Emergency control system for combustion of glass kiln

Abstract

The utility model discloses a glass kiln combustion emergency control system which comprises a kiln combustion chamber, a natural gas pipeline, a combustion-supporting gas pipeline and a smoke exhaust pipeline, the combustion-supporting gas pipeline and the natural gas pipeline are both connected with the kiln combustion chamber, and the outer end of the combustion-supporting gas pipeline is connected with an air supply assembly. The natural gas pipeline and the combustion-supporting gas pipeline are respectively provided with a stop valve, the smoke exhaust pipeline is connected with a smoke exhaust port of a kiln combustion chamber, the pressure sensor and the control module are connected, the control module is used for controlling the stop valves to work, the pressure sensor is arranged on the combustion-supporting gas pipeline, and the control module is connected with the stop valves. Combustion-supporting air and natural gas can be synthesized into mixed gas through a pipeline and enter the kiln for sufficient combustion according to a required proportion, and if the problem of auxiliary air occurs, the control module immediately collects abnormal air pressure data and automatically cuts off the output of the natural gas and the combustion-supporting air to the kiln for combustion control; environmental protection data and waste gas are effectively and rapidly controlled to meet indexes, and the problem that online environmental protection data exceed the standard is avoided.

Description

Technical Field

[0001] This utility model relates to the field of glass furnace technology, and in particular to an emergency control system for glass furnace combustion. Background Technology

[0002] Glass furnace production relies on the combined use of natural gas fuel and combustion air blowers to generate high temperatures that melt raw glass materials. These materials are then processed into glass products to meet market demands. The natural gas is piped into the workshop from an oil company, and after pressure and flow regulation by specialized pipeline equipment, it is mixed with natural gas by the combustion air blower and introduced into the furnace in a specific ratio for complete combustion, resulting in high-temperature melting of the glass raw materials to meet production standards. An improper ratio of natural gas to combustion air can lead to excessive levels of SO2 and NOx in real-time online environmental data. X Currently, the environmental standard for SO2 is 50 mg / m³. 2 The following are examples of the serious and uncontrollable consequences that exceeding the standards will bring to the company's production and national environmental protection.

[0003] In the past, the alarm output was collected after the motor stopped due to a fault. After the abnormality was discovered by manual inspection, the flow rate was controlled by adjusting the size of the natural gas valve. However, the length of time for manual intervention has led to the online environmental data exceeding the standard.

[0004] For example, patent CN215403786U discloses a glass furnace combustion system with a non-catalytic conversion furnace, which includes a glass furnace, non-catalytic conversion furnaces A / B, a flue gas recovery device, a chimney, a high-temperature flue gas fan, a natural gas supply device, and an oxygen supply device. The natural gas supply device and the oxygen supply device are connected to the glass furnace through different pipelines. If the oxygen supply device malfunctions and cannot be dealt with in time, it will cause the online environmental data to exceed the standard. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an emergency control system for glass kiln combustion, which provides timely emergency response and avoids the problem of exceeding online environmental protection data standards.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] The glass kiln combustion emergency control system includes a kiln combustion chamber, a natural gas pipeline, a combustion-supporting gas pipeline, and a flue gas pipeline. The combustion-supporting gas pipeline and the natural gas pipeline are both connected to the kiln combustion chamber. The outer end of the combustion-supporting gas pipeline is connected to the air supply assembly. Both the natural gas pipeline and the combustion-supporting gas pipeline are equipped with shut-off valves. The flue gas pipeline is connected to the flue gas outlet of the kiln combustion chamber. The system also includes a pressure sensor and a control module for controlling the operation of the shut-off valves. The pressure sensor is located on the combustion-supporting gas pipeline, and the control module is connected to the shut-off valves.

[0008] Further or preferred:

[0009] The control module is a DCS control module.

[0010] Both the natural gas pipeline and the auxiliary gas pipeline are equipped with regulating valves, which are connected to the control module.

[0011] The air supply component is a fan.

[0012] The pressure sensor on the gas-supporting pipeline is located behind the blower.

[0013] The shut-off valve is a pneumatic valve or a solenoid valve.

[0014] A natural gas pressure sensor is installed on the natural gas pipeline, and the natural gas pressure sensor is connected to the control module.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] The glass kiln combustion emergency control system is reasonably designed, so that the combustion air and natural gas are combined through pipelines to form a mixed gas that enters the kiln in the required proportion for complete combustion. If a problem occurs with the combustion air, the control module immediately collects abnormal air pressure data and automatically cuts off the output of natural gas and combustion air to the kiln combustion control. It effectively and quickly controls environmental data and exhaust gas to meet the indicators, avoiding the problem of online environmental data exceeding the standard. Attached Figure Description

[0017] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0018] Figure 1 This is a schematic diagram of the control system of this utility model. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0020] like Figure 1 As shown, the glass kiln combustion emergency control system is a one-button emergency control program system based on the DCS control system; it includes a kiln combustion chamber, a natural gas pipeline, a combustion-supporting gas pipeline, and a flue gas pipeline. The combustion-supporting gas pipeline and the natural gas pipeline are both connected to the kiln combustion chamber. The outer end of the combustion-supporting gas pipeline is connected to the air supply component. Both the natural gas pipeline and the combustion-supporting gas pipeline are equipped with shut-off valves. The flue gas pipeline is connected to the flue gas outlet of the kiln combustion chamber.

[0021] This patented system also includes a connected pressure sensor and a control module for controlling the operation of the shut-off valve. The pressure sensor is located on the gas-supporting pipeline, and the control module is connected to the shut-off valve.

[0022] This utility model's glass kiln combustion emergency control system is rationally designed, ensuring that the combustion air and natural gas are combined through pipelines to form a mixed gas that enters the kiln in the required proportion for complete combustion. If a problem occurs with the combustion air, the control module immediately collects abnormal air pressure data and automatically cuts off the output of natural gas and combustion air to the kiln combustion control. It effectively and quickly controls environmental data and exhaust gas to meet the standards, avoiding the problem of exceeding online environmental data limits.

[0023] The control module is a DCS control module. The air supply components include a motor and a fan; the shut-off valve is a pneumatic valve or a solenoid valve, which is easy to control.

[0024] Both the natural gas pipeline and the auxiliary gas pipeline are equipped with regulating valves, which are connected to the control module. The regulating valves are located after the shut-off valves on the corresponding pipelines, and the gas flow can be effectively controlled through the regulating valves.

[0025] The pressure sensor on the combustion-supporting gas pipeline is located behind the blower. Furthermore, a natural gas pressure sensor is installed on the natural gas pipeline, and this natural gas pressure sensor is connected to the control module.

[0026] This system collects the pressure of the combustion air and monitors the operation status of the blower in real time. Through the control module algorithm, it monitors, collects, and controls the system in real time, making environmental protection data management and control requirements within seconds. In case of abnormality, it will shut off the natural gas valve and stop the combustion system within one second, ensuring that the online environmental data management indicators are within the range. After the equipment returns to normal, safe production is guaranteed. This not only reduces the risk of safety hazards after use but also effectively manages environmental data.

[0027] The system of this utility model mainly adopts a pressure sensor installed at the outlet of the fan to collect the wind pressure in real time and transmit it to the control module. The control module controls the work done by the motor and the wind pressure.

[0028] Currently, the main reason for SO2 exceeding the standard is insufficient combustion air, which can be caused by the following situations: combustion air fan shutdown; fan belt breakage; combustion air flow meter distortion; combustion air regulating valve failure; and insufficient combustion air pressure.

[0029] In any of the above situations, the duct outlet pressure sensor will collect data in real time and transmit it to the DCS module. If, under natural gas flow conditions, manual intervention is not implemented by the time the issue is detected, the natural gas may not burn completely due to insufficient combustion air, severely causing SO2 levels to exceed online environmental standards. In severe cases, the online data may reach 1000 mg / m³. 2 above.

[0030] To ensure compliance with environmental protection requirements and safe production, and to prevent data exceeding standards, this system employs a DCS-based centralized control kiln combustion system. This system includes a wind pressure sensor, a control module, a combustion air regulating valve, a natural gas main shut-off valve, and a natural gas regulating valve. This ensures that combustion air and natural gas are mixed through pipelines and enter the kiln in the required proportions for complete combustion. If any abnormal wind pressure occurs, the DCS immediately detects the anomaly and automatically cuts off the supply of natural gas and combustion air to the kiln. This effectively and quickly controls environmental data and ensures that exhaust gas levels remain within national standards.

[0031] After automation through DCS program data collection, monitoring, and calculation, it saves manpower and reduces operation time, effectively avoids exceeding environmental data standards, and is suitable for use in high-temperature kilns for flat glass, special glass, and solar ultra-clear patterned glass.

[0032] A DCS (Distributed Control System) is used for centralized automatic control, and the control parameters are recorded and saved for easy retrieval and traceability later.

[0033] This utility model system has the following advantages and benefits: 1. The pneumatic regulating valve and pneumatic shut-off valve are simple to operate. Simply send a regulating signal to the pneumatic regulating valve and pneumatic shut-off valve through the DCS configuration program control platform to achieve valve regulation and closure. The pneumatic regulating valve has high regulation accuracy and is suitable for various media, including corrosive media and high-temperature and high-pressure media. It also saves manpower and ensures personnel safety. 2. Based on the DCS system, the pneumatic regulating valve and pneumatic shut-off valve can achieve remote and automated control, improving production efficiency. This aligns with the trend of industrial automation and intelligent development under the background of manufacturing industry upgrading. 3. The completeness of event records is the basis for analysis and research during the event, providing a series of data and curve support.

[0034] The above description is only a preferred embodiment of the present utility model. The above technical features can be arbitrarily combined to form multiple embodiments of the present utility model.

[0035] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. An emergency control system for glass kiln combustion, comprising a kiln combustion chamber, a natural gas pipeline, a combustion-supporting gas pipeline, and a flue gas pipeline, wherein the combustion-supporting gas pipeline and the natural gas pipeline are both connected to the kiln combustion chamber, the outer end of the combustion-supporting gas pipeline is connected to an air supply assembly, both the natural gas pipeline and the combustion-supporting gas pipeline are equipped with shut-off valves, and the flue gas pipeline is connected to the flue gas outlet of the kiln combustion chamber, characterized in that: It also includes a connected pressure sensor and a control module for controlling the operation of the shut-off valve. The pressure sensor is located on the gas supply pipeline, and the control module is connected to the shut-off valve.

2. The glass furnace combustion emergency control system as described in claim 1, characterized in that: The control module is a DCS control module.

3. The glass furnace combustion emergency control system as described in claim 1, characterized in that: Both the natural gas pipeline and the auxiliary gas pipeline are equipped with regulating valves, which are connected to the control module.

4. The glass furnace combustion emergency control system as described in claim 1, characterized in that: The air supply component is a fan.

5. The glass furnace combustion emergency control system as described in claim 4, characterized in that: The pressure sensor on the gas-supporting pipeline is located behind the blower.

6. The glass furnace combustion emergency control system as described in claim 1, characterized in that: The shut-off valve is a pneumatic valve or a solenoid valve.

7. The glass furnace combustion emergency control system as described in claim 1, characterized in that: A natural gas pressure sensor is installed on the natural gas pipeline, and the natural gas pressure sensor is connected to the control module.

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