A combinable tower continuous reaction system

Abstract

This invention relates to the field of chemical process technology and discloses a combinable tower-type continuous reaction system, including a feeding system, a reactor, and a discharging system. The feeding system and the discharging system are respectively connected to the inlet and outlet of the reactor. The reactor includes a top tower cover and a bottom tower vessel. Several structurally identical tower sections are connected between the top tower cover and the bottom tower vessel. A steam outlet pipe is provided at the center of each tower section. The inlet of the steam outlet pipe of the upper tower section is connected to the interior of the lower tower section, and the inlet of the steam outlet pipe of the bottom tower section is connected to the interior of the bottom tower vessel. The outlet of the steam outlet pipe extends outside the tower section. This invention can draw material vapor from the top of each tower section and condense small molecules to promote the reaction equilibrium to shift to the right. It can realize continuous production of fractionation, mixing, fed-batch reaction, total reflux reaction, and reflux condensation reaction.

Description

Technical Field

[0001] This invention relates to the field of chemical process technology, and more specifically to a combinable tower-type continuous reaction system. Background Technology

[0002] Currently, tower-type continuous reactors are used as a single, integrated process, primarily for distillation, absorption, desorption, and extraction. They can also be used as reactors for gas-liquid phase reactions such as sulfonation, hydrogenation, halogenation, and oxidation. Existing technology does not yet include tower-type continuous reactors that can extract material vapors and condensed small molecules from multiple points within the reactor core. Therefore, current tower-type continuous reactors cannot achieve continuous production of polymerization and condensation reactions. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a combinable tower-type continuous reaction system.

[0004] To achieve the above objectives, the technical solution of the present invention is: a combinable tower-type continuous reaction system, comprising a feeding system, a reactor, and a discharging system;

[0005] The feeding system includes a process water pipeline, a reactant pipeline, a fed material pipeline, and several circulating feed units. The discharge system includes a crude product pipeline, a tail gas discharge pipeline, an aqueous phase discharge pipeline, and an oil phase recovery pipeline. The reactor includes a top cover and a bottom vessel. Several identical tower sections are connected between the top cover and the bottom vessel, and these sections are connected sequentially from top to bottom. Each tower section and the bottom vessel is provided with a feed inlet and a circulating liquid outlet. Each tower section is also provided with a drain outlet and an overflow outlet. The bottom vessel is also provided with a discharge outlet and a bottom outlet. The discharge outlet and the bottom outlet are connected to the crude product pipeline. A steam outlet pipe is provided at the center of each tower section. The steam outlet pipe inlet of the upper tower section is connected to the interior of the lower tower section, and the steam outlet pipe inlet of the bottom tower section is connected to the interior of the bottom vessel. The steam outlet pipe outlet extends outside the tower section. A steam outlet is provided at the top of the top cover.

[0006] The number of circulating feed units is the same as the total number of tower sections and reboilers. Each tower section and reboiler corresponds to one circulating feed unit. The aqueous phase outlet of the circulating feed unit is connected to the aqueous phase discharge pipeline, the oil phase outlet is connected to the oil phase discharge pipeline, the tail gas outlet is connected to the tail gas discharge pipeline, and the material outlet is connected to the feed inlet. The reactant pipeline and the steam outlet at the top of the tower cover are both connected to the circulating feed unit of the top tower section. The feed material pipeline and the process water pipeline are connected to each circulating feed unit. The circulating liquid outlet of each tower section is connected to the circulating feed unit corresponding to that tower section. The circulating liquid outlet of the reboiler is connected to the circulating feed unit corresponding to that reboiler. The steam outlet, overflow port, and liquid outlet of the upper tower section are all connected to the circulating feed unit of the lower tower section. The steam outlet, overflow port, and liquid outlet of the bottom tower section are connected to the circulating feed unit of the reboiler.

[0007] Furthermore, the circulating feed unit includes a condenser, a water separator, and a pipeline mixer. The reactant pipeline is connected to the inlet of the pipeline mixer corresponding to the top tower section. The feedstock pipeline is connected to the inlet of each pipeline mixer. One branch of the process water pipeline is connected to the top inlet of the water separator, and the other branch is connected to the feedstock pipeline. The steam outlet at the top of the tower cover is connected to the inlet of the condenser corresponding to the top tower section. The condenser's aqueous phase outlet is connected to the aqueous phase discharge pipeline, and its oil phase outlet is connected to the top inlet of the water separator. The tail gas outlet at the top of the water separator is connected to the tail gas outlet. The gas discharge pipeline is connected to the upper reflux liquid outlet of the water separator, and one branch of the upper reflux liquid pipeline is connected to the inlet of the pipeline mixer and the other branch is connected to the oil phase production pipeline. A lower reflux liquid pipeline is connected between the bottom outlet of the water separator and the top reflux liquid inlet. The lower reflux liquid pipeline has three branches, one of which is connected to the inlet of the pipeline mixer and the other two branches are connected to the water phase discharge pipeline. The circulating liquid outlet is connected to the corresponding pipeline mixer inlet, and the pipeline mixer outlet is connected to the corresponding feed inlet.

[0008] The steam outlet of the upper column section is connected to the condenser inlet of the corresponding lower column section. The overflow port and drain port of the upper column section are both connected to the pipeline mixer inlet of the corresponding lower column section. The steam outlet of the bottom column section is connected to the condenser inlet of the corresponding bottom column. The overflow port and drain port of the bottom column section are both connected to the pipeline mixer inlet of the corresponding bottom column.

[0009] Furthermore, the exhaust gas discharge pipeline is equipped with positive and negative pressure liquid seal tanks.

[0010] Furthermore, a cooler is provided on the crude product pipeline.

[0011] Furthermore, both the tower section and the tower bottom are equipped with a packing layer and a perforated plate, with the perforated plate located below the packing layer.

[0012] Furthermore, the packing layer and the perforated plate are located between the feed inlet and the circulating liquid outlet.

[0013] Furthermore, the outer walls of the tower bottom, tower cover, and tower sections are all equipped with jacketed heat exchangers, with the inlet of the jacketed heat exchanger connected to a steam pipeline and the outlet connected to a condensate pipeline.

[0014] Furthermore, the feed inlet and drain outlet of the tower section are arranged opposite each other and located at the lower end of the tower section, while the circulating liquid outlet and overflow outlet of the tower section are located at the upper end of the tower section, and the overflow outlet is higher than the circulating liquid outlet.

[0015] Furthermore, the feed inlet of the column is located at the lower end of the column, the circulating liquid outlet and the discharge outlet of the column are located at the upper end of the column, and the discharge outlet is higher than the circulating liquid outlet. The bottom opening of the column is located at the bottom of the column.

[0016] The beneficial effects of this invention are as follows: The combinable tower-type continuous reaction system of this invention consists of a tower lid, several tower sections, and a tower reboiler. Material vapor and condensed small molecules can be drawn from the top of each tower section to shift the reaction equilibrium to the right. This invention is applicable to various physical and chemical processes, embodying the design philosophy of multi-functionality and versatility. It can realize continuous production of fractionation, mixing, fed-batch reactions, total reflux reactions, and reflux condensation reactions. Attached Figure Description

[0017] Figure 1 This is a system diagram of the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram of a partial structure;

[0019] Figure 3 yes Figure 1 A partial structural diagram.

[0020] In the diagram: 1. Upper reflux liquid pipeline; 2. Lower reflux liquid pipeline; 3. Positive and negative pressure liquid seal tanks; 4. Cooler; 5. Oil phase production pipeline; 6. Aqueous phase discharge pipeline; 7. Packing layer; 8. Perforated plate; 9. Tail gas discharge pipeline; 10. Jacketed heat exchanger; 11. Steam outlet pipe; 12. Condenser; 13. Water separator; 14. Pipeline mixer; 21. Full production pipeline; 22. Continuous production pipeline. Detailed Implementation

[0021] Example:

[0022] like Figures 1 to 3 As shown, a combinable tower-type continuous reaction system includes a feeding system, a reactor, and a discharging system;

[0023] The feeding system includes a process water pipeline, a reactant pipeline, a fed material pipeline, and several circulating feeding units. The discharge system includes a crude product pipeline, a tail gas discharge pipeline, an aqueous phase discharge pipeline, and an oil phase recovery pipeline. The reactor includes a top cover and a bottom vessel. Six identical tower sections are connected between the top cover and the bottom vessel. The six tower sections are named Tower Section I, Tower Section II, Tower Section III, Tower Section IV, Tower Section V, and Tower Section VI, and are connected sequentially from top to bottom. Each tower section and the bottom vessel is provided with a feed inlet and a circulating liquid outlet. Each tower section is also provided with a drain outlet and an overflow outlet. The bottom vessel is also provided with a discharge outlet and a bottom outlet. A steam outlet pipe 11 is provided at the center of each tower section. The inlet of the steam outlet pipe 11 of the upper tower section is connected to the interior of the lower tower section, and the inlet of the steam outlet pipe 11 of the bottom tower section is connected to the interior of the bottom vessel. The outlet of the steam outlet pipe 11 extends out of the tower section. A steam outlet is provided at the top of the tower cover.

[0024] The number of circulating feed units is the same as the total number of tower sections and reboilers, with one circulating feed unit corresponding to each tower section and reboiler. Each circulating feed unit includes a condenser 12, a water distributor 13, and a pipeline mixer 14. The condenser 12 exchanges heat via circulating water. The reactant pipeline is connected to the inlet of the pipeline mixer 14 corresponding to tower section I. The feedstock pipeline is connected to the inlet of each pipeline mixer 14. One branch of the process water pipeline is connected to the top inlet of each water distributor 13, and the other branch is connected to the feedstock pipeline. The steam outlet at the top of the tower cover is connected to the inlet of the condenser 12 corresponding to tower section I. The water phase outlet of the condenser 12 is connected to the water phase discharge pipeline 6, and the oil phase outlet is connected to the top inlet of the water distributor 13. The tail gas outlet at the top of the water distributor 13 is connected to the tail gas outlet. Gas discharge pipeline 9; the upper reflux outlet of the water separator 13 is connected to the upper reflux pipeline 1; one branch of the upper reflux pipeline 1 is connected to the inlet of the pipeline mixer 14, and the other branch is connected to the oil phase production pipeline 5; a lower reflux pipeline 2 is connected between the bottom outlet of the water separator 13 and the top reflux inlet; the lower reflux pipeline 2 has three branches, one of which is connected to the inlet of the pipeline mixer 14, and the other two branches are connected to the aqueous phase discharge pipeline 6; the circulating liquid outlet of each tower section / reboiler is connected to the corresponding pipeline mixer 14 inlet; and the pipeline mixer 14 outlet is connected to the corresponding tower section / reboiler feed inlet.

[0025] The outlet of the steam outlet pipe 11 of the upper column section is connected to the inlet of the condenser 12 of the lower column section. The overflow port and the drain port of the upper column section are both connected to the inlet of the pipe mixer 14 of the lower column section. The outlet of the steam outlet pipe 11 of column section VI is connected to the inlet of the condenser 12 of the column bottom. The overflow port and the drain port of column section VI are both connected to the inlet of the pipe mixer 14 of the column bottom.

[0026] The exhaust gas discharge pipeline 9 is equipped with positive and negative pressure liquid seal tanks 3.

[0027] The outlet and bottom of the tower are both connected to the coarse product pipeline, and a cooler 4 is installed on the coarse product pipeline.

[0028] Both the tower section and the tower bottom are equipped with a packing layer 7 and a perforated plate 8. The perforated plate 8 is located below the packing layer 7, and the packing layer 7 and the perforated plate 8 are located between the feed inlet and the circulating liquid outlet.

[0029] The tower bottom, tower cover and tower section outer walls are all equipped with jacketed heat exchangers 10, the inlet of the jacketed heat exchanger 10 is connected to a steam pipeline and the outlet is connected to a condensate pipeline.

[0030] The feed inlet and drain outlet of the tower section are arranged opposite each other and located at the lower end of the tower section, while the circulating liquid outlet and overflow outlet of the tower section are located at the upper end of the tower section, with the overflow outlet being higher than the circulating liquid outlet.

[0031] The feed inlet of the column is located at the lower end of the column, the circulating liquid outlet and the discharge outlet of the column are located at the upper end of the column, and the discharge outlet is higher than the circulating liquid outlet. The bottom opening of the column is located at the bottom of the column.

[0032] The reactants enter the pipe mixer 14 corresponding to section I of the tower. The feed material enters the pipe mixer 14 corresponding to each section / reboiler of the tower. The circulating liquid from each section / reboiler enters the pipe mixer 14 corresponding to each section / reboiler of the tower. The overflow material and discharge liquid from the previous section enter the pipe mixer 14 corresponding to the next section / reboiler of the tower. After mixing in the pipe mixer 14, the materials enter the corresponding section / reboiler for reaction. The inlet of the water separator 13 and the feed material pipeline are connected to the process water, which can meet the water needs of the process system. It can also pre-add water phase to the water separator 13 before starting the reflux water separation reaction to achieve the purpose of stabilizing the continuous reaction system reflux water separation reaction.

[0033] Steam from the top of the tower cap enters the condenser 12 corresponding to tower section I. Steam from the steam outlet pipe 11 of the previous tower section enters the condenser 12 corresponding to the next tower section / bottom. After condensation in condenser 12, the aqueous phase enters the aqueous phase discharge pipeline, and the oil phase enters the water separator 13. After separation by water separator 13, part of the aqueous phase continues to flow back, another part enters the pipeline mixer 14, and yet another part is extracted and enters the aqueous phase discharge pipeline 6. Part of the oil phase is extracted and enters the oil phase extraction pipeline, and another part enters the pipeline mixer 14 for mixing before entering the corresponding tower section / bottom. The aqueous phase extraction is divided into two extraction pipeline branches: the full extraction pipeline 21 and the continuous extraction pipeline 22, which respectively achieve full extraction of the aqueous phase and continuous extraction of the aqueous phase while maintaining a stable oil-water interface height. The tail gas enters the tail gas discharge pipeline and is treated by positive and negative pressure liquid seal tanks to prevent backflow and reverse flow.

[0034] Steam from the bottom and upper sections of the tower enters the upper section of the tower through steam outlet pipe 11 for heat transfer, achieving energy saving. Crude product is collected from the bottom outlet and bottom outlet of the tower and enters the crude product pipeline.

[0035] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications may be made without departing from the technical solutions described in the claims.

[0036] In the description of this invention, it should be understood that the terms indicating 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 invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

Claims

1. A combinatorial tower-type continuous reaction system, characterized in that: Includes the feeding system, reactor, and discharge system; The feeding system includes a process water pipeline, a reactant pipeline, a fed material pipeline, and several circulating feed units. The discharge system includes a crude product pipeline, a tail gas discharge pipeline, an aqueous phase discharge pipeline, and an oil phase recovery pipeline. The reactor includes a top cover and a bottom vessel. Several identical tower sections are connected between the top cover and the bottom vessel, and these sections are connected sequentially from top to bottom. Each tower section and the bottom vessel is provided with a feed inlet and a circulating liquid outlet. Each tower section is also provided with a drain outlet and an overflow outlet. The bottom vessel is also provided with a discharge outlet and a bottom outlet. The discharge outlet and the bottom outlet are connected to the crude product pipeline. A steam outlet pipe is provided at the center of each tower section. The steam outlet pipe inlet of the upper tower section is connected to the interior of the lower tower section, and the steam outlet pipe inlet of the bottom tower section is connected to the interior of the bottom vessel. The steam outlet pipe outlet extends outside the tower section. A steam outlet is provided at the top of the top cover. The number of circulating feed units is the same as the total number of tower sections and reboilers. Each tower section and reboiler corresponds to one circulating feed unit. The aqueous phase outlet of the circulating feed unit is connected to the aqueous phase discharge pipeline, the oil phase outlet is connected to the oil phase discharge pipeline, the tail gas outlet is connected to the tail gas discharge pipeline, and the material outlet is connected to the feed inlet. The reactant pipeline and the steam outlet at the top of the tower cover are both connected to the circulating feed unit of the top tower section. The feed material pipeline and the process water pipeline are connected to each circulating feed unit. The circulating liquid outlet of each tower section is connected to the circulating feed unit corresponding to that tower section. The circulating liquid outlet of the reboiler is connected to the circulating feed unit corresponding to that reboiler. The steam outlet, overflow port, and liquid outlet of the upper tower section are all connected to the circulating feed unit of the lower tower section. The steam outlet, overflow port, and liquid outlet of the bottom tower section are connected to the circulating feed unit of the reboiler.

2. The combinatorial tower-type continuous reaction system according to claim 1, characterized in that: The circulating feed unit includes a condenser, a water separator, and a pipeline mixer. The reactant pipeline is connected to the inlet of the pipeline mixer corresponding to the top tower section. The feed material pipeline is connected to the inlet of each pipeline mixer. One branch of the process water pipeline is connected to the top inlet of the water separator, and the other branch is connected to the feed material pipeline. The steam outlet at the top of the tower cover is connected to the inlet of the condenser corresponding to the top tower section. The aqueous phase outlet of the condenser is connected to the aqueous phase discharge pipeline, and the oil phase outlet is connected to the top inlet of the water separator. The tail gas outlet at the top of the water separator is connected to the tail gas discharge pipeline. The reflux liquid outlet at the top of the water separator is connected to the upper reflux liquid pipeline. One branch of the upper reflux liquid pipeline is connected to the inlet of the pipeline mixer, and the other branch is connected to the oil phase extraction pipeline. A lower reflux liquid pipeline is connected between the bottom outlet of the water separator and the top reflux liquid inlet. The lower reflux liquid pipeline has three branches, one of which is connected to the inlet of the pipeline mixer, and the other two branches are connected to the aqueous phase discharge pipeline. The circulating liquid outlet is connected to the corresponding pipeline mixer inlet, and the pipeline mixer outlet is connected to the corresponding feed inlet. The steam outlet of the upper column section is connected to the condenser inlet of the corresponding lower column section. The overflow port and drain port of the upper column section are both connected to the pipeline mixer inlet of the corresponding lower column section. The steam outlet of the bottom column section is connected to the condenser inlet of the corresponding bottom column. The overflow port and drain port of the bottom column section are both connected to the pipeline mixer inlet of the corresponding bottom column.

3. The combinatorial tower-type continuous reaction system according to claim 2, characterized in that: The exhaust gas discharge pipeline is equipped with positive and negative pressure liquid seal tanks.

4. The combinatorial tower-type continuous reaction system according to claim 1, characterized in that: A cooler is installed on the crude product pipeline.

5. The combinatorial tower-type continuous reaction system according to claim 1, characterized in that: Both the tower section and the tower bottom are equipped with a packing layer and a perforated plate, with the perforated plate located below the packing layer.

6. The combinatorial tower-type continuous reaction system according to claim 5, characterized in that: The packing layer and the perforated plate are located between the feed inlet and the circulating liquid outlet.

7. The combinatorial tower-type continuous reaction system according to claim 1, characterized in that: The tower bottom, tower cover, and outer wall of the tower section are all equipped with jacketed heat exchangers. The inlet of the jacketed heat exchanger is connected to a steam pipeline, and the outlet is connected to a condensate pipeline.

8. The combinatorial tower continuous reaction system according to claim 1, characterized in that: The feed inlet and drain outlet of the tower section are arranged opposite each other and located at the lower end of the tower section, while the circulating liquid outlet and overflow outlet of the tower section are located at the upper end of the tower section, with the overflow outlet being higher than the circulating liquid outlet.

9. The combinatorial tower-type continuous reaction system according to claim 1, characterized in that: The feed inlet of the column is located at the lower end of the column, the circulating liquid outlet and the discharge outlet of the column are located at the upper end of the column, and the discharge outlet is higher than the circulating liquid outlet. The bottom opening of the column is located at the bottom of the column.

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