holes is 60°.
4. The apparatus of claim 2, wherein, The plurality of spray holes further comprises a plurality of horizontal holes, which are in different radial planes perpendicular to the axis of the spray pipe (10) from the plurality of oblique holes; and Each of the plurality of horizontal holes is formed along the tangent direction of the circumferential inner side wall of the spray pipe (10).
5. The apparatus of claim 4, wherein, Two horizontal holes are arranged in the same radial plane perpendicular to the axis of the spray pipe (10).
6. The apparatus of claim 1, wherein, The water outlet pipe comprises a first sub-water outlet pipe (4) and a second sub-water outlet pipe (3), and the second sub-water outlet pipe (3) penetrates and is fixedly connected to the radiant waste pot (2); One end of the first sub-water outlet pipe (4) communicates with the ring pipe (5), and the other end of the first sub-water outlet pipe (4) communicates with one end of the second sub-water outlet pipe (3) located outside the radiant waste pot (2); and The other end of the second sub-water outlet pipe (3) located inside the radiant waste pot (2) communicates with the bottom end of the spray pipe (10).
7. The apparatus of claim 1, wherein, Each of the plurality of water inlet assemblies comprises a sleeve pipe (8) penetrating and fixedly connected to the side wall of the shell (1), and a water inlet pipe comprising a first sub-water inlet pipe (7) penetrating and connected to the sleeve pipe (8) and a second sub-water inlet pipe (6) located inside the gasifier; and One end of the first sub-water inlet pipe (7) located outside the gasifier serves as a water inlet, one end of the first sub-water inlet pipe (7) located inside the gasifier communicates with one end of the second sub-water inlet pipe (6), and the other end of the second sub-water inlet pipe (6) communicates with the ring pipe (5).
8. The apparatus of claim 1, wherein, The plurality of water inlet assemblies comprises 2 or more water inlet assemblies, and the plurality of spray assemblies comprises 6 or more spray assemblies.
9. The apparatus of claim 1, wherein, The spray pipe (10) is connected to the radiant waste pot (2) through a tie bar (9).
10. The apparatus of claim 1, wherein, The radiant waste pot (2) comprises a cylindrical structure composed of a plurality of tubes.