Ammonia removal device

Abstract

The ammonia removal device is provided with a sampling probe and an analysis device, a containing cavity, an air inlet and an air outlet are formed in the ammonia removal device, the air inlet is communicated with the containing cavity and the sampling probe, the air outlet is communicated with the containing cavity and the analysis device, and the ammonia removal device comprises an ammonia removal tank arranged in the containing cavity. The ammonia removal tank comprises an inlet and an outlet which are communicated with the interior, the air inlet is connected with the inlet, and the outlet is connected with the air outlet. Sample gas in the sampling probe enters the ammonia removal tank through the gas inlet and the inlet in sequence, solid phosphoric acid or other adsorbents can be arranged in the ammonia removal tank to achieve the effect of absorbing ammonia gas, the sample gas reaches the gas outlet from the outlet through the ammonia removal tank and is introduced into an analysis device communicated with the gas outlet, and the ammonia gas in the sample gas is removed. Through the arrangement, the analysis error of the analysis device on the sample gas is effectively reduced, and the detection precision of the CEMS system is improved. Moreover, the device is simple and clear in structure, the ammonia removal tank is relatively convenient to maintain and replace, and daily management and maintenance of equipment are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas analysis of CEMS, and particularly relates to an ammonia removal device. Background Art

[0002] CEMS is the abbreviation of Continuous Emission Monitoring System. It is a system used to monitor waste gas emissions in industrial production processes. It can monitor and record gas and particulate emission data from emission sources in real time. CEMS is mainly used to monitor the emission of atmospheric pollutants from industrial enterprises, including sulfur dioxide, nitrogen oxides, particulate matter, etc., to ensure that the enterprise's emissions meet environmental standards and regulatory requirements.

[0003] In the related technology, sampling probes are used to collect sample gas for analysis. However, some CEMS on-site flue gases contain a large amount of ammonia. If the ammonia is not removed before entering the analyzer, the ammonia will have a great impact on the measurement results of SO2 (a parameter measured by CEMS) in the sample gas. Utility Model Content

[0004] The technical purpose of the utility model is to provide an ammonia removal device, aiming to solve the problem that the mixed ammonia in the sample gas affects the analysis result.

[0005] In order to solve the above technical problems, the utility model is implemented as follows: an ammonia removal device is equipped with a sampling probe and an analysis device, and a accommodating chamber, an air inlet and an air outlet are formed inside the ammonia removal device, the air inlet connects the accommodating chamber and the sampling probe, and the air outlet connects the accommodating chamber and the analysis device. The ammonia removal device includes an ammonia removal tank arranged in the accommodating chamber, and the ammonia removal tank includes an inlet and an outlet connected to the interior, the air inlet is connected to the inlet, and the outlet is connected to the air outlet.

[0006] In some embodiments of the present invention, the ammonia removal device also includes an electrically controlled valve arranged in the accommodating chamber, and the electrically controlled valve includes a first valve port and a second valve port, the first valve port is connected to the air inlet, and the second valve port is connected to the inlet.

[0007] In some embodiments of the present utility model, the ammonia removal device further includes a backflush box disposed outside the accommodating chamber, the electric control valve further includes a third valve port, and the backflush port of the backflush box extends into the accommodating chamber and is connected to the third valve port;

[0008] A back-blow valve is provided between the air inlet and the air outlet. When the back-blow valve is opened, the air inlet is connected to the air outlet, and the air outlet is disconnected from the analysis device. When the back-blow valve is closed, the air inlet is disconnected from the air outlet, and the air outlet is connected to the analysis device.

[0009] In some embodiments of the present invention, a heating element is provided on the outer side of the ammonia tank.

[0010] In some embodiments of the utility model, a heat-insulating component is provided inside the ammonia removal device, the heat-insulating component encloses a heat-insulating cavity, and the ammonia removal tank is arranged in the heat-insulating cavity.

[0011] In some embodiments of the utility model, the ammonia removal device also includes a fixed bracket arranged in the insulation chamber, the fixed bracket is fixedly connected to the cavity wall of the insulation chamber, the fixed bracket limits the installation space, the ammonia removal tank is arranged in the installation space, and the inlet and the outlet extend out of the installation space.

[0012] In some embodiments of the utility model, the air inlet and the air outlet facing the outside of the accommodating cavity are both installed with heating pipes, each of the heating pipes is provided with a fastening assembly, a fastening space is provided around the inner side of the fastening assembly, and the fastening assembly has a movement direction for enlarging and reducing the fastening space.

[0013] Compared with the prior art, the ammonia removal device in the utility model has the following beneficial effects:

[0014] The utility model proposes an ammonia removal device, which is equipped with a sampling probe and an analysis device. A accommodating chamber, an air inlet and an air outlet are formed inside the ammonia removal device. The air inlet is connected to the accommodating chamber and the sampling probe, and the air outlet is connected to the accommodating chamber and the analysis device. The ammonia removal device includes an ammonia removal tank arranged in the accommodating chamber. The ammonia removal tank includes an inlet and an outlet connected to the interior. The air inlet is connected to the inlet, and the outlet is connected to the air outlet. The sample gas in the sampling probe enters the ammonia removal tank through the air inlet and the inlet in turn. Solid phosphoric acid or other adsorbents can be built into the ammonia removal tank to achieve the effect of absorbing ammonia. The sample gas passes through the ammonia removal tank from the outlet to the air outlet, and is passed into the analysis device connected to the air outlet to achieve the removal of ammonia in the sample gas. Ammonia will affect the measurement result of SO2 in the sample gas. Such a setting effectively reduces the analysis error of the analysis device on the sample gas and improves the detection accuracy of the CEMS system. In addition, the device structure is simple and clear, and the operations such as maintenance and replacement of the ammonia removal tank are relatively convenient, which is conducive to the daily management and maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a partial structural schematic diagram of an ammonia removal device in one embodiment of the utility model;

[0016] Figure 2 yes Figure 1 Side view of the ammonia removal unit.

[0017] In the accompanying drawings, each reference numeral represents:

[0018] 100. Ammonia removal device; 11. Accommodating chamber; 111. Air inlet; 112. Air outlet; 113. Insulation chamber; 12. Electric control valve; 121. First valve port; 122. Second valve port; 123. Third valve port; 13. Ammonia removal tank; 131. Inlet; 132. Outlet; 14. Backflush box; 15. Heating element; 16. Insulation element; 17. Fixed bracket; 18. Locking assembly; 19. Heat tracing pipe. DETAILED DESCRIPTION

[0019] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] Please refer to Figure 1 and Figure 2The utility model proposes an ammonia removal device 100, which is equipped with a sampling probe and an analysis device. A accommodating chamber 11, an air inlet 111 and an air outlet 112 are formed inside the ammonia removal device 100. The air inlet 111 connects the accommodating chamber 11 and the sampling probe, and the air outlet 112 connects the accommodating chamber 11 and the analysis device. The ammonia removal device 100 includes an ammonia removal tank 13 arranged in the accommodating chamber 11. The ammonia removal tank 13 includes an inlet 131 and an outlet 132 connected to the interior. The air inlet 111 is connected to the inlet 131, and the outlet 132 is connected to the air outlet 112.

[0023] The sample gas in the sampling probe enters the ammonia removal tank 13 through the air inlet 111 and the inlet 131 in turn. The ammonia removal tank 13 may be built with solid phosphoric acid or other adsorbents to absorb ammonia. The sample gas passes through the ammonia removal tank 13 and reaches the gas outlet 112 from the outlet 132, and is passed into the analysis device connected to the gas outlet 112 to achieve the removal of ammonia in the sample gas. Ammonia will affect the measurement results of SO2 in the sample gas. Such a setting effectively reduces the analysis error of the analysis device on the sample gas and improves the detection accuracy of the CEMS system. In addition, the device structure is simple and clear, and the maintenance and replacement of the ammonia removal tank 13 and other operations are relatively convenient, which is conducive to the daily management and maintenance of the equipment.

[0024] Please refer to Figure 2 Furthermore, the ammonia removal device 100 also includes an electrically controlled valve 12 disposed in the accommodating chamber 11, and the electrically controlled valve 12 includes a first valve port 121 and a second valve port 122, wherein the first valve port 121 is connected to the air inlet 111, and the second valve port 122 is connected to the inlet 131. The adsorbent in the ammonia removal tank 13 has a certain adsorption rate, and a large amount of gas enters the ammonia removal tank 13, and the ammonia in the sample gas cannot be completely removed. Through the setting of the electrically controlled valve 12, precise control of the inlet and outlet of ammonia can be achieved, and the opening and closing degree of the valve port can effectively control the rate at which ammonia enters and leaves, thereby improving the efficiency of the ammonia removal treatment and achieving the best ammonia removal effect.

[0025] At the same time, the electric control valve 12 can be integrated with other automation systems to realize automatic control of the ammonia treatment process, improve the convenience and stability of operation, and reduce manual intervention. Through the intelligent control of the electric control valve 12, energy consumption can be effectively reduced, energy utilization efficiency can be improved, it is beneficial to environmental protection and resource conservation, and potential safety hazards caused by ammonia leakage and other problems can be avoided to ensure the safety of equipment and operators.

[0026] Specifically, the electric control valve 12 can be a ball valve, which has a simple structure and can be fully opened or closed by rotating. It is easy to operate and can quickly realize the switch control of the fluid medium. It is flexible to rotate, has a large opening area, and has a larger fluid flux. The internal diameter of the ball valve is a spherical structure, the passage is unobstructed, and the resistance when the fluid passes through is small, which can reduce energy consumption and is suitable for occasions requiring small fluid resistance.

[0027] In this embodiment, in addition to the ammonia device 100, it also includes a backflush box 14 arranged outside the accommodating chamber 11, and the electric control valve 12 also includes a third valve port 123. The backflush port of the backflush box 14 extends into the accommodating chamber 11 and is connected to the third valve port 123. A backflush valve is provided between the air inlet 111 and the air outlet 112. When the backflush valve is opened, the air inlet 111 is connected to the air outlet 112, and the air outlet 112 is disconnected from the analysis device. When the backflush valve is closed, the air inlet 111 is disconnected from the air outlet 112, and the air outlet 112 is connected to the analysis device.

[0028] As the sampling probe continues to deliver oxygen to the ammonia removal tank 13, dirt will accumulate in the ammonia removal tank 13 and the communicating airway. A compressed air pump is provided in the backflush box 14, which inputs compressed air from the third valve port 123 to the ammonia removal tank 13 through the backflush port, driving the internal dirt from the ammonia removal tank 13 and the communicating airway to return to the flue of the sampling probe.

[0029] When the back-blow valve is opened, the air outlet 112 is disconnected from the analysis device, and the compressed air flows along the back-blow port, the third valve port 123, the first valve port 121, the inlet 131, the outlet 132, the air outlet 112, and the air inlet 111 in sequence, so that the compressed air will not enter the analysis device, and the analysis result of the subsequent sample gas entering the analysis device will not be affected by the compressed air, thereby effectively reducing the error of the analysis device.

[0030] When the backflush valve is closed, the air inlet 111 is disconnected from the air outlet 112, the backflush box is closed, and the compressed air output is stopped, so as to prevent the sample gas from returning to the sampling probe, maintain the concentration of the sample gas, and greatly enhance the accuracy of the analysis structure of the analysis device for the sample gas.

[0031] In order to speed up the ammonia removal efficiency and maintain the temperature of the sample gas, a heating element 15 is provided on the outer side of the ammonia removal tank 13. When the ammonia in the sample gas reacts with the adsorbent, increasing the temperature can effectively speed up the reaction rate and improve the ammonia removal efficiency of the ammonia removal device 100. At the same time, during the transportation and detection of the sample gas, if the gas pipeline or sampling line is in a low-temperature environment, the gas may condense due to the drop in temperature, causing water vapor or other components to condense in the pipeline, affecting the accuracy of the sample gas analysis. Heating can avoid gas condensation and ensure the stable transmission and analysis of the gaseous sample.

[0032] Furthermore, a heat preservation member 16 is provided inside the ammonia removal device 100, and the heat preservation member 16 encloses a heat preservation chamber 113, and the ammonia removal tank 13 is arranged in the heat preservation chamber 113. Heat preservation can keep the gas at a stable temperature during the sampling process, avoid the influence of temperature changes on the sampling results, and improve the accuracy and precision of sampling. Under harsh environmental conditions, such as low temperature and high humidity, heat preservation can effectively prevent the external environment from interfering with the gas sampling system, ensure the normal operation of the system and the reliability of the sampling results, extend the service life of the equipment, and reduce the frequency of maintenance and replacement.

[0033] In this embodiment, the ammonia removal device 100 further includes a fixed bracket 17 disposed in the heat preservation chamber 113, the fixed bracket 17 is fixedly connected to the cavity wall of the heat preservation chamber 113, the fixed bracket 17 limits the installation space, the ammonia removal tank 13 is disposed in the installation space, and the inlet 131 and the outlet 132 extend out of the installation space. The fixed bracket 17 is fixedly connected to the cavity wall of the heat preservation chamber 113, and can effectively support and fix the ammonia removal tank 13, maintain the stability of the adsorbent in the ammonia removal tank 13, and ensure the stability and safety of the ammonia removal device 100 during operation.

[0034] Please refer to Figure 1 Specifically, the fixing bracket 17 may include two cover plates arranged opposite to each other, the two cover plates enclose an installation space, a connecting frame is provided between the two cover plates, the connecting frame effectively prevents the ammonia removal tank 13 from being dislodged, and increases the connection stability of the ammonia removal tank 13 in the installation space, and the inlet 131 and the outlet 132 can extend out of the connecting frame, which is convenient for connection with the air inlet 111 and the air outlet 112, and the assembly is simple and the maintenance is convenient.

[0035] In order to improve the connection stability between the ammonia removal device 100 and the sampling probe and the analysis device, the air inlet 111 and the air outlet 112 facing the outside of the accommodating chamber 11 are installed with heating pipes 19, and each heating pipe 19 is provided with a fastening component, and a fastening space is provided on the inner side of the fastening component. The fastening component has a movement direction of enlarging and reducing the fastening space.

[0036] The heating pipe 19 has the same function as the heating element 15, and is used to maintain the temperature of the gas entering and exiting the sampling probe and the analysis device to avoid condensation due to excessively low temperature. The fastening assembly provided on the heating pipe 19 can be used to fasten the sampling probe and the analysis device. When the sampling probe and the analysis device are not assembled with the ammonia removal device 100, the fastening space of the fastening assembly can be adjusted to the maximum, so that the air inlet 111 and the air outlet 112 are connected to the sampling probe and the analysis device respectively. When the assembly is completed, the fastening assembly reduces the fastening space, so that the sampling probe and the analysis device are fastened to the ammonia removal device 100, thereby improving the connection stability and transmission efficiency of the ammonia removal device 100 in receiving and outputting sample gas.

[0037] In some embodiments, the fastening assembly may include a clamp and a screw assembly, and the fastening space of the clamp may be adjusted by tightening the screw assembly, or a sliding sleeve may be used, which is not limited here.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ammonia removal device equipped with a sampling probe and an analysis device, characterized in that: The ammonia removal device has a accommodating chamber, an air inlet and an air outlet formed inside. The air inlet connects the accommodating chamber and the sampling probe, and the air outlet connects the accommodating chamber and the analyzing device. The ammonia removal device includes an ammonia removal tank arranged in the accommodating chamber, and the ammonia removal tank includes an inlet and an outlet connected to the interior. The air inlet is connected to the inlet, and the outlet is connected to the air outlet.

2. The ammonia removal device according to claim 1, characterized in that: The ammonia removal device also includes an electrically controlled valve disposed in the accommodating chamber, wherein the electrically controlled valve includes a first valve port and a second valve port, wherein the first valve port is connected to the air inlet, and the second valve port is connected to the inlet.

3. The ammonia removal device according to claim 2, characterized in that: The ammonia removal device further includes a backflush box disposed outside the accommodating chamber, and the electrically controlled valve further includes a third valve port, the backflush port of the backflush box extending into the accommodating chamber and connected to the third valve port; A back-blow valve is provided between the air inlet and the air outlet. When the back-blow valve is opened, the air inlet is connected to the air outlet, and the air outlet is disconnected from the analysis device. When the back-blow valve is closed, the air inlet is disconnected from the air outlet, and the air outlet is connected to the analysis device.

4. The ammonia removal device according to claim 1, characterized in that: A heating element is arranged on the outer side of the ammonia tank.

5. The ammonia removal device according to claim 4, characterized in that: A heat-insulating component is arranged inside the ammonia removal device, and the heat-insulating component is enclosed to form a heat-insulating cavity, and the ammonia removal tank is arranged in the heat-insulating cavity.

6. The ammonia removal device according to claim 5, characterized in that: The ammonia removal device also includes a fixed bracket arranged in the insulation chamber, the fixed bracket is fixedly connected to the cavity wall of the insulation chamber, the fixed bracket limits the installation space, the ammonia removal tank is arranged in the installation space, and the inlet and the outlet extend out of the installation space.

7. The ammonia removal device according to claim 1, characterized in that: The air inlet and the air outlet facing the outside of the accommodating cavity are both installed with heating pipes, and each of the heating pipes is provided with a fastening component, and a fastening space is provided inside the fastening component. The fastening component has a movement direction for enlarging and reducing the fastening space.

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