Precursor crude product receiving system

Abstract

This invention provides a precursor crude product receiving system, including a coolant container, a receiving tank, a circulation pipeline, a circulation pump, a chiller, and a flow guiding structure. The coolant container includes an inlet, an outlet, and a receiving tank. The receiving tank is located within the receiving tank. The circulation pipeline is connected to the inlet and outlet. The circulation pump and chiller are located within the circulation pipeline, and the flow guiding structure is located within the coolant container and along the coolant's flow path. This invention, using a circulating coolant in conjunction with a chiller, achieves precise control of the cooling temperature. The refrigeration temperature can be adjusted according to the needs of different condensation stages, preventing the precursor vapor from rapidly agglomerating into large clumps due to excessively low temperatures, thus improving the purity of the final product. Guided by the flow guiding structure, the coolant flows along a pre-set tortuous path, eliminating dead zones and ensuring a uniform and stable cooling temperature distribution throughout the receiving tank.

Description

Technical Field

[0001] This utility model belongs to the field of precursor preparation technology, specifically relating to a precursor crude product receiving system. Background Technology

[0002] Precursors such as trimethylindium are widely used in high-end manufacturing fields such as epitaxial growth of semiconductor materials. Currently, the industry generally uses liquid nitrogen cooling to receive crude precursor materials. Specifically, the receiving container is placed in a liquid nitrogen environment, and the extremely low temperature of liquid nitrogen is used to rapidly condense the precursor vapor, thereby obtaining a solid crude precursor material.

[0003] However, in actual production, the above-mentioned liquid nitrogen cooling method has been found to have the following shortcomings:

[0004] First, liquid nitrogen cooling is a rapid cooling process, with the surface temperature of the receiving container consistently maintained at around -196°C. This makes it impossible to adjust the cooling temperature in stages or gradually according to the actual needs of different stages of condensation, such as the initial, middle, and final stages. As a result, the precursor vapor condenses and agglomerates rapidly within a very short time, forming large clumps. These large clumps not only increase the difficulty of subsequent grinding and purification but also easily trap impurities, adversely affecting the purity of the final product.

[0005] Secondly, liquid nitrogen requires continuous replenishment, and its storage, transportation, and use all involve significant energy consumption, leading to a substantial increase in production costs over long-term operation. Furthermore, liquid nitrogen has an extremely low temperature and is highly volatile; contact with liquid nitrogen can easily cause frostbite for operators. The nitrogen gas produced by evaporation also occupies space, reducing the surrounding oxygen content and posing a risk of asphyxiation due to oxygen deficiency.

[0006] Furthermore, the evaporation rate of liquid nitrogen is significantly affected by factors such as ambient temperature and pressure, leading to fluctuations in the surface temperature of the receiving container and uneven condensation of the precursor vapor. Some of the uncondensed precursor vapor will escape into the environment, resulting in material waste. Utility Model Content

[0007] The purpose of this invention is to provide a precursor crude product receiving system to solve the problem that using liquid nitrogen to cool the precursor material crude product will affect the purity of the final product.

[0008] To achieve the above objectives, a specific embodiment of this utility model provides a precursor crude product receiving system. The precursor crude product receiving system includes a coolant container, a receiving tank, a circulation pipeline, a circulation pump, a chiller, and a flow guiding structure. The coolant container contains coolant and includes an inlet, an outlet, and a receiving tank. The receiving tank is located within the receiving tank and is used to receive the precursor material crude product. The circulation pipeline is connected to the inlet and outlet. The circulation pump and chiller are located within the circulation pipeline. The flow guiding structure is located within the coolant container and along the coolant's flow path. An outlet is formed between the flow guiding structure and the inner surface of the coolant container. The flow guiding structure can block the coolant and guide it to the outlet, allowing the coolant to flow along a predetermined tortuous path between the inlet and outlet.

[0009] In one or more embodiments of this utility model, the inlet and outlet are located on the top wall of the coolant container and are arranged on both sides of the receiving tank along the radial direction of the coolant container. The coolant container includes an inner cylinder wall and an outer cylinder wall surrounding the inner cylinder wall. The inner cylinder wall encloses and forms a receiving groove, and a flow guiding structure is provided on the inner cylinder wall and / or the outer cylinder wall.

[0010] In one or more embodiments of this utility model, the flow guiding structure includes a first flow guiding plate disposed on the inner cylinder wall and a second flow guiding plate disposed on the outer cylinder wall.

[0011] In one or more embodiments of this utility model, the first guide plate and the second guide plate are alternately arranged along the axial direction of the coolant container.

[0012] In one or more embodiments of this utility model, the first guide plate is perpendicular to the axial direction of the coolant container.

[0013] In one or more embodiments of this utility model, the second guide plate is perpendicular to the axial direction of the coolant container.

[0014] In one or more embodiments of this utility model, the coolant container includes a first bottom wall disposed at the bottom of the inner cylinder wall and a second bottom wall disposed at the bottom of the outer cylinder wall and located below the first bottom wall. The coolant container is provided with a first baffle and a second baffle. The first baffle and the second baffle divide the inner cavity of the coolant container into a first chamber and a second chamber arranged circumferentially and connected to each other. The inlet is connected to the first chamber and the outlet is connected to the second chamber.

[0015] In one or more embodiments of this utility model, the flow guiding structure is disposed on the first bottom wall and / or the second bottom wall.

[0016] In one or more embodiments of this utility model, the flow guiding structure includes a third flow guiding plate disposed on the first bottom wall and a fourth flow guiding plate disposed on the second bottom wall.

[0017] In one or more embodiments of this utility model, the third guide plate and the fourth guide plate are alternately arranged along the radial direction of the coolant container.

[0018] In one or more embodiments of this utility model, the third guide plate and the fourth guide plate are inclined and parallel to each other, with the third guide plate inclined toward the direction close to the liquid inlet or liquid outlet.

[0019] In one or more embodiments of this utility model, the outer cylinder wall is provided with several layers of heat insulation.

[0020] In one or more embodiments of this utility model, the second bottom wall is provided with several layers of heat insulation.

[0021] In one or more embodiments of this utility model, the precursor crude product receiving system further includes a first temperature sensor, a second temperature sensor, and a temperature controller. The first temperature sensor and the second temperature sensor are disposed on the inner surface of the top wall of the coolant container. The first temperature sensor is disposed near the liquid inlet, and the second temperature sensor is disposed near the liquid outlet. The temperature controller is electrically connected to the first temperature sensor, the second temperature sensor, and the refrigeration unit.

[0022] Compared with existing technologies, this invention uses a circulating coolant in conjunction with a refrigeration unit to replace the traditional liquid nitrogen quenching, achieving precise control of the cooling temperature. The refrigeration temperature can be adjusted according to the needs of different condensation stages, avoiding the rapid agglomeration of precursor vapors into large clumps due to excessively low temperatures, thereby reducing the difficulty of subsequent purification and improving the purity of the final product.

[0023] Furthermore, the coolant, driven by the circulating pump and cooled by the refrigeration unit, enters the coolant container and flows along a preset tortuous path under the guidance of the flow guide structure. This flow guide structure forces the coolant to repeatedly zigzag and circulate around the outer periphery of the receiving tank, effectively eliminating the phenomenon of dead flow angles and ensuring that all parts of the receiving tank obtain a uniform and stable cooling temperature distribution. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the precursor crude product receiving system in one embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the coolant container in one embodiment of the present invention;

[0027] Figure 3 This is a plan view of the coolant container in one embodiment of the present invention.

[0028] Key reference numerals in the attached drawings: 1. Coolant container; 101. Inlet; 102. Outlet; 103. Receiving tank; 104. Flow port; 105. First chamber; 106. Second chamber; 107. Top wall; 108. Inner cylinder wall; 109. Outer cylinder wall; 110. First bottom wall; 111. Second bottom wall; 2. Receiving tank; 3. Circulation pipeline; 4. Circulation pump; 5. Refrigeration unit; 6. Flow guiding structure; 61. First guide plate; 62. Second guide plate; 63. Third guide plate; 64. Fourth guide plate; 7. First baffle; 8. Second baffle; 9. First temperature sensor; 10. Second temperature sensor; 11. Insulation layer. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0030] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the term "first" is 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, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In one embodiment, reference is made to Figure 1 and Figure 2As shown, this utility model provides a precursor crude product receiving system, including a coolant container 1, a receiving tank 2, a circulation pipeline 3, a circulation pump 4, a chiller 5, and a flow guiding structure 6. The coolant container 1 has an internal cavity filled with coolant. The coolant container 1 includes an inlet 101, an outlet 102, and a receiving tank 103. The inlet 101 and outlet 102 are connected to the inner cavity of the coolant container 1. The receiving tank 103 is formed on the outside of the coolant container 1, and its opening is located on the top wall 107 of the coolant container 1. The receiving tank 2 is located inside the receiving tank 103 and is connected to the precursor material crude product conveying pipeline to receive the gaseous precursor material crude product. The circulation pump 4 and the chiller 5 are connected in series on the circulation pipeline 3, with both ends of the circulation pipeline 3 connected to the inlet 101 and the outlet 102, respectively. The flow guiding structure 6 is disposed inside the coolant container 1 and is located on the flow path of the coolant. An outlet 104 is formed between the flow guiding structure 6 and the inner surface of the coolant container 1. The flow guiding structure 6 can block the coolant and guide the coolant to the outlet 104, so that the coolant flows along a preset tortuous path between the inlet 101 and the outlet 102. The preset tortuous path is a meandering maze-like path.

[0033] According to the above structural design, after being cooled by the refrigeration unit 5, the coolant enters the inner cavity of the coolant container 1 through the inlet 101 under the drive of the circulating pump 4, creating a low-temperature environment inside the coolant container 1. This cools the receiving tank 2, causing the crude gaseous precursor material in the receiving tank 2 to gradually condense into crude solid-phase precursor material. During the flow of the coolant inside the coolant container 1, under the obstruction and guidance of the flow guiding structure 6, the coolant cannot flow directly from the inlet 101 to the outlet 102. Instead, it is forced to change its flow direction along the flow passage 104 formed between the flow guiding structure 6 and the inner wall, flowing along a preset tortuous path. It repeatedly turns back and forth within the coolant container 1 and flows around the receiving tank 103, allowing the coolant to flow through different areas of the coolant container 1 sequentially. This significantly reduces dead zones in the flow within the coolant container 1, ensuring that the coolant container 1 uniformly cools all parts of the receiving tank 2, and preventing the agglomeration and clumping of the gaseous precursor due to excessively high or low local temperatures in the receiving tank 2.

[0034] In one embodiment, reference is made to Figure 1 and Figure 2As shown, the inlet 101 and outlet 102 are located on the top wall 107 of the coolant container 1 and are arranged radially along both sides of the receiving tank 2, so that the coolant enters from one side of the coolant container 1 and flows out from the other side, forming a flow path across the receiving tank 2. The coolant container 1 includes an inner cylinder wall 108 and an outer cylinder wall 109 surrounding the inner cylinder wall 108. The inner cylinder wall 108 forms a receiving groove 103. The flow guiding structure 6 is disposed between the inner cylinder wall 108 and the outer cylinder wall 109, guiding the coolant to flow back and forth between the inner cylinder wall 108 and the outer cylinder wall 109, thereby extending the contact path between the coolant and the inner cylinder wall 108 and improving the heat exchange uniformity of the coolant container 1.

[0035] Furthermore, referring to Figure 2 As shown, the flow guiding structure 6 includes a first flow guiding plate 61 and a second flow guiding plate 62, which are arranged at intervals along the axial direction of the coolant container 1. The first flow guiding plate 61 and the second flow guiding plate 62 are constructed as annular plates. The first flow guiding plate 61 is disposed on the inner cylinder wall 108, and the outer diameter of the first flow guiding plate 61 is smaller than the inner diameter of the outer cylinder wall 109. A flow guiding port is formed between the edge of the first flow guiding plate 61 away from the inner cylinder wall 108 and the outer cylinder wall 109. The second flow guiding plate 62 is disposed on the outer cylinder wall 109, and the inner diameter of the second flow guiding plate 62 is larger than the outer diameter of the inner cylinder wall 108. A flow guiding port is formed between the edge of the second flow guiding plate 62 away from the outer cylinder wall 109 and the inner cylinder wall 108. When the coolant flows in the coolant container 1, it is forced to flow towards the outer cylinder wall 109 after being blocked by the first guide plate 61, and it is forced to flow towards the inner cylinder wall 108 after being blocked by the second guide plate 62. This process is repeated, so that the coolant flows in an S-shaped or wavy path between the inner cylinder wall 108 and the outer cylinder wall 109, which greatly improves the heat exchange efficiency and temperature distribution uniformity between the coolant container 1 and the receiving tank 2.

[0036] Furthermore, referring to Figure 2 As shown, the first guide plate 61 and the second guide plate 62 are alternately arranged along the axial direction of the coolant container 1, so that the coolant is alternately blocked by the first guide plate 61 and the second guide plate 62 during the flow process, thereby repeatedly changing the flow direction between the inner cylinder wall 108 and the outer cylinder wall 109.

[0037] Furthermore, the first guide plate 61 is parallel to the second guide plate 62, and the first guide plate 61 is perpendicular to the axial direction of the coolant container 1. The second guide plate 62 is also perpendicular to the axial direction of the coolant container 1, and the first and second guide plates 61 and 62 are approximately parallel to the horizontal plane. Compared to setting the first and second guide plates 61 and 62 to an upward or downward inclined structure, setting the guide plates to a structure parallel to the horizontal plane allows the coolant to form a clear radial deflection when blocked by the first and second guide plates 61 and 62, avoiding uncertain flow direction or local turbulence caused by the tilt angle. At the same time, the first and second guide plates 61 and 62 can uniformly cut off the flow of the entire annular cross section, forcing the coolant to flow through each guide port sequentially with approximately the same flow velocity and stroke, thereby forming a stable and predictable wavy path in the axial direction.

[0038] In other embodiments, depending on actual cooling requirements and processing costs, only the first guide plate 61 or the second guide plate 62 may be selected. This single-sided guide structure 6 can also extend the flow path of the coolant and reduce dead zones.

[0039] In one embodiment, reference is made to Figure 2 As shown, the coolant container 1 also includes a first bottom wall 110 and a second bottom wall 111. The first bottom wall 110 is located at the bottom of the inner cylinder wall 108, and the second bottom wall 111 is located at the bottom of the outer cylinder wall 109. The first bottom wall 110 is located above the second bottom wall 111, and a flow channel for coolant flow is formed between the first bottom wall 110 and the second bottom wall 111. The coolant container 1 is provided with a first baffle 7 and a second baffle 8. The first baffle 7 and the second baffle 8 are generally parallel to the axial direction of the coolant container 1. The first baffle 7 and the second baffle 8 are arranged on both sides of the inner cylinder wall 108 approximately along the circumference of the coolant container 1, thereby dividing the inner cavity of the coolant container 1 into a first chamber 105 and a second chamber 106 arranged along its circumference. The inlet 101 communicates with the first chamber 105, and the outlet 102 communicates with the second chamber 106. The first baffle 7 and the second baffle 8 are connected to the inner cylinder wall 108 and the outer cylinder wall 109 on both sides, respectively. The top of the first baffle 7 and the top of the second baffle 8 are both connected to the top wall 107 of the coolant container 1. The bottom of the first baffle 7 and the bottom of the second baffle 8 are both connected to the second bottom wall 111 through the gap. The first chamber 105 and the second chamber 106 can be connected through the gap.

[0040] After the coolant enters the first chamber 105 through the inlet 101, due to the presence of the first baffle 7 and the second baffle 8, the coolant cannot flow directly to the outlet 102 along the circumference of the coolant container 1. The coolant can only flow downwards first, into the gap between the bottom of the first baffle 7 and the bottom of the second baffle 8 and the second bottom wall 111, and then bypass the first baffle 7 and the second baffle 8 through this gap before flowing into the second chamber 106. Finally, it flows upwards in the second chamber 106 and flows out from the outlet 102. The coolant forms a roughly U-shaped preset tortuous path to avoid the problem of the coolant circulating only in the top area of ​​the coolant container 1 as much as possible.

[0041] Furthermore, referring to Figure 2 As shown, the flow guiding structure 6 is provided on the first bottom wall 110 and the second bottom wall 111. After the coolant enters the flow channel between the first bottom wall 110 and the second bottom wall 111, it can reciprocate between the first bottom wall 110 and the second bottom wall 111, thereby extending the flow path of the coolant in the flow channel and preventing the coolant from directly passing through the flow channel laterally, ensuring that the bottom of the receiving tank 2 receives sufficient and uniform cooling.

[0042] Furthermore, referring to Figure 1 and Figure 2 As shown, the flow guiding structure 6 includes a third flow guiding plate 63 and a fourth flow guiding plate 64. The third flow guiding plate 63 is disposed on the inner surface of the first bottom wall 110, and the fourth flow guiding plate 64 is disposed on the inner surface of the second bottom wall 111. The third flow guiding plate 63 and the fourth flow guiding plate 64 are arranged at radial intervals along the coolant container 1.

[0043] Furthermore, referring to Figure 2 As shown, the third guide plate 63 and the fourth guide plate 64 are alternately arranged along the radial direction of the coolant container 1, so that the coolant is alternately blocked by the third guide plate 63 and the fourth guide plate 64 during the flow process, thereby repeatedly changing the flow direction between the first bottom wall 110 and the second bottom wall 111.

[0044] Furthermore, referring to Figure 2 As shown, the third guide plate 63 and the fourth guide plate 64 are parallel to each other. The third guide plate 63 is inclined and tilted towards the liquid inlet 101, while the fourth guide plate 64 is inclined and tilted towards the liquid outlet 102. Normally, the gap between the first bottom wall 110 and the second bottom wall 111 is small to avoid stratification of the coolant due to gravity in this gap. Therefore, to maximize the flow path and heat exchange contact time of the coolant in this gap, the third guide plate 63 and the fourth guide plate 64 are inclined, thereby ensuring uniform and sufficient cooling of the bottom area of ​​the receiving tank 2.

[0045] In other embodiments, the tilting directions of the third guide plate 63 and the fourth guide plate 64 may be opposite to the above tilting directions, that is, the third guide plate 63 is tilted towards the direction closer to the liquid outlet 102, and the fourth guide plate 64 is tilted towards the direction closer to the liquid inlet 101.

[0046] In other embodiments, depending on actual cooling requirements and processing costs, only the third guide plate 63 or the fourth guide plate 64 may be selected. This single-sided guide structure 6 can also extend the flow path of the coolant and reduce dead zones.

[0047] In other embodiments, the flow guiding structure 6 can also be configured as a structure similar to a flow guide plate, such as a wave-shaped or sawtooth protrusion directly machined into the inner wall of the coolant container 1. These structures can also prevent the coolant from passing directly through the coolant container 1 along the shortest path, forcing the coolant to change its flow direction multiple times along a predetermined direction, extending the flow path and reducing dead zones, thereby achieving uniform cooling of the surface of the receiving tank 2.

[0048] In one embodiment, reference is made to Figure 1 As shown, the outer surfaces of the outer cylinder wall 109 and the second bottom wall 111 are provided with a thermal insulation layer 11. The thermal insulation layer 11 is made of thermal insulation material, including but not limited to polyurethane foam, polystyrene foam, aerogel felt, glass wool, rock wool, aluminum silicate fiber felt, and vacuum insulation board. After setting the thermal insulation layer 11, the heat exchange between the coolant and the external environment can be reduced, thus reducing the loss of cooling capacity.

[0049] Furthermore, the insulation layer 11 can be configured with one, two, three or more layers. The specific number of layers can be flexibly adjusted according to the temperature conditions of the actual use environment, the required cold insulation performance and cost control requirements, so as to meet the heat insulation needs under different working conditions.

[0050] In one embodiment, reference is made to Figure 1 and Figure 2 As shown, the precursor crude product receiving system also includes a first temperature sensor 9, a second temperature sensor 10, and a temperature controller. The first temperature sensor 9 and the second temperature sensor 10 are located on the inner surface of the top wall 107 of the coolant container 1. The first temperature sensor 9 is located near the inlet 101, and the second temperature sensor 10 is located near the outlet 102. The temperature controller is electrically connected to the first temperature sensor 9, the second temperature sensor 10, and the refrigeration unit 5. The temperature controller can determine the temperature rise of the coolant before and after flowing through the receiving tank 2 and the current heat load based on the temperature difference or actual temperature value detected by the first temperature sensor 9 and the second temperature sensor 10. This allows the controller to adjust the refrigeration temperature of the refrigeration unit 5, stabilizing the coolant temperature at the inlet 101 and the outlet 102 within the set target range, thus avoiding uneven condensation or energy waste due to over- or under-cooling.

[0051] Furthermore, the first temperature sensor 9 includes, but is not limited to, a thermocouple temperature sensor, a platinum resistance temperature sensor, and a thermistor temperature sensor. Similarly, the second temperature sensor 10 includes, but is not limited to, a thermocouple temperature sensor, a platinum resistance temperature sensor, and a thermistor temperature sensor.

[0052] Furthermore, a pressure detector and a control valve are installed on the circulation pipeline 3. The pressure detector can monitor the coolant pressure in the pipeline in real time, and the temperature controller can adjust the speed of the circulation pump 4 or the opening of the control valve according to the pressure feedback to maintain the stability of coolant flow and pressure and prevent system failure due to pipeline blockage or pump abnormality.

[0053] In one embodiment, the coolant is selected as a cooling medium that can remain liquid, does not solidify, and does not significantly volatilize within the temperature range of -80°C to 0°C, and the coolant generally does not chemically react with precursors such as trimethylindium. Coolants include, but are not limited to, perfluoropolyether compounds, electronic fluorinated fluids, organosilicon compounds, or low-freezing-point hydrocarbon heat transfer oils. Those skilled in the art can rationally select from the above types according to actual operating conditions and cost, and can also use combinations to meet the requirements of low-temperature stability, low volatility, and non-corrosiveness to precursor materials.

[0054] The above is a general description of the precursor crude product receiving system of this utility model. The following is a further introduction to its specific usage process.

[0055] In practical use, the operator first places the receiving tank 2 into the receiving trough 103 at the top of the coolant container 1, and connects the receiving tank 2 to the precursor material crude product conveying pipeline. Then, the circulation pump 4 and the chiller 5 are started, causing the coolant to circulate between the circulation pipeline 3 and the coolant container 1. After the coolant is cooled to the set temperature (e.g., -60℃ to -30℃) by the chiller 5, it enters the first chamber 105 of the coolant container 1 through the inlet 101. Under the alternating guidance of the first guide plate 61 and the second guide plate 62 of the flow guiding structure 6, the coolant flows downward along the wavy path between the inner cylinder wall 108 and the outer cylinder wall 109.

[0056] As the coolant flows through the flow channel between the first bottom wall 110 and the second bottom wall 111, it is guided by the inclination of the third guide plate 63 and the fourth guide plate 64, then flows back, bypassing the first baffle 7 and the second baffle 8, and enters the second chamber 106. Finally, it flows back to the circulation pipeline 3 from the outlet 102. During this process, the receiving tank 2 is uniformly cooled, and the crude gaseous precursor material inside it gradually condenses into a solid crude product.

[0057] In addition, during the above operation, the first temperature sensor 9 and the second temperature sensor 10 can monitor the coolant temperature at the inlet 101 and outlet 102 in real time. The temperature controller can adjust the cooling power of the refrigerator 5 according to the temperature difference between the coolant at the inlet 101 and outlet 102 to keep the cooling temperature stable.

[0058] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precursor crude product receiving system, characterized by, The precursor crude product receiving system includes: A coolant container (1) contains coolant inside, and the coolant container (1) includes an inlet (101), an outlet (102), and a receiving tank (103). A receiving tank (2) is disposed in the receiving tank (103), and the receiving tank (2) is used to receive crude precursor material; The circulation pipeline (3) is connected to the liquid inlet (101) and the liquid outlet (102); A circulation pump (4) is installed in the circulation pipeline (3); A refrigeration unit (5) is installed in the circulation pipeline (3); A flow guiding structure (6) is disposed inside the coolant container (1) and located on the flow path of the coolant. An outlet (104) is formed between the flow guiding structure (6) and the inner surface of the coolant container (1). The flow guiding structure (6) can block the coolant and guide the coolant to the outlet (104) so ​​that the coolant flows along a preset tortuous path between the inlet (101) and the outlet (102).

2. The precursor crude receiving system of claim 1, wherein, The inlet (101) and outlet (102) are located on the top wall of the coolant container (1) and are arranged on both sides of the receiving tank (2) along the radial direction of the coolant container (1). The coolant container (1) includes an inner cylinder wall (108) and an outer cylinder wall (109) surrounding the inner cylinder wall (108). The inner cylinder wall (108) forms a receiving groove (103). The flow guiding structure (6) is provided on the inner cylinder wall (108) and / or the outer cylinder wall (109).

3. The precursor crude receiving system of claim 2, wherein, The flow guiding structure (6) includes a first flow guiding plate (61) disposed on the inner cylinder wall (108) and a second flow guiding plate (62) disposed on the outer cylinder wall (109).

4. The precursor crude product receiving system according to claim 3, characterized in that, The first guide vane (61) and the second guide vane (62) are alternately arranged along the axial direction of the coolant container (1); and / or, The first guide vane (61) is perpendicular to the axial direction of the coolant container (1); and / or, The second guide plate (62) is perpendicular to the axial direction of the coolant container (1).

5. The precursor crude product receiving system according to claim 2, characterized in that, The coolant container (1) includes a first bottom wall (110) located at the bottom of the inner cylinder wall (108) and a second bottom wall (111) located at the bottom of the outer cylinder wall (109) and below the first bottom wall (110). The coolant container (1) is provided with a first baffle (7) and a second baffle (8). The first baffle (7) and the second baffle (8) divide the inner cavity of the coolant container (1) into a first chamber (105) and a second chamber (106) arranged circumferentially and connected to each other. The inlet (101) is connected to the first chamber (105) and the outlet (102) is connected to the second chamber (106).

6. The precursor crude product receiving system according to claim 5, characterized in that, The flow guiding structure (6) is disposed on the first bottom wall (110) and / or the second bottom wall (111).

7. The precursor crude product receiving system according to claim 6, characterized in that, The flow guiding structure (6) includes a third flow guiding plate (63) disposed on the first bottom wall (110) and a fourth flow guiding plate (64) disposed on the second bottom wall (111).

8. The precursor crude product receiving system according to claim 7, characterized in that, The third guide plate (63) and the fourth guide plate (64) are arranged alternately along the radial direction of the coolant container (1).

9. The precursor crude product receiving system according to claim 8, characterized in that, The third guide plate (63) and the fourth guide plate (64) are inclined and parallel to each other, and the third guide plate (63) is inclined toward the direction of the liquid inlet (101) or the liquid outlet (102).

10. The precursor crude product receiving system according to claim 5, characterized in that, The outer cylinder wall (109) is provided with several layers of insulation (11); and / or, The second bottom wall (111) is provided with several layers of insulation (11); and / or, The precursor crude product receiving system further includes a first temperature sensor (9), a second temperature sensor (10), and a temperature controller. The first temperature sensor (9) and the second temperature sensor (10) are disposed on the inner surface of the top wall of the coolant container (1). The first temperature sensor (9) is disposed near the inlet (101), and the second temperature sensor (10) is disposed near the outlet (102). The temperature controller is electrically connected to the first temperature sensor (9), the second temperature sensor (10), and the refrigeration unit (5).

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