Residual oil hydrotreating device and process method

Abstract

The invention belongs to the technical field of residual oil hydrogenation, and particularly relates to a residual oil hydrotreating device and process method.The residual oil hydrotreating device comprises a machine tool oil residue hydrogenation reactor, a high-pressure type separation device, a low-pressure type separation device and a deasphalting device which are sequentially communicated. An electric field treatment device is arranged between the low-pressure separation device and the deasphalting device; the electric field processing device comprises at least one built-in Helmholtz coil electromagnetic coil and a power supply body, and the power supply body supplies power to the Helmholtz coil electromagnetic coil so as to form an electromagnetic field in the electric field processing device; a high-frequency oscillation mechanism is arranged at the bottom of the electric field treatment device so as to form high-frequency oscillation on the electric field treatment device; the residual oil hydrotreating device and the process method have the advantages that residual oil hydro-conversion oil and tail oil can be separated conveniently, and the separation efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of residual oil hydrogenation, and in particular relates to a residual oil hydrogenation treatment device and a process method. Background Art

[0002] As crude oil becomes heavier and worse, more and more heavy oil and residual oil need to be processed. The main purpose of the residual oil hydroprocessing process is to significantly reduce the content of impurities such as sulfur, nitrogen, and metals in the residual oil raw materials through hydroprocessing, hydrogenate and transform non-ideal components such as polycyclic aromatic hydrocarbons, colloids, and asphaltene, increase the hydrogen-to-carbon ratio, reduce the residual carbon content, and significantly improve its cracking performance.

[0003] Fixed bed residue oil hydrogenation technology is a heavy oil deep processing technology. Under high temperature and high pressure hydrogen conditions, atmospheric or vacuum residue oil is desulfurized, denitrogenated, and demetalized to maximize the acquisition of light products. It is one of the important means of residue oil lightening. Fixed bed residue oil hydrogenation technology has been increasingly widely used for its advantages of high liquid product yield, good product quality, strong production flexibility, less waste, environmental friendliness, and high return on investment.

[0004] Although fixed-bed residue oil hydrotreating technology has many advantages, when processing inferior oil, a large amount of residue oil hydrotreating conversion oil and tail oil in the residue oil raw material is difficult to separate, and the separation efficiency is low, which leads to the presence of impurities in subsequent processes. Summary of the invention

[0005] The purpose of the present invention is to provide a residue oil hydroprocessing device and a process method to solve the technical problem that residue oil hydroconversion oil and tail oil are difficult to separate and the separation efficiency is low, which leads to the presence of impurities in subsequent processes, so as to facilitate the separation of residue oil hydroconversion oil and tail oil and improve the separation efficiency.

[0006] In order to solve the above technical problems, the present invention provides a residual oil hydroprocessing device, comprising: A machine tool oil residue hydrogenation reactor, a high-pressure separation device, a low-pressure separation device and a deasphalting device, wherein an electric field treatment device is provided between the low-pressure separation device and the deasphalting device; The electric field processing device includes at least one built-in Helmholtz coil electromagnetic ring and a power supply body, and the power supply body supplies power to the Helmholtz coil electromagnetic ring to form an electromagnetic field in the electric field processing device; A high-frequency oscillation mechanism is provided at the bottom of the electric field processing device to form high-frequency oscillation for the electric field processing device; A front-end shock-absorbing mechanism is provided on the pipeline connecting the low-pressure separation device and the electric field treatment device, and the front-end shock-absorbing mechanism includes a first sleeve, a first extension rod and a first shaking swing arm, wherein the first sleeve is sleeved on the pipeline connecting the low-pressure separation device and the electric field treatment device, the first extension rod is arranged on the outside of the first sleeve, the first shaking swing arm is arranged at one end of the first extension rod away from the locking first sleeve, and the first shaking swing arm absorbs kinetic energy on the pipeline connecting the low-pressure separation device and the electric field treatment device; A rear-end shock-absorbing mechanism is arranged on the pipeline connecting the electric field treatment device and the deasphalting device, and the rear-end shock-absorbing mechanism includes a second sleeve, a second extension rod and a second shaking swing arm. The second sleeve is sleeved on the pipeline connecting the electric field treatment device and the deasphalting device, the second extension rod is arranged on the outside of the second sleeve, and the second shaking swing arm is arranged at one end of the second extension rod away from locking the second sleeve, and the second shaking swing arm absorbs kinetic energy on the pipeline connecting the electric field treatment device and the deasphalting device.

[0007] Furthermore, the Helmholtz coil electromagnetic ring includes a transverse electromagnetic ring, a vertical electromagnetic ring and an oblique electromagnetic ring to form a three-dimensional electromagnetic field.

[0008] Furthermore, the Helmholtz coil electromagnetic ring includes a coil body and a circumferentially arranged height adjuster, and the height adjuster is used to adjust the overall height of the electromagnetic ring to correspond to the height of the material in the electric field processing device.

[0009] Furthermore, the high pressure of the high pressure separation device is 1.2-1.5 MPa; The low pressure of the low pressure separation device is 0.2-0.5 MPa.

[0010] Furthermore, the treatment time of the electric field treatment device is 0.2-0.5 hours.

[0011] Furthermore, the power supply voltage in the electric field processing device is 20000-25000V. Another object of the present invention is to provide a process for a residual oil hydrotreating unit, comprising the following steps: Step 1: sending the residue oil hydrogenation unconverted oil into the machine tool oil residue hydrogenation reactor to form the residue oil hydrogenation conversion oil; Step 2: The residue oil is hydroconverted and sent to a high-pressure separation device and a low-pressure separation device for separation in sequence; Step 3: Send the residual oil hydroconversion oil into the electric field processor device, and perform magnetic field treatment through the Helmholtz coil electromagnetic coil to form purified unconverted oil and tail oil; Step 4: starting the high-frequency oscillation mechanism to oscillate and purify the unconverted oil and tail oil, suspending impurities and settling heavy impurities in the oscillated purified unconverted oil, separating the tail oil and the oscillated purified unconverted oil with different mass ratios to form reactants, separating the reactants, and treating the tail oil through a tail oil treatment device; Step 5: The bottom effluent of the reaction effluent after separation is introduced into the deasphalting device.

[0012] Furthermore, the tail oil processing device is selected from one or both of a solvent deasphalting device and a coking device.

[0013] Furthermore, the separation time of the separation device in step 2 is 30-60 minutes.

[0014] Furthermore, the magnetizing electric field treatment time of the Helmholtz coil electromagnetic ring is 0.5-2 hours.

[0015] The beneficial effects of the present invention are: 1. The converted oil after hydrogenation of the machine tool oil residue is subjected to magnetic field resonance by the electric field treatment device to form an internal magnetic field, and the converted oil after hydrogenation of the machine tool oil residue is treated to separate the converted oil and tail oil after hydrogenation of the machine tool oil residue, thereby improving the separation efficiency.

[0016] 2. Through the oscillation of the high-frequency oscillation mechanism, the large particles of impurities in the converted oil and tail oil after hydrogenation of the machine tool oil residue can be separated, so that the large particles of impurities float up and the micro particles sink, thereby improving the separation types. The electric field treatment device and the high-frequency oscillation mechanism can be processed at the same time, combining the two processes, saving the process flow, shortening the process time, and further improving the separation efficiency.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the residual oil hydroprocessing device and process method of the present invention; Figure 2 It is a front view of the residual oil hydroprocessing device and process method of the present invention; Figure 3It is a schematic structural diagram of the coil body and the height adjuster of the present invention; Figure 4 It is a structural schematic diagram of the front section shock absorbing mechanism of the present invention; Figure 5 It is a structural schematic diagram of the rear-stage shock absorbing mechanism of the present invention.

[0020] In the figure: 1. Machine tool oil residue hydrogenation reactor; 2. High-pressure separation device; 3. Low-pressure separation device; 4. Deasphalting device; 5. Electric field processing device; 51. Helmholtz coil electromagnetic coil; 511. Coil body; 512. Height adjuster; 52. Power supply; 53. Height adjuster; 6. High frequency oscillation mechanism; 7. front shock absorbing mechanism; 71. first sleeve; 72. first extension rod; 73. first swing arm; 8. rear shock absorbing mechanism; 81. second sleeve; 82. second extension rod; 83. second shaking swing arm. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0022] like Figures 1 to 5 As shown, a residue oil hydroprocessing device includes: a machine tool oil residue hydroprocessing reactor 1, a high pressure separation device 2, a low pressure separation device 3 and a deasphalting device 4 which are connected in sequence. The machine tool oil residue hydroprocessing reactor 1 performs a hydrogenation reaction on the oil residue, and then passes it into the high pressure separation device 2 for high pressure separation, and then passes it into the low pressure separation device 3 for low pressure separation. Finally, the oil residue hydroconversion oil is deasphalted by the deasphalting device 4. In this embodiment, the high pressure of the high pressure separation device 2 is 1.2-1.5MPa; the low pressure of the low pressure separation device 3 is 0.2-0.5MPa.

[0023] like Figures 1 to 5As shown, an electric field treatment device 5 is provided between the low-pressure separation device 3 and the deasphalting device 4. The electric field treatment device 5 includes at least one built-in Helmholtz coil electromagnetic coil 51 and a power supply 52, and the power supply 52 supplies power to the Helmholtz coil electromagnetic coil 51 to form an electromagnetic field in the electric field treatment device 5. In this embodiment, the Helmholtz coil electromagnetic coil 51 includes a horizontal electromagnetic coil, a vertical electromagnetic coil and an oblique electromagnetic coil to form a three-dimensional electromagnetic field. The inclination angle of the oblique electromagnetic coil is 30 degrees to 60 degrees. The power supply 52 can adopt but is not limited to an external power supply. The Helmholtz coil electromagnetic coil 51 is arranged in the shell interlayer, and the residual oil hydrogenation unconverted oil flowing out of the low-pressure separation device 3 flows in the shell, and the Helmholtz coil electromagnetic coil 51 is powered by the power supply 52.

[0024] Among them, the Helmholtz coil electromagnetic ring 51 includes a coil body 511 and a circumferentially arranged height adjuster 512. The height adjuster 512 is used to adjust the overall height of the electromagnetic ring to correspond to the height of the material in the electric field processing device 5. When the material is small, the height of the coil body 511 is appropriately lowered so that the material is in the magnetic field; when the material is large, the height of the coil body 511 is appropriately increased so that the material is in the magnetic field.

[0025] like Figures 1 to 5 As shown, a high-frequency oscillation mechanism 6 is provided at the bottom of the electric field processing device 5 to generate high-frequency oscillation for the electric field processing device 5 .

[0026] In this embodiment, the processing time of the electric field processing device 5 is 0.2-0.5 hours, and the power supply voltage in the electric field processing device 5 is 20000-25000V.

[0027] Among them, a front-end shock-absorbing mechanism 7 is arranged on the pipeline connecting the low-pressure separation device 3 and the electric field treatment device 5, and the front-end shock-absorbing mechanism 7 includes a first sleeve 71, a first extension rod 72 and a first shaking swing arm 73. The first sleeve 71 is sleeved on the pipeline connecting the low-pressure separation device 3 and the electric field treatment device 5, the first extension rod 72 is arranged on the outside of the first sleeve 71, and the first shaking swing arm 73 is arranged at one end of the first extension rod 72 away from the locking first sleeve 71. The first shaking swing arm 73 absorbs the kinetic energy on the pipeline connecting the low-pressure separation device 3 and the electric field treatment device 5. When the high-frequency oscillation mechanism 6 oscillates the electric field treatment device 5, the pipelines on both sides of the electric field treatment device 5 are prone to inaccurate docking due to long-term oscillation. The first sleeve 71 is sleeved on the pipeline to transmit the vibration of the front section of the electric field treatment device 5 to the first extension rod 72. The first extension rod 72 then transmits the vibration to the first shaking swing arm 73. The first shaking swing arm 73 absorbs the vibration on the pipeline connecting the low-pressure separation device 3 and the electric field treatment device 5, and converts the vibration into the swing of the first shaking swing arm 73, thereby eliminating the vibration, reducing the internal blockage or external docking inaccuracy of the pipeline due to vibration, improving the accuracy of separation, and protecting the safety of the equipment.

[0028] like Figures 1 to 5 As shown, a rear-end shock-absorbing mechanism 8 is arranged on the pipeline connecting the electric field treatment device 5 and the deasphalting device 4. The rear-end shock-absorbing mechanism 8 includes a second sleeve 81, a second extension rod 82 and a second shaking swing arm 83. The second sleeve 81 is sleeved on the pipeline connecting the electric field treatment device 5 and the deasphalting device 4, the second extension rod 82 is arranged on the outside of the second sleeve 81, and the second shaking swing arm 83 is arranged at one end of the second extension rod 82 away from the locking second sleeve 81. The second shaking swing arm 83 absorbs kinetic energy on the pipeline connecting the electric field treatment device 5 and the deasphalting device 4. The second sleeve 81 is sleeved on the pipeline to transmit the vibration of the rear section of the electric field treatment device 5 to the second extension rod 82. The second extension rod 82 then transmits the vibration to the second shaking swing arm 83. The second shaking swing arm 83 connects the vibration of the electric field treatment device 5 and the deasphalting device 4 on the pipeline and converts the vibration into the swing of the first shaking swing arm 73, thereby eliminating the vibration, reducing the internal blockage or external inaccurate docking of the pipeline due to vibration, improving the accuracy of separation, and protecting the safety of the equipment.

[0029] Embodiment 2: A process method of a residual oil hydroprocessing unit comprises the following steps: Step 1: Send the residue oil hydrogenation unconverted oil into the machine tool oil residue hydrogenation reactor 1 to form residue oil hydrogenation conversion oil; Step 2: The residue oil hydrogenation conversion oil is successively sent to the high-pressure separation device 2 and the low-pressure separation device 3 for separation; The separation time of the separation device is 30-60 minutes. Step 3: Send the residue oil hydrogenation conversion oil into the electric field processor device, and perform magnetic field treatment through the Helmholtz coil electromagnetic ring 51 to form purified unconverted oil and tail oil; The magnetization electric field treatment time of the Helmholtz coil electromagnetic ring 51 is 0.5-2 hours. Step 4: Start the high-frequency oscillation mechanism 6, oscillate and purify the unconverted oil and tail oil, suspend impurities and settle heavy impurities in the oscillated purified unconverted oil, separate the tail oil and the oscillation purified unconverted oil with different mass ratios to form reactants, separate the reactants, and treat the tail oil through the tail oil treatment device; Step 5: The bottom effluent of the reaction effluent after separation is introduced into the deasphalting device 4.

[0030] In this embodiment, the tail oil processing device is selected from one or both of a solvent deasphalting device 4 and a coking device.

[0031] In summary: the conversion oil after hydrogenation of the machine tool oil residue is subjected to magnetic field resonance by the electric field treatment device 5 to form an internal magnetic field, the conversion oil after hydrogenation of the machine tool oil residue is treated, and the conversion oil after hydrogenation of the machine tool oil residue and the tail oil are separated to improve the separation efficiency. Through the oscillation of the high-frequency oscillation mechanism 6, the conversion oil after hydrogenation of the machine tool oil residue and the large particle impurities in the tail oil can be separated, so that the large particle impurities float up and the micro particles sink, and the separation type is improved, and the electric field treatment device 5 and the high-frequency oscillation mechanism 6 can be processed at the same time, combining the processes of the two, saving the process flow, shortening the process time, and improving the separation efficiency in one step.

[0032] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0033] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A residual oil hydroprocessing device, characterized in that: Including the following connected in sequence: A machine tool oil residue hydrogenation reactor (1), a high-pressure separation device (2), a low-pressure separation device (3) and a deasphalting device (4), wherein an electric field treatment device (5) is provided between the low-pressure separation device (3) and the deasphalting device (4); The electric field processing device (5) comprises at least one built-in Helmholtz coil electromagnetic ring (51) and a power supply body (52), wherein the power supply body (52) supplies power to the Helmholtz coil electromagnetic ring (51) to form an electromagnetic field in the electric field processing device (5); A high-frequency oscillation mechanism (6) is provided at the bottom of the electric field processing device (5) to generate high-frequency oscillation for the electric field processing device (5); A front-end shock-absorbing mechanism (7) is provided on the pipeline connecting the low-pressure separation device (3) and the electric field treatment device (5), and the front-end shock-absorbing mechanism (7) comprises a first sleeve (71), a first extension rod (72) and a first shaking swing arm (73), wherein the first sleeve (71) is sleeved on the pipeline connecting the low-pressure separation device (3) and the electric field treatment device (5), the first extension rod (72) is arranged on the outside of the first sleeve (71), the first shaking swing arm (73) is arranged at one end of the first extension rod (72) away from the locking first sleeve (71), and the first shaking swing arm (73) absorbs kinetic energy on the pipeline connecting the low-pressure separation device (3) and the electric field treatment device (5); A rear-end shock absorbing mechanism (8) is arranged on the pipeline connecting the electric field treatment device (5) and the deasphalting device (4), and the rear-end shock absorbing mechanism (8) comprises a second sleeve (81), a second extension rod (82) and a second shaking swing arm (83); the second sleeve (81) is sleeved on the pipeline connecting the electric field treatment device (5) and the deasphalting device (4); the second extension rod (82) is arranged on the outside of the second sleeve (81); the second shaking swing arm (83) is arranged at one end of the second extension rod (82) away from the locking second sleeve (81); the second shaking swing arm (83) absorbs kinetic energy on the pipeline connecting the electric field treatment device (5) and the deasphalting device (4).

2. A residual oil hydroprocessing device according to claim 1, characterized in that: The Helmholtz coil electromagnetic ring (51) comprises a transverse electromagnetic ring, a vertical electromagnetic ring and an oblique electromagnetic ring to form a three-dimensional electromagnetic field.

3. A residual oil hydroprocessing device as claimed in claim 2, characterized in that: The Helmholtz coil electromagnetic ring (51) comprises a coil body (511) and a circumferentially arranged height adjuster (512), wherein the height adjuster (512) is used to adjust the overall height of the electromagnetic ring to correspond to the height of the material in the electric field processing device (5).

4. A residual oil hydroprocessing device as claimed in claim 3, characterized in that: The high pressure of the high pressure separation device (2) is 1.2-1.5 MPa; The low pressure of the low pressure separation device (3) is 0.2-0.5 MPa.

5. A residual oil hydroprocessing device as claimed in claim 4, characterized in that: The treatment time of the electric field treatment device (5) is 0.2-0.5 hours.

6. A residue oil hydroprocessing device as claimed in claim 5, characterized in that: The power supply voltage in the electric field processing device (5) is 20000-25000V.

7. A process method for a residue hydrotreating unit as claimed in claim 6, characterized in that: A residue oil hydroprocessing unit comprising the residue oil hydroprocessing unit according to any one of claims 1 to 6; The steps include: Step 1: sending the residual oil hydrogenation unconverted oil into the machine tool oil residue hydrogenation reactor (1) to form the residual oil hydrogenation conversion oil; Step 2: The residual oil hydroconversion oil is sequentially sent to a high-pressure separation device (2) and a low-pressure separation device (3) for separation; Step 3: sending the residual oil hydroconversion oil into an electric field processor device, and subjecting it to magnetic field treatment through a Helmholtz coil electromagnetic coil (51), thereby forming purified unconverted oil and tail oil; Step 4: starting the high-frequency oscillation mechanism (6) to oscillate and purify the unconverted oil and tail oil, suspending impurities and settling heavy impurities in the oscillated purified unconverted oil, separating the tail oil and the oscillated purified unconverted oil of different mass ratios to form reactants, separating the reactants, and treating the tail oil through a tail oil treatment device; Step 5: The bottom effluent of the reaction effluent after separation is introduced into the deasphalting device (4).

8. A process method for a residue oil hydrotreating device as claimed in claim 7, characterized in that: The tail oil processing device is selected from one or both of a solvent deasphalting device (4) and a coking device.

9. A process method for a residue oil hydrotreating unit as claimed in claim 8, characterized in that: The separation time of the separation device in step 2 is 30-60 minutes.

10. A process method for a residue oil hydroprocessing unit according to claim 9, characterized in that: The magnetizing electric field treatment time of the Helmholtz coil electromagnetic ring (51) is 0.5-2 hours.

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