An asphalt fume generation and enrichment device

Abstract

The utility model relates to the technical field of asphalt research, specifically relates to a kind of asphalt smoke generation and enrichment device, including generating device, enrichment device and cleaning device, the upper inlet of generating device is communicated with air supply fan, the upper outlet of generating device is communicated with flue gas pipeline, the outlet end of flue gas pipeline is communicated with the upper inlet of enrichment device, the upper outlet of enrichment device is communicated with gas collection tank, the first outlet of gas collection tank is communicated with negative pressure pump, cleaning device includes evaporator and evaporation cleaning agent pipeline, the inlet of evaporator is communicated with the second outlet of gas collection tank, the inlet end of evaporation cleaning agent pipeline is communicated with the outlet of evaporator, the outlet end of evaporation cleaning agent pipeline is communicated with flue gas pipeline inlet end;After each experiment, without removing experimental device, the cleaning of device can be completed in closed environment, improve experimental efficiency, avoid the damage of frequent disassembly and cleaning to device air tightness.

Description

Technical Field

[0001] This utility model relates to the field of asphalt research technology, specifically to an asphalt smoke generation and enrichment device. Background Technology

[0002] During high-temperature construction, asphalt fumes inevitably release large amounts of asphalt smoke, causing environmental pollution and threatening the health of surrounding workers. Therefore, research on asphalt fumes is receiving increasing attention. Currently, researchers have developed various asphalt smoke generation and enrichment devices to explore the laws governing asphalt smoke production.

[0003] In existing asphalt fume generation and enrichment devices, some asphalt fumes that leave the high-temperature environment of the generation device tend to adhere to the pipes during the experiment, contaminating the pipe walls. Therefore, after the fume generation experiment of each asphalt sample is completed, the experimental device needs to be dismantled, cleaned, and reinstalled for the next sample experiment. The process is cumbersome, and the frequent dismantling and reinstallation can easily damage the airtightness of the device.

[0004] Therefore, there is an urgent need for an asphalt fume generation and enrichment device that can avoid frequent disassembly and cleaning, and improve experimental efficiency and safety. Utility Model Content

[0005] To address the aforementioned problems, this invention provides an asphalt fume generation and enrichment device to solve the problems of the prior art.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] An asphalt fume generation and enrichment device includes a generation device, an enrichment device, and a cleaning device. The upper inlet of the generation device is connected to a blower, and the upper outlet of the generation device is connected to a flue gas duct. The outlet end of the flue gas duct is connected to the upper inlet of the enrichment device. The upper outlet of the enrichment device is connected to a gas collection box, and the first outlet of the gas collection box is connected to a negative pressure pump. The cleaning device includes an evaporator and an evaporation cleaning agent pipeline. The inlet of the evaporator is connected to the second outlet of the gas collection box, the inlet end of the evaporation cleaning agent pipeline is connected to the outlet of the evaporator, and the outlet end of the evaporation cleaning agent pipeline is connected to the inlet end of the flue gas duct.

[0008] Furthermore, the gas collecting box is provided with a gas collecting chamber, and a cooling mechanism is provided around the gas collecting chamber. The inlet, first outlet and second outlet of the gas collecting box are all connected to the gas collecting chamber, and a filter screen is provided below the gas collecting chamber.

[0009] Furthermore, the cleaning device also includes a circulation pump, the inlet of which is connected to the second outlet of the gas collection box, and the outlet of which is connected to the inlet of the evaporator, and the evaporator is provided with a liquid replenishment port.

[0010] Furthermore, the generating device includes a generating box, the inlet end of a flue gas duct is connected to the upper outlet of the generating box, a flue gas valve is provided on the flue gas duct near the outer side of the upper wall of the generating box, the outlet end of the evaporating cleaning agent duct is near the flue gas valve, and an evaporating cleaning agent valve is provided at the outlet end of the evaporating cleaning agent duct.

[0011] Furthermore, the enrichment device includes a cold trap and an enrichment box. A viewing window is provided at the lower part of the cold trap, and the enrichment box is disposed inside the cold trap. The upper inlet of the enrichment box is connected to the outlet end of the flue gas duct, and the upper outlet of the enrichment box is connected to the inlet of the gas collection box.

[0012] Furthermore, the lower outlet of the enrichment box is connected to a liquid collection tank, which is located outside the cold trap. The pipe connecting the lower outlet of the enrichment box and the liquid collection tank is equipped with a drain valve outside the cold trap. The other inlet of the upper part of the enrichment box is connected to a liquid storage tank, which is located outside the cold trap. The pipe connecting the other inlet of the upper part of the enrichment box and the liquid storage tank is equipped with an inlet valve and an inlet pump outside the cold trap.

[0013] Furthermore, the generating device also includes a heating plate and a stirrer. The heating plate is located at the bottom of the generating chamber, and a dish containing the asphalt sample is placed on the heating plate. The motor of the stirrer is installed on the outside of the generating chamber, and the stirring rod of the stirrer extends into the chamber. The generating chamber is equipped with a door.

[0014] Furthermore, the blower is connected to the upper inlet of the generating box, and an adjustable air supply valve is installed on the connecting pipe between the blower and the generating box.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model provides an asphalt fume generation and enrichment device. By setting up a cleaning device, the device can be cleaned in a closed environment after each experiment without disassembling the experimental device, which improves experimental efficiency and avoids damage to the airtightness of the device caused by frequent disassembly and cleaning.

[0017] 2. This utility model provides an asphalt fume generation and enrichment device. The enrichment device is connected to a collection tank and a storage tank. The adsorbent in the enrichment device is replaced by opening and closing the drain valve and the inlet valve. The generation device is equipped with a door. The asphalt sample in the generation device is replaced by opening and closing the door. The generation device and the enrichment device do not need to be removed from the device during the experiment. The operation is simple and convenient. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1This is a schematic diagram of the internal structure of an asphalt fume generation and enrichment device according to the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 for Figure 1 Enlarged view at point B in the middle;

[0022] Figure 4 This is a schematic diagram of the external structure of an asphalt fume generation and enrichment device according to the present invention.

[0023] In the diagram: 1. Generating device; 11. Generating box; 111. Box door; 12. Heating plate; 13. Dish; 14. Flue gas duct; 15. Flue gas valve; 16. Stirrer; 2. Enrichment device; 21. Cold trap; 211. Viewing window; 22. Enrichment box; 23. Liquid collection tank; 231. Drain valve; 24. Storage tank; 241. Inlet valve; 242. Inlet pump; 25. Support; 3. Cleaning device; 31. Evaporator; 32. Evaporation cleaning agent duct; 33. Evaporation cleaning agent valve; 34. Circulation pump; 35. Liquid replenishment port; 4. Blower; 41. Blower valve; 5. Gas collection box; 51. Filter screen; 52. Cooling mechanism; 53. Gas collection chamber; 6. Negative pressure pump. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the following description of the utility model, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. The term "connection" only indicates the connection between devices and has no special meaning.

[0026] For specific embodiments, please refer to Figures 1-4An asphalt fume generation and enrichment device includes a generation device 1, an enrichment device 2, and a cleaning device 3. The upper inlet of the generation device 1 is connected to a blower 4, and the upper outlet of the generation device 1 is connected to a flue gas duct 14. The outlet end of the flue gas duct 14 is connected to the upper inlet of the enrichment device 2. The upper outlet of the enrichment device 2 is connected to a gas collection box 5. The first outlet of the gas collection box 5 is connected to a negative pressure pump 6. The inlet of the cleaning device 3 is connected to the second outlet of the gas collection box 5, and the outlet of the cleaning device 3 is connected to the inlet end of the flue gas duct 14.

[0027] Furthermore, the generating device 1 includes a generating chamber 11, a heating plate 12, and a stirrer 16. The generating chamber 11 is provided with a chamber door 111. When the chamber door 111 is closed, a sealed space is formed inside the generating chamber 11. The heating plate 12 is located at the bottom inside the generating chamber 11, and a dish 13 containing an asphalt sample is placed on the heating plate 12. The heating plate 12 is used to heat the asphalt sample. The motor of the stirrer 16 is installed on the outside and above the generating chamber 11, and the stirring rod of the stirrer 16 extends into the chamber of the generating chamber 11 to stir the asphalt sample. The experimenter can adjust the stirring speed by adjusting the motor frequency of the stirrer 16.

[0028] Furthermore, the blower 4 is connected to the upper inlet of the generating box 11 to supply dry air to the device. An air supply valve 41 is installed on the connecting pipe between the blower 4 and the generating box 11. The valve opening of the air supply valve 41 is adjustable. After the negative pressure pump 6 is started, the experimenter can adjust the air flow rate by adjusting the valve opening of the air supply valve 41.

[0029] Furthermore, the inlet end of the flue gas duct 14 is connected to the upper outlet of the generating box 11, and a flue gas valve 15 is provided in the flue gas duct 14 near the outer side of the upper wall of the generating box 11. The flue gas duct 14 is used to transport the asphalt fumes generated by the generating device 1 heating the asphalt sample.

[0030] Furthermore, the enrichment device 2 includes a cold trap 21 and an enrichment box 22. The enrichment box 22 is disposed inside the cold trap 21, which provides a low-temperature environment for the enrichment box 22. The upper inlet of the enrichment box 22 is connected to the outlet end of the flue gas duct 14, and the upper outlet of the enrichment box 22 is connected to the inlet of the gas collection box 5. The lower outlet of the enrichment box 22 is connected to a liquid collection tank 23, which is disposed outside the cold trap 21. A drain valve 231 is provided outside the cold trap 21 for the connecting pipe between the lower outlet of the enrichment box 22 and the liquid collection tank 23. Another upper inlet of the enrichment box 22 is connected to a liquid storage tank 24, which is disposed outside the cold trap 21. The connecting pipe between the other upper inlet of the enrichment box 22 and the liquid storage tank 24 is provided outside the cold trap 21. An external inlet valve 241 and an inlet pump 242 are provided. The storage tank 24 contains clean adsorbent, such as cyclohexane. When the inlet valve 241 is opened, the adsorbent is pumped into the enrichment box 22 by the inlet pump 242. It can adsorb the asphalt fumes flowing out of the flue gas pipe 14 and condensing. When the drain valve 231 is opened, the adsorbent after adsorbing the asphalt fumes can be discharged from the enrichment box 22 and enter the collection tank 23. The experimenter can open the collection tank 23, take out the asphalt fumes-containing solution in the collection tank 23, and perform asphalt fumes component determination. A support 25 is provided at the bottom of the cold trap 21, and a viewing window 211 is provided at the bottom of the cold trap 21 for the experimenter to observe the liquid level changes in the enrichment box 22 in order to perform the opening and closing operations of the drain valve 231 and the inlet valve 241.

[0031] Furthermore, the gas collecting box 5 is provided with a gas collecting chamber 53, and a cooling mechanism 52 is provided around the gas collecting chamber 53. The inlet, first outlet and second outlet of the gas collecting box 5 are all connected to the gas collecting chamber 53. A filter screen 51 is provided below the gas collecting chamber 53. The cooling mechanism 52 cools the gas collecting chamber 53, so that the gas flowing into the gas collecting chamber 53 condenses and liquefies. After the residual asphalt slag carried by the gas is filtered out by the filter screen 51, it flows out from the second outlet.

[0032] Furthermore, the cleaning device 3 includes an evaporator 31, an evaporating cleaning agent pipeline 32, and a circulating pump 34. The inlet end of the evaporating cleaning agent pipeline 32 is connected to the outlet end of the evaporator 31, and the outlet end of the evaporating cleaning agent pipeline 32 is connected to the inlet end of the flue gas pipeline 14 near the flue gas valve 15. An evaporating cleaning agent valve 33 is provided at the outlet end of the evaporating cleaning agent pipeline 32. The evaporator 31 can release the evaporating cleaning agent, which is a low-boiling-point organic solvent, such as ethanol, used to dissolve and remove residual asphalt sludge in the flue gas pipeline 14 and the enrichment box 22. The evaporating cleaning agent is distributed through the flue gas pipeline... The cleaning agent 14 and the enrichment box 22 enter the gas collection box 5 and condense and liquefy. The asphalt slag carried by the evaporating cleaning agent is filtered out by the filter screen 51. The filtered and deslag-removed evaporating cleaning agent flows out of the gas collection box 5. The inlet of the circulation pump 34 is connected to the second outlet of the gas collection box 5, and the outlet of the circulation pump 34 is connected to the inlet of the evaporator 31. The evaporating cleaning agent flowing out of the gas collection box 5 flows back into the evaporator 31 under the action of the circulation pump 34. After multiple cycles, the evaporating cleaning agent can be condensed in the enrichment box 22 and then flow into the liquid collection tank 23 and discharged. The evaporator 31 is provided with a liquid replenishment port 35 for replenishing the cleaning agent into the evaporator 31.

[0033] The process for enriching asphalt fumes for each asphalt sample in this embodiment is as follows: close the inlet valve 241, outlet valve 231, evaporation cleaning agent valve 33, and cooling mechanism 52; start the cold trap 21 to provide a low-temperature environment for the enrichment device 2; open the flue gas valve 15 and air supply valve 41, and the blower 4 delivers dry air to dry the entire experimental device; start the heating plate 12 to heat the asphalt sample; adjust the motor frequency of the stirrer 16 to adjust the stirring speed according to experimental requirements, and adjust the valve opening of the air supply valve 41 to adjust the air flow rate to facilitate the upward discharge of asphalt fumes; the asphalt fumes generated after heating the asphalt sample enter the enrichment device 2 through the flue gas pipe 14 under the action of the negative pressure pump 6 and are adsorbed by the adsorbent in the enrichment box 22.

[0034] In this embodiment, after the asphalt fumes enrichment of each asphalt sample is completed, a non-disassembly cleaning process is performed directly. The specific process is as follows: the cold trap 21 is closed to release the low-temperature environment of the enrichment device 2; the drain valve 231 is opened until all the solution containing asphalt fumes flows out of the enrichment box 22, and then the drain valve 231 is closed; the flue gas valve 15 is closed, the evaporating cleaning agent valve 33 is opened, the evaporator 31 is started, the evaporator 31 releases the evaporating cleaning agent, and the evaporating cleaning agent flows along the flue gas pipe 14 under the action of the negative pressure pump 6, dissolving and carrying away the residual asphalt fumes in the flue gas pipe 14 and the enrichment box 22, and then enters the gas collection box 5; the cooling mechanism 52 is opened, and after the evaporating cleaning agent is condensed and filtered in the gas collection box 5, it flows back to the evaporator 31 under the action of the circulation pump 34, completing the cleaning of the device in a closed environment. The cleaning process does not require disassembly of the experimental device, which improves the experimental efficiency and avoids the damage to the airtightness of the device caused by frequent disassembly and cleaning.

[0035] After the device is cleaned, open the inlet valve 241 and the inlet pump 242 until there is enough clean adsorbent in the enrichment box 22, then close them; open the box door 111, place the dish 13 for the next experiment on the heating plate 12, then close the box door 111 to prepare for the next asphalt sample experiment; during the successive experiments, there is no need to remove the generating device 1 and the enrichment device 2 from the experimental device to replace the sample and adsorbent and measure the smoke production of the asphalt, making the operation simple, convenient and quick.

[0036] 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 device for generating and enriching asphalt fumes, characterized in that, It includes a generating device, an enrichment device, and a cleaning device. The upper inlet of the generating device is connected to a blower, and the upper outlet of the generating device is connected to a flue gas duct. The outlet end of the flue gas duct is connected to the upper inlet of the enrichment device. The upper outlet of the enrichment device is connected to a gas collection box. The first outlet of the gas collection box is connected to a negative pressure pump. The cleaning device includes an evaporator and an evaporation cleaning agent pipeline. The inlet of the evaporator is connected to the second outlet of the gas collection box. The inlet end of the evaporation cleaning agent pipeline is connected to the outlet of the evaporator. The outlet end of the evaporation cleaning agent pipeline is connected to the inlet end of the flue gas duct. The gas collecting box is provided with a gas collecting chamber, and a cooling mechanism is provided around the gas collecting chamber. The inlet, first outlet and second outlet of the gas collecting box are all connected to the gas collecting chamber, and a filter screen is provided below the gas collecting chamber.

2. The asphalt fume generation and enrichment device according to claim 1, characterized in that, The cleaning device also includes a circulation pump, the inlet of which is connected to the second outlet of the gas collection box, and the outlet of which is connected to the inlet of the evaporator. The evaporator is equipped with a liquid replenishment port.

3. The asphalt fume generation and enrichment device according to claim 1, characterized in that, The generating device includes a generating box, the inlet end of a flue gas duct is connected to the upper outlet of the generating box, a flue gas valve is installed on the flue gas duct near the outer side of the upper wall of the generating box, the outlet end of the evaporating cleaning agent duct is near the flue gas valve, and an evaporating cleaning agent valve is installed at the outlet end of the evaporating cleaning agent duct.

4. The asphalt fume generation and enrichment device according to claim 3, characterized in that, The enrichment device includes a cold trap and an enrichment box. A viewing window is provided at the bottom of the cold trap. The enrichment box is placed inside the cold trap. The upper inlet of the enrichment box is connected to the outlet end of the flue gas duct, and the upper outlet of the enrichment box is connected to the inlet of the gas collection box.

5. The asphalt fume generation and enrichment device according to claim 4, characterized in that, The lower outlet of the enrichment box is connected to a liquid collection tank, which is located outside the cold trap. The pipe connecting the lower outlet of the enrichment box and the liquid collection tank is equipped with a drain valve outside the cold trap. The other inlet of the upper part of the enrichment box is connected to a liquid storage tank, which is located outside the cold trap. The pipe connecting the other inlet of the upper part of the enrichment box and the liquid storage tank is equipped with an inlet valve and an inlet pump outside the cold trap.

6. The asphalt fume generation and enrichment device according to claim 3, characterized in that, The generating device also includes a heating plate and a stirrer. The heating plate is located at the bottom of the generating chamber, and a dish containing the asphalt sample is placed on the heating plate. The motor of the stirrer is installed on the outside of the generating chamber, and the stirring rod of the stirrer extends into the chamber. The generating chamber is equipped with a door.

7. The asphalt fume generation and enrichment device according to claim 3, characterized in that, The blower is connected to the upper inlet of the generating box, and an adjustable air supply valve is installed on the connecting pipe between the blower and the generating box.

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