A slag melter

Abstract

This invention relates to the field of carbonaceous material reactor technology, specifically to a slag melter, comprising: a combustion aid distribution ring, which is a pipe arranged in a ring around the outer periphery of a discharger; a first pipe connected to the combustion aid distribution ring to introduce combustion aid; a gas-liquid fuel distribution ring, which is a pipe arranged in a ring around the outer periphery of the discharger; a second pipe connected to the gas-liquid fuel distribution ring to introduce gas-liquid fuel; multiple burners connected to both the combustion aid distribution ring and the gas-liquid fuel distribution ring; the multiple burners generate flames and high-temperature flue gas, which, in conjunction with the discharger, agitate, mix, oxidize, heat, and lift inorganic residues to produce molten liquid inorganic residues; this application distributes gas-liquid fuels and combustion aids as needed, fully mixes and combusts them, generates a stable high-temperature flame to agitate the inorganic residues according to operational needs, and adjusts the temperature of the inorganic residues, maintaining the slag level of the inorganic residues and ensuring smooth discharge.

Description

Technical Field

[0001] This invention relates to the field of carbonaceous material reactor technology, and more specifically to a slag melter. Background Technology

[0002] For carbonaceous material reforming reactors within carbonaceous material reactors, carbonaceous particulate matter is used as raw material. Steam, oxygen, carbon dioxide, and mixtures thereof are used as oxidants. A mixed bed is formed through a non-cylindrical, variable-diameter design within the reactor cavity. Secondary reforming is achieved by adding reforming agents such as steam, oxygen, carbon dioxide, hydrogen, tar, and mixtures thereof. The carbonaceous material is used to adjust the product gas composition according to a predetermined process route, thereby improving reactor efficiency. In this process, a stable high-temperature flame is needed to disturb the inorganic residue at the bottom of the reactor and regulate its temperature. Maintaining the slag level and ensuring the molten state of the inorganic residue for smooth discharge is crucial. Therefore, a device is required for temperature regulation, disturbance, and melting of the inorganic residue. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the deficiency in the prior art of lacking a high-performance device for temperature regulation, disturbance and melting of inorganic residues.

[0004] To overcome the above-mentioned defects, the present invention provides a slag melter, suitable for installation on the lower outer side of a discharger, the slag melter comprising:

[0005] The combustion-supporting agent distribution ring is a pipeline arranged in a ring along the outer circumference of the unloader;

[0006] The first pipeline is connected to the combustion accelerator distribution ring, and the first pipeline is adapted to introduce the combustion accelerator;

[0007] The gas-liquid fuel distribution ring is a pipeline arranged in a ring along the outer circumference of the unloader;

[0008] The second pipeline is connected to the gas-liquid fuel distribution ring and is adapted to introduce gas-liquid fuel.

[0009] Multiple burners are arranged along the outer circumference of the lower end of the unloader; the multiple burners are connected to the combustion aid distribution ring and the gas-liquid fuel distribution ring; the multiple burners generate flame streams and high-temperature flue gas, and in conjunction with the unloader, disturb, mix, oxidize, heat and lift the inorganic residue to produce molten liquid inorganic residue.

[0010] Optionally, the combustion-supporting agent distribution ring and the gas-liquid fuel distribution ring are both arranged around the center of the slag melter, and the combustion-supporting agent distribution ring and the gas-liquid fuel distribution ring are coaxially arranged; the combustion-supporting agent distribution ring and the gas-liquid fuel distribution ring are connected by a web.

[0011] Optionally, an annular baffle is installed below the web, the baffle being adapted to block the flame stream generated by the burner.

[0012] Optionally, the gap between the inner side of the baffle and the unloader is 2 to 6 mm.

[0013] Optionally, the slag melter is mounted on the unloader via a flexible structure.

[0014] Optionally, the outlets of the multiple burners are arranged horizontally or downwardly; the centerlines of the multiple burner outlets intersect within a spherical cross-section.

[0015] Optionally, the diameter of the spherical cross-section is no greater than 10 mm.

[0016] Optionally, the combustion-supporting agent distribution ring, the first pipeline, the gas-liquid fuel distribution ring, the second pipeline, and the web plate are an integral structure.

[0017] Optionally, the burner includes:

[0018] The burner core is connected to the gas-liquid fuel distribution ring;

[0019] The outer sleeve is connected to the burner core at one end, and the remaining part of the outer sleeve is spaced around the outer periphery of the burner core; the interface on the side wall of the outer sleeve is connected to the combustion aid distribution ring; the other end of the outer sleeve extends beyond the burner core, or the other end of the outer sleeve is flush with the burner core.

[0020] Optionally, the distance between the other end of the outer sleeve and the burner core outlet end is 0-20 mm.

[0021] The technical solution of the present invention has the following advantages compared with the prior art:

[0022] 1. The slag melter provided by the present invention is suitable for installation on the outer side of the lower end of a discharger. The slag melter includes: a combustion-supporting agent distribution ring, which is a pipe arranged in a ring along the outer circumference of the discharger; a first pipe connected to the combustion-supporting agent distribution ring, which is suitable for introducing combustion-supporting agent; a gas-liquid fuel distribution ring, which is a pipe arranged in a ring along the outer circumference of the discharger; a second pipe connected to the gas-liquid fuel distribution ring, which is suitable for introducing gas-liquid fuel; and a plurality of burners arranged along the outer circumference of the lower end of the discharger. Multiple burners are connected to both the combustion aid distribution ring and the gas-liquid fuel distribution ring. These burners generate flames and high-temperature flue gas, which, in conjunction with the unloader, agitate, mix, oxidize, heat, and lift the inorganic residue, producing molten liquid inorganic residue. This application employs the above technical solution to distribute the gas-liquid fuel and combustion aid as needed, ensuring thorough mixing and combustion. A stable high-temperature flame is generated to agitate the inorganic residue according to operational requirements, adjusting its temperature and maintaining its level for smooth discharge. Furthermore, it features low thermal stress and a small heating surface area, relying on the gas-liquid fuel and combustion aid for self-cooling, resulting in a long service life. When the internal flow channels of the unloader become blocked, it is less susceptible to burn-off by the flame; effectively preventing high-temperature carbon buildup blockage in the gas-liquid fuel flow channels. The slag melter described in this application is not only suitable for carbonaceous material conversion and reforming reactors in mixed beds, but also for other reactors in fluidized beds, fixed beds, or mixed beds. It also has advantages such as long service life, thorough mixing of gaseous and liquid fuels and combustion improvers, fast combustion speed, complete combustion, high combustion efficiency, backfire prevention, strong versatility, low operating cost and convenient inspection and maintenance.

[0023] 2. In this invention, both the combustion-supporting agent distribution ring and the gas-liquid fuel distribution ring are arranged around the center of the slag melter, and the combustion-supporting agent distribution ring and the gas-liquid fuel distribution ring are coaxially arranged; the combustion-supporting agent distribution ring and the gas-liquid fuel distribution ring are connected by a web plate; this application adopts the above technical solution to ensure reliable connection between the combustion-supporting agent distribution ring and the gas-liquid fuel distribution ring, and to provide stable and uniform gas-liquid fuel and combustion-supporting agent.

[0024] 3. The present invention has an annular baffle installed below the web plate, the baffle being adapted to block the flame flow generated by the burner; the present application adopts the above technical solution, by setting the baffle, shielding the upward radiation of the burner flame and reducing the convection of the high-temperature flame flow of the burner, protecting the web plate, gas-liquid fuel distribution ring and combustion aid distribution ring, etc., and reducing heat loss.

[0025] 4. The slag melter of the present invention is mounted on the unloader through a flexible structure; the present application adopts the above technical solution, which compensates for thermal expansion and absorbs thermal stress through a flexible structure to avoid damage.

[0026] 5. The outlets of the multiple burners in this invention are arranged horizontally or downwardly; the center lines of the outlets of the multiple burners intersect within a spherical cross section; by adopting the above technical solution, the flame generated by the multiple burners is more concentrated, and the high temperature of the flame is utilized efficiently.

[0027] 6. The combustion-supporting agent distribution ring, the first pipeline, the gas-liquid fuel distribution ring, the second pipeline, and the web plate of the present invention are an integral structure; the above technical solution is adopted in this application to ensure the reliability of the connection between the combustion-supporting agent distribution ring, the first pipeline, the gas-liquid fuel distribution ring, the second pipeline, and the web plate.

[0028] 7. The burner of the present invention comprises: a burner core, communicating with a gas-liquid fuel distribution ring; an outer sleeve, one end of which is connected to the burner core, and the remaining part of the outer sleeve is spaced around the outer periphery of the burner core; an interface provided on the side wall of the outer sleeve is communicating with the combustion-supporting agent distribution ring; the other end of the outer sleeve extends beyond the burner core, or the other end of the outer sleeve is flush with the burner core; the present application adopts the above technical solution, relying on gas-liquid fuel and combustion-supporting agent to achieve self-cooling protection, the combustion-supporting agent plays a cooling protection role, and avoids the gas-liquid fuel flow channel in the burner core from being blocked due to high-temperature carbon deposits of gas-liquid fuel. Under normal working conditions, corrosion damage is avoided; under harsh working conditions when the unloader channel is blocked, it is not easily eroded by high-temperature flame; it allows the gas-liquid fuel and combustion-supporting agent to be fully mixed, achieving high combustion efficiency; the gas-liquid fuel and combustion-supporting agent are ejected from the burner outer sleeve outlet end face almost simultaneously, the burner outlet end face is protected by airflow, and avoids the flow channel blockage of the burner or backfire due to blockage caused by dripping slag and splashing inorganic residue from the unloader. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a cross-sectional view of the slag melter provided in an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of the burner provided in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. First input connector; 2. Support; 3. First pipeline; 4. Combustion accelerator distribution ring; 5. Second input connector; 6. Second pipeline; 7. Gas-liquid fuel distribution ring; 8. Burner; 9. Web plate; 10. Baffle; 11. First connecting pipe; 12. First union joint; 13. Countersunk screw; 14. Second union joint; 15. Second connecting pipe; 16. Burner core; 17. Outer sleeve; 18. Inorganic residue; 19. High-temperature flue gas; 20. Unloader; 21. Combustion accelerator; 22. Gas-liquid fuel. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] For a carbonaceous material conversion and reforming reactor, carbonaceous particulate matter is used as raw material, and steam, oxygen, carbon dioxide, and mixtures thereof are used as oxidants. A mixed bed is formed through a non-cylindrical variable-diameter design within the reactor cavity. Secondary conversion and reforming are achieved by adding reforming agents such as steam, oxygen, carbon dioxide, hydrogen, tar, and mixtures thereof. The product gas composition is adjusted according to a predetermined product process route, and reactor efficiency is improved. The slag discharge system described in this application can be applied to a carbonaceous material conversion and reforming reactor and can be used as part of the reactor. The slag melter is one of the key components of the slag discharge control system of the carbonaceous material conversion and reforming reactor. Its function is to distribute the gaseous-liquid fuel and combustion aid as needed, fully mix and burn them, and generate a stable high-temperature flame to disturb the inorganic residue pool at the bottom of the reactor and adjust the temperature of the inorganic residue, maintaining the slag level of the inorganic residue pool and ensuring smooth discharge.

[0039] like Figures 1 to 2 One specific embodiment of the slag melter shown includes: a first pipeline 3, a combustion aid distribution ring 4, and a plurality of burners 8 connected in sequence, and a second pipeline 6 and a gas-liquid fuel distribution ring 7 connected in sequence. The slag melter is adapted to be installed on the lower outer side of the unloader 20. Specifically, the slag melter is installed on the unloader 20 through a flexible structure. The slag melter described in this application can be understood as a specially designed isobaric "industrial burner". The unloader 20 can refer to the inorganic residue discharge device of the aforementioned carbonaceous material conversion reforming reactor, and is also conventionally referred to as a "slag discharger" or "slag outlet".

[0040] like Figure 1As shown, the combustion-supporting agent distribution ring 4 is a pipe arranged in a ring around the outer circumference of the unloader 20; the first pipe 3 is adapted to introduce combustion-supporting agent 21; specifically, the first pipe 3 is connected to an external gas-liquid fuel pipeline through a first input connector 1. Combustion-supporting agent 21 refers to air or a mixture containing oxygen. The gas-liquid fuel distribution ring 7 is a pipe arranged in a ring around the outer circumference of the unloader 20 and is fixed by a bracket 2; the second pipe 6 is adapted to introduce gas-liquid fuel 22; specifically, the second pipe 6 is connected to an external combustion-supporting agent pipeline through a second input connector 5. Gas-liquid fuel 22 refers to flammable substances such as liquids, liquefied gases, and pressurized gases that are in a liquid, gaseous, or gas-liquid coexisting state under operating conditions. Multiple burners 8 are arranged along the outer circumference of the lower end of the unloader 20. The multiple burners 8 are connected to both the combustion-supporting agent distribution ring 4 and the gas-liquid fuel distribution ring 7. Specifically, the multiple burners 8 are connected to the combustion-supporting agent distribution ring 4 via a first connecting pipe 11 and a first union joint 12; alternatively, the combustion-supporting agent distribution ring 4 can be connected to the first connecting pipe 11, and the first connecting pipe 11 can be connected to the burners 8 via the first union joint 12. The multiple burners 8 are connected to the gas-liquid fuel distribution ring 7 via a second connecting pipe 15 and a second union joint 14; alternatively, the gas-liquid fuel distribution ring 7 can be connected to the second connecting pipe 15, and the second connecting pipe 15 can be connected to the burners 8 via the second union joint 14. The number of the first connecting pipe 11 and the second connecting pipe 15 is determined according to the number of burners 8; the number of the first connecting pipe 11 and the second connecting pipe 15 can be 4 to 20, and they are evenly distributed along the lower circumference of the combustion-supporting agent distribution ring 4 and the gas-liquid fuel distribution ring 7, respectively. Multiple burners 8 generate flame streams and high-temperature flue gas 19, which, in conjunction with the unloader 20, agitate, mix, oxidize, heat, and lift the inorganic residue 18, producing molten liquid inorganic residue 18. The number of burners 8 is set according to the heat load requirements of the slag melter, and the number of burners 8 is usually 4 to 20.

[0041] The combustion-supporting agent distribution ring 4 and the gas-liquid fuel distribution ring 7 are both arranged around the center of the slag melter, and are coaxially arranged. The combustion-supporting agent distribution ring 4 and the gas-liquid fuel distribution ring 7 are connected by a web plate 9. An annular baffle 10 is installed below the web plate 9, which is suitable for blocking the flame generated by the burner 8. Specifically, the gap between the inner side of the baffle 10 and the unloader 20 is 2-6 mm; the baffle 10 is installed below the web plate 9 by countersunk screws 13; and the baffle 10 is made of a composite of high-temperature and corrosion-resistant alloy and ceramic. The outlets of the multiple burners 8 are arranged horizontally or downwardly; the center lines of the outlets of the multiple burners 8 intersect within a spherical cross-section. Specifically, the diameter of the spherical cross-section is no greater than 10 mm. The multiple burners 8 can be replaced independently, making repair and maintenance convenient, and they can be reused repeatedly by partially replacing parts. By replacing the burners 8, different types of gas-liquid fuels 22 can be used, which is highly versatile and has low operating costs.

[0042] Furthermore, the combustion-supporting agent distribution ring 4, the first pipeline 3, the gas-liquid fuel distribution ring 7, the second pipeline 6, the first connecting pipe 11, the second connecting pipe 15, the support 2, and the web plate 9 are an integral structure. Specifically, the integral structure is either a cast integral structure or a welded integral structure.

[0043] like Figure 2 As shown, the burner 8 includes a burner core 16 and an outer sleeve 17 connected together. The burner core 16 communicates with the gas-liquid fuel distribution ring 7; one end of the outer sleeve 17 is connected to the burner core 16, and the remaining part of the outer sleeve 17 is spaced around the outer periphery of the burner core 16; an interface on the side wall of the outer sleeve 17 communicates with the combustion aid distribution ring 4; the other end of the outer sleeve 17 extends beyond the burner core 16, or the other end of the outer sleeve 17 is flush with the burner core 16. Specifically, the distance between the other end of the outer sleeve 17 and the outlet end of the burner core 16 is 0-20 mm. The distance between the center of the outlet end of the burner 8 and the lower end of the unloader 20 is 5-30 mm. The angle between the centerline of the burner core 16 and the horizontal plane is 0-30°; preferably, the angle between the centerline of the burner core 16 and the horizontal plane is 0-22°. The burner 8 is made of an alloy material with good thermal conductivity and temperature and corrosion resistance. Relying on gaseous fuel 22 and combustion aid 21 to achieve self-cooling protection, the burner 8 avoids corrosion damage under normal operating conditions, and is not easily eroded by high-temperature flame under harsh operating conditions such as blockage of the re-unloading device 20 channel.

[0044] The main working principle of the slag melter described in this application is briefly described as follows: Gas-liquid fuel 22 is input into the gas-liquid fuel distribution ring 7 via the second pipe 6, and then into the internal flow channel of the burner core 16 via the second connecting pipe 15; combustion accelerator 21 is input into the combustion accelerator distribution ring 4 via the first pipe 3, and then into the flow channel between the burner core 16 and the outer casing 17 via the first connecting pipe 11. The gas-liquid fuel 22 and combustion accelerator 21 rapidly mix and ignite at the outlet end of the outer casing 17, generating a high-temperature flame that enters the unloading channel inside the unloader 20, controlling the unloading of inorganic residue 18 and regulating its temperature. Simultaneously, it enters the container space above the unloader 20, disturbing the inorganic residue 18.

[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A slag melter, suitable for installation on the lower outer side of a discharger (20), characterized in that, include: The combustion aid distribution ring (4) is a pipeline arranged in a ring along the outer circumference of the unloader (20); The first pipeline (3) is connected to the combustion accelerator distribution ring (4), and the first pipeline (3) is adapted to introduce the combustion accelerator (21). The gas-liquid fuel distribution ring (7) is a pipeline arranged in a ring along the outer circumference of the unloader (20); The second pipeline (6) is connected to the gas-liquid fuel distribution ring (7), and the second pipeline (6) is adapted to introduce gas-liquid fuel (22); Multiple burners (8) are arranged along the outer circumference of the lower end of the unloader (20); the multiple burners (8) are connected to the combustion aid distribution ring (4) and the gas-liquid fuel distribution ring (7); the multiple burners (8) generate flame and high-temperature flue gas (19), and cooperate with the unloader (20) to disturb, mix, oxidize, heat and lift the inorganic residue (18) to produce molten liquid inorganic residue (18); The combustion aid distribution ring (4) and the gas-liquid fuel distribution ring (7) are both arranged around the center of the slag melter, and the combustion aid distribution ring (4) and the gas-liquid fuel distribution ring (7) are coaxially arranged; the combustion aid distribution ring (4) and the gas-liquid fuel distribution ring (7) are connected by a web plate (9); An annular baffle (10) is installed below the web (9), the baffle (10) being adapted to block the flame stream generated by the burner (8).

2. The slag melter according to claim 1, characterized in that, The gap between the inner side of the baffle (10) and the unloader (20) is 2 to 6 mm.

3. The slag melter according to claim 1 or 2, characterized in that, The slag melter is mounted on the unloader (20) via a flexible structure.

4. The slag melter according to claim 1 or 2, characterized in that, The outlets of multiple burners (8) are set horizontally or downwardly; the center lines of the outlets of multiple burners (8) intersect within a spherical cross section.

5. The slag melter according to claim 4, characterized in that, The diameter of the spherical cross-section is no greater than 10 mm.

6. The slag melter according to claim 1 or 2, characterized in that, The combustion aid distribution ring (4), the first pipeline (3), the gas-liquid fuel distribution ring (7), the second pipeline (6), and the web plate (9) are an integral structure.

7. The slag melter according to claim 1 or 2, characterized in that, The burner (8) includes: The burner core (16) is connected to the gas-liquid fuel distribution ring (7); The outer sleeve (17) is connected to the burner core (16) at one end, and the remaining part of the outer sleeve (17) is spaced around the outer periphery of the burner core (16); the interface provided on the side wall of the outer sleeve (17) is connected to the combustion aid distribution ring (4); the other end of the outer sleeve (17) extends beyond the burner core (16), or the other end of the outer sleeve (17) is flush with the burner core (16).

8. The slag melter according to claim 7, characterized in that, The distance between the other end of the outer sleeve (17) and the outlet end of the burner core (16) is 0 to 20 mm.

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