Asphalt flue gas purification device

Abstract

The utility model discloses an asphalt flue gas purification device which is characterized by comprising an asphalt flue gas generation device, a roasting furnace, a spray cooling tower, a dry purification system and a booster fan, one end of the booster fan is connected with the asphalt flue gas generation device, the other end of the booster fan is connected with one end of the roasting furnace, and the other end of the roasting furnace is connected with the spray cooling tower. One end of the spray cooling tower is connected with the other end of the roasting furnace, the other end of the spray cooling tower is connected with the dry purification system, and asphalt flue gas is blown into the roasting furnace through the booster fan and sequentially passes through the flue gas combustion frame in the first cooling furnace to be directly incinerated; and after being cooled by the spray cooling tower, the incinerated flue gas enters the dry purification system to be further treated and then is discharged. The asphalt flue gas purification device disclosed by the utility model can completely absorb VOC (Volatile Organic Compounds) in asphalt flue gas, so that the pollution to the surrounding environment is prevented, and meanwhile, the body health of workers is ensured.

Description

Technical Field

[0001] The utility model relates to the field of asphalt purification, in particular to an asphalt fume purification device. Background Art

[0002] Asphalt is one of the main raw materials for carbon products. When solid asphalt is converted into liquid asphalt through an asphalt melting device, asphalt fume will be generated. Asphalt fume contains VOC components. If it is not treated and directly discharged, it will cause pollution to the surrounding environment.

[0003] The existing technical solutions are to use electric precipitation purification devices or black-method adsorption bag dust removal, but this method has many disadvantages in the operation process of treating VOC components in asphalt flue gas. VOC is a volatile organic compound that not only pollutes the surrounding environment, but also has a huge impact on human health. Utility Model Content

[0004] In view of the deficiencies of the existing technology, the utility model provides an asphalt fume purification device that can completely absorb the VOC components in the asphalt fume, preventing pollution to the surrounding environment while ensuring the health of employees.

[0005] The utility model is achieved through the following technical solutions:

[0006] An asphalt fume purification device, characterized by comprising an asphalt fume generating device, a roasting furnace, a spray cooling tower, a dry purification system, and a booster fan, wherein one end of the booster fan is connected to the asphalt fume generating device and the other end is connected to one end of the roasting furnace. One end of the spray cooling tower is connected to the other end of the roasting furnace and the other end is connected to the dry purification system. The roasting furnace includes a cooling zone, which includes a first cooling furnace and a second cooling furnace. The first cooling furnace is provided with a flue gas combustion rack. The asphalt fume generated by the asphalt fume generating device is blown into the roasting furnace via the booster fan and is directly incinerated at the flue gas combustion rack in the first cooling furnace and then secondary incinerated in the second cooling furnace. The incinerated flue gas is cooled by the spray cooling tower, enters the dry purification system for further treatment, and is then discharged. Furthermore, the asphalt fume generating device includes an asphalt fume storage tank, which is provided with an exhaust port, which is connected to one end of the booster fan.

[0007] Furthermore, the cooling zone also includes at least one cooling furnace connected to the second cooling furnace.

[0008] Furthermore, the roasting furnace also includes a combustion zone and a heat preservation zone.

[0009] Furthermore, the combustion zone includes at least one combustion furnace, and the insulation zone includes at least one insulation furnace.

[0010] Furthermore, at least one fire channel is provided in the roasting furnace, and the fire channel sequentially passes through the cooling zone, combustion zone and insulation zone. The asphalt fume is blown into the roasting furnace through the booster fan and directly burned in the fire channel located at the first cooling furnace.

[0011] Furthermore, a blower is provided at one end of the fire channel to blow air into the fire channel.

[0012] Furthermore, a smoke exhaust rack is provided in the heat preservation area, and the smoke exhaust rack is connected to one end of the spray cooling tower.

[0013] Furthermore, negative pressure sensors are provided in the flue gas combustion rack and the fire channel, and the negative pressure sensors are connected to the combustion control system. The combustion control system adjusts the air volume of the blower according to the signal of the negative pressure sensor to achieve the purpose of controlling the negative pressure value in the roasting furnace.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. By connecting the asphalt fume generating device with the first cooling furnace chamber of the cooling zone of the roaster, the asphalt fume is collected from the asphalt fume source by the asphalt fume collecting device and then fed into the first cooling furnace chamber of the roaster for direct incineration. This can not only completely absorb the VOC components in the asphalt fume, but also provide a heat source for the cooling zone of the roaster, prevent pollution to the surrounding environment, and ensure the health of employees.

[0016] 2. The negative pressure value in the furnace is fed back by multiple negative pressure sensors arranged at the flue gas combustion rack and the fire channel, and the negative pressure parameters of the combustion system are controlled in real time to ensure that the roasted carbon blocks in the furnace burn according to the combustion curve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an embodiment of the asphalt fume purification device of the utility model;

[0018] Figure 2 This is the principle diagram of negative pressure control in the furnace of the asphalt flue gas purification device of this utility model.

[0019] 1. Asphalt fume generating device; 11. Asphalt fume storage tank; 12. Exhaust port; 2. Roasting furnace; 21. Cooling zone; 210. Cooling furnace; 211. Flue gas combustion rack; 212. Blower; 213. Fire channel; 22. Combustion zone; 220. Combustion furnace; 221. Smoke exhaust rack; 23. Insulation zone; 230. Insulation furnace; 24. Negative pressure sensor; 25. Combustion control system; 3. Spray cooling tower; 4. Dry purification system; 5. Booster fan; 6. Flue gas duct; 10P, first cooling furnace; 9P, second cooling furnace; 8P, third cooling furnace; 7P, fourth cooling furnace; 6P, first combustion furnace; 5P, second combustion furnace; 4P, third combustion furnace; 3P, first insulation furnace; 2P, second insulation furnace; 1P, third insulation furnace. DETAILED DESCRIPTION

[0020] The following is a further non-restrictive detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model.

[0021] like Figure 1 As shown, a preferred embodiment of the asphalt fume purification device of the utility model includes an asphalt fume generating device 1, a roasting furnace 2, a spray cooling tower 3, a dry purification system 4 and a booster fan 5, one end of the booster fan 5 is connected to the asphalt fume generating device 1, and the other end is connected to one end of the roasting furnace 2, one end of the spray cooling tower 3 is connected to the other end of the roasting furnace 2, and the other end is connected to the dry purification system 4.

[0022] The asphalt fume generating device 1 includes an asphalt fume storage tank 11, which is provided with an exhaust port 12, and the exhaust port 12 is connected to one end of the booster fan 5. The asphalt fume storage tank 11 can also be a solid asphalt melting tank or an asphalt melting storage tank in a molding workshop.

[0023] The roasting furnace 2 includes a cooling zone 21, a combustion zone 22, and a holding zone 23, which are connected in sequence. The cooling zone 21 includes a first cooling furnace 10P and a second cooling furnace 9P, as well as at least one cooling furnace 210 connected to the second cooling furnace 9P; the combustion zone 22 includes at least one combustion furnace 220; and the holding zone includes at least one holding furnace 230.

[0024] Furthermore, the roasting furnace 2 is provided with at least one fire channel 213, which sequentially passes through the cooling zone 21, the combustion zone 22, and the holding zone 23. Asphalt fume is blown into the roasting furnace 2 by the booster fan 5 and directly burns in the fire channel 213 located at the first cooling furnace 10P. Furthermore, a blower 212 is provided at one end of the fire channel 213 for blowing air into the fire channel 213.

[0025] In this embodiment, the cooling zone 21 includes a first cooling furnace 10P, a second cooling furnace 9P, a third cooling furnace 8P and a fourth cooling furnace 7P connected in sequence; the combustion zone 22 includes a first combustion furnace 6P, a second combustion furnace 5P and a third combustion furnace 4P connected in sequence; the insulation zone 23 includes a first insulation furnace 3P, a second insulation furnace 2P and a third insulation furnace 1P connected in sequence.

[0026] Furthermore, the first cooling furnace 10P is provided with a flue gas combustion rack 211 connected to one end of the booster fan 5 , and the third holding furnace 1P is provided with a smoke exhaust rack 221 connected to one end of the spray cooling tower 3 .

[0027] Specifically, in this embodiment, nine fire channels are provided in the roasting furnace 2. At the same time, a negative pressure sensor 24 is provided in the smoke combustion rack 211 and each fire channel 213 and is connected to the combustion control system 25 of the roasting furnace 2. The combustion control system 25 is connected to the blower 212.

[0028] When the present new practical asphalt fume purification device is in use, after the asphalt fume is generated from the asphalt fume generating device 1, it is blown into the flue gas combustion rack 211 in the first cooling furnace 10P along the direction of the arrow shown in the flue gas duct 6 after being pressurized by the booster fan 5. Since the roasting furnace 2 in the roasting workshop requires natural gas as energy during the heat treatment process of the carbon blocks, the temperature of the first cooling furnace 10P of the roasting furnace 2 can reach about 1100°C. The VOC components in the asphalt fume will be directly incinerated here, and some of the high-pressure flue gas that is not incinerated will enter 9P for secondary incineration along the air flow. The final products are pollution-free H20 and CO2, which can not only remove the VOC components and other organic tail gases generated by the melting of asphalt, purify the air and prevent environmental pollution, but also provide a heat source for the cooling zone 21 of the roasting furnace 2. Even if there is residual asphalt fume that has not been purified, it will eventually be discharged through the smoke exhaust rack 221 of the third holding furnace 1P along with the smoke after combustion, cooled by the spray cooling tower 3, and finally further purified by the dry purification system 4, thereby preventing pollution to the surrounding environment and ensuring the health of employees.

[0029] like Figure 2 As shown, during operation of the novel practical asphalt fume purification device, negative pressure sensors 24 are installed in the fume combustion rack 211 and each fire channel 213 within the roasting furnace 2. The negative pressure sensors 24 monitor the negative pressure value within the roasting furnace 2 in real time and transmit the signal to the combustion control system 25. The combustion control system 25 dynamically adjusts the air volume of the blower 212 based on the signal from the negative pressure sensor 24, thereby achieving real-time control of the negative pressure value within the roasting furnace 2.

[0030] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An asphalt fume purification device, characterized in that: The invention comprises an asphalt fume generating device (1), a roasting furnace (2), a spray cooling tower (3), a dry purification system (4) and a booster fan (5), wherein one end of the booster fan (5) is connected to the asphalt fume generating device (1), and the other end is connected to one end of the roasting furnace (2); one end of the spray cooling tower (3) is connected to the other end of the roasting furnace (2), and the other end is connected to the dry purification system (4); the roasting furnace (2) comprises a cooling zone (21), and the cooling zone (21) comprises a first cooling furnace (1 0P) and a second cooling furnace (9P), wherein a smoke combustion rack (211) is provided in the first cooling furnace (10P), and the asphalt smoke generated by the asphalt smoke generating device (1) is blown into the roasting furnace (2) through the booster fan (5), and is directly incinerated at the smoke combustion rack (211) in the first cooling furnace (10P) and secondarily incinerated in the second cooling furnace (9P) in sequence, and the smoke after incineration is cooled by the spray cooling tower (3) and then enters the dry purification system (4) for further treatment and then discharged; The roasting furnace (2) further comprises a combustion zone (22) and a heat preservation zone (23); At least one fire channel (213) is provided in the roasting furnace (2), and the fire channel (213) sequentially passes through the cooling zone (21), the combustion zone (22), and the heat preservation zone (23). The asphalt fume is blown into the roasting furnace (2) through the booster fan (5) and directly burned in the fire channel (213) located at the first cooling furnace (10P); A blower (212) is provided at one end of the fire channel (213) for blowing air into the fire channel (213); A negative pressure sensor (24) is also provided in the flue gas combustion rack (211) and the fire channel (213). The negative pressure sensor (24) is connected to a combustion control system (25). The combustion control system (25) adjusts the air volume of the blower (212) according to the signal of the negative pressure sensor (24), thereby achieving the purpose of controlling the negative pressure value in the roasting furnace (2).

2. The asphalt fume purification device according to claim 1, characterized in that: The asphalt fume generating device (1) comprises an asphalt fume storage tank (11), the asphalt fume storage tank (11) is provided with an exhaust port (12), and the exhaust port (12) is connected to one end of the booster fan (5).

3. The asphalt fume purification device according to claim 1, characterized in that: The cooling zone (21) further comprises at least one cooling furnace (210) connected to the second cooling furnace (9P).

4. The asphalt fume purification device according to claim 1, characterized in that: The combustion zone (22) includes at least one combustion furnace (220), and the heat preservation zone (23) includes at least one heat preservation furnace (230).

5. The asphalt fume purification device according to claim 1, characterized in that: A smoke exhaust rack (221) is provided in the heat preservation zone (23), and the smoke exhaust rack (221) is connected to one end of the spray cooling tower (3).

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