Drying skid and argon recovery system
By installing a zero-gas-consumption drainer and drying components inside the drying skid, combined with a cooler and a gas-liquid separator, the problem of argon gas loss during drainage is solved, achieving efficient argon gas recovery and purity improvement, and ensuring equipment safety and heat exchange efficiency.
Patent Information
- Application Number
- CN202520556259.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-27
AI Technical Summary
The existing drying skids cause argon gas to be discharged during the drainage process, which affects the argon gas purification rate and purity. In addition, there are problems such as equipment corrosion and water accumulation affecting heat exchange efficiency.
A zero-gas-consumption drainer is installed inside the drying skid. Combined with the first cooler and the gas-water separator, the zero-gas-consumption drainer discharges moisture in a timely manner, preventing the raw material gas from being discharged simultaneously. The raw material gas is dried and cooled by the drying components and cooler. A switching valve is used to regulate the state of the drying tower to achieve continuous drying.
This increases the recovery rate of argon, avoids the loss of raw material gas, ensures the safety and heat exchange efficiency of the equipment, and improves the purity and recovery rate of argon.
Smart Images
Figure CN223939222U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gas recovery, and in particular to a drying skid and an argon recovery system. Background Technology
[0002] During argon recovery, moisture may be introduced, potentially causing pipe corrosion, equipment blockage, and affecting the purity of the argon. Adsorbents in the drying skid, such as molecular sieves and silica gel, utilize their porous structure and adsorption properties to physically adsorb moisture from the argon, reducing the moisture content to extremely low levels, typically down to the ppm level or even lower. This ensures the dryness and purity of the recovered argon, meeting the stringent requirements of subsequent production processes.
[0003] However, in the process of purifying waste argon gas into high-purity argon gas that meets the requirements for crystal pulling, the existing drying skid requires the argon gas to pass through a cooler and a gas-water separator. In this structure, some gas is discharged along with the condensate contained in the exhaust gas, resulting in a low gas purification rate. Utility Model Content
[0004] Based on this, a drying skid and an argon recovery system are provided to improve the problem of argon being discharged when draining water from the drying skid in the prior art.
[0005] On one hand, this utility model provides a drying skid for use in an argon recovery system, the drying skid comprising:
[0006] The first cooler is used to introduce raw material gas and cool it.
[0007] A gas-liquid separator is connected to the first cooler and is used to separate the moisture from the raw gas passing through the first cooler.
[0008] The first drain pipe is connected to the first cooler.
[0009] The second sewage pipe is connected to the gas-liquid separator.
[0010] Zero-air-consumption drainer; a zero-air-consumption drainer is used for drainage.
[0011] At least one of the first and second drain pipes is connected to a zero-gas-consumption drainer.
[0012] In one implementation, the first and second drain pipes are each connected to a zero-gas-consumption drainer.
[0013] In one implementation, the drying skid also includes:
[0014] The third drain pipe is connected to the drain end of the first cooler. The third drain pipe is used for direct draining. The drain end of the first cooler is also connected to the first drain pipe.
[0015] The fourth drain pipe is connected to the drain end of the gas-liquid separator. The second drain pipe is used for direct sewage discharge. The drain end of the gas-liquid separator is also connected to the second drain pipe.
[0016] Sewage control valves are installed on the third and fourth sewage pipes.
[0017] In one implementation, the drying skid also includes:
[0018] The drying component is connected to the gas-liquid separator and is used to dry the raw gas that has passed through the gas-liquid separator.
[0019] In one implementation, the feed gas input end of the drying skid is connected to the compressor, and the drying skid also includes:
[0020] The heater is connected to the drying assembly. The heater is used to heat part of the raw gas that has passed through the drying assembly and to guide the heated raw gas back into the drying assembly.
[0021] The second cooler is connected to the drying assembly. The drying assembly is used to absorb heat from the raw material gas that has passed through the heater and introduce the raw material gas into the second cooler. The second cooler is used to cool the incoming raw material gas and export the cooled raw material gas to the compressor.
[0022] In one implementation, the drying component includes:
[0023] The drying tower has at least two units and can operate in two states: drying and regeneration.
[0024] The switching pipeline has multiple pipes, and the inlet and outlet ends of at least two drying towers are connected to the switching pipeline.
[0025] A switching valve, of which there are multiple, is connected to a switching pipeline and is used to regulate the on / off state of the corresponding switching pipeline;
[0026] During operation of the drying assembly, at least one drying tower is in a drying state, connected to a gas-liquid separator, and used to dry the raw gas passing through the gas-liquid separator. At least one drying tower is in a regeneration state, connected to the drying tower via a heater, and also connected to a second cooler, used to absorb heat from the raw gas passing through the heater and introduce the heat-absorbed raw gas into the second cooler. Each drying tower can switch between drying and regeneration states. At any given time during the operation of the drying assembly, at least one drying tower is in a drying state and at least one drying tower is in a regeneration state, enabling the drying assembly to continuously dry the raw gas.
[0027] In one implementation, the drying skid also includes:
[0028] The main branch pipe is connected to the drying assembly and is used to discharge the raw gas dried by the drying assembly;
[0029] There are two branch pipes, both of which are connected to the main branch pipe; one branch pipe is used to directly discharge the raw material gas, and the other branch pipe is used to introduce the raw material gas into the heater.
[0030] The first reflux pipe has one end connected to the heater and the other end connected to the drying component. The first reflux pipe is used to guide the raw material gas heated by the heater back into the drying component.
[0031] On the other hand, this utility model also provides an argon gas recovery system, including a drying skid, and the recovery system further includes:
[0032] compressor,
[0033] The vaporizer, compressor, drying skid, and vaporizer are arranged along the flow direction of the raw gas;
[0034] The second return pipe is connected to the outlet of the vaporizer and to the inlet of the compressor. The second return pipe is used to guide the raw material gas discharged along the vaporizer back to the compressor.
[0035] The fifth drain pipe is connected to the vaporizer and is used to directly discharge exhaust gas;
[0036] The switching valve has at least two valves, with a switching valve connected to both the second return pipe and the fifth drain pipe.
[0037] In one implementation, the recycling system also includes:
[0038] The main pipeline is connected to the vaporizer at one end and to the second return pipeline and the fifth drain pipe at the other end. Both the second return pipeline and the fifth drain pipe are connected to the vaporizer through the main pipeline.
[0039] The second return pipe and the fifth drain pipe are both located on the side of the compressor's raw gas inlet.
[0040] In one implementation, the recycling system includes a dust collector, a fan, a dual-mode gas holder, a compressor, a buffer tank, a drying skid, a CO removal module, a CO2 removal module, a cold box, and a vaporizer connected in sequence.
[0041] The beneficial effects of this utility model are as follows: By installing a zero-gas-consumption drainer inside the drying skid, the recovery rate of argon gas is effectively improved, and the discharge of argon gas and carbon water is avoided during drainage. Since a first cooler and a gas-liquid separator are installed inside the drying skid, the moisture in the raw material gas will condense into liquid water due to the temperature drop when the first cooler is running, and the gas-liquid separator will also separate the moisture in the gas. This moisture needs to be discharged in time, otherwise it will easily lead to corrosion inside the equipment and damage to parts. In addition, water accumulation will also affect the heat exchange efficiency. The existing structure drains directly, which easily leads to the simultaneous discharge of raw material gas. Therefore, this application uses a zero-gas-consumption drainer to drain the gas, avoiding the discharge of raw material gas during drainage, thereby effectively reducing the loss of raw material gas. Attached Figure Description
[0042] Figure 1 This is a schematic diagram of the drying skid in one embodiment;
[0043] Figure 2 This is a schematic diagram of the argon recovery system in another embodiment.
[0044] In the attached diagram, the components represented by each number are as follows:
[0045] 100. Drying skid;
[0046] 101. First cooler; 102. Gas-water separator; 103. First drain pipe; 104. Second drain pipe; 105. Zero-gas-consumption drainer; 106. Third drain pipe; 107. Fourth drain pipe; 108. Drain control valve;
[0047] 109. Drying assembly; 109-1. Drying tower; 109-2. Switching pipeline; 109-3. Switching valve;
[0048] 110. Heater; 111. Secondary cooler;
[0049] 112. Main branch pipe; 113. Branch pipe; 114. First return pipe; 115. Cooling pipe;
[0050] 210. Compressor; 220. Carburetor; 230. Second return pipe; 240. Fifth drain pipe; 250. Switch valve; 260. Main pipe. Detailed Implementation
[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application. It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components related to this utility model and are not drawn according to the actual number, shape, and size of the components. In actual implementation, the shape, quantity, and proportion of each component can be arbitrarily changed, and the component layout may also be more complex.
[0052] A drying skid, see Figure 1 This is used in an argon recovery system. The drying skid includes a first cooler 101, a gas-liquid separator 102, a first drain pipe 103, a second drain pipe 104, and a zero-gas-consumption drainer 105. The first cooler 101 is used to introduce and cool the raw material gas. The gas-liquid separator 102 is connected to the first cooler 101 and is used to separate the moisture in the raw material gas passing through the first cooler 101. The first drain pipe 103 is connected to the first cooler 101. The second drain pipe 104 is connected to the gas-liquid separator 102. The zero-gas-consumption drainer 105 is used to drain water. At least one of the first drain pipe 103 and the second drain pipe 104 is connected to a zero-gas-consumption drainer 105.
[0053] By adopting this solution, the recovery rate of argon gas is effectively improved by installing a zero-gas-consumption drainer 105 inside the drying skid, and the discharge of argon gas along with carbon water is avoided during drainage. Since the drying skid is equipped with a first cooler 101 and a gas-liquid separator 102, the moisture in the raw material gas will condense into liquid water due to the temperature drop when the first cooler 101 is running, and the gas-liquid separator 102 will also separate the moisture in the gas. This moisture needs to be discharged in time, otherwise it will easily lead to corrosion inside the equipment and damage to the components. In addition, water accumulation will also affect the heat exchange efficiency. The existing structure drains directly, which easily leads to the simultaneous discharge of raw material gas. Therefore, this application uses a zero-gas-consumption drainer 105 for drainage, avoiding the discharge of raw material gas during drainage, thereby effectively reducing the loss of raw material gas.
[0054] In the embodiment, for the first cooler 101 and the gas-liquid separator 102, as long as at least one is connected to a zero-gas-consumption drainer 105, the loss of raw material gas can be reduced.
[0055] In this embodiment, the feed gas is argon; see [link to example]. Figure 1The part circled in dashed circles in the figure is the zero-gas-consumption drainer 105.
[0056] Specifically, the zero-air-consumption drainer 105 in this solution is existing technology. The zero-air-consumption drainer 105 refers to a device that consumes little or no compressed air during the drainage process. It can automatically and efficiently remove condensate and impurities from equipment such as air tanks, refrigerated dryers, and filters without relying on an external compressed air source, achieving energy saving and environmental protection. The drainage principle of the zero-air-consumption drainer 105 includes: liquid level sensing, where a float or electronic sensor is installed inside the drainer to monitor the amount of condensate accumulated in the equipment in real time. When the water level rises to a certain level, the sensor detects this change; gravity action, once the water level reaches the set upper limit, the drainer automatically opens the drain valve, using gravity to discharge the accumulated condensate, which is effectively removed from the equipment through the drain valve; and an automatic shut-off mechanism, after drainage is completed, the drain valve automatically closes, waiting for the next water level rise to restart the drainage process.
[0057] In one embodiment of this application, the first drain pipe 103 and the second drain pipe 104 are respectively connected to a zero-gas-consumption drainer 105. In this way, by connecting the zero-gas-consumption drainer 105 to both the first cooler 101 and the gas-liquid separator 102, the discharge of raw material gas during the drainage of the first cooler 101 and the gas-liquid separator 102 is effectively avoided, thereby effectively reducing the loss of raw material gas.
[0058] In one embodiment of this application, see [link to embodiment]. Figure 1 The drying skid also includes a third drain pipe 106, a fourth drain pipe 107, and a drain control valve 108. The third drain pipe 106 is connected to the drain end of the first cooler 101 and is used for direct draining. The drain end of the first cooler 101 is also connected to a first drain pipe 103. The fourth drain pipe 107 is connected to the drain end of the gas-liquid separator 102. The second drain pipe 104 is used for direct draining. The drain end of the gas-liquid separator 102 is also connected to a second drain pipe 104. Drain control valves 108 are installed on both the third drain pipe 106 and the fourth drain pipe 107. Thus, by connecting the third drain pipe 106 to the first cooler 101, the first cooler 101 can directly drain and discharge sewage. That is, when draining sewage, the first cooler 101 can choose to drain through the zero-air-consumption drainer 105 or directly through the third drain pipe 106. Similarly, by connecting the fourth drain pipe 107 to the air-water separator 102, the air-water separator 102 can directly drain and discharge sewage. That is, when draining sewage, the air-water separator 102 can choose to drain through the zero-air-consumption drainer 105 or directly through the fourth drain pipe 107. The specific drain pipe used for sewage discharge is adjusted by switching the open and closed states of the control valve.
[0059] In some embodiments, the zero-gas-consumption drainer 105 is generally used directly for sewage discharge to ensure that gas loss is avoided during sewage discharge. When the zero-gas-consumption drainer 105 malfunctions, the opening and closing states of the control valve are adjusted so that sewage can be discharged directly through the third sewage pipe 106 and the fourth sewage pipe 107.
[0060] In one embodiment of this application, the drying skid further includes a drying assembly 109, which is connected to a gas-liquid separator 102. The drying assembly 109 is used to dry the raw gas passing through the gas-liquid separator 102. In this way, by connecting the drying assembly 109 to the gas-liquid separator 102, the raw gas passing through the gas-liquid separator 102 is effectively dried, thereby reducing the moisture content in the raw gas.
[0061] In one embodiment of this application, the raw material gas input end of the drying skid is connected to the compressor 210. The drying skid also includes a heater 110 and a second cooler 111. The heater 110 is connected to the drying assembly 109 and is used to heat part of the raw material gas passing through the drying assembly 109 and guide the heated raw material gas back into the drying assembly 109. The second cooler 111 is connected to the drying assembly 109 and is used to absorb heat from the raw material gas passing through the heater 110 and guide the raw material gas into the second cooler 111. The second cooler 111 is used to cool the incoming raw material gas and export the cooled raw material gas to the compressor 210. In this way, the drying component 109 can dry and cool the raw gas, and the resulting raw gas flow path is as follows: raw gas, drying component 109 dries the raw gas, heater 110 heats the raw gas, drying component 109 cools the raw gas, second cooler 111 cools the raw gas and compressor. It should be noted that at the heater 110, part of the raw gas is heated, that is, the raw gas is diverted before the heater 110.
[0062] In one implementation, the drying assembly 109 includes a drying tower 109-1, a switching pipe 109-2, and a switching valve 109-3. There are at least two drying towers 109-1, which have two working states: drying and regeneration. There are multiple switching pipes 109-2, and the inlet and outlet ends of at least two drying towers 109-1 are connected to the switching pipes 109-2. There are multiple switching valves 109-3, which are connected to the switching pipes 109-2 and used to regulate the on / off state of the corresponding switching pipes 109-2.
[0063] When the drying assembly 109 is operating, at least one drying tower 109-1 is in a drying state. The drying tower 109-1 in the drying state is connected to the gas-liquid separator 102 and is used to dry the raw material gas passing through the gas-liquid separator 102. At least one drying tower 109-1 is in a regeneration state. The drying tower 109-1 in the regeneration state is connected to the drying tower 109-1 in the drying state through a heater 110 and is also connected to the second cooler 111. The drying tower 109-1 in the drying state is used to absorb heat from the raw material gas passing through the heater 110 and introduce the heat-absorbed raw material gas into the second cooler 111. Each drying tower 109-1 can switch between the drying state and the regeneration state. At any time during the operation of the drying assembly 109, at least one drying tower 109-1 is in the drying state and at least one drying tower 109-1 is in the regeneration state, so that the drying assembly 109 can continuously dry the raw material gas.
[0064] Thus, since the drying assembly 109 includes at least two drying towers 109-1, in order for the drying assembly 109 to have the effect of continuous cyclic operation, at least one of all drying towers 109-1 must be in a drying state and used to dry the raw material gas, and at least one of all drying towers 109-1 must be in a state of regenerating the raw material gas and used to cool the raw material gas. Since the drying assembly 109 is connected to a heater 110, the raw material gas passes through the heater 110, is heated by the heater, and then the raw material gas is guided back to the drying tower 109-1 for regeneration, thereby transferring the heat of the raw material gas to the drying tower 109-1 for regeneration, which facilitates the regeneration of the drying tower 109-1.
[0065] For the adsorption drying tower 109-1, when the desiccant adsorbs water to saturation, it needs to be regenerated to restore its adsorption capacity. That is, the drying tower 109-1 needs to be converted from a drying state to a regeneration state. The regeneration method of the drying tower 109-1 in this application is to introduce heated raw material gas to raise the temperature of the desiccant, and the adsorption equilibrium of water will shift to the desorption direction, thereby desorbing the water from the desiccant.
[0066] Therefore, for at least two drying towers 109-1 in this application to be in working condition, it is foreseeable that among the at least two drying towers 109-1 in working condition, the drying state and the regeneration state of the drying tower 109-1 are not fixed. That is, when working, at least one drying tower 109-1 is in the state of drying the raw material gas, and at least one drying tower 109-1 is in the state of introducing raw material gas for regeneration. The adjustment of the state of multiple drying towers 109-1 is coordinated with the switching valve 109-3, that is, the direction of the raw material gas in the drying component 109 is adjusted by the switching valve 109-3.
[0067] See Figure 1 , Figure 1 In the diagram, A, A1, and A2 all indicate the direction of the raw material gas. A is an example of marking the flow direction of all raw material gas, while A1 and A2 are examples of marking the flow directions of two branch flows of the raw material gas. That is, the position marked by A is the main flow pipe of the raw material gas, and the positions marked by A1 and A2 are the branch flow pipes of the raw material gas. The direction of the arrow indicates the flow direction of the raw material gas A. The last position A1 is the corresponding outlet of the raw material gas connected to the compressor 210. The movement direction of the raw material gas from entering the drying skid to entering the compressor 210 is as follows: first cooler 101, gas-water separator 102, drying tower 109-1 in the drying state, heater 110, drying tower 109-1 in the regeneration state, second cooler 111, compressor 210.
[0068] In some embodiments, each switching pipe 109-2 in the drying assembly 109 is provided with a corresponding switching valve 109-3 to adjust the flow direction of the raw material gas inside the drying assembly 109.
[0069] In one embodiment of this application, the drying skid further includes a main branch pipe 112, branch pipes 113, and a first return pipe 114. The main branch pipe 112 is connected to the drying assembly 109 and is used to discharge the raw material gas dried by the drying assembly 109. There are two branch pipes 113, both of which are connected to the main branch pipe 112. One branch pipe 113 is used to directly discharge the raw material gas, and the other branch pipe 113 is used to guide the raw material gas to the heater 110. One end of the first return pipe 114 is connected to the heater 110, and the other end of the first return pipe 114 is connected to the drying assembly 109. The first return pipe 114 is used to guide the raw material gas heated by the heater 110 back into the drying assembly 109. In this way, when the raw material gas enters the drying skid, part of the raw material gas returns to the compressor 210, and part of the raw material gas is discharged from the drying skid to continue the subsequent process, so as to meet the cyclic operation of the two drying towers 109-1 in the drying skid.
[0070] See Figure 1 , Figure 1 In the diagram, A represents the raw material gas. The locations marked with A are the main flow pipes for the raw material gas. A1 and A2 are the branch flow pipes for the raw material gas. The direction of the arrows indicates the flow direction of raw material gas A. The final point, A2, is an outlet for the raw material gas to the next module. Therefore, correspondingly, the flow direction of the raw material gas from entering the drying skid to exiting to the next module is: first cooler 101, gas-liquid separator 102, drying tower 109-1 in a drying state. From... Figure 2 It can be seen that the next module is the CO removal module.
[0071] In one embodiment of this application, see [link to embodiment]. Figure 1 The drying skid also includes a cooling pipe 115, which is used to introduce a refrigerant medium and is connected to both the first cooler 101 and the second cooler 111. Thus, by introducing a refrigerant medium that can lower the temperature through the cooling pipe 115, the cooling effect of the first cooler 101 and the second cooler 111 on the raw material gas is maintained.
[0072] See Figure 1 B represents the refrigerant, B1 is the outlet of the refrigerant entering the first cooler 101, and B2 is the outlet of the refrigerant entering the second cooler 111.
[0073] In some embodiments, specifically, the cooling pipe 115 includes two corresponding branch pipes, one branch pipe is connected to the first cooler 101 and the other branch pipe is connected to the second cooler 111, thereby ensuring the supply of refrigerant in the first cooler 101 and the second cooler 111.
[0074] Cooling is achieved using a refrigerant in the cooler. When argon gas is cooled using a refrigerant, the moisture content of the argon gas does not increase; instead, it decreases. This is because: low temperatures cause water vapor to condense. The temperature of the refrigerant is lower than the dew point temperature of the water vapor in the argon gas. When the argon gas is cooled, the water vapor reaches saturation and condenses into liquid water. This liquid water separates from the argon gas, typically through the cooler's drainage system or a subsequent gas-liquid separator, thus reducing the moisture content. Secondly, regarding the relationship between gas humidity and temperature, according to gas humidity theory, under a certain pressure, the saturated water vapor content of a gas decreases as the temperature decreases. When argon gas is cooled, its saturated water vapor content decreases, and the original water vapor content exceeds the new saturation value. The excess water vapor precipitates out as liquid water, resulting in a decrease in both the absolute and relative humidity of the argon gas.
[0075] The freezing medium can be chilled water.
[0076] An argon recovery system, see Figure 2 It is important to know that, due to Figure 2 The invention point is the part marked with a number, namely the thickened pipe passage; the rest is an existing structure and therefore not described in detail.
[0077] An argon recovery system, see Figure 2The system includes a drying skid and a recovery system that also includes a compressor 210, a vaporizer 220, a second return pipe 230, a fifth drain pipe 240, and a switching valve 250. The compressor 210, the drying skid, and the vaporizer 220 are arranged along the flow direction of the raw material gas. The second return pipe 230 is connected to the outlet of the vaporizer 220 and to the inlet of the compressor 210. The second return pipe 230 is used to guide the raw material gas discharged along the vaporizer back to the compressor 210. The fifth drain pipe 240 is connected to the vaporizer 220 and is used to directly discharge the waste gas. There are at least two switching valves 250, and each of the second return pipe 230 and the fifth drain pipe 240 is connected to a switching valve 250. In this way, when the argon recovery system is working, the initial raw material gas discharged from the vaporizer 220 is waste gas. This waste gas can be understood as the air that exists in the original state within the entire argon recovery system. That is, during the initial period of operation of the vaporizer 220, the air and other waste gases in the pipeline system will be discharged. After the waste gas is discharged, the gas discharged from the vaporizer 220 is the raw material gas. By setting a second return pipeline 230, the raw material gas is returned and introduced into the compressor 210, so that this part of the gas participates in the operation of the entire system again. In contrast, in the prior art, the gas discharged from the vaporizer 220 is all discharged as waste gas. Therefore, compared with the prior art, this application effectively improves the argon recovery rate.
[0078] In the embodiments, see Figure 2 Switch valves 250 are connected to both the second return pipe 230 and the fifth drain pipe 240. When a pipe needs to be opened, the switch valve 250 on the corresponding pipe is opened, thereby realizing the discharge or recovery of the gas discharged from the vaporizer 220.
[0079] For the sake of consistency, all gases flowing in the argon recovery system throughout the entire process will be referred to as raw material gases. However, it is understandable that the composition and content of raw material gases at different stages may not be the same. For example, the water content of raw material gases may not be the same in each step.
[0080] In one embodiment of this application, see [link to embodiment]. Figure 2The recovery system also includes a main pipe 260, one end of which is connected to the vaporizer 220, and the other end of which is connected to both the second return pipe 230 and the fifth drain pipe 240. Both the second return pipe 230 and the fifth drain pipe 240 are connected to the vaporizer 220 via the main pipe 260. Both the second return pipe 230 and the fifth drain pipe 240 are located on the side of the raw material gas inlet of the compressor 210. This arrangement of the main pipe 260 allows the second return pipe 230 and the fifth drain pipe 240 to share a section of pipe before being diverted, with corresponding switching valves 250 installed at the diversion points. This prevents the accumulation of waste gas within the pipes and facilitates complete waste gas discharge. Furthermore, placing both the second return pipe 230 and the fifth drain pipe 240 near the compressor 210 allows for increasing the length of the main pipe 260 and shortening the lengths of the second return pipe 230 and the fifth drain pipe 240, preventing excessive accumulation of waste gas or recovered raw material gas within the pipes.
[0081] In one embodiment of this application, see [link to embodiment]. Figure 2 The recovery system includes a dust collector, a fan, a dual-mode gas holder, a compressor 210, a buffer tank, a drying skid, a CO removal module, a CO2 removal module, a cold box, and a vaporizer 220, all connected in sequence. This clearly defines the flow direction of the raw material gas—argon—facilitating its recovery.
[0082] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0083] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A drying skid for use in an argon recovery system, characterized in that, The drying skid includes: The first cooler (101) is used to introduce raw material gas and cool the raw material gas; A gas-water separator (102) is connected to the first cooler (101) and is used to separate moisture from the raw gas passing through the first cooler (101). The first drain pipe (103) is connected to the first cooler (101); The second sewage pipe (104) is connected to the gas-water separator (102); Zero-air-consumption drainer (105), the zero-air-consumption drainer (105) is used for draining; At least one of the first drain pipe (103) and the second drain pipe (104) is connected to the zero-gas-consumption drainer (105).
2. The drying skid according to claim 1, characterized in that, The first drain pipe (103) and the second drain pipe (104) are respectively connected to a zero-gas-consumption drainer (105).
3. The drying skid according to claim 1 or 2, characterized in that, The drying skid also includes: The third drain pipe (106) is connected to the drain end of the first cooler (101). The third drain pipe (106) is used for direct draining. The drain end of the first cooler (101) is also connected to the first drain pipe (103). The fourth sewage pipe (107) is connected to the sewage discharge end of the gas-water separator (102). The second sewage pipe (104) is used for direct sewage discharge. The sewage discharge end of the gas-water separator (102) is also connected to the second sewage pipe (104). The sewage control valve (108) is installed on both the third sewage pipe (106) and the fourth sewage pipe (107).
4. The drying skid according to claim 1, characterized in that, The drying skid also includes: A drying assembly (109) is connected to the gas-liquid separator (102) and is used to dry the raw gas passing through the gas-liquid separator (102).
5. The drying skid according to claim 4, characterized in that, The raw material gas input end of the drying skid is connected to the compressor (210), and the drying skid also includes: A heater (110) is connected to the drying assembly (109). The heater (110) is used to heat part of the raw material gas passing through the drying assembly (109) and guide the heated raw material gas back into the drying assembly (109). The second cooler (111) is connected to the drying assembly (109). The drying assembly (109) is used to absorb heat from the raw material gas passing through the heater (110) and introduce the raw material gas into the second cooler (111). The second cooler (111) is used to cool the introduced raw material gas and export the cooled raw material gas to the compressor (210).
6. The drying skid according to claim 5, characterized in that, The drying assembly (109) includes: A drying tower (109-1) is provided, wherein there are at least two drying towers (109-1), and the drying towers (109-1) have two working states: drying and regeneration. A switching pipe (109-2) is provided, wherein there are multiple switching pipes (109-2), and the inlet and outlet ends of at least two of the drying towers (109-1) are connected to the switching pipes (109-2); A switching valve (109-3) is provided, wherein there are multiple switching valves (109-3), and the switching valves (109-3) are connected to the switching pipe (109-2) and used to adjust the on / off state of the corresponding switching pipe (109-2); During operation of the drying assembly (109), at least one of the drying towers (109-1) is in a drying state. The drying tower (109-1) in the drying state is connected to the gas-liquid separator (102), and is used to dry the raw material gas passing through the gas-liquid separator (102). At least one of the drying towers (109-1) is in a regeneration state. The drying tower (109-1) in the regeneration state is connected to the drying tower (109-1) in the drying state via the heater (110). 09-1) is also connected to the second cooler (111). The drying tower (109-1) in the dry state is used to absorb heat from the raw material gas passing through the heater (110) and introduce the heated raw material gas into the second cooler (111). Each drying tower (109-1) can switch between a drying state and a regeneration state. At any time during the operation of the drying component (109), at least one drying tower (109-1) is in a drying state and at least one drying tower (109-1) is in a regeneration state, so that the drying component (109) can continuously dry the raw material gas.
7. The drying skid according to claim 6, characterized in that, The drying skid also includes: A main branch pipe (112) is connected to the drying assembly (109) and is used to discharge the raw material gas dried by the drying assembly (109); Two branch pipes (113) are provided, both of which are connected to the main branch pipe (112); one branch pipe (113) is used to directly discharge the raw material gas, and the other branch pipe (113) is used to introduce the raw material gas into the heater (110). A first return pipe (114) is connected at one end to the heater (110) and at the other end to the drying assembly (109). The first return pipe (114) is used to guide the raw material gas heated by the heater (110) back into the drying assembly (109).
8. An argon gas recovery system, characterized in that, The recycling system further includes the drying skid as described in any one of claims 1-7, and further includes: Compressor (210), The vaporizer (220), the compressor (210), the drying skid and the vaporizer (220) are arranged along the flow direction of the raw material gas; The second return pipe (230) is connected to the outlet end of the vaporizer (220) and to the inlet end of the compressor (210). The second return pipe (230) is used to guide the raw material gas discharged along the vaporizer back to the compressor (210). The fifth drain pipe (240) is connected to the vaporizer (220) and is used to directly discharge waste gas; The switching valve (250) is at least two in number, and is connected to both the second return pipe (230) and the fifth drain pipe (240).
9. The argon recovery system according to claim 8, characterized in that, The recycling system also includes: A main pipe (260) is provided, one end of which is connected to the vaporizer (220), and the other end of which is connected to both the second return pipe (230) and the fifth drain pipe (240). Both the second return pipe (230) and the fifth drain pipe (240) are connected to the vaporizer (220) through the main pipe (260). The second return pipe (230) and the fifth drain pipe (240) are both located on the side of the raw material gas inlet end of the compressor (210).
10. The argon recovery system according to claim 8, characterized in that, The recycling system includes a dust collector, a fan, a dual-mode gas holder, the compressor (210), a buffer tank, the drying skid, a CO removal module, a CO2 removal module, a cold box, and the vaporizer (220) connected in sequence.