Condensate water and argon recovery device of deoxidizing pre-cooler

Abstract

The utility model provides a condensate water and argon recovery device of a deoxidizing pre-cooler. The condensate water and argon recovery device comprises a gas-water separation module, a liquid collection module and a gas collection module, a water inlet of the gas-water separation module is connected with the deoxidizing pre-cooler; a water outlet of the gas-water separation module is connected with a water inlet of the liquid collection module; a water outlet of the liquid collecting module is connected with a circulating water system; an exhaust port of the gas-water separation module is connected with a gas inlet of the gas collection module; an exhaust port of the gas collection module is connected with a tail gas system; condensed water of the deoxidizing pre-cooler enters the gas-water separation module for gas-water separation, and gas is adsorbed and dried by calcium chloride solid filler in the gas collection module and is discharged to a tail gas system; and the liquid after gas-water separation flows into the circulating water system through the liquid collecting module. Zero emission is realized by recovering water and argon discharged by the deoxidizing pre-cooler; and meanwhile, the argon recovery efficiency is improved, water resource recovery is achieved, the resource utilization efficiency is improved, and economic quality and efficiency improvement are promoted.

Description

Technical Field

[0001] This utility model relates to the field of energy efficiency and resource optimization technology, and in particular to a condensate and argon recovery device for a deoxygenated precooler. Background Technology

[0002] In the production of monocrystalline silicon, argon gas, as an important protective gas and heat carrier, plays a crucial role in product quality and production efficiency.

[0003] However, in existing argon recovery processes, the wastewater from the deaerator precooler contains a large amount of argon (argon content ≥90%), which is directly discharged without effective recovery. Furthermore, water vapor in the wastewater is directly discharged after condensation, wasting water resources and increasing water treatment costs. In addition, directly recovering high-humidity argon into the exhaust gas system easily leads to scaling on the dust collector filter surface, increasing equipment maintenance frequency and management costs, and posing certain risks to the production process.

[0004] Therefore, how to effectively recover the water discharged from the deoxygenated precooler and the entrained argon is an urgent problem to be solved. Utility Model Content

[0005] In view of this, this utility model provides a condensate and argon recovery device for a deoxygenated precooler to solve the problem that the water discharged from the deoxygenated precooler and the entrained argon cannot be recovered.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The first aspect of this utility model discloses a condensate and argon recovery device for a deoxygenated precooler, the device comprising: a gas-liquid separation module, a liquid collection module and a gas collection module;

[0008] The inlet of the gas-water separation module is connected to the deoxygenation precooler;

[0009] The drain outlet of the gas-liquid separation module is connected to the inlet of the liquid collection module;

[0010] The drain outlet of the liquid collection module is connected to the circulating water system;

[0011] The exhaust port of the gas-water separation module is connected to the air inlet of the gas collection module;

[0012] The exhaust port of the gas collection module is connected to the exhaust gas system;

[0013] The gas collection module is filled with calcium chloride solid filler.

[0014] The condensate from the deaerator precooler enters the gas-liquid separation module for gas-liquid separation. The separated gas is adsorbed and dried by calcium chloride solid packing in the gas collection module and discharged to the tail gas system. The liquid after gas-liquid separation flows into the circulating water system through the liquid collection module.

[0015] Preferably, the gas-water separation module is a gas-water separator;

[0016] The deaerator precooler is connected to the inlet of the steam-water separator;

[0017] The drain outlet of the gas-water separator is connected to the inlet of the liquid collection module via a valve;

[0018] The exhaust port of the gas-water separator is connected to the air inlet of the gas collection module.

[0019] Preferably, the drain outlet of the steam-water separator is located at the bottom of the steam-water separator;

[0020] The exhaust port of the steam-water separator is located at the top of the steam-water separator.

[0021] Preferably, the steam-water separator is equipped with a level gauge;

[0022] The level gauge is used to measure the liquid level in the steam-water separator.

[0023] Preferably, the liquid collection module is a diaphragm water pump;

[0024] The drain outlet of the gas-water separation module is connected to the inlet of the diaphragm water pump via a valve.

[0025] The drain outlet of the diaphragm pump is connected to the circulating water system via a valve.

[0026] Preferably, the gas collection module is a dehydrator;

[0027] The air inlet of the dehydrator is connected to the exhaust port of the air-water separation module via a valve;

[0028] The exhaust port of the dehydrator is connected to the exhaust gas system via a valve;

[0029] The calcium chloride solid packing in the dehydrator is used to dry the gas after gas-water separation by the gas-water separation module.

[0030] Preferably, the dehydrator includes at least two tanks;

[0031] The common end of the air inlet of the two tanks is connected to the exhaust port of the steam-water separator;

[0032] The common end of the exhaust ports of the two tanks is connected to the exhaust gas system via a valve.

[0033] The calcium chloride solid packing in each of the tanks is used for drying the gas.

[0034] Preferably, the exhaust port of the gas collection module is connected to the vent pipe.

[0035] Preferably, the tank of the gas-water separator is made of stainless steel.

[0036] Preferably, the tank body is made of polypropylene.

[0037] A condensate and argon recovery device for a deoxygenated precooler, based on the above-described embodiment of this utility model, comprises: a gas-liquid separation module, a liquid collection module, and a gas collection module; the inlet of the gas-liquid separation module is connected to the deoxygenated precooler; the outlet of the gas-liquid separation module is connected to the inlet of the liquid collection module; the outlet of the liquid collection module is connected to a circulating water system; the exhaust port of the gas-liquid separation module is connected to the inlet of the gas collection module; the exhaust port of the gas collection module is connected to a tail gas system; the gas collection module is filled with calcium chloride solid packing material; the condensate from the deoxygenated precooler enters the gas-liquid separation module for gas-liquid separation; the separated gas is adsorbed and dried by the calcium chloride solid packing material in the gas collection module and discharged to the tail gas system; the liquid after gas-liquid separation flows into the circulating water system through the liquid collection module. By recovering the water and argon discharged from the deoxygenated precooler, zero emissions are achieved; simultaneously, argon recovery efficiency is improved and water resources are recovered, enhancing resource utilization efficiency and promoting the quality and efficiency of economic growth. Attached Figure Description

[0038] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0039] Figure 1 A first structural diagram of a condensate and argon recovery device for a deoxygenated precooler provided in this embodiment of the present invention;

[0040] Figure 2 A second structural diagram of a condensate and argon recovery device for a deoxygenated precooler provided in this embodiment of the present invention;

[0041] Figure 3 A third structural diagram of a condensate and argon recovery device for a deoxygenated precooler provided in this embodiment of the present invention;

[0042] Figure 4 A fourth structural diagram of a condensate and argon recovery device for a deoxygenated precooler provided in this embodiment of the present invention;

[0043] Among them, 1 is the gas-liquid separation module; 2 is the liquid collection module; 3 is the gas collection module; 11 is the gas-liquid separator; 12 is the level gauge; 21 is the diaphragm water pump; and 31 is the dehydrator. Detailed Implementation

[0044] 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.

[0045] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover a 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 limitation, 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.

[0046] As the background technology indicates, in existing argon recovery processes, the wastewater from the deoxygenation precooler carries a large amount of argon and water vapor, which are directly discharged without effective recovery. This not only results in waste but also increases processing costs. Furthermore, because the high-humidity argon is carried into the exhaust gas system, it easily forms scale on the surface of the dust collector filter element, thereby increasing the frequency of equipment maintenance and management costs, and posing certain risks to the production process.

[0047] Therefore, this utility model embodiment provides a condensate and argon recovery device for a deoxygenated precooler. The device includes: a gas-liquid separation module, a liquid collection module, and a gas collection module; the inlet of the gas-liquid separation module is connected to the deoxygenated precooler; the outlet of the gas-liquid separation module is connected to the inlet of the liquid collection module; the outlet of the liquid collection module is connected to a circulating water system; the exhaust port of the gas-liquid separation module is connected to the inlet of the gas collection module; the exhaust port of the gas collection module is connected to a tail gas system; the gas collection module is filled with calcium chloride solid packing; the condensate from the deoxygenated precooler enters the gas-liquid separation module for gas-liquid separation, and the separated gas is adsorbed and dried by the calcium chloride solid packing in the gas collection module and discharged to the tail gas system; the liquid after gas-liquid separation flows into the circulating water system through the liquid collection module. By recovering the water discharged from the deoxygenated precooler and the entrained argon, zero emissions from the precooler are achieved. Simultaneously, argon recovery efficiency is improved and water resources are recycled, improving resource utilization efficiency and thus enhancing the quality and efficiency of economic growth.

[0048] See Figure 1 The diagram shows a first structural diagram of a condensate and argon recovery device for a deoxygenated precooler provided in an embodiment of the present invention.

[0049] It should be noted that the condensate and argon recovery devices of this deaerator precooler are all mounted on a skid, making them easy to place and move.

[0050] The condensate and argon recovery device of the deoxygenated precooler includes a gas-water separation module 1, a liquid collection module 2, and a gas collection module 3.

[0051] Specifically, the inlet of the gas-liquid separation module 1 is connected to the deaerator precooler; the outlet of the gas-liquid separation module 1 is connected to the inlet of the liquid collection module 2; and the outlet of the liquid collection module 2 is connected to the circulating water system.

[0052] Furthermore, the exhaust port of the gas-water separation module 1 is connected to the air inlet of the gas collection module 3; the exhaust port of the gas collection module 3 is connected to the exhaust gas system.

[0053] It should be noted that the gas collection module 3 is filled with calcium chloride solid filler.

[0054] It should be noted that the condensate from the deaerator precooler enters the gas-liquid separation module 1 for gas-liquid separation. The separated gas is adsorbed and dried by the gas collection module 3 and discharged to the exhaust gas system; while the liquid after gas-liquid separation flows into the circulating water system through the liquid collection module 2.

[0055] To better understand the application process of the recycling device provided in the embodiments of this application, the following explanation is provided in conjunction with the complete recycling process.

[0056] In the monocrystalline silicon production process, argon-rich waste gas emitted from the monocrystalline workshop is treated by a dust filter before being sent to the argon recovery plant. Inside the plant, the waste gas is first buffered by a dual-membrane gas holder, and then pressurized by a raw material gas compressor to a carbon removal module. In the carbon removal module, carbon monoxide is converted into carbon dioxide and water through a catalytic reaction, and then adsorbed and removed by a carbon removal molecular sieve. Next, the waste gas enters an oxygen removal module, where oxygen in the argon gas undergoes a hydrogenation catalytic reaction with hydrogen to produce water.

[0057] The water vapor in the deaerator module is first cooled in the deaerator cooler, causing a large amount of water vapor to condense into water. Then, the gas enters the deaerator precooler for secondary cooling, where the temperature drops from 40°C to about 10°C, further condensing the water vapor into water, i.e., condensate.

[0058] Next, in this recovery device, the condensate from the deaerator precooler enters the gas-water separation module 1 through the inlet of the gas-water separation module 1 for gas-water separation.

[0059] On one hand, the separated gas flows into the inlet of the gas collection module 3 through the exhaust port of the gas-water separation module 1. The gas collection module 3 adsorbs and dries the incoming gas before discharging it into the tail gas system. At this point, the argon gas in the condensate of the deoxygenation precooler is recovered. Meanwhile, the separated high-purity argon gas mixes with the workshop's recovered tail gas in the tail gas system and enters the dual-membrane gas holder, achieving gas recovery.

[0060] On the other hand, the liquid after gas-liquid separation flows into liquid collection module 2 through the drain of gas-liquid separation module 1 and into the circulating water system. This liquid can be used for compressor cooling and circulating water replacement.

[0061] In practical applications, by analyzing and measuring the gas and liquid recovered by this recovery device, it can be clearly determined that:

[0062] The recovered gas mainly consists of argon, nitrogen, and hydrogen, with argon accounting for over 90%. According to on-site flow meter readings, the gas flow rate is 200 L / min, which translates to approximately 0.4 tons of liquid argon per day.

[0063] For example, based on a liquid argon price of 1000 yuan / ton, the equivalent value is approximately 400 yuan / day. This translates to an annual saving of approximately 146,000 yuan in liquid argon procurement costs, demonstrating significant recycling value.

[0064] Therefore, this recycling device helps to reduce production costs and improve the quality and efficiency of economic growth.

[0065] The recovered liquid was tested and found to have a conductivity of 3 μs / cm, meeting the standard for secondary pure water, and can be directly used to replenish the internal circulating water in the equipment.

[0066] Understandably, since argon gas is carried out through external drainage, a dehumidification system is needed to recover the entrained argon. If the humidity in the exhaust gas is too high, sludge may form on the surface of the dust filter element during the recovery process, thus hindering the recovery of the exhaust gas.

[0067] Therefore, this recovery device recovers the water discharged from the deaerator precooler and the entrained gas separately, which helps to achieve zero emissions from the deaerator precooler and save costs. Furthermore, this recovery device integrates a pure water circulation system, replacing external water supply and reducing water treatment costs.

[0068] In this embodiment, a series of measures were taken to reduce production costs and improve resource utilization efficiency, including improving argon recovery efficiency, reducing energy consumption, and realizing water resource recycling. Specifically, by recovering the water and entrained gas discharged from the deoxygenated precooler, zero emissions from the precooler were successfully achieved, further saving costs. Furthermore, a combined gas-water separation and chemical dehydration technology was used to ensure zero argon emissions; an integrated pure water circulation system replaced external water replenishment, effectively reducing water treatment costs; and a skid-mounted modular design improved the flexibility and ease of maintenance of the device. These measures collectively contributed to reducing production costs and improving economic benefits.

[0069] Combination Figure 2 The diagram shows a second structural diagram of a condensate and argon recovery device for a deoxygenated precooler. Figure 1 The gas-water separation module 1 shown is specifically a gas-water separator 11.

[0070] Specifically, the deaerator precooler is connected to the inlet of the steam-water separator 11.

[0071] In some embodiments, the deaerator precooler is specifically connected to the inlet of the steam-water separator 11 via a valve.

[0072] Furthermore, the drain outlet of the steam-water separator 11 is connected to the inlet of the liquid collection module 2 via a valve; the exhaust outlet of the steam-water separator 11 is connected to the inlet of the gas collection module 3 via a valve.

[0073] In some embodiments, the tank of the gas-water separator 11 is made of stainless steel.

[0074] In practical applications, the drain outlet of the steam-water separator 11 is located at the bottom of the steam-water separator 11; the exhaust outlet of the steam-water separator 11 is located at the top of the steam-water separator 11.

[0075] In the application embodiment, a level gauge 12 is provided on the steam-water separator 11.

[0076] The level gauge 12 is used to measure the liquid level in the steam-water separator 11.

[0077] Understandably, when the liquid level collected in the gas-liquid separator 11 reaches the threshold, the liquid can be injected into the liquid collection module 2 through the valve. This can prevent too much liquid from entering the gas collection module 3 and causing damage.

[0078] It should be noted that the valve here can be a manual valve or a solenoid valve, used to control the drainage time.

[0079] Understandably, gas-water separators offer significant advantages in industrial applications. They effectively separate liquids and gases, reducing energy consumption. Simultaneously, gas-water separators ensure the purity of the gas or steam, improving product quality and thus increasing production efficiency. Their economic benefits are substantial, reducing operating and maintenance costs while minimizing carbon emissions, resulting in environmental benefits. Furthermore, gas-water separators are simple in structure, easy to maintain, and highly adaptable.

[0080] Combination Figure 3 The diagram shown is a third structural diagram of a condensate and argon recovery device for a deoxygenated precooler.

[0081] It is understandable that the liquid collection module 2 is specifically the diaphragm water pump 21.

[0082] Specifically, the drain outlet of the gas-water separation module 1 is connected to the inlet of the diaphragm water pump 21 via a valve; the drain outlet of the diaphragm water pump 21 is connected to the circulating water system via a valve.

[0083] In other words, the drain outlet of the steam-water separator 11 is connected to the inlet of the diaphragm water pump 21 via a valve.

[0084] It should be noted that the operation of the diaphragm water pump 21 is controlled by compressed air. In other words, the start-up and operation of the diaphragm water pump 21 are regulated and driven by the pressure of compressed air.

[0085] It is important to note that using diaphragm pumps to collect and recover liquids offers several advantages. First, it ensures leak-free operation, preventing environmental contamination and waste. Second, diaphragm pumps are highly adaptable, capable of handling various types of liquids, including those containing solid particles, with high viscosity, or corrosiveness, and possess strong self-priming capabilities, ensuring pump reliability and efficiency. Because they do not rely on oil lubrication, they also avoid oil contamination, making them suitable for applications requiring liquid purity. Furthermore, diaphragm pumps are driven by compressed air, requiring no electricity, making them suitable for environments without power or in explosion-proof conditions. Adjustable flow rates and simple maintenance contribute to the high reliability and efficiency of diaphragm pumps in liquid recovery processes.

[0086] Combination Figure 4 The diagram shown is the fourth structural diagram of a condensate and argon recovery device for a deoxygenated precooler.

[0087] It is understandable that the gas collection module 3 is specifically the dehydrator 31.

[0088] Specifically, the air inlet of the dehydrator 31 is connected to the exhaust port of the gas-water separation module 1 through a valve. In other words, the air inlet of the dehydrator 31 is connected to the exhaust port of the gas-water separator 11 through a valve; the exhaust port of the dehydrator 31 is connected to the exhaust gas system through a valve.

[0089] Understandably, multiple valves can be installed between the air inlet of the dehydrator 31 and the exhaust port of the gas-water separation module 1 to control the gas flow rate.

[0090] It should be noted that the dehydrator 31 is filled with calcium chloride solid packing material. The dehydrator 31 is used to dry the gas after gas-water separation in the gas-water separation module 1 (that is, the gas-water separator 11).

[0091] Understandably, the dehydrator 31 includes at least two tanks.

[0092] Specifically, the common connection end of the air inlets of the two tanks is connected to the exhaust port of the steam-water separator; the common connection end of the exhaust ports of the two tanks is connected to the exhaust gas system through a valve.

[0093] In other words, combining Figure 4 As shown, the common connection end between the air inlet of the left tank and the air inlet of the right tank in the dehydrator 31 is connected to the exhaust port of the steam-water separator 11 through a valve.

[0094] The common connection end between the exhaust port of the left tank and the exhaust port of the right tank in the dehydrator 31 is connected to the exhaust gas system through a valve.

[0095] Each tank is filled with calcium chloride solid packing. Calcium chloride solid packing is used to dehydrate the gas, ensuring that the gas moisture content is reduced.

[0096] Specifically, the tank is made of polypropylene (PP).

[0097] It should be noted that the two tanks are used alternately, one for use and one for backup.

[0098] Understandably, alternating use of the two tanks in a one-in-one-out tank system offers significant advantages. First, this design ensures continuous operation of the dewatering unit. While one tank is in use, the other can be maintained, have its packing replaced, or be cleaned, preventing downtime from disrupting the entire unit's operation. Second, alternating use extends the dewatering unit's lifespan. Because the two tanks work alternately, the frequency of use for each tank decreases, reducing wear and tear caused by prolonged continuous operation. Furthermore, this mode improves the dewatering unit's flexibility and reliability. If one tank malfunctions or requires maintenance, the other can be immediately put into use, ensuring the unit is not interrupted by a single equipment problem.

[0099] Furthermore, calcium chloride dehydration technology is mature. After dehydration by chemical adsorption using solid calcium chloride, the liquid calcium chloride can be reused for wastewater treatment, offering two main advantages. First, calcium chloride adsorption dehydration not only removes a large amount of water but also uses relatively little calcium chloride. In traditional dehydration processes, the waste liquid generated after using calcium chloride usually needs to be treated or discarded, increasing waste disposal costs. However, after dehydration by calcium chloride adsorption, the liquid calcium chloride still retains its chemical adsorption capacity and can be directly used for subsequent wastewater defluorination treatment in this embodiment. The liquid calcium chloride can remove fluoride ions from wastewater through a chemical reaction, not only making full use of calcium chloride resources but also avoiding waste generation, achieving a "zero waste" effect; it also avoids the complexity and cost of secondary treatment. Liquid calcium chloride avoids additional treatment steps, reducing potential environmental pollution. At the same time, this method can significantly reduce the overall cost of wastewater treatment because the reuse of liquid calcium chloride eliminates the need for new materials and the cost of waste liquid treatment. Second, since the regeneration process of the dehydration packing is omitted, the overall operating efficiency of the treatment system is improved. The reduction in energy consumption directly lowers operating costs. Furthermore, since calcium chloride packing can be directly used for defluorination in wastewater treatment after dewatering, it avoids the regeneration steps required by traditional dewatering packing, significantly reducing the complexity of operation and maintenance. This method not only reduces workload in practical applications but also provides greater scope for optimizing the treatment process.

[0100] In an application embodiment, the exhaust port of the gas collection module 3 can also be connected to a venting pipe.

[0101] In other words, the common connection end between the exhaust port of the left tank and the exhaust port of the right tank in the dehydrator 31 is connected to the venting pipe through a valve.

[0102] Understandably, the venting pipe is used to discharge the gas in the gas collection module 3 into the atmosphere. Its main functions include releasing pressure when the pressure in the pipe is too high to prevent equipment damage or safety accidents; and quickly discharging gas in case of failure or emergency to ensure the safety of the recovery device.

[0103] To better understand the various parts of the recycling device provided in the embodiments of this application, the following explanation is provided in conjunction with the complete recycling process.

[0104] In the monocrystalline silicon production process, argon-rich waste gas emitted from the monocrystalline workshop is treated by a dust filter before being sent to the argon recovery plant. Inside the plant, the waste gas is first buffered by a dual-membrane gas holder, and then pressurized by a raw material gas compressor to a carbon removal module. In the carbon removal module, carbon monoxide is converted into carbon dioxide and water through a catalytic reaction, and then adsorbed and removed by a carbon removal molecular sieve. Next, the waste gas enters an oxygen removal module, where oxygen in the argon gas undergoes a hydrogenation catalytic reaction with hydrogen to produce water.

[0105] The water vapor in the deaerator module is first cooled in the deaerator cooler, causing a large amount of water vapor to condense into water. Then, the gas enters the deaerator precooler for secondary cooling, where the temperature drops from 40°C to about 10°C, further condensing the water vapor into water, i.e., condensate.

[0106] Next, in this recovery device, the condensate from the deaerator precooler flows into the inlet of the steam-water separator 11. The condensate undergoes gas-water separation in the steam-water separator 11.

[0107] On one hand, the separated gas is injected into the air inlet of the dehydrator 31 through the exhaust port of the gas-water separator 11. In the tank of the dehydrator 31, the gas is adsorbed and dried by calcium chloride solid. The dried gas is injected into the exhaust system from the exhaust port of the dehydrator 31.

[0108] Understandably, the dried gas contains only small amounts of nitrogen and hydrogen, in addition to argon. It enters a cold box in the tail gas system for cryogenic distillation, separating the nitrogen and hydrogen to obtain high-purity argon. This argon is then pressurized by a product gas compressor to the pressure required for the argon-using process and returned to the argon-using process.

[0109] Meanwhile, the calcium chloride liquid produced in the dewatering unit 31 is used to defluorinate the wastewater.

[0110] In addition, under certain special circumstances, the dried gas is discharged from the exhaust port of the dehydrator 31 to the vent pipe.

[0111] On the other hand, when the liquid level in the steam-water separator 11 reaches the threshold (measured by the level gauge 12), the liquid flows into the diaphragm water pump 21 through the drain outlet at the bottom of the steam-water separator 11; and then flows into the circulating water system through the drain outlet of the diaphragm water pump 21.

[0112] In summary, the condensate and argon recovery device for a deoxygenated precooler proposed in this application successfully achieves zero emissions from the precooler by recovering the water and entrained gas discharged from it, further reducing costs. Furthermore, the combined gas-water separation and chemical dehydration technology ensures zero argon emissions; the integrated pure water circulation system replaces external water supply, effectively reducing water treatment costs; and the skid-mounted modular design enhances the device's flexibility and ease of maintenance. All these factors contribute to reduced production costs and improved economic benefits.

[0113] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for system or system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and relevant parts can be referred to the descriptions in the method embodiments. The systems and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0114] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention.

[0115] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A condensate and argon recovery device for a deoxygenated precooler, characterized in that, The device includes: a gas-liquid separation module, a liquid collection module, and a gas collection module; The inlet of the gas-water separation module is connected to the deoxygenation precooler; The drain outlet of the gas-liquid separation module is connected to the inlet of the liquid collection module; The drain outlet of the liquid collection module is connected to the circulating water system; The exhaust port of the gas-water separation module is connected to the air inlet of the gas collection module; The exhaust port of the gas collection module is connected to the exhaust gas system; The gas collection module is filled with calcium chloride solid filler. The condensate from the deaerator precooler enters the gas-liquid separation module for gas-liquid separation. The separated gas is adsorbed and dried by calcium chloride solid packing in the gas collection module and discharged to the tail gas system. The liquid after gas-liquid separation flows into the circulating water system through the liquid collection module.

2. The apparatus according to claim 1, characterized in that, The gas-water separation module is specifically a gas-water separator; The deaerator precooler is connected to the inlet of the steam-water separator; The drain outlet of the gas-water separator is connected to the inlet of the liquid collection module via a valve; The exhaust port of the gas-water separator is connected to the air inlet of the gas collection module.

3. The apparatus according to claim 2, characterized in that, The drain outlet of the steam-water separator is located at the bottom of the steam-water separator; The exhaust port of the steam-water separator is located at the top of the steam-water separator.

4. The apparatus according to claim 2, characterized in that, The steam-water separator is equipped with a level gauge. The level gauge is used to measure the liquid level in the steam-water separator.

5. The apparatus according to claim 1, characterized in that, The liquid collection module is specifically a diaphragm water pump; The drain outlet of the gas-water separation module is connected to the inlet of the diaphragm water pump via a valve. The drain outlet of the diaphragm pump is connected to the circulating water system via a valve.

6. The apparatus according to claim 1, characterized in that, The gas collection module is specifically a dehydrator; The air inlet of the dehydrator is connected to the exhaust port of the air-water separation module via a valve; The exhaust port of the dehydrator is connected to the exhaust gas system via a valve; The calcium chloride solid packing in the dehydrator is used to dry the gas after gas-water separation by the gas-water separation module.

7. The apparatus according to claim 6, characterized in that, The dehydrator includes at least two tanks; The common end of the air inlet of the two tanks is connected to the exhaust port of the steam-water separator; The common end of the exhaust ports of the two tanks is connected to the exhaust gas system via a valve. The calcium chloride solid packing in each of the tanks is used for drying the gas.

8. The apparatus according to claim 1, characterized in that, The exhaust port of the gas collection module is connected to the vent pipe.

9. The apparatus according to claim 2, characterized in that, The tank of the gas-water separator is made of stainless steel.

10. The apparatus according to claim 7, characterized in that, The tank is made of polypropylene.

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