Multifunctional adsorption-distillation coupling purification device

Abstract

The utility model discloses a multifunctional adsorption - rectification coupling purification device belongs to chemical industry separation technical field. Adsorption unit completes the preliminary separation of azeotrope, realizes the switching between material's up -in and down -out and down -in and up -out through the combination use between valve, utilizes system pressure controller (7) to realize the pressure swing adsorption to tubular reactor (4), changes the azeotrope after composition and enters rectifying column (8), is further separated to the new formation gas - liquid equilibrium component through rectification unit, realizes the separation and purification of azeotrope finally. The device combines the selectivity of adsorption and the high efficiency of rectification simultaneously, has the advantages such as simple process, wide use, big operation flexibility, energy -conserving and consumption -reducing.

Description

Technical Field

[0001] This utility model relates to a multifunctional adsorption-distillation coupled purification device, belonging to the field of chemical separation technology. Background Technology

[0002] An azeotrope is a mixture of two or more homogeneous solutions of different components that, when mixed in a specific ratio, have only one boiling point under a fixed pressure. When an azeotrope reaches its azeotropic point, the gaseous and liquid components produced by boiling are in exactly the same proportion, making separation impossible by simple distillation or fractional distillation. Specialized distillation methods are typically used to separate azeotropes, such as azeotropic distillation, extractive distillation, and adsorption distillation.

[0003] Adsorption-distillation coupling technology is a novel separation process that organically combines adsorption separation and distillation separation. This technology overcomes the limitations of single separation methods through synergistic effects, combining the advantages of a high separation factor in adsorption and a continuous distillation process. With the development of new materials and intelligent control technologies, this technology is expected to achieve industrial applications in more fields, providing more efficient and environmentally friendly solutions for chemical separation. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a multifunctional adsorption-distillation coupled purification device with a simple process, wide application, free switching operation between top inlet and bottom outlet / bottom inlet and top outlet during material adsorption and separation, atmospheric pressure / pressure swing adsorption-distillation coupling operation, and energy saving and consumption reduction.

[0005] The multifunctional adsorption distillation coupled purification device of this utility model includes a feed switching three-way valve (1), a reactor upper inlet switching three-way valve (2), a reactor lower inlet switching three-way valve (3), a tubular reactor (4), a discharge switching three-way valve (5), a pressure gauge (6), a system pressure controller (7), a distillation column (8), a column top condenser (9), a column top discharge valve (10), a column top reflux valve (11), a column bottom discharge valve (12), an inlet valve (13), a flow controller (14), a shut-off valve A (15), a rotor flowmeter A (16), a shut-off valve B (17), a shut-off valve C (18), a rotor flowmeter B (19), a shut-off valve D (20), and heating and insulation. The system (21) is characterized in that: one end of the feed switching three-way valve (1) is connected to one end of the upper switching three-way valve (2) of the reactor via a pipeline; the two ends of the feed switching three-way valve (1) are connected to one end of the lower switching three-way valve (3) of the reactor via a pipeline; the three ends of the feed switching three-way valve (1) are connected to the material via a pipeline; the three ends of the upper switching three-way valve (2) of the reactor are connected to the upper end of the tubular reactor (4) via a pipeline; the two ends of the upper switching three-way valve (2) of the reactor are connected to one end of the discharge switching three-way valve (5) via a pipeline; and the three ends of the lower switching three-way valve (3) of the reactor are connected to the lower end of the tubular reactor (4) via a pipeline. Two ends of the switching three-way valve (3) at the lower end of the reactor are connected to two ends of the discharge switching three-way valve (5) via pipelines. Three ends of the discharge switching three-way valve (5) are connected to the pressure gauge (6) and the inlet of the system pressure controller (7) via pipelines. The outlet of the system pressure controller (7) is connected to the distillation column (8) via pipelines. The top of the distillation column (8) is connected to the inlet of the top condenser (9) via pipelines. After the material is condensed by the top condenser (9), it is divided into three streams. The first stream flows back to the distillation column (8) to maintain the basic operation of the column. The second stream is used to collect low-boiling-point products through the top discharge valve (10). The third stream is connected to the top reflux valve (11) via pipelines. The three ends of the feed switching three-way valve (1) are connected, and the high boiling point product is taken out from the bottom of the distillation column (8) through the bottom discharge valve (12). The gas inlet valve (13), flow controller (14), gas inlet reactor valve (22), and upper end of tubular reactor (4) are connected in sequence through pipelines. The upper end of tubular reactor (4), shut-off valve A (15), rotor flow meter A (16), shut-off valve B (17), and lower end of tubular reactor (4) are connected in sequence through pipelines. The lower end of tubular reactor (4), shut-off valve C (18), rotor flow meter B (19), shut-off valve D (20), and upper end of tubular reactor (4) are connected in sequence through pipelines.

[0006] The flow direction of the material from the tubular reactor (4) after adsorption separation is as follows: end 3 of feed switching three-way valve (1) → end 1 of feed switching three-way valve (1) → end 1 of reactor upper switching three-way valve (2) → end 3 of reactor upper switching three-way valve (2) → upper end of tubular reactor (4) → lower end of tubular reactor (4) → end 3 of reactor lower switching three-way valve (3) → end 2 of reactor lower switching three-way valve (3) → end 2 of discharge switching three-way valve (5) → end 3 of discharge switching three-way valve (5) → system pressure controller (7) → distillation column (8). The flow of material diversion is as follows: end 3 of reactor upper switching three-way valve (2) → shut-off valve A (15) → rotor flow meter A (16) → shut-off valve B (17) → end 3 of reactor lower switching three-way valve (3).

[0007] The flow direction of the material from the bottom in the tubular reactor (4) to the top after adsorption separation is as follows: end 3 of the feed switching three-way valve (1) → end 2 of the feed switching three-way valve (1) → end 1 of the reactor bottom switching three-way valve (3) → end 3 of the reactor bottom switching three-way valve (3) → bottom of the tubular reactor (4) → top of the tubular reactor (4) → end 3 of the reactor top switching three-way valve (2) → end 2 of the reactor top switching three-way valve (2) → end 1 of the discharge switching three-way valve (5) → end 3 of the discharge switching three-way valve (5) → system pressure controller (7) → distillation column (8). The flow path of the material diversion is as follows: end 3 of the reactor bottom switching three-way valve (3) → shut-off valve C (18) → rotor flow meter B (19) → shut-off valve D (20) → end 3 of the reactor top switching three-way valve (2).

[0008] The outer wall of the tubular reactor (4) is attached with a heating and insulation system (21), and the temperature of the heating and insulation system (21) is controlled at 20℃~400℃.

[0009] The beneficial effects of this utility model are:

[0010] 1. This device combines the selectivity of adsorption with the high efficiency of distillation. By using the selective adsorption of specific components by the adsorbent, the initial separation of azeotropes can be achieved. Then, by changing the composition of the azeotropes, the phase equilibrium of the system can be changed, which facilitates the further separation of gas-liquid equilibrium components by distillation.

[0011] 2. During adsorption separation, the material can be switched between top inlet and bottom outlet and bottom inlet and top outlet by using a combination of valves. At the same time, the outlet of the tubular reactor (4) is equipped with a system pressure controller (7), which can realize pressure swing adsorption separation of the tubular reactor (4). It is convenient to use and has great operational flexibility.

[0012] 3. The mixture collected from the top of the distillation column (8) can be returned to the feed switching three-way valve (1) through the top reflux valve (11) and then subjected to secondary adsorption separation through the tubular reactor (4). At the same time, the tubular reactor (4) is equipped with a bypass diversion valve to facilitate the development of the adsorption process.

[0013] 4. The coupled operation of adsorption and distillation can overcome the azeotropic limitation, while reducing energy consumption and saving equipment space and construction investment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a multifunctional adsorption-distillation coupled purification device. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings:

[0016] like Figure 1The multifunctional adsorption-distillation coupled purification device shown consists of a feed switching three-way valve (1), a reactor upper inlet switching three-way valve (2), a reactor lower inlet switching three-way valve (3), a tubular reactor (4), a discharge switching three-way valve (5), a pressure gauge (6), a system pressure controller (7), a distillation column (8), a column top condenser (9), a column top discharge valve (10), a column top reflux valve (11), a column bottom discharge valve (12), an inlet valve (13), a flow controller (14), a shut-off valve A (15), a rotor flow meter A (16), a shut-off valve B (17), a shut-off valve C (18), a rotor flow meter B (19), a shut-off valve D (20), and a heating and insulation system (21). One end of the feed switching three-way valve (1) is connected to one end of the upper switching three-way valve (2) of the reactor via a pipeline. The other end of the feed switching three-way valve (1) is connected to one end of the lower switching three-way valve (3) of the reactor via a pipeline. The third end of the feed switching three-way valve (1) is connected to the material via a pipeline. The third end of the upper switching three-way valve (2) of the reactor is connected to the upper end of the tubular reactor (4) via a pipeline. The second end of the upper switching three-way valve (2) of the reactor is connected to one end of the discharge switching three-way valve (5) via a pipeline. The third end of the lower switching three-way valve (3) of the reactor is connected to the lower end of the tubular reactor (4) via a pipeline. The second end of the lower switching three-way valve (3) of the reactor is connected to the discharge switching three-way valve (5) via a pipeline. Two ends of the through valve (5) are connected, and the three ends of the discharge switching three-way valve (5) are connected to the pressure gauge (6) and the inlet of the system pressure controller (7) through pipelines. The outlet of the system pressure controller (7) is connected to the distillation column (8) through pipelines. The top of the distillation column (8) is connected to the inlet of the top condenser (9) through pipelines. After the material is condensed by the top condenser (9), it is divided into three streams. The first stream flows back to the distillation column (8) to maintain the basic operation of the column. The second stream is used to collect low-boiling point products through the top discharge valve (10). The third stream is connected to the top reflux valve (11) and the three ends of the feed switching three-way valve (1) through pipelines. It is discharged from the bottom of the distillation column (8) through the bottom discharge valve (12). High-boiling-point products are extracted. The upper end of the inlet valve (13), flow controller (14), gas inlet reactor valve (22), and tubular reactor (4) are connected in sequence by pipelines. The upper end of the tubular reactor (4), shut-off valve A (15), rotor flow meter A (16), shut-off valve B (17), and lower end of the tubular reactor (4) are connected in sequence by pipelines. The lower end of the tubular reactor (4), shut-off valve C (18), rotor flow meter B (19), shut-off valve D (20), and upper end of the tubular reactor (4) are connected in sequence by pipelines. The outer wall of the tubular reactor (4) is attached with a heating and insulation system (21). The control temperature of the heating and insulation system (21) is 20℃~400℃.

[0017] The flow direction of the material from the tubular reactor (4) after adsorption separation is as follows: end 3 of feed switching three-way valve (1) → end 1 of feed switching three-way valve (1) → end 1 of reactor upper switching three-way valve (2) → end 3 of reactor upper switching three-way valve (2) → upper end of tubular reactor (4) → lower end of tubular reactor (4) → end 3 of reactor lower switching three-way valve (3) → end 2 of reactor lower switching three-way valve (3) → end 2 of discharge switching three-way valve (5) → end 3 of discharge switching three-way valve (5) → system pressure controller (7) → distillation column (8). The flow of material diversion is as follows: end 3 of reactor upper switching three-way valve (2) → shut-off valve A (15) → rotor flow meter A (16) → shut-off valve B (17) → end 3 of reactor lower switching three-way valve (3).

[0018] The flow direction of the material from the bottom in the tubular reactor (4) to the top after adsorption separation is as follows: end 3 of the feed switching three-way valve (1) → end 2 of the feed switching three-way valve (1) → end 1 of the reactor bottom switching three-way valve (3) → end 3 of the reactor bottom switching three-way valve (3) → bottom of the tubular reactor (4) → top of the tubular reactor (4) → end 3 of the reactor top switching three-way valve (2) → end 2 of the reactor top switching three-way valve (2) → end 1 of the discharge switching three-way valve (5) → end 3 of the discharge switching three-way valve (5) → system pressure controller (7) → distillation column (8). The flow path of the material diversion is as follows: end 3 of the reactor bottom switching three-way valve (3) → shut-off valve C (18) → rotor flow meter B (19) → shut-off valve D (20) → end 3 of the reactor top switching three-way valve (2).

[0019] The description and application of this utility model herein are illustrative and are not intended to limit the scope of this utility model to the above embodiments. Therefore, this utility model is not limited to the embodiments described herein, and any technical solution obtained by equivalent substitution is within the protection scope of this utility model.

Claims

1. A multifunctional adsorption-distillation coupled purification device, comprising a feed switching three-way valve (1), a reactor upper inlet switching three-way valve (2), a reactor lower inlet switching three-way valve (3), a tubular reactor (4), a discharge switching three-way valve (5), a pressure gauge (6), a system pressure controller (7), a distillation column (8), a column top condenser (9), a column top discharge valve (10), a column top reflux valve (11), a column bottom discharge valve (12), an inlet valve (13), a flow controller (14), a shut-off valve A (15), a rotor flowmeter A (16), a shut-off valve B (17), a shut-off valve C (18), a rotor flowmeter B (19), a shut-off valve D (20), and a heating and insulation system (21), characterized in that: One end of the feed switching three-way valve (1) is connected to one end of the upper switching three-way valve (2) of the reactor via a pipeline. The other end of the feed switching three-way valve (1) is connected to one end of the lower switching three-way valve (3) of the reactor via a pipeline. The third end of the feed switching three-way valve (1) is connected to the material via a pipeline. The third end of the upper switching three-way valve (2) of the reactor is connected to the upper end of the tubular reactor (4) via a pipeline. The second end of the upper switching three-way valve (2) of the reactor is connected to the discharge switching three-way valve via a pipeline. (5) is connected to one end, and the three ends of the reactor lower outlet switching three-way valve (3) are connected to the lower end of the tubular reactor (4) through a pipeline. The two ends of the reactor lower outlet switching three-way valve (3) are connected to the two ends of the discharge switching three-way valve (5) through a pipeline. The three ends of the discharge switching three-way valve (5) are connected to the inlet of the pressure gauge (6) and the system pressure controller (7) through a pipeline. The outlet of the system pressure controller (7) is connected to the distillation column (8) through a pipeline. The distillation column ( The top of column 8) is connected to the inlet of the top condenser (9) via a pipeline. After the material is condensed by the top condenser (9), it is divided into three streams. The first stream flows back to the distillation column (8) to maintain the basic operation of the column. The second stream is discharged as a low-boiling-point product through the top discharge valve (10). The third stream is connected to the top reflux valve (11) and the three ends of the feed switching three-way valve (1) in sequence via pipelines. The high-boiling-point product is discharged from the bottom of the distillation column (8) through the bottom discharge valve (12). The inlet valve (13) and the flow control valve are also connected to the top reflux valve (11) and the feed switching three-way valve (1) in sequence. The upper end of the controller (14), the gas inlet reactor valve (22), and the tubular reactor (4) are connected in sequence by pipelines. The upper end of the tubular reactor (4), the shut-off valve A (15), the rotor flowmeter A (16), the shut-off valve B (17), and the lower end of the tubular reactor (4) are connected in sequence by pipelines. The lower end of the tubular reactor (4), the shut-off valve C (18), the rotor flowmeter B (19), the shut-off valve D (20), and the upper end of the tubular reactor (4) are connected in sequence by pipelines.

2. The multifunctional adsorption-distillation coupled purification device according to claim 1, characterized in that: After the material enters the distillation column (8) from the tubular reactor (4) after adsorption separation, the flow direction is: end 3 of feed switching three-way valve (1) → end 1 of feed switching three-way valve (1) → end 1 of reactor upper switching three-way valve (2) → end 3 of reactor upper switching three-way valve (2) → upper end of tubular reactor (4) → lower end of tubular reactor (4) → end 3 of reactor lower switching three-way valve (3) → end 2 of reactor lower switching three-way valve (3) → end 2 of discharge switching three-way valve (5) → end 3 of discharge switching three-way valve (5) → system pressure controller (7) → distillation column (8). The material diversion process is: end 3 of reactor upper switching three-way valve (2) → shut-off valve A (15) → rotor flow meter A (16) → shut-off valve B (17) → end 3 of reactor lower switching three-way valve (3).

3. The multifunctional adsorption-distillation coupled purification device according to claim 1, characterized in that: After the material enters the distillation column (8) from the bottom of the tubular reactor (4) and exits from the top after adsorption separation, the flow direction is: end 3 of the feed switching three-way valve (1) → end 2 of the feed switching three-way valve (1) → end 1 of the reactor bottom switching three-way valve (3) → end 3 of the reactor bottom switching three-way valve (3) → bottom of the tubular reactor (4) → top of the tubular reactor (4) → end 3 of the reactor top switching three-way valve (2) → end 2 of the reactor top switching three-way valve (2) → end 1 of the discharge switching three-way valve (5) → end 3 of the discharge switching three-way valve (5) → system pressure controller (7) → distillation column (8). The material diversion process is: end 3 of the reactor bottom switching three-way valve (3) → shut-off valve C (18) → rotor flow meter B (19) → shut-off valve D (20) → end 3 of the reactor top switching three-way valve (2).

4. The multifunctional adsorption-distillation coupled purification device according to claim 1, characterized in that: The outer wall of the tubular reactor (4) is attached with a heating and insulation system (21), and the temperature of the heating and insulation system (21) is controlled at 20℃~400℃.

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