Laboratory tail gas treatment device

Abstract

The invention provides a laboratory tail gas treatment device, which comprises: a reaction tank having a liquid ammonia storage area, a sublimation area and a reaction area which are sequentially arranged from bottom to top in a direction perpendicular to the ground; the dry ice feeding system is communicated with the reaction area through a first inlet formed in the side wall of the reaction tank and is used for introducing dry ice into the reaction area; the pressure control system comprises a pressure sensor which is arranged at the top of the reaction area of the reaction tank and is used for collecting pressure data in the reaction tank in real time, and the automatic pressure regulating device comprises an automatic pressure regulating valve which is in communication connection with the pressure sensor; the cyclone shunting device is communicated with the reaction tank through a second outlet formed in the side wall of the reaction tank and is used for separating solid particles and gaseous components in the reaction product; and the tail gas capturing system is connected with the cyclone shunting device through a gas outlet of the cyclone shunting device, and is used for treating separated gaseous components, reducing the concentration of residual ammonia gas and purifying tail gas emission.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection, and in particular to a laboratory tail gas treatment device. Background Art

[0002] During chemical experiments or process research, laboratories usually emit tail gas containing trace amounts of harmful gases, such as ammonia and hydrogen sulfide. If these tail gas components are discharged directly without treatment, they may cause serious harm to the atmospheric environment and human health. At present, laboratory tail gas treatment technologies mainly include adsorption, catalytic oxidation, wet scrubbing, etc., but these methods still have some obvious limitations:

[0003] Low reaction efficiency: Existing devices lack precise control over key parameters such as temperature, pressure, and reactant ratio during the treatment process, resulting in low reaction efficiency and difficulty in fully treating some harmful gases.

[0004] High energy consumption of equipment: For example, catalytic oxidation method requires high temperature conditions, high energy consumption, high operating costs, and is not suitable for small-scale laboratory applications.

[0005] Poor product separation effect: The existing technology has limited separation ability for solid particles and gaseous components in the reaction products, which can easily lead to low product purity and affect the subsequent processing effect.

[0006] Incomplete exhaust gas purification: The exhaust gas treatment device is not effective in removing residual harmful gases, especially volatile components such as ammonia, and cannot meet strict environmental emission standards.

[0007] In view of the above problems, the development of an efficient, accurate and energy-saving small tail gas treatment device has become an urgent need for tail gas treatment in laboratory environments. The present invention designs a new tail gas treatment device based on the reaction of liquid ammonia and dry ice. By integrating multifunctional modules such as sublimation, reaction, separation and tail gas purification, it can achieve efficient treatment and standard emission of laboratory tail gas. Summary of the invention

[0008] In a first aspect of the present disclosure, a laboratory tail gas treatment device is provided, the device comprising:

[0009] The reaction tank comprises a liquid ammonia storage area, a sublimation area and a reaction area which are arranged in sequence from bottom to top in a direction perpendicular to the ground, wherein the liquid ammonia storage area is used to store liquid ammonia and is connected to the sublimation area through a first outlet arranged at the top thereof, the sublimation area is provided with a heating system for sublimating liquid ammonia into gaseous ammonia, and the reaction area comprises a stirring device for forming a mixed reaction between dry ice and the sublimated gaseous ammonia;

[0010] A dry ice feeding system, connected to the reaction zone through a first inlet provided on the side wall of the reaction tank, for introducing dry ice into the reaction zone;

[0011] A cyclone flow separation device is connected to the reaction tank through a second outlet arranged on the side wall of the reaction tank, and is used to separate solid particles and gaseous components in the reaction product;

[0012] A pressure control system, the pressure control system comprising:

[0013] The pressure sensor is installed on the top of the reaction zone of the reaction tank to collect the pressure data inside the reaction tank in real time.

[0014] An automatic pressure regulating device, comprising an automatic pressure regulating valve, the automatic pressure regulating valve is communicatively connected to the pressure sensor, an inlet of the automatic pressure regulating valve is connected to the second outlet, and an outlet is connected to the first inlet, and is used to dynamically adjust the feed flow rate of gaseous ammonia according to a feedback signal of the pressure sensor to achieve pressure balance;

[0015] The tail gas capture system is connected to the gas outlet of the cyclone diversion device and is used to process the separated gaseous components, reduce the residual ammonia concentration and purify the tail gas emissions.

[0016] In combination with the first aspect, the reaction zone of the reaction tank is provided with a mechanical stirring device, which is connected to an external driving system to improve the reaction efficiency of dry ice and gaseous ammonia and shorten the reaction time.

[0017] In combination with the first aspect, the heating system includes an integrated temperature control module, which adjusts the temperature of the sublimation zone through a temperature control feedback mechanism to ensure that liquid ammonia is sublimated into gaseous ammonia.

[0018] In combination with the first aspect, the automatic pressure regulating valve of the pressure control system has a multi-stage regulating function for dynamically adjusting the feed ratio of gaseous ammonia to dry ice.

[0019] In combination with the first aspect, the cyclone flow separation device comprises:

[0020] A solid separation unit, which separates solid particles in the reaction product through the centrifugal separation principle and discharges the solid particles through a solid outlet;

[0021] The gas separation unit is connected to the tail gas capture system to process the separated gaseous components, so that the ammonia concentration in the tail gas is reduced to below 10ppm.

[0022] In combination with the first aspect, it is characterized in that the tail gas capture system comprises:

[0023] Multi-stage filtration module, used to remove trace impurities in gaseous products;

[0024] Adsorption unit, using chemical adsorbent to absorb residual ammonia;

[0025] The safe emission unit monitors the exhaust gas through the gas concentration detection device and discharges it only after it meets the emission standards.

[0026] In combination with the first aspect, the outer wall material of the liquid ammonia storage area includes polyether urethane and has an insulation layer to ensure the temperature stability of the liquid ammonia during storage.

[0027] In combination with the first aspect, the device also includes an integrated control platform, which communicates data with the pressure sensor, the stirring device and the automatic pressure regulating device through a data acquisition and processing module to achieve intelligent monitoring and control of the entire reaction process.

[0028] Beneficial effects: The laboratory tail gas treatment device of the present invention realizes efficient coordinated processing of liquid ammonia sublimation, dry ice mixing reaction, solid and gas separation and tail gas purification through modular design. It can not only accurately control the temperature, pressure and reactant ratio in the reaction process, thereby improving the reaction efficiency and product purity, but also realizes efficient separation of solid particles and gaseous components in the reaction products through the cyclone diversion device, simplifying the subsequent processing flow. At the same time, the pressure control system integrated in the device can monitor and dynamically adjust the reaction pressure in real time to ensure the stability and reliability of the system operation. In addition, the tail gas capture system effectively reduces the residual ammonia concentration in the tail gas to below 10ppm through multi-stage filtration and adsorption units, ensuring that the exhaust gas meets the standards, and has the advantages of high processing efficiency, low energy consumption, safety and reliability, and is particularly suitable for tail gas treatment needs in laboratory environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a laboratory exhaust gas treatment device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure.

[0031] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "said" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0032] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the disclosed embodiments, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0033] like Figure 1 FIG. 1 is a schematic diagram of the structure of a laboratory tail gas treatment device according to an embodiment of the present disclosure, comprising:

[0034] The reaction tank 110 comprises a liquid ammonia storage area 111, a sublimation area 112 and a reaction area 113 which are arranged in sequence from bottom to top in a direction perpendicular to the ground. The liquid ammonia storage area 111 is used to store liquid ammonia and is connected to the sublimation area 112 through a first outlet 1111 arranged at the top thereof. The sublimation area 112 is provided with a heating system (not shown) for sublimating liquid ammonia into gaseous ammonia. The reaction area 113 comprises a stirring device for forming a mixed reaction between dry ice and the sublimated gaseous ammonia.

[0035] A dry ice feeding system 120, connected to the reaction zone via a first inlet 121 provided on the side wall of the reaction tank, for introducing dry ice into the reaction zone;

[0036] The cyclone flow separation device 130 is connected to the reaction tank through a second outlet 131 arranged on the side wall of the reaction tank, and is used to separate solid particles and gaseous components in the reaction product;

[0037] A pressure control system (not shown), the pressure control system comprising:

[0038] A pressure sensor (not shown) is installed on the top of the reaction zone of the reaction tank to collect real-time pressure data inside the reaction tank.

[0039] An automatic pressure regulating device (not shown), comprising an automatic pressure regulating valve 140, the automatic pressure regulating valve 140 is communicatively connected to the pressure sensor, the inlet of the automatic pressure regulating valve 140 is connected to the second outlet 131, and the outlet is connected to the first inlet 121, and is used to dynamically adjust the feed flow rate of gaseous ammonia according to the feedback signal of the pressure sensor to achieve pressure balance;

[0040] The tail gas capture system (not shown) is connected to the cyclone splitter through its gas outlet and is used to process the separated gaseous components, reduce the residual ammonia concentration and purify the tail gas emissions.

[0041] Specifically, the reaction tank is the core of the device, and adopts a vertical partition design, with liquid ammonia storage area 111, sublimation area 112 and reaction area 113 respectively arranged from bottom to top, with clear functions and independent of each other:

[0042] Liquid ammonia storage area 111: used to store liquid ammonia, with a first outlet 1111 on the top, connected to the sublimation area 112, to ensure that the liquid ammonia can be smoothly transported to the sublimation area. The outer wall material of the liquid ammonia storage area can be made of polyether urethane with high insulation performance, and is designed with an insulation layer to reduce the volatilization loss of liquid ammonia and maintain temperature stability.

[0043] Sublimation zone 112: Liquid ammonia is heated by an integrated heating system (not shown) to rapidly sublime into gaseous ammonia. The temperature control system in the sublimation zone can provide real-time feedback and adjust the heating power to ensure the yield and purity of ammonia.

[0044] Reaction zone 113: A stirring device is provided to fully mix and react the sublimated gaseous ammonia with the dry ice input from the dry ice feeding system 120. Mechanical stirring can improve the contact efficiency, promote the full progress of the reaction, and shorten the reaction time.

[0045] Dry ice feeding system 120: The dry ice feeding system is connected to the reaction zone 113 through the first inlet 121 on the side wall of the reaction tank, and can accurately control the supply of dry ice. Its function is to provide low-temperature cooling conditions for the reaction and participate in the mixing reaction with gaseous ammonia. The feeding system can use an automatic control device to dynamically adjust the feeding speed of dry ice according to the reaction requirements.

[0046] Cyclone flow divider 130: The cyclone flow divider is connected to the reaction tank through the second outlet 131 on the side wall of the reaction tank, and is used to efficiently separate solid particles and gaseous components in the reaction product. Its internal design uses the principle of centrifugal separation to separate and discharge heavier solid particles from the reaction product, while the lighter gaseous components flow into the tail gas capture system through its gas outlet. This device effectively simplifies the subsequent processing steps of the product and improves the separation accuracy and efficiency.

[0047] Pressure control system: This system is designed to monitor and adjust the pressure in the reaction tank in real time to ensure the stability and safety of the reaction process:

[0048] Pressure sensor (not shown): installed in the reaction zone 113 on the top of the reaction tank, used to collect real-time internal pressure data and provide accurate feedback.

[0049] The automatic pressure regulating device includes an automatic pressure regulating valve 140 which is in communication with the pressure sensor, the inlet of the automatic pressure regulating valve 140 is connected to the second outlet 131, and the outlet is connected to the first inlet 121. The pressure regulating device can automatically adjust the feed flow rate of gaseous ammonia according to the feedback signal of the sensor, maintain the reaction pressure balance, and prevent excessively high or low pressure from affecting the reaction efficiency and safety.

[0050] Tail gas capture system: connected to the cyclone splitter through its gas outlet, used to further process the separated gaseous components. The specific functions of the system are as follows:

[0051] Trace impurities are removed through multi-stage filtration modules to ensure the purity of exhaust gas.

[0052] The adsorption unit of the chemical adsorbent is used to effectively absorb the residual ammonia and reduce the ammonia concentration in the tail gas to below 10ppm.

[0053] Equipped with a safe emission unit, combined with gas concentration detection equipment, to ensure that exhaust gas is not allowed to be discharged until it meets the standards, in order to comply with environmental regulations.

[0054] Beneficial effects: The various parts of the device form a complete and efficient tail gas treatment system through reasonable structural connection and seamless functional coordination. From the storage and sublimation of liquid ammonia to the separation of reaction products and the purification of tail gas, the device realizes the independence and coordination of functions through modular design. Through integrated and automated design, it reduces the intervention of manual operation and improves work efficiency and safety. At the same time, its modular structure is easy to maintain and upgrade, and has broad application prospects.

[0055] Furthermore, the reaction zone of the reaction tank is provided with a mechanical stirring device, which is connected to an external driving system to improve the reaction efficiency of dry ice and gaseous ammonia and shorten the reaction time.

[0056] Specifically, the mechanical stirring device is powered by an external driving system (such as an electric motor or a servo motor) and is used to strongly stir the dry ice and gaseous ammonia in the reaction zone so that the two are fully in contact and evenly mixed, thereby accelerating the chemical reaction.

[0057] The specific form of the stirring device can be a blade type, anchor type or turbine type agitator, which is selected according to the physical properties of the reactants.

[0058] The stirring speed can be adjusted to suit different reaction conditions (such as changes in reaction rate and reactant concentration).

[0059] The design of the mechanical stirring device can also include an intelligent control module to automatically adjust the stirring speed according to parameters such as reaction temperature, pressure, and material concentration, thereby improving reaction efficiency and avoiding local overheating or material deposition. The uniform mixing achieved through stirring can also reduce the probability of by-product generation and improve the purity of the reaction product.

[0060] Furthermore, the heating system includes an integrated temperature control module, which adjusts the temperature of the sublimation zone through a temperature control feedback mechanism to ensure that liquid ammonia is sublimated into gaseous ammonia.

[0061] Specifically, the integrated temperature control module is the core device of the sublimation area, which has a high-precision temperature control function and ensures that liquid ammonia is sublimated into gaseous ammonia within the optimal temperature range through a real-time temperature control feedback mechanism.

[0062] The temperature control module can adjust the temperature of the sublimation zone through a heating element (such as a heating wire or a heat-conducting fluid).

[0063] The feedback mechanism relies on temperature sensors to collect the real-time temperature of the sublimation zone and dynamically adjusts it through the control system to avoid excessively high temperatures that lead to loss of liquid ammonia or excessively low temperatures that lead to incomplete sublimation.

[0064] The temperature control module can also be linked with the pressure sensor to form a temperature and pressure joint control mechanism. For example, in a low-pressure environment, the temperature requirement can be appropriately reduced to reduce energy consumption. In addition, the design of the module can adopt a modular structure to facilitate system maintenance and expansion.

[0065] Furthermore, the automatic pressure regulating valve of the pressure control system has a multi-stage regulating function for dynamically adjusting the feed ratio of gaseous ammonia and dry ice.

[0066] Specifically, the automatic pressure regulating valve can control the feed flow rate of gaseous ammonia in stages, thereby dynamically adjusting the feed ratio of gaseous ammonia to dry ice according to the reaction requirements, ensuring that the reaction pressure is always within the optimal range.

[0067] The multi-stage adjustment function means that the pressure regulating valve can be adjusted in stages according to the preset pressure range, such as low flow, medium flow and high flow.

[0068] Through real-time pressure monitoring feedback, the control accuracy of the regulating valve is high, which can avoid reduced reaction efficiency or safety hazards caused by pressure fluctuations.

[0069] The multi-stage function of the pressure regulating valve can also be combined with the flow meter of the material supply system to form a more accurate feed ratio control. Especially under dynamic conditions, the ratio of gaseous ammonia to dry ice can be automatically optimized through program settings, thereby achieving economical utilization of reactants.

[0070] Furthermore, the cyclone flow separation device comprises:

[0071] A solid separation unit, which separates solid particles in the reaction product through the centrifugal separation principle and discharges the solid particles through a solid outlet;

[0072] The gas separation unit is connected to the tail gas capture system to process the separated gaseous components, so that the ammonia concentration in the tail gas is reduced to below 10ppm.

[0073] Specifically, the solid separation unit uses the centrifugal separation principle to separate solid particles (such as reaction by-products) in the reaction products and discharge them out of the device through the solid outlet.

[0074] Gas separation unit: Treat the separated gaseous components to ensure that the ammonia concentration in the tail gas is reduced to below 10ppm.

[0075] Centrifugal separation uses the centrifugal force generated by high-speed rotation to cause heavier solid particles to settle to the solid outlet.

[0076] Gas separation further screens and purifies gas components, providing good preconditions for subsequent tail gas capture and storage system treatment.

[0077] The gas separation unit can be integrated with multi-stage filtration and particle capture devices to remove ultrafine particles and trace impurities. In addition, the solid separation unit combined with the automatic cleaning function can avoid the accumulation of solid particles in the device and reduce the maintenance cost of the equipment.

[0078] Furthermore, the tail gas capture system comprises:

[0079] Multi-stage filtration module, used to remove trace impurities in gaseous products;

[0080] Adsorption unit, using chemical adsorbent to absorb residual ammonia;

[0081] The safe emission unit monitors the exhaust gas through the gas concentration detection device and discharges it only after it meets the emission standards.

[0082] Specifically, the multi-stage filtration module uses multiple layers of physical or chemical filtration materials to gradually remove trace impurities in the exhaust gas.

[0083] Adsorption unit: Use high-efficiency chemical adsorbents (such as activated carbon or molecular sieves) to absorb residual ammonia in the tail gas.

[0084] Safety emission unit: Combined with the gas concentration detection device, it ensures that the exhaust gas is discharged only after it meets the standards to prevent environmental pollution.

[0085] The multi-stage filtration module can set up special filtration layers for different impurities (such as dust and ammonia) to further improve the purification effect. The chemical adsorbent of the adsorption unit has high capacity and high selectivity, can operate efficiently for a long time, and reduce operating costs. The safe emission unit works in conjunction with the concentration detection equipment, and the exhaust gas concentration meets international environmental protection standards (such as below 10ppm).

[0086] The tail gas capture system can also be integrated with other emission treatment equipment (such as wet scrubbers, SCR systems) to further enhance the efficiency of ammonia capture. In addition, the adsorption unit can be designed in a regenerative mode, using high temperature or vacuum desorption to regenerate the adsorbent and extend its service life.

[0087] Furthermore, the outer wall material of the liquid ammonia storage area includes polyether urethane and has an insulation layer to ensure the temperature stability of the liquid ammonia during storage.

[0088] Specifically, the liquid ammonia storage area adopts polyether urethane material, which has excellent low temperature resistance and mechanical strength, and the outer layer is designed with an insulation layer to reduce heat transfer and liquid ammonia volatilization loss.

[0089] The insulation layer can maintain the low-temperature storage state of liquid ammonia under the condition of large ambient temperature difference, avoiding the sublimation or waste of liquid ammonia due to temperature rise. The high strength characteristics of polyether urethane enable the storage area to maintain structural stability while bearing internal pressure.

[0090] The insulation layer can also be designed with multi-layer composite materials, combined with vacuum insulation or reflective film to further enhance the thermal insulation effect. The liquid ammonia storage area can be equipped with a liquid level sensor to achieve real-time monitoring of the liquid ammonia storage amount.

[0091] Furthermore, the device also includes an integrated control platform, which communicates data with the pressure sensor, the stirring device and the automatic pressure regulating device through a data acquisition and processing module to achieve intelligent monitoring and precise control of the entire reaction process.

[0092] Specifically, the integrated control platform connects the pressure sensor, stirring device and automatic pressure regulating device through the data acquisition and processing module to achieve intelligent monitoring and precise control of the entire reaction process.

[0093] The control platform can monitor the equipment operating status (such as pressure, temperature, material concentration, etc.) in real time and dynamically optimize the reaction conditions through algorithms. The data acquisition module can store historical operating data for easy analysis and troubleshooting.

[0094] The control platform can be remotely monitored and operated through a network interface, supporting cloud data analysis and predictive maintenance. For example, when abnormal pressure or temperature is detected, the system can automatically alarm and take emergency measures to further improve safety and reliability.

[0095] The laboratory tail gas treatment device of the present invention realizes efficient coordinated processing of liquid ammonia sublimation, dry ice mixing reaction, solid and gas separation and tail gas purification through modular design, which can not only accurately control the temperature, pressure and reactant ratio in the reaction process, thereby improving the reaction efficiency and product purity, but also realizes efficient separation of solid particles and gaseous components in the reaction product through the cyclone diversion device, simplifying the subsequent processing flow. At the same time, the pressure control system integrated with the device can monitor and dynamically adjust the reaction pressure in real time to ensure the stability and reliability of the system operation. In addition, the tail gas capture system effectively reduces the residual ammonia concentration in the tail gas to less than 10ppm through multi-stage filtration and adsorption units, ensuring that the exhaust gas meets the standards, and has the advantages of high processing efficiency, low energy consumption, safety and reliability, and is particularly suitable for tail gas treatment needs in laboratory environments.

[0096] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present disclosure. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0097] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0098] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

[0099] In the embodiments provided in the present disclosure, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation. Multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0100] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0101] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0102] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present disclosure implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. The computer program may include computer program code, and the computer program code may be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electric carrier signals and telecommunication signals.

[0103] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should all be included in the protection scope of the present disclosure.

Claims

1. A laboratory tail gas treatment device, characterized in that: The device comprises: The reaction tank comprises a liquid ammonia storage area, a sublimation area and a reaction area which are arranged in sequence from bottom to top in a direction perpendicular to the ground, wherein the liquid ammonia storage area is used to store liquid ammonia and is connected to the sublimation area through a first outlet arranged at the top thereof, the sublimation area is provided with a heating system for sublimating liquid ammonia into gaseous ammonia, and the reaction area comprises a stirring device for forming a mixed reaction between dry ice and the sublimated gaseous ammonia; A dry ice feeding system, connected to the reaction zone through a first inlet provided on the side wall of the reaction tank, for introducing dry ice into the reaction zone; A cyclone flow separation device is connected to the reaction tank through a second outlet arranged on the side wall of the reaction tank, and is used to separate solid particles and gaseous components in the reaction product; A pressure control system, the pressure control system comprising: The pressure sensor is installed on the top of the reaction zone of the reaction tank to collect the pressure data inside the reaction tank in real time. An automatic pressure regulating device, comprising an automatic pressure regulating valve, the automatic pressure regulating valve is communicatively connected to the pressure sensor, an inlet of the automatic pressure regulating valve is connected to the second outlet, and an outlet is connected to the first inlet, and is used to dynamically adjust the feed flow rate of gaseous ammonia according to a feedback signal of the pressure sensor to achieve pressure balance; The tail gas capture system is connected to the gas outlet of the cyclone diversion device and is used to process the separated gaseous components, reduce the residual ammonia concentration and purify the tail gas emissions.

2. The device according to claim 1, characterized in that The reaction zone of the reaction tank is provided with a mechanical stirring device, which is connected to an external driving system and is used to improve the reaction efficiency of dry ice and gaseous ammonia and shorten the reaction time.

3. The device according to claim 1, characterized in that The heating system includes an integrated temperature control module, which adjusts the temperature of the sublimation zone through a temperature control feedback mechanism to ensure that liquid ammonia is sublimated into gaseous ammonia.

4. The device according to claim 1, characterized in that The automatic pressure regulating valve of the pressure control system has a multi-stage regulating function and is used to dynamically adjust the feed ratio of gaseous ammonia to dry ice.

5. The device according to claim 1, characterized in that The cyclone flow separation device comprises: A solid separation unit, which separates solid particles in the reaction product through the centrifugal separation principle and discharges the solid particles through a solid outlet; The gas separation unit is connected to the tail gas capture system to process the separated gaseous components, so that the ammonia concentration in the tail gas is reduced to below 10ppm.

6. The device according to claim 1, characterized in that: The tail gas capture system comprises: Multi-stage filtration module, used to remove trace impurities in gaseous products; Adsorption unit, using chemical adsorbent to absorb residual ammonia; The safe emission unit monitors the exhaust gas through the gas concentration detection device and discharges it only after it meets the emission standards.

7. The device according to claim 1, characterized in that The outer wall material of the liquid ammonia storage area includes polyether urethane and has a heat insulation layer to ensure the temperature stability of the liquid ammonia during storage.

8. The device according to claim 1, characterized in that The device also includes an integrated control platform, which communicates data with the pressure sensor, the stirring device and the automatic pressure regulating device through a data acquisition and processing module to achieve intelligent monitoring and control of the entire reaction process.

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