Comprehensive treatment system for oxynitride waste gas

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a comprehensive treatment system for oxynitride waste gas, which comprises a waste gas collecting device, a pretreatment unit, a catalytic reduction reaction unit, a post-treatment unit, a control unit, a waste gas emission monitoring device and a safety protection device, by integrating a waste gas collecting device, a pretreatment unit, a catalytic reduction reaction unit, a post-treatment unit, a control unit, a waste gas emission monitoring device and a safety protection device, the emission amount of oxynitride can be effectively reduced, the harm to the environment and human health is reduced, and by adopting an advanced catalytic reduction technology, the environmental pollution is reduced. The system can convert oxynitride into harmless nitrogen and water vapor, so that the requirements of environmental protection standards are met, emission of oxynitride can be effectively controlled, and the system has the advantages of being easy and convenient to operate, low in cost, safe and reliable and has good application prospects and popularization value.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a comprehensive treatment system for nitrogen oxide waste gas. Background Technology

[0002] With the rapid development of industry, the emission of nitrogen oxides (NOx) is increasing day by day, posing a serious threat to the environment and human health.

[0003] Traditional methods for treating nitrogen oxides include selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR), but these technologies suffer from high costs, complex operations, and difficulties in treating byproducts. They cannot effectively reduce nitrogen oxide emissions, increase harm to the environment and human health, and fail to meet environmental protection standards.

[0004] Therefore, we propose a comprehensive treatment system for nitrogen oxide waste gas. Utility Model Content

[0005] The present invention aims to solve the technical problems existing in the prior art and provide a comprehensive treatment system for nitrogen oxide waste gas.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a comprehensive treatment system for nitrogen oxide waste gas, comprising a waste gas collection device, a pretreatment unit, a catalytic reduction reaction unit, a post-treatment unit, a control unit, a waste gas emission monitoring device, and a safety protection device. The waste gas collection device is responsible for collecting the waste gas containing nitrogen oxides emitted from the factory and then transporting it to the pretreatment unit. The pretreatment unit is used to remove particulate matter and harmful substances from the waste gas to ensure that the gas entering the catalytic reduction reaction unit meets certain purification standards. The pretreatment unit includes a preheater, a filter, and an adsorber.

[0007] Preferably, the preheater is used to heat the exhaust gas to a suitable reaction temperature, the filter is responsible for intercepting solid particles in the exhaust gas, and the adsorber removes harmful gas components in the exhaust gas through a specific adsorption material.

[0008] Preferably, the catalytic reduction reaction unit uses a catalyst to convert nitrogen oxides into harmless nitrogen gas and water vapor, and the catalytic reduction reaction unit includes a reactor and a temperature and pressure control module.

[0009] Preferably, the reactor is filled with a precious metal catalyst, such as platinum or palladium. In the reactor, the pretreated waste gas is mixed with a reducing agent (such as ammonia or hydrogen) and a reduction reaction occurs under the action of the catalyst. The temperature and pressure control module ensures that the reaction conditions are always at the optimal level, ensuring the high efficiency of the reaction.

[0010] Preferably, the post-treatment unit further treats the exhaust gas generated by the catalytic reduction reaction unit to ensure that the emitted gas fully complies with environmental protection standards. The post-treatment unit includes a scrubbing tower, a desulfurization tower, and a denitrification tower.

[0011] Preferably, the scrubbing tower is used to remove acidic gases from the exhaust gas, the desulfurization tower is specifically used to remove sulfides, and the denitrification tower further reduces the nitrogen oxide content in the exhaust gas.

[0012] Preferably, the control unit is responsible for monitoring and regulating the operation of the entire system to ensure that all units work together to achieve the best exhaust gas treatment effect. The control unit includes a sensor module, a controller, and an actuator.

[0013] Preferably, the sensor module is used to monitor key parameters in the system in real time, such as temperature, pressure, and gas concentration. The controller analyzes and makes decisions based on the data provided by the sensor, and the actuator adjusts the working state of each unit according to the controller's instructions.

[0014] Preferably, the exhaust gas emission monitoring device is used to monitor the composition and concentration of the emitted gas in real time to ensure that the emitted gas meets national environmental protection standards.

[0015] Preferably, the exhaust gas emission monitoring device includes a gas analyzer and an emission monitor.

[0016] Preferably, the gas analyzer is used to analyze gas composition, and the emission monitor is used to monitor gas emission concentration.

[0017] Preferably, the safety protection device is used to ensure the safe and stable operation of the entire system and prevent accidents from occurring.

[0018] Preferably, the safety protection device includes an emergency shutdown system, a leak detection system, and a fire protection system.

[0019] Preferably, the emergency shutdown system can immediately cut off the power supply and stop the equipment from operating when an abnormal situation is detected.

[0020] Preferably, the leak detection system is used to monitor in real time whether there is a gas leak in the system.

[0021] Preferably, the fire protection system is used to prevent fire accidents caused by high temperature or chemical reaction.

[0022] This utility model provides a comprehensive treatment system for nitrogen oxide waste gas. It has the following beneficial effects:

[0023] 1. This comprehensive nitrogen oxide waste gas treatment system integrates a waste gas collection device, a pretreatment unit, a catalytic reduction reaction unit, a post-treatment unit, a control unit, a waste gas emission monitoring device, and a safety protection device. It can effectively reduce nitrogen oxide emissions and minimize harm to the environment and human health. By adopting advanced catalytic reduction technology, the system can convert nitrogen oxides into harmless nitrogen and water vapor, thereby meeting environmental protection standards. It not only effectively treats nitrogen oxide emissions but also has the advantages of simple operation, low cost, and safety and reliability, and has good application prospects and promotion value.

[0024] 2. This comprehensive nitrogen oxide waste gas treatment system, by setting up a pretreatment unit and a control unit, effectively removes particulate matter and harmful substances from the waste gas through the pretreatment unit, improves the efficiency and effect of subsequent treatment units, and ensures the stable operation of the entire system. The control unit can monitor and adjust the working status of each unit in real time, ensuring the automation and intelligence of the waste gas treatment process and reducing the complexity and cost of manual operation.

[0025] 3. This comprehensive nitrogen oxide waste gas treatment system is equipped with waste gas emission monitoring devices and safety protection devices. The waste gas emission monitoring devices enable the system to monitor the composition and concentration of emitted gases in real time, ensuring that the emitted gases meet national environmental protection standards and avoiding environmental risks caused by excessive emissions. The safety protection devices enable the system to respond quickly in emergency situations, effectively preventing accidents and ensuring the safety of operators and equipment. Attached Figure Description

[0026] Figure 1 This is a system module diagram of the present invention. Detailed Implementation

[0027] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "inner," "outer," and "side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1: A comprehensive nitrogen oxide waste gas treatment system, such as Figure 1As shown, the system includes a waste gas collection device, a pretreatment unit, a catalytic reduction reaction unit, a post-treatment unit, a control unit, a waste gas emission monitoring device, and a safety protection device. The waste gas collection device is responsible for collecting waste gas containing nitrogen oxides emitted from the factory and then transporting it to the pretreatment unit. The pretreatment unit removes particulate matter and harmful substances from the waste gas, ensuring that the gas entering the catalytic reduction reaction unit meets certain purification standards. The pretreatment unit includes a preheater, a filter, and an adsorber. The preheater heats the waste gas to a suitable reaction temperature, the filter intercepts solid particulate matter, and the adsorber removes harmful gaseous components from the waste gas using specific adsorption materials. The catalytic reduction reaction unit uses a catalyst to convert nitrogen oxides into harmless nitrogen and water vapor. The catalytic reduction reaction unit includes a reactor and a temperature and pressure control module. The reactor is filled with a precious metal catalyst, such as platinum or palladium. In the reactor, pretreated waste gas is mixed with a reducing agent (such as ammonia or hydrogen), and a reduction reaction occurs under the action of the catalyst. A temperature and pressure control module ensures that the reaction conditions are always optimal, guaranteeing efficient reaction. By integrating a waste gas collection device, pretreatment unit, catalytic reduction reaction unit, post-treatment unit, control unit, waste gas emission monitoring device, and safety protection device, it can effectively reduce nitrogen oxide emissions, minimizing harm to the environment and human health. Using advanced catalytic reduction technology, the system can convert nitrogen oxides into harmless nitrogen and water vapor, thus meeting environmental standards. It not only effectively controls nitrogen oxide emissions but also has the advantages of simple operation, low cost, and safety and reliability, showing good application prospects and promotional value.

[0034] Example 2: Based on Example 1, as follows Figure 1 As shown, the post-treatment unit further processes the exhaust gas generated by the catalytic reduction reaction unit, ensuring that the emitted gas fully complies with environmental standards. The post-treatment unit includes a scrubbing tower, a desulfurization tower, and a denitrification tower. The scrubbing tower removes acidic gases from the exhaust gas, the desulfurization tower specifically removes sulfides, and the denitrification tower further reduces the nitrogen oxide content in the exhaust gas. The control unit is responsible for monitoring and regulating the operation of the entire system, ensuring that each unit works collaboratively to achieve the best waste gas treatment effect. The control unit includes a sensor module, a controller, and actuators. The sensor module monitors key parameters in the system in real time, such as temperature, pressure, and gas concentration. The controller analyzes and makes decisions based on the data provided by the sensors, and the actuators adjust the working status of each unit according to the controller's instructions. By setting up a pre-treatment unit and a control unit, the pre-treatment unit effectively removes particulate matter and harmful substances from the waste gas, improving the efficiency and effect of subsequent treatment units and ensuring the stable operation of the entire system. The control unit can monitor and adjust the working status of each unit in real time, ensuring the automation and intelligence of the waste gas treatment process and reducing the complexity and cost of manual operation.

[0035] Example 3: Based on Examples 1 and 2, as follows... Figure 1 As shown, the exhaust gas emission monitoring device is used to monitor the composition and concentration of emitted gases in real time, ensuring that the emitted gases meet national environmental protection standards. The device includes a gas analyzer and an emission monitor. The gas analyzer analyzes the gas composition, while the emission monitor monitors the gas emission concentration. Safety protection devices ensure the safe and stable operation of the entire system and prevent accidents. These devices include an emergency shutdown system, a leak detection system, and a fire prevention system. The emergency shutdown system immediately cuts off the power and stops the equipment when an abnormality is detected. The leak detection system monitors for gas leaks within the system in real time. The fire prevention system prevents fires caused by high temperatures or chemical reactions. By installing the exhaust gas emission monitoring device and safety protection devices, the system can monitor the composition and concentration of emitted gases in real time, ensuring that the emitted gases meet national environmental protection standards and avoiding environmental risks caused by excessive emissions. The safety protection devices enable the system to respond quickly in emergencies, effectively preventing accidents and ensuring the safety of operators and equipment.

[0036] The working principle of this invention is as follows: First, the waste gas containing nitrogen oxides emitted from the factory is collected centrally by a waste gas collection device and transported to a pretreatment unit. In the pretreatment unit, the waste gas is first heated to a suitable reaction temperature by a preheater, then passes through a filter to intercept solid particles, and finally passes through an adsorber to remove harmful gaseous components such as sulfur dioxide and volatile organic compounds. After the pretreated waste gas meets certain purification standards, it is transported to a catalytic reduction reaction unit. In the catalytic reduction reaction unit, the pretreated waste gas is mixed with a reducing agent (such as ammonia or hydrogen) and undergoes a reduction reaction in a reactor filled with a precious metal catalyst (such as platinum or palladium). The temperature and pressure control module ensures that the reaction conditions are always optimal to guarantee the high efficiency of the reaction. Under the action of the catalyst, nitrogen oxides are converted into harmless nitrogen and water vapor. The treated tail gas then enters the... The exhaust gas is fed into a post-treatment unit, which includes a scrubbing tower, a desulfurization tower, and a denitrification tower. The scrubbing tower removes acidic gases from the exhaust gas, the desulfurization tower specifically removes sulfides, and the denitrification tower further reduces the nitrogen oxide content in the exhaust gas, ensuring that the emissions fully comply with environmental standards. The control unit is responsible for the operation monitoring and regulation of the entire system, including sensor modules, controllers, and actuators. The sensor modules monitor key parameters within the system in real time, the controllers analyze and make decisions based on the data provided by the sensors, and the actuators adjust the working status of each unit according to the controller's instructions, ensuring that each unit works collaboratively to achieve the best exhaust gas treatment effect. The exhaust gas emission monitoring device monitors the composition and concentration of the exhaust gas in real time to ensure that the exhaust gas meets national environmental standards. Safety protection devices include an emergency shutdown system, a leak detection system, and a fire prevention system to ensure the safe and stable operation of the entire system and prevent accidents.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A comprehensive nitrogen oxide waste gas treatment system, characterized in that, It includes a waste gas collection device, a pretreatment unit, a catalytic reduction reaction unit, a post-treatment unit, a control unit, a waste gas emission monitoring device, and a safety protection device. The pretreatment unit includes a preheater, a filter, and an adsorber. The catalytic reduction reaction unit includes a reactor and a temperature and pressure control module.

2. The nitrogen oxide waste gas comprehensive treatment system according to claim 1, characterized in that: The reactor is filled with a noble metal catalyst.

3. The nitrogen oxide waste gas comprehensive treatment system according to claim 1, characterized in that: The post-treatment unit includes a washing tower, a desulfurization tower, and a denitrification tower.

4. The nitrogen oxide waste gas comprehensive treatment system according to claim 1, characterized in that: The control unit includes a sensor module, a controller, and an actuator.

5. The nitrogen oxide waste gas comprehensive treatment system according to claim 1, characterized in that: The exhaust gas emission monitoring device includes a gas analyzer and an emission monitor.

6. The nitrogen oxide waste gas comprehensive treatment system according to claim 1, characterized in that: The safety protection devices include an emergency shutdown system, a leak detection system, and a fire protection system.

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