Gas-liquid separation device for producing hydrogen from methanol

Abstract

The gas-liquid separation device comprises a separation tank, the separation tank comprises a tank body and a sealing cover which are connected with each other, a gas inlet pipe is arranged at the bottom of the tank body, an exhaust pipe is arranged on the sealing cover, and electromagnetic valves are arranged on the gas inlet pipe and the exhaust pipe; the separation tank is filled with an adsorbent, a heating module and a controller are further arranged on the separation tank, and the heating module and the electromagnetic valves are electrically connected with the controller; during use, tail gas enters the separation tank through the gas inlet pipe, the adsorbent absorbs water vapor, and the absorbed gas is exhausted from the exhaust pipe; after the adsorbent is saturated, the air inlet pipe is closed through the electromagnetic valve, the heating module is opened for heating, the heated adsorbent releases absorbed water vapor, and the water vapor is discharged through the exhaust pipe, so that regeneration of the adsorbent is realized; separation of the adsorbent and water vapor is achieved in a heating mode, regeneration of the adsorbent is achieved on the premise that the separation tank is not opened, the difficulty of equipment maintenance is effectively lowered, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of gas-liquid separation equipment, and in particular to a gas-liquid separation device for producing hydrogen from methanol. Background Art

[0002] Methanol-to-hydrogen is currently the main hydrogen production technology route adopted in my country. The tail gas produced by methanol-to-hydrogen production mainly consists of hydrogen, carbon dioxide and a small amount of water vapor. In the existing technology, water vapor in the tail gas is generally adsorbed by an adsorption device. However, the adsorption device in the existing technology must be opened for inspection and replacement of the adsorbent after a period of use, making the equipment difficult to maintain. Utility Model Content

[0003] The main purpose of this application is to provide a gas-liquid separation device for producing hydrogen from methanol, aiming to solve the defect of difficult overhaul and maintenance in the prior art.

[0004] This application achieves the above objectives through the following technical solutions:

[0005] A gas-liquid separation device for producing hydrogen from methanol, comprising a separation tank;

[0006] An air inlet pipe is connected to the bottom of the separation tank; an exhaust pipe is also provided on the top of the separation tank; and solenoid valves are provided on both the air inlet pipe and the exhaust pipe;

[0007] an adsorbent, wherein the adsorbent is filled in the separation tank;

[0008] A heating module, wherein the heating module is arranged on the separation tank;

[0009] A controller is provided on the separation tank, and the heating module and each of the solenoid valves are electrically connected to the controller respectively.

[0010] Optionally, the separation tank is further provided with a recoil pipe, one end of which is connected to a high-pressure gas source, and the recoil pipe is further provided with a regulating valve electrically connected to the controller.

[0011] Optionally, a mounting sleeve is provided in the recoil pipe, the air intake pipe and the exhaust pipe, and an isolation net is provided in the mounting sleeve; and a guide surface with a conical structure is provided at the inlet end of the mounting sleeve.

[0012] Optionally, a first water vapor sensor is provided on the intake pipe, and a second water vapor sensor is provided on the exhaust pipe, and the first water vapor sensor and the second water vapor sensor are electrically connected to the controller respectively.

[0013] Optionally, at least two separation tanks are provided, each of the separation tanks is independent of each other, the air inlet pipe is connected to the two separation tanks respectively, and the exhaust pipe is connected to the two separation tanks respectively; both separation tanks are filled with an adsorbent made of activated alumina.

[0014] Optionally, a support column is provided in the separation tank, a spiral plate is provided on the support column, and an outer side of the spiral plate is in contact with the inner wall of the separation tank.

[0015] Optionally, a sealing strip is clamped on the edge of the spiral plate, and the sealing strip is in contact with the inner wall of the separation tank.

[0016] Optionally, the separation tank is made of non-metallic material, and the heating module includes a spiral heating tube, which is electrically connected to the controller.

[0017] Optionally, the controller includes a touch screen and a PLC, and the touch screen is electrically connected to the PLC.

[0018] Optionally, the separation tank includes a tank body, the top of the tank body is provided with a sealing cover, and mutually matching flanges are provided between the tank body and the sealing cover, and the two flanges are connected by a plurality of connecting bolts.

[0019] Compared with the prior art, this application has the following effects:

[0020] The present application includes a separation tank, wherein an air inlet pipe is provided at the bottom of the separation tank, an exhaust pipe is provided at the top thereof, and solenoid valves are provided on both the air inlet pipe and the exhaust pipe; the separation tank is filled with an adsorbent, and a heating module and a controller are also provided on the separation tank, wherein the heating module and each of the solenoid valves are electrically connected to the controller respectively;

[0021] When the present application is used, the tail gas discharged from the hydrogen production equipment directly enters the separation tank through the intake pipe, and the adsorbent filled in the adsorption tank absorbs the water vapor in the tail gas, and the absorbed gas is discharged from the exhaust pipe; when the adsorbent is saturated, the intake pipe is closed by the solenoid valve, and the heating module is turned on to heat the adsorbent. The heated adsorbent releases the absorbed water vapor and discharges it through the exhaust pipe, thereby achieving adsorbent regeneration. At this time, the intake pipe is opened again, and the heating module is turned off to allow the adsorbent to adsorb water vapor again, thereby achieving gas-liquid separation;

[0022] Compared with the existing technology, the present application realizes the separation of the adsorbent and water vapor by heating, thereby realizing the regeneration of the adsorbent without opening the separation tank, and then realizing the continuous operation of the equipment, which is not only conducive to improving the operating efficiency of the equipment, but also can effectively reduce the difficulty of equipment maintenance and improve maintenance efficiency.

[0023] Secondly, the present application can realize the regeneration and maintenance of the adsorbent by controlling the on-off state of the pipeline through the solenoid valve, and its operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a gas-liquid separation device for producing hydrogen from methanol provided in embodiment 1 of the present application;

[0025] Figure 2 A cross-sectional view of a gas-liquid separation device for producing hydrogen from methanol provided in embodiment 1 of the present application;

[0026] Figure 3 Schematic diagram of the structure of the isolation network;

[0027] Figure markings: 1-separation tank, 2-inlet pipe, 3-exhaust pipe, 4-solenoid valve, 5-adsorbent, 6-controller, 7-recoil pipe, 8-regulating valve, 9-installation sleeve, 10-isolation net, 11-guide surface, 12-first water vapor sensor, 13-second water vapor sensor, 14-support column, 15-spiral plate, 16-sealing strip, 17-spiral heating tube, 101-tank body, 102-sealing cover, 103-flange, 104-connecting bolt, 601-touch screen, 602-PLC.

[0028] The purpose, features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Implementation Method 1

[0034] Reference Figures 1 to 3 This embodiment, as an optional embodiment of the present application, discloses a gas-liquid separation device for producing hydrogen from methanol, comprising a separation tank 1, wherein the separation tank 1 comprises a tank body, a sealing cover 102 is provided on the top of the tank body, and a flange 103 is provided between the tank body 101 and the sealing cover 102, and the two flanges 103 are connected by a plurality of connecting bolts 104; it should be noted that the tank body is made of non-metallic materials such as fiberglass reinforced plastics;

[0035] At the same time, the above structure can ensure that the separation tank 1 can be quickly disassembled and opened, providing convenient conditions for subsequent inspection and maintenance;

[0036] An air inlet pipe 2 is provided at the bottom of the tank body 101, and an exhaust pipe 3 is provided on the sealing cover 102. A support column 14 is also provided in the tank body 101. The support column 14 is coaxial with the tank body 101 and is provided with a spiral plate 15. The outer edge of the spiral plate 15 is clamped with a sealing strip 16. The sealing strip 16 is tightly fitted with the inner surface of the tank body 101 to improve the sealing effect; the inner end surface of the sealing cover 102 is tightly fitted with the top surface of the support column 14;

[0037] The support column 14 and the spiral plate 15 can isolate the internal space of the separation tank 1 into a spiral structure, and the airflow entering the separation tank 1 can only flow along the spiral trajectory. On the one hand, this prolongs the residence time of the airflow in the separation tank 1, thereby providing sufficient adsorption time for the adsorbent 5 and improving the gas-liquid separation effect; on the other hand, the spiral plate 15 can make the flow of the airflow more regular, thereby avoiding the formation of airflow dead corners in the separation tank 1 and improving the flow efficiency of the airflow.

[0038] The separation tank 1 is also filled with an adsorbent 5, which is made of activated alumina. The adsorbent 5 completely fills the spiral space divided by the spiral plate 15.

[0039] A backwash pipe 7 is further provided at the bottom of the tank body 101. A regulating valve 8 is provided on the backwash pipe 7. The inlet end of the backwash pipe 7 is connected to a high-pressure gas source.

[0040] At the same time, a mounting sleeve 9 is provided in the recoil pipe 7, the intake pipe 2 and the exhaust pipe 3, and an isolation net 10 is provided in the mounting sleeve 9; the inlet end of the mounting sleeve 9 is provided with a guide surface with a conical structure;

[0041] The isolation net 10 can isolate the recoil pipe 7, the air inlet pipe 2 and the exhaust pipe 3 from the adsorbent 5, preventing the adsorbent 5 from entering the various pipes, thereby ensuring the stable and continuous operation of the equipment. At the same time, the isolation net 10 can be accurately and stably installed in each pipe through the installation sleeve 9, and is easy to disassemble, which is conducive to improving the maintenance efficiency of the equipment.

[0042] The setting of the guide surface can effectively reduce the impact of the airflow on the installation sleeve 9, on the one hand, ensuring the stability of the equipment; on the other hand, reducing the flow rate loss;

[0043] A solenoid valve 4 is provided on both the air inlet pipe 2 and the exhaust pipe 3. A controller 6 is also provided on the separation tank 1. The controller 6 includes a touch screen 601 and a PLC 602. The touch screen 601 is electrically connected to the PLC 602.

[0044] At the same time, a first water vapor sensor 12 is provided on the intake pipe 2, and a second water vapor sensor 13 is provided on the exhaust pipe 3. The first water vapor sensor 12 and the second water vapor sensor 13 are electrically connected to the controller 6 respectively;

[0045] The gas-liquid separation device further includes a heating module, which includes a spiral heating tube 17, and the spiral heating tube 17 is placed on the separation tank 1; it should be noted that the support column 14 is made of metal material;

[0046] Furthermore, the support column 14 can also be made of non-metal such as glass fiber reinforced plastic, and some iron balls or iron particles can be mixed into the adsorbent 5;

[0047] When the gas-liquid separation device is in use, the recoil pipe 7 is closed by the regulating valve 8, and the inlet pipe 2 and the exhaust pipe 3 are opened at the same time. The gas enters the bottom of the separation tank 1 from the inlet pipe 2, and after moving along a spiral path, the water vapor is absorbed by the adsorbent 5, and the separated gas is discharged from the exhaust pipe 3 at the top;

[0048] At the same time, the first water vapor sensor 12 and the second water vapor sensor 13 monitor the change of water vapor. When the difference between the two is lower than the set value, it is determined that the adsorbent 5 is saturated. At this time, the solenoid valve 4 closes the intake pipe 2 and opens the recoil pipe 7. At the same time, the spiral heating tube 17 is connected to the alternating current, so that the metal particles in the adsorbent 5 are heated by eddy current to increase the temperature of the adsorbent 5. When the temperature reaches 175-315°C, the adsorbent 5 will gradually release the absorbed water vapor. At this time, the high-speed airflow discharged from the recoil pipe 7 carries the water vapor into the exhaust pipe 3, and is finally discharged from the exhaust pipe 3.

[0049] At the same time, the water vapor concentration is detected by the second water vapor sensor 13 located on the exhaust pipe 3. When the water vapor concentration is lower than the set value, it is determined that the water vapor absorbed by the adsorbent 5 is completely discharged and the adsorbent 5 is regenerated. At this time, the recoil pipe 7 is closed by the regulating valve 8, the heating module is turned off, and the intake pipe 2 is opened again.

[0050] Flushing high-pressure air into the separation tank 1 through the backflush pipe 7 can effectively drive the water vapor to be discharged, thereby improving the regeneration efficiency of the adsorbent 5 and extending the effective working time of the equipment; secondly, the high-speed airflow can more thoroughly discharge the water vapor, preventing the water vapor from being adsorbed again by the adsorbent 5, thereby improving the regeneration rate of the adsorbent 5.

[0051] Furthermore, at least two separation tanks 1 are provided, each of which is independent of the other. The air intake pipe 2 is connected to the two separation tanks 1 in parallel, and the exhaust pipe 3 is also connected to the two separation tanks 1 in parallel. A solenoid valve 4 is provided on each branch of the air intake pipe 2 and the exhaust pipe 3.

[0052] When multiple separation tanks 1 are set up, some separation tanks 1 are in the adsorption state, and some are in the adsorbent 5 regeneration state. On the one hand, it ensures that the equipment is always in the adsorption state and improves the exhaust gas treatment capacity as much as possible; on the other hand, it can effectively improve the redundancy of the equipment. In the case of maintenance and failure of some separation tanks 1, the entire device can still operate normally, thereby improving the stability of the equipment.

[0053] Compared with the existing technology, the present application realizes the separation of the adsorbent and water vapor by heating, thereby realizing the regeneration of the adsorbent without opening the separation tank, and then realizing the continuous operation of the equipment, which is not only conducive to improving the operating efficiency of the equipment, but also can effectively reduce the difficulty of equipment maintenance and improve maintenance efficiency.

[0054] Secondly, the present application can realize the regeneration and maintenance of the adsorbent by controlling the on-off state of the pipeline through the solenoid valve, and its operation is simple.

[0055] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A gas-liquid separation device for producing hydrogen from methanol, characterized in that: comprising a separation tank (1); An air intake pipe (2), the air intake pipe (2) being connected to the bottom of the separation tank (1); an exhaust pipe (3) being further provided at the top of the separation tank (1); and solenoid valves (4) being provided on both the air intake pipe (2) and the exhaust pipe (3); an adsorbent (5), wherein the adsorbent (5) is filled in the separation tank (1); A heating module, the heating module being arranged on the separation tank (1); A controller (6) is provided on the separation tank (1), and the heating module and each of the solenoid valves (4) are electrically connected to the controller (6) respectively.

2. A gas-liquid separation device for producing hydrogen from methanol according to claim 1, characterized in that: The separation tank (1) is further provided with a recoil pipe (7), one end of which is connected to a high-pressure gas source, and the recoil pipe (7) is further provided with a regulating valve (8) electrically connected to the controller (6).

3. A gas-liquid separation device for producing hydrogen from methanol according to claim 2, characterized in that: The recoil pipe (7), the air inlet pipe (2) and the exhaust pipe (3) are all provided with mounting sleeves (9), and an isolation net (10) is provided in the mounting sleeves (9); the inlet ends of the mounting sleeves (9) are all provided with guide surfaces with a conical structure.

4. The gas-liquid separation device for producing hydrogen from methanol according to claim 1, characterized in that: The intake pipe (2) is provided with a first water vapor sensor (12), and the exhaust pipe (3) is provided with a second water vapor sensor (13). The first water vapor sensor (12) and the second water vapor sensor (13) are electrically connected to the controller (6), respectively.

5. The gas-liquid separation device for producing hydrogen from methanol according to claim 1, characterized in that: At least two separation tanks (1) are provided, each of the separation tanks (1) is independent of each other, the air inlet pipe (2) is respectively connected to the two separation tanks (1), and the exhaust pipe (3) is respectively connected to the two separation tanks (1); both separation tanks (1) are filled with an adsorbent (5) made of activated alumina.

6. The gas-liquid separation device for producing hydrogen from methanol according to claim 1, characterized in that: A support column (14) is provided in the separation tank (1), a spiral plate (15) is provided on the support column (14), and the outer side of the spiral plate (15) is in contact with the inner wall of the separation tank (1).

7. The gas-liquid separation device for producing hydrogen from methanol according to claim 6, characterized in that: A sealing strip (16) is clamped on the edge of the spiral plate (15), and the sealing strip (16) is in contact with the inner wall of the separation tank (1).

8. The gas-liquid separation device for producing hydrogen from methanol according to claim 1, characterized in that: The separation tank (1) is made of non-metallic material, and the heating module comprises a spiral heating tube (17), which is electrically connected to the controller (6).

9. The gas-liquid separation device for producing hydrogen from methanol according to claim 1, characterized in that: The controller (6) comprises a touch screen (601) and a PLC (602), and the touch screen (601) is electrically connected to the PLC (602).

10. The gas-liquid separation device for producing hydrogen from methanol according to claim 1, characterized in that: The separation tank (1) comprises a tank body (101), the top of the tank body (101) is provided with a sealing cover (102), and mutually matching flanges (103) are provided between the tank body (101) and the sealing cover (102), and the two flanges (103) are connected by a plurality of connecting bolts (104).

Images