Suspended bed hydrogenation sulfur liquefaction sulfur injection device and use method thereof

Abstract

The invention belongs to the field of coal chemical industry, and relates to a suspended bed hydrogenation sulfur liquefaction sulfur injection device and a use method thereof. Comprising a feeding hopper; the feeding hopper is connected with an inlet of the crushing bin; a circular screen drum is arranged in the crushing bin, and spherical balls are arranged in the circular screen drum; a first outlet is formed in the top of the crushing bin, and a second outlet is formed in the bottom; the first outlet is connected with the dust filter screen; the dust filter screen is connected with the dust collection fan; the second outlet is connected with the feeding end of the spiral conveyor; the discharge end of the spiral conveyor is connected with the jacket sulfur melting tank; a liquid sulfur outlet as well as a first steam inlet and a second steam inlet which are symmetrically distributed are formed in the side wall of the jacket sulfur melting tank, a steam condensate outlet is formed in the bottom, and a gas outlet is formed in the top; and the gas outlet is connected with the emptying filter screen. The problems of non-uniform heating of sulfur and solidification and deposition of liquid sulfur in the prior art are solved.

Description

Technical Field

[0001] The invention belongs to the field of coal chemical industry and relates to a suspended bed hydrogenation sulfur liquefaction sulfur injection device and a use method thereof. Background Art

[0002] In recent years, clean conversion technologies for deep coal processing have developed rapidly, and suspended bed hydrogenation catalysts have become a research hotspot. The catalyst is one of the core elements of the suspended bed hydrogenation process. It is only in a sulfurized state that it has good activity. Therefore, the catalyst needs to be sulfurized. Generally, industrial equipment will choose CS2 or DMDS as a sulfurizing agent, and adopt wet sulfurization or dry sulfurization to make the catalyst more active. However, CS2 or DMDS are highly toxic and relatively expensive. In long-term research and improvement, sulfur is selected as the sulfurizing agent, and sulfur powder is mixed with catalyst oil slurry and transported to the reaction system to sulfurize the catalyst.

[0003] In the suspended bed hydrogenation process, the initial method of manually adding solid sulfur suffered from significant uneven mixing issues. The solid sulfur powder was difficult to fully disperse in the oil slurry system, resulting in inconsistent catalyst vulcanization and severely impacting its catalytic activity. Furthermore, manual operation was not only labor-intensive but also posed safety risks in the high-temperature, high-pressure process environment. Subsequent improvements to molten sulfur injection technology have improved mixing uniformity to a certain extent, but due to the large particle size variations and hygroscopic agglomeration characteristics of industrial sulfur raw materials, uneven heating often occurs during the melting process. Large sulfur lumps often fail to fully melt due to their low heat conduction efficiency. During transportation, unmelted particles gradually settle in low-flow areas of the pipeline, eventually forming blockages and severely impacting the continuity of the unit's operation. Furthermore, inadequate sulfur melting can lead to incomplete vulcanization reactions, preventing the full formation of active catalyst centers. This ultimately results in unstable product quality and significant fluctuations in impurity levels. Summary of the Invention

[0004] In order to solve the problems of uneven sulfur heating and liquid sulfur solidification and deposition in the prior art, the present invention provides a suspended bed hydrogenation sulfur liquefaction sulfur injection device and a method for using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a suspended bed hydrogenation sulfur liquefaction sulfur injection device, comprising a feed hopper; the feed hopper is connected to the inlet of a crushing silo; a circular screen drum is provided inside the crushing silo, and spherical balls are provided inside the circular screen drum; a first outlet is provided at the top of the crushing silo, and a second outlet is provided at the bottom; the first outlet is connected to a dust filter; the dust filter is connected to a dust collecting fan; the second outlet is connected to the feed end of a screw conveyor; the discharge end of the screw conveyor is connected to a jacketed molten sulfur pool; a liquid sulfur outlet and a symmetrically distributed first steam inlet and a second steam inlet are provided on the side wall of the jacketed molten sulfur pool, a steam condensate outlet is provided at the bottom, and a gas outlet is provided at the top; the gas outlet is connected to a vent filter.

[0006] Preferably, a nitrogen inlet is provided on the side wall of the dust filter; the nitrogen inlet is connected to a nitrogen solenoid valve.

[0007] Preferably, an air release solenoid valve is provided between the dust filter and the dust collecting fan.

[0008] Preferably, the first steam inlet is connected to a first steam valve; and the second steam inlet is connected to a second steam valve.

[0009] Preferably, a remote level gauge is included, and the detection end of the remote level gauge is arranged inside the jacketed molten sulfur pool.

[0010] Preferably, a remote thermometer is included, and the detection end of the remote thermometer is arranged inside the jacketed molten sulfur pool.

[0011] Preferably, the steam condensate outlet is connected to a steam condensate trap.

[0012] Preferably, an agitator is provided in the jacketed molten sulfur pool.

[0013] Preferably, the liquid sulfur outlet is connected to a liquid sulfur pump.

[0014] In a second aspect, the present invention provides a method for using a suspended bed hydrogenation sulfur liquefaction sulfur injection device, comprising the following steps: Sulfur enters the crushing silo through the feed hopper and is crushed by the spherical balls in the circular screen drum to form sulfur powder. The dust generated during the crushing process is filtered through the dust filter, and the filtered gas is discharged through the dust collection fan; the sulfur powder is then screened by the circular screen drum and transported into the jacketed molten sulfur pool through a screw conveyor; steam enters the jacketed molten sulfur pool through the first steam inlet and the second steam inlet to uniformly heat the sulfur powder, and the generated steam condensate is discharged through the steam condensate outlet. The gas generated in the jacketed molten sulfur pool is filtered through the vent filter and then discharged.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By rotating the circular screen drum, the spherical balls inside it crush the damp sulfur, making the sulfur in powder state before entering the molten sulfur pool, increasing the sulfur heating area; at the same time, by changing the heating method, increasing the heating of the clamping cavity, and introducing steam into the clamping cavity, the heating efficiency is improved, so that the sulfur is fully heated and liquefied.

[0016] Furthermore, the present invention arranges a dust filter and a dust collecting fan on the top of the crushing silo to prevent sulfur dust from escaping into the air and causing environmental pollution.

[0017] Furthermore, under the action of the agitator, the unmelted sulfur powder is fully fused with liquid sulfur and liquefied by heat. The generated gas enters the air venting system after being filtered to prevent harmful gases from polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a structural schematic diagram of a suspended bed hydrogenation sulfur liquefaction sulfur injection device of the present invention; Figure 2 It is a cross-sectional view of the circular screen drum of the present invention.

[0020] Among them: 1. Feed hopper; 2. Crushing silo; 3. Nitrogen solenoid valve; 4. Vent solenoid valve; 5. Dust collection fan motor; 6. Jacketed molten sulfur pool; 7. Dust collection fan; 8. Dust filter; 9. Circular screen drum; 10. Screw conveyor motor; 11. Screw conveyor; 12. Agitator motor; 13. Vent filter; 14. Remote level gauge; 15. First steam valve; 16. Remote thermometer; 17. Agitator; 18. Second steam valve; 19. Jacketed liquid sulfur delivery pipe; 20. Steam condensate drain valve; 21. Liquid sulfur pump motor; 22. Liquid sulfur pump; 23. Screen drum motor. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use. These terms are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] The present invention is described in further detail below with reference to the accompanying drawings: The first object of the present invention is to provide a suspended bed sulfur liquefaction sulfur injection device, such as Figure 1 and Figure 2As shown, it includes a feed hopper 1, which is connected to the inlet of a crushing silo 2; a circular screen drum 9 is provided inside the crushing silo 2, and spherical balls are provided inside the circular screen drum 9; a first outlet is provided at the top of the crushing silo 2, and a second outlet is provided at the bottom; the first outlet is connected to a dust filter 8; the dust filter 8 is connected to a dust collecting fan 7; the second outlet is connected to the feed end of a screw conveyor 11; the discharge end of the screw conveyor 11 is connected to a jacketed molten sulfur pool 6; a liquid sulfur outlet and a first steam inlet and a second steam inlet are symmetrically distributed on the side wall of the jacketed molten sulfur pool 6, a steam condensate outlet is provided at the bottom, and a gas outlet is provided at the top; the gas outlet is connected to a vent filter 13.

[0028] The present invention uses a feed hopper 1 as the initial injection port for sulfur, which is connected to the inlet of the downstream crushing silo 2 to ensure directional transportation of materials. A circular screen drum 9 is provided inside the crushing silo 2. The spherical balls arranged inside the circular screen drum 9 crush the lumpy sulfur into uniform powder through collision and friction when the screen drum rotates. At the same time, the grid structure of the circular screen drum 9 classifies and screens the particle size, and the fine powder that meets the requirements falls into the bottom of the crushing silo 2. The circular screen drum 9 is powered by a screen drum motor 23. The screen drum speed can be controlled by frequency conversion. The screen drum speed is adjusted according to the crushing situation. The first outlet at the top of the crushing silo 2 is connected to the dust filter 8, and cooperates with the dust collection fan 7 to actively suck the suspended sulfur dust to prevent it from escaping into the atmosphere. The second outlet at the bottom of the crushing silo 2 is connected to the feed end of the screw conveyor 11. The sulfur powder is continuously and stably input into the jacketed molten sulfur pool 6 through the closed push of the spiral blades. The screw conveyor 11 is powered by the screw conveyor motor 10. The jacketed molten sulfur pool 6 utilizes a steam-jacketed structure. Symmetrically positioned first and second steam inlets on its sidewalls ensure uniform heat penetration, fully melting the sulfur into a liquid state. A steam condensate outlet at the bottom promptly discharges condensate to maintain heating efficiency. The top gas outlet is purified through a vent filter 13 before being discharged into a main vent pipe, preventing sulfur-containing gases from polluting the environment. Finally, the molten sulfur flows through the sidewall outlet into the jacketed liquid sulfur delivery pipe 19 and is pumped to the catalyst oil slurry storage tank by a liquid sulfur pump 22, powered by a liquid sulfur pump motor 21.

[0029] For example, multiple spherical balls of varying diameters are used. This invention utilizes a design combining spherical balls of varying diameters, significantly improving the quality and efficiency of the sulfur crushing process through differentiated mechanical action. The larger diameter balls, leveraging their mass, generate a powerful impact, effectively breaking down lumps and agglomerates in the sulfur feedstock, fundamentally resolving the problem of large particles clogging the sieve. The smaller diameter balls, on the other hand, finely grind the material through high-frequency rolling friction, achieving a more uniform distribution of sulfur particles and enabling the subsequent melting process to produce feedstock with an optimized specific surface area.

[0030] A nitrogen inlet is provided on the side wall of the dust filter 8, and the nitrogen inlet is connected to the nitrogen solenoid valve 3. When the fine dust generated during the sulfur crushing process is adsorbed on the surface of the dust filter 8 along with the airflow, the nitrogen solenoid valve 3 is intermittently opened to inject low-pressure nitrogen into the dust filter 8 in a pulsed manner, forming a reverse airflow impact, effectively stripping off the attached dust and preventing the pores of the dust filter 8 from clogging; at the same time, the inert properties of nitrogen can isolate oxygen, avoiding the risk of sulfur dust causing explosion due to static electricity or high temperature during the filtration process, and ensuring the safe operation of the system. This design not only maintains the continuous filtration efficiency of the dust filter 8, but also eliminates the need for manual cleaning through automated control, further improving the environmental friendliness and operational stability of the device.

[0031] An air vent solenoid valve 4 is provided between the dust filter 8 and the dust collecting fan 7, and the dust collecting fan 7 is powered by the dust collecting fan motor 5. Through the intelligent opening and closing adjustment of the air vent solenoid valve 4, the dust airflow is precisely controlled during the continuous operation of the dust collecting fan 7. When the dust filter 8 requires nitrogen backflushing, the air vent solenoid valve 4 can quickly cut off the connection between the dust filter 8 and the dust collecting fan 7, preventing low-pressure nitrogen from reversely entering the dust collecting fan 7 and causing disturbances. In the normal filtering state, the air vent solenoid valve 4 remains unobstructed, ensuring that the dust-laden gas passes through the dust filter 8 and is efficiently sucked and collected by the dust collecting fan 7, and the dust is intercepted in the dust filter 8, while the air and nitrogen are discharged through the dust collecting fan 7. Secondly, when dust accumulates in the dust filter 8, the nitrogen solenoid valve 3 is opened to blow the dust in the dust filter 8, causing the dust to fall and separate from the dust filter 8, thereby avoiding clogging the dust filter 8 due to excessive dust, resulting in insufficient air volume at the inlet of the dust collecting fan 7 and causing malfunction of the dust collecting fan 7.

[0032] The first steam inlet is connected to the first steam valve 15; the second steam inlet is connected to the second steam valve 18. By accurately adjusting the flow and pressure of the corresponding steam inlets through the first steam valve 15 and the second steam valve 18, all-round balanced heating of the jacket molten sulfur pool 6 is achieved. A stable heat flow distribution is formed in the jacket cavity through symmetrically distributed steam injection, effectively eliminating the temperature gradient problem easily generated by the traditional one-sided heating method, ensuring that the sulfur in all parts of the jacket molten sulfur pool 6 can obtain a consistent heat energy supply. The advantage of independent dual-valve control is that it can flexibly adjust the steam supply ratio on both sides according to the real-time working conditions, and can respond quickly when a local temperature anomaly is detected, and eliminate potential overheating or underheating areas in a timely manner by dynamically balancing the steam flow.

[0033] The sulfur injection system of the present invention also includes a remote level gauge 14 and a remote thermometer 16, both of which have detection terminals located within the jacketed molten sulfur pool 6. The remote level gauge 14 monitors the amount of liquid sulfur stored in the pool in real time, providing precise signals for starting and stopping the liquid sulfur pump 22 located outside the liquid sulfur outlet. This ensures the liquid level remains within the optimal operating range and prevents overflow or evacuation of liquid sulfur. The remote thermometer 16 continuously monitors temperature changes in the molten sulfur system and, through coordinated control with the steam valve, implements closed-loop regulation of the heating system to maintain a stable temperature environment for the sulfurization reaction.

[0034] The steam condensate outlet is connected to the steam condensate trap 20, which can automatically discharge the condensate generated during the steam heating process to avoid uneven heating caused by the accumulation of condensate.

[0035] The jacketed molten sulfur pool 6 is equipped with an agitator 17, powered by an agitator motor 12. The mechanical rotation of the agitator 17 generates forced convection, which creates a uniform flow of the liquid sulfur within the pool. This effectively breaks up the agglomeration of unmelted sulfur powder, promotes full contact between solid particles and the high-temperature liquid medium, and significantly improves heat transfer efficiency. Furthermore, the agitation prevents localized overheating or sedimentation of the liquid sulfur during heating, maintains temperature uniformity throughout the molten system, and prevents the accumulation of residue at the bottom.

[0036] A second object of the present invention is to provide a method for using a suspended bed hydrogenation sulfur liquefaction sulfur injection device, comprising the following steps: Sulfur enters the crushing silo 2 through the feed hopper 1, and is crushed by the spherical balls in the circular screen drum 9 to form sulfur powder. The dust generated during the crushing process is filtered through the dust filter 8, and the filtered gas is discharged through the dust collection fan 7; the sulfur powder is then screened by the circular screen drum 9 and transported into the jacketed molten sulfur pool 6 through the screw conveyor 11; steam enters the jacketed molten sulfur pool 6 through the first steam inlet and the second steam inlet, uniformly heats the sulfur powder, and the generated steam condensate is discharged through the steam condensate outlet. The gas generated in the jacketed molten sulfur pool 6 is filtered through the vent filter 13 and then discharged.

[0037] The method of the present invention realizes the efficient and safe conversion of sulfur from solid to liquid through a systematic process flow. After the sulfur is introduced into the crushing silo 2 through the feed hopper 1, the spherical balls in the circular screen drum 9 mechanically crush the sulfur, and the dust filter 8 cooperates with the dust collecting fan 7 to capture the sulfur dust raised during the crushing process; the crushed sulfur powder is screened by the circular screen drum 9 and quantitatively transported to the jacketed molten sulfur pool 6 by the screw conveyor 11; the steam introduced through the first steam inlet and the second steam inlet forms a uniform heating environment in the jacketed molten sulfur pool 6, the steam condensate outlet discharges condensed water in time to maintain heat exchange efficiency, and the vent filter 13 purifies the gas generated during the sulfur melting process.

[0038] Example Taking a factory's suspended bed hydrogenation unit as an example, the unit uses industrial sulfur as the sulfurizing agent. During operation, the sulfur injection system often suffers from uneven heating of the sulfur in the molten sulfur pool, causing liquid sulfur to mix with solid sulfur, resulting in an inability to transport or blockage of the transport pipeline. The liquid sulfur solidifies on the auxiliary instruments in the molten sulfur pool, causing instrument failure, and a large amount of solid sulfur fails to melt and is deposited at the bottom of the molten sulfur pool.

[0039] Therefore, the plant adopts the suspended bed hydrogenation sulfur liquefaction sulfur injection device of the present invention to prepare the catalyst sulfurizing agent, and the specific implementation steps are as follows: Before operation, a certain number of round balls of different diameters are placed into the circular screen drum 9, the screen drum motor 23 is started, the speed is adjusted to 20% by frequency conversion, and the screw conveyor 11 is started. The first steam valve 15 and the second steam valve 18 are opened, and the jacketed molten sulfur pool 6 is preheated for 20 minutes. The steam condensate drain valve 20 is opened for drainage, and the remote thermometer 16 is observed. The temperature is close to 80°C.

[0040] Sulfur enters the crushing silo 2 through the feed hopper 1. The circular screen drum 9 rotates under the drive of the screen drum motor 23. The frequency of the screen drum motor 23 is adjusted to increase the speed. The spherical balls of different diameters inside collide with each other and grind the sulfur into fine powder. The sulfur dust generated during the crushing process rises with the air flow, is intercepted by the dust filter 8, and the filtered gas is discharged by the dust collection fan 7 to prevent dust from escaping and polluting the environment. Sulfur powder meeting the particle size requirements is screened by the circular screen drum 9 and falls into the screw conveyor 11, and then enters the jacketed molten sulfur pool 6 through the screw conveyor 11. The first steam valve 15 and the second steam valve 18 respectively control the steam flow rate, so that the steam enters the jacket layer through the first steam inlet and the second steam inlet, uniformly heating the molten sulfur pool, and raising the temperature in the molten sulfur pool to about 130-150°C. By observing the remote liquid level meter 14, when the liquid level is greater than 30%, the stirrer motor 12 is started to start stirring the liquid sulfur, promoting the mixing of sulfur powder and liquid sulfur and improving the melting efficiency. When the liquid level of the remote liquid level meter 14 reaches 45%, the liquid sulfur pump motor 21 is started to start conveying liquid sulfur to the catalyst oil slurry tank.

[0041] During operation, nitrogen solenoid valve 3 is intermittently opened to purge nitrogen from dust filter 8, preventing clogging and ensuring filtration efficiency. Steam condensate is automatically discharged through steam condensate trap 20 to maintain heating efficiency. Sulfur-containing gases generated during the sulfur melting process are purified and discharged through vent filter 13 before being discharged, preventing the escape of harmful gases.

[0042] This embodiment avoids the above problems by modifying the liquid sulfur injection device, and the sulfur injection system works well during operation.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A suspended bed hydrogenation sulfur liquefaction sulfur injection device, characterized in that: The invention comprises a feed hopper (1); the feed hopper (1) is connected to the inlet of a crushing bin (2); a circular screen drum (9) is provided inside the crushing bin (2), and spherical balls are provided inside the circular screen drum (9); a first outlet is provided at the top of the crushing bin (2), and a second outlet is provided at the bottom; the first outlet is connected to a dust filter (8); the dust filter (8) is connected to a dust collecting fan (7); the second outlet is connected to the feed end of a screw conveyor (11); the discharge end of the screw conveyor (11) is connected to a jacketed molten sulfur pool (6); a liquid sulfur outlet and a symmetrically distributed first steam inlet and a second steam inlet are provided on the side wall of the jacketed molten sulfur pool (6), a steam condensate outlet is provided at the bottom, and a gas outlet is provided at the top; the gas outlet is connected to a vent filter (13).

2. A suspended bed hydrogenation sulfur liquefaction sulfur injection device according to claim 1, characterized in that: A nitrogen inlet is provided on the side wall of the dust filter (8); the nitrogen inlet is connected to the nitrogen solenoid valve (3).

3. A suspended bed hydrogenation sulfur liquefaction sulfur injection device according to claim 1, characterized in that: An air release solenoid valve (4) is provided between the dust filter (8) and the dust collecting fan (7).

4. A suspended bed hydrogenation sulfur liquefaction sulfur injection device according to claim 1, characterized in that: The first steam inlet is connected to a first steam valve (15); the second steam inlet is connected to a second steam valve (18).

5. The suspended bed hydrogenation sulfur liquefaction sulfur injection device according to claim 1, characterized in that: It comprises a remote liquid level meter (14), wherein the detection end of the remote liquid level meter (14) is arranged inside the jacketed molten sulfur pool (6).

6. The suspended bed hydrogenation sulfur liquefaction sulfur injection device according to claim 1, characterized in that: It comprises a remote thermometer (16), wherein the detection end of the remote thermometer (16) is arranged inside the jacketed molten sulfur pool (6).

7. The suspended bed hydrogenation sulfur liquefaction sulfur injection device according to claim 1, characterized in that: The steam condensate outlet is connected to the steam condensate trap (20).

8. The suspended bed hydrogenation sulfur liquefaction sulfur injection device according to claim 1, characterized in that: A stirrer (17) is provided in the jacketed molten sulfur pool (6).

9. The suspended bed hydrogenation sulfur liquefaction sulfur injection device according to claim 1, characterized in that: The liquid sulfur outlet is connected to a liquid sulfur pump (22).

10. The method for using the suspended bed hydrogenation sulfur liquefaction sulfur injection device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Sulfur enters the crushing bin (2) through the feed hopper (1) and is crushed by the spherical balls in the circular screen drum (9) to form sulfur powder. The dust generated during the crushing process is filtered through the dust filter (8), and the filtered gas is discharged through the dust collecting fan (7); the sulfur powder is then screened by the circular screen drum (9) and transported to the jacketed molten sulfur pool (6) through the screw conveyor (11); steam enters the jacketed molten sulfur pool (6) through the first steam inlet and the second steam inlet, uniformly heats the sulfur powder, and the generated steam condensate is discharged through the steam condensate outlet. The gas generated in the jacketed molten sulfur pool (6) is filtered through the vent filter (13) and then discharged.

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