Asphalt smoke combustion power generation device

Abstract

The utility model discloses an asphalt smoke combustion power generation device, and relates to the technical field of heat recovery. The settling chamber comprises two chambers, a guide plate is arranged between the two chambers, one of the two chambers is an inlet chamber, the other chamber is an outlet chamber, and the inlet chamber is connected to the gas collecting hood; the asphalt smoke storage tank is connected with the outlet cavity; a natural gas storage tank; the catalytic combustion chamber is connected to the asphalt smoke storage tank and the natural gas storage tank; and the thermoelectric conversion device is connected to the catalytic combustion chamber. The utility model provides an asphalt smoke combustion power generation device which can recycle asphalt energy.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery, and particularly relates to an asphalt fume combustion power generation device. Background Art

[0002] With the development of economy and society, highway traffic infrastructure gradually extends to remote mountainous areas. Due to the good performance of asphalt, asphalt pavement accounts for a very large proportion in graded highways. As is well known, asphalt mixture is a heat-absorbing material. In most areas of our country, the highest temperature in summer is 35 - 40 °C or above, while the highest temperature of asphalt pavement is 25 - 30 °C higher than the highest temperature of the air, and may reach 60 - 70 °C. Therefore, under the continuous heat radiation of the sun, a large amount of heat is absorbed by the asphalt pavement and accumulated in the asphalt surface layer, which makes the pavement temperature much higher than the air temperature. In remote areas, power facilities are not perfect, and the power configuration of highway facility lighting and indicating devices is not in place. The energy density of asphalt pavement is relatively high, and it has great potential for recycling. Content of the Utility Model

[0003] Technical Problems to be Solved by the Utility Model

[0004] Aiming at the technical problems that the existing asphalt has a high energy density and is difficult to recycle, resulting in energy waste, the utility model provides an asphalt fume combustion power generation device, which can recycle asphalt energy.

[0005] Technical Solution

[0006] To solve the above problems, the technical solution provided by the utility model is as follows:

[0007] An asphalt fume combustion power generation device, comprising a gas collecting hood; a sedimentation chamber, which includes two chambers, a flow guiding plate is provided between the two chambers, one of the two chambers is an inlet chamber, and the other chamber is an outlet chamber, and the inlet chamber is connected to the gas collecting hood; an asphalt fume storage tank, which is connected to the outlet chamber; a natural gas storage tank; a catalytic combustion chamber, which is connected to the asphalt fume storage tank and the natural gas storage tank; a thermoelectric conversion device, which is connected to the catalytic combustion chamber.

[0008] Gas Collecting Hood:

[0009] The gas collecting hood is located above the asphalt production equipment, and is used for capturing asphalt fumes to ensure that most of the fumes are collected and guided to subsequent treatment processes.

[0010] Sedimentation Chamber:

[0011] The sedimentation chamber is composed of two chambers, separated by a flow guiding plate in the middle, one of the chambers serves as the fume inlet, and the other serves as the outlet.

[0012] The function of the deflector is to change the flow direction of the flue gas, so that the larger particulate matters in the flue gas settle down due to gravity, avoiding clogging or damage to the subsequent system.

[0013] Pitch fume storage tank:

[0014] The pitch fume that has undergone preliminary sedimentation treatment is guided to the pitch fume storage tank, where the fume can be temporarily stored and await further treatment.

[0015] Natural gas storage tank:

[0016] The natural gas storage tank is used to store auxiliary fuel, such as natural gas, which will be mixed with pitch fume in the catalytic combustion chamber to promote the combustion process.

[0017] Catalytic combustion chamber:

[0018] The catalytic combustion chamber is the core part of the whole system, which connects the pitch fume storage tank and the natural gas storage tank.

[0019] In the catalytic combustion chamber, the pitch fume and natural gas undergo an efficient combustion reaction under the action of a catalyst, releasing a large amount of heat energy.

[0020] The catalyst can significantly reduce the temperature required for the combustion reaction, improve the combustion efficiency, and reduce harmful emissions at the same time.

[0021] Thermoelectric conversion device:

[0022] The thermoelectric conversion device is directly connected to the catalytic combustion chamber, and its purpose is to convert the heat energy generated during the combustion process into electrical energy.

[0023] Optionally, an axial flow fan is provided between the gas collecting hood and the sedimentation chamber.

[0024] Enhance air flow power: The axial flow fan can increase the power of the air flow, helping the pitch fume to be more effectively transported from the gas collecting hood to the sedimentation chamber. This is achieved by generating a strong air flow thrust, ensuring the continuous and stable flow of the flue gas.

[0025] Control air flow speed: The axial flow fan can adjust the air flow speed, which is crucial for ensuring the effective sedimentation of particulate matters inside the sedimentation chamber. An appropriate air flow speed can balance the sedimentation time of particulate matters and the time for the air flow to pass through the sedimentation chamber, thereby improving the sedimentation efficiency.

[0026] Maintain system pressure: The axial flow fan between the gas collecting hood and the sedimentation chamber can also help maintain the appropriate pressure of the whole system. By controlling the rotational speed of the fan, the positive or negative pressure state inside the system can be adjusted, ensuring that the flue gas does not leak into the environment, and at the same time preventing the disordered entry of external air, which affects the flue gas treatment effect.

[0027] Improving System Efficiency: The use of axial fans improves the operating efficiency of the entire asphalt fume treatment system. By optimizing the air flow, the residence time of the fumes in the system can be reduced, accelerating the treatment speed and also facilitating the smooth progress of subsequent combustion and power generation processes.

[0028] Optionally, a gas booster pump is provided between the settling chamber and the asphalt fume storage tank.

[0029] Overcoming Resistance: In the fume treatment system, from the gas collection hood to the settling chamber and then to the asphalt fume storage tank, the fumes pass through multiple components, including pipes, valves, filters, etc., which all generate a certain amount of resistance. The gas booster pump ensures smooth fume flow even in the face of high resistance by increasing the pressure of the fumes.

[0030] Maintaining Flow Rate: The gas booster pump can maintain the flow rate of the fumes, which is crucial for ensuring system efficiency and treatment effectiveness. By adjusting the output pressure of the booster pump, the amount of fumes entering the asphalt fume storage tank can be controlled, ensuring the stability and controllability of subsequent treatment processes (such as combustion).

[0031] Optionally, a spherical cavity is provided inside the catalytic combustion chamber.

[0032] Increasing Contact Area: The spherical cavity can increase the internal surface area of the catalytic combustion chamber, which means more catalyst can be placed in a limited space, thus increasing the contact area between the catalyst and the asphalt fumes. This is beneficial for improving the catalytic efficiency, enabling the combustible components in the fumes to burn fully at lower temperatures.

[0033] Improving Turbulence: The spherical cavity can promote the turbulence of the air flow, making the contact between the fumes and the catalyst more uniform. Turbulence helps break the laminar boundary layer in the air flow, improving the mass transfer efficiency, and ensuring that volatile organic compounds (VOCs) and other combustible components in the fumes can come into full contact with the catalyst and react quickly.

[0034] Uniform Heat Distribution: The spherical structure helps with uniform heat distribution, reducing the formation of hot spots and avoiding catalyst deactivation or damage caused by local overheating. A uniform temperature distribution is beneficial for maintaining the optimal conditions for catalytic reactions and improving energy recovery efficiency.

[0035] Prolonging Residence Time: By designing spherical cavities with specific sizes and layouts, the residence time of the fumes in the catalytic combustion chamber can be cleverly extended, ensuring that all combustible components have sufficient time for catalytic oxidation to achieve complete combustion.

[0036] Structural Strength and Durability: The spherical structure has good structural strength in engineering, capable of withstanding the high temperatures and pressures generated during catalytic combustion, extending the service life of the catalytic combustion chamber.

[0037] Optionally, the outer shell of the catalytic combustion chamber is provided with round holes.

[0038] The round holes with a larger outer diameter and a smaller inner diameter on the outer shell of the combustion chamber are helpful for air intake, and can cool the outer shell of the internal circular concave chamber combustion chamber to prevent overheating.

[0039] Optionally, a gas mixing pump is provided between the catalytic combustion chamber, the asphalt fume storage tank and the natural gas storage tank, and the gas mixing pump intakes air, asphalt fumes and natural gas.

[0040] Precise proportion mixing: The gas mixing pump can mix air, asphalt fumes and natural gas together in a predetermined proportion. Air provides the oxygen required for combustion. Asphalt fumes contain combustible organic compounds, and natural gas, as an auxiliary fuel, can provide additional calorific value when the concentration of asphalt fumes is insufficient. Precise proportion control is crucial for ensuring complete combustion and avoiding the generation of incomplete combustion products (such as CO).

[0041] Uniform mixing: The mixing pump ensures that the three gases are fully and evenly mixed together through dynamic stirring or physical mixing. Uniform mixing can improve combustion efficiency, reduce unburned residues, and is also conducive to the full utilization of the catalyst.

[0042] Pressure regulation: While mixing the gases, the mixing pump also plays a role in regulating the gas delivery pressure. Ensuring that the mixed gas enters the catalytic combustion chamber at the correct pressure can optimize the combustion conditions and improve the energy conversion efficiency.

[0043] Safety guarantee: By controlling the mixing ratio and the mixing process, the gas mixing pump helps prevent explosions or other safety accidents. Excessive oxygen or fuel may cause dangerous explosion reactions in the combustion chamber, while precise mixing ratios can avoid this situation.

[0044] System coordination: The gas mixing pump, as a coordination point, connects the asphalt fume storage tank, the natural gas storage tank and the catalytic combustion chamber, ensuring smooth transition and efficient cooperation between various parts of the entire combustion power generation system.

[0045] Optionally, the outlet of the asphalt fumes in the gas mixing pump is of a Venturi tube structure.

[0046] The Venturi tube structure can achieve better mixing effects.

[0047] Optionally, the outlet of the gas mixing pump is of a Venturi tube structure.

[0048] The Venturi tube structure can achieve better mixing effects.

[0049] Optionally, through holes are provided in the lower part of the deflector.

[0050] Airflow guidance: One of the main functions of the deflector is to change the direction of the airflow, forcing the airflow to move in a curved path in the settling chamber. When the flue gas containing particulate matter enters the settling chamber, it encounters the deflector and changes its flow direction, which helps the particulate matter to separate from the airflow due to inertia and settle downward.

[0051] Particulate separation: The arrangement of through-holes allows the purified gas to pass through, while larger particulate matter, due to the action of gravity and inertia when the airflow changes direction, cannot follow the airflow through these through-holes with smaller apertures and instead continues to settle downward. In this way, most of the particulate matter accumulates at the bottom of the settling chamber, while the relatively clean gas can continue to flow forward through the through-holes.

[0052] Improve sedimentation efficiency: By controlling the position and size of the through-holes, the velocity and direction of the airflow can be adjusted, thereby optimizing the airflow distribution in the settling chamber and improving the sedimentation efficiency of particulate matter. If the aperture is properly designed, it can ensure that most of the particulate matter has settled to the bottom before reaching the through-holes, thus reducing the risk of particulate matter escaping with the gas.

[0053] Reduce energy consumption: Compared with other types of particulate separation technologies, such as cyclone separators or electrostatic precipitators, the settling chamber with a deflector and through-hole design generally has lower energy consumption because it mainly relies on the natural flow of gravity and airflow rather than additional mechanical forces.

[0054] Beneficial effects

[0055] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0056] The technical solution provided by the present utility model is provided with a gas collecting hood, a settling chamber, an asphalt fume storage tank, a natural gas storage tank, a catalytic combustion chamber and a thermoelectric conversion device. The asphalt fume is not only effectively treated, reducing environmental pollution, but also the energy is recycled, improving the overall energy efficiency and economic benefits. This design embodies the concept of circular economy and sustainable development. Brief description of the drawings

[0057] Figure 1 It is a schematic structural diagram of an asphalt fume combustion power generation device proposed in an embodiment of the present utility model;

[0058] Figure 2 It is a schematic structural diagram of the catalytic combustion chamber of an asphalt fume combustion power generation device proposed in an embodiment of the present utility model;

[0059] Figure 3 It is a schematic structural diagram of a gas mixing pump of an asphalt fume combustion power generation device proposed in an embodiment of the present utility model;

[0060] 1. Gas collection hood; 2. Axial flow fan; 3. Settling chamber; 4. Flue gas inlet; 5. Flue gas outlet; 6. Deflector; 7. Gas booster pump; 8. Asphalt fume storage tank; 9. Natural gas storage tank; 10. Catalytic combustion chamber; 11. Thermoelectric conversion device; 12. Round hole; 13. Spherical cavity; 14. Gas mixing pump; 15. Air interface; 16. Asphalt fume interface; 17. Natural gas interface; 18. Venturi tube structure. Detailed implementation mode

[0061] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the accompanying drawings and embodiments.

[0062] Embodiment 1

[0063] Combined with the attached Figure 1 , an asphalt fume combustion power generation device includes a gas collection hood 1, which is located above the asphalt road and is used to capture asphalt fumes to ensure that most of the fumes are collected and guided to the subsequent treatment process. Generally, an external gas collection hood 1 is used, and the shape and size of the hood opening are designed according to the characteristics of the asphalt fumes, and can be designed into a circular, rectangular, elliptical or other shapes to adapt to different pollution sources. The gas collection hood 1 includes a deflector 6, a baffle or a flow guiding cover, which is used to guide the airflow and promote the pollutants to move towards the hood opening. These structures can help control the direction and speed of the airflow to reduce the possibility of pollutant escape. The gas collection hood 1 is connected to the settling chamber 3 through a pipeline. The pipeline design should minimize the elbows to reduce the airflow resistance and ensure that the pollutants flow smoothly to the treatment system.

[0064] The settling chamber 3 includes two chambers, and a deflector 6 is provided between the two chambers. One of the two chambers is an inlet chamber, and the other chamber is an outlet chamber. The inlet chamber is connected to the gas collection hood 1. The settling chamber 3 is composed of two chambers, separated by a deflector 6 in the middle. One of the chambers serves as the flue gas inlet 4, and the other serves as the outlet. The function of the deflector 6 is to change the flow direction of the flue gas, so that the larger particles in the flue gas settle due to gravity and avoid entering the subsequent system to cause blockage or damage.

[0065] An axial flow fan 2 is provided between the gas collection hood 1 and the settling chamber 3.

[0066] The asphalt fume storage tank 8 is connected to the outlet chamber. The asphalt fumes that have undergone preliminary settling treatment are guided to the asphalt fume storage tank 8, where the fumes can be temporarily stored and waiting for further treatment. A gas booster pump 7 is provided between the settling chamber 3 and the asphalt fume storage tank 8.

[0067] The natural gas storage tank 9 is used to store auxiliary fuel, such as natural gas, which will be mixed with the asphalt fumes in the catalytic combustion chamber 10 to promote the combustion process.

[0068] The catalytic combustion chamber 10 is connected to the pitch fume storage tank 8 and the natural gas storage tank 9. The catalytic combustion chamber 10 is the core part of the entire system, and it connects the pitch fume storage tank 8 and the natural gas storage tank 9. Inside the catalytic combustion chamber 10, the pitch fume and natural gas undergo an efficient combustion reaction under the action of a catalyst, releasing a large amount of heat energy. The catalyst can significantly reduce the temperature required for the combustion reaction, improve the combustion efficiency, and reduce harmful emissions at the same time.

[0069] The thermoelectric conversion device 11 is connected to the catalytic combustion chamber 10. The thermoelectric conversion device 11 is directly connected to the catalytic combustion chamber 10, and its purpose is to convert the heat energy generated during the combustion process into electrical energy. Generally, steam is generated through a heat exchanger, the steam drives the turbine to rotate, and the generator connected to the turbine converts mechanical energy into electrical energy.

[0070] A through hole is provided at the lower part of the deflector 6 for the passage of flue gas.

[0071] Combined with the attached Figure 2 , a gas mixing pump 14 is provided between the catalytic combustion chamber 10, the pitch fume storage tank 8 and the natural gas storage tank 9. The gas mixing pump 14 introduces air, pitch fume and natural gas. The outlet of the pitch fume in the gas mixing pump 14 is a Venturi tube structure 18 for the primary mixing of gases. The outlet of the gas mixing pump 14 is also a Venturi tube structure 18 for the secondary mixing of gases.

[0072] The gas mixing pump 14 is provided with an air interface 15, a pitch fume interface 16 and a natural gas interface 17, and the three are in a tee structure.

[0073] Combined with the attached Figure 3 , the gas after secondary mixing enters the combustion chamber and is ignited. A spherical concave cavity 13 is provided inside the catalytic combustion chamber 10. The spherical concave cavity 13 can cause the fluid flow / thermal boundary layer to be in an alternating state of destruction and reconstruction all the time, strengthening the fluid disturbance effect / heat transfer effect, and the temperature at the outlet is higher than that of the straight-through channel.

[0074] The outer shell of the catalytic combustion chamber 10 is provided with a plurality of uniformly arranged round holes 12, which helps air to enter, cools the outer shell of the internal circular concave cavity combustion chamber to a certain extent, and prevents overheating.

[0075] The pitch fume is heated and desorbed after reaching a certain concentration through the adsorption device. The high-concentration pitch fume enters the gas mixing pump 14 through the heat exchanger and is mixed with air: combustion promoter (natural gas), and finally burns catalytically in the combustion chamber to remove harmful substances.

[0076] Working principle:

[0077] The asphalt fume enters the sedimentation chamber 3, and large particulate dust in the asphalt fume is removed through the filtering membrane and gravity; the asphalt fume after filtration and sedimentation enters the preheating chamber for temporary storage, and the preheating chamber is heated by electricity; after the asphalt fume is stored to a certain concentration, it enters the combustion chamber to be mixed with natural gas for catalytic combustion; the thermal energy after catalytic combustion and the thermal energy discharged from the tail gas pipe of the paver are connected to a thermoelectric conversion device for thermoelectric conversion; the electric energy generated by the power generation device is supplemented into the paver battery or an independent battery to supply power to various devices and functions on the vehicle.

[0078] Embodiment 2

[0079] The difference between this Embodiment 2 and Embodiment 1 lies in that:

[0080] The outlet of the asphalt fume in the gas mixing pump 14 or the outlet of the gas mixing pump 14 is a Venturi tube structure 18.

[0081] The above has schematically described the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design, without creative work, structural manners and embodiments similar to the technical solution without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A asphalt smoke combustion power generation device, characterized in that: include Gas hood; The settling chamber comprises two chambers, a guide plate is arranged between the two chambers, one of the two chambers is an inlet chamber, and the other chamber is an outlet chamber, and the inlet chamber is connected to the gas collecting hood; an asphalt fume storage tank connected to the outlet chamber; Natural gas storage tanks; A catalytic combustion chamber connected to the asphalt fume storage tank and the natural gas storage tank; The thermoelectric conversion device is connected to the catalytic combustion chamber.

2. The asphalt smoke combustion power generation device according to claim 1, characterized in that: An axial flow fan is arranged between the air collecting hood and the settling chamber.

3. The asphalt smoke combustion power generation device according to claim 1, characterized in that: A gas booster pump is provided between the sedimentation chamber and the asphalt fume storage tank.

4. The asphalt smoke combustion power generation device according to claim 1, characterized in that: A spherical cavity is arranged inside the catalytic combustion chamber.

5. The asphalt smoke combustion power generation device according to claim 4, characterized in that: The shell of the catalytic combustion chamber is provided with a circular hole.

6. The asphalt smoke combustion power generation device according to claim 1, characterized in that: A gas mixing pump is provided between the catalytic combustion chamber, the asphalt fume storage tank and the natural gas storage tank, and the gas mixing pump introduces air, asphalt fume and natural gas.

7. The asphalt smoke combustion power generation device according to claim 6, characterized in that: The outlet of the asphalt smoke in the gas mixing pump is a venturi tube structure.

8. The asphalt smoke combustion power generation device according to claim 6 or 7, characterized in that: The outlet of the gas mixing pump is a venturi tube structure.

9. The asphalt smoke combustion power generation device according to claim 1, characterized in that: A through hole is provided at the lower part of the guide plate.

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