Sleeve kiln driving flue gas circulating system

Abstract

The utility model provides a driving flue gas circulating system of a sleeve kiln. The driving flue gas circulating system comprises a flue gas collecting device (1), a high-temperature waste gas fan (2), a heat exchanger (3) and the like. The flue gas collecting device (1) is connected with a kiln body and is connected to the driving fan (7) through the high-temperature waste gas fan (2), the heat exchanger (3), the water cooler (4), the dust remover (5) and the fan (6), and the air outlet end of the driving fan (7) is connected to the ejector (8) through the heat exchanger (3) and is connected to the middle section of the kiln. The air inlet end of the driving fan (7) is connected with a cooling fan (11), and the air inlet ends of the fan (6) and the driving fan (7) are provided with temperature induction meters (10) which are connected with a driving fan control module (9). The module drives the cooling fan (11) to cool when the temperature is not less than 70 DEG C, alarms when the temperature is not less than 75 DEG C, and drives the fan (7) to jump when the temperature is not less than 85 DEG C. According to the system, the energy utilization efficiency is improved, the environmental pollution is reduced, and accurate temperature control and automatic operation are realized.

Description

Technical Field

[0001] The utility model relates to the field of industrial kilns for calcining limestone, in particular to a sleeve kiln driven flue gas circulation system. Background Art

[0002] Industrial production, especially during the operation of sleeve kilns, generates large quantities of high-temperature flue gas. Traditional treatment methods often involve direct discharge, which not only results in significant energy waste but also causes serious environmental pollution. With the growing awareness of energy conservation and environmental protection, people are seeking more efficient and environmentally friendly flue gas treatment and utilization methods. Early flue gas treatment systems may suffer from inefficiency, insufficient heat recovery, and suboptimal purification effects. For example, some simple flue gas treatment devices only perform preliminary dust removal, failing to fully utilize the heat energy in the flue gas, resulting in energy waste. Other systems lack precise temperature control, easily disrupting normal equipment operation due to excessively high temperatures or reducing energy recovery efficiency due to excessively low temperatures. Furthermore, previous systems lacked automated control and were unable to intelligently adjust flue gas temperature and other parameters in real time, compromising the overall system's operational stability and reliability. To address these issues, the development of a more advanced, efficient, and intelligent sleeve kiln-driven flue gas recirculation system is becoming increasingly important, maximizing energy utilization and effectively protecting the environment. Utility Model Content

[0003] The purpose of the utility model is to provide a sleeve kiln driven flue gas circulation system, which solves the above problems by collecting, exchanging heat and recycling the flue gas and by driving the fan control module to monitor and control the flue gas value in real time.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A sleeve kiln driven flue gas circulation system, comprising a flue gas collecting device (1), a high-temperature exhaust gas fan (2), a heat exchanger (3), a driving fan (7), and an ejector (8), and is characterized in that it also comprises a water cooler (4), a dust collector (5), a fan (6), a driving fan control module (9), a temperature sensor (10), and a cooling fan (11); the flue gas collecting device (1) has a gas collecting end tightly connected to the flue gas outlet of the kiln body, and the other end is connected to the high-temperature exhaust gas fan (2) through a pipeline, and the high-temperature exhaust gas fan The machine (2) is connected to the heat exchanger (3) through a pipeline, and after heat exchange, it is connected to the water cooler (4), the dust collector (5), and the fan (6) in sequence through the pipeline. The fan (6) transports the smoke after cooling and dust removal to the air inlet of the driving fan (7) through the pipeline. The air outlet of the driving fan (7) exchanges heat with the smoke of the above-mentioned high-temperature exhaust gas fan (2) through the heat exchanger (3). After heat exchange in the heat exchanger, the smoke is connected to the ejector (8) through a pipeline. The ejector (8) is connected to the middle section of the sleeve kiln through a pipeline.

[0006] The air inlet end of the driving fan (7) has another branch pipe connected to the air outlet end of the cooling fan (11).

[0007] A temperature sensor (10) is installed in the pipe between the fan (6) and the driving fan (7), and the temperature sensor (10) uses a thermal resistance type to collect temperature data.

[0008] The fan driving control module (9) is connected to the temperature sensor (10) and the cooling fan (11) via signals.

[0009] The water cooler (4) and the dust collector (5) are equipped with an air pump, and the air pump drives the flue gas to flow by creating negative pressure.

[0010] When the temperature sensor (10) receives a temperature of ≥70°C, the fan driving control module (9) drives the cooling fan (11) to open and cool the flue gas; when the temperature sensor (10) receives a temperature of ≥75°C, an alarm is issued; when the temperature is ≥85°C, the fan driving control module (7) is tripped and stopped.

[0011] First, the gas collecting end of the flue gas collection device (1) is tightly connected to the flue gas outlet of the kiln body to collect the flue gas generated by the kiln body. The other end of the flue gas is transported to the high-temperature exhaust gas fan (2) through a pipeline. After the high-temperature exhaust gas fan (2) receives the flue gas, it is transported to the heat exchanger (3) through a pipeline for heat exchange. The flue gas after heat exchange is cooled by the water cooler (4) and dusted by the dust collector (5). The fan (6) then transports the cooled and dusted flue gas through a pipeline to the air inlet end of the driving fan (7).

[0012] A temperature sensor (10) is installed at the air inlet end of the fan (6) and the driving fan (7), and the module transmits the sensed temperature signal to the driving fan control module (9).

[0013] When the temperature received by the temperature sensor (10) reaches 70°C, the fan control module (9) drives the cooling fan (11) to open to cool the flue gas; when the temperature reaches 75°C, the system will issue an alarm; and when the temperature reaches 85°C, the fan (7) will stop.

[0014] The flue gas at the outlet end of the driving fan (7) will pass through the heat exchanger (3) to exchange heat with the high-temperature flue gas of the high-temperature exhaust gas fan (2), and then be connected to the ejector (8) through a pipeline. Finally, the ejector (8) will send the treated flue gas to the middle section of the sleeve kiln through the pipeline, completing the entire flue gas circulation process.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] Improve energy utilization efficiency: By collecting, exchanging heat and recycling the flue gas, energy waste is reduced and the energy utilization efficiency of the sleeve kiln is improved.

[0017] Reduce environmental pollution: The dust collector in the system can remove dust and impurities in the flue gas, reducing pollution to the environment.

[0018] Accurate temperature control: The temperature sensor and fan drive control module can monitor and control the flue gas temperature in real time, avoiding the impact of excessive temperature on equipment and system operation.

[0019] Automatic control: The system's automatic control function can improve operational stability and reliability and reduce manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a flue gas circulation system driven by a sleeve kiln in the utility model;

[0021] In the figure: 1. Flue gas collection device; 2. High-temperature exhaust gas fan; 3. Heat exchanger; 4. Water cooler; 5. Dust collector; 6. Fan; 7. Drive fan; 8. Ejector; 9. Drive fan control module; 10. Temperature sensor; 11. Cooling fan. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be fully described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] As shown in the figure, a sleeve kiln driven flue gas circulation system includes a flue gas collecting device (1), a high-temperature exhaust gas fan (2), a heat exchanger (3), a driving fan (7), and an ejector (8). It is also characterized in that it also includes a water cooler (4), a dust collector (5), a fan (6), a driving fan control module (9), a temperature sensor (10), and a cooling fan (11); the flue gas collecting device (1) has a gas collecting end tightly connected to the flue gas outlet of the kiln body, and the other end is connected to the high-temperature exhaust gas fan (2) through a pipeline. The high-temperature exhaust gas fan (11) is connected to the high-temperature exhaust gas fan (2) through a pipeline. The air blower (2) is connected to the heat exchanger (3) through a pipeline, and after heat exchange, is connected to the water cooler (4), the dust collector (5), and the blower (6) in sequence through the pipeline. The blower (6) transports the smoke after cooling and dust removal to the air inlet of the driving blower (7) through the pipeline. The air outlet of the driving blower (7) exchanges heat with the smoke of the high-temperature exhaust gas blower (2) through the heat exchanger (3). After heat exchange in the heat exchanger, the smoke is connected to the ejector (8) through a pipeline. The ejector (8) is connected to the middle section of the sleeve kiln through a pipeline.

[0024] The air inlet end of the driving fan (7) has another branch pipe connected to the air outlet end of the cooling fan (11).

[0025] A temperature sensor (10) is installed in the pipe between the fan (6) and the driving fan (7), and the temperature sensor (10) uses a thermal resistance type to collect temperature data.

[0026] The fan driving control module (9) is connected to the temperature sensor (10) and the cooling fan (11) via signals.

[0027] The water cooler (4) and the dust collector (5) are equipped with an air pump, and the air pump drives the flue gas to flow by creating negative pressure.

[0028] When the temperature sensor (10) receives a temperature of ≥70°C, the fan driving control module (9) drives the cooling fan (11) to open and cool the flue gas; when the temperature sensor (10) receives a temperature of ≥75°C, an alarm is issued; when the temperature is ≥85°C, the fan driving control module (7) is tripped and stopped.

[0029] First, the gas collecting end of the flue gas collection device (1) is tightly connected to the flue gas outlet of the kiln body to collect the flue gas generated by the kiln body. The other end of the flue gas is transported to the high-temperature exhaust gas fan (2) through a pipeline. After the high-temperature exhaust gas fan (2) receives the flue gas, it is transported to the heat exchanger (3) through a pipeline for heat exchange. The flue gas after heat exchange is cooled by the water cooler (4) and dusted by the dust collector (5). The fan (6) then transports the cooled and dusted flue gas through a pipeline to the air inlet end of the driving fan (7).

[0030] A temperature sensor (10) is installed at the air inlet end of the fan (6) and the driving fan (7), and the module transmits the sensed temperature signal to the driving fan control module (9).

[0031] When the temperature received by the temperature sensor (10) reaches 70°C, the fan control module (9) drives the cooling fan (11) to open to cool the flue gas; when the temperature reaches 75°C, the system will issue an alarm; and when the temperature reaches 85°C, the fan (7) will stop.

[0032] The flue gas at the outlet end of the driving fan (7) will pass through the heat exchanger (3) to exchange heat with the high-temperature flue gas of the high-temperature exhaust gas fan (2), and then be connected to the ejector (8) through a pipeline. Finally, the ejector (8) will send the treated flue gas to the middle section of the sleeve kiln through the pipeline, completing the entire flue gas circulation process.

Claims

1. A sleeve kiln driven flue gas circulation system, comprising a flue gas collecting device (1), a high-temperature exhaust gas fan (2), a heat exchanger (3), a driving fan (7), and an ejector (8), and is characterized in that The invention also includes a water cooler (4), a dust collector (5), a fan (6), a drive fan control module (9), a temperature sensor (10), and a cooling fan (11); the gas collecting end of the flue gas collecting device (1) is tightly connected to the flue gas outlet of the kiln body, and the other end is connected to the high-temperature exhaust gas fan (2) through a pipeline, the high-temperature exhaust gas fan (2) is connected to the heat exchanger (3) through a pipeline, and is connected to the water cooler (4), the dust collector (5), and the fan (6) in sequence through pipelines after heat exchange, the fan (6) transports the cooled and dusted flue gas to the air inlet end of the drive fan (7) through a pipeline, the air outlet end of the drive fan (7) exchanges heat with the flue gas of the high-temperature exhaust gas fan (2) through the heat exchanger (3), and the flue gas after heat exchange in the heat exchanger is connected to the ejector (8) through a pipeline, and the ejector (8) is connected to the middle section of the sleeve kiln through a pipeline.

2. The driven flue gas circulation system for a sleeve kiln according to claim 1, characterized in that: The air inlet end of the driving fan (7) has another branch pipe connected to the air outlet end of the cooling fan (11).

3. The driven flue gas circulation system for a sleeve kiln according to claim 1, characterized in that: A temperature sensor (10) is installed in the pipe between the fan (6) and the driving fan (7), and the temperature sensor (10) uses a thermal resistance type to collect temperature data.

4. The driven flue gas circulation system for a sleeve kiln according to claim 1, characterized in that: The fan driving control module (9) is connected to the temperature sensor (10) and the cooling fan (11) via signals.

5. The driven flue gas circulation system for a sleeve kiln according to claim 1, characterized in that: The water cooler (4) and the dust collector (5) are equipped with an air pump, and the air pump drives the flue gas to flow by creating negative pressure.

6. The driven flue gas circulation system for a sleeve kiln according to claim 1, characterized in that: When the temperature sensor (10) receives a temperature of ≥70°C, the fan driving control module (9) drives the cooling fan (11) to open and cool the flue gas; when the temperature sensor (10) receives a temperature of ≥75°C, an alarm is issued; when the temperature is ≥85°C, the fan driving control module (7) is tripped and stopped.

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