Mass transfer enhanced slurry bed premixing feeding device and method

Abstract

The invention relates to the technical field of slurry bed premixing, in particular to a mass transfer enhanced slurry bed premixing feeding device and method.The device comprises a mixing tank and further comprises a residual oil injection assembly, a feeding assembly and a control assembly, and the residual oil injection assembly comprises a rotary injection head and an injection pipe; and the pre-hydrogenation assembly comprises a hydrogenation pipe and a rotary jet head. In the invention, residual oil gradually converges at the bottom end in the mixing tank and gradually overflows the rotary jet head and the rotary injection head, and in the rotating process of the rotary jet head and the rotary injection head, the converged residual oil is stirred in opposite directions, so that the residual oil is uniformly mixed. And the residual oil between the rotary jet head and the rotary injection head can be stirred in two directions, so that the mixing contact opportunity between the injected hydrogen and the residual oil which is being injected can be improved, and the mixing degree of the injected hydrogen and the residual oil which is being injected can be further improved.

Description

Technical Field

[0001] The invention relates to the field of slurry bed premixing, and in particular to a slurry bed premixing feeding device and method for enhancing mass transfer. Background Art

[0002] Slurry bed residue oil hydrotreating technology is an advanced petroleum processing method that aims to remove sulfur, nitrogen and heavy structural molecules from residue oil through deep hydrotreating, thereby improving fuel quality and reducing environmental pollution. This technology uses an efficient mixing mechanism and suspended catalyst to allow the residue oil to fully contact with hydrogen in the reactor, achieving a high conversion rate and selectivity.

[0003] Traditional slurry bed residue oil hydroprocessing units usually adopt batch or semi-continuous operation mode, in which the residue oil is first injected into the reactor until it reaches a specified depth, and then concentrated hydroprocessing begins. Although this method can achieve a certain hydrogenation effect, it has some problems: since the residue oil is not immediately fully mixed with hydrogen when entering the reactor, the initial reaction efficiency is low; waiting for the residue oil to be injected to the specified depth before hydrogenation increases the total reaction time and reduces production efficiency.

[0004] In recent years, with the continuous optimization of process flow and technical equipment, some slurry bed residue oil hydrotreating units have begun to adopt continuous and automated operation methods. Even so, the existing technology still faces problems such as low mixing efficiency and long reaction time in the initial stage. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of low mixing efficiency and long reaction time in the oil residue hydrogenation process in the prior art, and to propose a slurry bed premixing feeding device and method for enhancing mass transfer.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: In a first aspect, a slurry bed premixing feeding device for enhancing mass transfer comprises a mixing tank, and also comprises: a residual oil injection assembly, the residual oil injection assembly comprises a rotating injection head and an injection pipe, the injection pipe penetrates the side wall of the mixing tank and extends into the interior of the mixing tank and then communicates with the rotating injection head; a pre-hydrogenation assembly, the pre-hydrogenation assembly comprises a hydrogenation pipe and a rotating jet head, the hydrogenation pipe penetrates the bottom end of the mixing tank and extends into the mixing tank and then communicates with the rotating jet head; wherein, in the process of the residual oil injection assembly injecting residual oil into the mixing tank through the rotating injection head, the pre-hydrogenation assembly injects hydrogen into the bottom end of the mixing tank through the rotating jet head, and the rotation direction of the rotating injection head is opposite to that of the rotating jet head.

[0007] Specifically, the bottom of the mixing tank has an arc-shaped slope, which collects and drains the residual oil initially injected by the residual oil injection assembly to the bottom of the mixing tank near the rotating jet head; It should be understood that, during the process of the residual oil injection assembly starting to inject residual oil through the rotating injection head, the pre-hydrogenation assembly simultaneously injects hydrogen into the bottom end of the mixing tank through the rotating spray head, so that the hydrogen is sprayed toward the inner side wall of the mixing tank. The residual oil sprayed toward the inner side wall of the mixing tank by the rotating injection head flows along the inner wall of the mixing tank. During the process of the residual oil colliding and reflecting with the inner wall of the mixing tank, the residual oil will move at the inner bottom end of the mixing tank, and then contact with the upwardly moving hydrogen. The rotating injection head and the rotating spray head are both in a rotating state, which is conducive to dispersed injection of hydrogen and residual oil, and is conducive to increasing the chance of contact between hydrogen and the injected residual oil. Furthermore, as the residual oil gradually gathers at the bottom of the mixing tank, it will gradually overflow the rotating jet head and the rotating injection head. As the rotating jet head and the rotating injection head rotate, the gathered residual oil will be stirred, and the stirring directions are opposite, so that the residual oil between the rotating jet head and the rotating injection head will be stirred in two directions, which is beneficial to increase the mixing contact opportunities between the injected hydrogen and the residual oil being injected, and is beneficial to further increase the pre-mixing degree of the injected hydrogen and the residual oil being injected.

[0008] Specifically, the rotating directions of the rotating air jet head and the rotating injection head are respectively a first direction and a second direction.

[0009] In one technical solution, the rotating injection head includes: an annular injection shell, which is fixedly connected to the end of the injection pipe; a rotating injection shell, which is rotatably connected to the bottom end of the annular injection shell; and a plurality of injection tubes, which are fixedly connected to the annular side wall of the rotating injection shell and are distributed in an annular array with the rotating injection shell as a reference, and the plurality of injection tubes are all arranged at an angle.

[0010] Specifically, an extension direction of the injection tube forms an acute angle with a first section at a connection point between the injection tube and the rotating injection shell.

[0011] It should be understood that the residual oil from the outside is injected into the annular injection shell through the injection pipe, the residual oil enters the rotating injection shell through the diversion of the annular injection shell, and then is sprayed out through the injection pipe. When the residual oil is sprayed out from the injection pipe, a reaction force is generated. This reaction force acts on the inner wall of the injection pipe, causing the nozzle to generate a rotating torque, so that the rotating injection shell rotates, and the rotating injection is realized. It should be further explained that, during the rotation of the rotary injection shell, the injection pipe will stir the gathered residual oil.

[0012] In one technical solution, a first communication port is provided at the bottom end of the annular injection shell, and a second communication port is provided at the top end of the rotary injection shell, and the first communication port is connected to the second communication port.

[0013] In one technical solution, the rotary spray head comprises: a circular shell, the circular shell is rotatably connected to the end of the hydrogenation pipe, the circular shell is located below the rotary injection shell; a plurality of gas injection pipes, the plurality of gas injection pipes are fixedly connected to the annular side wall of the circular shell, and the plurality of gas injection pipes are all inclinedly arranged; Specifically, an extension direction of the gas injection pipe forms an obtuse angle with a second section at a connection point between the gas injection pipe and the circular shell.

[0014] It should be understood that hydrogen is injected into the circular shell through the gas injection pipe, the hydrogen passes through the circular shell, and then is ejected through the gas injection pipe. When the hydrogen is ejected from the gas injection pipe, a reaction force is generated. This reaction force acts on the inner wall of the gas injection pipe, causing the gas injection pipe to generate a rotational torque, thereby causing the circular shell to rotate, thereby achieving rotational injection; It should be further explained that, during the rotation of the circular shell, the gas injection pipe will stir the gathered residual oil.

[0015] In one technical solution, the rotary jet head further includes: a plug-in tube, which is fixedly connected to the bottom end of the rotary jet head and has a plug-in edge on its surface; a butt joint tube, which is fixedly connected to the top end of the hydrogenation tube and is plugged into the butt joint tube; a first impeller, which is rotatably connected to the inner wall of the butt joint tube; a reciprocating screw, which is fixedly connected to the impeller axis of the first impeller; and a linkage screw sleeve, which is threadedly connected to the surface of the reciprocating screw and fixedly connected to the inner wall of the butt joint tube.

[0016] It should be understood that in the process of hydrogen being added into the docking tube through the hydrogenation tube and passing through the docking tube, the hydrogen will react with the first impeller, generating a force to drive the first impeller to rotate, and the first impeller will simultaneously impart force to the reciprocating screw to rotate, and the reciprocating screw will have the force to drive the linkage screw sleeve to reciprocate, and in the process of the reciprocating screw rotating, the linkage screw sleeve will synchronously drive the plug-in tube to reciprocate, and the plug-in tube will synchronously drive the rotating jet head and the gas injection pipe to reciprocate as a whole, thereby realizing the rotational stirring of the residual oil gathered at the bottom of the mixing tank, while continuously stirring the residual oil gathered at different depths.

[0017] In a second aspect, a slurry bed premixing feeding method for enhancing mass transfer comprises the following steps: Step 1, injecting residual oil and hydrogen through the residual oil injection component and the pre-hydrogenation component respectively; Step 2: The rotary injection head will inject the residual oil by rotary injection, and the rotary injection head will inject the hydrogen by rotary injection. The residual oil will converge at the bottom of the mixing tank, and the hydrogen will flow upward, and the hydrogen and the residual oil will come into contact and mix; Step three, as the residual oil gradually gathers at the bottom of the mixing tank, it will gradually overflow the rotating jet head and the rotating injection head. During the rotation of the rotating jet head and the rotating injection head, the gathered residual oil will be stirred, and the stirring directions are opposite, so that the residual oil between the rotating jet head and the rotating injection head will be stirred in two directions, thereby achieving further mixing of the residual oil and hydrogen.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the residual oil gradually flows over the rotating jet head and the rotating injection head during the process of gradually gathering at the bottom of the mixing tank. During the rotation of the rotating jet head and the rotating injection head, the gathered residual oil is stirred in opposite directions, so that the residual oil between the rotating jet head and the rotating injection head is stirred in two directions, which is beneficial to increase the mixing contact opportunity between the injected hydrogen and the residual oil being injected, and is beneficial to further increase the pre-mixing degree of the injected hydrogen and the residual oil being injected. Compared with the existing mixing method, due to the pre-mixing, the mixing difficulty when the residual oil is injected to a specified depth and concentrated hydrogenation is reduced; 2. When hydrogen is added into the butt joint pipe through the hydrogenation pipe and passes through the butt joint pipe, the hydrogen will react with the first impeller, generating a force to drive the first impeller to rotate. The first impeller will simultaneously impart a force to the reciprocating screw to rotate, and the reciprocating screw will have a force to drive the linkage screw sleeve to reciprocate. During the rotation of the reciprocating screw, the linkage screw sleeve will synchronously drive the plug-in pipe to reciprocate, and the plug-in pipe will synchronously drive the rotating jet head and the gas injection pipe to reciprocate as a whole, thereby realizing the rotation and stirring of the residual oil gathered at the bottom of the mixing tank, while continuously stirring the residual oil gathered at different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the overall structure of the present invention; Figure 2 It is a schematic diagram of the first structure of the rotary injection head after it is exploded according to the present invention; Figure 3 It is a second structural schematic diagram of the rotary injection head of the present invention after it is exploded; Figure 4 It is a schematic structural diagram of a circular shell and an air injection pipe of the present invention; Figure 5 It is a schematic diagram of the structure of the rotary injection shell and the injection pipe of the present invention; Figure 6It is a schematic structural diagram of a circular housing, a plug-in pipe, a butt-joint pipe and a first impeller of the present invention; Figure 7 It is a structural cross-sectional view of the circular casing and the first impeller of the present invention after being exploded; Figure 8 It is a structural cross-sectional view of the aerated shell of the present invention; Fig. 9 for Figure 8 Enlarged view of part A; Fig.10 It is a schematic diagram of the structure of the isolation disk of the present invention; Fig.11 It is a schematic diagram of the overall structure of the present invention; Fig.12 The figure is a flow chart of the method of the present invention.

[0020] In the figure: mixing tank 1, injection pipe 2, hydrogenation pipe 3, annular injection shell 4, rotating injection shell 5, liquid injection pipe 6, first section 7, first connecting port 8, second connecting port 9, circular shell 10, gas injection pipe 11, second section 12, plug-in pipe 13, plug-in edge 14, butt-joint pipe 15, first impeller 16, reciprocating screw 17, linkage screw sleeve 18, plug-in groove 19, limit end 20, isolation plate 21, shunt pipe 22, second impeller 23, gas filling shell 24, connecting port 25, jet ring 26, jet hole 27, gas filling pipe 28, acute angle a, obtuse angle b, first direction c, second direction d. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.11 As shown, in one embodiment, a slurry bed premixing feeding device for enhancing mass transfer includes a mixing tank 1, and also includes: a residual oil injection assembly, the residual oil injection assembly includes a rotating injection head and an injection pipe 2, the injection pipe 2 penetrates the side wall of the mixing tank 1 and extends into the mixing tank 1 and then communicates with the rotating injection head; a pre-hydrogenation assembly, the pre-hydrogenation assembly includes a hydrogenation pipe 3 and a rotating jet head, the hydrogenation pipe 3 penetrates the bottom end of the mixing tank 1 and extends into the mixing tank 1 and then communicates with the rotating jet head; In the process of the residual oil injection component injecting residual oil into the mixing tank 1 through the rotating injection head, the pre-hydrogenation component injects hydrogen into the bottom end of the mixing tank 1 through the rotating injection head, and the rotating injection head rotates in opposite directions to the rotating injection head.

[0023] Specifically, the bottom of the mixing tank 1 has an arc-shaped slope, which collects and drains the residual oil initially injected by the residual oil injection assembly toward the bottom of the mixing tank 1 near the rotating jet head; It should be understood that, during the process of the residual oil injection assembly starting to inject residual oil through the rotating injection head, the pre-hydrogenation assembly simultaneously injects hydrogen into the bottom end of the mixing tank 1 through the rotating jet head, so that the hydrogen is sprayed toward the inner side wall of the mixing tank 1. The residual oil sprayed by the rotating injection head toward the inner side wall of the mixing tank 1 flows along the inner wall of the mixing tank 1. During the process of the residual oil colliding and reflecting with the inner wall of the mixing tank 1, the residual oil will move at the inner bottom end of the mixing tank 1, and then contact with the upwardly moving hydrogen. The rotating injection head and the rotating jet head are both in a rotating state, which is conducive to dispersed injection of hydrogen and residual oil, and is conducive to increasing the chance of contact between hydrogen and the injected residual oil. Furthermore, as the residual oil gradually gathers at the bottom of the mixing tank 1, it will gradually overflow the rotating jet head and the rotating injection head. As the rotating jet head and the rotating injection head rotate, the gathered residual oil will be stirred, and the stirring directions are opposite, so that the residual oil between the rotating jet head and the rotating injection head will be stirred in two directions, which is beneficial to increase the mixing contact opportunity between the injected hydrogen and the residual oil being injected, and is beneficial to further increase the pre-mixing degree of the injected hydrogen and the residual oil being injected.

[0024] Specifically, the rotating directions of the rotating air jet head and the rotating injection head are respectively a first direction c and a second direction d.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in one embodiment, the rotary injection head includes: an annular injection shell 4, which is fixedly connected to the end of the injection pipe 2; a rotary injection shell 5, which is rotatably connected to the bottom end of the annular injection shell 4; and a plurality of injection tubes 6, which are fixedly connected to the annular side wall of the rotary injection shell 5 and are distributed in an annular array with the rotary injection shell 5 as a reference, and the plurality of injection tubes 6 are all inclined.

[0026] Specifically, an extension direction of the injection tube 6 forms an acute angle a with the first section 7 at the connection point between the injection tube 6 and the rotating injection shell 5 .

[0027] It should be understood that the residual oil from the outside is injected into the annular injection shell 4 through the injection pipe 2, and the residual oil enters the rotating injection shell 5 through the diversion of the annular injection shell 4, and then is sprayed out through the injection pipe 6. When the residual oil is sprayed out from the injection pipe 6, a reaction force is generated. This reaction force acts on the inner wall of the injection pipe 6, causing the nozzle to generate a rotating torque, so that the rotating injection shell 5 rotates, and the rotating injection is realized. It should be further explained that, during the rotation of the rotary injection shell 5 , the injection pipe 6 will stir the collected residual oil.

[0028] like Figure 2 and Figure 3 As shown, in one embodiment, a first communication port 8 is opened at the bottom end of the annular injection shell 4, and a second communication port 9 is opened at the top end of the rotary injection shell 5, and the first communication port 8 and the second communication port 9 are connected to each other.

[0029] like Figure 1 , Figure 4 , Figure 6 and Figure 7 As shown, in one embodiment, the rotary jet head includes: a circular shell 10, the circular shell 10 is rotatably connected to the end of the hydrogenation pipe 3, and the circular shell 10 is located below the rotary injection shell 5; a plurality of gas injection pipes 11, the plurality of gas injection pipes 11 are fixedly connected to the annular side wall of the circular shell 10, and the plurality of gas injection pipes 11 are all inclinedly arranged; Specifically, an obtuse angle b is formed between the extension direction of the gas injection pipe 11 and the second section 12 at the connection point between the gas injection pipe 11 and the circular shell 10 .

[0030] It should be understood that hydrogen is injected into the circular shell 10 through the gas injection pipe 11, the hydrogen passes through the circular shell 10, and then is ejected through the gas injection pipe 11. When the hydrogen is ejected from the gas injection pipe 11, a reaction force is generated. This reaction force acts on the inner wall of the gas injection pipe 11, causing the gas injection pipe 11 to generate a rotational torque, thereby causing the circular shell 10 to rotate, thereby achieving rotational injection; It should be further explained that, during the rotation of the circular shell 10 , the gas injection pipe 11 will stir the collected residual oil.

[0031] like Figure 6 and Figure 7 As shown, in one embodiment, the rotary jet head further includes: a plug-in tube 13, which is fixedly connected to the bottom end of the rotary jet head and has a plug-in edge 14 on its surface; a butt-joint tube 15, which is fixedly connected to the top end of the hydrogenation tube 3 and has the plug-in tube 13 inserted into the butt-joint tube 15; a first impeller 16, which is rotatably connected to the inner wall of the butt-joint tube 15; a reciprocating screw 17, which is fixedly connected to the impeller axis of the first impeller 16; and a linkage screw sleeve 18, which is threadedly connected to the surface of the reciprocating screw 17 and fixedly connected to the inner wall of the butt-joint tube 15.

[0032] It should be understood that in the process of hydrogen being added into the docking tube 15 through the hydrogenation tube 3 and passing through the docking tube 15, the hydrogen will react with the first impeller 16, and will generate a force to drive the first impeller 16 to rotate. The first impeller 16 will simultaneously give the reciprocating screw 17 a force to rotate, and the reciprocating screw 17 will have a force to drive the linked screw sleeve 18 to reciprocate. In the process of the reciprocating screw 17 rotating, the linked screw sleeve 18 will synchronously drive the plug-in tube 13 to reciprocate, and the plug-in tube 13 will synchronously reciprocate with the rotating jet head and the gas injection tube 11 as a whole, thereby realizing the rotation and stirring of the residual oil gathered at the bottom end of the mixing tank 1, while continuously stirring the gathered residual oil at different depths.

[0033] like Figure 6 and Figure 7 As shown, in one embodiment, a plug groove 19 is provided on the inner wall of the butt joint pipe 15, and the plug edge 14 is plugged into the plug groove 19. It should be understood that by providing the butt joint of the plug groove 19 and the plug edge 14, the relative rotation freedom of the plug pipe 13 and the butt joint pipe 15 is limited.

[0034] like Figure 6 and Figure 7 As shown, in one embodiment, the top end of the reciprocating screw 17 is fixedly connected to the limit end 20. It should be understood that by providing the limit end 20, it is helpful to prevent the linkage screw sleeve 18 from being separated from the reciprocating screw 17.

[0035] like Figure 1 , Figure 8 , Fig. 9 and 10 As shown, in one embodiment, the mixing tank 1 also includes a mixing component, which includes: an isolation disk 21, which is fixedly connected to the inner wall of the mixing tank 1 and is located above the rotating injection shell 5; a plurality of diversion pipes 22, which are rotatably connected to the isolation disk 21; and a plurality of second impellers 23, which are respectively fixedly connected to the inner walls of the plurality of diversion pipes 22.

[0036] It should be understood that after the liquid passes through the second impeller 23, a vortex will be generated. When the second impeller 23 rotates, the liquid in the second impeller 23 will be affected by the centrifugal force and thrown from the center to the periphery. At the same time, the liquid will also rotate with the second impeller 23. This rotational motion causes the liquid to form a vortex at the outlet of the second impeller 23 and has a certain tangential velocity, so that the mixture of residual oil and hydrogen after passing through the isolation disk 21 can be further vortex mixed.

[0037] like Figure 8 and Fig. 9As shown, in one embodiment, the mixing tank 1 also includes a post-hydrogenation component, which includes: a gas-filling shell 24, on the surface of which a connection port 25 corresponding to a plurality of diverter pipes 22 is provided; a plurality of jet rings 26, which are rotatably connected to the inside of the plurality of connection ports 25, and the top surfaces of the plurality of jet rings 26 are provided with a plurality of jet holes 27, and the plurality of jet rings 26 are fixedly sleeved on the top ends of the plurality of diverter pipes 22; a gas-filling pipe 28, which is fixedly connected to the side wall of the gas-filling shell 24, and extends to the outside of the mixing tank 1 after passing through the mixing tank 1.

[0038] It should be understood that after the residual oil gradually overflows the isolation disk 21, hydrogen is introduced through the gas filling pipe 28, and the hydrogen will enter the gas filling shell 24 through the gas filling pipe 28. The hydrogen in the gas filling shell 24 will enter the jet ring 26 under the diversion of the connecting port 25, and then enter the gathered residual oil through the jet hole 27, and the jet ring 26 will be driven to rotate under the rotation of the diverter pipe 22. The jet ring 26 will rotate and inject jets, so that the ejected gas generates a swirl, which contacts and mixes with the residual oil in a swirl state passing through the diverter pipe 22, so that the hydrogen added again and the residual oil increase the flow direction, which is conducive to further improving the mixing degree of hydrogen and residual oil.

[0039] like Fig.12 As shown, in one embodiment, a slurry bed premixing feeding method for enhancing mass transfer comprises the following steps: Step 1, injecting residual oil and hydrogen through the residual oil injection component and the pre-hydrogenation component respectively; Step 2: The rotary injection head will inject the residual oil by rotary injection, and the rotary injection head will inject the hydrogen by rotary injection. The residual oil will converge at the bottom of the mixing tank 1, and the hydrogen will flow upward, and the hydrogen and the residual oil will come into contact and mix; Step three, as the residual oil gradually gathers at the bottom of the mixing tank 1, it will gradually overflow the rotating jet head and the rotating injection head. During the rotation of the rotating jet head and the rotating injection head, the gathered residual oil will be stirred, and the stirring directions are opposite, so that the residual oil between the rotating jet head and the rotating injection head will be stirred in two directions, thereby achieving further mixing of the residual oil and hydrogen.

Claims

1. A slurry bed premixing feeding device for enhancing mass transfer, comprising a mixing tank (1), characterized in that: Also includes: A residual oil injection assembly, the residual oil injection assembly comprising a rotary injection head and an injection pipe (2), the injection pipe (2) passing through the side wall of the mixing tank (1) and extending into the interior of the mixing tank (1) and then communicating with the rotary injection head; A pre-hydrogenation assembly, the pre-hydrogenation assembly comprising a hydrogenation pipe (3) and a rotating spray head, the hydrogenation pipe (3) passing through the bottom end of the mixing tank (1) and extending into the mixing tank (1) and then communicating with the rotating spray head; In the process of the residual oil injection component injecting residual oil into the mixing tank (1) through the rotating injection head, the pre-hydrogenation component injects hydrogen into the bottom end of the mixing tank (1) through the rotating injection head, and the rotating injection head and the rotating injection head rotate in opposite directions.

2. A slurry bed premixing feeding device for enhanced mass transfer according to claim 1, characterized in that: The rotary injection head comprises: an annular injection shell (4), the annular injection shell (4) being fixedly connected to the end of the injection pipe (2); A rotating injection shell (5), the rotating injection shell (5) being rotatably connected to the bottom end of the annular injection shell (4); A plurality of injection tubes (6), wherein the plurality of injection tubes (6) are fixedly connected to the annular side wall of the rotating injection shell (5) and are distributed in an annular array with the rotating injection shell (5) as a reference, and the plurality of injection tubes (6) are all arranged at an inclination.

3. A slurry bed premixing feeding device for enhanced mass transfer according to claim 2, characterized in that: The bottom end of the annular injection shell (4) is provided with a first communication port (8), the top end of the rotating injection shell (5) is provided with a second communication port (9), and the first communication port (8) and the second communication port (9) are butt-connected and communicated with each other.

4. A slurry bed premixing feeding device for enhanced mass transfer according to claim 3, characterized in that: The rotary jet head comprises: A circular shell (10), the circular shell (10) being rotatably connected to the end of the hydrogenation pipe (3), and the circular shell (10) being located below the rotating injection shell (5); A plurality of gas injection pipes (11), wherein the plurality of gas injection pipes (11) are fixedly connected to the annular side wall of the circular shell (10), and the plurality of gas injection pipes (11) are all arranged at an angle.

5. A slurry bed premixing feeding device for enhanced mass transfer according to claim 4, characterized in that: The rotating jet head also includes: A plug-in pipe (13), the plug-in pipe (13) being fixedly connected to the bottom end of the rotating jet head, and having a plug-in edge (14) on the surface of the plug-in pipe (13); A butt-joint pipe (15), the butt-joint pipe (15) being fixedly connected to the top end of the hydrogenation pipe (3), and the plug-in pipe (13) being plugged into the butt-joint pipe (15); a first impeller (16), the first impeller (16) being rotatably connected to the inner wall of the butt joint (15); A reciprocating screw rod (17), the reciprocating screw rod (17) being fixedly connected to the impeller axis of the first impeller (16); A linkage screw sleeve (18), wherein the linkage screw sleeve (18) is threadedly connected to the surface of the reciprocating screw rod (17) and is fixedly connected to the inner wall of the butt joint tube (15).

6. A slurry bed premixing feeding device for enhanced mass transfer according to claim 5, characterized in that: An inserting groove (19) is provided on the inner wall of the butt-jointing tube (15), and the inserting edge (14) is inserted into the inserting groove (19).

7. A slurry bed premixing feeding device for enhanced mass transfer according to claim 6, characterized in that: The top end of the reciprocating screw rod (17) is fixedly connected to the limiting end (20).

8. The slurry bed premixing feeding device for enhanced mass transfer according to claim 4, characterized in that: The mixing tank (1) also includes a mixing component, which includes: An isolation disk (21), the isolation disk (21) being fixedly connected to the inner wall of the mixing tank (1) and being located above the rotating injection shell (5); a plurality of shunt pipes (22), the plurality of shunt pipes (22) being rotatably connected to the isolation disk (21); A plurality of second impellers (23), wherein the plurality of second impellers (23) are respectively fixedly connected to the inner walls of the plurality of flow dividing pipes (22).

9. A slurry bed premixing feeding device for enhanced mass transfer according to claim 8, characterized in that: The mixing tank (1) also includes a post-hydrogenation component, which includes: An aerated shell (24), wherein a surface of the aerated shell (24) is provided with connection openings (25) corresponding to the plurality of flow distribution pipes (22); A plurality of jet rings (26), the plurality of jet rings (26) are rotatably connected to the interior of the plurality of connecting ports (25), the top surfaces of the plurality of jet rings (26) are each provided with a plurality of jet holes (27), and the plurality of jet rings (26) are respectively fixedly sleeved on the top ends of the plurality of diverter pipes (22); A gas filling pipe (28), the gas filling pipe (28) is fixedly connected to the side wall of the gas filling shell (24), passes through the mixing tank (1) and then extends to the outside of the mixing tank (1).

10. A method applicable to a slurry bed premixing feeding device for enhanced mass transfer according to claim 1, characterized in that: The following steps are involved: Step 1, injecting residual oil and hydrogen through the residual oil injection component and the pre-hydrogenation component respectively; Step 2: The rotary injection head will inject the residual oil by rotary injection, and the rotary injection head will inject the hydrogen by rotary injection. The residual oil will converge at the bottom of the mixing tank (1), and the hydrogen will flow upward, so that the hydrogen and the residual oil will come into contact and mix; Step 3: As the residual oil gradually gathers at the bottom of the mixing tank (1), it gradually overflows the rotating jet head and the rotating injection head. As the rotating jet head and the rotating injection head rotate, the gathered residual oil is agitated in opposite directions, so that the residual oil between the rotating jet head and the rotating injection head is agitated in two directions, thereby achieving further mixing of the residual oil and hydrogen.

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