A high-toxicity high-concentration organic waste gas combustion system

Abstract

The application discloses a high-toxicity and high-concentration organic waste gas combustion system, which comprises a high-toxicity and high-concentration waste gas unit, a fuel unit, a pipeline high-temperature combustion system, a combustion engine heat supply system and a multi-valve heat accumulation incinerator system; the pipeline high-temperature combustion system comprises a pipeline burner, a No.1 combustion-supporting unit and a high-temperature heating pipeline, the high-toxicity and high-concentration waste gas unit is connected with the No.1 combustion-supporting unit, the fuel unit and the No.1 combustion-supporting unit are connected with the pipeline burner, the pipeline burner is connected with the high-temperature heating pipeline, and the high-temperature heating pipeline is connected with the multi-valve heat accumulation incinerator system; the combustion engine heat supply system comprises an incinerator burner and a No.2 combustion-supporting unit, the fuel unit and the No.2 combustion-supporting unit are connected with the incinerator burner, and the incinerator burner is connected with the multi-valve heat accumulation incinerator system. The system has the advantages that three incinerations are carried out by using the pipeline burner, the high-temperature heating pipeline and the valve heat accumulation incinerator, and the purification efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of combustion technology for highly toxic and high-concentration organic waste gases, and particularly to a combustion system for highly toxic and high-concentration organic waste gases. Background Technology

[0002] Organic waste gas combustion technology is currently the most efficient destruction technology for purification. Among them, multi-valve regenerative thermal oxidizers are most widely used in high-concentration conditions, featuring low energy consumption, high removal efficiency, and stable operation. Multi-valve regenerative thermal oxidizers are generally equipped with fuel burners and use air as combustion air for heat supply to ensure a constant furnace temperature.

[0003] In practical applications, when the waste gas source is highly toxic, such as methanethiol and other highly corrosive gases, the requirements for the residence time, materials, purification efficiency, and operational safety of the incinerator are all high, resulting in a significant increase in equipment investment costs. Therefore, developing a more cost-effective and adaptable combustion system for highly toxic and high-concentration organic waste gases is particularly crucial. Summary of the Invention

[0004] The purpose of this invention is to provide a combustion system for highly toxic and high-concentration organic waste gas, thereby solving the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A combustion system for highly toxic and high-concentration organic waste gas includes a highly toxic and high-concentration waste gas unit, a fuel unit, a pipeline high-temperature combustion system, a burner heating system, and a multi-valve regenerative incinerator system.

[0007] The high-temperature combustion system includes a pipeline burner, a No. 1 combustion-supporting unit, and a high-temperature heating pipeline. The highly toxic and high-concentration waste gas unit is connected to the No. 1 combustion-supporting unit. The fuel unit and the No. 1 combustion-supporting unit are both connected to the pipeline burner. The pipeline burner is connected to the high-temperature heating pipeline, and the high-temperature heating pipeline is connected to the multi-valve regenerative incinerator system. The burner heating system includes an incinerator burner and a No. 2 combustion-supporting unit. The fuel unit and the No. 2 combustion-supporting unit are both connected to the incinerator burner, and the incinerator burner is connected to the multi-valve regenerative incinerator system.

[0008] Preferably, the No. 1 combustion-supporting unit includes a No. 1 combustion-supporting air source, a gas mixer, and a No. 1 combustion-supporting blower; the No. 1 combustion-supporting air source is connected to the gas mixer, the gas mixer is connected to the No. 1 combustion-supporting blower, and the No. 1 combustion-supporting blower is connected to the pipeline burner.

[0009] Preferably, a control valve and a pressure gauge are installed on the connecting pipe between the No. 1 combustion source and the gas mixer, and the No. 1 control valve and the No. 1 pressure gauge are interlocked for control; a concentration detection instrument and an oxygen content instrument are installed on the connecting pipe between the gas mixer and the No. 1 combustion blower; and a pressure gauge is installed on the connecting pipe between the No. 1 combustion blower and the pipe burner.

[0010] The No. 1 pressure gauge, concentration detection instrument, and oxygen content instrument are all interlocked with the No. 1 control valve.

[0011] The No. 4 pressure gauge is interlocked with the No. 1 combustion fan.

[0012] Preferably, at least two No. 1 temperature gauges are installed on the high-temperature heating pipeline; the No. 1 temperature gauges are interlocked with the pipeline burner.

[0013] Preferably, the high-toxicity, high-concentration waste gas unit includes a high-toxicity, high-concentration waste gas source and a high-toxicity, high-concentration waste gas buffer device. The high-toxicity, high-concentration waste gas source is connected to the high-toxicity, high-concentration waste gas buffer device, and the high-toxicity, high-concentration waste gas buffer device is connected to the gas mixer.

[0014] Preferably, a No. 2 control valve is installed on the connecting pipe between the high-toxicity, high-concentration waste gas source and the high-toxicity, high-concentration waste gas buffer device; a No. 2 pressure gauge is installed on the high-toxicity, high-concentration waste gas buffer device; and a No. 3 control valve and a No. 3 pressure gauge are installed on the connecting pipe between the high-toxicity, high-concentration waste gas buffer device and the gas mixer.

[0015] Control valve No. 2 is interlocked with pressure gauge No. 2; pressure gauge No. 3, concentration detection instrument and oxygen content instrument are all interlocked with control valve No. 3.

[0016] Preferably, the No. 2 combustion-supporting unit includes a No. 2 combustion-supporting air source and a No. 2 combustion-supporting fan; the No. 2 combustion-supporting air source is connected to the No. 2 combustion-supporting fan, and the No. 2 combustion-supporting fan is connected to the incinerator burner.

[0017] Preferably, the multi-valve regenerative incinerator system includes a multi-valve regenerative furnace body and a purging unit; the high-temperature heating pipeline and the incinerator burner are both connected to the multi-valve regenerative furnace body; the purging unit includes a purging air source and a purging fan, the purging air source is connected to the purging fan, and the purging fan is connected to the multi-valve regenerative furnace body; an exhaust pipe is connected to the multi-valve regenerative furnace body, and the incinerator exhaust generated in the multi-valve regenerative furnace body is discharged through the exhaust pipe.

[0018] Preferably, the multi-valve regenerative furnace body is equipped with a No. 5 pressure gauge and at least two No. 2 temperature gauges, and the No. 5 pressure gauge and the No. 2 temperature gauges are interlocked with the incinerator burner for control.

[0019] Preferably, the combustion system further includes a general exhaust gas unit, which includes a general exhaust gas source and an exhaust gas fan. The general exhaust gas source is connected to the exhaust gas fan, and the exhaust gas fan is connected to the multi-valve regenerative furnace body.

[0020] The beneficial effects of this invention are: 1. Highly toxic and high-concentration waste gas is introduced into the pipeline burner from the combustion air duct, and after prolonged decomposition in the high-temperature heating duct, it enters the furnace of the multi-valve regenerative furnace, improving purification efficiency. 2. The pipeline burner, high-temperature heating duct, and multi-valve regenerative furnace are used for three-stage combustion. The interlocking control of the multi-valve regenerative incinerator system, the burner heating system, and the pipeline high-temperature combustion system effectively improves purification efficiency. 3. The heat released by the combustion and decomposition of highly toxic and high-concentration waste gas can reduce the fuel consumption of the burner. 4. The waste gas concentration at the incinerator inlet is reduced, lowering the risk of equipment overheating; the dilution air volume at the incinerator inlet and the residence time in the incinerator are reduced, decreasing the incinerator's external dimensions and floor space; the material grade at the incinerator inlet is lowered, reducing equipment investment costs; and improving system flexibility. The entire combustion system operates stably in treating highly toxic and high-concentration organic waste gas. 5. The control valves and instruments controlling the combustion unit enhance system flexibility, enabling flexible mixing of combustion air and highly toxic and high-concentration waste gas, ensuring safe and complete combustion. 6. The interlocking control of the furnace temperature and the incinerator burner ensures a constant furnace temperature and stable operation of the entire combustion system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the combustion system in an embodiment of the present invention.

[0022] In the diagram: 1, Fuel source; 2-1, Combustion air source No. 1; 2-2, Combustion air source No. 2; 3, Highly toxic and high-concentration waste gas source; 4, Highly toxic and high-concentration waste gas buffer device; 5, Gas mixer; 6, Combustion fan No. 1; 7, Pipeline burner; 8, Incinerator burner; 9, Combustion fan No. 2; 10, Fuel pipeline; 11, Combustion air pipeline No. 1; 12, Highly toxic and high-concentration waste gas pipeline; 13, Combustion air pipeline; 14, High-temperature heating pipeline; 15, Combustion air pipeline No. 2; 16, Control valve No. 1; 17, Pressure valve No. 1. Instruments; 18, Control Valve No. 2; 19, Control Valve No. 3; 20, Pressure Instrument No. 2; 21, Pressure Instrument No. 3; 22, Pressure Instrument No. 4; 23, Concentration Detection Instrument; 24, Oxygen Content Instrument; 25, Temperature Instrument No. 1; 26, Multi-valve Regenerative Furnace Body; 27, Temperature Instrument No. 2; 28, Pressure Instrument No. 5; 29, Purge Air Source; 30, General Waste Gas Source; 31, Incinerator Exhaust; 32, Purge Fan; 33, Waste Gas Fan; 34, Purge Pipeline; 35, General Waste Gas Pipeline; 36, Exhaust Gas Pipeline. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] like Figure 1 As shown, in this embodiment, a combustion system for highly toxic and high-concentration organic waste gas is provided, including a highly toxic and high-concentration waste gas unit, a fuel unit, a pipeline high-temperature combustion system, a burner heating system, and a multi-valve regenerative incinerator system.

[0025] The high-temperature combustion system includes a pipe burner 7, a combustion-supporting unit 1, and a high-temperature heating pipe 14. The high-toxicity, high-concentration waste gas unit is connected to the combustion-supporting unit 1. The fuel unit and the combustion-supporting unit 1 are both connected to the pipe burner 7. The pipe burner 7 is connected to the high-temperature heating pipe 14. The high-temperature heating pipe 14 is connected to the multi-valve regenerative incinerator system. The burner heating system includes an incinerator burner 8 and a combustion-supporting unit 2. The fuel unit and the combustion-supporting unit 2 are both connected to the incinerator burner 8. The incinerator burner 8 is connected to the multi-valve regenerative incinerator system.

[0026] In this embodiment, the fuel in fuel source 1 is introduced into the burner in the pipeline and the incinerator burner 8 through two separate fuel pipelines 10.

[0027] In this embodiment, the No. 1 combustion-supporting unit includes a No. 1 combustion-supporting air source 2-1, a gas mixer 5, and a No. 1 combustion-supporting fan 6; the No. 1 combustion-supporting air source 2-1 is connected to the gas mixer 5, the gas mixer 5 is connected to the No. 1 combustion-supporting fan 6, and the No. 1 combustion-supporting fan 6 is connected to the pipeline burner 7.

[0028] The high-toxicity, high-concentration waste gas unit includes a high-toxicity, high-concentration waste gas source 3 and a high-toxicity, high-concentration waste gas buffer device 4. The high-toxicity, high-concentration waste gas source 3 is connected to the high-toxicity, high-concentration waste gas buffer device 4, and the high-toxicity, high-concentration waste gas buffer device 4 is connected to the gas mixer 5.

[0029] Combustion air source 2-1 is connected to the inlet of gas mixer 5 through combustion air pipeline 11. High toxic and high concentration exhaust gas source 3 is connected to the inlet of gas mixer 5 through high toxic and high concentration exhaust gas pipeline 12. High toxic and high concentration exhaust gas buffer device 4 is installed on high toxic and high concentration exhaust gas pipeline 12 to buffer the high toxic and high concentration exhaust gas and ensure that the high toxic and high concentration exhaust gas is discharged stably.

[0030] After the gas mixer 5 fully mixes the highly toxic and high-concentration waste gas with the No. 1 combustion air, it is introduced into the pipeline burner 7 through the No. 1 combustion air duct 13. The No. 1 combustion air duct 13 is equipped with a No. 1 combustion air fan 6, which is used to guide the gas flow and accelerate the gas delivery.

[0031] A control valve 16 and a pressure gauge 17 are installed on the No. 1 combustion air pipeline 11. A control valve 16, a control valve 3, and a pressure gauge 21 are installed on the high-toxicity, high-concentration exhaust gas pipeline 12. A pressure gauge 20 is installed on the high-toxicity, high-concentration exhaust gas buffer device 4. A pressure gauge 22, a concentration detection instrument 23, and an oxygen content instrument 24 are installed on the No. 1 combustion air pipeline 13.

[0032] Among them, the No. 1 pressure gauge 17, the concentration detection instrument 23 and the oxygen content instrument 24 are all interlocked with the No. 1 control valve 16; the No. 4 pressure gauge 22 is interlocked with the No. 1 combustion fan 6 to ensure that the combustion air enters the pipeline burner 7 under stable pressure.

[0033] A control valve 18 is installed on the connecting pipe between the high-toxicity, high-concentration waste gas source 3 and the high-toxicity, high-concentration waste gas buffer device 4; a pressure gauge 20 is installed on the high-toxicity, high-concentration waste gas buffer device 4; a control valve 19 and a pressure gauge 21 are installed on the connecting pipe between the high-toxicity, high-concentration waste gas buffer device 4 and the gas mixer 5.

[0034] Control valve 18 is interlocked with pressure gauge 20; pressure gauge 21, concentration meter 23 and oxygen meter 24 are all interlocked with control valve 19.

[0035] Concentration meter 23 is used to ensure system combustion safety, requiring the concentration to not exceed the lower explosive limit of 25%. Oxygen meter 24 is used to monitor the oxygen concentration in the combustion air to ensure complete combustion; it is interlocked with control valve 16 and pressure meter 17. Control valve 19 and pressure meter 21 are interlocked to automatically regulate pipeline pressure and balance system pressure.

[0036] The pipe burner 7 is connected to the high-temperature heating pipe 14 and is interlocked with the No. 1 temperature instrument 25 installed on the high-temperature heating pipe 14 to ensure stable and safe operation of the internal temperature of the high-temperature heating pipe 14. There are no less than two No. 1 temperature instruments 25, and the average value is taken when the system is running normally.

[0037] Control valve 16 and control valve 3 are both interlocked with concentration detection instrument 23 and oxygen content instrument 24 for real-time control, so as to achieve flexible ratio of combustion air and high toxic and high concentration exhaust gas flow.

[0038] Pressure gauge 20 is used to determine the internal pressure of the high-toxicity, high-concentration waste gas buffer device 4. It is interlocked with control valve 18. If the internal pressure of the device does not reach the set value, control valve 18 is opened. If the internal pressure of the device reaches the set value, control valve 18 is closed.

[0039] In this embodiment, the No. 2 combustion-supporting unit includes a No. 2 combustion-supporting air source 2-2 and a No. 2 combustion-supporting fan 9; the No. 2 combustion-supporting air source 2-2 is connected to the No. 2 combustion-supporting fan 9, and the No. 2 combustion-supporting fan 9 is connected to the incinerator burner 8.

[0040] In this embodiment, the multi-valve regenerative incinerator system includes a multi-valve regenerative furnace body 26 and a purging unit; the high-temperature heating pipeline 14 and the incinerator burner 8 are both connected to the multi-valve regenerative furnace body 26.

[0041] The purging unit includes a purging air source 29 and a purging fan 32. The purging air source 29 is connected to the multi-valve regenerative furnace body 26 via a purging pipeline 34, and the purging fan 32 is installed on the purging pipeline 34.

[0042] The combustion system also includes a general exhaust gas unit, which includes a general exhaust gas source 30 and an exhaust gas fan 33. The general exhaust gas source 30 is connected to the multi-valve regenerative furnace body 26 via a general exhaust gas pipeline 35, and the exhaust gas fan 33 is installed on the general exhaust gas pipeline 35.

[0043] The multi-valve regenerative furnace body 26 is connected to an exhaust pipe 36, and the exhaust gas 31 generated in the multi-valve regenerative furnace body 26 is discharged through the exhaust pipe 36.

[0044] The combustion system utilizes multi-directional interlocking control between instruments, control valves, and fans to ensure safe and stable operation.

[0045] In this embodiment, the outlet of the high-temperature heating pipeline 14 is connected to the furnace chamber of the multi-valve regenerative furnace body 26, and the incinerator burner 8 is connected to the No. 2 combustion air blower 9 on the No. 2 combustion air pipeline 15 and is located in the furnace chamber of the multi-valve regenerative furnace body 26.

[0046] In this embodiment, the multi-valve regenerative furnace body 26 is equipped with a pressure gauge 28 (No. 5) and at least two temperature gauges 27 (No. 2). Both the pressure gauge 28 and the temperature gauges 27 are interlocked with the incinerator burner 8 to ensure stable and safe operation of the furnace temperature. There are at least two temperature gauges 27, and their average value is taken during normal system operation.

[0047] By adopting the above-disclosed technical solution of this invention, the following beneficial effects are obtained:

[0048] This invention provides a combustion system for highly toxic and high-concentration organic waste gas. The highly toxic and high-concentration waste gas is introduced into a pipeline burner from a combustion air duct. After prolonged decomposition in a high-temperature heating duct, it enters the furnace of a multi-valve regenerative furnace, improving purification efficiency. The system utilizes a pipeline burner, high-temperature heating duct, and multi-valve regenerative furnace for three-stage combustion. The interlocking control of the multi-valve regenerative incinerator system, the burner heating system, and the pipeline high-temperature combustion system effectively improves purification efficiency. The heat released from the combustion and decomposition of the highly toxic and high-concentration waste gas reduces burner fuel consumption. Reducing the waste gas concentration at the incinerator inlet lowers the risk of equipment overheating; reducing the incinerator inlet dilution air volume and incinerator residence time reduces the incinerator's size and footprint, lowers the material grade at the incinerator inlet, reduces equipment investment costs, and improves system flexibility. The entire combustion system operates stably when treating highly toxic and high-concentration organic waste gas. Control valves and instruments controlling the combustion unit enhance system flexibility, enabling flexible mixing of combustion air and highly toxic and high-concentration waste gas, ensuring safe and complete combustion. The interlocking control of the furnace temperature and the incinerator burner ensures a constant furnace temperature and stable operation of the entire combustion system.

[0049] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A combustion system for highly toxic and high-concentration organic waste gas, characterized in that: This includes a high-toxicity, high-concentration waste gas unit, a fuel unit, a pipeline high-temperature combustion system, a burner heating system, and a multi-valve regenerative incinerator system; The high-temperature combustion system includes a pipeline burner, a No. 1 combustion-supporting unit, and a high-temperature heating pipeline. The highly toxic and high-concentration waste gas unit is connected to the No. 1 combustion-supporting unit. The fuel unit and the No. 1 combustion-supporting unit are both connected to the pipeline burner. The pipeline burner is connected to the high-temperature heating pipeline, and the high-temperature heating pipeline is connected to the multi-valve regenerative incinerator system. The burner heating system includes an incinerator burner and a No. 2 combustion-supporting unit. The fuel unit and the No. 2 combustion-supporting unit are both connected to the incinerator burner, and the incinerator burner is connected to the multi-valve regenerative incinerator system. The No. 1 combustion-supporting unit includes a No. 1 combustion-supporting air source, a gas mixer, and a No. 1 combustion-supporting blower; the No. 1 combustion-supporting air source is connected to the gas mixer, the gas mixer is connected to the No. 1 combustion-supporting blower, and the No. 1 combustion-supporting blower is connected to the pipeline burner. A control valve and a pressure gauge are installed on the connecting pipe between the No. 1 combustion air source and the gas mixer. The control valve and the pressure gauge are interlocked. A concentration detection instrument and an oxygen content instrument are installed on the connecting pipe between the gas mixer and the No. 1 combustion blower. A pressure gauge is installed on the connecting pipe between the No. 1 combustion blower and the pipe burner. The No. 1 pressure gauge, concentration detection instrument, and oxygen content instrument are all interlocked with the No. 1 control valve. The No. 4 pressure gauge is interlocked with the No. 1 combustion fan; The highly toxic and high-concentration waste gas unit includes a highly toxic and high-concentration waste gas source and a highly toxic and high-concentration waste gas buffer device. The highly toxic and high-concentration waste gas source is connected to the highly toxic and high-concentration waste gas buffer device, which is connected to the gas mixer. A control valve No. 2 is installed on the connecting pipe between the high-toxicity, high-concentration waste gas source and the high-toxicity, high-concentration waste gas buffer device; a pressure gauge No. 2 is installed on the high-toxicity, high-concentration waste gas buffer device; a control valve No. 3 and a pressure gauge No. 3 are installed on the connecting pipe between the high-toxicity, high-concentration waste gas buffer device and the gas mixer. Control valve No. 2 is interlocked with pressure gauge No. 2; pressure gauge No. 3, concentration detection instrument, and oxygen content instrument are all interlocked with control valve No.

3. The No. 2 combustion-supporting unit includes a No. 2 combustion-supporting air source and a No. 2 combustion-supporting blower; the No. 2 combustion-supporting air source is connected to the No. 2 combustion-supporting blower, and the No. 2 combustion-supporting blower is connected to the incinerator burner; The multi-valve regenerative thermal incinerator system includes a multi-valve regenerative furnace body and a purging unit; the high-temperature heating pipeline and the incinerator burner are both connected to the multi-valve regenerative furnace body; the purging unit includes a purging air source and a purging fan, the purging air source is connected to the purging fan, and the purging fan is connected to the multi-valve regenerative furnace body; an exhaust pipe is connected to the multi-valve regenerative furnace body, and the exhaust gas generated in the multi-valve regenerative furnace body is discharged through the exhaust pipe.

2. The combustion system for highly toxic and high-concentration organic waste gas according to claim 1, characterized in that: At least two No. 1 temperature gauges are installed on the high-temperature heating pipeline; the No. 1 temperature gauges are interlocked with the pipeline burner.

3. The combustion system for highly toxic and high-concentration organic waste gas according to claim 1, characterized in that: The multi-valve regenerative furnace body is equipped with a No. 5 pressure gauge and at least two No. 2 temperature gauges, both of which are interlocked with the incinerator burner.

4. The combustion system for highly toxic and high-concentration organic waste gas according to claim 1, characterized in that: The combustion system also includes a general exhaust gas unit, which includes a general exhaust gas source and an exhaust gas fan. The general exhaust gas source is connected to the exhaust gas fan, and the exhaust gas fan is connected to the multi-valve regenerative furnace body.

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