A system for unloading

Abstract

The utility model relates to the technical field of chemical industry provides an unloading system, it includes condensing separation tank and unloading buffer tank, condensing separation tank inside is equipped with refrigerant coil, top gas phase export is equipped, bottom liquid phase export is equipped, unloading buffer tank is equipped with liquid phase entry and gas phase entry, still include normally open power valve two. The utility model provides an unloading system, with the help of refrigerant coil cooling hot material of condensing separation tank, tank body inner chamber realizes gas liquid separation, through unloading buffer tank adaptation non - automatic unloading secondary separation and automatic unloading temporary storage buffer demand, utilize normally open power valve two regulation two jar pressure, realize stable unloading, solved the technical problem of system pressure instability in the process of unloading in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, specifically to a material unloading system. Background Technology

[0002] With the widespread application of catalytic materials in industry, environmental protection, and energy, their performance evaluation and development have become important research directions. Micro-packing reactors are widely used in catalytic material performance research due to their advantages such as flexible operation, low raw material consumption, low energy consumption, and low material requirements during the synthesis of novel catalytic materials.

[0003] However, microreactors have significant technical challenges: on the one hand, their small raw material consumption leads to high precision requirements for control, metering instruments, and operating accessories, making selection difficult; on the other hand, in long-cycle continuous experiments involving life assessment, the need for automatic discharge of liquid products is prominent, but traditional automatic liquid discharge systems use pneumatic regulating valves and level gauges to control the liquid level to achieve automatic unloading. Because the liquid feed volume of microreactors is extremely small, pneumatic regulating valves often face the problem of not having suitable models available.

[0004] Manual unloading is problematic because micro-reactors are often high-pressure systems. Direct unloading via manual valves can easily cause significant pressure fluctuations, which can disrupt the reaction process, lead to experimental interruption, or even data distortion. Therefore, there is an urgent need for a unloading system that can achieve fully automated unloading while maintaining stable system pressure during the unloading process, thus overcoming the current technical challenges. Utility Model Content

[0005] To overcome the above-mentioned defects, embodiments of this utility model provide a discharge system that solves the technical problem of unstable system pressure during the discharge process in the prior art.

[0006] According to one aspect, at least one embodiment of the present invention provides a discharge system, including a condensation separator and a discharge buffer tank; the input end of the condensation separator is connected to an upstream reactor to receive hot material, the condensation separator is provided with a refrigerant coil for cooling the material, the inner cavity of the condensation separator forms a gas-liquid separation space, and the condensation separator has a gas phase outlet at the top and a liquid phase outlet at the bottom; the discharge buffer tank has a liquid phase inlet and a gas phase inlet, the discharge buffer tank is used for secondary separation of the product processed by the condensation separator during non-automatic discharge, and for temporary storage and buffering of the liquid phase product during automatic discharge; it also includes a normally open power valve II, one end of which is connected to the gas phase outlet at the top of the condensation separator, and the other end is connected to the gas phase inlet of the discharge buffer tank, the normally open power valve II is used to adjust the pressure of the condensation separator and the discharge buffer tank.

[0007] For example, in a discharge system provided by at least one embodiment of the present invention, a normally open power valve is further included. One end of the normally open power valve is connected to the liquid phase outlet at the bottom of the condensation separator, and the other end is connected to the liquid phase inlet of the discharge buffer tank. The liquid phase product in the condensation separator flows into the discharge buffer tank through the normally open power valve by means of the liquid level difference.

[0008] For example, in at least one embodiment of the present invention, a discharge system further includes a level gauge and a pressure sensor. The level gauge is disposed on the tank body of the discharge buffer tank and is used to detect the liquid level height inside the discharge buffer tank. The pressure sensor is disposed on the tank body of the discharge buffer tank and is used to detect the pressure value inside the discharge buffer tank.

[0009] For example, in a discharge system provided by at least one embodiment of the present invention, a normally closed power valve II, a manually adjustable needle valve II, and a quencher are also included. One end of the normally closed power valve II is connected to the system venting pipe, and the other end is connected to the manually adjustable needle valve II and the quencher in sequence. The manually adjustable needle valve II is used to adjust the depressurization rate of the discharge buffer tank.

[0010] For example, in a discharge system provided by at least one embodiment of the present invention, a normally closed power valve and a manually adjustable needle valve are further included. One end of the normally closed power valve is connected to the bottom of the discharge buffer tank, and the other end is connected to the manually adjustable needle valve. The output end of the manually adjustable needle valve is connected to the system discharge pipeline. The manually adjustable needle valve is used to adjust the discharge rate of the liquid phase product.

[0011] For example, in a discharge system provided by at least one embodiment of the present invention, a normally closed power valve three and a manually adjustable needle valve three are further included. One end of the normally closed power valve three is connected to an external high-pressure gas source, and the other end is connected in sequence to the manually adjustable needle valve three and the gas phase inlet at the top of the discharge buffer tank. The manually adjustable needle valve three is used to adjust the high-pressure gas charging rate.

[0012] For example, in at least one embodiment of the present invention, a discharge system further includes a system pressure regulating valve and a mechanical pressure gauge. One end of the system pressure regulating valve is connected to the gas phase outlet at the top of the condensation separator, and the other end is connected to the system venting pipeline. The system pressure regulating valve is used to manually adjust the pressure of the gas phase product discharged from the condensation separator. The mechanical pressure gauge is installed in the same pipeline as the system pressure regulating valve and is used to display the system pressure after adjustment by the system pressure regulating valve in real time.

[0013] For example, in at least one embodiment of the present invention, a material unloading system is provided with fins on the outer peripheral wall of the refrigerant coil, and the fins are used to increase the contact area between the coil and the hot material.

[0014] For example, in a discharge system provided by at least one embodiment of the present invention, the fins are provided in a plurality of manner along the extension direction of the coil.

[0015] For example, in at least one embodiment of the present invention, the unloading system has a polygonal cross-section for the fins.

[0016] The beneficial effects of this utility model are as follows: In this invention, the refrigerant coil inside the condenser cools the hot material output from the upstream reactor. Combined with the gas-liquid separation space within the tank, this efficiently achieves liquefaction and gas-liquid separation of the hot material, ensuring effective recovery of condensable liquid products and meeting the basic requirements for product processing. The unloading buffer tank can simultaneously perform secondary product separation during non-automatic unloading and temporary storage and buffering of liquid products during automatic unloading, adapting to different unloading scenarios and improving the system's operational flexibility. The normally open power valve connects the gas phase channels of the condenser and the unloading buffer tank, regulating the pressure of both tanks and avoiding the system pressure fluctuation problems common in manual unloading or traditional automatic unloading methods. This ensures stable pressure during long-term continuous operation of the system, thereby ensuring that the reaction process is undisturbed and that experimental data is accurate and reliable, effectively compensating for the shortcomings of existing unloading systems. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of an unloading system in one embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional view of the condensation separator in the embodiment; Figure 3 for Figure 2 A top view of the refrigerant coil in the embodiment; Figure 4 for Figure 2 A partial structural diagram of the refrigerant coil in the embodiment.

[0019] In the diagram: 1. Condensation separator; 11. Refrigerant coil; 111. Fins; 2. Unloading buffer tank; 301. Normally open power valve one; 302. Normally open power valve two; 4. Level gauge; 5. Pressure sensor; 601. Normally closed power valve one; 602. Normally closed power valve two; 603. Normally closed power valve three; 701. Manual adjustment needle valve one; 702. Manual adjustment needle valve two; 703. Manual adjustment needle valve three; 8. System pressure regulating valve; 9. Mechanical pressure gauge; 10. Quencher; 100. System venting pipe one; 200. System venting pipe two; 300. External high-pressure gas source; 400. System drain pipe. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0021] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figure 1 The diagram illustrates a discharge system according to an embodiment of the present invention. The discharge system includes a condensation separator 1 and a discharge buffer tank 2. The input end of the condensation separator 1 is connected to an upstream reactor to receive hot material discharged from the upstream reactor. A refrigerant coil 11 is installed inside the condensation separator 1 to cool the hot material entering the condensation separator 1. A gas-liquid separation space is formed within the inner cavity of the condensation separator 1, where the hot material, after cooling, achieves gas-liquid separation. A gas phase outlet is provided at the top of the condensation separator 1, and a liquid phase outlet is provided at the bottom. The discharge buffer tank 2 is provided with a liquid phase inlet and a gas phase inlet. In the non-automatic discharge state, the discharge buffer tank 2 is used for secondary separation of the product processed by the condensation separator 1. In the automatic discharge state, the discharge buffer tank 2 is used to temporarily store and buffer the liquid phase product. The unloading system also includes a normally open power valve 302. One end of the normally open power valve 302 is connected to the gas phase outlet at the top of the condensation separator 1, and the other end is connected to the gas phase inlet of the unloading buffer tank 2. It is used to adjust the pressure of the condensation separator 1 and the unloading buffer tank 2.

[0027] In this example, the unloading system uses a condenser-separator 1 to cool the hot material and perform initial gas-liquid separation, and an unloading buffer tank 2 to perform secondary separation or temporary storage of the product. Pressure regulation and material conveying control are achieved through a combination of various valves. The workflow is as follows: The hot material discharged from the upstream reactor enters the condenser-separator 1, is cooled by the refrigerant coil 11, and then undergoes gas-liquid separation in the gas-liquid separation space within the tank's interior. The separated gas exits from the gas phase outlet at the top of the condenser-separator 1, with some of it being discharged outside the system. Simultaneously, it enters the gas phase inlet of the unloading buffer tank 2 through the normally open power valve 302, connecting the gas phase spaces of the two tanks to maintain pressure balance. The liquid product flows into the unloading buffer tank 2 through the normally open power valve 301 under the influence of the liquid level difference.

[0028] Specifically, the unloading system also includes a normally open power valve 301. One end of the normally open power valve 301 is connected to the liquid phase outlet at the bottom of the condensation separator 1, and the other end is connected to the liquid phase inlet of the unloading buffer tank 2. The liquid phase products in the condensation separator 1 flow into the unloading buffer tank 2 through the normally open power valve 301 due to the liquid level difference.

[0029] Normally open power valve 302 connects the gas phase outlet at the top of condensation separator 1 to the gas phase inlet of unloading buffer tank 2 and keeps it normally open, ensuring that the gas phase spaces of the two tanks are always connected. Pressure regulation is achieved through gas flow, ensuring that the pressure in the two tanks is consistent and preventing unstable flow of liquid products due to excessive pressure difference. Normally open power valve 301 connects the liquid phase outlet of condensation separator 1 to the liquid phase inlet of unloading buffer tank 2 and keeps it normally open, providing a stable flow channel for liquid products. The smooth transfer of liquid products is achieved by relying on the liquid level difference, without the need for an additional power unit, simplifying the system structure and reducing energy consumption. Combined with the pressure balance maintained by normally open power valve 302, it ensures stable system pressure during liquid phase transportation.

[0030] Furthermore, the unloading system also includes a level gauge 4 and a pressure sensor 5. The level gauge 4 is installed on the body of the unloading buffer tank 2 to detect the liquid level inside the tank. The pressure sensor 5 is installed on the body of the unloading buffer tank 2 to detect the pressure inside the tank. The level gauge 4 detects the liquid level in the unloading buffer tank 2 in real time, allowing the control system to determine whether to start the unloading procedure based on the liquid level. The pressure sensor 5 monitors the pressure changes inside the tank in real time. Combined with the pressure regulation function of the normally open power valve 302, it can promptly detect and adjust pressure anomalies. The two work together to provide parameter support for the system's automated control, improving the system's operational stability and reliability.

[0031] Furthermore, the unloading system also includes a normally closed power valve 602, a manually adjustable needle valve 702, and a quench cooler 10. One end of the normally closed power valve 602 is connected to the system vent pipe 200, and the other end is connected to the manually adjustable needle valve 702 and the quench cooler 10 in sequence. The manually adjustable needle valve 702 is used to adjust the pressure relief rate of the unloading buffer tank 2. The normally closed power valve 602, the manually adjustable needle valve 702, and the quench cooler 10 constitute the pressure relief circuit of the unloading buffer tank 2. The normally closed power valve 602 remains closed in the non-pressure relief state to ensure the system's sealing. The manually adjustable needle valve 702 adjusts the pressure relief rate to avoid excessively rapid pressure relief affecting the pressure balance of the two tanks. Combined with the pressure regulation function of the normally open power valve 302, it ensures stable system pressure during the pressure relief process. The quench cooler 10 cools the discharged gas phase to avoid safety hazards or environmental impacts.

[0032] Specifically, the unloading system also includes a normally closed power valve 601 and a manually adjustable needle valve 701. One end of the normally closed power valve 601 is connected to the bottom of the unloading buffer tank 2, and the other end is connected to the manually adjustable needle valve 701. The output end of the manually adjustable needle valve 701 is connected to the system drainage pipe 400. The manually adjustable needle valve 701 is used to adjust the liquid phase product discharge rate. The normally closed power valve 601 and the manually adjustable needle valve 701 constitute the liquid phase discharge circuit of the unloading buffer tank 2. The normally closed power valve 601 remains closed in the non-drainage state to prevent liquid phase leakage. The manually adjustable needle valve 701 adjusts the liquid phase discharge rate. Combined with the temporary storage and buffering function of the unloading buffer tank 2, this ensures stable system pressure during the unloading process and meets the unloading requirements.

[0033] Specifically, the unloading system also includes a normally closed power valve 603 and a manually adjustable needle valve 703. One end of the normally closed power valve 603 is connected to an external high-pressure gas source 300, and the other end is connected to the gas phase inlet of the unloading buffer tank 2 via the manually adjustable needle valve 703. The manually adjustable needle valve 703 is used to adjust the high-pressure gas charging rate. The normally closed power valve 603 and the manually adjustable needle valve 703 constitute the pressure replenishment circuit of the unloading buffer tank 2. The normally closed power valve 603 remains closed in the non-pressurized state to prevent the accidental entry of high-pressure gas. The manually adjustable needle valve 703 is used to adjust the high-pressure gas charging rate to avoid excessively rapid pressurization and disruption of pressure balance. Combined with the pressure regulation function of the normally open power valve 302, it ensures stable system pressure during pressurization, allowing the unloading buffer tank 2 to quickly and stably recover pressure after unloading, ensuring continuous system operation, and improving work efficiency and reliability.

[0034] During system operation, level gauge 4 and pressure sensor 5 detect the liquid level and pressure in unloading buffer tank 2 and feed them back to the control system. When the liquid level reaches the set value, the automatic unloading process is initiated: normally closed power valve 2 602 is opened, and the gas in the tank is discharged outside the system after being processed by quencher 10 following the pressure relief rate adjustment of manually adjusted needle valve 2 702; simultaneously, normally closed power valve 1 601 is opened, and the liquid phase products are discharged to the system drain pipe 400 after being discharged through manually adjusted needle valve 1 701 at the discharge rate. After unloading is completed, normally closed power valve 1 601 and normally closed power valve 2 602 are closed, and normally closed power valve 3 603 is opened. External high-pressure gas enters the unloading buffer tank 2 after being charged through manually adjusted needle valve 3 703 at the filling rate, restoring the pressure inside the tank to the same level as the condensation separator 1, thus completing one unloading cycle.

[0035] Furthermore, the unloading system also includes a system pressure regulating valve 8 and a mechanical pressure gauge 9. One end of the system pressure regulating valve 8 is connected to the gas phase outlet at the top of the condensation separator 1, and the other end is connected to the system venting pipe 100. The system pressure regulating valve 8 is used to manually adjust the pressure of the gas phase product discharged from the condensation separator 1. The mechanical pressure gauge 9 is installed in the same pipeline as the system pressure regulating valve 8 and is used to display the system pressure after adjustment by the system pressure regulating valve 8 in real time. The system pressure regulating valve 8 is connected to the gas phase outlet at the top of the condensation separator 1, and the gas phase product discharge pressure can be manually adjusted, thereby controlling the pressure inside the condensation separator 1. Combined with the pressure regulation function of the normally open power valve 302, the pressure of the two tanks is kept within a stable set range. The mechanical pressure gauge 9 is installed in the same pipeline as the system pressure regulating valve 8 and displays the adjusted system pressure in real time, providing operators with a direct reference for timely adjustment, enhancing the controllability of the system pressure, making the unloading system adaptable to different reaction conditions, and improving its applicability.

[0036] like Figures 2-4 As shown, fins 111 are provided on the outer peripheral wall of the refrigerant coil 11. The fins 111 are used to increase the contact area between the refrigerant coil 11 and the hot material. Multiple fins 111 are provided along the extension direction of the refrigerant coil 11, and the cross-section of the fins 111 is polygonal. The fins 111 on the outer peripheral wall of the refrigerant coil 11 increase the contact area with the hot material, and the multiple fins 111 arranged along the extension direction of the refrigerant coil 11 further increase the contact area and prolong the heat exchange time. In this example, the fins 111 are set as a rhomboid structure. The rhomboid structure has an alternating acute and obtuse angle profile, which can form a larger effective heat dissipation area under the same radial dimension. Its symmetrically distributed corners allow the contact area to spread evenly along the surface of the fins 111 when the hot material flows through them, avoiding local contact blind spots and increasing the effective heat exchange area.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A discharge system, characterized in that, The system includes a condenser (1) and a discharge buffer tank (2). The input end of the condenser (1) is connected to the upstream reactor to receive hot materials. The condenser (1) is equipped with a refrigerant coil (11) for cooling materials. The inner cavity of the condenser (1) forms a gas-liquid separation space. The condenser (1) has a gas phase outlet at the top and a liquid phase outlet at the bottom. The discharge buffer tank (2) has a liquid phase inlet and a gas phase inlet. The discharge buffer tank (2) is used for secondary separation of the product processed by the condenser (1) during non-automatic discharge and for temporary storage and buffering of the liquid phase product during automatic discharge. The system also includes a normally open power valve (302). One end of the normally open power valve (302) is connected to the gas phase outlet at the top of the condenser (1), and the other end is connected to the gas phase inlet of the discharge buffer tank (2). The normally open power valve (302) is used to adjust the pressure of the condenser (1) and the discharge buffer tank (2).

2. The unloading system according to claim 1, characterized in that, It also includes a normally open power valve (301), one end of which is connected to the liquid phase outlet at the bottom of the condensation separator (1), and the other end is connected to the liquid phase inlet of the unloading buffer tank (2); the liquid phase product in the condensation separator (1) flows into the unloading buffer tank (2) through the normally open power valve (301) by means of the liquid level difference.

3. The unloading system according to claim 2, characterized in that, It also includes a level gauge (4) and a pressure sensor (5). The level gauge (4) is installed on the tank body of the unloading buffer tank (2) and is used to detect the liquid level in the unloading buffer tank (2). The pressure sensor (5) is installed on the tank body of the unloading buffer tank (2) and is used to detect the pressure value in the unloading buffer tank (2).

4. The unloading system according to claim 3, characterized in that, It also includes a normally closed power valve 2 (602), a manually adjustable needle valve 2 (702), and a quencher (10). One end of the normally closed power valve 2 (602) is connected to the system venting pipe, and the other end is connected to the manually adjustable needle valve 2 (702) and the quencher (10) in sequence. The manually adjustable needle valve 2 (702) is used to adjust the depressurization rate of the unloading buffer tank (2).

5. The unloading system according to claim 4, characterized in that, It also includes a normally closed power valve (601) and a manually adjustable needle valve (701). One end of the normally closed power valve (601) is connected to the bottom of the unloading buffer tank (2), and the other end is connected to the manually adjustable needle valve (701). The output end of the manually adjustable needle valve (701) is connected to the system drain pipe. The manually adjustable needle valve (701) is used to adjust the discharge rate of the liquid phase product.

6. The unloading system according to claim 5, characterized in that, It also includes a normally closed power valve three (603) and a manually adjustable needle valve three (703). One end of the normally closed power valve three (603) is connected to an external high-pressure gas source, and the other end is connected to the manually adjustable needle valve three (703) and the gas phase inlet at the top of the unloading buffer tank (2) in sequence. The manually adjustable needle valve three (703) is used to adjust the high-pressure gas charging rate.

7. The unloading system according to claim 1, characterized in that, It also includes a system pressure regulating valve (8) and a mechanical pressure gauge (9). One end of the system pressure regulating valve (8) is connected to the gas phase outlet at the top of the condensation separator (1), and the other end is connected to the system venting pipeline. The system pressure regulating valve (8) is used to manually regulate the pressure of the gas phase products discharged from the condensation separator (1). The mechanical pressure gauge (9) and the system pressure regulating valve (8) are installed in the same pipeline and are used to display the system pressure after being regulated by the system pressure regulating valve (8) in real time.

8. The unloading system according to claim 1, characterized in that, The refrigerant coil (11) has fins (111) on its outer peripheral wall. The fins (111) are used to increase the contact area between the refrigerant coil (11) and the hot material.

9. A discharge system according to claim 8, characterized in that, The fins (111) are provided in multiple directions along the extension direction of the refrigerant coil (11).

10. A discharge system according to claim 9, characterized in that, The cross-section of the fin (111) is polygonal.

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