Liquid hydrocarbon desulfurization reactor and separation equipment

Abstract

The present invention discloses a liquid hydrocarbon desulfurization reactor, comprising: a first reaction tube and a second reaction tube, wherein the first reaction tube contains a first reaction chamber, one end of the first reaction chamber is provided with a first liquid inlet and a second liquid inlet, the second reaction tube is sleeved on the outside of the first reaction tube and a second reaction chamber is formed between the second reaction tube and the first reaction tube, the end of the second reaction chamber away from the first liquid inlet is communicated with the other end of the first reaction chamber, and the end of the second reaction chamber close to the first liquid inlet is provided with a liquid outlet; a micro-mixing reaction unit, a rectification unit, a liquid collection and distribution unit, a micro-contact reaction unit and a steady flow separation unit are provided in the first reaction chamber and the second reaction chamber; the reactor adopts a structural form in which the first reaction tube and the second reaction tube are sleeved to form a two-stage reaction tube with liquid deflection, thereby extending the contact and mass transfer time of the reaction medium and the reaction time, having a large processing capacity and a high removal rate, and having a compact structure, saving space, and facilitating the installation and arrangement of the reactor.

Description

Technical Field

[0001] The present invention belongs to the technical field of desulfurization reaction, and more specifically, relates to a liquid hydrocarbon desulfurization reactor and separation equipment. Background Art

[0002] In the petrochemical enterprise production and processing flow, the oil product processing device produces and obtains liquefied gas with hydrogen sulfide and mercaptan, hydrogen sulfide is a highly hazardous medium, mercaptan is a kind of organic sulfide, smelly, corrosive, affects the product quality of liquefied gas, usually the refinery liquefied gas treatment is divided into two steps, earlier carries out the hydrogen sulfide removal process, then carries out the mercaptan removal process. Because mercaptan is that weakly acidic is easy to react with the strong basic sodium hydroxide, and generates the sodium mercaptide that is dissolved in alkali lye, therefore, the liquefied gas mercaptan removal treatment process uses alkali lye to remove the mercaptan in the refinery liquefied gas usually, and alkali lye is 15% (weight) sodium hydroxide solution. At present, in the petrochemical enterprise liquefied gas mercaptan removal device, adopt tower vessel or fiber membrane reactor more as liquefied gas desulfurization equipment, in tower vessel or fiber membrane reactor, liquefied gas carries out hydrocarbon-water two-phase liquid-liquid contact with alkali lye and generates sodium mercaptide by liquid-liquid interface mercaptan and sodium hydroxide reaction, and sodium mercaptide is dissolved in alkali lye and separates with liquefied gas.

[0003] In recent years, large-scale refineries and integrated refining and chemical processing have become the development trend of oil product processing. Reducing oil consumption and increasing chemical production have become the focus of enterprises to improve economic efficiency. Because liquefied gas produced by catalytic cracking technology has a high propylene content, it can achieve the goal of increasing propylene production and increasing the production of feedstock for downstream chemical products. Therefore, many refineries have increased investment in large-scale catalytic cracking units to increase the production of catalytic cracking liquefied gas. Compared with the 300-3000ppm (weight) mercaptan sulfur content of liquefied gas from other refineries, catalytic cracking liquefied gas has a low mercaptan sulfur content, typically 30-100ppm (weight) mercaptan sulfur. With the construction and operation of large-scale catalytic cracking units and the adaptive modification of existing units, the large-scale refining and processing of catalytic cracking liquefied gas, with low mercaptan sulfur content and dilute concentration, has led to problems such as insufficient processing capacity and reduced desulfurization efficiency of existing desulfurization equipment, as well as difficulties in implementing adaptive modifications due to space constraints. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and provide a liquid hydrocarbon desulfurization reactor and separation equipment. The reactor adopts a structural form in which a first reaction tube and a second reaction tube are nested to form a two-stage reaction tube with liquid deflection, thereby extending the contact and mass transfer time of the reaction medium and the reaction time. It has a large processing capacity, high mass transfer efficiency, high removal rate, and a compact structure that saves space and is easy to install and arrange the reactor.

[0005] In order to achieve the above object, the present invention provides a liquid hydrocarbon desulfurization reactor, which includes:

[0006] a first reaction tube and a second reaction tube, wherein the first reaction tube contains a first reaction chamber, one end of the first reaction chamber is provided with a first liquid inlet and a second liquid inlet, the second reaction tube is sleeved on the outside of the first reaction tube and forms a second reaction chamber between the second reaction tube and the first reaction tube, one end of the second reaction chamber away from the first liquid inlet is connected to the other end of the first reaction chamber, and the end of the second reaction chamber close to the first liquid inlet is provided with a liquid outlet;

[0007] A micro-mixing reaction unit, a rectifying unit, a liquid collecting and distributing unit, a micro-contact reaction unit and a steady flow separation unit are sequentially arranged in the first reaction chamber and the second reaction chamber along the flow direction of the liquid.

[0008] Optionally, a liquid nozzle is provided at one end of the first reaction chamber close to the second liquid inlet, and the liquid nozzle is connected to the second liquid inlet and is used to spray the alkali solution.

[0009] Optionally, the micro-mixing reaction unit includes at least one of a grid plate, an annular plate, and a spiral plate.

[0010] Optionally, a plurality of protrusions are provided on the outer side of the micro-mixing reaction unit in the first reaction chamber, and the plurality of protrusions are provided on the inner wall of the first reaction tube.

[0011] Optionally, the other end of the first reaction tube is provided with a connecting port for connecting with the second reaction tube, and the rectifying unit is arranged in the connecting port. The rectifying unit includes a perforated metal corrugated plate and a hydrophilic-hydrophobic mixed mesh plate stacked along the flow direction of the liquid.

[0012] Optionally, the liquid collecting and distribution unit includes a liquid collecting cylinder and a liquid collecting and distribution plate arranged in sequence in the second reaction chamber along the flow direction of the liquid, and multiple liquid collecting cylinders are connected to the liquid collecting and distribution plate at intervals. The liquid collecting and distribution plate is provided with multiple continuous phase distribution holes and multiple dispersed phase distribution holes. The continuous phase distribution holes are located outside the liquid collecting cylinder, and the dispersed phase distribution holes are located inside the liquid collecting cylinder.

[0013] Optionally, the micro-contact reaction unit includes a metal filler.

[0014] Optionally, the steady flow separation unit is arranged upstream of the liquid outlet, and the steady flow separation unit includes multiple layers of coalescing wire mesh.

[0015] The present invention also provides a separation device, which includes the above-mentioned liquid hydrocarbon desulfurization reactor.

[0016] Optionally, the liquid hydrocarbon desulfurization reactor is disposed in a shell of the separation device, the first liquid inlet and the second liquid inlet are exposed, and a liquefied gas outlet and an alkaline solution outlet are provided on the shell.

[0017] The present invention provides a liquid hydrocarbon desulfurization reactor and separation equipment, which has the following beneficial effects: the reactor adopts a structure in which a first reaction tube and a second reaction tube are nested to form a two-stage reaction tube with liquid baffles, thereby extending the contact mass transfer time and reaction time of the reaction medium, achieving large processing capacity, high mass transfer efficiency, high removal rate, and a compact structure, saving space, and facilitating the installation and arrangement of the reactor; the two-stage reaction tube structure with liquid baffles of the device extends the liquid-liquid phase contact mass transfer time and reaction time of hydrocarbon-water, ensures sufficient liquid-liquid contact, and solves the problem of dilute concentration component mercaptan in catalytic cracking liquefied gas to liquid-liquid phase The problem of low interfacial mass transfer driving force is solved by effectively contacting and converting the dispersed phase and the continuous phase, thereby improving the reaction depth of the dilute concentration component mercaptan in the liquefied gas and the sodium hydroxide in the alkaline solution, improving the removal rate of mercaptan, and improving the product quality of the refined liquefied gas, thereby achieving the purpose of efficient deep desulfurization. The reactor can be flexibly installed in various separation equipment such as horizontal or vertical ones. It is simple to install, convenient to pipe, and saves equipment space. It is suitable for large-scale liquefied gas processing occasions, and can meet the requirements of increasing the quantity or quality of liquefied gas processing with minimal changes to the existing process, thereby improving the feasibility and convenience of the transformation.

[0018] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0020] Figure 1 A schematic structural diagram of a liquid hydrocarbon desulfurization reactor according to an embodiment of the present invention is shown.

[0021] Figure 2 Shown Figure 1 Schematic diagram of the A-direction structure.

[0022] Figure 3 Shown Figure 1 Schematic diagram of the B-direction structure.

[0023] Figure 4 A schematic structural diagram of a liquid collecting and distributing unit of a liquid hydrocarbon desulfurization reactor according to an embodiment of the present invention is shown.

[0024] Figure 5A structural schematic diagram of a separation device according to an embodiment of the present invention is shown.

[0025] Description of reference numerals:

[0026] 1. First liquid inlet; 2. Second liquid inlet; 3. First reaction tube; 4. Second reaction tube; 5. Liquid outlet; 6. Liquid nozzle; 7. Micro-mixing reaction unit; 8. Rectification unit; 9. Micro-contact reaction unit; 10. Steady flow separation unit; 11. Liquid collection and distribution plate; 12. Dispersed phase distribution hole; 13. Continuous phase distribution hole; 14. Liquid collection cylinder; 15. Liquefied gas outlet; 16. Alkali solution outlet; 17. Shell. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0028] The present invention provides a liquid hydrocarbon desulfurization reactor, which comprises:

[0029] a first reaction tube and a second reaction tube, wherein the first reaction tube contains a first reaction chamber, one end of the first reaction chamber is provided with a first liquid inlet and a second liquid inlet, the second reaction tube is sleeved on the outside of the first reaction tube and a second reaction chamber is formed between the second reaction tube and the first reaction tube, one end of the second reaction chamber away from the first liquid inlet is connected to the other end of the first reaction chamber, and the end of the second reaction chamber close to the first liquid inlet is provided with a liquid outlet;

[0030] A micro-mixing reaction unit, a rectifying unit, a liquid collecting and distributing unit, a micro-contact reaction unit and a steady flow separation unit are sequentially arranged in the first reaction chamber and the second reaction chamber along the flow direction of the liquid.

[0031] Specifically, a two-stage reaction tube with liquid deflection is formed by a structure in which the first reaction tube and the second reaction tube are set together, which prolongs the contact and mass transfer time of the reaction medium and the reaction time, ensures sufficient liquid-liquid contact, and solves the problem of low driving force for mass transfer of dilute concentration component mercaptan to the liquid-liquid interface in catalytic cracking liquefied gas. By setting a micro-mixing reaction unit, a rectification unit, a liquid collection and distribution unit, a micro-contact reaction unit and a steady flow separation unit, effective contact and conversion between the dispersed phase and the continuous phase are achieved, thereby improving the reaction depth of the dilute concentration component mercaptan in the liquefied gas and the sodium hydroxide in the alkaline solution, improving the removal rate of mercaptan, and improving the product quality of the refined liquefied gas, thereby achieving the purpose of efficient deep desulfurization. At the same time, this two-stage reaction tube structure with liquid deflection makes the reactor compact and can be flexibly installed in various separation equipment such as horizontal or vertical separation equipment. It is simple to install, convenient to pipe, and saves equipment space. It is suitable for large-scale liquefied gas processing occasions and can meet the requirements of increasing the quantity or quality of liquefied gas processing with minimal changes to the existing process, thereby improving the feasibility and convenience of the transformation.

[0032] Optionally, a liquid nozzle is provided at one end of the first reaction chamber close to the second liquid inlet, and the liquid nozzle is connected to the second liquid inlet and is used for spraying the alkali solution.

[0033] Specifically, the liquid nozzle is provided with a plurality of injection holes uniformly distributed in the first reaction tube, and the injection hole diameter is 0.5mm-3mm; the sulfur-containing liquefied gas enters the reactor from the first liquid inlet, flows through the first reaction tube and the second reaction tube in sequence, and flows out from the liquid outlet; the alkaline solution enters the reactor from the second liquid inlet and is sprayed by the liquid nozzle to disperse into small droplets with a particle size of 10-80μm. The small droplets are in a dispersed state and rapidly diffuse into the sulfur-containing liquefied gas, and flow through the micro-mixing reaction unit in parallel with the liquefied gas.

[0034] Optionally, the micro-mixing reaction unit includes at least one of a grid plate, an annular plate, and a spiral plate.

[0035] Specifically, the hydraulic diameter of the micro-mixing reaction unit is 2 to 15 mm. In the micro-mixing reaction unit, along the flow direction, the dilute concentration component mercaptan in the sulfur-containing liquefied gas and the sodium hydroxide in the alkaline solution fully contact and chemically react at the hydrocarbon-water liquid-liquid interface to generate sodium mercaptide and water.

[0036] Optionally, a plurality of protrusions are provided on the outer side of the micro-mixing reaction unit in the first reaction chamber, and the plurality of protrusions are provided on the inner wall of the first reaction tube.

[0037] Specifically, the raised portion is a linear raised portion or a spiral raised portion. Under the combined action of the first reaction tube where the micro-mixing reaction unit is located and the raised portion on the inner wall side, the liquid flow from the center of the first reaction tube to the end of the tube wall is turbulent, the droplets are rapidly dispersed-polymerized-dispersed, and the liquid-liquid interface is rapidly updated, thereby promoting and driving the reaction between the dilute concentration component thiol and sodium hydroxide at the hydrocarbon-water liquid-liquid interface.

[0038] Optionally, a connecting port for connecting to the second reaction tube is provided at the other end of the first reaction tube, and a rectifying unit is provided in the connecting port. The rectifying unit includes a perforated metal corrugated plate and a hydrophilic-hydrophobic mixed mesh plate stacked along the flow direction of the liquid.

[0039] Specifically, the diameter of the holes of the perforated metal corrugated plate is 0.5 mm to 12 mm; through the perforated metal corrugated plate and the hydrophilic-hydrophobic mixed mesh plate of the rectification unit, the water phase droplets quickly gather and merge, and the hydrocarbon phase droplets also quickly gather and merge.

[0040] Optionally, the liquid collecting and distribution unit includes a liquid collecting cylinder and a liquid collecting and distribution plate arranged in sequence in the second reaction chamber along the flow direction of the liquid, and multiple liquid collecting cylinders are connected to the liquid collecting and distribution plate at intervals. The liquid collecting and distribution plate is provided with multiple continuous phase distribution holes and multiple dispersed phase distribution holes. The continuous phase distribution holes are located outside the liquid collecting cylinder, and the dispersed phase distribution holes are located inside the liquid collecting cylinder.

[0041] Specifically, the liquid collecting distribution plate is provided with continuous phase distribution holes, dispersed phase distribution holes and a liquid collecting cylinder. The continuous phase distribution holes and the dispersed phase distribution holes include circular holes, square holes and rectangular holes. The aperture of the dispersed phase distribution holes is 0.5mm~8mm, and the height of the liquid collecting cylinder is 50mm~1000mm; the liquid collecting distribution plate buffers and gathers the incoming liquid, and redistributes the liquefied gas and alkali solution in the second reaction chamber through the liquid collecting distribution plate, with the liquefied gas as the dispersed phase and the alkali solution as the continuous phase.

[0042] Optionally, the micro-contact reaction unit includes a metal filler.

[0043] Specifically, the metal filler is a structured filler or a mixture of a structured filler and a random filler; the liquefied gas and the alkali solution come into secondary contact through the surface of the metal filler. As the contact surface is updated, unreacted mercaptans in the liquefied gas react with sodium hydroxide in the alkali solution to generate sodium mercaptide and water, and the mercaptans are deeply removed.

[0044] Optionally, the steady flow separation unit is arranged upstream of the liquid outlet, and the steady flow separation unit includes multiple layers of coalescing wire mesh.

[0045] Specifically, the end of the second reaction tube is connected to the liquid outlet, and a steady flow separation unit is provided near the liquid outlet. The mixed liquid is clarified through the multi-layer coalescing wire mesh of the steady flow separation unit and leaves the second reaction chamber and flows out through the liquid outlet.

[0046] Optionally, the liquid outlet is an annular opening.

[0047] The present invention also provides a separation device, which includes the above-mentioned liquid hydrocarbon desulfurization reactor.

[0048] Optionally, the liquid hydrocarbon desulfurization reactor is arranged in the shell of the separation equipment, the first liquid inlet and the second liquid inlet are exposed, and the shell is provided with a liquefied gas outlet and an alkaline solution outlet.

[0049] like Figures 1 to 4 As shown, the present invention provides a liquid hydrocarbon desulfurization reactor, the reactor comprising:

[0050] A first reaction tube 3 and a second reaction tube 4, wherein the first reaction tube 3 contains a first reaction chamber, and one end of the first reaction chamber is provided with a first liquid inlet 1 and a second liquid inlet 2. The second reaction tube 4 is sleeved on the outside of the first reaction tube 3 and forms a second reaction chamber between the second reaction tube 4 and the first reaction tube 3. The end of the second reaction chamber away from the first liquid inlet 1 is connected to the other end of the first reaction chamber, and the end of the second reaction chamber close to the first liquid inlet 1 is provided with a liquid outlet 5.

[0051] A micro-mixing reaction unit 7, a rectifying unit 8, a liquid collecting and distributing unit, a micro-contact reaction unit 9 and a steady flow separation unit 10 are sequentially arranged in the first reaction chamber and the second reaction chamber along the flow direction of the liquid.

[0052] In this embodiment, a liquid nozzle 6 is provided at one end of the first reaction chamber close to the second liquid inlet 2 , and the liquid nozzle 6 is connected to the second liquid inlet 2 and is used to spray the alkali solution.

[0053] In this embodiment, the micro-mixing reaction unit 7 includes at least one of a grid plate, an annular plate, and a spiral plate.

[0054] In this embodiment, a plurality of protrusions are provided on the outer side of the micro-mixing reaction unit 7 in the first reaction chamber, and the plurality of protrusions are provided on the inner wall of the first reaction tube 3 .

[0055] In this embodiment, a connecting port for connecting to the second reaction tube 4 is provided at the other end of the first reaction tube 3, and a rectifying unit 8 is arranged in the connecting port. The rectifying unit 8 includes a perforated metal corrugated plate and a hydrophilic-hydrophobic mixed mesh plate stacked along the flow direction of the liquid.

[0056] In this embodiment, the liquid collecting and distribution unit includes a liquid collecting cylinder 14 and a liquid collecting and distribution plate 11 which are arranged in sequence in the second reaction chamber along the flow direction of the liquid. Multiple liquid collecting cylinders 14 are connected to the liquid collecting and distribution plate 11 at intervals. The liquid collecting and distribution plate 11 is provided with multiple dispersed phase distribution holes 12 and multiple continuous phase distribution holes 13. The dispersed phase distribution holes 12 are located inside the liquid collecting cylinder 14, and the continuous phase distribution holes 13 are located outside the liquid collecting cylinder 14.

[0057] In this embodiment, the micro-contact reaction unit 9 includes a metal filler.

[0058] In this embodiment, the steady flow separation unit 10 is disposed upstream of the liquid outlet 5 , and the steady flow separation unit 10 includes multiple layers of coalescing wire mesh.

[0059] like Figure 5 As shown, the present invention also provides a separation device, which includes the above-mentioned liquid hydrocarbon desulfurization reactor.

[0060] In this embodiment, the liquid hydrocarbon desulfurization reactor is disposed in a housing 17 of the separation device, with the first liquid inlet 1 and the second liquid inlet 2 exposed. The housing 17 is provided with a liquefied gas outlet 15 and an alkaline solution outlet 16 .

[0061] In summary, when the liquid desulfurization reactor provided by the present invention is used, the sulfur-containing liquefied gas enters the reactor from the first liquid inlet 1, flows through the first reaction tube 3 and the second reaction tube 4 in sequence, and flows out from the liquid outlet 5; the alkali solution enters the reactor from the second liquid inlet 2 and is sprayed by the liquid nozzle 6 to disperse into small droplets with a particle size of 10-80 μm. The small droplets are in a dispersed state and rapidly diffuse into the sulfur-containing liquefied gas, and flow through the micro-mixing reaction unit 7 co-currently with the liquefied gas. In the micro-mixing reaction unit 7, along the flow direction, the dilute concentration component mercaptan in the sulfur-containing liquefied gas and the sodium hydroxide in the alkali solution fully contact and chemically react at the hydrocarbon-water liquid-liquid interface to produce sodium mercaptide and water; under the combined action of the first reaction tube 3 where the micro-mixing reaction unit 7 is located and the raised portion on the inner wall side, the liquid flow from the center of the first reaction tube 3 to the end of the tube wall is turbulent, the droplets are rapidly dispersed-polymerized-dispersed, and the liquid-liquid phase interface is rapidly updated, which promotes and drives the reaction between the dilute concentration component mercaptan and the sodium hydroxide at the hydrocarbon-water liquid-liquid phase interface. After the primary reaction, the mixed liquid enters the rectification unit 8 at the end of the first reaction chamber. Passing through the perforated metal corrugated plates and hydrophilic-hydrophobic mixed mesh of the rectification unit 8, the aqueous phase droplets rapidly coalesce, and the hydrocarbon phase droplets also rapidly coalesce. The liquid then flows out of the first reaction chamber, redirecting its flow direction and entering the second reaction chamber. The liquid is then buffered and collected by the liquid collection and distribution plate 11 of the liquid collection and distribution unit. This plate redistributes the liquefied gas and alkali solution within the second reaction chamber, with the liquefied gas serving as the dispersed phase and the alkali solution serving as the continuous phase. The liquefied gas and alkali solution then come into contact again on the metal packing surface of the micro-contact reaction unit 9. As the contact surface is renewed, unreacted mercaptans in the liquefied gas react with the sodium hydroxide in the alkali solution to form sodium mercaptide and water, effectively removing the mercaptans. The mixed liquid then exits the micro-contact reaction unit 9 along the second reaction tube 4 and enters the steady-flow separation unit 10. Passing through the multi-layer coalescing mesh of the steady-flow separation unit 10, the mixed liquid is clarified and exits the second reaction chamber, flowing out through the liquid outlet 5. The liquid outlet 5 can be an annular opening located at the bottom or side of the reactor, which is convenient for the reactor to be installed on the downstream separation equipment, saves space and is easy to install, and facilitates the clarification of the mixed liquid after the reaction and flows into the downstream connected separation equipment.

[0062] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A liquid hydrocarbon desulfurization reactor, characterized in that: The reactor comprises: a first reaction tube and a second reaction tube, wherein the first reaction tube contains a first reaction chamber, one end of the first reaction chamber is provided with a first liquid inlet and a second liquid inlet, the second reaction tube is sleeved on the outside of the first reaction tube and forms a second reaction chamber between the second reaction tube and the first reaction tube, one end of the second reaction chamber away from the first liquid inlet is connected to the other end of the first reaction chamber, and the end of the second reaction chamber close to the first liquid inlet is provided with a liquid outlet; The first reaction chamber and the second reaction chamber are provided with a micro-mixing reaction unit, a rectifying unit, a liquid collecting and distributing unit, a micro-contact reaction unit and a steady flow separation unit in sequence along the flow direction of the liquid; The micro-mixing reaction unit includes at least one of a grid plate, an annular plate, and a spiral plate; The rectifying unit comprises a perforated metal corrugated plate and a hydrophilic-hydrophobic mixed woven mesh plate stacked along the flow direction of the liquid; The liquid collecting and distributing unit comprises a liquid collecting cylinder and a liquid collecting and distributing plate sequentially arranged in the second reaction chamber along the flow direction of the liquid, and a plurality of the liquid collecting cylinders are connected to the liquid collecting and distributing plate at intervals; The micro-contact reaction unit includes a metal filler; The steady flow separation unit is arranged upstream of the liquid outlet, and the steady flow separation unit includes multiple layers of coalescing wire mesh.

2. The liquid hydrocarbon desulfurization reactor according to claim 1, characterized in that: A liquid nozzle is provided at one end of the first reaction chamber close to the second liquid inlet, and the liquid nozzle is connected to the second liquid inlet and is used for spraying alkali solution.

3. The liquid hydrocarbon desulfurization reactor according to claim 1, characterized in that: A plurality of protrusions are provided on the outer side of the micro-mixing reaction unit in the first reaction chamber, and the plurality of protrusions are provided on the inner wall of the first reaction tube.

4. The liquid hydrocarbon desulfurization reactor according to claim 1, characterized in that: The other end of the first reaction tube is provided with a communication port for communicating with the second reaction tube, and the rectifying unit is arranged in the communication port.

5. The liquid hydrocarbon desulfurization reactor according to claim 1, characterized in that: The liquid collecting and distributing plate is provided with a plurality of continuous phase distribution holes and a plurality of dispersed phase distribution holes. The continuous phase distribution holes are located outside the liquid collecting cylinder, and the dispersed phase distribution holes are located inside the liquid collecting cylinder.

6. A separation device, characterized in that: The equipment comprises the liquid hydrocarbon desulfurization reactor according to any one of claims 1 to 5.

7. The separation device according to claim 6, characterized in that The liquid hydrocarbon desulfurization reactor is arranged in the shell of the separation equipment, the first liquid inlet and the second liquid inlet are exposed, and the shell is provided with a liquefied gas outlet and an alkaline solution outlet.

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