High-concentration co tail gas high-efficiency purification and cooling system

Abstract

The utility model relates to industrial tail gas treatment technology, show a kind of high concentration CO tail gas high-efficiency purification cooling system, including calcium carbide furnace, sediment bin, multiple parallel air cooling bin, multiple parallel filter bin, heat storage device and remote control unit;Calcium carbide furnace's gas outlet is connected with sediment bin, the inlet of air cooling bin is connected with the outlet of sediment bin, air cooling bin outlet is connected to coarse gas fan by coarse gas pipeline, the outlet of coarse gas fan is connected to the inlet of filter bin, each filter bin is connected with backflushing pipeline, backflushing pipeline is connected with coal gas gun, the outlet of filter bin is connected to clean gas fan by filter bin outlet pipeline, the outlet of clean gas fan is connected to clean gas outlet pipeline, clean gas outlet pipeline is connected with clean gas direct flue, heat recovery heat exchanger is equipped on the pipeline between air cooling bin and filter bin, and the hot side outlet of heat recovery heat exchanger is connected with heat storage device.

Description

Technical Field

[0001] This utility model relates to the field of industrial exhaust gas treatment technology, and more specifically, to a high-efficiency purification and cooling system for high-concentration CO exhaust gas. Background Technology

[0002] During the calcium carbide production process, the calcium carbide furnace generates a large amount of high-concentration CO exhaust gas. This exhaust gas contains impurities such as dust and harmful gases, and direct emission would cause serious environmental pollution. While existing purification and cooling systems have some effect, they are insufficient in terms of waste heat recovery, failing to fully utilize the heat in the exhaust gas and resulting in energy waste. Furthermore, when dealing with high-concentration CO exhaust gas, the purification efficiency and cooling effect are low, and the long-term stable operation and maintenance costs of the equipment are high. Utility Model Content

[0003] This application provides a high-efficiency purification and cooling system for high-concentration CO exhaust gas, which solves the problem that existing purification and cooling systems fail to fully utilize the heat in the exhaust gas, resulting in energy waste and low purification efficiency and cooling effect.

[0004] This application provides a high-concentration CO tail gas efficient purification and cooling system, including a calcium carbide furnace, a settling chamber, multiple air-cooled chambers connected in parallel, multiple filter chambers connected in parallel, a thermal energy storage device, and a remote control unit. The gas outlet of the calcium carbide furnace is connected to the settling chamber, the inlet of the air-cooled chamber is connected to the outlet of the settling chamber, the outlet of the air-cooled chamber is connected to the rough gas blower through a rough gas pipe, the outlet of the rough gas blower is connected to the inlet of the filter chamber, each filter chamber is connected to a backflush pipe, the backflush pipe is connected to a gas cannon, the outlet of the filter chamber is connected to a clean gas blower through a filter chamber outlet pipe, the outlet of the clean gas blower is connected to a clean gas outlet pipe, the clean gas outlet pipe is connected to a clean gas direct exhaust chimney, a waste heat recovery heat exchanger is installed on the pipe between the air-cooled chamber and the filter chamber, and the hot side outlet of the waste heat recovery heat exchanger is connected to the thermal energy storage device.

[0005] Preferably, a vibration motor is provided at the bottom of the sedimentation chamber and the filtration chamber.

[0006] Preferably, the sedimentation chamber and the bottom pipe of the filter chamber are equipped with ash discharge valves, and a scraper conveyor is provided below the ash discharge valves.

[0007] Preferably, the scraper conveyor is connected to a dust collection device.

[0008] Preferably, the calcium carbide furnace, the air-cooling chamber, and the filter chamber are all equipped with pressure sensors and temperature sensors.

[0009] Preferably, the remote control unit is electrically connected to the ash discharge valve, the pressure sensor, the temperature sensor, the waste heat recovery heat exchanger, and the thermal energy storage device.

[0010] Preferably, the waste heat recovery heat exchanger adopts a plate heat exchange structure.

[0011] Preferably, the thermal energy storage device uses a phase change energy storage material.

[0012] As can be seen from the above technical solution, this application provides a high-concentration CO tail gas high-efficiency purification and cooling system. In use, the high-concentration CO tail gas generated by the calcium carbide furnace enters the settling chamber, where large particles of dust are separated by gravity settling. The tail gas then enters multiple parallel air-cooled chambers, where its temperature is reduced through cooling. A new type of high-efficiency heat exchange material is used to improve heat exchange efficiency. The tail gas passes through a waste heat recovery heat exchanger on the pipeline between the air-cooled chamber and the filter chamber, transferring waste heat to the cold air entering the system. Simultaneously, a heat energy storage device stores the recovered heat energy for use in other processes. A vibrating motor at the bottom of the settling chamber vibrates periodically to prevent dust accumulation, an ash discharge valve periodically discharges ash, and a scraper conveyor removes dust. Dust is conveyed to a dust collection device, and exhaust gas enters multiple filter chambers through a coarse air blower. High-temperature resistant dust collection bags are used to further improve the purification effect and deeply remove dust. The gas cannon periodically back-flushes to remove dust from the surface of the filter bags. The purified gas is then conveyed to the purified gas outlet pipe through a purified gas blower and finally discharged through a purified gas direct exhaust chimney. The remote control unit monitors the pressure and temperature of the exhaust gas in real time through pressure and temperature sensors to achieve automated control and safety protection. The remote control unit automatically adjusts the heat exchange efficiency of the waste heat recovery heat exchanger and the charging and discharging process of the heat storage device according to the temperature of the exhaust gas and the system requirements to achieve efficient recovery and rational utilization of waste heat.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model effectively removes dust and harmful gases from exhaust gas through deep purification via multi-stage air-cooling chambers and filter chambers, while achieving rapid cooling. The purification efficiency and cooling effect are significantly better than existing technologies.

[0014] 2. The waste heat recovery device of this utility model can make full use of the waste heat in the exhaust gas to preheat the cold air entering the system, and store the recovered heat energy for use in other process steps, which significantly improves energy utilization efficiency and reduces production costs.

[0015] 3. The remote control unit and sensor network of this utility model realize the automated operation and monitoring of the system, and the intelligent controller realizes the automatic adjustment of the waste heat recovery device, thereby improving operating efficiency and safety and reducing manual operation costs.

[0016] 4. The design of the vibrating motor and scraper conveyor in this utility model effectively prevents dust accumulation and blockage, and extends the service life of the equipment.

[0017] In summary, a high-concentration CO exhaust gas high-efficiency purification and cooling system effectively removes dust and harmful gases from the exhaust gas through deep purification in multi-stage air-cooled chambers and filter chambers, while achieving rapid cooling. The purification efficiency and cooling effect are significant. The waste heat recovery device can make full use of the waste heat in the exhaust gas to preheat the cold air entering the system and store the recovered heat energy for use in other process steps, significantly improving energy utilization efficiency and reducing production costs. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 A schematic diagram of a high-concentration CO exhaust gas high-efficiency purification and cooling system provided by this utility model; Figure 2 This is a schematic diagram of a high-concentration CO exhaust gas high-efficiency purification and cooling system provided by this utility model.

[0020] The reference numerals in the detailed embodiments are as follows: 1. Calcium carbide furnace; 2. Settling chamber; 3. Air-cooled chamber; 4. Vibrating motor; 5. Ash discharge valve; 6. Coarse gas pipeline; 7. Coarse gas blower; 8. Filter chamber; 9. Backflush pipeline; 10. Filter chamber outlet pipeline; 11. Clean gas blower; 12. Clean gas outlet pipeline; 13. Clean gas direct discharge chimney; 14. Gas cannon; 15. Scraper conveyor; 16. Pressure sensor; 17. Temperature sensor; 18. Waste heat recovery heat exchanger; 19. Thermal energy storage device; 20. Remote control unit; 21. Dust collection device. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] See Figure 1-2This application proposes a high-efficiency purification and cooling system for high-concentration CO exhaust gas. To address the problems of existing purification and cooling systems failing to fully utilize the heat in the exhaust gas, resulting in energy waste and low purification efficiency and cooling effect, this system effectively removes dust and harmful gases from the exhaust gas through deep purification via multi-stage air-cooled chambers and filter chambers. Simultaneously, it achieves rapid cooling, demonstrating significant purification efficiency and cooling effect. The waste heat recovery device fully utilizes the waste heat in the exhaust gas to preheat the cold air entering the system and stores the recovered heat energy for use in other processes, significantly improving energy utilization efficiency and reducing production costs.

[0023] Specifically, a high-concentration CO exhaust gas high-efficiency purification and cooling system includes a calcium carbide furnace 1, a settling chamber 2, multiple parallel air-cooled chambers 3, multiple parallel filter chambers 8, a thermal energy storage device 19, and a remote control unit 20. The outlet of the calcium carbide furnace 1 is connected to the settling chamber 2, and the high-concentration CO exhaust gas generated by the calcium carbide furnace 1 enters the settling chamber 2, where large particles of dust are separated by gravity settling. The inlet of the air-cooled chamber 3 is connected to the outlet of the settling chamber 2, and the exhaust gas enters the multiple parallel air-cooled chambers 3, where the exhaust gas temperature is reduced by cooling. The outlet of the air-cooled chamber 3 is connected to the air blower 7 via a coarse air pipe 6. The outlet of the coarse air blower 7 is connected to the inlet of the filter chamber 8. The filter chamber 8 uses high-temperature resistant dust collector bags made of nano-grade filter material, which has higher filtration accuracy and lower resistance, and can deeply remove dust and harmful gases from the exhaust gas. Vibration motors 4 are installed at the bottom of the settling chamber 2 and the filter chamber 8. The vibration motors 4 vibrate periodically, and the ash discharge valve 5 discharges ash periodically, effectively preventing dust accumulation in the settling chamber 2 and ensuring proper settling. For the normal operation of settling chamber 2, ash discharge valves 5 are installed on the bottom pipes of settling chamber 2 and filter chamber 8. A scraper conveyor 15 is installed below the ash discharge valve 5. The scraper conveyor 15 is connected to a dust collection device 21. The collected dust is transported to the designated dust collection device 21 through the scraper conveyor 15 to achieve the harmless treatment of dust. Pressure sensors 16 and temperature sensors 17 are installed on the calcium carbide furnace 1, air-cooled chamber 3 and filter chamber 8. The remote control unit 20 is electrically connected to the ash discharge valve 5, pressure sensor 16, temperature sensor 17, waste heat recovery heat exchanger 18 and thermal energy storage device 19. The remote control unit 20 realizes the automated monitoring and operation of the entire system through the sensor network, including pressure sensor 16, temperature sensor 17, etc., to monitor the pressure and temperature content of the exhaust gas in real time to ensure the safe operation of the system. According to the temperature of the exhaust gas and the needs of the system, the heat exchange efficiency of the waste heat recovery heat exchanger 18 and the charging and discharging process of the thermal energy storage device 19 are automatically adjusted to achieve efficient recovery and rational utilization of waste heat. Each filter chamber 8 is connected to a backflushing pipe 9, which is connected to a gas cannon 14. The backflushing pipe 9 of the filter chamber 8 is periodically backflushed by the gas cannon 14 to remove dust from the surface of the filter bags, extend the service life of the filter bags, and improve the purification efficiency. The outlet of the filter chamber 8 is connected to the clean air fan 11 through the filter chamber outlet pipe 10. The outlet of the clean air fan 11 is connected to the clean air outlet pipe 12. The clean air outlet pipe 12 is connected to the clean air direct exhaust chimney 13. The purified clean air is transported to the clean air outlet pipe 12 through the clean air fan 11 and finally discharged through the clean air direct exhaust chimney 13. Waste heat recovery heat exchange is installed on the pipe between the air-cooled chamber 3 and the filter chamber 8. The exhaust gas passes through the waste heat recovery heat exchanger 18 on the pipeline between the air-cooled chamber 3 and the filter chamber 8, transferring the waste heat to the cold air entering the system. The waste heat recovery heat exchanger 18 adopts a plate heat exchange structure, which improves heat exchange efficiency and reduces equipment size and floor space. The hot side outlet of the waste heat recovery heat exchanger 18 is connected to the thermal energy storage device 19. The thermal energy storage device 19 stores the recovered thermal energy for use in other process steps. The thermal energy storage device 19 uses phase change energy storage material. Phase change energy storage material has high energy storage density and stable thermal performance, and can efficiently store and release thermal energy for heating production water or other process steps that require thermal energy.

[0024] As can be seen from the above technical solution, in the operation of a high-concentration CO tail gas high-efficiency purification and cooling system, the high-concentration CO tail gas generated by the calcium carbide furnace 1 enters the settling chamber 2, where large particles of dust are separated by gravity settling. The tail gas then enters multiple parallel air-cooled chambers 3, where the temperature is reduced by cooling. A new type of high-efficiency heat exchange material is used to improve heat exchange efficiency. The tail gas passes through a waste heat recovery heat exchanger 18 on the pipeline between the air-cooled chamber 3 and the filter chamber 8, transferring waste heat to the cold air entering the system. At the same time, the heat energy storage device 19 stores the recovered heat energy for use in other process steps. The vibration motor 4 at the bottom of the settling chamber 2 vibrates periodically to prevent dust accumulation. The ash discharge valve 5 discharges ash periodically, and the scraper conveyor 15 transports the dust to the dust collection device. 21. The exhaust gas enters multiple filter chambers 8 through the coarse air blower 7, using high-temperature resistant dust removal bags to further improve the purification effect and deeply remove dust and harmful gases. The gas cannon 14 periodically back-flushes to remove dust from the surface of the filter bags. The purified gas is transported to the purified gas outlet pipe 12 through the purified gas blower 11 and finally discharged through the purified gas direct exhaust chimney 13. The remote control unit 20 monitors the pressure and temperature content of the exhaust gas in real time through the pressure sensor 16 and the temperature sensor 17 to achieve automated control and safety protection. The remote control unit 20 automatically adjusts the heat exchange efficiency of the waste heat recovery heat exchanger 18 and the charging and discharging process of the heat energy storage device 19 according to the temperature of the exhaust gas and the needs of the system to achieve efficient recovery and rational utilization of waste heat.

[0025] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the applications disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and incorporate common knowledge or customary techniques in the art disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of the invention is indicated by the claims.

[0026] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model.

Claims

1. A high-efficiency purification and cooling system for high-concentration CO exhaust gas, characterized in that: It includes a calcium carbide furnace (1), a settling chamber (2), multiple air-cooled chambers connected in parallel (3), multiple filter chambers connected in parallel (8), a thermal energy storage device (19), and a remote control unit (20). The gas outlet of the calcium carbide furnace (1) is connected to the settling chamber (2), the inlet of the air-cooled chamber (3) is connected to the outlet of the settling chamber (2), the outlet of the air-cooled chamber (3) is connected to the air blower (7) through the air pipe (6), the outlet of the air blower (7) is connected to the inlet of the filter chamber (8), each filter chamber (8) is connected to the backflush pipe (9), the backflush pipe (9) is connected to the gas cannon (14), the outlet of the filter chamber (8) is connected to the clean air blower (11) through the filter chamber outlet pipe (10), the outlet of the clean air blower (11) is connected to the clean air outlet pipe (12), the clean air outlet pipe (12) is connected to the clean air direct exhaust chimney (13), a waste heat recovery heat exchanger (18) is provided on the pipe between the air-cooled chamber (3) and the filter chamber (8), and the hot side outlet of the waste heat recovery heat exchanger (18) is connected to the thermal energy storage device (19).

2. The high-concentration CO exhaust gas high-efficiency purification and cooling system according to claim 1, characterized in that: Vibration motors (4) are installed at the bottom of the settling chamber (2) and the filter chamber (8).

3. The high-concentration CO exhaust gas high-efficiency purification and cooling system according to claim 2, characterized in that: The sedimentation chamber (2) and the filter chamber (8) are equipped with ash discharge valves (5) on the bottom pipes, and a scraper conveyor (15) is provided below the ash discharge valves (5).

4. The high-concentration CO exhaust gas high-efficiency purification and cooling system according to claim 3, characterized in that: The scraper conveyor (15) is connected to a dust collection device (21).

5. The high-concentration CO exhaust gas high-efficiency purification and cooling system according to claim 4, characterized in that: Pressure sensors (16) and temperature sensors (17) are provided on the calcium carbide furnace (1), the air-cooled chamber (3), and the filter chamber (8).

6. The high-concentration CO exhaust gas high-efficiency purification and cooling system according to claim 5, characterized in that: The remote control unit (20) is electrically connected to the ash discharge valve (5), the pressure sensor (16), the temperature sensor (17), the waste heat recovery heat exchanger (18), and the thermal energy storage device (19).

7. The high-concentration CO exhaust gas high-efficiency purification and cooling system according to claim 1, characterized in that: The waste heat recovery heat exchanger (18) adopts a plate heat exchange structure.

8. The high-concentration CO exhaust gas high-efficiency purification and cooling system according to claim 1, characterized in that: The thermal energy storage device (19) uses phase change energy storage material.

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