Integrated preparation device for oxygen-enriched gas and water

Abstract

The utility model relates to a gas separation technology, and aims to provide an oxygen-enriched gas and water integrated preparation device. The device comprises an air filter, a ventilator, a negative pressure membrane oxygen enrichment assembly, a vacuum pump and a gas-water separation module, the air filter is sequentially connected with the ventilator and the negative-pressure membrane oxygen-enriched assembly through a pipeline, and no dewatering equipment or dewatering material is arranged on the pipeline in front of the negative-pressure membrane oxygen-enriched assembly; an oxygen-enriched gas outlet of the negative pressure membrane oxygen-enriched assembly is sequentially connected with a vacuum pump and a gas-water separation module through a pipeline, and the gas-water separation module is provided with an oxygen-enriched gas outlet and a water outlet. The device can directly collect fresh water from air and produce oxygen-enriched gas, is suitable for special requirements of severe environments such as plateau and desert, and has the characteristics of low operation energy consumption and device integration; the method can be applied to various oxygen-enriched combustion-supporting industrial scenes, and combustion energy conservation and yield and efficiency improvement are achieved; the electric automatic control system can further improve the reliability and stability of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of gas separation, in particular to an integrated preparation device for oxygen-rich gas and water. Background Art

[0002] In plateaus or deserts, where the natural environment is extremely harsh, the scarcity of fresh water resources and oxygen is particularly prominent. Due to the huge difficulties in residents' lives or other activities, the demand for how to quickly and efficiently produce oxygen-rich gas and collect fresh water is more urgent. In the prior art, the methods for separating fresh water from air include condensation method, desiccant method and freezing method. However, due to the problems of high energy consumption and large amount of consumables, it is difficult to meet the actual production needs.

[0003] The use of membrane separation to separate oxygen-rich air and nitrogen-rich air from air is a mature technology, but it is limited to air separation applications. In addition, membrane separation can also be applied to water separation, but it is usually only used in pure liquid water separation scenarios (such as pure water production).

[0004] Currently, there is no application technology that can use air to simultaneously produce liquid water and oxygen-rich gas. For special application scenarios that require the provision of both oxygen-rich gas and water, no solution can be provided. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide an integrated preparation device for oxygen-rich gas and water.

[0006] To solve the technical problem, the solution of the utility model is:

[0007] Provided is an integrated preparation device for oxygen-enriched gas and water, the device comprising: an air filter, a ventilator, a negative pressure membrane oxygen-enriched component, a vacuum pump and a gas-water separation module; wherein the air filter is sequentially connected to the ventilator and the negative pressure membrane oxygen-enriched component through a pipeline, and no water removal equipment or dehydration material is arranged on the pipeline before the negative pressure membrane oxygen-enriched component; the oxygen-enriched gas outlet of the negative pressure membrane oxygen-enriched component is sequentially connected to the vacuum pump and the gas-water separation module through a pipeline, and the gas-water separation module is provided with an oxygen-enriched gas outlet and a drain;

[0008] The negative pressure membrane oxygen enrichment component comprises a rectangular box body, a plurality of air vents are arranged on the side panels of the air inlet and the air outlet of the box body, the air inlet end is connected to the ventilator through a pipeline and the air outlet end is directly connected to the atmosphere; a plurality of groups of membrane structures arranged in parallel are arranged inside the box body, and an exhaust pipe is arranged at the end of each group of membrane structures; a spacing is maintained between two adjacent groups of membrane structures to form an air flow channel, one end of the air flow channel is connected to the air inlet end of the box body for introducing air, and the other end is connected to the exhaust end of the box body for removing nitrogen-rich air that cannot penetrate the membrane material; after water molecules and oxygen enter the membrane structure, they are collected into the gas collecting pipe through the exhaust pipe, and the oxygen-rich gas outlet is arranged at the end of the gas collecting pipe.

[0009] As an improved solution, the membrane structure is a plate-type membrane structure or a roll-type membrane structure made of any one membrane material of polysulfone, polyimide or polyphenylene ether.

[0010] As an improved solution, the plate-type membrane structure is composed of two pieces of membrane materials arranged in parallel and maintaining a distance, the sides and both ends of which are closed to form a cavity, and an exhaust pipe is provided at one closed end to be connected to a gas collecting pipe.

[0011] As an improved solution, the gas-water separation module includes a condensate collector and a water storage tank; a condenser is provided inside the condensate collector, an oxygen-rich gas pipeline is provided on the top, and the bottom is connected to the water storage tank through a pipeline.

[0012] As an improved solution, the gas-water separation module includes a gas storage tank and a water storage tank; an oxygen-rich gas pipeline is provided on the top of the gas storage tank, and a check valve, a steam trap and a water storage tank are sequentially connected to the bottom through pipelines.

[0013] As an improved solution, the vacuum pump is a dry vacuum pump, specifically any one of a vortex vacuum pump, a screw vacuum pump, a Roots vacuum pump or a magnetically suspended centrifugal vacuum pump.

[0014] As an improved solution, an electrically controlled regulating valve is provided on the pipeline between the vacuum pump and the gas-water separation module.

[0015] As an improved solution, the device also includes an electric automatic control system, which includes an automatic control device and an actuator; the actuator includes an electric control component arranged between the ventilator and the vacuum pump, and an actuator of an electric control regulating valve arranged between the vacuum pump and the gas-water separation module; the automatic control device is connected to the actuator and a gas state sensor on the oxygen-rich gas pipeline of the gas-water separation module through a signal line.

[0016] As an improved solution, the automatic control device is a PLC controller or a DDC controller.

[0017] As an improved solution, the self-control device is also connected to the cloud control platform via wired or wireless communication.

[0018] Technical principle description:

[0019] The membrane separation process of separating air using membrane modules is a relatively mature technology in the application of air separation to produce nitrogen-rich gas and oxygen-rich gas. However, since moisture is generally regarded as a harmful component that affects the quality of gas products, it is necessary to first use a dryer, dryer or desiccant to remove water before the compressed air can be introduced into the membrane separation module; then, the selective permeability difference of organic polymer dense membrane to nitrogen and oxygen is used to obtain oxygen-rich gas and nitrogen-rich gas.

[0020] The inventor team of the applicant noticed that both water molecules and oxygen molecules in the air are "fast gases" with higher permeation rates. Therefore, when designing the device of the utility model, the applicant broke through the conventional inertial thinking that "water is a harmful component in air separation" and proposed the design scheme of the present application by utilizing the membrane material's permeability selectivity to both oxygen and water molecules. Since the membrane material allows water vapor and oxygen in the air to pass through, and prevents the passage of other gas molecules or impurities; when the air is separated by the membrane, a gas-liquid multiphase flow can be formed on the other side of the membrane. Therefore, liquid water can be collected while separating oxygen-rich gas by natural condensation or other means, thereby satisfying the purpose of simultaneously supplying oxygen-rich gas and fresh water to the outside. Based on the above principles, the device of the utility model can directly collect water and oxygen-rich gas from the air, providing a sustainable and environmentally friendly solution for fresh water and oxygen resources for water-deficient and oxygen-demanding areas (such as plateau areas where materials are scarce and transportation costs are high).

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The utility model can directly collect fresh water and produce oxygen-rich gas from the air, is suitable for special needs in harsh environments such as plateaus and deserts, and has the characteristics of low operating energy consumption and integrated device.

[0023] 2. The oxygen-rich gas produced by the utility model can also be applied to various oxygen-enriched combustion-assisted industrial scenarios to achieve combustion energy saving and increase production efficiency.

[0024] 3. The electric automatic control system based on the device of the utility model can further improve the reliability and stability of the device; after the device is connected to the cloud platform, it can further realize digital intelligent management and control and remote operation and maintenance, laying the foundation for the long-term stable operation and efficient management and control of the device.

[0025] 4. Compared with the traditional air separation process using positive pressure membrane oxygen enrichment components, the utility model uses negative pressure membrane oxygen enrichment components that do not require additional high-pressure gas, so there is no need to equip additional more expensive boosting equipment, which can reduce the equipment cost and operating energy consumption of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an integrated preparation device for oxygen-rich gas and water;

[0027] Figure 2 It is a schematic diagram of the structure of another integrated preparation device for oxygen-rich gas and water;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the negative pressure membrane oxygen enrichment component;

[0029] Figure 4 It is a structural diagram of the electric automatic control system.

[0030] The accompanying drawings are marked as follows: 1. air filter; 2. ventilator; 3. negative pressure membrane oxygen enrichment component; 301. box; 302. gas collecting pipe; 303. membrane structure; 4. vacuum pump; 5. electric control valve; 7. condensate collector; 8. water storage tank; 9. gas state sensor; 11. actuator; 12. automatic control equipment; 13. cloud control platform; 14. gas storage tank; 15. inspection valve; 16. steam trap; 200. electric automatic control system. DETAILED DESCRIPTION

[0031] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0032] Part I. Structural Layout of the Device

[0033] like Figure 1 , 2 As shown, the integrated preparation device for oxygen-enriched gas and water described in the utility model includes: an air filter 1, a ventilator 2, a negative pressure membrane oxygen-enriched component 3, a vacuum pump 4 and a gas-water separation module. Among them, the air filter 1 is connected to the ventilator 2 and the negative pressure membrane oxygen-enriched component 3 in sequence through a pipeline, and no water removal equipment or dehydration material is provided on the pipeline before the negative pressure membrane oxygen-enriched component 3, which is the innovative design point of the device. The nitrogen-enriched gas outlet of the negative pressure membrane oxygen-enriched component 3 leads to the atmosphere, and its oxygen-enriched gas outlet is connected to the vacuum pump 4, the electrically controlled regulating valve 5 and the gas-water separation module in sequence through a pipeline, and the gas-water separation module is provided with an oxygen-enriched gas outlet and a drain.

[0034] The negative pressure membrane oxygen enrichment component 3 includes a rectangular box 301, and a number of vents are arranged on the side panels of the air inlet and exhaust ends of the box 301. The air inlet is connected to the ventilator 2 through a pipeline, and the exhaust end is directly connected to the atmosphere; multiple groups of parallel membrane structures 303 are arranged inside the box, and an exhaust pipe is arranged at the end of each group of membrane structures 303; an air flow channel is formed by maintaining a distance between two adjacent groups of membrane structures 303, one end of the air flow channel is connected to the air inlet end of the box for introducing air, and the other end is connected to the exhaust end of the box for removing nitrogen-rich air that cannot pass through the membrane material; water molecules and oxygen enter the membrane structure 303 and are collected into the air collecting pipe 302 through the exhaust pipe, and the oxygen-rich air outlet is set at the end of the air collecting pipe 302. The design of multiple groups of parallel membrane structures can greatly increase the surface area of ​​the membrane material used to pass water molecules and oxygen in a limited box space.

[0035] The membrane structure 303 is a plate-type membrane structure or a roll-type membrane structure made of any one of polysulfone, polyimide or polyphenylene ether membrane materials. Figure 2 As shown in , the plate membrane structure is composed of two pieces of membrane materials arranged in parallel and maintaining a distance, the sides and both ends of which are closed to form a cavity, and an exhaust pipe is provided at one of the closed ends to connect to the gas collecting pipe 302. The membrane material can be flexibly selected according to different application environments. For example, in certain occasions, polysulfone materials are favored due to their excellent stability and separation efficiency; in other scenarios, polyimide is preferred due to its excellent high temperature resistance; in addition, polyphenylene ether materials stand out in certain specific applications due to their good chemical stability and mechanical strength. This diverse selection of materials ensures that the negative pressure membrane oxygen enrichment component 3 can adapt to various complex environments and perform at its best.

[0036] There are many types of gas-water separation modules available. For example, Figure 1 The gas-water separation module includes a condensate collector 7 and a water storage tank 8; a condenser is arranged inside the condensate collector 7, an oxygen-rich gas pipeline is arranged on the top, and the bottom is connected to the water storage tank 8 through a pipeline. Figure 2 The gas-water separation module includes a gas storage tank 14 and a water storage tank 8; water naturally settles in the gas storage tank 14 and accumulates at the bottom. An oxygen-enriched gas pipeline is provided at the top of the gas storage tank 14, and the bottom is connected to a check valve 15, a steam trap 16 and a water storage tank 8 in sequence through pipelines. A gas state sensor 9 is provided on the oxygen-enriched gas pipeline to monitor the pressure, flow rate and temperature of the oxygen-enriched air.

[0037] The device also includes an electric automatic control system, which includes an automatic control device 12 and an actuator 11 connected by a signal line; the actuator 11 includes an electric control component provided on the ventilator and the vacuum pump, and an actuator of the electric control valve 5. The automatic control device 12 can adopt a PLC controller or a DDC controller, receive a signal from the gas state sensor 9 through a signal line, and transmit an action execution signal to the actuator 11 through the signal line. Furthermore, the automatic control device 12 can also be connected to the cloud control platform through wired or wireless communication. The operator can log in to the cloud control platform 13 through a computer or mobile terminal, and use the software program to realize the digital intelligent control and remote operation and maintenance of the device operation process.

[0038] In the utility model, the ventilator 2 can adopt a centrifugal ventilator with mature market. The negative pressure membrane oxygen enrichment component 3 can select the publicly sold ZOE01-5 commercial product, which has a rated flow of 5000L / H and an oxygen enrichment concentration of 29%. The vacuum pump 4 is a dry vacuum pump, which can be any one of a vortex vacuum pump, a screw vacuum pump, a Roots vacuum pump or a magnetic levitation centrifugal vacuum pump. The electric control regulating valve 5 can select an electric butterfly valve or an electric gate valve to control or shut off the airflow. The condensate collector 7 can adopt a vertical condensate collector with mature market.

[0039] Part 2. Device Operation Method Description

[0040] (1) Start the ventilator 2 to filter impurities through the air filter 1. The filtered air flows to the ventilator 2 as raw air, where it is raised to a slightly positive pressure state to overcome the resistance in the pipeline and enters the negative pressure membrane oxygen enrichment assembly 3 from the air inlet end of the box 301.

[0041] (2) Start the vacuum pump, and draw air to form a negative pressure in the inner cavity of the gas collecting pipe 302, the membrane structure 303 and the exhaust pipe on one side of the membrane material in the negative pressure membrane oxygen enrichment component 3. Under the action of the negative pressure, oxygen and water molecules can quickly pass through the membrane material due to their permeability selectivity and form a gas-water mixed multiphase flow on the negative pressure side. At the same time, nitrogen and other impurities are blocked on the other side of the membrane material, and are discharged into the atmosphere from the exhaust end of the box 301 due to the slight positive pressure formed by the ventilator 2, so as not to accumulate in the negative pressure membrane oxygen enrichment component 3.

[0042] (3) The gas-water mixed multiphase flow enters the gas-water separation module from the oxygen-rich gas outlet of the negative pressure membrane oxygen-enriched component 3, where the water contained in the mixed multiphase flow is separated from the oxygen-rich gas by condensation or natural sedimentation, and is discharged from respective pipelines to realize water-gas diversion and external supply.

[0043] As a specific example, an integrated device is constructed in the above manner using a ZOE01-5 negative pressure membrane oxygen enrichment component (in conjunction with other appropriately selected equipment); the device can be used to produce a flow rate of 60m3 under the condition of an air humidity of 40-50%. 3 / h, 29% oxygen-rich gas, and 0.7-1kg / h of water. The gas-water mixed multiphase flow flows through the pipeline through the electronically controlled regulating valve 5 and then flows into the condensate collector 7 or the gas storage tank 14, and after the gas and water are separated, they are supplied to the outside in the form of oxygen products and liquid water products.

[0044] Figure 1 Example usage process: After the gas-water mixed multiphase flow enters the condensate collector 7, the water vapor and water droplets therein are condensed and collected and flow into the water storage tank 8 through the liquid water pipeline at the end for storage and supply to the outside as fresh water resources. At the same time, the oxygen-rich gas with a concentration of about 29% in the condensate collector 7 is discharged through the oxygen-rich pipeline, which is suitable for civil scenarios where the gas produced by the vacuum pump 4 is directly used for external supply.

[0045] Figure 2 The example usage process is as follows: the gas-water mixed multiphase flow enters the gas tank 14 for buffering, and the water vapor and water droplets therein fall to the bottom of the gas tank 14 due to the influence of gravity. When the water accumulates to a certain amount, it will be discharged through the steam trap 16 and stored in the water tank 8. The pressurized oxygen-rich gas in the gas tank 14 flows out through the oxygen-rich pipeline and can be used in industrial production scenarios that require oxygen-rich combustion.

[0046] In order to realize the digital start and stop control of energy-consuming equipment such as the ventilator 2 and the vacuum pump 4, and at the same time facilitate users to read the parameter values ​​of the oxygen-enriched gas flow and concentration; in the electric automatic control system 200, users can directly use a computer (or mobile terminal) to log in to the cloud control platform 13 in the form of a software program through wired or wireless communication to control, and remotely start and stop the energy-consuming equipment such as the ventilator 2 and the vacuum pump 4 through the automatic control device 12 and the actuator 11. At the same time, after the gas state sensor 9 on the oxygen-enriched pipeline transmits data to the automatic control device 12 for processing, the data such as the oxygen-enriched gas flow and concentration in the corresponding pipeline can be uploaded to the cloud control platform 13 for users to read.

[0047] In summary, this device can directly collect fresh water and produce oxygen-rich gas from the air, which is suitable for special needs in harsh environments such as plateaus and deserts; it has the characteristics of low operating energy consumption and integrated device, and can also be used in oxygen-enriched combustion scenarios. In addition, the reliability and stability of the device are improved through the electric automatic control system, and the device can realize digital intelligent management and remote operation and maintenance after being connected to the cloud control platform.

[0048] It should be noted that the present utility model may involve computer control technology during actual use. For example, the use of the automatic control device 12 will involve the application of embedded software, and the cloud control platform 13 will involve the application of server or platform management software. However, the content of these software programs themselves to realize their functions does not belong to the protection scope of the present utility model. The applicant believes that after carefully reading the application documents and accurately understanding the implementation principle and purpose of the present utility model, in combination with the existing known technology, the technical personnel in this field can fully use the software programming skills they have mastered to realize the present utility model. A large number of existing public documents provide implementation solutions for relevant software function modules from various angles, which belong to the existing technology that the technical personnel in this field have mastered, so these are not the contents that must be recorded in the present utility model. The innovation of the present utility model lies in the organic combination and connection of hardware devices or components that were originally used independently, and the implementation process of the relevant calculation or control method does not belong to the scope of protection of the present utility model.

Claims

1. An integrated production device for oxygen-rich gas and water, characterized in that: The device comprises: an air filter, a ventilator, a negative pressure membrane oxygen enrichment component, a vacuum pump and a gas-water separation module; wherein the air filter is sequentially connected to the ventilator and the negative pressure membrane oxygen enrichment component through a pipeline, and no water removal equipment or dehydration material is arranged on the pipeline before the negative pressure membrane oxygen enrichment component; the oxygen-enriched gas outlet of the negative pressure membrane oxygen enrichment component is sequentially connected to the vacuum pump and the gas-water separation module through a pipeline, and the gas-water separation module is provided with an oxygen-enriched gas outlet and a drain; The negative pressure membrane oxygen enrichment component comprises a rectangular box body, a plurality of air vents are arranged on the side panels of the air inlet and the air outlet of the box body, the air inlet end is connected to the ventilator through a pipeline and the air outlet end is directly connected to the atmosphere; a plurality of groups of membrane structures arranged in parallel are arranged inside the box body, and an exhaust pipe is arranged at the end of each group of membrane structures; a spacing is maintained between two adjacent groups of membrane structures to form an air flow channel, one end of the air flow channel is connected to the air inlet end of the box body for introducing air, and the other end is connected to the exhaust end of the box body for removing nitrogen-rich air that cannot penetrate the membrane material; after water molecules and oxygen enter the membrane structure, they are collected into the gas collecting pipe through the exhaust pipe, and the oxygen-rich gas outlet is arranged at the end of the gas collecting pipe.

2. The integrated production device of oxygen-rich gas and water according to claim 1, characterized in that: The membrane structure is a plate-type membrane structure or a roll-type membrane structure made of any one of polysulfone, polyimide or polyphenylene ether membrane materials.

3. The integrated oxygen-rich gas and water production device according to claim 2, characterized in that: The plate-type membrane structure is composed of two pieces of membrane materials arranged in parallel and maintaining a distance, the sides and both ends of which are closed to form a cavity, and an exhaust pipe is arranged at one closed end to be connected to a gas collecting pipe.

4. The integrated oxygen-rich gas and water production device according to claim 1, characterized in that: The gas-water separation module comprises a condensate collector and a water storage tank; a condenser is arranged inside the condensate collector, an oxygen-rich gas pipeline is arranged on the top, and the bottom is connected to the water storage tank through a pipeline.

5. The integrated oxygen-rich gas and water production device according to claim 1, characterized in that: The gas-water separation module comprises an air storage tank and a water storage tank; an oxygen-rich gas pipeline is arranged on the top of the air storage tank, and a check valve, a steam trap and a water storage tank are sequentially connected to the bottom of the air storage tank through pipelines.

6. The integrated production device of oxygen-rich gas and water according to claim 1, characterized in that: The vacuum pump is a dry vacuum pump, specifically any one of a vortex vacuum pump, a screw vacuum pump, a Roots vacuum pump or a magnetic levitation centrifugal vacuum pump.

7. The integrated oxygen-rich gas and water production device according to claim 1, characterized in that: An electric control regulating valve is arranged on the pipeline between the vacuum pump and the gas-water separation module.

8. The integrated oxygen-rich gas and water production device according to any one of claims 1 to 7, characterized in that: The device also includes an electric automatic control system, which includes automatic control equipment and an actuator; the actuator includes an electric control component arranged between the ventilator and the vacuum pump, and an actuator of an electric control regulating valve arranged between the vacuum pump and the gas-water separation module; the automatic control equipment is connected to the actuator and a gas state sensor on the oxygen-rich gas pipeline of the gas-water separation module through a signal line.

9. The integrated oxygen-rich gas and water production device according to claim 8, characterized in that: The automatic control device is a PLC controller or a DDC controller.

10. The integrated oxygen-rich gas and water production device according to claim 8, characterized in that: The self-control device is connected to the cloud control platform via wired or wireless communication.

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