Drying qualified purification gas pre-refining system

Abstract

The utility model relates to the technical field of purification gas pre rectification, propose a kind of drying qualified purification gas pre rectification system, the design is provided with adsorption switching assembly in pre rectification tower body and vice warehouse, adsorption switching assembly includes the inner ring seat rotationally connected in the middle part of pre rectification tower body inside, upper closure plate is fixedly connected with in pre rectification tower body inside and located above inner ring seat, inner ring seat inside is fixedly connected with middle plate in the middle, adsorbent for adsorbing alcohol impurities is independently provided with in inner ring seat inside and located middle plate both sides, heating regeneration component that can heat and discharge adsorbent alcohol impurities is arranged at inner ring seat at pre rectification tower body outside, spraying component that can prewash purification gas is arranged at pre rectification tower body inside and located adsorption switching assembly below;Through adsorption-regeneration integrated continuous operation design and spraying-adsorption collaborative purification structure solve the problem of adsorbent regeneration efficiency low and purification effect unstable in prior art.

Description

Technical Field

[0001] This utility model relates to the field of purified gas pre-distillation technology, specifically to a pre-distillation system for properly dried purified gas. Background Technology

[0002] In the field of industrial waste gas treatment, especially in carbon dioxide recovery processes, alcohol impurities (such as methanol) and moisture in the purified gas can significantly affect the purity of the final product. Traditional processes use adsorbents to remove alcohols from the purified gas, but they have the following drawbacks: low adsorbent regeneration efficiency: existing adsorbers require shutdown for switching and separate high-temperature regeneration, leading to production interruptions and affecting continuity; unstable purification effect: delayed switching after a single adsorption unit becomes saturated can cause alcohol impurities to overflow; high energy consumption: the regeneration process relies on continuous heating from an external heat source. Utility Model Content

[0003] This invention proposes a pre-distillation system for properly dried purified gas, which solves the problems of low adsorbent regeneration efficiency and unstable purification effect in the prior art.

[0004] The technical solution of this utility model is as follows: A pre-distillation system for dried and qualified purified gas includes a pre-distillation tower body, a secondary compartment fixedly connected to the side of the pre-distillation tower body, and the interior of the pre-distillation tower body and the secondary compartment being connected. An adsorption switching assembly is provided in the pre-distillation tower body and the secondary compartment. The adsorption switching assembly includes an inner ring seat rotatably connected to the middle of the inner side of the pre-distillation tower body. An upper sealing plate is fixedly connected above the inner ring seat inside the pre-distillation tower body. A central plate is fixedly connected to the inner side of the inner ring seat. Adsorbents for adsorbing alcohol impurities are independently arranged on both sides of the central plate inside the inner ring seat. A heating regeneration assembly capable of heating and discharging the adsorbent adsorbing alcohol impurities is provided on the outer side of the pre-distillation tower body at the inner ring seat. A spray assembly capable of pre-washing the purified gas is provided inside the pre-distillation tower body below the adsorption switching assembly.

[0005] Preferably, the spray assembly includes a storage tank, which is fixedly connected to the lower part of the outer side of the pre-distillation column.

[0006] Preferably, the spray assembly further includes a spray plate, which is fixedly connected to the inside of the pre-distillation column below the inner ring seat, and the top of the spray plate is in contact with the inner ring seat.

[0007] Preferably, the spray assembly further includes an inlet pipe and a valve body. The valve body is fixedly installed on the outside of the inlet pipe. One end of the inlet pipe is fixedly connected to the storage tank, and the other end of the inlet pipe is fixedly connected to the spray plate. The inlet pipe, the storage tank, and the spray plate are connected in a continuous manner.

[0008] Preferably, the adsorption switching component includes a forward and reverse motor, which is fixedly installed inside the auxiliary compartment. The adsorption switching component also includes a first rotating shaft, which is rotatably connected to the inside of the auxiliary compartment, and the first rotating shaft is fixedly connected to the output end of the forward and reverse motor.

[0009] Preferably, the adsorption switching assembly further includes a worm gear, which is fixedly connected to the outside of the first rotating shaft.

[0010] Preferably, the adsorption switching assembly further includes a second rotating shaft, which is rotatably connected to the inner side of the auxiliary compartment. The adsorption switching assembly also includes a worm gear, which is fixedly connected to the upper part of the second rotating shaft. The worm gear is in contact with the worm and is meshed and rotatably connected.

[0011] Preferably, the adsorption switching assembly further includes a toothed disc, which is fixedly connected to the lower part of the outer side of the first rotating shaft. The adsorption switching assembly also includes a tooth groove group, which is distributed in a ring on the outer side of the inner ring seat. The tooth groove group is in contact with the toothed disc and is meshed and rotatably connected.

[0012] Preferably, the adsorption switching component further includes two sets of inlet grooves, which are opened through the side of the inner ring seat, and each inlet groove corresponds to the position of each adsorbent.

[0013] Preferably, the heating and regeneration assembly includes an inlet chamber, which is fixedly connected to the outside of the pre-distillation column and communicates with the pre-distillation column. The height of the inlet chamber corresponds to that of the inlet trough. The heating and regeneration assembly also includes a heating plate, which is fixedly installed inside the inlet chamber. A door cover is fastened to the front of the inlet chamber, and an outlet pipe is fixedly connected to the middle of the door cover. The outlet pipe communicates with the inlet chamber, and a pump body is fixedly installed on the outside of the outlet pipe.

[0014] The beneficial effects of this utility model are as follows:

[0015] I. Integrated Adsorption-Regeneration Continuous Operation Design: Through the independent dual-adsorbent layout of the inner ring seat and the linkage of the rotary drive components (positive and negative motors, worm gears / gear discs), the two sets of adsorbents in the distillation column achieve automatic switching. Saturated adsorbents can be transferred to the heating and regeneration component without shutdown, directly heated and regenerated via an embedded heating plate in the inlet chamber. Simultaneously, the other set of adsorbents continues to operate, ensuring continuous system operation. Technical Advantages: Completely solves the defect of traditional adsorbers requiring shutdown for switching, avoiding interruption of purified gas treatment, and reducing energy loss through closed-loop heating and regeneration. II. Spray-Adsorption Synergistic Purification Structure: A spray component is installed below the adsorption switching component, using liquefied carbon dioxide to pre-wash the purified gas. The spray plate evenly removes reboiling impurities such as methanol, reducing the subsequent adsorbent load. The spray plate and inner ring seat form a sealed contact, guiding the airflow and ensuring that the washed purified gas concentrates through the active adsorbent area, avoiding gas bypass. Technical Advantages: The synergistic effect of spray pre-washing and adsorption-de-alcoholization significantly improves impurity removal efficiency, extends the adsorbent regeneration cycle, and simplifies the process flow through the integrated design of the column space. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the external structure of the pre-distillation tower of this utility model;

[0018] Figure 2 This is a schematic diagram of the interior of the pre-distillation tower and the spray assembly of this utility model;

[0019] Figure 3 This is a schematic diagram of the adsorption switching component of this utility model;

[0020] Figure 4 This is a schematic diagram of the heating and regeneration component of this utility model;

[0021] In the diagram: 1. Pre-distillation column body; 11. Secondary compartment; 12. Upper sealing plate; 2. Spray assembly; 21. Storage tank; 22. Inlet pipe; 221. Valve body; 23. Spray plate; 3. Adsorption switching assembly; 31. Forward and reverse motor; 32. First rotating shaft; 321. Worm gear; 33. Second rotating shaft; 331. Worm wheel; 332. Gear disc; 34. Inner ring seat; 341. Inlet groove; 342. Gear groove group; 35. Central plate; 36. Adsorbent; 4. Heating and regeneration assembly; 41. Inlet compartment; 411. Heating plate; 42. Door cover; 43. Outlet pipe; 431. Pump body. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figure 1 and Figure 2 and Figure 3 and Figure 4 This utility model provides a technical solution: a pre-distillation system for dried and qualified purified gas, including a pre-distillation tower body 1, a secondary chamber 11 fixedly connected to the side of the pre-distillation tower body 1, the interior of the pre-distillation tower body 1 and the secondary chamber 11 are connected, an adsorption switching assembly 3 is provided in the pre-distillation tower body 1 and the secondary chamber 11, the adsorption switching assembly 3 includes an inner ring seat 34 rotatably connected to the middle of the inner side of the pre-distillation tower body 1, an upper sealing plate 12 fixedly connected above the inner ring seat 34 inside the pre-distillation tower body 1, a central plate 35 fixedly connected in the center of the inner side of the inner ring seat 34, an adsorbent 36 for adsorbing alcohol impurities is independently provided on both sides of the central plate 35 inside the inner ring seat 34, a heating regeneration assembly 4 for heating and discharging the adsorbent 36 adsorbing alcohol impurities is provided on the outer side of the pre-distillation tower body 1 at the inner ring seat 34, and a spray assembly 2 for pre-washing the purified gas is provided inside the pre-distillation tower body 1 below the adsorption switching assembly 3;

[0024] This design solves the problems of low adsorbent regeneration efficiency and unstable purification effect in the existing technology through the integrated continuous operation design of adsorption-regeneration and the spray-adsorption synergistic purification structure.

[0025] Please see Figure 2 The spray assembly 2 includes a storage tank 21, which is fixedly connected to the lower part of the outer side of the pre-distillation column body 1;

[0026] The spray assembly 2 also includes a spray plate 23, which is fixedly connected to the inside of the pre-distillation column 1 and located below the inner ring seat 34. The top of the spray plate 23 is in contact with the inner ring seat 34.

[0027] The spray assembly 2 also includes an inlet pipe 22 and a valve body 221. The valve body 221 is fixedly installed on the outside of the inlet pipe 22. One end of the inlet pipe 22 is fixedly connected to the storage tank 21, and the other end of the inlet pipe 22 is fixedly connected to the spray plate 23. The inlet pipe 22, the storage tank 21, and the spray plate 23 are connected together.

[0028] When the purified gas enters from the bottom of the pre-distillation column 1, the valve body 221 can be activated first, so that the liquefied carbon dioxide in the storage tank 21 passes through the storage tank 21 and the inlet pipe 22 in sequence, and is sprayed out from the spray plate 23 to contact the purified gas.

[0029] This design allows liquefied carbon dioxide to wash the purified gas and remove reboiling impurities such as methanol.

[0030] Please see Figure 2 and Figure 3 The adsorption switching component 3 includes a forward and reverse motor 31, which is fixedly installed inside the auxiliary compartment 11. The adsorption switching component 3 also includes a first rotating shaft 32, which is rotatably connected to the inside of the auxiliary compartment 11, and the first rotating shaft 32 is fixedly connected to the output end of the forward and reverse motor 31.

[0031] The adsorption switching assembly 3 also includes a worm gear 321, which is fixedly connected to the outside of the first rotating shaft 32;

[0032] The adsorption switching assembly 3 also includes a second rotating shaft 33, which is rotatably connected to the inner side of the auxiliary chamber 11. The adsorption switching assembly 3 also includes a worm gear 331, which is fixedly connected to the upper part of the second rotating shaft 33. The worm gear 331 is in contact with the worm 321 and is meshed and rotatably connected.

[0033] The adsorption switching assembly 3 also includes a toothed disk 332, which is fixedly connected to the lower part of the outer side of the first rotating shaft 32. The adsorption switching assembly 3 also includes a toothed groove group 342, which is distributed in a ring on the outer side of the inner ring seat 34. The toothed groove group 342 is in contact with the toothed disk 332 and is meshed and rotatably connected.

[0034] The adsorption switching component 3 also includes two sets of inlet grooves 341, which are opened through the inner ring seat 34 on the side, and each inlet groove 341 corresponds to the position of each adsorbent 36.

[0035] This design includes two sets of adsorbents 36 of the same specification within the inner ring seat 34. Initially, one set of adsorbents 36 is located between the upper sealing plate 12 and the spray plate 23, and is closed within the pre-distillation column 1. This set of adsorbents 36 is in a ready-to-use state. The other set of adsorbents 36 is located opposite to the first set and is connected to the pre-distillation column 1. When the purified gas, after pre-washing by the spray plate 23, rises to the inner ring seat 34, it is adsorbed through the connected adsorbents 36. Specifically, when the connected adsorbents 36 have reached saturation adsorption, the forward and reverse motors 31 can be activated to drive the second set of adsorbents. A rotating shaft 32 and a worm gear 321 rotate, and under the meshing action of the worm gear 321 and the worm wheel 331, the second rotating shaft 33 located in the middle of the worm wheel 331 can rotate synchronously. At the same time, under the meshing action of the toothed disc 332 and the toothed groove group 342, the inner ring seat 34 located inside the pre-distillation column body 1 begins to rotate. When the inner ring seat 34 rotates 180 degrees, the two sets of adsorbents 36 exchange positions. At this time, the previously closed adsorbent 36 replaces the adsorbent 36 that is saturated with adsorption and continues to perform adsorption work, while the adsorbent 36 that is saturated with adsorption rotates to the space between the upper sealing plate 12 and the spray plate 23 to complete the closure.

[0036] Please see Figure 3 and Figure 4 The heating and regeneration assembly 4 includes an inlet chamber 41, which is fixedly connected to the outside of the pre-distillation column 1. The inlet chamber 41 is connected to the pre-distillation column 1 and the height of the inlet chamber 41 corresponds to that of the inlet groove 341. The heating and regeneration assembly 4 also includes a heating plate 411, which is fixedly installed inside the inlet chamber 41. A door cover 42 is fastened to the front of the inlet chamber 41. An outlet pipe 43 is fixedly connected to the middle of the door cover 42. The outlet pipe 43 is connected to the inlet chamber 41. A pump body 431 is fixedly installed on the outside of the outlet pipe 43.

[0037] When the adsorbent 36, which is saturated with adsorption, rotates between the upper sealing plate 12 and the spray plate 23, the inlet groove 341 on the side of the adsorbent 36 will correspond to the position of the inlet chamber 41 and the two will be connected to each other. At this time, the heating plate 411 can be activated to heat the adsorbent 36, so that the adsorbent 36 adsorbs impurities and passes through the inlet chamber 41 and the outlet pipe 43 in sequence and is discharged outward.

[0038] Working principle:

[0039] When the purified gas enters from the bottom of the pre-distillation column 1, the valve body 221 can be activated first, so that the liquefied carbon dioxide in the storage tank 21 passes through the storage tank 21 and the inlet pipe 22 in sequence, and is sprayed out from the spray plate 23 to contact the purified gas.

[0040] This design includes two sets of adsorbents 36 of the same specification within the inner ring seat 34. Initially, one set of adsorbents 36 is located between the upper sealing plate 12 and the spray plate 23, and is closed within the pre-distillation column 1. This set of adsorbents 36 is in a ready-to-use state. The other set of adsorbents 36 is located opposite to the first set and is connected to the pre-distillation column 1. When the purified gas, after pre-washing by the spray plate 23, rises to the inner ring seat 34, it is adsorbed through the connected adsorbents 36. Specifically, when the connected adsorbents 36 have reached saturation adsorption, the forward and reverse motors 31 can be activated to drive the second set of adsorbents. A rotating shaft 32 and a worm gear 321 rotate, and under the meshing action of the worm gear 321 and the worm wheel 331, the second rotating shaft 33 located in the middle of the worm wheel 331 can rotate synchronously. At the same time, under the meshing action of the toothed disc 332 and the toothed groove group 342, the inner ring seat 34 located inside the pre-distillation column body 1 begins to rotate. When the inner ring seat 34 rotates 180 degrees, the two sets of adsorbents 36 exchange positions. At this time, the originally closed adsorbent 36 replaces the adsorbent 36 that is saturated with adsorption and continues to perform adsorption work, while the adsorbent 36 that is saturated with adsorption rotates to the space between the upper sealing plate 12 and the spray plate 23 to complete the closure.

[0041] When the adsorbent 36, which is saturated with adsorption, rotates between the upper sealing plate 12 and the spray plate 23, the inlet groove 341 on the side of the adsorbent 36 will correspond to the position of the inlet chamber 41 and the two will be connected to each other. At this time, the heating plate 411 can be activated to heat the adsorbent 36, so that the adsorbent 36 adsorbs impurities and passes through the inlet chamber 41 and the outlet pipe 43 in sequence and is discharged outward.

[0042] Similarly, this process is repeated to achieve the goal of "one on, one on standby" for adsorbent 36.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pre-distillation system for dried and qualified purified gas, comprising a pre-distillation column (1), characterized in that, A secondary compartment (11) is fixedly connected to the side of the pre-distillation column (1). The interior of the pre-distillation column (1) and the secondary compartment (11) are connected. An adsorption switching assembly (3) is provided inside the pre-distillation column (1) and the secondary compartment (11). The adsorption switching assembly (3) includes an inner ring seat (34) rotatably connected to the middle of the inner side of the pre-distillation column (1). An upper sealing plate (12) is fixedly connected above the inner ring seat (34) inside the pre-distillation column (1). A central plate (35) is fixedly connected to the inner side of the pre-distillation tower (1). Adsorbents (36) for adsorbing alcohol impurities are independently arranged on both sides of the central plate (35) inside the inner ring seat (34). A heating regeneration component (4) is arranged on the outer side of the pre-distillation tower (1) at the inner ring seat (34) to heat and discharge the alcohol impurities adsorbed by the adsorbent (36). A spray component (2) for pre-washing the purified gas is arranged inside the pre-distillation tower (1) below the adsorption switching component (3).

2. The pre-distillation system for a properly dried and purified gas according to claim 1, characterized in that, The spray assembly (2) includes a storage tank (21), which is fixedly connected to the lower part of the outside of the pre-distillation column (1).

3. The pre-distillation system for a properly dried and purified gas according to claim 1, characterized in that, The spray assembly (2) also includes a spray plate (23), which is fixedly connected to the inside of the pre-distillation column (1) and located below the inner ring seat (34). The top of the spray plate (23) is in contact with the inner ring seat (34).

4. The pre-distillation system for a properly dried and purified gas according to claim 2, characterized in that, The spray assembly (2) also includes an inlet pipe (22) and a valve body (221). The valve body (221) is fixedly installed on the outside of the inlet pipe (22). One end of the inlet pipe (22) is fixedly connected to the storage tank (21), and the other end of the inlet pipe (22) is fixedly connected to the spray plate (23). The inlet pipe (22), the storage tank (21), and the spray plate (23) are connected together.

5. The pre-distillation system for a properly dried and purified gas according to claim 1, characterized in that, The adsorption switching component (3) includes a forward and reverse motor (31), which is fixedly installed inside the auxiliary compartment (11). The adsorption switching component (3) also includes a first rotating shaft (32), which is rotatably connected to the inside of the auxiliary compartment (11), and the first rotating shaft (32) is fixedly connected to the output end of the forward and reverse motor (31).

6. The pre-distillation system for a properly dried and purified gas according to claim 5, characterized in that, The adsorption switching assembly (3) also includes a worm gear (321), which is fixedly connected to the outside of the first rotating shaft (32).

7. The pre-distillation system for a properly dried and purified gas according to claim 6, characterized in that, The adsorption switching assembly (3) also includes a second rotating shaft (33), which is rotatably connected to the inner side of the auxiliary chamber (11). The adsorption switching assembly (3) also includes a worm gear (331), which is fixedly connected to the upper part of the second rotating shaft (33). The worm gear (331) is in contact with the worm (321) and is meshed and rotatably connected.

8. The pre-distillation system for a properly dried and purified gas according to claim 7, characterized in that, The adsorption switching component (3) also includes a toothed disc (332), which is fixedly connected to the lower part of the outer side of the first rotating shaft (32). The adsorption switching component (3) also includes a toothed groove group (342), which is distributed in a ring on the outer side of the inner ring seat (34). The toothed groove group (342) is in contact with the toothed disc (332) and is meshed and rotated.

9. The pre-distillation system for a properly dried and purified gas according to claim 1, characterized in that, The adsorption switching component (3) also includes two sets of inlet grooves (341), which are opened through the inner ring seat (34) on the side, and each inlet groove (341) corresponds to the position of each adsorbent (36).

10. A pre-distillation system for a properly dried and purified gas according to claim 9, characterized in that, The heating and regeneration assembly (4) includes an inlet chamber (41), which is fixedly connected to the outside of the pre-distillation column (1). The inlet chamber (41) is connected to the pre-distillation column (1), and the height of the inlet chamber (41) corresponds to that of the inlet trough (341). The heating and regeneration assembly (4) also includes a heating plate (411), which is fixedly installed inside the inlet chamber (41). A door cover (42) is fastened to the front of the inlet chamber (41). An outlet pipe (43) is fixedly connected to the middle of the door cover (42). The outlet pipe (43) is connected to the inlet chamber (41), and a pump body (431) is fixedly installed on the outside of the outlet pipe (43).

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