Glass kiln monitoring control system based on online waste gas

Abstract

The utility model discloses a glass kiln monitoring control system based on online waste gas. The glass kiln monitoring control system comprises a vacuum pump, a cooling chamber and a waste gas detection sensor, the cooling chamber is provided with a gas inlet end and a gas outlet end, the vacuum pump is used for pumping waste gas generated in the glass kiln, the vacuum pump is connected to the gas inlet end of the cooling chamber, the gas outlet end of the cooling chamber is provided with a waste gas detection sensor, and the waste gas detection sensor is used for detecting components in the waste gas. The output end of the exhaust gas sensor is connected to the exhaust gas controller, and the exhaust gas controller is connected with the remote control platform and used for transmitting the exhaust gas component information to the remote control platform. The utility model has the advantages that aiming at the problem of high temperature of waste gas, high-temperature waste gas is pumped by the vacuum pump, cooled by the cooling chamber and then detected and analyzed by the sensor, so that the influence of the high-temperature waste gas on the service life of the sensor is reduced or avoided.

Description

Technical Field

[0001] The utility model relates to the field of glass production automation control, in particular to a glass furnace monitoring and control system based on online waste gas. Background Art

[0002] The waste gas generated in the field of glass production has an impact on atmospheric environmental pollution. At the same time, the waste gas also reflects the combustion performance of the glass kiln. The combustion of the glass kiln can be adjusted according to the waste gas to achieve reduced energy consumption, reduced harmful gas emissions, and reduced carbon emissions. There are two traditional methods: one is to treat the waste gas to meet environmental protection requirements; the other is to detect production parameters and reduce pollutants in the waste gas by reasonably controlling combustion, so that the emission requirements can be met without waste gas treatment. For the first method, such as the patent application number 202220608803.5, a glass factory waste gas treatment system, which treats the sulfides, dust, and nitrogen oxides in the waste gas of the glass factory, the treated waste gas can meet the emission standards and be discharged into the atmosphere through the first-level smoke stack and the second-level smoke stack. This method can effectively treat waste gas, but it will increase costs. The second method directly monitors the combustion. If the emission requirements can be met through combustion control, it can save costs and meet the emission requirements. This method requires the detection of exhaust gas emissions, monitoring of exhaust gas emissions, and adjusting production parameters based on the data in the exhaust gas. Therefore, it is necessary to monitor the exhaust gas.

[0003] For exhaust gas monitoring based on glass kiln production, it is first necessary to detect the data in the exhaust gas. The data in the exhaust gas can be used to manually or automatically adjust the combustion parameters of the glass kiln by the control system. Then, since the exhaust gas from the glass kiln is generally at a high temperature, there is no sensor that can detect the gas at high temperature without affecting its lifespan. Therefore, it is impossible to directly detect the content in the exhaust gas in the accurate detection of the exhaust gas, and it is impossible to perform automatic adjustment based on the exhaust gas. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a glass kiln monitoring and control system based on online exhaust gas. To address the problem of high exhaust gas temperature, the exhaust gas is extracted and cooled before detection, so that the exhaust gas content can be detected through traditional sensors, thereby avoiding high temperature affecting the service life of the sensor.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a glass kiln monitoring and control system based on online exhaust gas, including a vacuum pump, a cooling chamber, and an exhaust gas detection sensor; the cooling chamber has an air inlet end and an air outlet end, the vacuum pump is used to extract the exhaust gas generated in the glass kiln, the vacuum pump is connected to the air inlet end of the cooling chamber, and the air outlet end of the cooling chamber is provided with an exhaust gas detection sensor, the exhaust gas detection sensor is used to detect the components in the exhaust gas, and the output end is connected to the exhaust gas controller, and the exhaust gas controller is connected to the remote control platform for transmitting the exhaust gas component information to the remote control platform.

[0006] The cooling chamber is used to cool the exhaust gas entering through the air inlet end and then output the cooled exhaust gas through the air outlet end.

[0007] The gas in the cooling chamber is cooled by an electronic cooler, and a control end of the electronic cooler is connected to an exhaust gas controller.

[0008] The electronic cooler is a semiconductor cooling sheet.

[0009] The exhaust gas sensor includes a carbon monoxide concentration sensor, a carbon dioxide concentration sensor and / or a sulfide sensor.

[0010] The exhaust gas controller is connected to the remote control platform by wireless communication.

[0011] The remote control platform includes a DCS system and a human-computer interaction module connected to the DCS system. The human-computer interaction module is used to display exhaust gas data information through the control of the DCS system.

[0012] The output end of the DCS system is connected to a combustion-supporting air controller and a fuel control system, and is used to control the combustion-supporting air and the fuel respectively.

[0013] The exhaust gas controller is connected to a temperature sensor, and the temperature sensor is used to detect temperature data of an exhaust end of the cooling chamber.

[0014] The advantages of the utility model are: in order to solve the problem of high exhaust gas temperature, the high-temperature exhaust gas is extracted by a vacuum pump, cooled in a cooling chamber, and then detected and analyzed by a sensor, thereby reducing or avoiding the influence of high-temperature exhaust gas on the service life of the sensor; at the same time, the exhaust gas detection can be connected to the DCS system inside the factory for convenient monitoring; at the same time, the DCS system can be used to adjust the combustion parameters of the glass kiln, such as controlling the combustion-supporting air and fuel, so as to optimize the content of the components in the exhaust gas, improve the combustion efficiency as much as possible, and achieve the requirements of meeting emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0016] Figure 1 This is a schematic diagram of the monitoring system of the utility model;

[0017] Figure 2 This is a control architecture schematic diagram of the monitoring system of the present utility model.

[0018] The markings in the above figures are: 1. vacuum pump; 2. air inlet end of the cooling chamber; 3. cooling chamber; 4. air outlet end of the cooling chamber; 5. exhaust gas sensor; 6. exhaust gas controller. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0020] The glass furnace monitoring and control system based on online exhaust gas in this embodiment is mainly to realize online detection of high-temperature exhaust gas to avoid sensor damage caused by direct detection of high-temperature exhaust gas. Therefore, in this application, the high-temperature exhaust gas is extracted by a vacuum pump and then cooled in a cooling chamber before being detected by the sensor, thereby avoiding the high temperature affecting the service life of the sensor. At the same time, the detected sensor data can be connected to the DCS system, which is convenient for users to monitor and view and provide data support for the automatic control of the DCS system. The specific plan is as follows:

[0021] like Figure 1 , 2 As shown, the glass furnace monitoring and control system based on online exhaust gas includes a vacuum pump, a cooling chamber, and an exhaust gas detection sensor; the vacuum pump is used to extract the exhaust gas generated in the glass furnace, and it extends into the exhaust gas discharge channel of the glass furnace through a pipeline to extract the high-temperature exhaust gas; the cooling chamber has an air inlet end and an air outlet end, and the cooling chamber is a metal or other material cavity with an air inlet and an air outlet inside, so that the high-temperature gas can enter and exit, and cool down in the chamber; the high-temperature exhaust gas extracted by the vacuum pump enters through the air inlet end of the cooling cavity, that is, the vacuum pump is connected to the air inlet end of the cooling chamber, so that the high-temperature exhaust gas can enter the cooling chamber through the air inlet end; the high-temperature exhaust gas is cooled in the cooling cavity and then discharged from the air outlet end of the cooling chamber, and an exhaust gas detection sensor is arranged at the air outlet end of the cooling chamber, and the exhaust gas detection sensor is arranged at the air outlet end, so that the exhaust gas first contacts the exhaust gas detection sensor after being discharged, so as to improve the detection accuracy, and the exhaust gas detection sensor is used to detect the gas component content in the exhaust gas after cooling.

[0022] The exhaust gas detection sensor generally includes one or more combinations of carbon monoxide concentration sensors, carbon dioxide concentration sensors and or sulfide sensors or other component sensors set according to needs, which are used to detect the content in the exhaust gas. If the detected data needs to be monitored, it needs to be transmitted to the DCS system inside the factory, which is convenient for monitoring and user viewing. Therefore, the exhaust gas detection sensor is used to detect the components in the exhaust gas, and its output end is connected to the exhaust gas controller. The exhaust gas detection sensor sends the exhaust gas component information to the exhaust gas controller, and the exhaust gas controller sends the data to the DCS system by wired or wireless means. The exhaust gas controller is a digital control chip, which mainly converts the analog or digital signal of the sensor and transmits it to the DCS system, mainly playing a transmission role. In this case, the exhaust gas controller can be implemented using the STM32 series microcontroller. The microcontroller has rich IO port resources, can connect multiple sensors to obtain their signals, and then realize wired or wireless communication through the on-chip resources or external resources on the microcontroller, so as to realize the data sending to the DCS system. Taking wireless communication as an example, it only needs to expand and connect a 2G or above communication chip in the microcontroller to achieve the purpose of wireless communication transmission.

[0023] The cooling chamber is used to cool the exhaust gas entering through the air inlet and then output the cooled exhaust gas through the air outlet. In order to cool faster to achieve rapid cooling of high-temperature exhaust gas, the gas in the cooling chamber can be cooled by an electronic cooler. The control end of the electronic cooler is connected to the exhaust gas controller, and the exhaust gas controller controls the operation of the electronic cooler; taking the semiconductor cooling plate as an example, as an electronic cooler, it can achieve refrigeration according to the current control method, so as to cool the high-temperature exhaust gas, but it should be noted that one end of the cooling plate is for cooling and the other end needs to dissipate heat. Therefore, when setting, the cooling end of the cooling plate needs to be set in the chamber, and the heat dissipation end needs to be set outside the chamber, so as to achieve cooling of the high-temperature exhaust gas.

[0024] Since the cooling effect of the semiconductor refrigeration plate can be adjusted, the temperature of the exhaust gas at the output end of the cooling chamber can be detected to adjust the cooling effect of the refrigeration plate. Therefore, a temperature sensor is provided at the outlet end of the cooling chamber, and the exhaust gas controller is connected to the temperature sensor. The temperature sensor is used to detect the temperature data of the outlet end of the cooling chamber. When the temperature of the outlet is greater than the set temperature threshold, the working state of the semiconductor refrigeration plate can be adjusted until the temperature of the outlet is lower than the set temperature threshold.

[0025] In the embodiments of the present application, the DCS system is generally a distributed control system in the production plant. It is an industrial automation control system based on controllers and field equipment, which collects relevant process signals into the system, and is monitored or otherwise controlled by the operating station, with decentralized control, centralized operation, and hierarchical management as the main features. Different glass production plants will have their own DCS systems, so monitoring, viewing, and automatic control can be achieved after the sensor data is connected to the DCS system. For example, through the human-computer interaction module connected to the DCS system, remote monitoring and viewing of the exhaust gas components can be achieved, which facilitates the operator to monitor and perform other control operations through the operating station in the DCS system, thereby achieving the purpose of DCS control. This control can be automatically controlled by the heavy controller of the DCS system or manually controlled by the staff of the operating station, such as the output end of the DCS system is connected to the combustion-supporting air controller and the fuel control system, which is used to control the combustion-supporting air and fuel separately. The combustion-supporting air can be controlled manually or the DCS controller can be automatically controlled to control the fuel used for combustion, thereby achieving the control of the exhaust gas. Thereby, the changes of various components in the kiln exhaust gas can be monitored at any time, and then automatically adjusted by the adjustment system. Reduce heat loss in the kiln, reduce energy consumption and carbon emissions, achieve energy saving and consumption reduction, reduce costs, and improve economic and social benefits. Through continuous and uninterrupted detection and analysis of exhaust gas data, and then timely adjustment through the DCS system. Ensure that the flame in the kiln burns normally and the combustion-supporting air volume control reaches the ideal. Through DCS comparison, the combustion-supporting air ratio is adjusted in time through the automatic adjustment system to maximize the combustion efficiency and meet the exhaust gas emission requirements.

[0026] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. Glass furnace monitoring and control system based on online exhaust gas, characterized by: It includes a vacuum pump, a cooling chamber, and an exhaust gas detection sensor; the cooling chamber has an air inlet end and an air outlet end, the vacuum pump is used to extract the exhaust gas generated in the glass kiln, the vacuum pump is connected to the air inlet end of the cooling chamber, the exhaust gas detection sensor is provided at the air outlet end of the cooling chamber, the exhaust gas detection sensor is used to detect the components in the exhaust gas, and the output end is connected to the exhaust gas controller, the exhaust gas controller is connected to the remote control platform, and is used to transmit the exhaust gas component information to the remote control platform.

2. The glass furnace monitoring and control system based on online exhaust gas according to claim 1, characterized in that: The cooling chamber is used to cool the exhaust gas entering through the air inlet end and then output the cooled exhaust gas through the air outlet end.

3. The glass furnace monitoring and control system based on online exhaust gas according to claim 1, characterized in that: The gas in the cooling chamber is cooled by an electronic cooler, and a control end of the electronic cooler is connected to an exhaust gas controller.

4. The glass furnace monitoring and control system based on online exhaust gas according to claim 3 is characterized in that: The electronic cooler is a semiconductor cooling sheet.

5. The glass furnace monitoring and control system based on online exhaust gas according to claim 1, characterized in that: The exhaust gas detection sensor includes a carbon monoxide concentration sensor, a carbon dioxide concentration sensor and / or a sulfide sensor.

6. The glass furnace monitoring and control system based on online exhaust gas according to any one of claims 1 to 5, characterized in that: The exhaust gas controller is connected to the remote control platform by wireless communication.

7. The glass furnace monitoring and control system based on online exhaust gas according to any one of claims 1 to 5, characterized in that: The remote control platform includes a DCS system and a human-computer interaction module connected to the DCS system. The human-computer interaction module is used to display exhaust gas data information through the control of the DCS system.

8. The glass furnace monitoring and control system based on online exhaust gas according to claim 7, characterized in that: The output end of the DCS system is connected to a combustion-supporting air controller and a fuel control system, and is used to control the combustion-supporting air and the fuel respectively.

9. The glass furnace monitoring and control system based on online exhaust gas according to claim 3 or 4, characterized in that: The exhaust gas controller is connected to a temperature sensor, and the temperature sensor is used to detect temperature data of an exhaust end of the cooling chamber.

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