A new type of asphalt mixture burner test platform

Abstract

The utility model relates to burner test technical field discloses a novel asphalt mixture burner test platform, including installation base, test platform hearth, mix to move demisting tower, heat exchanger and detection pipeline, is equipped with the burner on the installation base, and the power output end of burner is connected with test platform hearth, and the gas outlet of test platform hearth is connected with the gas inlet of mix to move demisting tower through waste gas pipeline, and waste gas pipeline is connected with the gas inlet of heat exchanger, and the gas outlet of heat exchanger is connected with the gas inlet of detection pipeline, and the gas outlet of detection pipeline is connected with waste gas pipeline. The utility model highly integrates three major function modules of combustion observation, waste gas purification and sample extraction in a platform. Greatly promoted the research and development efficiency, reduced the complexity of test and the technical requirement to operator.

Description

Technical Field

[0001] The present utility model relates to the technical field of burner testing, in particular to a new type of asphalt mixture burner test platform. Background Art

[0002] In the research and development and production quality control of asphalt mixture mixing equipment, the burner, as the core component providing heat source, has a performance that directly determines the drying efficiency of aggregates and the overall energy consumption level of the equipment. Therefore, it is essential to conduct sufficient and reliable test and measurement on the burner.

[0003] However, most of the current performance tests for burners in the industry rely on simple platforms temporarily built on the factory site or directly carried out on production equipment. This traditional test method has many drawbacks: first, the entire setup process is cumbersome and has a long cycle, which seriously affects the efficiency of research and development and testing; second, the lack of dedicated observation and detection interfaces makes it difficult to conveniently and accurately measure the key operating parameters of the burner.

[0004] What is particularly prominent is that traditional test platforms have serious deficiencies in waste gas treatment. On the one hand, such platforms have no waste gas purification function at all, and the high-temperature, highly polluting waste gas generated during the test process can usually only be directly discharged into the atmosphere, or the large-scale tail gas treatment system supporting the entire production line is forced to be started to meet environmental protection requirements. The former causes pollution to the environment and has environmental compliance risks; the latter leads to a great waste of energy, making the test cost extremely high.

[0005] On the other hand, due to the absence of a safe and convenient waste gas sampling system, traditional platforms cannot extract representative waste gas samples under the real working state of the burner. It is difficult for researchers to quantitatively analyze the composition of the waste gas, so that accurate data support cannot be provided for the improvement of key technologies such as air-fuel ratio optimization of the burner and pollutant emission reduction. This has greatly restricted the research and development process of high-performance, low-emission burners.

[0006] In view of this, the present applicant has conducted in-depth research on the above problems, and thus the present case is produced. Contents of the Utility Model

[0007] Aiming at the deficiencies of the prior art, the present utility model provides a new type of asphalt mixture burner test platform, which can effectively solve the above technical problems.

[0008] To achieve the above purpose, the present utility model is implemented through the following technical solutions:

[0009] A novel asphalt mixture burner test platform includes a mounting base, a test platform furnace, a hybrid demisting tower, a heat exchanger, and a testing pipeline. The burner is mounted on the mounting base, and the power output end of the burner is connected to the test platform furnace. The exhaust end of the test platform furnace is connected to the inlet end of the hybrid demisting tower via an exhaust gas pipeline. The exhaust gas pipeline is connected to the inlet end of the heat exchanger, and the exhaust end of the heat exchanger is connected to the inlet end of the testing pipeline. The exhaust end of the testing pipeline is connected to the exhaust gas pipeline.

[0010] Furthermore, the heat exchanger includes an outer shell, inside which a coil is provided. The two ends of the coil are connected to the air inlet and air outlet of the outer shell, respectively. The outer shell is also provided with a first water pump, a circulating water inlet, and a circulating water outlet. An external water tank is provided on the side of the heat exchanger. The first water pump draws circulating water from the external water tank into the interior of the outer shell through the circulating water inlet.

[0011] Furthermore, the heat exchanger is equipped with an inlet valve at the air inlet end, the heat exchanger is connected to the first induced draft fan at the air outlet end, the first induced draft fan is equipped with an outlet valve at the air outlet end, and the detection pipe is connected to the outlet valve at the air inlet end.

[0012] Furthermore, the detection pipeline is provided with a detection port.

[0013] Furthermore, the hybrid demisting tower includes a tower frame, a spraying mechanism, and a second water pump. The lower end of the tower frame is equipped with a water tank, and the upper end of the tower frame is equipped with a demisting chamber. The side wall of the water tank is equipped with an air inlet, and the upper end of the demisting chamber is equipped with an air outlet. A connecting pipe is provided between the water tank and the demisting chamber, and a swirl plate is provided inside the connecting pipe. The second water pump is installed on the side wall of the water tank, and the spraying mechanism is located inside the demisting chamber. The second water pump is connected to the spraying mechanism.

[0014] Furthermore, the demisting chamber includes a centrifugal demisting layer, a filter layer, and a spray layer that are separated into upper and lower sections. The spray layer is equipped with a support rod. The spraying mechanism includes a water inlet pipe, a water distribution pipe, and a nozzle. The water distribution pipe is fixedly connected to the support rod. One end of the water inlet pipe is connected to the first water pump, and the other end of the water inlet pipe is connected to the water distribution pipe. The nozzle is connected to the water distribution pipe.

[0015] Furthermore, the filter layer is provided with a support frame, the support frame is provided with a sliding groove, and the sliding groove is provided with a filter media assembly.

[0016] Furthermore, the filter media assembly uses ceramic Pall ring filter media material.

[0017] Furthermore, a centrifugal demister is installed inside the centrifugal demister layer.

[0018] Furthermore, the furnace of the test platform is equipped with an observation port.

[0019] This invention provides a novel asphalt mixture burner testing platform. It has the following beneficial effects:

[0020] 1. This utility model utilizes a hybrid demister tower to perform four-stage deep purification of exhaust gas: cyclone centrifugation, spray neutralization, filtration and adsorption, and centrifugal demisting. Ultimately, it traps the vast majority of pollutants, releasing dry and clean gas. This eliminates the need for large-scale external environmental protection equipment during burner testing, enabling environmental compliance to be achieved within a standard laboratory and completely eliminating pollution risks during the testing process.

[0021] 2. The heat exchanger in this invention uses a circulating water system to safely reduce a small amount of high-temperature waste gas used for sampling to room temperature or an operable temperature, avoiding the risk of burns. Furthermore, the sampling process is conducted without removing any substances from the waste gas, ensuring that the sample composition matches the actual waste gas composition at the furnace outlet, thus enabling accurate pollutant analysis.

[0022] 3. This utility model highly integrates three major functional modules—combustion observation, exhaust gas purification, and sample extraction—into a single platform. Researchers no longer need to set up and coordinate different devices in various locations; they can complete the entire experimental process from performance testing to environmental verification on this platform, greatly improving R&D efficiency and reducing the complexity of experiments and the technical requirements for operators.

[0023] 4. The multi-stage treatment mechanism of the hybrid demisting tower in this utility model has high and stable purification efficiency for pollutants of different particle sizes and states, ensuring the reliability of emission results. Attached Figure Description

[0024] Figure 1 This is a perspective view of the external structure of this utility model;

[0025] Figure 2 This is a schematic diagram of a heat exchanger.

[0026] Figure 3 This is a 3D view of the external structure of the hybrid demisting tower;

[0027] Figure 4 This is a three-dimensional view of another external structure of the hybrid demisting tower;

[0028] Figure 5 This is a three-dimensional cross-sectional view of the hybrid demisting tower.

[0029] Figure 6 This is a front view of the cross-sectional structure of the hybrid demisting tower;

[0030] Figure 7 for Figure 5 A magnified view of a portion of region A in the middle.

[0031] The components include: mounting base 1, burner 11, test platform furnace 2, hybrid demister 3, tower 31, water tank 311, demister chamber 312, centrifugal demister layer 3121, filter layer 3122, spray layer 3123, air inlet 313, air outlet 314, spray mechanism 32, water inlet pipe 321, water distribution pipe 322, nozzle 323, second water pump 33, connecting pipe 34, swirl plate 341, support rod 35, support frame 36, slide 361, filter media assembly 362, cover plate 37, centrifugal demister 38, heat exchanger 4, outer shell 41, coil 42, first water pump 43, circulating water inlet 44, circulating water outlet 45, external water tank 46, inlet valve 47, first induced draft fan 48, outlet valve 49, detection pipe 5, and exhaust gas pipe 6. Detailed Implementation

[0032] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] Please see the appendix Figure 1 -Appendix Figure 7 This utility model provides a novel asphalt mixture burner test platform, including a mounting base 1, a test platform furnace 2, a hybrid demister 3, a heat exchanger 4, and a detection pipe 5. A burner 11 is mounted on the mounting base 1, and the power output end of the burner 11 is connected to the test platform furnace 2. An observation port is provided on the test platform furnace 2. The flame combustion pattern can be observed through the observation port, and the flame size can be adjusted based on the temperature feedback from the thermocouple at the furnace exhaust port. The exhaust end of the test platform furnace 2 is connected to the inlet end of the hybrid demister 3 via an exhaust gas pipe 6. The exhaust gas pipe 6 is connected to the inlet end of the heat exchanger 4, and the exhaust end of the heat exchanger 4 is connected to the inlet end of the detection pipe 5. The exhaust end of the detection pipe 5 is connected to the exhaust gas pipe 6. The detection pipe 5 is existing technology and has a detection port for collecting and testing the waste gas used in the experiment.

[0034] In this embodiment, the heat exchanger 4 includes a housing 41, inside which a coil 42 is installed. The two ends of the coil 42 are connected to the air inlet and air outlet of the housing 41, respectively. The housing 41 also includes a first water pump 43, a circulating water inlet 44, and a circulating water outlet 45. An external water tank 46 is located on the side of the heat exchanger 4. The first water pump 43 draws circulating water from the external water tank 46 into the housing 41 through the circulating water inlet 44. The air inlet of the heat exchanger 4 is equipped with an inlet valve 47, and the air outlet of the heat exchanger 4 is connected to a first induced draft fan 48. The air outlet of the first induced draft fan 48 is equipped with an outlet valve 49, and the air inlet of the detection pipe 5 is connected to the outlet valve 49. When waste gas sampling is required for testing, the outlet valve 49 at the test pipe is opened, and the heat exchanger 4 is started. Part of the exhaust gas in exhaust pipe 6 flows into heat exchanger 4. Heat exchanger 4 reduces the temperature of this small amount of high-temperature exhaust gas to a collectable temperature. Without removing any substances from the exhaust gas, it is collected through the detection port on detection pipe 5 and used as a test sample. Furthermore, the internal coil 42 design of heat exchanger 4 increases the contact area between the exhaust gas and the internal circulating water, reducing the gas temperature at the detection end and facilitating sampling and testing.

[0035] In this embodiment, the hybrid demisting tower 3 includes a tower 31, a spraying mechanism 32, and a second water pump 33. A water tank 311 is located at the lower end of the tower 31, and a demisting chamber 312 is located at the upper end of the tower 31. An air inlet 313 is located on the side wall of the water tank 311, and an air outlet 314 is located at the upper end of the demisting chamber 312. The air outlet 314 is connected to a second induced draft fan, which discharges the purified exhaust gas from the demisting chamber 312. A connecting pipe 34 is provided between the water tank 311 and the demisting chamber 312. A rotatable swirl plate 341 is located inside the connecting pipe 34. The second water pump 33 is installed on the outer wall of the water tank 311. The spraying mechanism 32 is located inside the demisting chamber 312, and the second water pump 33 is connected to the spraying mechanism 32, supplying water from the water tank 311 to the spraying mechanism 32. After the exhaust gas enters the bottom of the tower 31 through the air inlet 313, it rises through the connecting pipe 34 and forms a high-speed rotating airflow through the internal swirl plate 341, generating a strong centrifugal force. The centrifugal force throws particulate matter, oil droplets, or liquid-soluble pollutants in the exhaust gas toward the wall of the connecting pipe 34, and some of them are collected after directly impacting the wall of the connecting pipe 34 or the inner wall of the tower 31.

[0036] In this embodiment, the demisting chamber 312 includes a centrifugal demisting layer 3121, a filter layer 3122, and a spray layer 3123, which are separated into upper and lower sections. This top-down hierarchical design ensures that each stage can efficiently complete its core purification task, resulting in a clear process, high purification efficiency, and avoiding mutual interference between different processes. A support rod 35 is provided inside the spray layer 3123. The spray mechanism 32 includes a water inlet pipe 321, a water distribution pipe 322, and spray nozzles 323. The water distribution pipe 322 is fixedly connected to the support rod 35. One end of the water inlet pipe 321 is connected to the second water pump 33, and the other end of the water inlet pipe 321 is connected to the water distribution pipe 322. The spray nozzles 323 are connected to the water distribution pipe 322. Furthermore, there are four connecting pipes 34, with each spray nozzle 323 correspondingly positioned above the connecting pipe 34. With the above structure, while the exhaust gas undergoes centrifugal separation through the connecting pipe 34, the spraying mechanism 32 sprays a spray liquid containing alkaline agents downwards through the nozzle 323. This forms a dense water curtain on the cross-section of the spray layer 3123, ensuring that the exhaust gas rising from the lower connecting pipe 34 can fully contact and react with the alkaline droplets. By positioning the nozzle 323 directly above the connecting pipe 34, the exhaust gas, after swirl pretreatment, can be sprayed and neutralized immediately, improving reaction efficiency and purification effect.

[0037] In this embodiment, a support frame 36 is provided on the filter layer 3122, and a sliding groove 361 extending along the front-rear direction of the tower 31 is provided on the support frame 36. A filter media assembly 362 is slidably connected on the sliding groove 361. The rear side wall of the demisting chamber 312 has an opening, and the side wall of the opening has a cover plate 37 that is rotatably connected. Furthermore, the outer shell of the filter media assembly 362 is provided with a handle, so that during use, the cover plate 37 can be opened to pull out the filter media assembly 362 on the support frame 36 for replacement, making maintenance more convenient. At the same time, it also provides great convenience for the inspection and maintenance of internal components such as the nozzle 323 and the swirl plate 341. More specifically, the filter components in the filter media assembly 362 are made of ceramic Pall ring filter media. Ceramic Pall rings have the advantages of large specific surface area, high porosity, corrosion resistance, and low pressure drop. As a filter media, it can efficiently adsorb residual fine pollutants and droplets in the exhaust gas, while providing sufficient contact area for the gas and liquid phases, further promoting chemical reactions and physical interception.

[0038] In this embodiment, a centrifugal demister 38 is installed within the centrifugal demister layer 3121. The centrifugal demister 38 utilizes existing centrifugal demister equipment. It forces the gas carrying water mist to rotate at high speed, using centrifugal force to throw water droplets, which are much denser than gases, towards the wall. The water droplets condense and collect upon impact with the wall, eventually dripping downwards, thus achieving complete separation of water and gas. The gas treated by this process has extremely low water content, thus achieving gas drying.

[0039] The working principle of this utility model is as follows: After the burner 11 is installed and started, the flame posture can be observed through the furnace observation port. A thermocouple is installed at the flue gas outlet of the furnace to detect the flame temperature inside the furnace. The exhaust gas first enters the exhaust gas pipe 6. The exhaust gas pipe 6 has a detection branch, which is a detection pipe 5 for detecting various indicators of the emitted exhaust gas. When sampling is required, the pipe valve is opened, and the pipe passes through a heat exchanger 4 to reduce a small amount of high-temperature exhaust gas to a collectable temperature. Without removing any substances from the exhaust gas, the exhaust gas is collected through the detection port of the detection pipe 5 as a test sample. The remaining majority of the exhaust gas passes through the hybrid demister 3, where the generated exhaust gas undergoes four stages of treatment: cyclone, spray, filtration, and centrifugal demisting, before being discharged through the second induced draft fan at the end to meet emission standards.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel asphalt mixture burner test platform, characterized in that, It includes a mounting base, a test platform furnace, a hybrid demisting tower, a heat exchanger, and testing pipes. The mounting base is equipped with a burner, the power output end of which is connected to the test platform furnace. The exhaust end of the test platform furnace is connected to the inlet end of the hybrid demisting tower via an exhaust pipe. The exhaust pipe is connected to the inlet end of the heat exchanger. The exhaust end of the heat exchanger is connected to the inlet end of the testing pipes. The exhaust end of the testing pipes is connected to the exhaust pipes.

2. The novel asphalt mixture burner test platform according to claim 1, characterized in that, The heat exchanger includes an outer shell, inside which a coil is provided. The two ends of the coil are connected to the air inlet and air outlet of the outer shell, respectively. The outer shell is also provided with a first water pump, a circulating water inlet, and a circulating water outlet. An external water tank is provided on the side of the heat exchanger. The first water pump draws circulating water from the external water tank into the interior of the outer shell through the circulating water inlet.

3. The novel asphalt mixture burner test platform according to claim 2, characterized in that, The heat exchanger has an inlet valve at its inlet end and an outlet valve at its outlet end. The inlet valve of the first induced draft fan is connected to the outlet valve of the first induced draft fan. The inlet valve of the detection pipe is connected to the outlet valve.

4. The novel asphalt mixture burner test platform according to claim 1, characterized in that, The detection pipeline is equipped with a detection port.

5. The novel asphalt mixture burner test platform according to claim 1, characterized in that, The hybrid demisting tower includes a tower frame, a spraying mechanism, and a second water pump. The lower end of the tower frame is equipped with a water tank, and the upper end of the tower frame is equipped with a demisting chamber. The side wall of the water tank is equipped with an air inlet, and the upper end of the demisting chamber is equipped with an air outlet. A connecting pipe is provided between the water tank and the demisting chamber, and a swirl plate is provided inside the connecting pipe. The second water pump is installed on the side wall of the water tank, and the spraying mechanism is located inside the demisting chamber. The second water pump is connected to the spraying mechanism.

6. The novel asphalt mixture burner test platform according to claim 5, characterized in that, The demisting chamber includes a centrifugal demisting layer, a filter layer, and a spray layer that are separated into upper and lower sections. A support rod is provided inside the spray layer. The spraying mechanism includes an inlet pipe, a distribution pipe, and a nozzle. The distribution pipe is fixedly connected to the support rod. One end of the inlet pipe is connected to the first water pump, and the other end of the inlet pipe is connected to the distribution pipe. The nozzle is connected to the distribution pipe.

7. The novel asphalt mixture burner test platform according to claim 6, characterized in that, The filter layer is provided with a support frame, the support frame is provided with a sliding groove, and the sliding groove is provided with a filter media assembly.

8. The novel asphalt mixture burner test platform according to claim 7, characterized in that, The filter media assembly uses ceramic Pall ring filter media material.

9. A novel asphalt mixture burner test platform according to claim 7, characterized in that, A centrifugal demister is installed inside the centrifugal demister layer.

10. A novel asphalt mixture burner test platform according to claim 1, characterized in that, The experimental platform has an observation port on its furnace.

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