Oxygen production device and method based on silver dissolved oxygen mechanism

Abstract

The invention relates to the technical field of oxygen production, and discloses an oxygen production device based on a silver oxygen dissolving mechanism, which comprises a silver smelting oxygen dissolving and releasing system, an ultrasonic vacuum deoxidation device, a vacuum air suction system, a cooling system, an electromagnetic stirring system and an oxygen storage tank, the silver smelting oxygen dissolving and releasing system comprises a silver smelting induction furnace, the interior of the silver smelting induction furnace is divided into an oxygen dissolving chamber and a deoxidizing chamber, and the oxygen dissolving chamber and the deoxidizing chamber are communicated through an open hole. According to the oxygen production device, oxygen is produced through a liquid silver oxygen dissolving and releasing method, namely oxygen is separated and extracted from air according to the characteristic that liquid Ag selectively dissolves and releases oxygen in the air, the purity of the produced oxygen is high, and Ag is almost not consumed in the oxygen production process. The circulating oxygen dissolving and deoxidizing process is achieved through the electromagnetic stirring device and the vacuum-ultrasonic deoxidizing device, the oxygen production efficiency is high, the oxygen production temperature of the silver induction melting furnace is stabilized near the silver melting point (970 DEG C) in the oxygen production process, and therefore the purpose of green and efficient oxygen production is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen production, and in particular to an oxygen production device and method based on a silver-dissolved oxygen mechanism. Background Art

[0002] Oxygen is a condition for human survival and an indispensable element in the sustainable development of society. Oxygen is widely used in industries such as chemical industry, metallurgy, medical treatment, aviation and environmental protection, and its production has become an indispensable part of the national economy. Faced with the huge demand for oxygen, the research on new oxygen production technology that meets high demand, high purity, environmental protection and low consumption is of great significance. There are three main methods of oxygen production at present: physical, chemical and electrochemical. The physical method mainly includes cryogenics, pressure swing adsorption, membrane separation, etc., and the raw materials for oxygen production are all air. The cryogenic method is to produce oxygen through compressed air, with large oxygen production and high purity, but high cost, high energy consumption and low degree of automation; the pressure swing adsorption method has a simple process and low energy consumption, but the oxygen content is high and the molecular sieve is easy to powder; the membrane separation method has a simple structure, but the membrane element is easily damaged, the oxygen purity is not high, and the service life is short. Chemical methods produce oxygen quickly and with high purity, but they are also costly, require complex reaction equipment, are unsafe, and are prone to pollution; electrochemical methods are represented by water electrolysis, which produces oxygen with high purity and stable performance, but consumes a lot of electricity, and the byproduct hydrogen is flammable and explosive, which is a potential safety hazard. By reviewing traditional oxygen production methods, according to different selection application standards and factors, it is shown that researching and developing new oxygen production technologies to obtain high-purity oxygen with higher efficiency and lower consumption is still an important development direction for the industry.

[0003] As we all know, silver absorbs a lot of oxygen in a molten state. Silver hardly absorbs oxygen at room temperature. As the temperature rises, the solubility of oxygen in silver is low until it melts in the air, that is, in a molten state, silver can dissolve more than 20 times its own volume of oxygen, while other gases in the air (N2, H2, CO2, etc.) are difficult to dissolve in silver. When liquid silver solidifies, that is, during the liquid-solid phase transition of silver, most of the dissolved oxygen is desorbed in the "exhaling" state. Using the silver dissolved oxygen theory combined with practice to design an oxygen production device that uses air as raw material and liquid silver as a medium, selectively dissolves oxygen from the atmosphere and releases it at reduced pressure to produce high-purity oxygen, so as to achieve green and high-purity oxygen production, which has very important practical significance and scientific value. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an oxygen production device and method based on the silver dissolved oxygen mechanism.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an oxygen production device based on the silver dissolved oxygen mechanism, comprising a silver smelting dissolving oxygen system, an ultrasonic vacuum deoxidation device, a vacuum suction system, a cooling system, an electromagnetic stirring system and an oxygen storage tank;

[0006] The silver smelting oxygen dissolving and releasing system comprises a silver smelting induction furnace, the interior of the silver smelting induction furnace is divided into an oxygen dissolving chamber and a deoxidation chamber, the oxygen dissolving chamber and the deoxidation chamber are connected through an opening, the entrance of the oxygen dissolving chamber is open for full contact with the air environment, the top of the deoxidation chamber is sealed and connected to a vacuum suction system, so that the interior of the deoxidation chamber is in a negative pressure state;

[0007] The ultrasonic vacuum deoxidation device comprises an ultrasonic signal generator, a transducer and an ultrasonic horn, wherein the ultrasonic signal generator and the transducer are located at the top of the deoxidation chamber, and the ultrasonic horn extends to the interior of the deoxidation chamber;

[0008] The vacuum suction system includes an air cooler and a vacuum pump, wherein the air inlet end of the air cooler is connected to the deoxygenation chamber through an exhaust pipe, the exhaust end of the air cooler is connected to the vacuum pump, and the other end of the vacuum pump is connected to the oxygen storage tank, so as to collect the deoxygenated and cooled oxygen into the oxygen storage tank;

[0009] The cooling system comprises a cooling tower, a circulating water pump and a compensating water tank, and is used to cool the silver smelting induction furnace, an air cooler and a vacuum pump.

[0010] Preferably, the shell of the silver smelting induction furnace is a double-layer structure, including a furnace shell and a furnace lining, and an electromagnetic induction coil for heating is arranged between the double-layer structure.

[0011] Preferably, the electromagnetic stirring system is composed of an electromagnetic pump, one end of which extends into the oxygen dissolving chamber, and utilizes the generated electromagnetic force to push the liquid silver to move regularly from the oxygen dissolving chamber to the deoxygenation chamber.

[0012] Preferably, the water inlet of the cooling tower is connected to the device to be cooled, and the water outlet is connected to the compensation water tank. The circulating water pump is connected to the compensation water tank and transports the cold water flow to the device to be cooled to achieve water recycling. The device to be cooled is a silver smelting induction furnace, an air cooler and a vacuum pump.

[0013] Preferably, the outer surface of the silver smelting induction furnace and the outer surface of the vacuum pump are both provided with a water cooling jacket, the liquid inlet of the water cooling jacket and the air cooler are respectively connected to the circulating water pump, and the liquid outlet of the water cooling jacket and the air cooler are respectively connected to the water inlet of the cooling tower.

[0014] Beneficial effects of the present invention:

[0015] The oxygen production device of the present invention produces oxygen by using a liquid silver dissolving and releasing oxygen method, that is, using the characteristics of liquid Ag selectively dissolving and releasing oxygen in the air to separate and extract oxygen from the air, the produced oxygen has high purity, and almost no Ag loss in the oxygen production process. The cyclic oxygen dissolving and deoxidation process is realized by an electromagnetic stirring device and a vacuum-ultrasonic deoxidation device, and the oxygen production efficiency is high. During the oxygen production process, the silver induction melting furnace stabilizes the oxygen production temperature near the melting point of silver (970°C), thereby achieving the purpose of green and efficient oxygen production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 : A stereogram of the present invention;

[0018] Figure 2 : Flowchart of the present invention;

[0019] Figure 3 : A partial stereogram of the present invention;

[0020] Figure 4 : A three-dimensional diagram of the silver smelting induction furnace of the present invention;

[0021] Figure 5 : Partial structure diagram of the silver smelting induction furnace of the present invention.

[0022] The reference numerals are as follows:

[0023] 1. Silver smelting induction furnace; 11. Oxygen dissolving chamber; 12. Deoxidation chamber; 13. Opening; 14. Electromagnetic induction coil; 2. Electromagnetic pump; 3. Ultrasonic vacuum deoxidation device; 31. Ultrasonic signal generator; 32. Transducer; 4. Cooling tower; 5. Compensating water tank; 6. Air cooler; 7. Vacuum pump; 8. Oxygen storage tank; 9. Water cooling jacket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example:

[0026] like Figure 1-Figure 5As shown, the oxygen production device based on the silver dissolved oxygen mechanism includes a silver smelting and dissolving oxygen system, an ultrasonic vacuum deoxidation device 3, a vacuum suction system, a cooling system, an electromagnetic stirring system and an oxygen storage tank 8;

[0027] The silver smelting oxygen dissolving and releasing system comprises a silver smelting induction furnace 1, wherein the interior of the silver smelting induction furnace 1 is divided into an oxygen dissolving chamber 11 and a deoxidation chamber 12, wherein the oxygen dissolving chamber 11 and the deoxidation chamber 12 are connected via an opening 13, wherein the entrance of the oxygen dissolving chamber 11 is open for full contact with the air environment, and the top of the deoxidation chamber 12 is sealed and connected to a vacuum suction system so that the interior of the deoxidation chamber 12 is in a negative pressure state; the ultrasonic vacuum deoxidation device 3 comprises an ultrasonic signal generator 31, a transducer 32 and an ultrasonic horn, wherein the ultrasonic signal generator 31 and the transducer 32 are located at the top of the deoxidation chamber 12, and the ultrasonic horn extends to the interior of the deoxidation chamber 12. The vacuum suction system includes an air cooler 6 and a vacuum pump 7. The air inlet end of the air cooler 6 is connected to the deoxidation chamber 12 through an exhaust pipe, the exhaust end of the air cooler 6 is connected to the vacuum pump 7, and the other end of the vacuum pump 7 is connected to the oxygen storage tank 8, which is used to collect the desorbed and cooled oxygen into the oxygen storage tank 8; the cooling system includes a cooling tower 4, a circulating water pump and a compensating water tank 5, which are used to cool the silver smelting induction furnace 1, the air cooler 6 and the vacuum pump 7.

[0028] The shell of the silver smelting induction furnace 1 is a double-layer structure, and an electromagnetic induction coil 14 for heating is arranged between the double-layer structure. The double-layer structure includes a furnace lining and a furnace shell. The furnace lining is a double-chamber graphite crucible. The interior of the furnace lining is provided with an electromagnetic induction coil 14 which is a multi-turn coil spirally wound on the outer surface of the furnace lining (such as Figure 4 As shown), the temperature in the crucible can be kept uniform at all times. The graphite crucible has a good induction heating melting effect. The electromagnetic induction coil 14 is a thick-walled copper tube, which is wound on a special mold without a joint in the middle. The two ends are made of pure copper xenon arc welding. The copper tube is made of T2 copper. There should be no weld inside each set of induction coils. The induction coil is fixed by several series of bolts and insulating stays welded on its outer circumference. Water can flow through the tube, which is convenient for connecting to the cooling system for cooling.

[0029] The electromagnetic stirring system is composed of an electromagnetic pump 2 , one end of which extends into the oxygen dissolving chamber 11 , and utilizes the generated electromagnetic force to push the liquid silver to move regularly from the oxygen dissolving chamber 11 to the deoxidation chamber 12 .

[0030] The water inlet of the cooling tower 4 is connected to the device to be cooled, and the water outlet is connected to the compensation water tank 5. The circulating water pump is connected to the compensation water tank 5 and delivers the cold water flow to the device to be cooled to realize water recycling. The device to be cooled is the silver smelting induction furnace 1, the air cooler 6 and the vacuum pump 7. The outer surface of the silver smelting induction furnace 1 and the outer surface of the vacuum pump 7 are both provided with a water cooling jacket 9. The liquid inlets of the water cooling jacket 9 and the air cooler 6 are respectively connected to the circulating water pump. The liquid outlets of the water cooling jacket 9 and the air cooler 6 are respectively connected to the water inlet of the cooling tower 4. The circulating water pump can extract the cold water in the compensation water tank 5 and deliver it to the silver smelting induction furnace 1, the vacuum pump 7 and the air cooler 6 for cooling. The water that absorbs heat will be delivered to the inside of the cooling tower 4 under the delivery action of the circulating water pump. The hot water is cooled by the cooling tower 4. The cooled water enters the compensation water tank 5 again to replenish the water in the compensation water tank, thereby ensuring that the device to be cooled can work at a stable temperature.

[0031] The specific oxygen production process is:

[0032] 1. In the silver smelting oxygen dissolving and releasing system, the silver powder is heated and melted into liquid silver by the silver smelting induction furnace 1 (the best oxygen production temperature is near the melting point of silver, 970°C). At this time, the oxygen in the atmospheric environment is dissolved in the liquid silver in large quantities from the air inlet end of the oxygen dissolving chamber 11;

[0033] 2. Start the electromagnetic pump 2, and the electromagnetic force generated stirs the liquid silver with dissolved oxygen, pushing it to move regularly from the oxygen dissolving chamber 11 to the deoxidation chamber 12, and circulates back and forth, so that on the one hand, the liquid silver in the silver smelting oxygen dissolving and releasing system is fully mixed and evenly mixed, and on the other hand, the oxygen dissolving and releasing efficiency of the liquid silver is improved.

[0034] 3. When the liquid silver is in a circulating flow state, the vacuum pump 7 in the vacuum suction system is started to evacuate the deoxidation chamber 12 to make the interior of the chamber in a negative pressure state;

[0035] 4. Simultaneously start the ultrasonic vacuum deoxidation device 3. Under the combined action of vacuum and ultrasound, a part of the dissolved oxygen in the liquid silver diffuses to the surface and precipitates; the other part diffuses into the cavitation bubbles. When the cavitation bubbles grow to a certain extent, the cavitation bubbles float to the surface and release oxygen, thereby achieving efficient deoxidation.

[0036] 5. The high-temperature oxygen in the deoxygenation chamber 12 enters the air cooler 6 through the exhaust pipe for heat exchange and cooling. The cooled oxygen flows into the oxygen storage tank 8 through the vacuum pump 7 for collection and storage.

[0037] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An oxygen production device based on the silver dissolved oxygen mechanism, characterized in that: It comprises a silver smelting oxygen dissolving and releasing system, an ultrasonic vacuum deoxidation device (3), a vacuum suction system, a cooling system, an electromagnetic stirring system and an oxygen storage tank (8); The silver smelting oxygen dissolving and releasing system comprises a silver smelting induction furnace (1), wherein the interior of the silver smelting induction furnace (1) is divided into an oxygen dissolving chamber (11) and a deoxidation chamber (12), wherein the oxygen dissolving chamber (11) and the deoxidation chamber (12) are connected via an opening (13), wherein the entrance of the oxygen dissolving chamber (11) is open for full contact with the air environment, and the top end of the deoxidation chamber (12) is sealed and connected to a vacuum suction system, so that the interior of the deoxidation chamber (12) is in a negative pressure state; The ultrasonic vacuum deoxygenation device (3) comprises an ultrasonic signal generator (31), a transducer (32) and an ultrasonic horn, wherein the ultrasonic signal generator (31) and the transducer (32) are located at the top of the deoxygenation chamber (12), and the ultrasonic horn extends into the interior of the deoxygenation chamber (12); The vacuum suction system comprises an air cooler (6) and a vacuum pump (7), wherein the air inlet end of the air cooler (6) is connected to the deoxygenation chamber (12) via an exhaust pipe, the exhaust end of the air cooler (6) is connected to the vacuum pump (7), and the other end of the vacuum pump (7) is connected to an oxygen storage tank (8) for collecting the deoxygenated and cooled oxygen into the oxygen storage tank (8); The cooling system comprises a cooling tower (4), a circulating water pump and a compensating water tank (5), and is used to cool the silver smelting induction furnace (1), an air cooler (6) and a vacuum pump (7).

2. The oxygen production device based on the silver dissolved oxygen mechanism according to claim 1, characterized in that: The shell of the silver smelting induction furnace (1) is a double-layer structure, comprising a furnace shell and a furnace lining, and an electromagnetic induction coil (14) for heating is arranged between the double-layer structure.

3. The oxygen production device based on the silver dissolved oxygen mechanism according to claim 1 is characterized in that: The electromagnetic stirring system is composed of an electromagnetic pump (2), one end of which extends into the oxygen dissolving chamber (11), and utilizes the generated electromagnetic force to push the liquid silver to move regularly from the oxygen dissolving chamber (11) to the deoxidation chamber (12).

4. The oxygen production device based on the silver dissolved oxygen mechanism according to claim 1 is characterized in that: The water inlet of the cooling tower (4) is connected to the device to be cooled, and the water outlet is connected to the compensation water tank (5). The circulating water pump is connected to the compensation water tank (5) and transports the cold water flow to the device to be cooled, thereby realizing water recycling. The device to be cooled is a silver smelting induction furnace (1), an air cooler (6) and a vacuum pump (7).

5. The oxygen production device based on the silver dissolved oxygen mechanism according to claim 4 is characterized in that: The outer surface of the silver smelting induction furnace (1) and the outer surface of the vacuum pump (7) are both provided with a water cooling jacket (9), the liquid inlet of the water cooling jacket (9) and the air cooler (6) are respectively connected to the circulating water pump, and the liquid outlet of the water cooling jacket (9) and the air cooler (6) are respectively connected to the water inlet of the cooling tower (4).

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