Combustion fuel pretreatment device
By introducing the temperature flue gas of the cement kiln chimney into the combustion fuel pretreatment device, the replacement fuel is dried and processed, and the problem of high cost of alternative fuel drying treatment in the prior art is solved, and an efficient and economical fuel drying effect is achieved.
Patent Information
- Application Number
- CN202422019358.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In the prior art, the drying treatment cost of alternative fuel is relatively high, and the fossil fuel consumes heat sources, which is relatively high in energy consumption and cost.
A combustion fuel pretreatment device is designed, by introducing the temperature flue gas of the cement kiln chimney into the device body, and drying the conveyed alternative combustion fuel using the flue gas to achieve reuse of heat without utilization.
The drying treatment of alternative combustion fuel is realized, the cost of combustion fuel drying treatment is reduced, and the waste heat flue gas discharged from the cement kiln chimney is effectively utilized.
Smart Images
Figure CN223020318U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of waste - to - fuel treatment, and more specifically, it relates to a pretreatment device for combustion fuel. Background Art
[0002] Industrial and agricultural wastes with calorific value such as straw, fabric, rice husk, and fiberglass slag can all serve as alternative fuels to replace coal for combustion. However, the moisture content of the alternative fuel needs to be pretreated before entering the kiln; otherwise, it will increase coal consumption and lose the meaning of the alternative fuel. Traditional drying processes mainly use methods such as electric heating, natural gas heating, and steam heating, which consume fossil fuels to generate heat sources, resulting in relatively high energy consumption and costs, and thus a relatively high drying cost for alternative fuels.
[0003] There is a technology with the name "High - efficiency and energy - saving grain dryer and drying method" and the publication number "103749670B" in the prior art. The dryer of this technology adopts a new heat source design provided by an air - energy heat pump. It includes an air - energy dehumidifying heat pump, a main housing, a secondary housing, a heat exchanger, a fan, an intelligent controller, a solenoid valve, a temperature and humidity sensor, a stacking bed, a dehumidifying mechanism, and a warehouse door; the intelligent controller obtains the monitored multi - point average temperature and humidity signals in the room through the temperature and humidity sensors, and each solenoid valve is electrically connected to the intelligent controller to realize the intelligent operation of the dryer. Using this high - efficiency and energy - saving grain dryer and drying method to bake grains has the characteristics of high efficiency, energy saving, intelligent operation, and good grain quality.
[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is: aiming at the deficiencies of the prior art, to provide a combustion fuel pretreatment device with a simple structure, which can conveniently and reliably realize the drying treatment of alternative combustion fuels, without additional energy consumption, and effectively reduce the drying treatment cost of combustion fuels.
[0006] To solve the above - mentioned technical problems, the technical solution adopted by the utility model is as follows:
[0007] The utility model is a combustion fuel pretreatment device. The device body is connected to the cement kiln chimney through a conveying pipeline and also through a return channel. A conveying component is arranged inside the device body, a material - turning component is arranged above the conveying component, a clean water pipeline extends into the device body, and a plurality of nozzles are arranged on the clean water pipeline at intervals. The clean water pipeline is located near the conveying component. A return valve and an induced draft fan are arranged on the return channel, and the return valve is arranged between the device body and the induced draft fan.
[0008] The described conveying component includes a driving motor, a driven motor, and a conveyor belt. An inlet rack is arranged outside the inlet of the device body, and the driving motor is installed on the inlet rack. An outlet rack is arranged outside the outlet of the device body, and the driven motor is installed on the outlet rack. The conveyor belt is sleeved on the driving motor and the driven motor, and a cloth distributor is arranged on the inlet rack.
[0009] The described conveying pipeline includes a main pipeline, multiple first-level branch pipelines, and multiple second-level branch pipelines. One end of the main pipeline is connected to the cement kiln chimney, the other end of the main pipeline is connected to one end of the multiple first-level branch pipelines, and the other end of each first-level branch pipeline is connected to the multiple second-level branch pipelines.
[0010] The described loop channel includes a main loop channel and multiple loop channel branch pipes. One end of each loop channel branch pipe is connected to the device body, the other end of each loop channel branch pipe is connected to the main loop channel, and the main loop channel is connected to the cement kiln chimney.
[0011] The described turning component includes component rods, the component rods are connected to the device body, multiple motors are arranged on the component rods, and each motor is connected to a turning impeller.
[0012] A loop valve and a draft fan are respectively arranged on each loop channel branch pipe, and the loop valve on each loop channel branch pipe is located between the device body and the draft fan on this loop channel branch pipe.
[0013] A conveying fan and a conveying valve are arranged on the described conveying pipeline.
[0014] The described main pipeline is connected to a cold air pipeline, and a cold air valve is arranged on the cold air pipeline.
[0015] A humidity sensor and a temperature sensor are arranged inside the described device body, and the humidity sensor and the temperature sensor are respectively connected to a control component.
[0016] The described conveying fan, conveying valve, cold air valve, driving motor, draft fan, and cloth distributor are respectively connected to a control component.
[0017] Adopting the technical solution of the present utility model, the working principle and beneficial effects are as described below:
[0018] The combustion fuel pretreatment device described in the present utility model makes full use of the temperature-bearing flue gas from the cement kiln chimney. The flue gas from the cement kiln chimney enters the device body, and a conveying component is arranged in the device body to convey the substitute combustion fuel through the device body. During the process of the substitute combustion fuel passing through the device body, the temperature-bearing flue gas enters the device body to dry the substitute combustion fuel. Since the tail gas discharged from the chimney of the cement kiln still has a remaining temperature of about 100 °C, this waste heat flue gas is generally directly discharged into the atmosphere through the chimney, resulting in waste of heat. The present utility model leads a part of the flue gas from the chimney of the cement kiln to the device body for drying the substitute combustion fuel conveyed through the device body. The flue gas temperature of the chimney of the cement kiln is not high and has no utilization value in other occasions. However, by introducing the device body of the present utility model, the drying of the substitute combustion fuel can be effectively realized. After drying the substitute combustion fuel, the flue gas is directly discharged or introduced into the cement kiln chimney and then discharged. In this way, the reuse of the heat with no utilization value is achieved. The clean water pipeline is provided to supply water to the conveyor belt of the conveying component for cleaning the conveyor belt. A circuit valve and a draft fan are arranged on the circuit channel. When a single draft fan needs to be overhauled, the circuit valve is closed, that is, the exhaust of this pipeline is disconnected, while the other pipelines still work normally. Brief Description of the Drawings
[0019] The following briefly describes the content expressed by each drawing in this specification and the marks in the drawings:
[0020] Figure 1 It is a schematic structural diagram of the combustion fuel pretreatment device described in the present utility model;
[0021] The marks in the drawings are respectively: 1. Device body; 2. Cement kiln chimney; 3. Turning part; 4. Clean water pipeline; 5. Circuit valve; 6. Draft fan; 7. Driving motor; 8. Driven motor; 9. Conveyor belt; 10. Feeding rack; 11. Discharging rack; 12. Distributor; 13. Main pipeline; 14. Primary branch pipeline; 15. Secondary branch pipeline; 16. Main circuit channel; 17. Branch circuit channel; 18. Component rod; 19. Motor; 20. Turning impeller; 21. Conveying fan; 22. Conveying valve; 23. Cold air pipeline; 24. Cold air valve; 25. Cleaning brush; 26. Fire water pipeline. Detailed Embodiments
[0022] The following further details the specific embodiments of the present utility model, such as the shapes, structures, mutual positions and connection relationships of the various components involved, the functions of each part, and the working principles, etc., by describing the embodiments with reference to the drawings:
[0023] As shown in the attached Figure 1As shown in the figure, the utility model is a combustion fuel pretreatment device. The device body 1 is connected to the cement kiln chimney 2 through a conveying pipeline. The device body 1 is connected to the cement kiln chimney 2 through a loop channel. A conveying component is arranged inside the device body 1, and a material turning component 3 is arranged above the conveying component. The clean water pipeline 4 extends into the device body 1. A plurality of nozzles are arranged on the clean water pipeline 4 at intervals. The clean water pipeline 4 is located near the conveying component. A loop valve 5 and a draft fan 6 are arranged on the loop channel. The loop valve 5 is arranged between the device body 1 and the draft fan 6. The above structure proposes an improved technical solution for the deficiencies in the prior art. The improvement point of the utility model is to make full use of the temperature-bearing flue gas of the cement kiln chimney, introduce the flue gas of the cement kiln chimney into the device body, and a conveying component is arranged inside the device body for conveying the substitute combustion fuel through the device body. During the process of the substitute combustion fuel passing through the device body, the temperature-bearing flue gas enters the device body to dry the substitute combustion fuel. Because the tail gas discharged from the chimney of the cement kiln still has a residual temperature of about 100 °C, this waste heat flue gas is generally directly discharged into the atmosphere by the chimney, resulting in waste of heat. The utility model introduces part of the flue gas of the cement kiln chimney to the device body 1 for drying the substitute combustion fuel conveyed through the device body. The flue gas temperature of the cement kiln chimney is not high and has no utilization value in other occasions. However, by introducing the device body of the utility model, the drying of the substitute combustion fuel can be effectively realized. After drying the substitute combustion fuel, the flue gas is directly discharged or introduced into the cement kiln chimney and then discharged. In this way, the reuse of the heat with no utilization value is realized. The setting of the clean water pipeline 4 is used to supply water to the conveyor belt of the conveying component for cleaning the conveyor belt. A loop valve 5 and a draft fan 6 are arranged on the loop channel. When a single draft fan needs to be overhauled, the loop valve is closed, that is, the exhaust of this pipeline is disconnected, and at this time, the other pipelines still work normally. The combustion fuel pretreatment device described in the utility model has a simple structure, can conveniently and reliably realize the drying treatment of the substitute combustion fuel, does not require additional energy consumption, and effectively reduces the cost of drying the combustion fuel.
[0024] The described conveying component includes a driving motor 7, a driven motor 8, a conveyor belt 9, a driving roller, and a driven roller. An inlet frame 10 is arranged outside the inlet of the device body 1. The driving motor 7 is installed on the inlet frame 10. The driving roller is fixedly connected to the driving motor. An outlet frame 11 is arranged outside the outlet of the device body 1. The driven roller 8 is installed on the outlet frame 11. The conveyor belt 9 is sleeved on the driving roller and the driven roller connected to the driving motor 7. A distributor 12 is arranged on the inlet frame 10. In the above structure, when the driving motor rotates, the driving roller and the driven roller cooperate to drive the conveyor belt to rotate continuously. The material distributed by the distributor on the conveyor belt at one end of the inlet enters the device body under the drive of the conveyor belt. The substitute combustion fuel passing through the device body is dried under the action of the temperature-bearing flue gas. After continuous drying for a period of time, the substitute combustion fuel exits from the outlet.
[0025] The described conveying pipeline includes a main pipeline 13, multiple first-level branch pipelines 14, and multiple second-level branch pipelines 15. One end of the main pipeline 13 is connected to the cement kiln chimney 2, and the other end of the main pipeline 13 is connected to one end of the multiple first-level branch pipelines 14. The other end of each first-level branch pipeline 14 is connected to the multiple second-level branch pipelines 15. With the above structure, flue gas is supplied to different parts of the device body through the conveying pipeline, which helps the flue gas quickly fill the inside of the device body, thereby improving the drying efficiency of the temperature-bearing flue gas for drying the substitute combustion fuel conveyed by the conveyor belt.
[0026] The described loop channel includes a main loop channel 16 and multiple loop channel branch pipes 17. One end of each loop channel branch pipe 17 is connected to the device body 1, and the other end of each loop channel branch pipe 17 is connected to the main loop channel 16. The main loop channel 16 is connected to the cement kiln chimney 2. With the above structure, for the flue gas after drying the substitute combustion fuel, under the action of the induced draft fan, it is discharged from the device body and then introduced into the cement kiln chimney for discharge, or it can be directly discharged through the loop channel.
[0027] The described turning component 3 includes a component rod 18. The component rod 18 is connected to the device body 1, and multiple motors 19 are arranged on the component rod 18. Each motor 19 is connected to a turning impeller 20. With the above structure, when the motor 19 rotates, it drives the turning impeller to rotate. When the turning impeller turns, it turns the substitute combustion fuel on the turning conveyor belt, making the fuel fluffy and improving the drying efficiency.
[0028] A loop valve 5 and an induced draft fan 6 are respectively arranged on each loop channel branch pipe 17. The loop valve 5 on each loop channel branch pipe 17 is located between the device body 1 and the induced draft fan 6 on this loop channel branch pipe 17. With the above structure, the setting of the induced draft fan is used to accelerate the discharge of the flue gas that has undergone heat exchange and drying in the device body, which helps the entry of new flue gas.
[0029] A conveying fan 21 and a conveying valve 22 are arranged on the described conveying pipeline. With the above structure, the control component controls the adjustment of the conveying fan 21 and the conveying valve 22 to achieve the regulation of the flue gas supply volume.
[0030] A humidity sensor and a temperature sensor are arranged inside the described device body 1. The humidity sensor and the temperature sensor are respectively connected to the control component. With the above structure, the humidity sensor is used to detect the humidity inside the device body in real time and feedback the humidity signal to the control component. The temperature sensor is used to detect the temperature inside the device body in real time and feedback the temperature signal to the control component. According to the humidity signal, the control component automatically adjusts the rotation speed of the induced draft fan, the opening degree of each valve, the rotation speed of the spreader, and the rotation speed of the drive motor to control the moisture content of the substitute combustion fuel to meet the requirements.
[0031] The main pipeline 13 is connected to the cold air pipeline 23, and a cold air valve 24 is provided on the cold air pipeline 23. With the above structure, according to the temperature signal, the control component controls the opening, closing and opening degree of the cold air valve of the cold air pipeline, so as to avoid overheating of the air temperature inside the device body, prevent ignition of the substitute combustion fuel and the conveyor belt, and effectively ensure the safety of the drying process of the substitute combustion fuel.
[0032] The conveyor fan 21, the conveyor valve 22, the cold air valve 24, the drive motor 7, the induced draft fan 6, and the distributor 12 are respectively connected to the control component. With the above structure, the control component is the center for controlling the operation of each component of the device, so as to realize the automatic control of the device operation.
[0033] In the device of the present utility model, the cleaning brush 25 is used to clean the surface of the conveyor belt; a water pump is installed on the fire water pipeline 26, and when there is an open fire inside the device body, the open fire can be extinguished in time. The fire water pipeline extends from one end near the feed inlet to the other end near the discharge outlet inside the device body, and a plurality of nozzles are arranged at intervals on the fire water pipeline. When extinguishing the open fire, the valve on the nozzle at the nearest position to the open fire can be controlled by the control component to be opened, so as to realize water spraying and water supply for fire extinguishing nearby. A water pump is installed on the cleaning water pipeline 4 for supplying water during cleaning, and the water sprays out from the nozzle.
[0034] In the combustion fuel pretreatment device of the present utility model, the temperature-bearing flue gas from the cement kiln chimney is fully utilized. The flue gas from the cement kiln chimney enters the device body, and a conveying component is arranged inside the device body for conveying the substitute combustion fuel through the device body. During the process of the substitute combustion fuel passing through the device body, the temperature-bearing flue gas enters the device body to dry the substitute combustion fuel. Because the tail wind discharged from the chimney of the cement kiln still has a remaining temperature of about 100 °C, this waste heat flue gas is generally directly discharged into the atmosphere by the chimney, resulting in waste of heat. The present utility model leads a part of the flue gas from the chimney of the cement kiln to the device body 1 for drying the substitute combustion fuel conveyed through the device body. The flue gas temperature of the chimney of the cement kiln is not high and has no utilization value in other occasions. However, when introduced into the device body of the present utility model, it can effectively realize the drying of the substitute combustion fuel. After drying the substitute combustion fuel, the flue gas is directly discharged or introduced into the cement kiln chimney and then discharged. In this way, the reuse of the heat with no utilization value is realized. The cleaning water pipeline 4 is provided for supplying water to the conveyor belt of the conveying component for cleaning the conveyor belt. A circuit valve 5 and an induced draft fan 6 are arranged on the circuit channel. When a single induced draft fan needs to be overhauled, the circuit valve is closed, that is, the exhaust of this pipeline is disconnected, and at this time, the other pipelines still work normally.
[0035] The present utility model has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above-mentioned manner. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.
Claims
1. A combustion fuel pretreatment device, characterized in that: The device body (1) is connected to the cement kiln chimney (2) through a conveying pipeline, and the device body (1) is connected to the cement kiln chimney (2) through a loop channel. A conveying component is arranged inside the device body (1), and a material turning component (3) is arranged above the conveying component. A clean water pipeline (4) extends into the device body (1), and a plurality of nozzles are arranged on the clean water pipeline (4) at intervals. The clean water pipeline (4) is located near the conveying component. A loop valve (5) and an induced draft fan (6) are arranged on the loop channel, and the loop valve (5) is arranged between the device body (1) and the induced draft fan (6).
2. The combustion fuel pretreatment device according to claim 1, characterized in that: The conveying component comprises a driving motor (7), a driven motor (8), and a conveyor belt (9); a feeding frame (10) is arranged outside the feeding port of the device body (1); the driving motor (7) is mounted on the feeding frame (10); a discharging frame (11) is arranged outside the discharging port of the device body (1); the driven motor (8) is mounted on the discharging frame (11); the conveyor belt (9) is mounted on the driving motor (7) and the driven motor (8); and a distributor (12) is arranged on the feeding frame (10).
3. The combustion fuel pretreatment device according to claim 1 or 2, characterized in that: The delivery pipeline comprises a pipeline main pipe (13), a plurality of pipeline primary branches (14), and a plurality of pipeline secondary branches (15); one end of the pipeline main pipe (13) is connected to the cement kiln chimney (2); the other end of the pipeline main pipe (13) is connected to one end of the plurality of pipeline primary branches (14); and the other end of each pipeline primary branch (14) is connected to the plurality of pipeline secondary branches (15).
4. The combustion fuel pretreatment device according to claim 3, characterized in that: The loop channel comprises a loop channel main pipe (16) and a plurality of loop channel branch pipes (17), one end of each loop channel branch pipe (17) is connected to the device body (1), and the other end of each loop channel branch pipe (17) is connected to the loop channel main pipe (16), and the loop channel main pipe (16) is connected to the cement kiln chimney (2).
5. The combustion fuel pretreatment device according to claim 1 or 2, characterized in that: The material turning component (3) comprises a component rod (18), the component rod (18) is connected to the device body (1), a plurality of motors (19) are arranged on the component rod (18), and each motor (19) is connected to a turning impeller (20).
6. The combustion fuel pretreatment device according to claim 4, characterized in that: A loop valve (5) and an induced draft fan (6) are respectively arranged on each loop channel branch pipe (17), and the loop valve (5) on each loop channel branch pipe (17) is located between the device body (1) and the induced draft fan (6) on the loop channel branch pipe (17).
7. The combustion fuel pretreatment device according to claim 3, characterized in that: A conveying fan (21) and a conveying valve (22) are arranged on the conveying pipeline.
8. The combustion fuel pretreatment device according to claim 7, characterized in that: The pipeline main pipe (13) is connected to the cold air pipeline (23), and a cold air valve (24) is arranged on the cold air pipeline (23).
9. The combustion fuel pretreatment device according to claim 8, characterized in that: A humidity sensor and a temperature sensor are arranged in the device body (1), and the humidity sensor and the temperature sensor are respectively connected to the control component.
10. The combustion fuel pretreatment device according to claim 9, characterized in that: The conveying fan (21), the conveying valve (22), the cold air valve (24), the driving motor (7), the induced draft fan (6), and the distributor (12) are respectively connected to the control components.