A high pressure gas transfer filling and purification device

Abstract

The utility model relates to high pressure gas transfer filling and purification technical field, and disclose a kind of high pressure gas transfer filling and purification device, including including raw material tube bundle container, raw material gas pipeline, low-pressure buffer tank, medium-pressure compressor, purifier, medium-pressure buffer tank, high-pressure compressor, filling frame, product gas tube bundle container, product gas steel bottle group, regeneration buffer product gas bottle group, the raw material tube bundle container raw material is transferred to product gas tube bundle container by two medium-pressure compressors in compressor, it is equipped with purifier between medium-pressure compressor, high-pressure compressor, gas in raw material tube bundle container is sent to product gas tube bundle container or product gas steel bottle group after being purified. The high pressure gas transfer filling and purification device, when raw material gas tube bundle container pressure is higher than the minimum working pressure of purifier and the pressure of high-pressure product gas tube bundle container, can realize power-free purification and transfer filling of product gas, save about 40-50% energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure gas transfer, filling and purification technology, specifically a high-pressure gas transfer, filling and purification device. Background Technology

[0002] Neon and helium are widely used in scientific research, semiconductor manufacturing, medicine, and high-tech industries, especially with the rapid development of these sectors. The demand for these rare gases is increasing dramatically. Neon and helium are non-renewable and non-replaceable, making them crucial elements in high-tech manufacturing.

[0003] Currently, almost all helium used in China comes from the United States, the Middle East, or Australia. Only a small amount of helium is obtained by recovering and purifying boil-off gas (BOG) produced by liquefied natural gas plants. In addition, neon is mainly obtained by concentrating, purifying, and distilling non-condensable gases produced by air separation equipment.

[0004] Helium and neon are primarily transported in tubular containers, with a small amount stored and transported in steel cylinder containers and high-pressure steel cylinders. During the production and filling process, helium and neon can be contaminated by packaging materials or improper handling of connecting pipelines. Due to the scarcity of helium and neon resources, venting contaminated high-pressure gases such as neon and helium would severely waste resources, and returning them to the factory for reprocessing would reduce the production capacity of the existing equipment. Utility Model Content

[0005] The purpose of this invention is to provide a high-pressure gas transfer, filling, and purification device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure gas transfer, filling, and purification device, comprising a raw material tube bundle container, a raw material gas pipeline, a low-pressure buffer tank, a medium-pressure compressor, a purifier, a medium-pressure buffer tank, a high-pressure compressor, a filling rack, a product gas tube bundle container, a product gas cylinder group, and a product gas cylinder group for regeneration buffer. The raw material in the raw material tube bundle container is transferred to the product gas tube bundle container and then pressurized a second time by two compressors, a medium-pressure compressor and a high-pressure compressor. A purifier is provided between the medium-pressure compressor and the high-pressure compressor to purify the gas in the raw material tube bundle container and then deliver it to the product gas tube bundle container or the product gas cylinder group. The medium-pressure compressor and the purifier are fixedly connected to the input pipeline of the high-pressure compressor.

[0007] The output pipe of the raw material tube bundle container D01 is fixedly connected to the low-pressure buffer tank D03 and the input pipe of the medium-pressure compressor C01. The output pipe of the medium-pressure compressor C01 is fixedly connected to the input pipe of the purifier P01. The inlet of the purifier P01 has a pressure reducing valve V03. The output pipe is connected to the back pressure valve V04 to ensure the stability of the working pressure of the purifier. The back pressure valve V04 is fixedly connected to the input pipe of the medium-pressure buffer tank D04 and the high-pressure compressor C02. The output pipe of the high-pressure compressor C02 is connected to the product gas tube bundle container D02.

[0008] The device specifically includes the following steps:

[0009] Step 1: When the high-pressure gas pressure in the raw material tube bundle container is higher than the working pressure of the purifier: shut-off valve 3 is closed, pressure reducing valve 1 is closed, and the raw material gas enters through the pipeline and shut-off valve 5 and is depressurized to slightly higher than the working pressure of the purifier through the connected pressure reducing valve 2. The raw material gas then enters the pressure reducing valve 3 before the purifier through the pipeline.

[0010] Step two: The raw material gas, after its pressure is adjusted to the required pressure by pressure reducing valve three, enters the purifier. In the purifier, the raw material gas is purified by an adsorbent to remove trace impurities such as oxygen, nitrogen, argon, carbon monoxide, and moisture. A back pressure valve stabilizes the purifier's operating pressure. The purified gas then flows through a pipeline into a medium-pressure buffer tank. When the pressure in the product gas bundle container is lower than the purified product gas pressure, the product gas flows through shut-off valves one and two into the filling rack and then into the product gas bundle container. When the container pressure reaches the purifier's pressure, shut-off valves one and two are closed, shut-off valve four is opened, and the high-pressure compressor is started. The product gas, after being compressed by the high-pressure compressor, flows through pipelines and shut-off valve four into the filling rack and then into the product gas bundle container for filling.

[0011] Step 3: When the high-pressure gas pressure in the raw material tube bundle container is lower than the working pressure of the purifier: open pressure reducing valve 1, close shut-off valve 5 and pressure reducing valve 2, and start the medium-pressure compressor. The raw material gas passes through the pipeline, pressure reducing valve 1, and enters the buffer tank through the pipeline. After entering the medium-pressure compressor, it is pressurized to the pressure required by the purifier. Then, the process of step 2 is repeated for purification and filling.

[0012] When the pressure of the product gas bundle container D02 is lower than the pressure of the raw material bundle container D01 and the working pressure of the purifier P01, the back pressure valve V04 at the outlet of the purifier P01 is connected to the inlet of the medium-pressure buffer tank D04, and the outlet of the medium-pressure buffer tank D04 is connected to the shut-off valve V05, the shut-off valve V06 and the filling rack F01. The filling rack F01 is connected to the product gas bundle container D02. At this time, the high-pressure compressor CO2 does not need to work, thus saving energy.

[0013] Step four: The raw material enters two sets of interchangeable 13X or 4A molecular sieve adsorbers for drying to remove moisture from the raw gas. The moisture-free raw gas then enters a cryogenic adsorber cooled to approximately -190°C by liquid nitrogen. Non-polar macromolecular nitrogen, oxygen, and argon condense in the pores of fine-pored silica gel under moderate pressure due to van der Waals forces. The remaining nitrogen, oxygen, and argon impurities are adsorbed by the fine-pored silica gel adsorbent, while small-molecule neon and helium permeate through the silica gel adsorbent. For helium containing neon impurities in the raw material tubular container, after removing nitrogen, oxygen, and argon impurities, it enters an activated carbon adsorbent. Utilizing the large specific surface area and selective pore size adsorption of activated carbon (neon atom diameter: 3.2 Å, helium atom diameter: 2.44 Å), neon impurities are removed from the helium. The purified gas, after impurity removal, exchanges heat with the raw gas to return to room temperature before exiting the purifier.

[0014] The purifier exhibits improved adsorption capacity at low temperatures (< -100℃) as the temperature decreases. Experiments show extremely high adsorption performance around -190℃ in the liquid nitrogen temperature range. Adsorption capacity also increases with increasing adsorption pressure. Tests have demonstrated that at higher pressures (3-10 MPa), adsorption achieves a higher saturation partial pressure. Therefore, the same volume of adsorbent can adsorb more impurity gases, reducing the amount of raw material gas emitted during adsorption saturation regeneration and improving economic efficiency.

[0015] Once the adsorber is saturated with impurities, it automatically switches to a different mode based on time. The adsorber is regenerated using dry nitrogen from the pipeline network.

[0016] When the purifier has been running for a period of time, and the impurity levels at the purifier outlet gradually rise to the design limit, the adsorbent reaches saturation. At this point, regeneration is required. The regeneration method involves reducing pressure and restoring the temperature to room temperature, thus decreasing the adsorption capacity of the adsorbent and causing the adsorbed impurity gas to overflow from the micropores of the adsorbent. The adsorbent is then replaced with purified product gas. The regeneration steps are as follows: close pressure reducing valve three and the back pressure valve; open the regeneration gas inlet valve and shut-off valves six and seven; use room temperature regeneration purging nitrogen to enter the purifier and discharge it from the regeneration vent; heat the adsorbent to above 0°C and then regenerate the purifier. After regeneration, use purified high-pressure gas from the regeneration buffer product gas cylinder group, reduced by pressure reducing valve four, to replace the purifier. After successful replacement, the purifier can be reused.

[0017] Compared with the prior art, this utility model provides a high-pressure gas transfer, filling and purification device, which has the following beneficial effects:

[0018] This high-pressure gas transfer, filling, and purification device can achieve purification and transfer of product gas without power when the pressure of the raw material gas tubular container is higher than the minimum working pressure of the purifier and the pressure of the high-pressure product gas tubular container, saving approximately 40-50% of energy consumption.

[0019] This high-pressure gas transfer, filling, and purification device employs a two-stage compression method. The higher purification working pressure improves the purifier's processing capacity, reduces the amount of adsorbent used, decreases the size of the purifier, and enhances the device's safety. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 the overall structure and process.

[0022] In the diagram: D01, Raw material gas tubing container; D02, Product gas tubing container; D03, Low-pressure buffer tank; D04, Medium-pressure buffer tank; D05, Product gas cylinder group for regeneration buffer; D06, Product gas cylinder group; C01, Medium-pressure compressor; C02, High-pressure compressor; P01, Purifier; F01, Filling rack; V01, Pressure reducing valve 1; V02, Pressure reducing valve 2; V03, Pressure reducing valve 3; V10, Pressure reducing valve 4; V04, Back pressure valve; V05, Shut-off valve 1; V06, Shut-off valve 2; V07, Shut-off valve 3; V08, Shut-off valve 4; V09, Shut-off valve 5; V11, Shut-off valve 6; V12, Shut-off valve 7; 101, Raw material gas pipeline 3; 102, Raw material gas pipeline 1; 103, Raw material gas pipeline 2; 104, ... 105. Medium-pressure feed gas; 106. Reduced-pressure and stabilized feed gas; 107. Purified medium-pressure product gas; 118. Purified high-pressure product gas one; 119. Purified high-pressure product gas two; 100. Unpurified feed gas; 101. Unpressurized product gas; 112. Product gas going to the product tubing container; 113. Product gas going to the product cylinder; 114. Product gas going to the buffer container; 115. Product gas going to purification, regeneration, and replacement. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] This utility model provides the following technical solution:

[0026] Combination Figure 1 A high-pressure gas transfer, filling, and purification device includes a raw material tube bundle container D01, a raw material gas pipeline 101, a low-pressure buffer tank D03, a medium-pressure compressor C01, a purifier P01, a medium-pressure buffer tank D04, a high-pressure compressor C02, a filling rack F01, a product gas tube bundle container D02, a product gas cylinder group D06, and a product gas cylinder group D05 for regeneration buffer. The raw material in the raw material tube bundle container D01 is transferred to the product gas tube bundle container D02 and then pressurized again by two compressors, the medium-pressure compressor C01 and the high-pressure compressor C02. A purifier P01 is installed between the medium-pressure compressor C01 and the high-pressure compressor C02 to purify the gas in the raw material tube bundle container before delivering it to the product gas tube bundle container D02 or the product gas cylinder group D06. The medium-pressure compressor C01, the purifier P01, and the input pipeline of the high-pressure compressor C02 are fixedly connected.

[0027] A high-pressure gas transfer, filling, and purification apparatus, comprising the following steps:

[0028] Step 1: When the high-pressure gas pressure in the raw material tube bundle container D01 is higher than 10MPa: shut-off valve 3V07 is closed, pressure reducing valve 1V01 is closed, the raw material gas flow rate is 20NM3 / h, 20MPa, and it enters through pipeline 102 and shut-off valve 5V019, and is reduced to 9.6MPa by the connected pressure reducing valve 2V02. The raw material gas then enters the pressure reducing valve 3V03 before purifier P01 through pipeline 103.

[0029] Step two: After the raw material gas is pressurized to 9.5 MPa by pressure reducing valve three (V03), it enters purifier P01. In purifier P01, the raw material gas is purified by an adsorbent to remove trace impurities such as oxygen, nitrogen, argon, carbon monoxide, and moisture. The purified gas pressure is 9.45 MPa. A back pressure valve (V04) stabilizes the purifier's operating pressure at 9.45 MPa. The purified gas then enters the medium-pressure buffer tank D04 via pipeline 106. When the pressure in the product gas tubing container D02 is below 9.1 MPa, product gas 106 enters the product gas tubing container D02 via shut-off valve one (V05) and shut-off valve two (V06) through filling rack F01. When the pressure in container D02 reaches 9.1MPa, shut-off valves V05 and V06 are closed, shut-off valve V08 is opened, and high-pressure compressor C02 is started. Product gas 106 enters high-pressure compressor C02y, is compressed, and then enters filling rack F01 through pipeline 107 and valve V08, and then enters product gas tubing container D02 to fill product gas.

[0030] Step 3: When the high-pressure gas pressure in the raw material tube bundle container D01 is lower than 10MPa: open pressure reducing valve 1 V01, close shut-off valve 5 V019 and pressure reducing valve 2 V02, and start medium-pressure compressor C01. The raw material gas pipeline 3 101, pressure reducing valve 1 V01, and pipeline 104 enter the buffer tank D03 and then enter the medium-pressure compressor C01 to be pressurized to 9.6MPa. Then repeat the process of step 2 for purification and filling.

[0031] Step four: The raw material enters two sets of interchangeable 13X or 4A molecular sieve adsorbers for drying to remove moisture from the raw gas. The moisture-free raw gas then enters a cryogenic adsorber cooled to approximately -190°C by liquid nitrogen. Non-polar macromolecular nitrogen, oxygen, and argon condense in the pores of fine-pored silica gel under moderate pressure due to van der Waals forces. The remaining nitrogen, oxygen, and argon impurities are adsorbed by the fine-pored silica gel adsorbent, while small-molecule neon and helium permeate through the silica gel adsorbent. For helium containing neon impurities in the raw material tubular container, after removing nitrogen, oxygen, and argon impurities, it enters an activated carbon adsorbent. Utilizing the large specific surface area and selective pore size adsorption of activated carbon (neon atom diameter: 3.2 Å, helium atom diameter: 2.44 Å), neon impurities are removed from the helium. The purified gas, after impurity removal, exchanges heat with the raw gas to return to room temperature before exiting the purifier.

[0032] The purifier exhibits improved adsorption capacity at low temperatures (< -100℃) as the temperature decreases. Experiments show extremely high adsorption performance around -190℃ in the liquid nitrogen temperature range. Adsorption capacity also increases with increasing adsorption pressure. Tests have demonstrated that at higher pressures, such as 3-10 MPa, adsorption achieves a higher saturation partial pressure. Therefore, the same volume of adsorbent can adsorb more impurity gases, reducing the amount of raw material gas emitted during adsorption saturation regeneration and improving economic efficiency.

[0033] After the adsorber becomes saturated with impurities, it automatically switches to a different mode based on time. The saturated adsorber is regenerated using dry nitrogen from the pipeline network. If the purity of the product after purifier P01 does not meet the specifications, it can be returned to the inlet of purifier P01 for repurification via shut-off valves two (V06) and three (V07).

[0034] When purifier P01 has been running for a period of time, and the impurity levels at the purifier outlet gradually rise to the design limit, the adsorbent reaches saturation. Regeneration is then required. The regeneration method involves reducing pressure and restoring the temperature to room temperature, thus decreasing the adsorption capacity of the adsorbent and causing the adsorbed impurity gas to overflow from the micropores of the adsorbent. The adsorbent is then replaced with purified product gas. The regeneration steps are as follows: close the purifier inlet / outlet valves V03, pressure reducing valve three, and back pressure valve V04; open the regeneration gas inlet valve and shut-off valves V11 and V12; use room temperature regeneration purging nitrogen 115 to enter the purifier and discharge it through the regeneration vent 116; heat the adsorbent to above 0°C and then regenerate the purifier. After regeneration, use purified high-pressure gas from the regeneration buffer product gas cylinder group D05, which is then depressurized via pressure reducing valve V10, to replace the purifier. After successful replacement, purifier P01 can be reused.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A high-pressure gas transfer, filling, and purification device, comprising a raw material tube bundle container (D01), a raw material gas pipeline three (101), a low-pressure buffer tank (D03), a medium-pressure compressor (C01), a purifier (P01), a medium-pressure buffer tank (D04), a high-pressure compressor (C02), a filling rack (F01), a product gas tube bundle container (D02), a product gas cylinder group (D06), and a product gas cylinder group for regeneration buffer (D05), characterized in that: The raw material in the raw material tube bundle container (D01) is transferred to the product gas tube bundle container (D02) and then pressurized again by two compressors, a medium-pressure compressor (C01) and a high-pressure compressor (C02). A purifier (P01) is installed between the medium-pressure compressor (C01) and the high-pressure compressor (C02) to purify the gas in the raw material tube bundle container before delivering it to the product gas tube bundle container (D02) or the product gas cylinder group (D06). The medium-pressure compressor (C01), the purifier (P01) and the input pipeline of the high-pressure compressor (C02) are fixedly connected.

2. A high pressure gas transfer, filling and purification apparatus as claimed in claim 1, characterized in that: The output pipe of the raw material tube bundle container (D01) is fixedly connected to the low-pressure buffer tank (D03) and the input pipe of the medium-pressure compressor (C01). The output pipe of the medium-pressure compressor (C01) is fixedly connected to the input pipe of the purifier (P01). The purifier (P01) has a pressure reducing valve (V03) at its inlet. The output pipe is connected to a back pressure valve (V04) to ensure stable working pressure of the purifier. The back pressure valve (V04) is fixedly connected to the input pipe of the medium-pressure buffer tank (D04) and the high-pressure compressor (C02). The output pipe of the high-pressure compressor (C02) is connected to the product gas tube bundle container (D02).

3. A high pressure gas transfer, filling and purification apparatus as claimed in claim 1, wherein: When the pressure in the raw material tube bundle container (D01) is higher than the working pressure of the purifier, the raw material tube bundle container (D01), the raw material gas pipeline three (101), the connecting pipe (102), and the shut-off valve five (V09) are opened and the shut-off valve three (V07) is closed. The raw material gas enters the pressure reducing valve two (V02) and the pressure reducing valve three (V03) and then enters the purifier (P01). The purifier (P01) has a pressure reducing valve three (V03) at the inlet and the output pipeline is connected to the back pressure valve (V04) to ensure that the working pressure of the purifier is stable. The back pressure valve (V04) is connected to the medium pressure buffer tank (D04) and the input pipeline of the high pressure compressor (C02) in a fixed connection. The output pipeline of the high pressure compressor (C02) is connected to the product gas tube bundle container (D02). At this time, the medium pressure compressor (C01) does not need to work, thus saving energy.

4. A high pressure gas transfer, filling and purification apparatus as defined in claim 1, wherein: When the pressure of the product gas bundle container (D02) is lower than the pressure of the raw material bundle container (D01) and the working pressure of the purifier (P01), the back pressure valve (V04) at the outlet of the purifier (P01) is connected to the inlet of the medium-pressure buffer tank (D04), and the outlet of the medium-pressure buffer tank (D04) is connected to the first shut-off valve (V05), the second shut-off valve (V06), and the filling rack (F01). The filling rack (F01) is connected to the product gas bundle container (D02). At this time, the high-pressure compressor (C02) does not need to work, thus saving energy.

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