Emission gas condensation system

Abstract

The utility model discloses a diffused gas condensing system which comprises a liquid nitrogen output pipeline, an oxygen cooling device and an argon cooling device, and the inlet side of the liquid nitrogen output pipeline is connected with a liquid nitrogen tank; the oxygen cooling device comprises a primary cooler and a secondary cooler; the argon cooling device comprises a first-stage heat exchanger and a second-stage heat exchanger. Based on the principle that the boiling point of liquid nitrogen is lower than that of liquid argon and liquid oxygen, the liquid nitrogen is used for cooling oxygen and argon which have benefits and values through the oxygen cooling device and the argon cooling device, so that emptying loss of interlayer gas is eradicated, liquefied liquid oxygen and liquid argon are recycled, the utilization rate of oxygen and argon is increased, energy consumption is low, and the cost is low. The method has remarkable economic, environment-friendly and safe advantages.

Description

Technical Field

[0001] This utility model relates to the field of gas treatment technology, and in particular to a gas condensation system. Background Technology

[0002] In industrial production, medical fields, and scientific research, cryogenic liquids such as liquid nitrogen, liquid oxygen, and liquid argon are widely used for cooling, protection, and experimental applications. These cryogenic liquids are typically stored in liquid nitrogen tanks, liquid oxygen tanks, and liquid argon tanks.

[0003] To ensure the stability of cryogenic liquids, these tanks typically have a perlite protective layer inside. However, during actual use, the protective gas within this layer gradually vaporizes, forming a gas sandwich. Currently, there are two main methods for dealing with the gas sandwich formed after the protective gas in the perlite protective layer of liquid nitrogen, liquid oxygen, and liquid argon tanks vaporizes:

[0004] The first method is to release the gas into the atmosphere, which is simple and easy, but it will cause waste of resources and environmental pollution.

[0005] The second method is recycling, which involves compressing the interlayer gas with a compressor and then re-injecting it into the tank. While this method can reduce resource waste, it consumes a lot of energy. Summary of the Invention

[0006] To address the aforementioned technical problems, this utility model provides the following solution. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general description, nor is it intended to identify key / important components or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0007] The present invention adopts the following technical solution:

[0008] A gas condensation system is provided, comprising: a liquid nitrogen output pipeline, an oxygen cooling device, and an argon cooling device, wherein the inlet side of the liquid nitrogen output pipeline is connected to a liquid nitrogen tank;

[0009] The oxygen cooling device includes: a primary cooler and a secondary cooler;

[0010] The heat medium inlet of the primary cooler is connected to the liquid oxygen tank, the heat medium outlet of the primary cooler is connected to the heat medium inlet of the secondary cooler, and the refrigerant inlets of both the primary cooler and the secondary cooler are connected to the outlet side of the liquid nitrogen output pipeline.

[0011] The argon gas cooling device includes: a primary heat exchanger and a secondary heat exchanger;

[0012] The heat medium inlet of the first-stage heat exchanger is connected to the liquid argon tank, the heat medium outlet of the first-stage heat exchanger is connected to the heat medium inlet of the second-stage heat exchanger, the refrigerant inlet of the first-stage heat exchanger is connected to the refrigerant outlet of the second-stage cooler, and the refrigerant inlet of the second-stage heat exchanger is connected to the outlet side of the liquid nitrogen output pipeline.

[0013] Furthermore, the aforementioned gas condensation system further includes: a jacketed oxygen output interface and an oxygen delivery pipe, wherein the jacketed oxygen output interface is connected to the protective layer of the liquid oxygen tank, one end of the oxygen delivery pipe is connected to the jacketed oxygen output interface, and the other end is connected to the heat medium inlet of the primary cooling zone.

[0014] Furthermore, the aforementioned gas condensation system further includes: a jacketed oxygen input interface, the jacketed oxygen input interface being connected to the protective layer of the liquid oxygen tank, and the heat medium outlet of the secondary cooler being connected to the jacketed oxygen input interface.

[0015] Furthermore, the aforementioned condensation system for evaporating gas also includes: a jacketed argon gas output interface and an argon gas delivery pipe. The jacketed argon gas output interface is connected to the protective layer of the liquid argon tank. One end of the argon gas delivery pipe is connected to the jacketed argon gas output interface, and the other end is connected to the heat medium inlet of the primary heat exchanger.

[0016] Furthermore, the aforementioned condensation system for evaporating gas also includes: a jacketed argon gas input interface, the jacketed argon gas input interface being connected to the protective layer of the liquid argon tank, and the heat medium outlet of the secondary heat exchanger being connected to the jacketed argon gas input interface.

[0017] Furthermore, the aforementioned condensation system for emitted gas also includes: a jacketed nitrogen output interface, a first nitrogen output pipe, and a nitrogen delivery main pipe; the jacketed nitrogen output interface is connected to the protective layer of the liquid nitrogen tank, the jacketed nitrogen output interface is connected to the nitrogen delivery main pipe through the first nitrogen output pipe, and the nitrogen delivery main pipe is connected to the air separation system.

[0018] Furthermore, the aforementioned gas condensation system further includes: a second nitrogen output pipe and a third nitrogen output pipe; the refrigerant outlet of the primary cooling zone is connected to the nitrogen supply main pipe through the second nitrogen output pipe, and the refrigerant outlets of the primary heat exchanger and the secondary heat exchanger are both connected to the nitrogen supply main pipe through the third nitrogen output pipe.

[0019] The beneficial effects of this utility model are as follows: Based on the principle that the boiling point of liquid nitrogen is lower than that of liquid argon and liquid oxygen, this application utilizes liquid nitrogen to cool valuable oxygen and argon through an oxygen cooling device and an argon cooling device, thereby eliminating the loss of gas in the interlayer and recycling the liquefied liquid oxygen and liquid argon, improving the utilization rate of oxygen and argon, and having low energy consumption, with significant economic, environmental and safety advantages. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a gas condensation system according to the present invention. Detailed Implementation

[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] The protective gas inside the perlite protective layer of liquid nitrogen tank 100 is liquid nitrogen, and the interlayer gas formed after the liquid nitrogen protective gas vaporizes is nitrogen. The protective gas inside the perlite protective layer of liquid oxygen tank 200 is liquid oxygen, and the interlayer gas formed after the liquid oxygen protective gas vaporizes is oxygen. The protective gas inside the perlite protective layer of liquid argon tank 300 is liquid argon, and the interlayer gas formed after the liquid argon protective gas vaporizes is argon.

[0024] The purpose of this application is to utilize the liquid nitrogen stored in the liquid nitrogen tank 100 to draw out and cool the jacket gas of the liquid oxygen tank 200 and the liquid argon tank 300 respectively through the oxygen cooling device and the argon cooling device, so as to form liquid oxygen and liquid argon, and then transport them back into the protective layer of the liquid oxygen tank 200 and the liquid argon tank 300, so as to achieve recycling and avoid resource waste.

[0025] like Figure 1As shown, this application provides a gas condensation system, including: a liquid nitrogen tank 100, a liquid oxygen tank 200, a liquid argon tank 300, an oxygen cooling device, an argon cooling device, a liquid nitrogen output pipeline 110, a double-layered nitrogen output interface 120, an oxygen delivery pipe 210, a double-layered oxygen output interface 220, a double-layered oxygen input interface 230, an argon delivery pipe 310, a double-layered argon output interface 320, and a double-layered argon input interface 330.

[0026] The oxygen cooling system includes a primary cooler 400 and a secondary cooler 500.

[0027] The argon cooling device includes a primary heat exchanger 600 and a secondary heat exchanger 700.

[0028] Liquid nitrogen tank 100 provides a cooling medium for oxygen cooling device and argon cooling device, that is, it uses liquid nitrogen to cool the jacket gas. The inlet side of liquid nitrogen output pipeline 110 is connected to liquid nitrogen tank 300, and the outlet side of liquid nitrogen output pipeline 110 has three outlets, which are respectively connected to primary cooler 400, secondary cooler 500 and secondary heat exchanger 700.

[0029] The heat transfer medium inlet of the primary cooler 400 is connected to the liquid oxygen tank 200. Specifically, the jacketed oxygen outlet 220 is connected to the protective layer of the liquid oxygen tank 200, one end of the oxygen delivery pipe 210 is connected to the jacketed oxygen outlet 220, and the other end is connected to the heat transfer medium inlet of the primary cooler 400. This allows the jacketed gas in the protective layer of the liquid oxygen tank 200 to be drawn out through the jacketed oxygen outlet 220 and then transported to the primary cooler 400 for preliminary cooling via the oxygen delivery pipe 210.

[0030] The heat medium outlet of the primary cooler 400 is connected to the heat medium inlet of the secondary cooler 500, so that the jacket gas, after initial cooling in the primary cooler 400, enters the secondary cooler 500 for secondary cooling. The refrigerant inlets of both the primary and secondary coolers 400 are connected to the outlet side of the liquid nitrogen output pipeline 110. Both the primary and secondary coolers 400 use liquid nitrogen from the liquid nitrogen tank 100 as the cooling medium, sequentially exchanging heat with the jacket gas discharged from the liquid oxygen tank 200 to cool it to its liquefaction temperature.

[0031] The interlayer oxygen inlet 230 is connected to the protective layer of the liquid oxygen tank 200, and the heat medium outlet of the secondary cooler 500 is connected to the interlayer oxygen inlet 230. The interlayer gas is cooled sequentially by the primary cooler 400 and the secondary cooler 500 to form liquid oxygen, which is then transported back to the protective layer of the liquid oxygen tank 200 through the interlayer oxygen inlet 230, thus achieving recycling.

[0032] The heat medium inlet of the primary heat exchanger 600 is connected to the liquid argon tank 300. Specifically, the jacketed argon gas outlet 320 is connected to the protective layer of the liquid argon tank 300, one end of the argon gas delivery pipe 310 is connected to the jacketed argon gas outlet 320, and the other end is connected to the heat medium inlet of the primary heat exchanger 600. This allows the jacketed gas in the protective layer of the liquid argon tank 300 to be drawn out through the jacketed argon gas outlet 320 and then delivered to the primary heat exchanger 600 for preliminary cooling via the argon gas delivery pipe 310.

[0033] The heat medium outlet of the primary heat exchanger 600 is connected to the heat medium inlet of the secondary heat exchanger 700, so that the jacket gas, after initial cooling in the primary heat exchanger 600, enters the secondary heat exchanger 700 for secondary cooling. The refrigerant inlet of the primary heat exchanger 600 is connected to the refrigerant outlet of the secondary cooler 500, so that the cooling medium used in the secondary cooler 500 is reintroduced into the primary heat exchanger 600 to provide initial cooling for the jacket gas discharged from the liquid argon tank 300. The refrigerant inlet of the secondary heat exchanger 700 is connected to the outlet side of the liquid nitrogen output pipeline 110. The secondary heat exchanger 700 uses liquid nitrogen from the liquid nitrogen tank 100 as the cooling medium to exchange heat with the jacket gas, achieving secondary cooling to the liquefaction temperature.

[0034] The argon gas inlet 330 is connected to the protective layer of the liquid argon tank 300, and the heat medium outlet of the secondary heat exchanger 700 is connected to the argon gas inlet 330. The interlayer gas is cooled sequentially through the primary heat exchanger 600 and the secondary heat exchanger 700 to form liquid argon, which is then transported back to the protective layer of the liquid argon tank 300 through the argon gas inlet 330, thus achieving recycling.

[0035] The present application provides a gas condensation system, which further includes: a jacketed nitrogen output interface 120, a first nitrogen output pipe 1, a second nitrogen output pipe 2, a third nitrogen output pipe 3, and a nitrogen delivery main pipe 4.

[0036] The interlayer nitrogen output port 120 is connected to the protective layer of the liquid nitrogen tank 100. The interlayer nitrogen output port 120 is connected to the gas nitrogen delivery main pipe 4 through the first gas nitrogen output pipe 1, so that the interlayer gas in the protective layer of the liquid nitrogen tank 100 is led out from the interlayer nitrogen output port 120 and sequentially delivered to the air separation system through the first gas nitrogen output pipe 1 and the gas nitrogen delivery main pipe 4.

[0037] The refrigerant outlet of the primary chiller 400 is connected to the gas and nitrogen delivery main 4 via the second gas and nitrogen output pipe 2. Liquid nitrogen enters the primary chiller 400 as a cooling medium, exchanges heat with the jacket gas, and vaporizes after absorbing a certain amount of heat. The nitrogen gas formed by vaporization is then transported to the air separation system via the second gas and nitrogen output pipe 2 and the gas and nitrogen delivery main 4.

[0038] The refrigerant outlets of both the primary heat exchanger 600 and the secondary heat exchanger 700 are connected to the third nitrogen outlet pipe 3 and the nitrogen supply main pipe 4. Liquid nitrogen, as the cooling medium, enters the secondary heat exchanger 700, exchanges heat with the jacket gas, and vaporizes after absorbing a certain amount of heat. The resulting nitrogen gas is then transported to the air separation system via the third nitrogen outlet pipe 3 and the nitrogen supply main pipe 4. The cooling medium output from the secondary cooler 500 re-enters the primary heat exchanger 600, exchanges heat with the jacket gas, and vaporizes after absorbing a certain amount of heat. The resulting nitrogen gas is then transported to the air separation system via the third nitrogen outlet pipe 3 and the nitrogen supply main pipe 4.

[0039] The gas nitrogen delivery main 4 is connected to the air separation system.

[0040] Utilizing the principle that liquid nitrogen has a lower boiling point than liquid argon and liquid oxygen, this invention achieves efficient cooling and liquefaction of oxygen through a primary cooler 400 and a secondary cooler 500, and efficient cooling and liquefaction of argon through a primary heat exchanger 600 and a secondary heat exchanger 700. This allows for the cooling and recycling of valuable oxygen and argon, and the cooling process can be completed without additional energy consumption, resulting in low cost. Furthermore, the structural design of this application ensures full utilization of liquid nitrogen. After heat exchange in the secondary cooler 500, the liquid nitrogen enters the primary heat exchanger 600 for further utilization of its cooling energy, guaranteeing high utilization of liquid nitrogen and achieving high-efficiency heat exchange.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A gas condensation system, characterized in that, include: The liquid nitrogen output pipeline, the oxygen cooling device, and the argon cooling device are provided, with the inlet side of the liquid nitrogen output pipeline connected to the liquid nitrogen tank. The oxygen cooling device includes: a primary cooler and a secondary cooler; The heat medium inlet of the primary cooler is connected to the liquid oxygen tank, the heat medium outlet of the primary cooler is connected to the heat medium inlet of the secondary cooler, and the refrigerant inlets of both the primary cooler and the secondary cooler are connected to the outlet side of the liquid nitrogen output pipeline. The argon gas cooling device includes: a primary heat exchanger and a secondary heat exchanger; The heat medium inlet of the first-stage heat exchanger is connected to the liquid argon tank, the heat medium outlet of the first-stage heat exchanger is connected to the heat medium inlet of the second-stage heat exchanger, the refrigerant inlet of the first-stage heat exchanger is connected to the refrigerant outlet of the second-stage cooler, and the refrigerant inlet of the second-stage heat exchanger is connected to the outlet side of the liquid nitrogen output pipeline.

2. The condensation system for emitted gas according to claim 1, characterized in that, Also includes: The jacketed oxygen output interface and the oxygen delivery pipe are provided. The jacketed oxygen output interface is connected to the protective layer of the liquid oxygen tank. One end of the oxygen delivery pipe is connected to the jacketed oxygen output interface, and the other end is connected to the heat medium inlet of the primary refrigeration unit.

3. The condensation system for emitted gas according to claim 2, characterized in that, Also includes: A jacketed oxygen inlet is provided, which is connected to the protective layer of the liquid oxygen tank. The heat medium outlet of the secondary cooler is connected to the jacketed oxygen inlet.

4. The condensation system for emitted gas according to claim 3, characterized in that, Also includes: The equipment includes a jacketed argon gas output port and an argon gas delivery pipe. The jacketed argon gas output port is connected to the protective layer of the liquid argon tank. One end of the argon gas delivery pipe is connected to the jacketed argon gas output port, and the other end is connected to the heat medium inlet of the primary heat exchanger.

5. A gas condensation system according to claim 4, characterized in that, Also includes: A double-layered argon gas input interface is provided, which is connected to the protective layer of the liquid argon tank. The heat medium outlet of the secondary heat exchanger is connected to the double-layered argon gas input interface.

6. A gas condensation system according to claim 5, characterized in that, Also includes: The interlayer nitrogen output interface, the first nitrogen output pipe, and the main nitrogen delivery pipe; The interlayer nitrogen output port is connected to the protective layer of the liquid nitrogen tank. The interlayer nitrogen output port is connected to the gas nitrogen delivery main pipe through the first gas nitrogen output pipe. The gas nitrogen delivery main pipe is connected to the air separation system.

7. A gas condensation system according to claim 6, characterized in that, Also includes: The second and third gas nitrogen output pipes; The refrigerant outlet of the first-stage cooling unit is connected to the gas and nitrogen supply main pipe through the second gas and nitrogen output pipe, and the refrigerant outlets of the first-stage heat exchanger and the second-stage heat exchanger are both connected to the gas and nitrogen supply main pipe through the third gas and nitrogen output pipe.

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